阅读说明：本技术 烤箱散热结构 (Heat dissipation structure of oven ) 是由 罗灵 文广才 杨均 曹骥 于 2018-08-23 设计创作，主要内容包括：本发明涉及一种烤箱散热结构,包括散热通道,其一端为进风端口,另一端为出风端口,进风端口上设置有离心风机组件,离心风机组件包括导风通道和离心风机,导风通道包括蜗壳状的导风腔和进风腔,离心风机的叶轮设置在导风腔中,该导风腔具有进风口和出风口,而出风口与进风端口流体连通,进风腔与导风腔通过上述进风口相通,且该进风腔上连通有至少一个进风通道。本发明中的烤箱散热结构也具有风量大且噪音低的特点,此外,通过进风腔增加导风通道进风量,并且进入进风腔后的冷空气能在进风腔中混流,从而能减少外界气流涡旋对叶轮运转的干扰,降低叶轮运行噪音,并能使气流平稳地进入导风腔中,在叶轮的离心力的作用下导入散热通道中。(The invention relates to an oven heat dissipation structure, which comprises a heat dissipation channel, wherein one end of the heat dissipation channel is an air inlet port, the other end of the heat dissipation channel is an air outlet port, a centrifugal fan assembly is arranged on the air inlet port, the centrifugal fan assembly comprises an air guide channel and a centrifugal fan, the air guide channel comprises a volute-shaped air guide cavity and an air inlet cavity, an impeller of the centrifugal fan is arranged in the air guide cavity, the air guide cavity is provided with an air inlet and an air outlet, the air outlet is communicated with the air inlet port in a fluid mode, the air inlet cavity is communicated with the air guide cavity through the air inlet, and at least one air. The oven heat radiation structure also has the characteristics of large air quantity and low noise, in addition, the air inlet quantity of the air guide channel is increased through the air inlet cavity, and cold air entering the air inlet cavity can be mixed in the air inlet cavity, so that the interference of outside airflow vortex to the running of the impeller can be reduced, the running noise of the impeller is reduced, the airflow can stably enter the air guide cavity and is guided into the heat radiation channel under the action of the centrifugal force of the impeller.)

1. A heat dissipation structure of an oven is characterized by comprising a heat dissipation channel (30), wherein one end of the heat dissipation channel (30) is provided with an air inlet port (31), the other end of the heat dissipation channel is provided with an air outlet port (32), a centrifugal fan component is arranged on the air inlet port (31),

the centrifugal fan assembly comprises an air guide channel (6) and a centrifugal fan (7), the air guide channel (6) comprises a volute-shaped air guide cavity (601) and an air inlet cavity (602), an impeller (71) of the centrifugal fan is arranged in the air guide cavity (601), the air guide cavity (601) is provided with an air inlet (61) and an air outlet (62), the air inlet (61) and the impeller (71) are concentrically arranged, and the air outlet (62) is communicated with the air inlet port (31) through fluid,

the air inlet cavity (602) is communicated with the air guide cavity (601) through the air inlet (61), and the air inlet cavity (602) is communicated with at least one air inlet channel (8) communicated with the outside.

2. The oven heat dissipation structure as claimed in claim 1, wherein the air guide channel (6) is formed in a volute shape as a whole, the inner cavity of the air guide channel (6) is layered up and down through a first partition plate (344) to form the air guide cavity (601) and the air inlet cavity (602), the air outlet (62) is disposed on one side of the air guide channel (6), three air inlet channels (8) are spaced from one another on the other side of the air guide channel (6), and the air inlet (61) is disposed on the first partition plate (344).

3. The oven heat dissipation structure of claim 2, wherein each air inlet channel (8) is uniformly spaced on the other side of the air guide channel (6), and each air inlet channel (8) forms a 90-degree included angle with other adjacent air inlet channels (8).

4. The oven heat dissipation structure according to any one of claims 1 to 3, wherein a first heat dissipation branch duct (301) and a second heat dissipation branch duct (302) are arranged in the heat dissipation channel (30) in parallel up and down or left and right along a direction from the air inlet port (31) to the air outlet port (32), the air outlet end of the ventilation duct (5) of the oven is located in the first heat dissipation branch duct (301), the control circuit board (9) of the oven is installed on an independent side wall of the first heat dissipation branch duct (301), and the air outlet of the second heat dissipation branch duct (302) leads to the door body (2) of the oven.

5. The heat dissipating structure of an oven as claimed in claim 4, wherein the inner cavity of the heat dissipating channel (30) is divided into the first heat dissipating branch (301) and the second heat dissipating branch (302) by a second partition (34), and the control circuit board (9) is installed on the top wall of the first heat dissipating branch (301).

6. The heat dissipating structure of an oven according to claim 5, wherein the air inlet port (31) is in fluid communication with the air outlet (62) through a connecting passage (10), a partition plate (34) extending along a length direction of the connecting passage (10) is vertically disposed in the connecting passage (10), the partition plate (34) divides the air inlet port (31) into two left and right branch ports (310), and each branch port (310) is divided into two upper and lower portions by the second partition plate (34),

wherein, a first baffle (301a) is arranged in the branch port (310) corresponding to the first heat dissipation branch channel (301), the first baffle (301a) closes the lower part of the branch port (310) separated by the second partition plate (34), a second baffle (302a) is arranged in the branch port (310) corresponding to the second heat dissipation branch channel (302), and the second baffle (302a) closes the upper part of the branch port (310) separated by the second partition plate (34).

7. The heat dissipation structure of oven of claim 6, wherein the first heat dissipation branch (301) and the second heat dissipation branch (302) are respectively provided with a first flow guiding plate (301b) and a second flow guiding plate (302b), the air inlets of the first heat dissipation branch (301) and the second heat dissipation branch (302) are respectively located at one side of the corresponding heat dissipation branch, and the first flow guiding plate (301b) and the second flow guiding plate (302b) are respectively used for guiding the air inlets of the first heat dissipation branch (301) and the second heat dissipation branch (302) to the other side of the corresponding heat dissipation branch.

8. The heat dissipating structure of an oven as claimed in claim 7, wherein the first flow guiding plate (301b) is inserted into the first heat dissipating branch (301), and one end of the first flow guiding plate is fixed to the partition plate (34) and the other end of the first flow guiding plate extends to the other side of the first heat dissipating branch (301) opposite to the air inlet.

9. The heat dissipating structure of an oven as claimed in claim 7, wherein the second flow guiding plate (302b) is inserted into the second heat dissipating branch (302), and one end of the second flow guiding plate is fixed to the partition plate (34) and the other end of the second flow guiding plate extends to the other side of the second heat dissipating branch (302) opposite to the air inlet.

10. The oven heat dissipation structure according to claim 4, wherein the door body (2) comprises an outer glass (21) and a middle glass (22) which are arranged in front and at the back, a heat dissipation gap (23) communicated with the outside is formed between the outer glass (21) and the middle glass (22), and the air outlet of the second heat dissipation branch duct (302) is communicated with the heat dissipation gap (23).

Technical Field

The invention relates to the field of ovens, in particular to an oven heat dissipation structure.

Background

Traditional oven generally adopts cross-flow fan and single heat dissipation channel to dispel the heat to the oven, chinese utility model patent as patent number ZL201120306724.0(CN202173286U) discloses an electric oven, and it has the box that has a body, and the top of box is provided with the heat dissipation case, and the heat dissipation case has the air outlet that exposes the preceding terminal surface of box, still has the air intake that supplies outside hot-blast entering heat dissipation incasement on the lateral wall of heat dissipation case, and it has the intercommunication to open on the roof of box the wind-guiding mouth of box and heat dissipation case, still install in the heat dissipation case and will get into the hot-blast row in the heat dissipation case to the radiator fan of air outlet. The heat dissipation fan in this patent is cross-flow fan, and the heat dissipation case constitutes only heat dissipation channel promptly, and the amount of wind that this kind of heat radiation structure needs is great for the noise that cross-flow fan produced is also great, and in addition, this kind of heat radiation structure can take away the heat that produces in the oven working process, also can reduce the heat that overhead control circuit board produced. However, the door body of the oven has the problem of high temperature in the working process, and the existing heat dissipation structure of the oven cannot effectively dissipate heat of the door body of the oven.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a heat dissipation structure of an oven with large air volume and low noise.

The first technical problem to be solved by the invention is to provide an oven heat dissipation structure which has large air volume and low noise and can simultaneously dissipate heat of a box body and a door body, aiming at the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an oven heat radiation structure, its characterized in that includes heat dissipation channel, and this heat dissipation channel's one end is the air inlet port, and the other end is the air outlet port, is provided with centrifugal fan subassembly on the above-mentioned air inlet port, centrifugal fan subassembly includes wind-guiding passageway and centrifugal fan, and this wind-guiding passageway includes volute form wind-guiding chamber and air inlet chamber, and this centrifugal fan's impeller sets up in wind-guiding chamber, and this wind-guiding chamber has air intake and air outlet, and this air intake sets up with above-mentioned impeller is concentric, and the air outlet communicates with each other with above-mentioned air inlet port fluid, and above-mentioned air inlet chamber communicates with each other through above-mentioned air intake with wind-guiding chamber, and communicates there is at.

In order to enable each air flow entering the air inlet cavity to be mixed in the air inlet cavity better, the whole shape of the air guide channel is in a volute shape, an inner cavity of the air guide channel is vertically layered through a first partition plate to form the air guide cavity and the air inlet cavity respectively, the air outlet is arranged on one side of the air guide channel, three air inlet channels are distributed on the other side of the air guide channel at intervals, and the air inlet is formed in the first partition plate.

In order to lead the external cold air into the air inlet cavity better through the air inlet channels and further increase the air inlet quantity, the air inlet channels are uniformly distributed at the other side of the air guide channel at intervals, and 90-degree included angles are formed between the air inlet channels and other adjacent air inlet channels.

Preferably, a first heat dissipation branch channel and a second heat dissipation branch channel are arranged in the heat dissipation channel in parallel up and down or left and right along the direction from the air inlet port to the air outlet port, the air outlet end of the ventilation pipe of the oven is located in the first heat dissipation branch channel, the control circuit board of the oven is installed on the independent side wall of the first heat dissipation branch channel, and the air outlet of the second heat dissipation branch channel is communicated with the door body of the oven. The air-out of centrifugal fan subassembly can get into first heat dissipation branch way and second heat dissipation branch way respectively like this, the cold wind energy that gets into in the first heat dissipation branch way takes the oven with ventilation duct exhaust heat away, can dispel the heat to control circuit board simultaneously, and simultaneously, the second heat dissipation branch way is not the inside heat source of direct contact oven, therefore the wind that the second heat dissipation branch way blew off is the lower cold wind of temperature, the cold wind that the second heat dissipation branch way blew off accesss to the door body of oven, thereby can reduce the door body, avoid the too high temperature of the door body of oven and scald operator's hand.

For making heat dissipation channel inner structure simple, the convenient setting, heat dissipation channel's inner chamber passes through the second baffle and separates for above-mentioned first heat dissipation branch way and second heat dissipation branch way from top to bottom, and above-mentioned control circuit board is installed on the roof of first heat dissipation branch way.

In order to enable cold air led out from the air outlet to be divided into a first heat dissipation branch channel and a second heat dissipation branch channel more smoothly, the air inlet port is communicated with the air outlet through a connecting channel fluid, a partition plate extending along the length direction of the connecting channel is vertically arranged in the connecting channel, the partition plate divides the air inlet port into a left branch port and a right branch port, each branch port is divided into an upper part and a lower part by the second partition plate, a first baffle plate is arranged in the branch port corresponding to the first heat dissipation branch channel, the first baffle plate seals the lower side part of the branch port divided by the second partition plate, a second baffle plate is arranged in the branch port corresponding to the second heat dissipation branch channel, and the second baffle plate seals the upper side part of the branch port divided by the second partition plate.

For carrying out the water conservancy diversion to the air that gets into in each heat dissipation branch way to can avoid the air stagnation in the heat dissipation branch way and influence radiating effect and efficiency, be provided with first drainage plate and second drainage plate in first heat dissipation branch way and the second heat dissipation branch way respectively, the air inlet department of first heat dissipation branch way and second heat dissipation branch way is located the one side that corresponds the heat dissipation branch way respectively, and above-mentioned first drainage plate and second drainage plate are used for leading the air inlet of first heat dissipation branch way and second heat dissipation branch way to the opposite side that corresponds the heat dissipation branch way respectively.

Further, preferably, first drainage plate clamp is established in first heat dissipation branch way, and its one end is fixed with the division board, and the other end extends to first heat dissipation branch way for the opposite side of its air inlet department.

Further, preferably, the second drainage plate is clamped in the second heat dissipation branch channel, one end of the second drainage plate is fixed to the partition plate, and the other end of the second drainage plate extends towards the other side, opposite to the air inlet, of the second heat dissipation branch channel.

In order to better reduce the temperature of the door body, the door body comprises outer glass and middle glass which are arranged in front and at the back, a heat dissipation gap communicated with the outside is formed between the outer glass and the middle glass, and the air outlet of the second heat dissipation branch channel is communicated with the heat dissipation gap.

Compared with the prior art, the invention has the advantages that: in addition, the air guide channel is internally provided with an air inlet cavity which is communicated with at least one air inlet channel, so that the air inlet amount of the air guide channel can be increased, and cold air entering the air inlet cavity can be mixed in the air inlet cavity, so that the interference of the vortex of external air flow on the running of an impeller can be reduced, the running noise of the impeller can be reduced, the air flow can stably enter the air guide cavity and is guided into the heat dissipation channel under the action of the centrifugal force of the impeller.

Drawings

FIG. 1 is a cross-sectional view of an oven embodying the present invention;

FIG. 2 is an enlarged view of the portion I in FIG. 1

FIG. 3 is a schematic view of a portion of an oven according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 in another direction;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is an enlarged view of section II of FIG. 6;

FIG. 8 is a schematic view illustrating an air intake process of the air guide channel according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating a first heat dissipation branch channel according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a second heat dissipation branch channel in the embodiment of the invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 10, an oven includes a box body 1, an inner container 100 is disposed in the box body 1, a door 2 is disposed on a front surface of the box body 1, and a heat dissipation structure is disposed on a top of the inner container 100.

The door body 2 includes an outer glass 21 and a middle glass 22 arranged in parallel in front and back, a heat dissipation gap 23 is formed between the outer glass 21 and the middle glass 22, and the heat dissipation gap 23 is opened at the upper and lower sides and is respectively a top inlet 231 and a bottom outlet 232. The top of the inner container 100 is provided with a top plate 11, the top plate 11 is covered with an air deflector 3, and the air deflector 3 and the top plate 11 enclose a heat dissipation channel 30. This heat dissipation channel 30's one end is air inlet port 31, and the other end is air outlet port 32, is provided with the centrifugal fan subassembly on the above-mentioned air inlet port 31, and the air-out of centrifugal fan subassembly can get into heat dissipation channel 30 through air inlet port 31 like this to derive the heat, realize the heat dissipation to the oven.

Further, a second partition plate 34 parallel to the top plate 11 is disposed in the heat dissipation channel 30, and the heat dissipation channel 30 is divided into a first heat dissipation branch channel 301 and a second heat dissipation branch channel 302 by the second partition plate 34, so that the outlet air of the centrifugal fan assembly can enter the first heat dissipation branch channel 301 and the second heat dissipation branch channel 302 respectively. In this embodiment, the control circuit board 9 of the oven is installed on the air deflector 3, the air outlet end of the ventilation pipe 5 of the oven is located in the first heat dissipation branch channel 301, so that the cold air entering the first heat dissipation branch channel 301 can bring the heat exhausted by the ventilation pipe 5 out of the oven, and at the same time, the control circuit board 9 can dissipate heat, and meanwhile, the second heat dissipation branch channel 302 does not directly contact the heat source inside the oven, so that the air blown out from the second heat dissipation branch channel 302 is cold air with lower temperature, and the cold air blown out from the second heat dissipation branch channel 302 is led to the door body 2 of the oven, so that the door body 2 can be reduced, and the situation that the temperature of the oven door body 2 is too high and the hands of an operator are. In order to lower the temperature of the door 2 better, in this embodiment, the outlet air of the second heat dissipation branch channel 302 is introduced into the heat dissipation gap 23 from the top inlet 231 of the heat dissipation gap 23, so that the cold air is introduced into the heat dissipation gap 23, moves from top to bottom and takes away the heat on the door 2.

In this embodiment, adopt the centrifugal fan subassembly, compare with current cross-flow fan, centrifugal fan has the amount of wind big, characteristics such as the noise is little to make the oven heat radiation structure in this application also have the big and low advantage of noise of the amount of wind, and then can promote heat radiation structure's radiating effect. Further, in this embodiment, the centrifugal fan assembly includes an air guiding channel 6 and a centrifugal fan 7, the air guiding channel 6 includes a volute-shaped air guiding cavity 601 and an air inlet cavity 602, an impeller 71 of the centrifugal fan 7 is disposed in the air guiding cavity 601, the air guiding cavity 601 has an air inlet 61 and an air outlet 62, the air inlet 61 and the impeller 71 are concentrically disposed, the air outlet 62 is in fluid communication with the air inlet port 31, the air inlet cavity 602 is communicated with the air guiding cavity 601 through the air inlet 61, and the air inlet cavity 602 is communicated with at least one air inlet channel 8 communicated with the outside. An air inlet cavity 602 is arranged in the air guide channel 6, the air inlet cavity 602 is communicated with at least one air inlet channel 8, so that the air inlet amount of the air guide channel 6 can be increased, and cold air entering the air inlet cavity 602 can be mixed in the air inlet cavity 602, so that the interference of the outside airflow vortex on the running of the impeller 71 can be reduced, the running noise of the impeller can be reduced, and then the airflow can stably enter the air guide cavity 601 and is guided into the heat dissipation channel 30 under the action of the centrifugal force of the impeller 71.

Specifically, the air guiding channel 6 is in a volute shape as a whole, the inner cavity of the air guiding channel 6 is layered up and down through the first partition 344 to form the air guiding cavity 601 and the air inlet cavity 602, the air outlet 62 is disposed on one side of the air guiding channel 6, three air inlet channels 8 are distributed on the other side of the air guiding channel 6 at intervals, and the air inlet 61 is disposed on the first partition 344. Each air inlet channel 8 is uniformly distributed at the other side of the air guide channel 6 at intervals, and each air inlet channel 8 and other adjacent air inlet channels 8 form a 90-degree included angle, so that external cold air can be better guided into the air inlet cavity 602 through the air inlet channels 8, and the air inlet volume is further increased. In addition, the impeller 71 is eccentrically disposed in the air guiding cavity 601, and the motor 72 of the centrifugal fan 7 is mounted at the top of the air guiding channel 6, so that more air can be accumulated in the gap of the air guiding cavity 601, and the air output of the centrifugal fan 7 is increased, so that more cold air enters the heat dissipating channel 30.

In order to make the cold air led out from the air outlet 62 more smoothly flow into the first heat dissipation branch channel 301 and the second heat dissipation branch channel 302, the air inlet port 31 of the heat dissipation channel 30 is in fluid communication with the air outlet 62 through the connecting channel 10, a partition plate 34 extending along the length direction of the connecting channel 10 is vertically arranged in the connecting channel 10, the partition plate 34 divides the air inlet port 31 into a left branch port 310 and a right branch port 310, and each branch port 310 is divided into an upper part and a lower part by the second partition plate 34. Wherein, a first baffle 301a is provided in the branch port 310 corresponding to the first heat dissipation branch passage 301, the first baffle 301a closing a lower portion of the branch port 310 partitioned by the second partition 34, so that the air flow entering the branch port 310 enters the first heat dissipation branch passage 301 through an upper opening portion thereof partitioned by the second partition 34. A second baffle 302a is provided in the branch port 310 corresponding to the second heat dissipation branch passage 302, and the second baffle 302a closes an upper portion of the branch port 310 divided by the second partition 34, so that the air flow entering the branch port 310 enters the second heat dissipation branch passage 302 through a lower opening portion thereof divided by the second partition 34. Preferably, the sub-port 310 corresponding to the first heat dissipation branch 301 is the left sub-port 310, and correspondingly, the sub-port 310 corresponding to the second heat dissipation branch 302 is the right sub-port 310, the left sub-port 310 is located in the air flowing direction of the air outlet 62 of the air guiding cavity 601, and the area of the left sub-port 310 is larger than that of the right sub-port 310, so that in the air outlet of the air outlet 62, a larger part enters the first heat dissipation branch 301 through the left sub-port 310, and a relatively smaller part enters the second heat dissipation branch 302 through the right sub-port 310, so that the oven in this embodiment utilizes the remaining cool air to dissipate heat of the door body 2 on the basis of ensuring normal heat dissipation of the oven body 1 and the control circuit board 9.

In order to guide the air entering each heat dissipation branch, so as to avoid the air from stagnating in the heat dissipation branch and affecting the heat dissipation effect and efficiency, it is preferable that the first heat dissipation branch 301 and the second heat dissipation branch 302 are respectively provided with a first flow guiding plate 301b and a second flow guiding plate 302b, the air inlets of the first heat dissipation branch 301 and the second heat dissipation branch 302 are respectively located at one side of the corresponding heat dissipation branch, and the first flow guiding plate 301b and the second flow guiding plate 302b are respectively used for guiding the air inlets of the first heat dissipation branch 301 and the second heat dissipation branch 302 to the other side of the corresponding heat dissipation branch, specifically, the first flow guiding plate 301b is sandwiched in the first heat dissipation branch 301, one end of the first flow guiding plate is fixed to the partition 34, the other end of the first flow guiding plate 302b extends to the right side of the first heat dissipation branch 301, and the included angle α formed by the first flow guiding plate 302b and the left side edge of the first heat dissipation branch 301 is 80 ° -100 ° (α is 89 ° in this embodiment, the air outlet pipe 5 is located at the right side of the second heat dissipation branch 301, and the second flow guiding plate 302b extends to the left side of the second heat dissipation branch 301, and the second heat dissipation branch 301 is sandwiched at an included angle β ° -35 ° in this embodiment, 3670 ° of the second heat dissipation branch 301, α is sandwiched in this embodiment, β, and β.

In order to make the outlet air of the second heat dissipation branch channel 302 be guided into the heat dissipation gap 23 more smoothly, in this embodiment, the front side edges of the first partition 344 and the top plate 11 are both inclined downward toward the top inlet 231 of the heat dissipation gap 23 to form the first guide vane 41 and the second guide vane 111, respectively, the first guide vane 41 and the second guide vane 111 are parallel to each other and both form an included angle of 120 ° with the vertical direction, and the free ends of the first guide vane 41 and the second guide vane 111 are both spaced from the top inlet 231 of the heat dissipation gap 23. The cool air in the second heat dissipation branch 302 can flow into the heat dissipation gap 23 by the flow guiding action of the first guide vane 41 and the second guide vane 111. In addition, the front side edge of the air deflector 3 is inclined upwards to form a third deflector 33, and the third deflector 33 is symmetrically arranged with the first deflector 41, so that the cross section of the air outlet of the first heat dissipation branch channel 301 is flared in a bell mouth shape, thereby increasing the speed of guiding hot air out of the oven and improving the heat dissipation efficiency of the first heat dissipation branch channel 301.

The front, rear, left, right and other orientation descriptions in the embodiments of the present invention are all referred to by the operator.