阅读说明：本技术 烹饪设备 (Cooking apparatus ) 是由 金学秀 郭东星 尹动赫 尹星文 于 2020-01-10 设计创作，主要内容包括：本发明公开一种烹饪设备。所述烹饪设备的壳体的顶面和正面开放,门设置成能够开闭壳体的顶面和正面。这种构成的烹饪设备能够提供一种允许用户能够容易且便利地将食物或托盘插入烹饪室或者从烹饪室中取出所需的扩展的通道。(The invention discloses a cooking device. The top surface and the front surface of the housing of the cooking apparatus are opened, and the door is provided to be able to open and close the top surface and the front surface of the housing. The cooking apparatus of this configuration can provide an extended passage that allows a user to easily and conveniently insert or remove food or a tray into or from the cooking chamber as needed.)

1. A cooking apparatus, characterized by comprising:

a housing which forms a cooking chamber surrounded by a bottom surface, a first side surface, a second side surface and a back surface; and

a door for opening and closing the cooking chamber,

the first side and the second side are disposed opposite to each other,

at least a part of a top surface of the case opposite to the bottom surface is formed with a first open portion,

at least a part of a front surface of the housing opposite to the rear surface is formed with a second open portion,

the top surface and the front surface are opened in such a manner that the first open portion and the second open portion are connected to each other,

the door includes:

a door top surface portion covering the first opening portion;

a door front portion connected to a front side of the door top portion and covering the second opening portion,

the door rotates around a rear side of the door top surface portion to open and close the first opening portion and the second opening portion.

2. The cooking apparatus of claim 1,

one sheet of material is bent to form at least three of the bottom surface, the first side surface, the second side surface, and the back surface.

3. The cooking apparatus of claim 2,

side cover portions protruding in a direction in which the first side surface and the second side surface are away from each other are formed at an end portion of the first side surface and an end portion of the second side surface adjacent to the front surface, respectively.

4. Cooking apparatus according to claim 3,

the door assembly further includes a pair of hinge assemblies respectively disposed at both side portions of the housing, coupled to a rear side of the door top surface portion, and rotatably supporting the door.

5. Cooking apparatus according to claim 4,

either one of a pair of the hinge assemblies is coupled to the first side,

the other of the pair of hinge assemblies is coupled to the second side.

6. Cooking apparatus according to any of claims 2 to 5,

a bottom surface cover portion protruding in a direction away from the top surface is provided at least one of an end portion of the bottom surface adjacent to the front surface and an end portion of the bottom surface adjacent to the back surface.

7. Cooking apparatus according to claim 6,

further comprises a heating part which is arranged at the lower part of the bottom surface,

the bottom cover part comprises a first bottom cover part and a second bottom cover part,

the first bottom surface cover portion is provided at an end portion of the bottom surface adjacent to the front surface, the second bottom surface cover portion is provided at an end portion of the bottom surface adjacent to the back surface,

the front of the heating part is shielded by the first bottom cover part, and the rear of the heating part is shielded by the second bottom cover part.

8. The cooking apparatus according to any one of claims 2 to 7,

the rear plate is disposed at the rear side of the bottom surface, the first side surface and the second side surface, and is combined with at least one of the bottom surface, the first side surface and the second side surface to form the back surface of the housing.

9. The cooking apparatus of claim 8, further comprising:

a heating unit disposed below the bottom surface;

a control substrate disposed behind the rear surface and configured to control an operation of the heating unit; and

a rear case disposed behind the rear surface and accommodating the control board therein,

the space in which the heating unit is disposed communicates with the space in which the control substrate is disposed.

10. The cooking apparatus according to any one of claims 2 to 9,

the plate is formed in a quadrangular shape, and the metal plate is orthogonal to the center of the quadrangular metal plate with long sides and short sides in the long side directionThe shape of the glass is that of the glass,

the plate is provided with a first bending line and a second bending line, the first bending line is formed by a straight line parallel to the short side of the metal plate, the second bending line is formed by a straight line parallel to the long side of the metal plate,

the two first bending lines are arranged at a distance from each other in the longitudinal direction of the plate material,

the second bend line is disposed between the two first bend lines,

the plate is bent in a '+' shape with the first bending line as a center, such that the bottom surface is formed at the center of the plate in the long side direction, the first side surface and the second side surface are formed at the surface bent with the bottom surface as a center,

the plate is bent by taking the second bending line as the centerThe plate material is shaped such that the bottom surface is formed at the center in the longitudinal direction of the plate material, and the back surface is formed at a surface bent with the bottom surface as the center.

Technical Field

The present invention relates to a cooking apparatus.

Background

A cooking apparatus is an apparatus that is provided in a kitchen space as one of home appliances for cooking food and cooks the food according to a user's intention. Such cooking apparatuses may be classified into various types according to the type of heat source or form used and the type of fuel.

If the cooking apparatuses are classified according to the forms of cooking foods, the cooking apparatuses may be classified into open type and closed type cooking apparatuses according to the space where the foods are placed. Examples of the closed cooking apparatus include an oven, an induction microwave oven, and the like, and examples of the open cooking apparatus include a cooktop, and the like.

The closed cooking apparatus is a cooking apparatus that shields a space where food is located and heats the shielded space to cook the food. In the closed cooking apparatus, a cooking chamber is provided, which is a space that is shielded when food is placed and cooked. Such a cooking chamber actually forms a space for cooking food.

The closed cooking apparatus may be classified into a gas oven and an electric oven according to the type of heat source. Unlike a gas oven, in which a plurality of heaters are operated using electricity as a heat source and food is cooked using heat emitted from the heaters, a gas oven uses gas as fuel and supplies gas to a burner to ignite the gas, thereby generating flames by burning the supplied gas and cooking the food using the generated flames.

Among them, the use rate is tending to increase because electric ovens have faster cooking speeds, higher thermal efficiencies, and better stability than gas ovens. Further, an electric oven is more easily miniaturized than a gas oven, and therefore, a mini-oven type electric oven (hereinafter, referred to as a "mini-oven") having a small size is also released on the market.

The mini oven is not suitable for cooking large food due to its small size, but is suitable for baking or heating a small amount of food when a burden is large for using a large capacity oven.

In particular, the mini-oven is advantageous in that it can be conveniently used for toasting toast, and also for cooking small-sized foods other than toast, and thus the trend of using cooking devices instead of the existing toaster is gradually increasing.

Generally, a mini oven includes a housing for accommodating all components, a plurality of shelves for placing food while cooking, and a cooking chamber having an open front and capable of cooking by placing food therein.

In addition, the mini oven includes an oven heater for heating food to an appropriate temperature and a door for opening and closing the cooking chamber.

The oven heater may be disposed at a lower portion of the shelf or at an upper portion of the cooking chamber. The oven heater disposed at the lower portion of the shelf is mainly used to heat the shelf, and the oven heater disposed at the upper portion of the cooking chamber may be used to directly heat food placed on the shelf.

The door is provided to partition the inside of the cooking chamber from the outside to form a closed space when food is placed in the cooking chamber and cooked. The door may further include a handle capable of easily opening and closing the door and a glass window for enabling observation of the inside of the cooking chamber without opening the door.

In the mini-oven, the door is mostly provided to be opened at a lower portion. That is, in the door applied to the mini oven, a lower end portion is rotatably coupled to a housing through a door hinge, and a cooking chamber is opened by rotating the door downward with a lower end portion of the door rotatably coupled to the housing as a center, and is closed by rotating the door upward in a state where the cooking chamber is opened.

The door opens the cooking chamber by rotating an angle of about 90 degrees in a state where the cooking chamber is closed, and insertion and extraction of the shelf can be performed in such a state where the cooking chamber is opened by the door.

That is, the door is opened in a state of being substantially parallel to the shelf inserted into the inside of the mini oven, and the insertion and extraction of the shelf is directly performed by the user.

However, the mini oven of the above structure has the following disadvantages.

First, when the door is opened, the door protrudes to the front of the mini oven only by the height of the door, and thus, when the mini oven is installed in a narrow space, it is difficult to accurately perform the opening operation of the door and the insertion and removal operation of the shelf.

Second, when the door is opened, a problem occurs in that the center of gravity of the mini oven is tilted forward as the door protrudes forward of the mini oven by the height of the door.

As a mini oven that is small or light in weight, due to its characteristics, when the door is opened forward, the center of gravity of the mini oven may be tilted forward, and in this case, the possibility of the mini oven tipping forward may be increased.

In particular, when taking out the shelf, in order to check the cooking state or to temporarily place the shelf, it is often the case that the shelf is placed on the upper portion of the door, and therefore, as described above, in the structure in which the center of gravity of the mini oven is inclined forward, the risk of the mini oven falling over will inevitably increase.

Furthermore, this risk is greater when the weight of the shelf or the food placed on the shelf is heavy. Thus, not only is such a risk increased when cooking heavier foods, but there is also a burden that requires an increase in the weight of the shelf. That is, even if it is necessary to use a thick and heavy shelf for improving cooking performance, it is difficult to use such a shelf due to the risk of the mini-oven falling over.

Third, a passage for inserting and taking out the shelf and a passage for confirming the cooking state are limited to the front of the mini oven, and thus various limitations occur.

That is, the direction of inserting and taking out the shelf is limited only to the front and rear direction, so that it is inconvenient to insert and take out the shelf when the mini oven is installed at a lower position. In addition, the passage for confirming the cooking state is limited to only the glass window provided on the door, and thus it is very inconvenient for confirming the cooking state when the mini oven is provided at a lower position.

In general, in order to accurately confirm the cooking state of the entire food, it is not enough to open the door, and the tray must be removed.

In other words, when the user wants to accurately confirm the cooking state of the whole food, the user must directly take out the shelf after directly opening the door and then insert the shelf, but when the mini-oven is installed at a lower position, the above operation is very inconvenient, and the possibility of the user being injured (such as scalding, etc.) during the process that the user directly takes out and inserts the shelf increases.

In view of the above, a structure capable of opening the doors at the front and upper portions of the cooking chamber at the same time may be considered. Such a door can be provided in such a manner that a front surface portion disposed in front of the cooking chamber and a top surface portion disposed in an upper portion of the cooking chamber are integrally provided.

The door having such a structure can open the cooking chamber by rotating around the rear side thereof, and not only the front side of the cooking chamber but also the upper portion of the cooking chamber can be opened by the rotation of the door.

Therefore, the direction of inserting and taking out the shelf may be extended to the upper portion in addition to the front and rear direction, and since the door does not protrude to the front of the mini-toaster when the door is opened, the possibility that the center of gravity of the mini-toaster is inclined to the front is reduced. In addition, since the tunnel confirming the cooking state when the door is opened is extended to the upper portion of the cooking chamber in addition to the front of the cooking chamber, the cooking state can be confirmed more easily.

However, in the door-to-mini oven adopting the structure as described above, the front and top surfaces of the case forming the cooking chamber should be opened.

That is, the housing employed in the mini-oven of the structure should be provided in a form that the top surface is opened in addition to the front surface. In the case of this type, since the side surfaces of the case are bonded only to the bottom surface and the back surface of the case, it is difficult to appropriately secure the structural rigidity of the side surfaces of the case.

Therefore, in the process of opening and closing the door, there is a high possibility that the side surface of the housing is deformed or is deformed by an external force.

In addition, gaps may be generated at the coupling portions between the surfaces constituting the case, i.e., the bottom surface, the two side surfaces, and the back surface, and the gaps may cause a reduction in the aesthetic appearance of the inside of the cooking chamber. In addition, there may also arise a problem that foreign matter such as food residue or the like is caught in the gap or the foreign matter falls through the gap.

Disclosure of Invention

An object of the present invention is to provide a cooking apparatus having a housing with an improved structure, which is suitable for a cooking apparatus having doors that open both the front and upper portions of a cooking chamber.

Another object of the present invention is to provide a cooking apparatus of an improved structure capable of reducing a gap inside a housing.

In addition, another object of the present invention is to provide an improved cooking apparatus including a housing of an improved structure such that a gap of a front surface of the housing is not exposed when a door is opened.

In a cooking apparatus of an embodiment of the present invention for achieving the above object, the cooking apparatus is configured to open a top surface and a front surface of a casing, and a door may open and close the top surface and the front surface of the casing.

The cooking apparatus of this configuration provides an extended passage that allows a user to easily and conveniently insert or remove food or a tray into or from the cooking chamber as needed.

Another aspect of the present invention is characterized in that one plate material is bent to form three or more surfaces of the case.

Thereby, the manufacturing of the housing can be performed in a form in which the bottom surface and the two side surfaces are integrally connected without a seam. Therefore, when an external force is applied to both side surfaces of the housing, the influence of the external force is distributed to the entire connection portion between the respective surfaces and also the gap inside the housing can be reduced.

In addition, another aspect of the present invention is characterized in that the hinge assembly is coupled to each side of the housing.

In addition, another aspect of the present invention is characterized in that the rear case is coupled to the rear surface of the case.

In addition, the rear case can be coupled to and supported by the base.

Accordingly, a support structure is provided in which both side surfaces of the housing are supported by the hinge assembly, the rear surface of the housing is supported by the rear case, and the rear case is supported by the base, so that the structural rigidity of the housing can be improved.

In addition, another aspect of the present invention is characterized in that the side cover portions are formed at respective side surfaces of the housing.

In addition, each side cover portion can be seamlessly connected with the respective side of the housing.

In addition, the side cover part is arranged to cover the front of the hinge assembly.

In addition, the side cover part can be combined with the hinge assembly in the front-rear direction.

According to this configuration, the portion exposed forward when the door is opened is covered with the side cover portions integrally connected to both side surfaces of the casing without a seam, so that the aesthetic appearance of the front surface of the cooking device can be improved.

In addition, the coupling strength between the housing and the hinge assembly may be increased, and the resistance to lateral deformation of the housing may also be improved.

A cooking apparatus according to an aspect of the present invention includes: a housing which forms a cooking chamber surrounded by a bottom surface, a first side surface, a second side surface and a back surface; and a door opening and closing the cooking chamber, the first side surface and the second side surface being disposed to face each other, a first opening portion being formed in at least a part of a top surface facing the bottom surface, a second opening portion being formed in at least a part of a front surface facing the back surface, the top surface and the front surface being opened such that the first opening portion and the second opening portion are connected to each other, the door including: a door top surface portion covering the first opening portion; and a door front portion that is connected to a front side of the door top portion, covers the second opening portion, and is rotatable about a rear side of the door top portion to open and close the first opening portion and the second opening portion.

In addition, one plate material is bent to form at least three faces of the bottom face, the first side face, the second side face, and the back face.

In addition, side cover portions are provided at end portions of the first side surface and the second side surface adjacent to the front surface, respectively, the side cover portions being formed to protrude in directions away from the first side surface and the second side surface, respectively.

Further, it is preferable that the bottom surface and the first side surface, the bottom surface and the second side surface, and the first side surface or the second side surface and the side cover portion are integrally connected without a seam.

In addition, the present invention preferably further includes a pair of hinge assemblies respectively disposed at both side portions of the housing, coupled to a rear side of the door top surface portion, and rotatably supporting the door.

Further, it is preferable that either one of the pair of hinge assemblies is combined with the first side surface, and the other one of the pair of hinge assemblies is combined with the second side surface.

Further, it is preferable that the hinge assembly coupled to the first side is disposed in a space surrounded by the first side and the side cover part and contacts the first side and the side cover part, is coupled to the first side and the side cover part, and the hinge assembly coupled to the second side is disposed in a space surrounded by the second side and the side cover part and contacts the second side and the side cover part and is coupled to the second side and the side cover part.

Further, it is preferable that the plate material is formed of a metal plate having a quadrilateral shape with a long side and a short side, two bending lines are arranged spaced apart from each other along a long side direction of the plate material, each of the bending lines is formed of a straight line parallel to the short side of the plate material, the plate material is bent into a "+" -shape with the bending lines being neutral, the bottom surface is formed of a surface arranged at a center in the long side direction of the plate material, and the first side surface and the second side surface are formed of a surface bent with the bottom surface being a center.

Further, it is preferable that at least one of an end portion of the bottom surface adjacent to the front surface and an end portion of the bottom surface adjacent to the back surface is provided with a bottom surface cover portion formed to protrude in a direction away from the top surface.

Preferably, the heating unit further includes a heating portion disposed at a lower portion of the bottom surface, the bottom surface cover portion is provided at both an end portion of the bottom surface adjacent to the front surface and an end portion of the bottom surface adjacent to the back surface, and both front and rear portions of the heating portion are shielded by the bottom surface cover portion.

In addition, the present invention preferably further includes a back plate disposed at a rear side of the bottom surface, the first side surface, and the second side surface, and coupled to at least one of the bottom surface, the first side surface, and the second side surface to form a back surface of the case.

Preferably, a bottom cover portion is provided at an end of the bottom surface adjacent to the back surface, the bottom cover portion being formed to protrude in a direction away from the top surface, and the back plate is coupled to the bottom cover portion.

In addition, the present invention further comprises: a heating unit disposed below the bottom surface; a control substrate disposed behind the rear surface and controlling an operation of the heating part; and a rear case disposed behind the rear surface to accommodate the control board therein, and preferably, a space in which the heating portion is disposed is connected to a space in which the control board is disposed.

Further, it is preferable that the metal plate formed in a quadrangular shape as the plate material is orthogonal to the center in the longitudinal direction of the quadrangular metal plate having long sides and short sidesA shape in which a first bending line and a second bending line are provided in the plate material, the first bending line being formed by a straight line parallel to the short side of the metal plate, the second bending line being formed by a straight line parallel to the long side of the metal plate, two of the first bending lines being disposed apart from each other along the long side direction of the plate material, the second bending line being disposed between the two first bending lines, the plate material being formed by the first bending linesBend into "+" shape for the center for the broken line, make the long limit direction's of panel center forms the bottom surface, with the bottom surface forms for the face shape of center bending first side with the second side, the panel with the second is bent into for the center to the line is bent toThe plate material is shaped such that the bottom surface is formed at the center in the longitudinal direction of the plate material, and the back surface is formed at a surface bent with the bottom surface as the center.

The cooking apparatus of the present invention includes: a housing having a shape with a front surface and a top surface opened; and a door provided to open and close the front and top surfaces of the case, so that it is possible to provide an expanded passage allowing a user to easily and conveniently insert or remove food or trays into or from the cooking chamber.

In addition, according to the present invention, the manufacture of the case may be performed in a form in which the bottom surface is integrally connected with both side surfaces without a seam, and therefore, when an external force is applied to both side surfaces of the case, the influence of the external force is not divided into the entire connection portion between the respective surfaces, so that it is possible to provide the case with better structural rigidity and resistance to lateral deformation.

In addition, according to the present invention, there is provided a support structure in which both side surfaces of a housing are supported by a hinge assembly, a rear surface of the housing is supported by a rear case, and the rear case is supported by a base, so that structural rigidity of the housing can be more effectively improved.

In addition, according to the present invention, the housing is provided in a form in which the bottom surface and the two side surfaces are integrally connected without a seam, so that not only is the aesthetic appearance of the inside of the cooking chamber improved, but also an effect is obtained in which foreign substances are prevented from being caught in a gap between the bottom surface and the two side surfaces of the housing or being contaminated by the foreign substances falling through the gap to the second heating part.

In addition, according to the present invention, a portion exposed forward when the door is opened is covered by the side cover part and the bottom cover part, which are integrally connected with both side surfaces and the bottom surface of the case without a seam, so that an effect of improving the aesthetic property of the front surface of the cooking apparatus can be obtained.

In addition, the present invention provides an extended passage so that a user can easily and conveniently insert or remove food or a tray into or from a cooking chamber, while also providing a function of automatically removing or inserting the tray when the door is opened or closed, thereby more easily and conveniently removing and inserting the food or the tray.

In addition, the present invention is configured to rotate the door upward to open the front and top surfaces of the cooking chamber without unfolding the door forward, and thus, the door can be easily and smoothly opened even in a narrow space, and food or trays can be more easily and conveniently taken out.

In addition, the present invention can open the front and top surfaces of the door through the door, thereby exposing more trays due to the opening of the door, so that the cooking food can be easily put in or taken out even though only a portion of the tray is pulled out, thereby improving convenience and safety.

In addition, according to the present invention, it is provided to open and close the door by rotating upward without unfolding the door forward, so that even when the door is opened, there is less possibility that the center of gravity of the cooking appliance is biased forward, thereby having an effect of greatly reducing the risk of the cooking appliance tipping over.

In addition, according to the present invention, the center of rotation of the door is formed at the rear side of the cooking appliance, the center of gravity of the door is formed to be more biased to the door top surface portion than the door front surface portion, and the center of gravity of the cooking appliance is formed to be biased to the rear side of the cooking appliance when the door is opened, and therefore, the risk of the cooking appliance falling over is greatly reduced, and thus there is an advantage in that the safety and the convenience of use of the cooking appliance are improved.

In addition, the present invention provides a cooking apparatus having a stable structure, which greatly reduces the risk of falling over, thereby having an advantage that a tray increased in thickness and weight for improving cooking performance can be freely adopted, or a tray that can be used in an environment heated by an induction heating part can be freely adopted.

Drawings

Fig. 1 is a perspective view illustrating a cooking apparatus according to an embodiment of the present invention.

Fig. 2 is a perspective view illustrating a door-opened state of the cooking apparatus shown in fig. 1.

Fig. 3 is an exploded perspective view illustrating an exploded state of the cooking apparatus shown in fig. 1.

Fig. 4 is a perspective view illustrating the housing and the hinge assembly shown in fig. 1 separately.

Fig. 5 is a perspective view showing a door according to an embodiment of the present invention separated.

Fig. 6 is a bottom perspective view showing the bottom surface side of the door shown in fig. 5.

Fig. 7 is an exploded perspective view showing the door shown in fig. 6 in an exploded configuration.

Fig. 8 is a sectional view taken along line viii-viii of fig. 7.

Fig. 9 is a sectional view taken along line ix-ix of fig. 6.

Fig. 10 is a sectional view schematically showing the flow of air inside a door according to an embodiment of the present invention.

Fig. 11 is a perspective view illustrating a tray according to an embodiment of the present invention.

Fig. 12 is a sectional view schematically showing a coupling structure between the tray and the seating protrusion shown in fig. 11.

Fig. 13 is a sectional view schematically showing another example of the structure between the tray and the set projection shown in fig. 12.

Fig. 14 is a view showing a coupling process between the tray and the seating protrusion shown in fig. 13.

Fig. 15 is a sectional view schematically showing still another example of the coupling structure between the tray and the seating protrusion shown in fig. 12.

Fig. 16 is a view showing a coupling process between the tray and the seating protrusion shown in fig. 15.

Fig. 17 is a perspective view illustrating a door-closed state of a cooking apparatus according to an embodiment of the present invention.

FIG. 18 is a cross-sectional view taken along line "XVIII-XVIII" of FIG. 17.

FIG. 19 is a cross-sectional view taken along line "XIX-XIX" of FIG. 17.

Fig. 20 is a perspective view illustrating a door opened state of the cooking apparatus shown in fig. 17.

FIG. 21 is a cross-sectional view taken along line "XXI-XXI" of FIG. 20.

FIG. 22 is a cross-sectional view taken along line "XXII-XXII" of FIG. 20.

Fig. 23 is a diagram showing a state of change in the center of gravity of the cooking apparatus in the door-open state.

Fig. 24 is an exploded perspective view showing a part of the structure of the tray shown in fig. 11.

FIG. 25 is a cross-sectional view taken along line "XXV-XXV" of FIG. 11.

Fig. 26 is an exploded perspective view illustrating a case and a second heating part separately according to an embodiment of the present invention.

Fig. 27 is a plan view illustrating the second heating part illustrated in fig. 26.

Fig. 28 is an exploded perspective view showing the second heating unit, the receiving coil, and the electromagnetic shield plate shown in fig. 26 separately.

Fig. 29 is a cross-sectional view showing a state of coupling among the second heating unit, the temperature sensor, the receiving coil, and the electromagnetic shield shown in fig. 26.

Fig. 30 is a rear view showing the second control substrate shown in fig. 26.

Fig. 31 is a perspective view separately showing a door frame according to an embodiment of the present invention and various structures provided to the door frame.

Fig. 32 is an exploded perspective view of the door frame shown in fig. 31 and various structures provided in the door frame.

Fig. 33 is an enlarged view showing a part of the door frame shown in fig. 31 and the respective structures provided to the door frame.

Fig. 34 is a view showing a state where the first heating section and the protective grill are removed from the door frame shown in fig. 33.

Fig. 35 to 39 are views showing a process of providing the first heating unit to the door frame.

Fig. 40 is a perspective view showing the housing according to an embodiment of the present invention separated.

Fig. 41 is an exploded perspective view of the housing shown in fig. 40, with the housing separated.

Fig. 42 is a plan expanded view of a sheet material used to manufacture the housing shown in fig. 40.

Fig. 43 is a perspective view showing another example of the housing shown in fig. 40.

Fig. 44 is a plan expanded view of a sheet material used to manufacture the housing shown in fig. 42.

Wherein the reference numerals are as follows:

100: shell body

105: cooking chamber

110: bottom surface

111,115: bottom cover part

120. 130, 130: side surface

125: second slot

135: side cover part

140: back side of the panel

141: back plate

150: rear shell

160: insulating board

170: outer casing

180: base seat

200: tray

205: tray main body

210: placing part

211: first projecting part

213: second projecting part

214: sliding surface

215: placing groove

220: water receiving tank

230: steam cover

231: lid body part

233: steam hole

235: water inlet guide surface

237: water inlet

300: door with a door panel

301: air inlet

303: exhaust port

305: handle bar

310: door top surface portion 320: door frame

320 a: connecting hole

321: joining part

322: setting surface

323: limiting rib

324: stop piece

325: heater mounting part

326: first connecting end fixing part

327: second connecting end fixing part

328: shielding plate

330,335: glass

340,345: cable installation part

343: connecting member

350: front door face

360: input unit

370: a first cooling fan

400: a first heating part

410: heating body

420: first connecting end

421: cylindrical part

422: extension part

423: step

425: key-shaped part

430: second connecting end

440: emitter

450: protective grid

500: first control substrate

600: a second heating part

610: working coil

611: coil mounting base

613: coil

615: coil connection wiring

620: receiving coil

621: coil mounting base

623: coil

630: electromagnetic shielding plate

640: temperature measuring unit

700: second control substrate

710: noise filter PCB

720: coil control PCB

725：IGBT

726: heat radiator

730: second cooling fan

800: hinge assembly

810: hinge part

820: placing bulge

830: hinge shell

831: guide hole

832: first guide rib

833: second guide rib

835: first slot

W: perspective window

Detailed Description

The foregoing objects, features and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art can easily embody the technical idea of the present invention. In describing the present invention, when it is judged that a detailed description of a known technology related to the present invention would obscure the gist of the present invention, a detailed description thereof will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar constituent elements.

Although the terms first, second, etc. are used to describe various constituent elements, these constituent elements are not limited by these terms, of course. These terms are only used to distinguish one constituent element from other constituent elements, and the first constituent element may be the second constituent element unless otherwise explicitly stated in the description.

Hereinafter, the term "upper (or lower)" of a component or "upper (or lower)" of a component means that any component is disposed in contact with the top surface (or bottom surface) of the component, and may mean that another component is interposed between the component and any component disposed above (or below) the component.

In addition, when it is described that a certain constituent element is "connected", "coupled" or "connected" to another constituent element, it is to be understood that the above constituent element may be directly connected or connected to the above other constituent element, another constituent element may be "interposed" between the constituent elements, or each constituent element may be "connected", "coupled" or "connected" by another constituent element.

Throughout the specification, each constituent element may be singular or plural unless otherwise specified.

As used in this specification, an expression in the singular includes a plurality, unless the context clearly dictates otherwise. In the present application, terms such as "consisting of or" including "should not be construed as necessarily including each constituent element described in the specification or including all of various components, and should be construed as being capable of including some of the constituent elements or not including some of the steps, and may further include other constituent elements or steps.

Throughout the specification, unless otherwise specified, when referring to "a and/or B" means a and B or a or B, and unless otherwise specified, when referring to "C to D", it means that C is above and D is below.

Integral structure of cooking apparatus

Fig. 1 is a perspective view illustrating a cooking apparatus according to an embodiment of the present invention, fig. 2 is a perspective view illustrating a door-opened state of the cooking apparatus shown in fig. 1, and fig. 3 is an exploded perspective view illustrating an exploded state of the cooking apparatus shown in fig. 1.

Referring to fig. 1 to 3, a cooking apparatus according to an embodiment of the present invention includes a housing 100, a door 300, a tray 200, and heating parts 400 and 600.

The case 100 forms a frame of the cooking apparatus according to the present embodiment. Accordingly, various components constituting the cooking apparatus are respectively disposed in the housing 100, and the interior of the housing 100 is formed with the cooking chamber 105 to provide a space for cooking food.

In the present embodiment, the case 100 is exemplified as being formed in a hexahedral shape with its top and front surfaces open. That is, the case 100 is provided in a form including a bottom surface 110, a pair of side surfaces 120, 130, and a rear surface 140, and is formed with a space therein, with the top surface and the front surface being open. A cooking chamber 105 surrounded by the bottom 110, the two sides 120, 130 and the back 140 of the housing 100 is formed inside the housing 100.

A tray 200 is disposed in the cooking chamber 105 formed inside the housing 100. The tray 200 is provided to allow food to be seated, and can be detachably provided inside the cooking chamber 105. In addition, the tray 200 may be provided to be removable from the front of the cooking chamber 105 for the convenience of the user.

The tray 200 may be provided to be movable in the front and rear direction in conjunction with the opening and closing operation of the door 300, and such front and rear movement of the tray 200 may be guided by a hinge assembly 800 described later. The detailed description thereof will be described later.

The door 300 is provided to open and close the opened top and front surfaces in the case 100. In the present embodiment, if the case 100 forms the external appearance of the bottom surface, the side surfaces, and the rear surface of the cooking apparatus, the door 300 forms the external appearance of the top surface and the front surface of the cooking apparatus. Such a door 300 may include a door top portion 310 and a door front portion 350.

The door top surface portion 310 constitutes a top surface of the door 300, and corresponds to a configuration of covering the top surface opened in the casing 100 when the door 300 closes the cooking chamber 105 inside the casing 100. Door front portion 350 constitutes the front surface of door 300, and corresponds to a configuration for covering the front surface opened in casing 100 when door 300 closes cooking chamber 105.

In the present embodiment, the door 300 is formed asThe shape is shown as an example. That is, the door 300 is formed so as toA door top surface part 310 forming the top surface of the door 300 and a door front surface part 3 forming the front surface of the door 300 are connected in shape50 in the form of a hollow cylinder. When the door 300 formed in the above-described manner is rotated to open and close the cooking chamber 105, the door is opened and closedThe shape-coupled door top surface portion 310 and door front surface portion 350 rotate together and open and close the cooking chamber 105.

The door 300 is rotatably provided at an upper portion of the housing 100, and rotatably coupled to the housing 100 using a hinge assembly 800 provided at the housing 100 as a medium. In this case, the hinge assemblies 800 are respectively disposed at both sides of the housing 100, and the rear side of the door top surface part 310 is rotatably coupled to each hinge assembly 800.

Also, a handle 305 is provided on the front surface of the door 300, and a user can open and close the cooking chamber 105 by rotating the door 300 in the vertical direction by holding the handle 305.

The heating parts 400 and 600 may be provided to the case 100 or the door 300 to heat the tray 200 disposed in the cooking chamber 105. In this embodiment, the heating units 400 and 600 include a first heating unit 400 disposed on the door 300 and a second heating unit 600 disposed on the housing 100.

The first heating part 400 may be provided at the door 300, and the first heating part 400 may be provided to be able to be received inside the cooking chamber 105 when the door 300 closes the cooking chamber 105. The first heating unit 400 is provided on the door top surface portion 310, and is disposed on the bottom surface side of the door top surface portion 310 facing the bottom surface of the housing 100.

In the present embodiment, a form in which the first heating part 400 is provided to include an electric heater is exemplified. Such a first heating part 400 can heat the food placed on the tray 200 from the upper portion of the tray 200.

The second heating unit 600 is provided in the case 100 and disposed below the tray 200. Such a second heating part 600 is provided in the form of a heating part (e.g., an induction heating part) that heats the tray 200 in a different heating manner from the first heating part 400.

The second heating part 600 may be provided in the form of including a work coil 610 installed at a lower portion of the bottom surface 110 of the case 100, and inductively heats the tray 200 from a lower portion of the tray 200. For this, the tray 200 may be formed of a material that can be inductively heated by the second heating part 600.

In summary, the cooking apparatus according to the present embodiment includes: a housing 100 having a cooking chamber 105 formed therein; a door 300 provided to be able to open the front and upper portions of the cooking chamber 105 at the same time; a first heating part 400 provided to be able to heat the inside of the cooking chamber 105 from the upper part; and a second heating unit 600 that is provided to inductively heat the tray 200 inside the cooking chamber 105 and to allow the tray 200 to be inserted and removed in conjunction with the opening and closing operations of the door 300.

The following will describe in order a specific description of the above-described configuration and other configurations not yet mentioned.

[ Structure of casing ]

Fig. 4 is a perspective view illustrating the housing and the hinge assembly shown in fig. 1 separately.

Referring to fig. 3 and 4, as described above, the case 100 includes the bottom surface 110, the pair of side surfaces 120 and 130, and the rear surface 140, a space is formed inside, and the top surface and the front surface are provided in an open form.

A cooking chamber 105 is formed in an inner space surrounded by the bottom surface 110, the two side surfaces 120, 130, and the back surface 140 of the casing 100, and it may be provided that the tray 200 can be taken out from such a cooking chamber 105.

The second heating unit 600 may be provided at a lower portion of the bottom surface of the housing 100, and an electric component related to the operation of the second heating unit 600, for example, a second control board 700, which will be described later, may be provided behind the rear surface of the housing 100.

In addition, hinge assemblies 800 may be provided outside both side surfaces 120, 130 of the housing 100, respectively, and the door 300 may be rotatably provided to the housing 100 by being coupled to the hinge assemblies 800 provided in this manner.

A rear case 150 is disposed on the back of the rear surface 140 of the housing 100, and the rear case 150 accommodates a second control board 700 described later. The second control board 700 is accommodated in the rear case 150 and disposed on the rear side of the case 100, and an insulating plate 160 is disposed between the rear surface 140 of the case 100 and the rear case 150.

The insulating plate 160 insulates heat inside the cooking chamber 105 from being transferred to the second control substrate 700 side through the rear surface 140 of the case 100, and plays a role of insulating between the rear case 150 provided with the second control substrate 700 and the case 100.

In addition, the housing 100 of the present embodiment may further include a casing 170, and the casing 170 is disposed to cover the two side surfaces 120 and 130 and the back surface 140 of the housing 100. Such an outer case 170 surrounds and protects the hinge housing 800 provided at both sides 120, 130 of the housing 100 and the second control substrate 700 provided at the rear surface 140 of the housing 100 from the outside, and forms the appearance of the side and rear sides of the cooking apparatus.

[ Structure of door ]

Fig. 5 is a perspective view illustrating a door according to an embodiment of the present invention as separated, and fig. 6 is a bottom perspective view illustrating a bottom surface side of the door shown in fig. 5. Fig. 7 is an exploded perspective view showing the structure of the door shown in fig. 6, and fig. 8 is a cross-sectional view taken along line viii-viii of fig. 7. In addition, fig. 9 is a sectional view taken along line "ix-ix" of fig. 6, and fig. 10 is a sectional view schematically showing the flow of air inside the door according to an embodiment of the present invention.

Referring to fig. 5 to 9, the door 300 is formed with a door top surface part 310 constituting a top surface of the door 300 and a door front surface part 350 constituting a front surface of the door 300Shaped and integrally connected.

The door top surface portion 310 is formed in a quadrangle, and may be formed in a quadrangle whose length in the left-right direction is longer than that in the front-rear direction. The door frame 320 may be provided to the door top surface part 310. The door frame 320 is disposed at a lower portion of the door top surface portion 310, and the first heating part 400 may be disposed at a lower portion of the door top surface portion 310 in such a manner as to be coupled to the door frame 320.

The door 300 may include a see-through window W. The see-through window W is disposed on the door top surface portion 310, and may be installed to be located at a central portion in a plane direction of the door top surface portion 310.

Such a see-through window W may include a pair of glasses 330,335 spaced apart by a predetermined interval in the up-down direction to form a space portion therein. For example, one glass 330 (hereinafter, referred to as "first glass") may be provided on the door top surface portion 310, and the other glass 335 (hereinafter, referred to as "second glass") may be provided on the door frame 320.

Each of the door top surface part 310 and the door frame 320 may be formed with a through hole. The through-holes may be formed at a central portion in the plane direction of the door top surface portion 310 and a central portion in the plane direction of the door frame 320, respectively.

According to the present embodiment, the first glass 330 covers the through hole formed in the door top surface portion 310 from above and is provided to the door top surface portion 310, and the second glass 335 covers the through hole formed in the door frame 320 from above and is provided to the door frame 320.

The first glass 330 and the second glass 335 may be made of glass of a transparent or translucent material, and the transparent window W may be a through hole portion formed in the first glass 330 and the second glass 335.

The user can confirm the cooking state of food in the cooking chamber 105 by looking down the inside of the cooking chamber 105 from above through the see-through window W formed as described above. Due to the characteristics of the mini oven, it can be considered that the cooking apparatus of the present embodiment is used at a position significantly lower than the face of the user with a high frequency. Accordingly, the see-through window W formed at the top surface of the door 300 can be provided in a manner that allows the user to easily and conveniently confirm the cooking state of the food without lowering his posture or bending.

The pair of glasses 330 and 335 forming the see-through window W are arranged in different configurations, that is, one is coupled to the door top surface portion 310 and the other is coupled to the door frame 320, and are arranged at a predetermined interval from each other. Therefore, a space between the two glasses 330 and 335 is formed inside the transparent window W.

The air layer formed in the spaced space formed in the above-described manner serves to prevent heat, which heats the glass 335 directly exposed to the cooking chamber 105, from being transferred to the glass 330 located at the outermost side.

Accordingly, the see-through window W having the double window structure has a function of preventing occurrence of a safety accident due to overheating of the see-through window W and fogging due to a temperature increase of the see-through window W.

On the other hand, the first heating unit 400 is provided on the door top surface portion 310 and is disposed in a region that is not exposed through the transparent window W when viewed from above. Such first heating unit 400 is disposed on the front outer side and the rear outer side of the transparent window W on the horizontal plane formed by the door top surface portion 310. That is, the cooking apparatus of the present embodiment may include a pair of first heating parts 400 respectively disposed at the front outer side and the rear outer side of the transparent window W.

If the first heating part 400 is disposed in the region exposed through the transparent window W, not only the appearance is not good, but also a problem may occur in securing the view through the transparent window W, and a problem of a temperature increase of a portion of the transparent window W may also occur.

Further, since the shape of the door front portion 350 is a quadrangle in which the length in the left-right direction is longer than the length in the front-rear direction, the length of the first heating unit 400 can be increased by arranging the first heating unit 400 on the front outer side and the rear outer side of the transparent window W, and the thermal power of the first heating unit 400 can be expected to be improved as the length of the first heating unit 400 is increased.

In view of these points, the first heating part 400 is disposed at the front outer side and the rear outer side of the see-through window W, respectively, thereby contributing to ensuring functional advantages such as maintaining the beauty, securing the field of vision, suppressing the temperature rise of the see-through window W, and increasing the thermal power of the first heating part 400.

The door front portion 350 can be formed in a quadrangular shape, similarly to the door top portion 310. However, if the door top surface part 310 forms a plane in the lateral direction, the door front surface part 350 forms a plane in the longitudinal direction.

For example, the door front portion 350 may be formed to extend downward from a front end of the door top portion 310. The connection between the door front surface portion 350 and the door top surface portion 310 may be configured such that the internal space of the door front surface portion 350 and the internal space of the door top surface portion 310 are connected to each other. That is, the door 300 can have the door front parts 350 and 350 connected to each other with the inner space thereofThe door top surface part 310 is integrally connected toThe form of the shape is provided.

The input unit 360 and the first control board 500 may be disposed on the door front portion 350. In the present embodiment, a space portion is formed in the door front portion 350. At least a portion of the input part 360 and the first control substrate 500 may be accommodated in such a space part.

The input part 360 may include various operation switches for operating operation control of the cooking apparatus according to the present embodiment. For example, the input part 360 may include, for example, an operation switch for turning on/off the first heating part 400 or adjusting thermal power, an operation switch for turning on/off the second heating part 600 or adjusting thermal power, a timing operation switch for adjusting an operation time of the first heating part 400 or the second heating part 600 (refer to fig. 3), and the like. Such an input part 360 may be provided to be exposed to the front of the door front part 350, and a user may directly operate such an input part 360 to adjust the motion of the cooking apparatus.

The first control board 500 is disposed inside the door front portion 350. Various elements, circuits, and the like related to the reception of an operation signal input through the input section 360, the generation of a control signal for controlling the operations of the first heating section 400 and the second heating section 600, and the like are provided in the first control substrate 500.

The first control substrate 500 needs to be electrically connected to the input part 360, the first heating part 400, and the second heating part 600. Similarly to the input unit 360, the first control board 500 is disposed on the door front portion 350, and is disposed at a position very close to the input unit 360 and also at a position very close to the first heating unit 400 disposed on the same door 300.

According to the present embodiment, the input part 360 is electrically connected to the first control substrate 500 in a form of being directly mounted on the first control substrate 500, and the first heating part 400 may electrically connect a cable, which is provided through the inside of the door front surface part 350 and the inside of the door top surface part 310 connected to each other, to the first control substrate 500 as a medium.

That is, the first control substrate 500, the input section 360, and the first heating section 400, which need to be electrically connected to each other, are arranged at positions very close to and spatially connected to each other, and therefore, the work for establishing electrical connection between these can be easily and quickly achieved, and the connection structure between them can be maintained in a very stable state.

In addition, the cooking apparatus of the present embodiment may further include cable mounting parts 340, 345. The cable attachment portions 340 and 345 are disposed between the door top surface portion 310 and the door frame 320 disposed in the vertical direction, and are disposed outside both sides of the see-through window W.

The connecting members 343 are disposed on the front outer side and the rear outer side of the see-through window W, respectively. Such a pair of connecting members 343 connect the pair of cable mounting parts 340,345 spaced apart from each other. That is, the pair of cable installation parts 340 and 345 and the connecting member 343 are provided in a "mouth" shape surrounding the see-through window W on the outside.

The combination of the cable attachment portions 340 and 345 and the connecting member 343 provided in the above-described manner is provided to the door top surface portion 310 in a form of being inserted into a space portion formed between the door top surface portion 310 and the door frame 320.

As described above, the inside of the door top surface portion 310 provided with the cable attachment portions 340 and 345 is connected to the inside of the door front surface portion 350. Cables C1 and C2 are provided in the cable attaching portions 340 and 345 provided in the door top surface portion 310, and the cables C1 and C2 pass through the inside of the door top surface portion 310 and the inside of the door front surface portion 350 connected to each other, thereby connecting the first control board 500 and the first heating unit 400 to each other.

The power cable C2 for supplying power to the first heating unit 400 and the first control board 500 may be provided in any one of the cable attachment portions 340 and 345 disposed outside the transparent window W. In addition, a signal cable C1 for transmitting a control signal generated from the first control board 500 to the first heating unit 400 may be provided in the other of the cable attachment portions 340 and 345 disposed outside the transparent window W.

That is, in the door 300, the first heating section 400 is disposed on both sides in the front-rear direction with respect to the transparent window W, and the power cable C2 and the signal cable C1 are disposed on both sides with respect to the transparent window W.

Such a configuration structure of the first heating part 400, the power cable C2, and the signal cable C1 is a design result in consideration of the configuration structure of the first heating part 400 and the hinge assembly 800.

According to the present embodiment, each of the first heating parts 400 is arranged in such a manner that the heating body thereof extends long in the left-right direction. The hinge assemblies 800 (see fig. 2) are disposed on the left and right sides about the see-through window W.

The power cable C2 and the signal cable C1 are connected to some components disposed in the door 300, such as the first heating unit 400 and the first control board 500, and to some components disposed in the housing 100, such as the second control board 700 (see fig. 30).

If such power cable C2 and signal cable C1 are to pass between the door 300 and the case 100 in a form as unexposed as possible, it is most preferable to pass through a portion provided with the hinge assembly 800 as the only connecting portion between the door 300 and the case 100.

As an example, the section of the power cable C2 and the signal cable C1 connecting the housing 100 and the door 300 to each other may be configured in a form of passing through the inside of the hinge assembly 800. Thereby, it is possible to suppress the power cable C2 and the signal cable C1 from being exposed to the outside of the cooking apparatus at the section between the case 100 and the door 300, and to avoid damage of the power cable C2 and the signal cable C1.

In view of the fact that the heating element of the first heating unit 400 is arranged to extend long in the left-right direction, the power cable C2 and the signal cable C1 are preferably arranged on the side away from the heating element as far as possible and are arranged to extend in a direction different from the direction in which the heating element extends.

This is a result of design to avoid the heat generated in the first heating section 400 from affecting the power cable C2 and the signal cable C1. In addition, in consideration of the arrangement of the plurality of first heating sections 400 spaced apart in the front-rear direction, the configuration in which the power cable C2 and the signal cable C1 are arranged on both right and left sides of the first heating section 400 is advantageous in connecting the first heating section 400 to the power cable C2 and the signal cable C1. .

In the present embodiment, the power cable C2 and the signal cable C1 may be disposed at a distance from each other in the left-right direction through the see-through window W, and may be provided in different cable attachment portions 340 and 345.

At this time, the power cable C2 passes through the inside of any one of the hinge assemblies 800 respectively disposed at both sides of the housing 100 to be disposed at the cable mounting parts 340 and 345 adjacent to the hinge assembly 800, and the signal cable C1 may pass through the inside of the other one of the hinge assemblies 800 respectively disposed at both sides to be disposed at the cable mounting parts 340 and 345 adjacent to the hinge assembly 800.

For example, the power cable may pass through the inside of the hinge assembly 800 disposed at the left side of the housing 100 and be disposed in the cable mounting parts 340 and 345 at the left side of the door 300, and the signal cable C1 may pass through the inside of the hinge assembly 800 disposed at the right side of the housing 100 and be disposed in the cable mounting parts 340 and 345 at the right side of the door 300.

As described above, the wiring work for establishing the electric connection work between the respective components constituting the cooking apparatus can be performed more simply and quickly by the structure in which the cables having different functions are arranged at different positions, respectively, and the maintenance work related thereto can also be performed more easily.

[ Cooling Structure inside door ]

Fig. 10 is a sectional view schematically showing the flow of air inside a door according to an embodiment of the present invention.

Referring to fig. 10, a space portion is formed inside both the door top surface portion 310 and the door front surface portion 350. In particular, a space is formed between a pair of glasses 330 and 335 disposed at a predetermined interval in the inside of the see-through window W provided in the door top surface portion 310. The space inside the door top surface portion 310 including the see-through window W and the space inside the door front surface portion 350 are connected to each other.

An air inlet 301 is formed at the lower end of the door front portion 350. The air inlet 301 is formed to penetrate through the lower end of the door front portion 350, and a passage is formed in the door front portion 350 such that a space inside the door front portion 350 is opened to the outside.

The rear end of the door top surface portion 310 is formed with an air outlet 303. The exhaust port 303 is formed to penetrate the rear end of the door top surface portion 310, and a passage is formed in the door top surface portion 310 so that a space inside the door top surface portion 310 is opened to the outside.

In addition, the cooking apparatus of the present embodiment may further include a first cooling fan 370 disposed inside the door 300. The first cooling fan 370 may be disposed inside the door top surface portion 310 or inside the door front surface portion 350. In the present embodiment, a space portion in which the first cooling fan 370 is provided inside the door front portion 350 is exemplified. This is a design in consideration of the lack of the remaining space in the door top surface portion 310 due to the transparent window W, the first heating portion 400, and the like provided in the door top surface portion 310.

The first cooling fan 370 provided in the above-described manner generates an air flow such that the external air flows into the interior of the door 300 through the air inlet 301 and the air inside the door is discharged through the air outlet 303.

As described above, according to the air flow generated by the first cooling fan 370, the external air flows into the door front portion 350 through the air inlet 301, and thus the external air flowing into the door front portion 350 cools the first control substrate 500. The air cooled by the first control board 500 flows into the door top surface portion 310, passes through the space inside the see-through window W, and is then discharged to the outside of the door 300 through the exhaust port 303.

When the cooking apparatus operates, the temperature level of the first control substrate 500 is much lower than the temperature of the transparent window W heated by the first heating part 400. Therefore, the air that has flowed into the interior of the door 300 through the intake port 301 and cooled the first control substrate 500 can pass through the interior of the see-through window W at a sufficiently low temperature to cool the see-through window W. Therefore, the cooling of the first control substrate 500 and the cooling of the see-through window W can be sufficiently and efficiently performed according to the air flow generated by the first cooling fan 370.

According to the cooling structure of the inside of the door 300 formed in the above-described manner, overheating and deterioration of some components such as the first control substrate 500 in the inside of the door 300 are suppressed, so that malfunction, low performance, and the like of the cooking apparatus can be effectively suppressed.

In addition, heat transfer between the pair of glasses 330,335 constituting the see-through window W is blocked by the cooling air passing through the inside of the door 300, thereby suppressing the occurrence of overheating of the see-through window W, and thus it is possible to effectively reduce the occurrence of accidents (injuries such as burns) occurring due to the user's contact with the see-through window W.

[ structure for taking out trays ]

Fig. 11 is a perspective view illustrating a tray according to an embodiment of the present invention, and fig. 12 is a sectional view schematically illustrating a coupling structure between the tray and a seating protrusion shown in fig. 11.

Referring to fig. 2 to 3 and 11 to 12, a tray 200 is disposed in a cooking chamber 105 formed inside the casing 100. The tray 200 may be provided to be movable in the front and rear direction in conjunction with the opening and closing motion of the door 300, and such front and rear movement of the tray 200 may be guided by the hinge assembly 800.

The tray 200 may include a tray main body 205 and a seating portion 210.

The tray main body 205 has a bottom surface formed in a shape corresponding to the bottom surface 110 of the case 100. In the present embodiment, the tray main body 205 is illustrated as a box shape formed to be opened at an upper portion and flat in the up-down direction. The bottom surface of the tray main body 205 is formed in a shape corresponding to the bottom surface 110 of the case 100, for example, a quadrangular plate shape, and four side surfaces of the tray 200 are formed in a form extending upward from edges of the bottom surface of the tray 200, respectively.

The placement portions 210 are respectively provided on a pair of side surfaces of the tray main body 205 that face the left and right side surfaces of the housing 100. The seating portion 210 may include a first protrusion 211 protruding from an upper end of a side of the tray main body 205 in an outer direction of the tray main body 205, and a second protrusion 213 extending downward from an outer end of the first protrusion 211. For example, the seating portion 210 may be formed as the first and second protrusion portions 211 and 213Form of shape connection.

When the door is opened, the hinge assembly 800 is coupled with the rotation of the door 300 to take out the tray 200 forward from the inside of the cooking chamber 105. In addition, when the door is closed, the hinge assembly 800 may be inserted backward toward the inside of the cooking chamber 105 in conjunction with the rotation of the door 300. Such hinge assemblies 800 are respectively provided at left and right sides of the case 100 to be respectively disposed at outer sides of the left and right sides of the tray 200, and each hinge assembly 800 may include a hinge portion 810 and a seating protrusion 820.

The hinge portion 810 is provided to be hinged to the rear side of the door top surface portion 310. Such a hinge portion 810 can change a state in conjunction with the rotation of the door 300.

The seating protrusion 820 is connected with any one of the connection members of the hinge part 810 inside the hinge housing 830, and passes through the first slot 835 formed on the hinge housing 830 and the second slot 125 formed on the housing 100 to protrude toward the inside of the cooking chamber 105. Here, the second slot 125 is formed at a side of the case 100, and may be formed in a position and shape overlapping with the first slot 835.

The tray 200 may be seated on the seating protrusion 820. Specifically, the tray 200 may be seated to the seating protrusion 820 by clamping the seating protrusion 820 into the seating groove 215 formed at the side of the tray 200.

According to the present embodiment, the seating grooves 215 are formed in the seating portions 210 respectively provided at both side surfaces of the tray 200. The seating groove 215 may be formed in a shape that the seating portion 210 is cut from a lower end thereof, and in more detail, the second protrusion 213 is cut from a lower end thereof. The seating protrusion 820 may be clamped into the seating groove 215 by a lower portion cut in the seating groove 215, and a clamping coupling between the tray 200 and the seating protrusion 820 may be achieved by such a clamping coupling between the seating groove 215 and the seating protrusion 820.

In addition, a sliding surface 214 may be formed at the seating portion 210, more specifically, at a lower end of the second protrusion 213. The sliding surface 214 is provided such that the seating protrusion 820 contacting the lower end of the second protrusion 213 can slidably move. Such a sliding surface 214 may extend in the front-rear direction and be connected to the seating groove 215.

The user may cook using the cooking apparatus in a state that the tray 200 is installed inside the cooking chamber 105, or may take out the tray 200 from the cooking chamber 105 to the outside to take out the cooked food or wash the tray 200.

When the tray 200 is taken out of the cooking chamber 105 to the outside, the tray 200 may be slightly lifted upward and then taken out such that the seating protrusion 820 can be escaped from the seating groove 215.

In addition, when it is required to install the taken-out tray 200 to the inside of the cooking chamber 105 again, it is only required to push the tray 200 into the inside of the cooking chamber 105 so that the seating protrusion 820 can be caught in the seating groove 215.

However, since the seating groove 215 is located at the lower portion of the tray 200 and the seating protrusion 820 is hidden by the tray 200, it is difficult for the user to accurately grasp the positions of the seating groove 215 and the seating protrusion 820.

In view of these points, in the present embodiment, a sliding surface 214 is formed extending in the front-rear direction at the lower end of the second projecting portion 213, the sliding surface 214 being connected to the seating groove 215.

Therefore, when the user pushes the tray 200 into the inside of the cooking chamber 105, it is not necessary to clip the seating protrusion 820 into the seating groove 215 accurately from the beginning, and it is only necessary to push the tray 200 such that the sliding surface 214 is placed on the seating protrusion 820, and then move the tray 200 back and forth.

In this process, the seating protrusion 820 may slide on the sliding surface 820 due to the tray 200 moving in the front-rear direction and then be clamped into the seating groove 215.

That is, in order to mount the tray 200 to the inside of the cooking chamber 105, it is not necessary to accurately clip the seating protrusion 820 into the seating groove 21, but only by a simple action of moving the tray 200 back and forth after being placed on the seating protrusion 820, the clip coupling between the seating protrusion 820 and the seating groove 215 can be achieved, and thus the clip coupling between the seating protrusion 820 and the tray 200 can be simply and rapidly achieved.

The sandwiching coupling structure between the seating groove 215 and the seating protrusion 820 as described above is only an example, and various other modified embodiments may exist.

Fig. 13 is a sectional view schematically showing another example of the structure between the tray and the set projection shown in fig. 12, and fig. 14 is a view showing a coupling process between the tray and the set projection shown in fig. 13. Fig. 15 is a sectional view schematically showing still another example of the coupling structure between the tray and the set projection shown in fig. 12, and fig. 16 is a view showing a coupling process between the tray and the set projection shown in fig. 15.

As another modified example of the sandwiching coupling structure between the seating groove 215 and the seating protrusion 820, as shown in fig. 13, an inclined surface 215a may be formed between the seating groove 215 and the sliding surface 214. As shown in fig. 14, the inclined surface 215a may be formed on a path where the seating protrusion 820 sliding in a state of being in contact with the sliding surface 214 is inserted into the seating groove 215 to guide the movement of the seating protrusion 820.

As described above, when the inclined surface 215a is formed between the seating groove 215 and the sliding surface 214, it is possible to reduce impact and noise that may occur during the seating protrusion 820 is sandwiched in the seating groove 215, and thus, the sandwiching coupling between the tray 200 and the seating protrusion 820 can be more smoothly and stably achieved.

The inclined surface 215a may be disposed at the rear side of the seating groove 215. This is a result of designing in consideration that, when the user pushes the tray 200 into the inside of the cooking chamber 105 to be installed to the inside of the cooking chamber 105, the tray 200 is not inserted deeply more than the position where the sandwiching coupling is performed between the seating groove 215 and the seating protrusion 820.

As described above, when the inclined surface 215a is formed at the rear side of the seating groove 215, the sandwiching coupling between the seating groove 215 and the seating protrusion 820 can be smoothly and stably guided when the tray 200 is mounted on the seating protrusion 820 in a state where the tray 200 is not inserted deeply compared to the position where the sandwiching coupling between the seating groove 215 and the seating protrusion 820 is performed.

As another of the alternative embodiments of the sandwiching coupling structure between the seating groove 215 and the seating protrusion 820, as shown in fig. 15, a sandwiching groove 215b may be further provided in the second protrusion 213. The nip groove 215b may be formed in a shape in which a portion of the second protrusion 213 is cut, and may be formed in a groove shape recessed in the front-rear direction. Such a sandwiching groove 215b is formed to be connected with the seating groove 215, and may be formed in a concave shape recessed in the front-rear direction at an upper end of the seating groove 215.

The clamping groove 215b may be disposed at a front side of the seating groove 215. Therefore, as shown in fig. 16, when the user further pushes the tray 200 backward toward the inside of the cooking chamber 105 in a state where the seating protrusion 820 is inserted into the seating groove 215, the seating protrusion 820 caught in the seating groove 215 can be caught in the catching groove 215b extending forward in the seating groove 215.

As described above, when the seating protrusion 820 and the catching groove 215b are caught in the catching engagement, the movement of the tray 200 in the up-and-down direction is restricted due to the engagement, and thus, the risk of the tray 200 falling down in the forward direction is greatly reduced.

On the other hand, the seating protrusion 820 may move in the front and rear direction in conjunction with the state change of the hinge part 810. Such a seating protrusion 820 enables the tray 200 seated on the seating protrusion 820 to move in the front-rear direction. That is, the tray 200 seated on the seating protrusion 820 may move in the front and rear direction in conjunction with the front and rear movement of the seating protrusion 820.

Fig. 17 is a perspective view showing a door-closed state of a cooking apparatus according to an embodiment of the present invention, fig. 18 is a sectional view taken along the line "xviii-xviii" of fig. 17, and fig. 19 is a sectional view taken along the line "xix-xix" of fig. 17. In addition, fig. 20 is a perspective view showing an opened state of a door of the cooking apparatus shown in fig. 17, fig. 21 is a sectional view taken along a line "xxi-xxii" of fig. 20, and fig. 22 is a sectional view taken along a line "xxii-xxii" of fig. 20.

According to the present embodiment, as shown in fig. 17 and 18, when the door 300 is in a state of closing the cooking chamber 105, the tray 200 has been inserted into the inside of the cooking chamber 105. Also, the seating protrusion 820 where the tray 200 is seated is disposed at a position biased to the rear side of the cooking chamber 105.

The rear side of the tray 200 may be supported by a pair of seating protrusions 820. And the front side of the tray 200 may be supported by a pair of supporting rollers 115.

That is, the tray 200 may be stably supported by the pair of seating projections 820 disposed at the rear side and the pair of supporting rollers 215 disposed at the front side, and may be movably provided to the cooking chamber 105 in the front-rear direction.

The support rollers 115 are disposed on both side surfaces 120 and 130 of the housing 100, respectively, and may be disposed on the front side of the housing 100 adjacent to the door 300. The seating portions 210 of the tray 200 may be seated on the support rollers 115, and in more detail, the sliding surfaces 214 (refer to fig. 11) may be seated on the support rollers 115. Such supporting rollers 115 rotate as the tray 200 moves, thereby being capable of supporting the tray 200 so that the tray 200 can move smoothly.

Also, the door 300 may rotatably provide the hinge assembly 800 as a medium to the housing 100, and may rotate in the up and down direction to open or close the cooking chamber 105.

The hinge assemblies 800 are respectively disposed at both sides of the housing 100, and rear sides of the door top surface part 310 are respectively rotatably coupled to the hinge assemblies 800.

That is, the rear left and right side edge portions of the door top surface portion 310 are rotatably coupled to the hinge assemblies 800 disposed at both sides of the housing 100, respectively. The door 300 is rotated in the vertical direction about the rear side of the door top surface portion 310 rotatably coupled to the hinge assembly 800, thereby opening and closing the top and front surfaces of the housing 100.

Referring to fig. 17 to 19, the hinge assembly 800 may include a hinge housing 830, a hinge part 810, a seating protrusion 820, and a conversion output part 840.

The hinge housing 830 forms an external appearance of the hinge assembly 800 and internally houses the hinge portion 810 and a portion of the seating protrusion 820 and the switching output portion 840. Various structures for supporting the hinge part 810, the seating protrusion 820, and the conversion output part 840 may be formed in such a hinge housing 830.

The hinge 810 is provided to the hinge housing 830 in a position changeable manner. Such a hinge portion 810 may be provided to the hinge housing 830 in a form rotatable along a track corresponding to a rotation track of the door 300. The upper end of such a hinge portion 810 may be combined with the door 300. As described above, the hinge 810 coupled to the door 300 may be interlocked with the rotation of the door 300, thereby changing the posture of the hinge 810. Also, the rotation track and range of the door 300 coupled to the hinge portion 810 can be guided by the hinge portion 810.

As an example, the hinge portion 810 may be provided in a flat plate shape, and may be formed in a shape curved along a shape corresponding to a rotation track of the door 300.

Also, a guide hole 831 may be provided in the hinge housing 830, the guide hole 831 being formed in a shape corresponding to the rotation track of the door 300. The guide hole 831 may be formed to penetrate in the left and right direction on the hinge housing 830. The guide hole 831 formed as described above may provide a passage for guiding a rotation path of the hinge portion 830 on the hinge housing 830.

For example, the guide hole 831 may be provided as a passage that rises toward the front and falls toward the rear.

A stopper 811 may be included in the hinge portion 810. The stopper 811 may be provided to protrude on the hinge portion 810, and may be provided to protrude in the left-right direction. Such a stopper 811 may be inserted into the guide hole 831 and may move along a passage formed by the guide hole 831. That is, the stopper 811 may guide the rotation of the hinge portion 810 while moving along the guide hole 831.

In addition, the stopper 811 may interfere with the hinge housing 830 at the front and upper end portions of the guide hole 831 to restrict the hinge portion 810 moving forward and upward from further moving, and may interfere with the hinge housing 830 at the rear and lower end portions of the guide hole 831 to restrict the hinge portion 810 moving backward and downward from further moving. That is, the stopper 811 may limit the moving range of the hinge portion 810 to a range corresponding to the range formed by the guide hole 831.

The seating protrusion 820 is connected to any one of the structures constituting the conversion output part 840 inside the hinge housing 830, and passes through the first slot 835 formed on the hinge housing 830 and the second slot 125 formed on the housing 100 to protrude toward the inside of the cooking chamber 105. Here, the second slot 125 is formed at a side of the case 100, and may be formed in a position and shape overlapping with the first slot 835.

The conversion output part 840 is provided inside the hinge housing 830. The conversion output part 840 may convert a force applied by the posture change of the hinge part 810 into a force in a linear direction for moving the seating protrusion 820 in the front-rear direction. Such a conversion output 840 may include a moving member and a conversion member.

The moving member corresponds to a constitution of moving the seating protrusion 820 in the front-rear direction. The conversion member is configured to move the moving member in the front-rear direction in conjunction with a change in the posture of the hinge unit 810 (i.e., movement of the hinge unit 810).

As an example, the conversion output portion 840 may include a belt 841, a plurality of rotating gears 842, 843, 844, 845, and a rack 846. Here, the belt 841 and the plurality of rotary gears 842, 843, 844, 845 corresponding to the conversion member are exemplified. The rack 846 is illustrated as corresponding to a moving member.

The belt 841 is provided in the form of an open timing belt (Timingbelt) having a gear formed on at least one of the top and bottom surfaces. The belt 841 may be provided such that a first guide rib 832 projected from an inner side surface of the hinge housing 830 restricts an up-and-down position, and may guide a forward-and-backward movement path.

A rear-side end of the belt 841 may be connected with the hinge portion 810. Such a belt 841 can move in the front-rear direction in conjunction with the posture change of the hinge portion 810. For example, when the hinge portion 810 moves forward and upward, the belt 841 can move forward in conjunction with the hinge portion 810. When the hinge 810 moves backward and downward, the belt 841 can move backward in conjunction with the hinge 810.

The gears formed at the belt 841 may be engaged with a plurality of rotating gears 842, 843, 844, 845.

Among the plurality of rotating gears 842, 843, 844, 845, the first rotating gear 842 is closest to the belt 841. In the present embodiment, the first rotating gear 842 is illustrated as including a Timing gear (Timing gear). The first rotating gear 841 is engaged with the belt 842 to rotate in conjunction with the movement of the belt 841.

The second rotating gear 843 and the third rotating gear 844 are arranged between the first rotating gear 842 and the fourth rotating gear 845 to transmit the rotation of the first rotating gear 842 to the fourth rotating gear 845.

That is, the belt 841 is moved in conjunction with the posture change of the hinge portion 810, and the plurality of rotary gears 842, 843, 844, and 845 are rotated in conjunction with the movement of the belt 841, and as a result, it is considered that the posture change of the hinge portion 810 can cause the rotation of the fourth rotary gear 845.

As described above, the rotating fourth rotating gear 845 may be engaged with the rack 846 disposed at the lower portion thereof. The rack 846 may be provided to limit the up and down position by the second guide rib 833 protruded from the inner side surface of the hinge housing 830, and may guide the forward and backward movement path.

The rack 846 may be moved in the front and rear direction in conjunction with the rotation of the fourth rotating gear 845. For example, when the hinge portion 810 moves forward and upward, and thus the fourth rotating gear 845 rotates in the first direction, the rack 846 may move forward in conjunction with the fourth rotating gear 845 (refer to fig. 22). When the hinge portion 810 moves rearward and downward and the fourth rotating gear 845 rotates in a second direction opposite to the first direction, the rack 846 may move rearward in conjunction with the fourth rotating gear 845 (see fig. 21).

The seating protrusion 820 is coupled to the rack 846. Accordingly, the seating protrusion 820 may move in the front and rear directions in conjunction with the movement of the rack 846. For example, when the rack 846 is moved forward, the seating protrusion 820 is also moved forward accordingly, and when the rack 846 is moved backward, the seating protrusion 820 is also moved backward accordingly.

In summary, the hinge assembly 800 having the above-described configuration is configured such that the states of the respective structures constituting the hinge assembly 800, i.e., the hinge portion 810 and the switching output portion 840 are changed in conjunction with the rotation of the door 300, and the respective structures changed in state can move the seating protrusion 820 in the front and rear directions.

As shown in fig. 20 to 22, when the door 300 is rotated upward to open the cooking chamber 105, the state of the hinge portion 810 of the hinge assembly 800 is changed by the rotational force due to the rotation of the door 300, and thus, the seating protrusion 820 is moved forward. The tray 200 may be moved forward by the seating protrusion 820 moved forward in this manner, so that the tray 200 may be taken out of the cooking chamber 105 to the outside.

That is, when the door 300 is opened, the tray 200 is automatically taken out, and thus, the user can easily and safely put the food to be cooked on the tray 200, or can take out the cooked food put on the tray 200 from the tray 200, or can easily take out and move the tray 200 taken out from the front from the inside of the cooking chamber 105.

Further, the cooking apparatus of the present embodiment is configured such that the door 300 can open the front and top surfaces of the cooking chamber 105. Therefore, the user can put the food or the tray 200 into or out of the cooking chamber 105 with a more expanded passage than the case where the door 300 opens only the front surface or only the top surface of the cooking chamber 105.

That is, the cooking apparatus of the present embodiment may not only provide an expanded passage that enables a user to more easily and conveniently put food or tray 200 into or take food out of cooking chamber 105, but also provide a function that tray 200 is automatically taken out when door 300 is opened to more easily and conveniently take food or tray 200 out.

In addition, the cooking apparatus of the present embodiment can also provide the following functions at the same time: as long as the tray 200 is seated on the seating protrusion 820, the tray 200 is automatically inserted into the inside of the cooking chamber 105 when the door 300 is closed. This function may eliminate the need to put a hand inside the cooking chamber 105 filled with hot air while cooking is being performed, when the tray 200 is taken out and put into the cooking chamber 105, thereby contributing to improvement of convenience and safety of the cooking apparatus.

In addition, according to the cooking apparatus of the present embodiment, since the door 300 is not opened forward but is opened by being rotated upward, the center of gravity of the cooking apparatus is not tilted forward even when the door 300 is opened. Instead, the center of gravity of the door 300 moves more rearward when the door 300 is opened than when the door 300 is closed.

As described above, in the structure in which the center of gravity moves rearward when the door 300 is opened, the risk of the cooking appliance tipping forward when the door 300 is opened is greatly reduced. In addition, in this structure, it is easy to increase the weight of the tray 200, but even if the weight of the tray 200 increases, the risk that the cooking apparatus falls down forward is low. That is, in the above-described structure, the tray 200 can be used thicker and heavier than the structure of the door opened forward.

Since the thicker and heavier the tray 200 is, the better the high-temperature cooking performance is, and the easier the long-time heat preservation is, the thicker and heavier the tray 200 is, and accordingly, the better cooking performance can be expected.

In addition, the tray 200, which can be used in an environment heated by the induction heating section, is generally heavier than a conventional tray. Therefore, if a thicker and heavier tray 200 than a conventional tray can be used, even if the second heating part 600 is provided in the form of an induction heating part, the tray 200 suitable for this can be provided.

Structure for suppressing turnover in cooking apparatus

As described above, in the cooking apparatus of the present embodiment, when the door 300 is opened, the tray 200 can be taken out from the front. Also, the tray 200 may be provided in a thicker and heavier form than a conventional tray to improve high-temperature cooking performance and heat-retaining performance.

In such a state where the tray 200 is taken out from the front, the center of gravity of the cooking apparatus is inclined forward according to the degree to which the tray 200 is taken out, whereby the risk of the cooking apparatus tipping forward inevitably increases.

In view of these aspects, the cooking apparatus of the present embodiment includes various forms of constitutions for preventing the cooking apparatus from tipping forward when the door 300 is opened.

Hereinafter, each configuration for preventing the cooking apparatus from falling over forward when the door 300 is opened will be described in detail.

Fig. 23 is a diagram showing a state of change in the center of gravity of the cooking apparatus in the door-open state.

Referring to fig. 20 to 23, the hinge parts 810 are disposed on both side surfaces 130 of the case 100 and are disposed adjacent to the back surface 140 of the case 100, respectively. That is, the hinge parts 810 are disposed behind both sides of the case 100.

The hinge portion 810 is coupled to the door 300 and coupled to the rear side of the door top surface portion 310. That is, the hinge parts 810 are coupled to the rear of both sides of the door top part 310, respectively, and the door 300 can open or close the cooking chamber 105 while rotating in the vertical direction around the rear side of the door top part 310 coupled to the hinge parts 810 as described above.

The door 300 is rotatable about the rear side of the door top surface portion 310 such that the door 300 is located at a position further rearward in a state where the front and top surfaces of the casing 100 are opened (hereinafter, referred to as an "opened state") than in a state where the front and top surfaces of the casing 100 are closed (hereinafter, referred to as a "closed state").

As described above, the door 300 is rotated centering on the rear side of the door top surface portion 310, so that the position of the door can be more rearward in the opened state than in the closed state.

As described above, when the door 300 is disposed in a position relatively biased to the rear in the opened state, the center of gravity of the cooking apparatus may be biased to the rear from the center in the front-rear direction of the cooking apparatus in the state where the door 300 is opened.

That is, a first configuration provided to prevent the cooking appliance from tipping forward when the door 300 is opened is that the door 300 is turned around the rear side of the door top surface portion 310, and therefore the door 300 in the opened state is biased rearward compared to the closed state, and thus when the door 300 is opened, the center of gravity of the cooking appliance is biased rearward from the center in the front-rear direction of the cooking appliance.

On the other hand, when the structure of the door 300 itself is viewed, the door 300 is provided in such a manner that the vertical length of the door front surface portion 350 is shorter than the front-rear length of the door top surface portion 310. That is, when the door 300 is in the closed state, the vertical length of the door front portion 350 is shorter than the front-rear length of the door top portion 310.

Therefore, in the door 300, the proportion of the volume of the door top surface portion 310 is greater than the proportion of the volume of the door front surface portion 350, and thus the proportion of the weight of the door top surface portion 310 is greater than the proportion of the weight of the door front surface portion 350 in the total weight of the door 300.

When the door 300 is rotated in the rear direction to be opened, the center of gravity of the door 300 gradually moves in the rear direction. In the door 300, the door front surface portion 350 is disposed on the front side, and the door top surface portion 310 is disposed on the rear side.

Therefore, among the total weight of the door 300, the greater the weight of the door top surface part 310, the greater the degree to which the center of gravity of the door 300 moves rearward when the door 300 is rotated rearward.

In other words, among the total weight of the door 300, the greater the weight of the door top surface part 310, the more the weight of the door 300 is, the more rapidly the center of gravity of the door 300 can be moved rearward when the door 300 is rotated rearward.

That is, a second configuration provided to prevent the cooking apparatus from tipping forward when the door 300 is opened is that the door 300 is provided in such a manner that the vertical length of the door front surface portion 350 is shorter than the front-rear length of the door top surface portion 310, and therefore, when the door 300 is rotated backward, the center of gravity of the door 300 can be more rapidly moved backward.

On the other hand, the door 300 is provided with the first heater 400 and the transparent window W, and the first heater 400 and the transparent window W are disposed on the door top surface portion 310.

As described above, the see-through window W may include a pair of glasses 330 and 335 (refer to fig. 10). Typically, glass is made of heavier materials. Therefore, when the see-through window W formed of glass is disposed on the door top surface portion 310, the weight of the door top surface portion 310 inevitably increases accordingly.

Further, the see-through window W of the present embodiment may include a pair of glasses 330,335, i.e., two layers of glasses, and accordingly, the weight of the door top surface part 310 is inevitably increased.

As described above, when the transparent window W is disposed on the door top surface portion 310, the weight of the door top surface portion 310 is increased by the weight of the glass forming the transparent window W, among the total weight of the door 300.

Accordingly, when the door 300 is rotated backward, the center of gravity of the door 300 may be more rapidly moved backward as the weight of the door top surface part 310 side increases due to the first heating part 400.

The pair of first heating units 400 is disposed on the bottom surface side of the door top surface portion 310. At this time, the pair of first heating portions 400 are disposed at the front outer side and the rear outer side of the transparent window W, respectively. One of the first heating parts 400 is disposed at a rear side of the door top surface part 310 adjacent to the hinge part 810.

As described above, since the first heating part 400 is disposed on the door top surface part 310, the weight of the door top surface part 310 is further increased by the weight of the first heating part 400 among the total weight of the door 300.

Accordingly, when the door 300 is rotated backward, the center of gravity of the door 300 may be more rapidly moved backward as the weight of the door top surface part 310 side increases due to the first heating part 400.

Further, since the center of gravity of the door 300 is disposed at the first heating part 400 at the rear side of the door top surface part 310 adjacent to the hinge part 810, it can be moved further rearward, and thus, when the door 300 is rotated rearward, the center of gravity of the door 300 can be moved more rapidly rearward.

That is, the third configuration provided to prevent the cooking appliance from tipping forward when the door 300 is opened is that the first heating part 400 and the see-through window W are disposed on the door top surface part 310, whereby the center of gravity of the door 300 can be more rapidly moved backward when the door 300 is rotated backward.

In summary, the door 300 of the present embodiment is provided such that the position of the door 300 can be moved backward when rotated backward, provided in a form in which the vertical length of the door front portion 350 is shorter than the front-rear length of the door top portion 310, and provided in a form in which the first heating part 400 and the transparent window W are disposed on the door top portion 310.

Such a door 300 is provided such that, when the tray 200 is taken out from the front after the cooking chamber 105 is opened, the door 300 itself moves to the rear side of the cooking apparatus, and the center of gravity of the door 300 rapidly moves rearward as the door 300 rotates rearward.

The door 300 provided in this manner acts on the center of gravity of the cooking apparatus when the tray 200 is taken out from the front after the cooking chamber 105 is opened, so that the center is biased to the rear from the center in the front-rear direction, thereby being able to contribute to greatly reducing the risk of the cooking apparatus tipping forward.

On the other hand, the door 300 is rotated about the rear side of the door top surface portion 310 coupled to the hinge portion 810, and most of the load of the door 300 acts on the hinge portion 810 side when the door 300 is in the open state.

Since the hinge 810 is disposed at the rear side of the cooking appliance, when the door 300 is in the open state, most of the load of the door 300 is intensively applied to the rear side of the cooking appliance as a result.

Therefore, when the door 300 is in the opened state, the center of gravity of the cooking apparatus moves to the rear side of the cooking apparatus as most of the load of the door 300 is concentrated on the rear side of the cooking apparatus.

In other words, when the door 300 is in the opened state, the influence of the most load of the door 300 concentrating on the rear side of the cooking apparatus may further bias the center of gravity of the cooking apparatus further to the rear side, in addition to the influence caused by the position change of the door 300 itself and the change of the center of gravity of the door 300 itself.

That is, a fourth configuration provided to prevent the cooking appliance from tipping forward when the door 300 is opened is that a coupling point between the door 300 and the hinge portion 810 is disposed at the rear side of the cooking appliance, so that the influence of the majority of the load of the door 300 concentrating at the rear side of the cooking appliance can be further exerted.

In addition, when the door 300 is in the opened state, a Moment (Moment) is applied to the cooking appliance centering on a coupling portion of the door 300 and the hinge part 810, and the Moment acts as a force to rotate the cooking appliance forward. That is, the greater the moment, the greater the force that rotates the cooking apparatus forward, and therefore the higher the risk of the cooking apparatus tipping over.

In addition, when the door 300 is in the opened state, the tray 200 is taken out from the front, and a moment generated when the tray 200 is taken out in this way is applied to the cooking appliance, and the moment also acts as a force to rotate the cooking appliance forward.

Therefore, a force that adds the moment acting on the door 300 side and the moment acting on the tray 200 side may act as a force that further increases the risk of the cooking apparatus tipping over.

The amount of moment acting on one side of the door 300 may be determined by the force acting on the door 300 and the distance between the position where the force acts and the rotation axis (the coupling portion of the door and the hinge portion). At this time, unless a force is otherwise applied, only gravity may be considered to act on the door 300, and since gravity acts on the entire portion of the door 300, gravity may be considered to act on the center of gravity of the door 300. Therefore, it can be considered that the moment is larger the farther the center of gravity of the door 300 is from the coupled portion of the door 300 and the hinge portion 810, and the moment is smaller the closer the center of gravity of the door 300 is to the coupled portion of the door 300 and the hinge portion 810.

According to the present embodiment, as the door 300 is rotated backward to open the cooking chamber 105, the center of gravity of the door 300 is also moved backward, and thus, the magnitude of the moment acting on one side of the door 300 can also be reduced together.

That is, when the door 300 is in the opened state, the moment on the side of the tray 200 increases as the tray 200 is taken out from the front, but the moment on the side of the door 300 may be relatively reduced.

Therefore, in the cooking apparatus of the present embodiment, the magnitude of the moment acting on the cooking apparatus through the door 300 when the door 300 is opened can be reduced, so that the risk of the cooking apparatus tipping over due to the tray 200 being taken out from the front can be greatly reduced.

That is, the fifth configuration provided to prevent the cooking appliance from tipping forward when the door 300 is opened is such that the center of gravity of the door 300 is offset rearward so as to reduce the magnitude of the moment acting on the cooking appliance due to the door 300.

On the other hand, as described above, the seating protrusion 820 may protrude toward the inside of the cooking chamber 105 through the first slot 835 formed on the hinge housing 830 and the second slot 125 formed in the longitudinal direction of the housing 100.

The first slot 835 and the second slot 125 may provide a passage for protruding the seating protrusion 820 connected with the conversion output part 840 inside the hinge housing 830 to the inside of the cooking chamber 105, and in addition, may provide a passage required for the seating protrusion 820 to move back and forth.

For this, the first and second slots 835 and 125 are formed to penetrate the hinge housing 830 and the side 120 of the housing 100, respectively, and may be formed in a slot shape having a width in the up-down direction and a length extending back and forth corresponding to the thickness of the seating protrusion 820.

Preferably, the front-to-back lengths of the first and second slots 835 and 125 may be less than 1/2 of the front-to-back length of the tray 200.

The length of the first slot 835 and the second slot 125 is related to the removal range of the tray 200. That is, the range in which the tray 200 can be taken out depends on the degree to which the seating protrusion 820 moves forward, and the range in which the seating protrusion 820 moves forward is limited by the first slot 835 and the second slot 125, and as a result, it can be considered that the taking-out range of the tray 200 can be determined by the first slot 835 and the second slot 125.

Therefore, when the front-to-rear length of the first slot 835 and the second slot 125 is less than 1/2 of the front-to-rear length of the tray 200, the movable distance of the tray 200 is also limited to 1/2 which is less than the front-to-rear length of the tray 200.

Therefore, when it is considered that the tray 200 is completely inserted into the inside of the cooking chamber 105 in a state where the seating protrusion 820 is located at the rearmost end of the first and second slots 835 and 125, if the seating protrusion 820 is located at the foremost end of the first and second slots 835 and 125, the tray 200 may be taken out of the cooking chamber 105 by a length of 1/2 smaller than the length of the tray 200 in the length direction.

This is designed to allow the center of gravity of the tray 200 to be positioned inside the cooking chamber 105 even when the tray 200 is removed. That is, in consideration of excessive removal of the tray 200, accordingly, the risk of the tray 200 tipping forward increases, thus allowing the center of gravity of the tray 200 to remain inside the cooking chamber 105 when the tray 200 is removed. In addition, when the tray 200 is excessively pulled out to tilt the center of gravity of the cooking apparatus forward, accordingly, the magnitude of the moment acting on the cooking apparatus becomes large, thereby increasing the risk of the cooking apparatus itself tipping forward.

In view of these aspects, in the present embodiment, the tray 200 is made to be removable only to the outside of the cooking chamber 105 by a length of 1/2 that is less than the length of the tray 200 in the lengthwise direction, so that when the door 300 is opened, the tray 200 is automatically pulled out, making it easier and convenient to remove the food or the tray 200, and also providing an effect of reducing the risk of the tray 200 and the cooking apparatus falling over.

In the case of the conventional cooking apparatus in which the door opens only the front of the cooking chamber, as described above, if the tray 200 takes out 1/2 smaller than the length of the tray 200 in the length direction to the outside of the cooking chamber 105, various inconveniences are caused.

That is, since the tray 200 is not completely exposed to the outside of the cooking chamber, it is difficult to accurately confirm the cooking state of the food placed on the tray 200, and there is an inconvenience in placing the food on the tray 200 or taking out the food placed on the tray 200.

In contrast, in the cooking apparatus of the present embodiment, when the door 300 is opened, not only the front surface of the cooking chamber 105 but also the top surface is opened together, so as described above, even if the tray 200 is pulled out of the cooking chamber by a length of 1/2 that is smaller than the length of the tray 200 in the lengthwise direction, the tray 200 can be exposed to the outside of the cooking chamber 105.

Therefore, as described above, even if the tray 200 is pulled out of the cooking chamber by a length of 1/2 that is less than the length of the tray 200 in the longitudinal direction, the entire cooking state of the food placed on the tray 200 can be easily confirmed, and therefore, as described above, even if the tray 200 is pulled out of the cooking chamber by a length of 1/2 that is less than the length of the tray 200 in the longitudinal direction, the entire cooking state of the food placed on the tray 200 can be easily confirmed, and it is also possible to easily and quickly place the food on the tray 200 or take out the food placed on the tray 200.

That is, the sixth configuration provided to prevent the cooking appliance from tipping forward when the door 300 is opened is to take out only 1/2 less than the length of the tray 200 in the longitudinal direction when taking out the tray 200 to the outside of the cooking chamber 105, thereby reducing the risk of the cooking appliance tipping and making it possible to expose the entire tray 200 to the outside.

Steam generating structure of tray

FIG. 24 is an exploded perspective view showing a part of the structure of the tray shown in FIG. 11, and FIG. 25 is a sectional view taken along line "XXV-XXV" of FIG. 11.

Referring to fig. 3, 24, and 25, a water receiving groove 220 may be formed in the tray 200. The water receiving tub 220 may be disposed in at least one of four sides of the tray 200. In the present embodiment, the water receiving tank 220 is disposed on the side surface of the front of the tray main body 205. Such a water receiving groove 220 may be formed in a groove shape recessed from the upper end of the side of the tray 200 toward the lower portion.

Water may be contained in the water receiving tank 220, and as described above, the water contained in the water receiving tank 220 can be provided as steam that evaporates to act on the inside of the cooking chamber 105 when the inside of the cooking chamber 105 or the tray 200 is heated.

In addition, the tray 200 may further include a steam cover 230. The steam cover 230 is provided to cover the water receiving tub 220 from the upper portion, and may include a cover main body portion 231 and a water inlet guide surface 235.

The cover body portion 231 may cover the water receiving tub 220 from above and may be detachably coupled to the tray 200. A plurality of steam holes 233 may be disposed in the cap body 231. Each steam hole 233 is formed to penetrate the cap main body 231 in the up-down direction. With each of the steam holes 233 formed in the above-described manner, a passage for connecting the inside of the water receiving tub 220 covered by the steam cover 230 and the cooking chamber 105 to each other may be formed on the steam cover 230.

According to the present embodiment, the water receiving tub 220 and the steam cover 230 are disposed in front of the tray 200 and extend in the left-right direction. The plurality of steam holes 233 are disposed in the cover body 231 of the steam cover 230 and spaced apart from each other at predetermined intervals in the left-right direction. That is, steam holes 233 are provided so as to be uniformly arranged in the left-right direction inside cooking chamber 105.

The water inlet guide surface 233 is formed on the cover main body 231 and is formed to be recessed in the vertical direction. In the water inlet guide surface 233, the water inlet hole 237 is formed vertically penetrating the water inlet guide surface 233.

The water inlet hole 237 forms a passage on the steam cover 230, which connects the upper surface of the steam cover 230 and the water receiving tub 220 to each other. The water inlet guide surface 233 guides the flow of water so that the water supplied through the upper surface of the steam cover 230 is guided to the side of the water inlet hole 237.

Preferably, the water inlet hole 233 may be disposed at a central portion side in the left-right direction of the water inlet guide surface 233, and the water inlet guide surface 233 connects the cover main body 231 and the water inlet hole 237 obliquely. Therefore, the water supplied to the water inlet guide surface 233 can flow toward the water inlet hole 237 side by the inclined surface formed by the water inlet guide surface 233, and then be supplied to the inside of the water receiving tub 220 through the water inlet hole 237.

As described above, the water supplied to the inside of the water receiving tank 220 may be used as water supplied into the cooking apparatus for generating steam.

For example, in a state where water is received in the water receiving tank 220 and the tray 200 is inserted into the inside of the cooking chamber 105, when the cooking apparatus starts to operate, the tray 200 is heated by operating at least one of the first and second heating parts 400 and 600.

Thus, when the tray 200 is heated, the water contained in the water receiving tub 220 is heated, thereby generating steam. The steam generated inside the water receiving tub 220 may pass through the steam cover 230 through the steam holes 233 to flow into the inside of the cooking chamber 105. At this time, since the water receiving tub 220 is formed to extend in the left-right direction and the plurality of steam holes 233 are also provided to be uniformly arranged in the left-right direction inside the cooking chamber 105, the steam can be uniformly spread into the inside of the cooking chamber 105. In addition, the steam may be discharged through the water inlet hole 237 disposed at the center portion of the steam cover 230 in the left-right direction.

As described above, the steam may be uniformly distributed inside the cooking chamber 105 without being concentrated into a certain portion of the cooking chamber 105, so that the steam may be uniformly supplied to the entire food to be cooked. Thus, the cooking apparatus of the present embodiment can uniformly supply steam to the inside of the cooking chamber 105, and thus can provide a cooking function capable of effectively maintaining moisture inside food.

In addition, since the steam cover 230 and the tray 200 are detachably provided, the inside of the water receiving tub 220 can be easily cleaned, and only the steam cover 230 can be easily and quickly replaced when necessary, so that it is possible to provide a cooking apparatus that is easy to maintain sanitation and maintenance.

(Structure of second heating Unit, receiving coil, and second control substrate)

Fig. 26 is an exploded perspective view illustrating a housing and a second heating part separately according to an embodiment of the present invention, and fig. 27 is a plan view illustrating the second heating part illustrated in fig. 26. Fig. 28 is an exploded perspective view showing the second heating unit, the receiving coil, and the electromagnetic shield plate shown in fig. 26, fig. 29 is a sectional view showing a state of connection among the second heating unit, the temperature sensor, the receiving coil, and the electromagnetic shield plate shown in fig. 26, and fig. 30 is a rear view showing the second control substrate shown in fig. 26.

Referring to fig. 3, 26, and 27, the second heating part 600 is disposed at a lower portion of the tray 200. The second heating part 600 is provided at a lower portion of the bottom surface 110 of the case 100, and is provided in the form of a heating part, such as an induction heating part, that heats the tray 200 using a different heating manner from the first heating part 400. The inductive heating part may be provided in the form of including a work coil 610 disposed at a lower portion of the bottom surface 110 of the case 100, and may inductively heat the tray 200 from a lower portion of the tray 200.

The work coil 610 includes a coil mounting base 611. In the present embodiment, the coil mounting base 611 is illustrated as a square shape that is formed in a shape close to the tray 200. This is a result designed to enable the entire area of the tray 200 to be heated using the work coil 610 so that the size and shape of the work coil 610 approaches the shape of the tray 200.

As shown in fig. 28 and 29, the coil mounting base 611 has a spiral groove in which the coil 613 can be provided with reference to the center thereof, and the coil 613 is accommodated in the spiral groove and tightly wound and fixed on the upper portion of the coil mounting base 611. An end of the coil 613 is provided with a coil connection wiring 615 connected to a coil control PCB for controlling the coil 613.

In addition, the second heating part 600 may further include a receiving coil 620. The receiving coil 620 is provided to receive power transmitted wirelessly, and is disposed below the second heating unit 600. Further, a base 180 is disposed below the receiving coil 620. The base 180 is coupled to a lower portion of the bottom surface 110 of the case 100 to support the work coil 610 and the receiving coil 620, etc. from a lower portion of the receiving coil 620 and to form a bottom surface appearance of the cooking apparatus.

Similar to the work coil 610, the receiving coil 620 may include a coil mounting base 621 and a coil 623. Unlike the coil mounting base 611 of the work coil 610, the coil mounting base 621 of the reception coil 620 is formed in a substantially circular shape. This is designed to form the shape of the receiving coil 620 to be close to the shape of the work coil of the induction heating unit provided on the Cooktop (Cooktop).

According to the present embodiment, the receiving coil 620 is provided to be able to receive power from another cooking apparatus (i.e., an inductive heating portion of a cooktop) provided separately from the cooking apparatus of the present embodiment.

For example, the cooking apparatus of the present embodiment may be used in a state where it is placed on a cooktop, in which case power required to operate the cooking apparatus may be received from an inductive heating portion of the cooktop.

As an example, when the working coil of the cooktop and the cooking apparatus of the present embodiment are simultaneously activated in a state in which the cooking apparatus of the present embodiment is placed on the cooktop, the power supplied through the cooktop may be transmitted to the receiving coil 620.

At this time, current is guided to the side of the receiving coil 620 by a magnetic field that varies in the work coil of the cooktop due to an electromagnetic induction phenomenon, so that power supplied through the cooktop can be transmitted to the receiving coil 620. In this process, in order to improve the power receiving efficiency of the receiving coil 620, it is preferable that the cooking apparatus of the present embodiment is placed on the cooktop, and the position of the receiving coil 620 and the position of the work coil of the induction heating part provided to the cooktop are placed in an overlapped manner.

In addition, the inductive heating portion may further include an electromagnetic shield plate 630 disposed between the work coil 610 and the receiving coil 620. The electromagnetic shield 630 may be provided in the form of a metal plate. Such an electromagnetic shield plate 630 is disposed between the work coil 610 and the receiving coil 620, and functions to minimize the influence of EMI generated by the work coil 610 on the receiving coil 620 or to minimize the influence of EMI generated by the receiving coil 620 on the work coil 610.

The cooking apparatus of the present embodiment including the receiving coil 620 as described above may be operated by receiving wireless power from the inductive heating portion of the cooktop. The cooking apparatus can provide a simple and neat appearance without providing a cluttered power cable, and can be operated by receiving wireless power only by placing the cooking apparatus on a cooktop, so that user satisfaction can be further improved.

As shown in fig. 26, 27, and 30, the receiving coil 620 may be electrically connected to the second control substrate 700 disposed behind the operating coil 610 and the receiving coil 620. The power wirelessly transmitted from the work coil of the cooktop to the receiving coil 620 is transmitted to the second control substrate 700 side electrically connected to the receiving coil 620.

According to the present embodiment, the inner space of the lower portion of the bottom surface 110 of the case 100 and the inner space of the rear side of the rear surface 140 of the case 100 are connected to each other. The work coil 610 disposed in the inductive heating portion below the bottom surface 110 of the housing 100 and the second control substrate 700 disposed behind the rear surface 140 of the housing 100 may be electrically connected to each other by a cable connecting the work coil 610 and the second control substrate 700 to each other through an internal space below the bottom surface 110 of the housing 100 and an internal space behind the rear surface 140 of the housing 100 connected to each other.

A power supply processing section that supplies power necessary for operation to an inductive heating section such as the second heating section 600 is provided in the second control substrate 700. The power supply processing portion is connected with the receiving coil 620 to receive power from the receiving coil 620, and processes the supplied power in a form suitable for use in the second heating portion 600 or the like. Such a power supply processing part may include a noise filter PCB710, and a coil control PCB720 for controlling the operation of the work coil 610 may be further provided in the second control substrate 700.

The function of the noise filter PCB710 is to remove noise from the power supplied to the work coil 610, and the control coil PCB720 controls the operation of the work coil 610. In the coil control PCB720, a chip (for example, a chip such as the IGBT 725) for controlling the operation of the work coil 610 may be mounted.

The IGBT725 is a high heat-generating chip requiring temperature management, and when the IGBT725 excessively rises in temperature above a predetermined temperature, the operating coil 610 cannot be controlled.

In view of this, the second control substrate 700 is provided therein with a second cooling fan 730. The second cooling fan 730 may be a sirocco fan (sirocco fan) that sucks air from the outside space of the case 100 and discharges the sucked air to the IGBT725 side.

The second cooling fan 730 may be disposed on the side of the IGBT725, and may suck air from the rear side of the case 100 and discharge the sucked air to the side toward the IGBT 725.

The air flowed into the space portion of the rear side of the rear surface of the case 100 by the second cooling fan 730 first contacts the IGBT725 and the heat sink 726 for cooling the IGBT725 to cool them, and may be discharged to the outside after cooling the noise filter PCB710 portion.

In addition, as shown in fig. 26 to 29, the second heating part 700 of the present embodiment may further include a temperature measuring module 640. A temperature measuring module 640 is provided to measure the temperature of the tray or the temperature inside the cooking chamber 105 in which the tray is disposed.

The temperature measurement module 640 may be configured to be located at a central portion of the work coil 610. Specifically, the temperature measurement module 640 may be disposed on a portion of the coil mounting base 611 where the coil 613 is not disposed, for example, may be disposed in a central portion of the coil mounting base 611.

Such a temperature measurement module 640 may be clip-coupled to the work coil 610 through a through-hole formed at a central portion of the coil mounting base 611. Also, the temperature measuring module 640 provided as described above may include a temperature sensor such as a Thermistor (Thermistor), etc., and may be disposed at a lower portion of the bottom surface 110 of the case 100 to measure the temperature of the tray or the temperature inside the cooking chamber 105 where the tray is disposed.

(arrangement relationship of hinge assembly, second heating part, second control substrate, perspective window, first heating part, input part and first control substrate)

Referring to fig. 3, 26 to 30, the hinge assembly 800, the second heating part 600, and the second control substrate 700 are disposed in the housing 100.

A cooking chamber 105 is formed inside the case 100, and a tray 200 is removably provided to the cooking chamber 105. A second heating unit 600 for heating the tray 200 is disposed at a lower portion of the casing 100. And, hinge assemblies 800 are respectively disposed at both sides of the housing 100, and the hinge assemblies 800 rotatably support the door 300.

The hinge assembly 800 is disposed at both sides of the housing 100 to stably support the door 300 at both sides of the door 300. The hinge assembly 800 is coupled to the tray 200 so as to be able to move the tray 200 forward and backward, and the hinge assembly 800 is coupled to the tray 200 so as to be coupled to the door 300, and the hinge assembly 800 is disposed at both sides of the housing 100.

That is, the hinge assembly 800 should be disposed at both sides of the case 100 to achieve coupling with the tray 200, so that the door 300 can be stably supported and the tray 200 can be moved forward and backward.

In addition, since the top and front surfaces of the housing 100 are opened and the second heating part 600 is provided at the lower portion of the housing 100, the hinge assembly 800 can be disposed only at the rear side or both sides of the housing 100. The arrangement of the hinge assembly 800 on both sides of the housing 100 is advantageous for the reasons described above in many respects.

The receiving coil 620 is disposed at a lower portion of the case 100, and more specifically, at a lower portion of the second heating unit 600. The receiving coil 620 should be disposed at a position closest to a work coil that is a wireless power transmission target (e.g., a cooktop), and thus the disposed position of the receiving coil 620 should be at a lower portion of the case 100.

As described above, when the receiving coil 620 is disposed at the lower portion of the case 100 together with the working coil 610 of the second heating part 600, EMI of the working coil 610 or the receiving coil 620 may affect each other. In view of these aspects, an electromagnetic shield 630 may be disposed between the work coil 610 and the receiving coil 620.

The second control board 700 is preferably disposed adjacent to the receiving coil 620 and the operating coil 610 as a configuration closely related to power reception by the receiving coil 620 and operation of the operating coil 610.

Since the second heater 600 and the receiving coil 620 are disposed at the lower portion of the housing 100 and the hinge assemblies 800 are disposed at both sides of the housing 100, it is considered that the position where the second control substrate 700 is most suitably disposed is the rear.

In view of these points, the second control substrate 700 is disposed in a space behind the rear surface 140 of the housing 100. The second control board 700 provided as described above can be arranged in a position very close to the work coil 610 and the receiving coil 620, and therefore, the wiring connecting the second control board 700 to the work coil 610 and the receiving coil 620 can be simply configured.

In addition, as described above, the second control substrate 700 disposed at the rear of the housing 100 is also positioned close to each hinge assembly 800. Accordingly, when the wirings connecting the respective components disposed in the door 300 and the second control substrate 700 are configured, the respective wirings can be easily hidden inside the hinge assembly 800, and thus there is an advantage that the wirings can be neatly and simply configured without exposing the wirings to the outside.

As described above, the second heating part 600 and the receiving coil 620 are disposed at the lower portion of the housing 100, the hinge assembly 800 is disposed at both sides of the housing 100, and the second control substrate 700 is disposed at the rear side of the housing 100. These configurations are more suitable for the configuration of the housing 100 than the configuration of the door 300, and each configuration can exhibit an optimum function, has high structural stability, can configure neat and simple wiring, and can be disposed at an optimum position where interference between the configurations can be effectively avoided.

On the other hand, referring to fig. 3 and 5, the door 300 is provided with a transparent window W, a first heating part 400, an input part 360, and a first control substrate 500. These components are more suitable for being disposed on the door 300 than the case 100 for functional reasons. In consideration of the fact that some different components are already arranged in the housing 100 and it is more difficult to arrange other components, the arrangement positions of these components are more suitable for the door 300 side than the housing 100.

The transparent window W is disposed at an upper portion of the cooking apparatus. The mini oven is generally used at a position lower than the user's sight line, and thus, in consideration of the characteristics of the cooking appliance provided in the above form, it is preferable to dispose the see-through window W at an upper portion of the cooking appliance than to dispose the see-through window W at the front of the cooking appliance.

The transparent window W is disposed on an upper surface of the door 300, more specifically, on the door top surface 310. In this case, the larger the size of the see-through window W is, the more advantageous it is to ensure the visual field inside the cooking chamber 105, but the size of the see-through window W is preferably limited to a size that can ensure a space necessary for providing the first heating unit 400 and the cable installation parts 340 and 345 in the door top surface part 310.

The first heater 400 is disposed on the door top surface portion 310 in the same manner as the transparent window W. This is designed to dispose the first heating unit 400 at an upper portion facing the second heating unit 600 with the tray 200 interposed therebetween. That is, the first heating part 400 is disposed on the door top surface part 310 so as to be disposed above the tray 200.

As described above, the first heating section 400 provided in the door top surface section 310 together with the transparent window W should be disposed at a position not exposed through the transparent window W when viewed from above. If the first heating part 400 is disposed in the region exposed through the transparent window W, not only the appearance is not good, but also a problem may occur in securing the view through the transparent window W, and a problem of a temperature increase of a portion of the transparent window W may also occur.

Further, since the shape of the door front portion 350 is a quadrangle in which the length in the left-right direction is longer than the length in the front-rear direction, the length of the first heating unit 400 can be increased by arranging the first heating unit 400 on the front outer side and the rear outer side of the transparent window W, and the thermal power of the first heating unit 400 can be expected to be improved as the length of the first heating unit 400 is increased.

In view of these points, the first heating part 400 is disposed at the front outer side and the rear outer side of the see-through window W, respectively, thereby contributing to ensuring functional advantages such as maintaining the beauty, securing the field of vision, suppressing the temperature rise of the see-through window W, and increasing the thermal power of the first heating part 400.

As described above, since the transparent window W and the first heating part 400 are disposed on the door top surface part 310, most of the area of the door top surface part 310 is occupied by the transparent window W and the first heating part 400. The input unit 360 and the first control board 500 are disposed on the door front 350 instead of the door top 310.

In consideration of a state where most of the area of the door top surface portion 310 is occupied by the transparent window W and the first heating portion 400, it is difficult to secure a space for providing the input portion 360 in the door top surface portion 310. Further, if the input part 360 is disposed on the door top surface part 310, there is a risk that an obstacle positioned at an upper part of the cooking appliance collides with the input part 360 to damage the input part 360 in the process of opening the door 300. In particular, if the input part 360 is provided in a form protruding from the door 300, the risk increases.

Further, the temperature of the door top surface portion 310 where the first heating unit 400 is disposed is likely to be higher than that of the door front surface portion 350. In view of the configuration in which the input unit 360 is operated by the hand of the user, when such an input unit 360 is disposed on the door top surface portion 310, the possibility that the user touches a hotter portion in the door top surface portion 310 during the operation of the input unit 360 increases. That is, if the input part 360 is disposed on the door top surface part 310, the risk of user injury (such as burn) may increase during the operation of the input part 360.

In view of these aspects, the input section 360 is disposed on the door front section 350 instead of the door top section 310. Since the input part 360 is disposed at the door front part 350, the user can safely and conveniently adjust the operation of the cooking appliance in front of the cooking appliance.

In addition to the input unit 360, the first control board 500 is also disposed on the door front portion 350. Various elements, circuits, and the like related to the reception of an operation signal input through the input section 360, the generation of a control signal for controlling the operations of the first heating section 400 and the second heating section 600, and the like are provided in the first control substrate 500. Therefore, the first control substrate 500 particularly needs to be electrically connected to the input portion 360.

According to the present embodiment, the first control board 500 is provided on the door front portion 350 in the same manner as the input portion 360, and is disposed in a position very close to the input portion 360. Accordingly, the connection between the input part 360 and the first control substrate 500 can be configured in a form of directly connecting the input part 360 to the first control substrate 500, and thus a very concise and stable connection structure of the input part 360 and the first control substrate 500 can be provided.

Further, since the first control board 500 is provided on the door front surface portion 350, not on the door top surface portion 310 on which the first heating unit 400 as a heat generating component is disposed, the first control board 500 can be disposed at a position that is out of the influence of heat generated by the first heating unit 400 to some extent. Thereby, the influence of heat generated during the operation of the first heating part 400 on the first control substrate 500 may be reduced accordingly, so that the stability and operational reliability of the cooking apparatus may be further improved.

(Structure of door frame)

Fig. 31 is a perspective view illustrating a door frame according to an embodiment of the present invention and respective structures provided to the door frame separately, and fig. 32 is an exploded perspective view illustrating the door frame shown in fig. 31 and respective structures provided to the door frame in an exploded manner. Fig. 33 is an enlarged view showing a part of the door frame shown in fig. 31 and the respective structures provided in the door frame, and fig. 34 is a view showing a state where the first heating unit and the protective grill are removed from the door frame shown in fig. 33.

In fig. 31, 33, and 34, illustration of the glass and the reflector is omitted.

Referring to fig. 31 to 34, the door frame 320 covers a lower portion of the door top surface part 310 and may be combined with the door 300. Such a door frame 320 may support the first heating part 400 and be combined with the door 300. The first heating part 400 coupled to the door frame 320 may be maintained in a state of being disposed at a lower portion of the door 300, more specifically, at a lower portion of the door top surface part 310.

The door frame 320 may include a coupling portion 321 and a heater installation portion 325. The heater installation part 325 is provided in a form protruding from the coupling part 321, and the first heating part 400 may be coupled into such a heater installation part 325.

The coupling portion 321 may be coupled to the door top surface portion 310 to support the heater installation portion 325 at the door top surface portion 310. Such a joint 321 may be provided in the form of a frame of a "mouth" shape having a through hole formed therein.

A seating surface 322 may be formed on an inner side surface of the coupling portion 321 adjacent to the through-hole. The seating surface 322 forms a recessed plane having a height lower than that of the upper surface of the coupling portion 321, and the circumference of each edge of the glass 335 may be seated on the seating surface 322.

As described above, the glass 335 mounted on the mounting surface 322 covers the through hole from above, and may be disposed above the heater mounting part 325 and the first heating part 400 provided to the heater mounting part 325. At this time, the seating surface 322 forms a plane having a height lower than the upper surface of the bonding part 321, and the formed plane may be lower than the bonding part 321 by a height approximately corresponding to the thickness of the glass 335. Thus, the glass 335 can be provided to the door frame 320 in a state of being disposed at a position not protruding upward from the upper portion of the coupling portion 321.

The seating surfaces 322 may be disposed at left and right sides of the through-hole. The placement surface 322 may be disposed on one side or the other side in the front-rear direction of the through hole. In the present embodiment, the placement surfaces 322 are disposed on both the right and left sides and the front side of the through hole. Therefore, the glass 335 is supported around three edges by the seating surface 322 and can be stably seated to the door frame 320.

Further, the left and right installation positions of the glass 335 can be guided by the restriction of the left and right movements thereof by the inner side surfaces of the coupling portions 321 surrounding the installation surface 322, and the glass 335 can be stably installed while suppressing the left and right shaking of the glass 335.

In addition, a restricting rib 323 and a stopper 324 may be further provided in the door frame 320. The restricting rib 323 may be disposed on one side of the through-hole in the front-rear direction, and the stopper 324 may be disposed on the other side of the through-hole in the front-rear direction. In the present embodiment, the restricting rib 323 is disposed behind the through hole, and the stopper 324 is disposed in front of the through hole.

The restriction rib 323 is formed to protrude from the coupling portion 321, and a portion protruding upward from the coupling portion 321 and a portion protruding from the portion in a direction of the through hole may be formed toShape-connected shapes. Such a restriction rib 321 interferes with the rear edge and the upper surface of the glass 335 at the rear of the glass 335, so that the movement of the glass 335 in the backward and upward directions can be restricted.

The stopper 324 may be formed to protrude upward from the combining portion 321. Such a stopper 324 interferes with the front edge of the glass 335 at the front of the glass 335, so that the glass 335 can be restricted from moving forward.

That is, the glass 335 is seated on the seating surface 322 such that the circumference of three edges of the glass 335 is supported by the seating surface 322, the left and right sides of the glass 335 are supported by the inner side surfaces of the coupling portions 321, the forward movement of the glass 335 is restricted by the stoppers 324, and the forward and upward movement of the glass is restricted by the restricting ribs 323, whereby the glass 335 can be stably supported and disposed on the door frame 320.

On the other hand, the first heating part 400 may include a heating body 410, a first connection end 420, and a second connection end 430.

The heating body 410 corresponds to a portion that radiates heat from the first heating part 400 provided in the form of an electric heater. Such a heat-generating body 410 may be formed in a rod shape having a predetermined length.

A first connection end 420 is disposed at one end of the heating element 410 in the longitudinal direction, and a second connection end 430 is disposed at the other end of the heating element 410 on the other side in the longitudinal direction.

At least one of the first connection end 420 and the second connection end 430 includes a cylindrical portion 421 and a key-shaped portion 425. In the present embodiment, it is exemplified that the first connection end 420 and the second connection end 430 each include the cylindrical portion 421 and the key-shaped portion 425.

The cylindrical portion 421 is disposed at an end in the longitudinal direction of the heating element 410. Such a cylindrical portion 421 may be formed in a cylindrical shape in which a circular bottom surface is disposed at the outermost end portion of the first heating portion 410.

The key-shaped portion 425 is disposed between the heat-generating body 410 and the cylindrical portion 421. That is, key-shaped portions 425 are disposed at both ends in the longitudinal direction of the heating element 410, and a cylindrical portion 421 is disposed at the outermost side in the longitudinal direction.

The key shape portion 425 may be formed in a flat hexahedral shape having a thickness thinner than the diameter of the cylindrical portion 421 and a width longer than the diameter of the cylindrical portion 421. For example, a pair of quadrangular surfaces 426 (hereinafter, referred to as "first surfaces") parallel to the width direction of the key shapes 425 may be arranged to be spaced apart in the thickness direction of the key shapes 425 to constitute the top and bottom surfaces of the key shapes 425. In addition, two pairs of quadrangular surfaces 427 (hereinafter, referred to as "second surfaces") parallel to the thickness of the key shapes 425 may be arranged between the pair of first surfaces 426 to constitute four side surfaces of the key shapes 425.

At this time, the first face 426 may be formed as a quadrangular surface having sides longer than the diameter of the cylindrical portion 421, and the second face 427 may be formed as a quadrangular surface having sides longer than the diameter end of the cylindrical portion 421.

Therefore, when the first connection end 420 or the second connection end 430 is viewed in the length direction of the first heating portion 410, in most regions, the cylindrical portion 421 protrudes further to the outside in the diameter direction of the cylindrical portion 421 than the key shape portion 425, and only in a part of regions, the key shape portion 425 may protrude further to the outside in the diameter direction of the cylindrical portion 421 than the cylindrical portion a.

The heater installation part 325 is provided to fix the first connection end 420 and the second connection end 430 which are provided in the above-described manner. Such a heater installation part 325 may include a first link end fixing part 326 for fixing the first link end 420 and a second link end fixing part 327 for fixing the second link end 430.

At least one of the first and second connection terminal fixing parts 326 and 327 may include a cover a and a support wall b. In the present embodiment, it is exemplified that the first connection end fixing portion 326 and the second connection end fixing portion 327 each include the cover a and the support wall b as well.

The cover a is provided so as to surround the periphery of the connection end from the outside in the circumferential direction. Such a cover a may be formed in a curved shape surrounding the lower portion and one side of the connection end, and may have a length corresponding to the length of the connection end or slightly longer than the length of the connection end.

In addition, the heater installation part 325 may further include a shielding plate 328. The shielding plate 328 is disposed on a side farther from a central portion of the cooking chamber in the front-rear direction than the first heating part 400, and connects the first connection end fixing part 326 and the second connection end fixing part 327. Such a shielding plate 328 may be formed in a plate shape having a length extending in a longitudinal direction of the first heating part 400.

According to the present embodiment, the first and second connection end fixing portions 326 and 327 are respectively disposed at both end portions in the longitudinal direction of the first heating part 400. Further, the shielding plate 328 is disposed on a side farther from the central portion in the front-rear direction of the cooking chamber than the first heating part 400, among the front side and the rear side of the first heating part 400.

Further, the hood a is disposed on a side closer to a central portion in the front-rear direction of the cooking chamber than the first heating part 400, from among the front side and the rear side of the first heating part 400. The cover a may surround the connection end from a side closer to a central portion of the cooking chamber in a front-rear direction than the first heating part 400 and a lower portion of the first heating part 400.

The lower side of cover a is connected to shield plate 328, so that a space surrounded by cover a and shield plate 328 connected in a "U" shape is formed around the connection end.

As described above, the support wall b may be disposed in the space surrounded by the cover a and the shield plate 328. Such a support wall b may be formed in a shape protruding from the cover a and the shield plate 328 toward the space. The support wall b formed in the above-described manner may divide the space surrounded by the cover a and the shielding plate 328 into an inner space and an outer space in the length direction of the first heating part 400. Also, the connection end may be clip-bonded to such a support wall b.

A coupling hole c and a through hole d may be formed at the support wall b.

The coupling hole c is formed to penetrate the support wall b, and may be formed to penetrate in a shape (e.g., a circular shape) corresponding to the outer circumferential surface shape of the cylindrical portion a. The cylindrical portion a sandwiches such a coupling hole c, so that the connection end can be sandwichingly coupled to the support wall b.

The through hole d is formed to penetrate the support wall b, and may be formed in a form cut from an upper side end of the support wall b to the coupling hole c. Such a through hole d is formed to penetrate the support wall b with a width corresponding to the length of the short side of the key shape part 425, thereby forming a passage connecting the outside of the support wall b and the coupling hole c to each other.

The through-holes d may be formed in a width corresponding to the length of the short sides of the key shapes 425, in other words, in a width corresponding to the thickness of the key shapes 425.

Any one of the first and second link ends 420 and 430 may be inserted into the coupling hole c through the through hole d in a state where the first heating part 400 is in the first posture. Here, the first posture is defined as a posture in which the surface (i.e., the second surface 427) of the first heating part 400 parallel to the thickness direction of the key-shaped part 425 is arranged parallel to the width direction of the through hole d (see fig. 36)

In addition, an extension hole e may be formed in the support wall b. The extension hole e is formed to penetrate the support wall b similarly to the through hole d, and may be formed in a shape in which the through hole d formed at an upper portion of the coupling hole c extends to a lower portion of the coupling hole c through the coupling hole c.

When the connection end is in the first posture, the key shape portion 425 protrudes further upward and downward than the cylindrical portion 421. In addition, when the connection end is in the first posture, the cylindrical portion 421 must be located at the same height as the coupling hole c in order to be in a state of being able to be inserted into the coupling hole c. However, in order for the cylindrical portion 421 and the coupling hole c to be located at the same height, the lower protruding portion of the key shape portion 425 must be located at a lower position than the coupling hole c.

For this, an extended hole e is formed at a lower portion of the coupling hole c, and a lower protruding portion of the key shape portion 425 may be inserted into such an extended hole e. That is, the extension hole e may provide a passage enabling the lower protrusion part inserted into the key shape part 425 of the coupling hole c in the first posture to pass downward through the coupling hole c.

Additionally, the connection end may further include an extension 422. The extended portion 422 may be formed by extending the cylindrical portion 421 to the key shape portion 425 side. Such an extension 422 is formed to protrude outward from the first face 426 of the key shape portion 425 in the thickness direction of the key shape portion 425 to form a step 423 between the extension 422 and a surface (i.e., the first face 426) parallel to the width direction of the key shape portion 425. According to the extending portion 422 formed in the above-described manner, in a part of the key shape portion 425 adjacent to the cylindrical portion 421, an area where the extending portion 422 and the key shape portion 425 overlap is formed.

In this region, it is shown a shape that the extending portion 422 protrudes further in the thickness direction of the key shape portion 425 than the first face 426 of the key shape portion 425, and the second face 427 of the key shape portion 425 protrudes further in the width direction of the key shape portion 425 than the extending portion 422.

The strength of the joint portion between the cylindrical portion 421 and the key shape portion 425 can be further enhanced by forming the extension portion 422 in the above-described manner. If the extension 422 is not present, the junction between the cylindrical portion 421 and the key shape portion 425 is defined only by the lateral end of the key shape portion 425. However, since the extended portion 422 is formed at the connecting end, the joint portion between the cylindrical portion 421 and the key shape portion 425 can be expanded to the overlapping position of the extended portion 422 and the key shape portion 425, and therefore, the strength of the joint portion between the cylindrical portion 421 and the key shape portion 425 can be further enhanced.

In addition, the step 423 formed due to the extension 422 may serve to guide the position where the key shape portion 425 is inserted into the through hole d when the connection end and the support wall b are engaged in the sandwiching. The detailed description thereof will be described later.

On the other hand, each of the first and second connection end fixing parts 326 and 327 may further include an outer wall f. The outer walls f are respectively disposed outside the support walls b in the longitudinal direction of the heating element 410, and may be respectively connected to the inner side surfaces of the coupling portions 321. Such an outer wall f forms the outermost walls of the first and second connection end fixing parts 326 and 327 in the longitudinal direction of the heating element 410.

The first and second connection end fixing portions 326 and 327 each have a space surrounded by the cover a, the support wall b, the outer wall f, and the shielding plate 328 formed therein. The space is a space whose side portions are surrounded by the cover a, the support wall b, the outer wall f, and the shielding plate 328 and whose lower portion is surrounded by the cover a, and at least a part of the cylindrical portion 421 fixed to the fixed end of the first connection end fixing portion 326 or the second connection end fixing portion 327 is inserted into such a space.

In the space, the cylindrical portion 421 may be connected with a cable. The cable connected to the cylindrical portion 421 may be a signal cable that transmits a control signal generated from the first control substrate 500 (see fig. 7) to the first heating section 400, may be a power cable that supplies power to the first heating section 400, or may be both of the signal cable and the power cable.

As shown in fig. 7, the signal cable and the power cable may be provided in cable mounting parts 340,345 provided in the door top face part 310. The coupling between the door top surface 310 and the door frame 320 forms a state in which the coupling portion 321 covers the portion where the cable attachment portions 340 and 345 are disposed.

The plurality of coupling protrusions 341, 346 are disposed in the cable attachment portions 340,345, and the plurality of coupling holes 320a are disposed in the door frame 320 so as to correspond to the coupling protrusions 341, 346. After the positions of the door top surface portion 310 and the door frame 320 are matched so that the positions of the coupling hole 320a and the coupling protrusions 341 and 346 are matched, the portions where the coupling hole 320a and the coupling protrusions 341 and 346 are formed are coupled by the coupling member, whereby the coupling between the door top surface portion 310 and the door frame 320 can be configured. At this time, the portions where the cable attachment portions 340 and 345 are disposed are covered with the coupling portion 321.

The glasses 330 and 335 do not cover the portions where the cable attachment portions 340 and 345 are disposed, but the first heating unit 400 and the heater attachment portion 325 are disposed at the lower portion of the region covered with the glass 335. Therefore, in order to connect the cables provided to the cable mounting parts 340,345 to the connection terminals, as shown in fig. 32 to 35, it is necessary to form a passage between the region of the coupling part 321 not covered with the glass 335 and the region of the heater mounting part 325 covered with the glass 335.

In view of these points, in the present embodiment, the groove g is provided at the connecting portion of the outer wall f and the joint 321. A groove g is formed at a connection site of the outer wall f and the combining part 321, in which a surface recessed compared to an upper face of the combining part 321 (more specifically, the seating face 322 of the combining part 321) is formed. The groove g formed in the above manner forms a gap allowing a cable to pass through at a lower portion of the glass 335 placed on the seating surface 322, so that a passage allowing the cable to pass through can be formed between the space in which the cylindrical portion a of the connection terminal is accommodated and the cable mounting portions 340 and 345 (refer to fig. 7).

On the other hand, the unnumbered 320b in the drawing is a hole formed through the door frame 320 to form a passage on the door frame 320 through which the hinge portion 810 (refer to fig. 2) passes through the door frame 320.

On the other hand, the cooking apparatus of the present embodiment may further include an emitter 440 and a protective grill 450.

The emitter 440 is provided to reflect heat of the first heating part 400 so that the heat of the first heating part 400 can be concentrated to the tray 200 (refer to fig. 2) side. In the present embodiment, the transmitter 440 may be configured to transmit the signal to the receiverThe shape of the reflecting surface formed parallel to the plane of the shield plate 328 and the reflecting surface formed parallel to the plane of the glass 335 are connected by shape as an example. Such a transmitter 440 may be provided on the door frame 320 by being combined with the shielding plate 328.

The emitter 400 disposed in the above-described manner may be laterally blocked between the first heating part 400 and the shielding plate 328 and between the first heating part 400 and the glass 335 to reflect heat of the first heating part 400, thereby helping to concentrate the heat of the first heating part 400 to the tray 200 side.

The protective grill 450 can transfer heat of the first heating part 400 to the tray 200 side, and is provided in a structure for protecting the first heating part 400. Such a protective grill 450 is disposed to be spaced apart from the shielding plate 328 with the first heating part 400 interposed therebetween.

The protective grating 450 may include a plurality of steel wires 451 and a plurality of fixing members 453. Each of the wires 451 has a length extending in a longitudinal direction of the first heating part 400, and is provided in a length substantially corresponding to the length of the first heating part 400 or a length slightly longer than the length of the first heating part 400.

The plurality of wires 451 are arranged so as to surround the circumference of the first heating section 400 at the outer side in the circumferential direction of the first heating section 400. Such a plurality of steel wires 451 may be arranged at predetermined intervals in the circumferential direction of the first heating section 400.

According to the present embodiment, the circumference of the first heating part 400 is surrounded by the emitter 440 and the protective grill 450. That is, one side of the first heating part 400 in the front-rear direction and the upper part of the heating part 400 are surrounded by the emitter 440, and the remaining direction, that is, the other side of the first heating part 400 in the front-rear direction and the lower part of the heating part 400 are surrounded by the protective grill 450.

Therefore, the plurality of wires 451 are arranged so as to surround the other side of the first heating section 400 in the front-rear direction and the lower portion of the heating section 400 on the outer side in the circumferential direction of the first heating section 400. The fixing member 453 is formed in a shape extending in the arrangement direction of the wires 451. The plurality of fixing members 453 may be disposed at predetermined intervals along the length direction of the wire 451.

The protective grill 450 may be disposed on the door frame 320 by fixing both end portions thereof in a length direction to the first and second connection end fixing portions 326 and 327, respectively.

For this, a grill fixing portion may be provided in each of the first and second connection end fixing portions 326 and 327. The grill fixing part is provided as means for fixing the steel wire 451 of the protection grill 450 to the heater installation part 325, and may include a plurality of fixing ribs h.

The plurality of fixing ribs h are configured to be spaced apart at predetermined intervals along the arrangement direction of the plurality of steel wires 451. And, each fixing rib h is formed to protrude from the cover a toward the first heating part 400. Accordingly, fixing grooves may be formed between each of the fixing ribs h. Preferably, the spaced interval between each fixing rib h is determined such that the fixing groove can be formed to a width corresponding to the thickness of the steel wire 451.

As described above, the sandwiching coupling between the protection grill 450 and the grill fixing portion may be achieved by sandwiching and fixing the steel wire 451 to the respective fixing grooves formed between the plurality of fixing ribs h. Thereby, the protective grill 450 can be simply and rapidly disposed in the door frame 320 only by a simple operation of sandwiching and fixing both side ends of the protective grill 450 to the grill fixing portion formed at each of the first and second connection end fixing portions 326 and 327.

In addition, as described above, a plurality of fixing ribs h formed to protrude from the cover a may be used as a reinforcing structure to increase the strength of the cover a.

Fig. 35 to 39 are views showing a process of providing the first heating unit to the door frame.

Hereinafter, a process in which the first heating part 400 is provided in the door frame 320 will be described with reference to fig. 35 to 39.

Referring to fig. 35, before the first heating part 400 is installed on the door frame 320, a protective grill 450 may be installed. The protective grill 450 may be provided in such a manner that both end portions of the protective grill 450 in the length direction are fixed to the first and second connection end fixing portions 326 and 327, respectively. In this case, the fixing of each end of the protection grill 450 may be configured such that the steel wire 451 sandwiches the fixing grooves formed between the plurality of fixing ribs h to form a sandwiched connection between the protection grill 450 and the grill fixing portion.

When the setting of the protective grill 450 is completed, the setting of the first heating part 400 may be performed. In order to install the first heating unit 400 on the door frame 320, first, the first heating unit 400 is brought into a first posture. At this time, the first and second link ends 420 and 430 are in a state where the pair of first faces 426 face forward and backward, respectively, and the pair of second faces 427 facing each other of the two pairs of second faces 427 face upward and downward.

In this state, as shown in fig. 36, either one of the first link end 420 and the second link end 430 is sandwiched into the support wall b. In the present embodiment, an example is shown in which the first connection terminals 420 are sandwiched in the support walls b provided in the first connection terminal fixing portions 326.

The first connection end 420 needs to be inserted into the through hole d formed in the support wall b in order to sandwich the support wall b. For this reason, the first connection end 420 is inserted into the through hole d in a state where the position of the key shape portion 425 and the position of the through hole d coincide. In this process, the key shape part 425 is inserted into the through hole d through the upper end of the cut support wall b and inserted into the coupling hole c through the through hole d.

At this time, the second connection end 430 remains in a state where the second connection end fixing portion 327 is not sandwiched. That is, even if the first heating part 400 is moved downward in a state where the key-shaped parts 425 of the first connection ends 420 are inserted into the coupling holes c, the second connection ends 430 are not sandwiched by the support wall b and are maintained in a state of being positioned at the right side of the support wall b.

The position of the first connection end 420 in the longitudinal direction thereof for sandwiching the support wall b may be guided to a position where a region between the end of the heat-generating body 410 in the longitudinal direction and the extension 422 (hereinafter, referred to as a "recess region") can overlap the through-hole d. That is, the portion of the first connection end 420 that can pass through the through-hole d is limited to a recessed region in which the recessed region can be clearly distinguished due to the shape characteristics of the recess between the end of the heat-generating body 410 in the length direction and the extension 422.

When the length of the recessed area is about equal to or slightly greater than the thickness of the support wall b, the first link ends 420 are sandwiched into the support wall b of the first link end fixing part 326, and the position of the first heating part 400 can be easily guided so that the second link ends 430 are not sandwiched into the support wall b of the second link end fixing part 327.

For this reason, the gauge L1 between the support wall b of the first link end fixing portion 420 and the support wall b of the second link end fixing portion 430 satisfies the following relationship.

LH＝LH1+2LH2+2LH3

L1＝LH－LH2－LH3

Here, L H is the total length of the first heating part, L H1 is the length of the heating element, L H2 is the distance between one end of the heating element and the step, L H3 is the distance between the step and the outermost end of the cylindrical part, and L H2 is the distance between one end of the heating element and the step and can also be considered as the length of the depressed region.

That is, the distance L1 between the support wall b of the first connection end fixing portion 326 and the support wall b of the second connection end fixing portion 327 is set to a length equal to the length obtained by subtracting one connection end from the one heating element 410 and the pair of connection ends 420 and 430 constituting the first heating unit 400.

If the interval L1 between the supporting wall b of the first connection end fixing portion 326 and the supporting wall b of the second connection end fixing portion 327 is set in the above-described manner, the second connection end 430 will be maintained in a state of not being sandwiched in the supporting wall b of the second connection end fixing portion 327 when the recessed region of the first connection end 420 is inserted into the through-hole d to sandwich the supporting wall b of the first connection end fixing portion 326.

On the other hand, as shown in fig. 37, the depressed area of the key shape portion 425 is inserted into the coupling hole c through the through hole d, and therefore, when the cylindrical portion 421 is located at the same height as the coupling hole c, the lower protruding portion of the key shape portion 425 is sandwiched into the extension hole e, and the first connection end 420 is in a state of being unable to move further downward.

In this state, as shown in fig. 38, the entire first heating part 400 is moved in the longitudinal direction of the first heating part 400, and the heating element 410 is moved in a direction away from the support wall b of the first connection terminal fixing part 326. Accordingly, the key shape portion 425 of the first connection end 420 and the support wall b are separated. That is, the key-shaped portion 425 of the first connection end 420 is separated from the coupling hole c, the through hole d, and the extension hole e, and the cylindrical portion 421 is inserted into the coupling hole c, and constitutes a sandwiching coupling between the cylindrical portion 421 of the first connection end 420 and the support wall b of the first connection end fixing portion 326.

Meanwhile, in the second connection end fixing portion 327, the cylindrical portion 421 of the second connection end 420 is inserted into the coupling hole c, and thus the cylindrical portion 421 of the second connection end 430 and the support wall b of the second connection end fixing portion 327 are coupled by being sandwiched. At this time, the second connection end fixing portion 327 also holds the state in which the key-shaped portion 425 of the second connection end 420 is separated from the support wall b, that is, the state in which the key-shaped portion 425 of the second connection end 420 is not inserted into the coupling hole c, the through hole d, and the extension hole e.

For this reason, the gauge L1 between the support wall b of the first link end fixing portion 420 and the support wall b of the second link end fixing portion 430 satisfies the following relationship.

L1＝LH1+2LH4

Here, L H4 is the length of the key shape 425.

That is, the distance L1 between the support wall b of the first connection end fixing portion 326 and the support wall b of the second connection end fixing portion 327 is set to a length equal to the length including the heating element 410 and the pair of key-shaped portions 425.

If the interval L1 between the supporting wall b of the first connection end fixing portion 326 and the supporting wall b of the second connection end fixing portion 327 is set in the above-described manner, when the cylindrical portion 421 of the first connection end 420 and the cylindrical portion 421 of the second connection end 430 are both sandwiched in the supporting wall b, both the key-shaped portion 425 of the first connection end 420 and the key-shaped portion 425 of the second connection end 430 will remain in a state of not being sandwiched in the supporting wall b.

In this state, as shown in fig. 39, when the posture of the first heating part 400 is changed to the second posture, the setting of the first heating part 400 is completed. Here, the second posture is defined as a posture in which the first heating part 400 is disposed in parallel with the width direction of the through hole d on the first surface 426 of the key-shaped part 425. The second posture of the first heating part 400 may be a state in which the first heating part 400 is rotated by 90 ° about an axis in the longitudinal direction of the first heating part 400 from the state in which the first heating part 400 is in the first posture.

As described above, as the posture of the first heating part 400 is changed, each of the key shape parts 425 disposed at both side end parts of the first heating part 400 is closely attached to the support wall b, and thus the first heating part 400 can be fixed to the heater mounting part 325 in a state where the movement in the longitudinal direction thereof is restricted.

This corresponds to an effect obtained by designing the shapes of the first heating part 400 and the heater mounting part 325 such that the spacing L1 between the supporting wall b of the first connection end fixing part 420 and the supporting wall b of the second connection end fixing part 430 satisfies the relationship of L1 ═ L H1+ 2L H4.

In addition, the spacing L2 between the support wall b and the outer wall f satisfies the following relationship.

L2≥LH3

That is, the spacing L2 between the support wall b and the outer wall f is set to be longer than the length between the step 423 and the outermost end of the cylindrical portion 421.

When the interval L2 between the support wall b and the outer wall f is set in the above-described manner, a space of a length corresponding to the interval L is formed between the support wall b and the outer wall f, the extension 422 and the cylindrical portion 421 are inserted into the space formed between the support wall b and the outer wall f in the above-described manner, and in the space, the connection between the cable and the connection terminal may be established.

As described above, when the setting of the first heating part 400 is completed, the setting of the emitter 440 may be performed. The transmitter 440 arrangement may be implemented in a form such that the transmitter 440 is coupled to the shield 328.

Then, the glass 335 (refer to fig. 31) is seated on the seating surface 332 of the door frame 330 and fixed by the stopper 324 and the restricting rib 323, thereby completing the setting of the glass 335.

The connection work of the connection terminal and the cable may be performed before or after the glass 335 is disposed. When these processes are all completed, a unit body in which the door frame 320, the first heating part 400, the emitter 440, the protective grill 450, and the glass 335 are assembled into one unit may be provided. As described above, if the door frame 320 in which the first heating part 400, the emitter 440, the protective grill 450, and the glass 335 are assembled is coupled to the door top surface part 310 (see fig. 1), the first heating part 400, the emitter 440, the protective grill 450, the glass 335, and the like may be assembled to the door 300 at one time.

Although not shown, when the setting work of the first heating part 400 and the connection work of the connection terminals to the cables are completed, covers may be covered on the upper portions opened in the first and second connection terminal fixing parts 326 and 327 (refer to fig. 31) to protect the connection terminals. In order to accomplish the coupling between the first and second link end fixing parts 326 and 327 and the cover, a coupling protrusion i may be provided at an upper portion of the cover a to protrude therefrom.

The door frame 320 of the present embodiment having the above-described configuration can provide the following effects.

First, the door frame 320 may be coupled to a lower portion of the door top surface part 310 to cover the lower portion of the door top surface part 310 such that the cable installation parts 340 and 345 (refer to fig. 7) disposed inside the door top surface part 310 and the cables provided at the cable installation parts 340 and 345 are not exposed to the outside.

The door frame 320 can be coupled to a lower portion of the door top surface portion 310 by coupling members to the cable attachment portions 340 and 345 and the like in a state where portions where the cable attachment portions 340 and 345 are disposed are covered with the coupling portions 321. As described above, the door frame 320 coupled to the lower portion of the door top surface portion 310 can cover the cable installation portions 340 and 345 (see fig. 7) disposed inside the door top surface portion 310 and the cables provided in the cable installation portions 340 and 345, so that the cable installation portions 340 and 345 and the cables are not exposed to the outside and can be easily separated from the door 300 when necessary. Such a door frame 320 can safely protect various components inside the door top surface part 310 and can be easily separated when needed, and thus, can contribute to that maintenance work of the cooking apparatus can be easily and quickly performed.

Second, the door frame 320 provides a frame that can assemble the first heating part 400, the respective components associated with the first heating part 400, and the glass 335 into a single unit, thereby contributing to more efficient component management and manufacturing management.

In the door frame 320, structures for fixing the first heating part 400, the emitter 440, and the protective grill 450 to the door frame 320 are provided in addition to the structures for fixing the glass 335 to the door frame 320.

Accordingly, one unit for coupling the glass 335, the first heating part 440, the emitter 440, and the protective grill 450 to the door frame 320 may be provided, and the glass 335, the first heating part 440, the emitter 440, and the protective grill 450 may be coupled to the door at one time by coupling the door frame 320 to the lower portion of the door top surface part 310.

Third, the door frame 320 provides a structure that allows the first heating part 400 to be easily and rapidly installed at the door frame 320, and thus, it can contribute to more efficient installation work of the first heating part 400.

According to the present embodiment, first, one side end portion of the first heating part 400 is sandwiched between any one of the first and second connection end fixing portions 326 and 327, and the first heating part 400 is moved in the longitudinal direction thereof to sandwich both side end portions of the first heating part 400 between the first and second connection end fixing portions 326 and 327, respectively, and then, the installation of the first heating part 400 can be completed only by a simple and easy operation of rotating the first heating part 400.

At this time, the first and second connection end fixing portions 326 and 327 are not provided to have directionality, and therefore, even if one end portion of the first heating unit 400 is first sandwiched between one of the first and second connection end fixing portions 326 and 327, the first heating unit 400 can be provided without any trouble.

As described above, the door frame 320 enables the first heating part 400 setting work to be more efficiently performed, and thus it can contribute to easier and faster performing the manufacturing work of the cooking apparatus and the maintenance work performed to replace the first heating part 400.

[ detailed Structure of the casing ]

Fig. 40 is a perspective view showing a case according to an embodiment of the present invention after being separated, fig. 41 is an exploded perspective view showing a constitution of the case shown in fig. 40 after being separated, and fig. 42 is a plan-expanded view of a plate material for manufacturing the case shown in fig. 40. Fig. 43 is a perspective view showing another example of the case shown in fig. 40, and fig. 44 is a planar development view of a plate material for manufacturing the case shown in fig. 42.

Referring to fig. 2 to 4 and 40 to 42, as described above, the case 100 includes: a bottom surface 110, a first side surface 120, a second side surface 130, and a back surface 140. The first side 120 and the second side 130 formed in a quadrangle are disposed opposite to each other. In addition, a first open portion 101 is formed in at least a part of the top surface opposite to the bottom surface 110 formed in a quadrangular shape, and a second open portion 102 is formed in at least a part of the front surface opposite to the rear surface 140 formed in a quadrangular shape.

In the present embodiment, the first open portion 101 is formed across the entire top surface and the second open portion 102 is formed across the entire front surface. In addition, the first open portion 101 and the second open portion 102 are formed to be connected to each other. That is, no structure is disposed between the first open portion 101 and the second open portion 102 to divide the space between the first open portion 101 and the second open portion 102, and thus the housing 100 is provided such that the top surface and the front surface thereof are all open.

The case 100 may be manufactured by bending one plate 10 to form at least three surfaces of the bottom surface 110, the first side surface 120, the second side surface 130, and the back surface 140.

As an example, the plate material 10 may be made of a metal plate having a rectangular shape with long sides and short sides. In such a sheet 10, the two bending lines 11 may be arranged to be spaced apart from each other along the long side direction of the sheet 10. Each bend line 11 may be formed by a straight line parallel to a short side of sheet 10.

The plate material 10 can be bent into a '+' shape with the bending line 11 as a center. Among the three surfaces thus formed, a surface disposed at the center in the longitudinal direction of the plate material 10 may form the bottom surface 110, and surfaces bent at both sides with the bottom surface 110 as the center may form the first side surface 120 and the second side surface 130, respectively.

When the case 100 is manufactured in the above-described manner, the bottom surface 110 of the case 100 can be integrally connected with the two side surfaces 120, 130 without a seam. Accordingly, not only the aesthetic appearance of the inside of the cooking chamber 105 can be improved, but also the effect of preventing foreign substances from being caught in the gap between the bottom surface 110 and the both side surfaces 120 and 130 of the housing 100 or preventing the foreign substances from falling through the gap to the second heating part 600 to be contaminated can be obtained.

According to the present embodiment, the front and top surfaces of the case 100 are open, and since there is no other structure for fixing the front side ends of the two side surfaces 120, 130 of the case 100, the first and second side surfaces 120, 130 of the case 100 have a structural weak point in which both sides are easily deformed.

If the bottom surface 110 and the two side surfaces 120, 130 of the case 100 are not joined together without a seam, but the bottom surface 110 and the two side surfaces 120, 130, which are separate pieces, are combined by a method such as welding, screw fastening, rivet fastening, or the like, thereby manufacturing the case 100, when an external force is applied to the two side surfaces 120, 130 of the case 100, the influence of the external force is necessarily concentrated to the combination portion between the respective surfaces.

Generally, welding, screw fastening, or rivet fastening can be performed only by spacing a predetermined interval along the bonding surfaces between the respective surfaces, and thus when an external force is applied to the two sides 120, 130 of the case 100, the influence of the external force is necessarily concentrated on several bonding portions, and thus, the structural rigidity of the first and second sides 120, 130 of the case 100 is necessarily reduced, and both sides are easily deformed.

In contrast, if the case 100 is manufactured in such a manner that the bottom surface 110 is integrally connected with the two side surfaces 120, 130 without a seam as shown in the present embodiment, when an external force is applied to the two side surfaces 120, 130 of the case 100, the influence of the external force can be distributed to the entire connection portion between the respective surfaces. Accordingly, the first side 120 and the second side 130 of the housing 100 may have better structural rigidity and resistance to lateral deformation.

In addition, the bottom surface 110 of the case 100 may include ceramic glass, which may be formed in a quadrangular plate shape having a predetermined thickness.

For example, ceramic glass may be disposed at a central portion cut in the bottom surface 110 made of a metal material, and such ceramic glass may be disposed between the second heating part 600 and the tray 200.

The hinge assembly 800 may be disposed outside both sides 120, 130 of the housing 100, respectively. The door 300 may be rotatably provided to the housing 100 using a combination with the hinge assembly 800 provided as described above as a medium.

The hinge assembly 800 may be coupled to the first side 120 and the second side 130 of the housing 100, respectively. At this time, it can be considered that coupling between the hinge assembly 800 and the housing 100 is achieved by coupling between the hinge housing 830 (fig. 19) of the hinge assembly 800 and the housing 100.

When the hinge assembly 800 is coupled to the first and second sides 120 and 130, respectively, the hinge assembly 800 may be fixed to the housing 100, and may also improve structural rigidity of the first and second sides 120 and 130 of the housing 100.

The front and top surfaces of the case 100 are open, and since there is no other structure for the front side ends of the two side surfaces 120, 130 of the case 100, the first side surface 120 and the second side surface 130 of the case 100 have a structural weakness in which both sides are easily deformed.

In view of these aspects, in the present embodiment, the hinge assembly 800 is coupled to the first and second sides 120 and 130, respectively. As described above, the hinge assembly 800 coupled to each of the first and second sides 120 and 130 can function to increase the overall thickness and rigidity of the two sides 120 and 130 of the housing 100. Accordingly, the structural rigidity of the two sides 120, 130 of the case 100 is increased, and resistance against lateral deformation may also be increased.

In addition, the side cover portions 135 may be formed at ends of the first and second side surfaces 120 and 130 adjacent to the front surface of the case 100, i.e., front ends of the first and second side surfaces 120 and 130, respectively. The side cover part 135 may be formed to protrude in a direction in which the first and second side surfaces 120 and 130 are distant from each other, i.e., in a direction toward both outer sides of the case 100.

The side cover part 135 may be formed by bending a front end of the first side 120 and a front end of the second side 130 at both sides, respectively. Such side cover portions 135 may be formed as planes parallel to the front and rear faces 140 of the case 100.

Further, since the side cover portions 135 are formed as described above, the first side surface 120 and the side cover portions 135, and the second side surface 130 and the side cover portions 135 may be integrally connected without a seam, in addition to the bottom surface 110 and the two side surfaces 120 and 130 of the housing 100.

The side cover 135 is exposed forward when the door 300 is opened. Since such side cover portions 135 are integrally connected with both side surfaces 120, 130 of the case 100 without a seam, an effect of improving the aesthetic appearance of the front surface of the cooking apparatus can be obtained.

On the other hand, the hinge assembly 800 coupled to the first side surface 120 is disposed in a space surrounded by the first side surface 120 and the side cover portion 135. Such a hinge assembly 800 contacts the first side 120 and the side cover 135 and is coupled to the first side 120 and the side cover 135.

That is, a side of the hinge assembly 800 opposite to the first side 120 may be in surface contact with the first side 120 and combined with the first side 120, and a front side of the hinge assembly 800 opposite to the side cover 135 may be in surface contact with a rear side of the side cover 135 and combined with the side cover 135.

The hinge assembly 800 coupled to the second side surface 120 is disposed in a space surrounded by the second side surface 130 and the side cover portion 135. Such a hinge assembly 800 contacts the second side 130 and the side cover part 135 and is coupled to the second side 130 and the side cover part 135.

That is, a side of the hinge assembly 800 opposite to the second side 130 may be in surface contact with the second side 130 and combined with the second side 130, and a front side of the hinge assembly 800 opposite to the side cover part 135 may be in surface contact with a rear side of the side cover part 135 and combined with the side cover part 135.

As described above, the side cover part 135 combined with the hinge assembly 800 can serve as a combination position for guiding the hinge assembly 800 in the front-rear direction. That is, a position of the hinge assembly 800 where a front surface opposite to the side cover part 135 contacts with a rear surface of the side cover part 135 may be guided as a coupling position of the hinge assembly 800.

In addition, the side cover part 135 may perform coupling between the housing 100 and the hinge assembly 800 in at least two directions, thereby contributing to increase coupling strength between the housing 100 and the hinge assembly 800.

In addition, when a coupling structure in which a structure (e.g., the side cover part 135') laterally protruding from the sides 120, 130 of the housing 100 and the hinge assembly 800 are coupled to each other in the front-rear direction is formed, it is possible to further improve resistance against lateral deformation of the two sides 120, 130 of the housing 100.

In addition, the side cover 135 shields the front of the hinge assembly 800 such that the hinge assembly 800 is not exposed to the front, and thus, when the door 300 is opened, the hinge assembly 800 is shielded by the side cover 135 from being exposed to the front. In addition, the side cover part 135 and the both sides 120, 130 of the case 100 are integrally connected without a seam, so that the aesthetic property of the front surface of the cooking apparatus can be further improved.

On the other hand, the bottom surface cover portions 111,115 may be provided at an end portion of the bottom surface 110 adjacent to the front surface of the case 100 and the back surface 140 of the case 100, i.e., at either one of a front end portion and a rear end portion of the bottom surface 110. In the present embodiment, the bottom cover portions 111 and 115 are provided at both the front end and the rear end of the bottom surface 110. Each of the bottom cover parts 111,115 may be formed to protrude in a direction away from the top surface of the case 100.

The bottom cover portions 111 and 115 may be formed by bending downward a front end portion and a rear end portion of the bottom surface 110, respectively. Such bottom cover parts 111,115 may be formed as planes parallel to the front and rear surfaces 140 of the case 100.

When the bottom cover portions 111 and 115 are formed as described above, the bottom surface 110 and the bottom cover portions 111 and 115 may be integrally connected without a seam, in addition to the bottom surface 110 and the two side surfaces 120 and 130 of the case 100.

Of the bottom cover portions 111 and 115, the bottom cover portion 111 disposed at the front end of the bottom is exposed forward together with the side cover portion 135 when the door 300 is opened. Such a bottom cover part 111 is integrally connected with the bottom surface of the case 100 without a seam, so that an effect of improving the aesthetic property of the front surface of the cooking apparatus can be obtained.

According to the present embodiment, the second heating part 600 (refer to fig. 26) may be disposed at a lower portion of the bottom surface 110 of the case 100. As described above, the front and rear of the second heating part 600 disposed at the lower portion of the bottom surface 110 of the housing 100 may be shielded by the bottom surface cover parts 111 and 115, respectively. The bottom cover portions 111 and 115 may be used as a coupling surface for coupling the base 180 (see fig. 26) supporting the second heating unit 600 from below to the bottom surface 110 of the housing 100.

On the other hand, the housing 100 of the present embodiment may further include a back plate 141. The back plate 141 may be formed of another plate material provided separately from the other illustrated plate materials 10 forming the case 100, and may be disposed at the rear side of the bottom surface 110 and both side surfaces 120, 130 of the case 100. Such a back plate 141 may be combined with at least one of the bottom surface 110, the first side surface 120, and the second side surface 130 to form a back surface of the case 100.

As shown in fig. 26 and 41, the housing 100 of the present embodiment may further include a rear case 150 (see fig. 26). The rear case 150 is disposed behind the rear surface 140 of the housing 100 formed by the back plate 141, and accommodates the second control substrate 700 therein. Such a rear case 150 may be coupled to the rear surface 140 of the case 100 via an insulating plate 160.

The rear case 150 may be disposed at an upper portion of the base 180. The rear case 150 is provided with a second control substrate 700 for supplying power to the second heating part 600 and controlling the operation of the second heating part 600, and the susceptor 180 is provided with the second heating part 600 controlled by such second control substrate 700 and a receiving coil 620 transmitting power to the second control substrate 700.

In view of these points, in the present embodiment, the second heating part 600, the receiving coil 620, the susceptor 180, the second control substrate 700, and the rear case 150 may be provided in the form of one unit body. That is, the second heating part 600, the susceptor 180, the second control substrate 700, and the rear case 150 may be provided in the form of one module combining the susceptor 180 provided with the second heating part 600 and the receiving coil 620 with the rear case 150 provided with the second control substrate 700.

Since the second heating unit 600, the receiving coil 620, and the second control board 700 have a deep relationship in the functional chambers, if they are provided in the form of one module as described above, the process of assembling these components can be managed individually, or can be stored and managed individually for each module, thereby improving the efficiency of manufacturing management and component management.

In addition, the rear case 150 provided in the above-described manner is coupled to the rear surface 140 of the case 100 and simultaneously serves as a support structure to support the rear surface 140. That is, a support structure for supporting the rear surface 140 of the case 100 with the rear case 150 having a lower portion supported by the base 180 may be added to the case 100, so that the structural rigidity of the case 100 may be further improved.

In addition, the bottom cover part 115 disposed at the rear end of the bottom surface 110 may be provided as a coupling surface for coupling between at least one of the back plate 141 and the rear case 150 and the bottom surface 110 of the case 100.

That is, at least one of the back plate 141 and the rear case 150 is coupled with the bottom cover part 115 disposed at the rear end of the bottom 110 to form a coupling with the bottom 110, so that it can be firmly coupled to the rear of the case 100.

According to the present embodiment, the space where the second heating part 600 is disposed and the space where the second control substrate 700 is disposed may be connected to each other. For this, the connection hole 181 may be formed through the base 180.

The connection hole 181 formed in the above-described manner may form a passage connecting a space where the second heating part 600 is disposed and a space where the second control substrate 700 is disposed to each other, that is, a space formed at the rear of the rear case 150 and a space formed at the upper portion of the susceptor 180. Through the passages formed in the above-described manner, wiring work for establishing electrical connection between the second heating part 600 and the second control substrate 700 and electrical connection between the receiving coil 620 and the second control substrate 700 may be performed.

The connection hole 181 may be formed to penetrate through a sidewall of the base 180, and a plurality of connection holes 181 are formed at the base 180, so that a plurality of passages connecting a space formed at the rear of the rear case 150 and a space formed at the upper portion of the base 180 to each other may be formed.

In addition, although not shown in detail, a plurality of gaps may be formed between the base 180 and the rear case 150, and a connection between a space formed at the rear of the rear case 150 and a space formed at an upper portion of the base 180 may also be achieved through such gaps.

The housing 100 of the present embodiment having the above-described configuration can provide the following effects.

First, the bottom surface 110 of the housing 100 is integrally connected to the two side surfaces 120 and 130 without a seam, so that the appearance of the inside of the cooking chamber 105 is improved, and the effect of preventing foreign substances from being caught in the gap between the bottom surface 110 of the housing 100 and the two side surfaces 120 and 130 or preventing the foreign substances from falling into the second heating part 600 through the gap and being contaminated is obtained.

Second, when the case 100 is manufactured in a form in which the bottom surface 110 is integrally connected with the both side surfaces 120, 130 without a seam, if an external force is applied to the both side surfaces 120, 130 of the case 100, the influence of the external force can be dispersed to the entire connection portion between the respective surfaces, and thus, it is possible to provide the case 100 with better structural rigidity and resistance to lateral deformation.

Third, a support structure in which both side surfaces 120, 130 of the housing 100 are supported by the hinge assembly 800, the rear surface of the housing 110 is supported by the rear case 150, which is supported by the base 180, is provided, so that the structural rigidity of the housing 100 can be more effectively improved.

Fourth, the portion of the door 300 exposed to the front while being opened is covered by the side cover part 135 and the bottom cover part 111, and such side cover part 135 and bottom cover part 111 may be integrally connected with both side surfaces 120, 130 and the bottom surface of the case 100 without a seam, so that an effect of improving the aesthetic property of the front of the cooking apparatus may be obtained.

On the other hand, fig. 43 and 44 show another example of the housing.

Referring to fig. 43 and 44, the case 100 may be manufactured in a form in which one plate 20 is bent to form the bottom surface 110, the first side surface 120, the second side surface 130, and the back surface 140.

That is, the housing 100 may be manufactured in a form that willThe left and right projecting portions of the shaped sheet material 20 are folded upward to form the bottom surface 110 and both side surfaces 120, 130 of the case 100, respectively, and the rear projecting portion is folded upward to form the rear surface 140 of the case 100.

When it is explained in further detail, the plate material 20 may be formed such that a metal plate of a quadrangle is orthogonal to the center in the long side direction of a metal plate of a quadrangle having long sides and short sidesAnd (4) shape.

In such a sheet material 20, the two first bending lines 21 may be arranged spaced apart from each other along the longitudinal direction of the metal plate. Each bend line 21 may be formed by a straight line parallel to a short side of sheet 10.

In addition, the plate material 20 may be provided with a second bending line 23, and the second bending line 23 may be formed by a straight line parallel to the long side of the metal plate. Such a second bend line 23 may be arranged between two first bend lines 21.

The plate material 20 may be bent into a '+' shape with the first bending line 21. Therefore, among the three surfaces formed, the surface disposed at the center in the longitudinal direction of the plate material 20 forms the bottom surface 110, and the surfaces bent in the lateral direction with the bottom surface 110 as the center may form the first side surface 120 and the second side surface 130, respectively.

In addition, when the plate 20 is bent with the second bending line 23 as the centerIn the case of the shape, the bottom surface 110 may be formed on a surface disposed at the center of the plate material 20 in the longitudinal direction, with the bottom surface 110 being the centerThe face of the core bend may form the back face 140.

When the case is manufactured in this form, the bottom surface 110, the two side surfaces 120, 130, and the back surface 140 of the case 100 may be integrally formed without seams between the bottom surface 110 and the two side surfaces 120, 130 of the case 100 and between the bottom surface 110 and the back surface 140 of the case 100.

Thereby, a seam inside the cooking chamber 105 is hardly visible when viewed from the front and the upper portion, and the inner side surface of the cooking chamber 105 can be kept smooth flat, and therefore, the components can further improve the beauty of the inside of the cooking chamber 105, and also an effect of easily removing stains stuck on the inner side surface of the cooking chamber 105 can be obtained.

While the invention has been described with reference to the embodiments shown in the drawings, which are intended to be exemplary only, it will be understood that various modifications and other equivalent embodiments may be made from the described embodiments by those skilled in the art. Therefore, the true technical scope of the present invention will be defined by the appended claims.