阅读说明：本技术 用于油烟机的送风机构及油烟机 (Air supply mechanism for range hood and range hood ) 是由 赵海霞 王伟 孙兴朋 范强 于 2019-11-29 设计创作，主要内容包括：本申请涉及一种用于油烟机的送风机构,油烟机包括外壳和限定油烟通道的内筒,在外壳和内筒之间形成有拢烟腔送风机构包括：风轮,设置于拢烟腔内,通过轴承套接于内筒的外壁,可围绕内筒转动,在拢烟腔内产生气流；驱动机构,与风轮连接,被配置为驱动风轮转动。风轮相对油烟通道转动,能够形成向下流动的气流,使送风机构向拢烟腔的下部送风。送风机构设置于拢烟腔的内部,能够减小送风机构在径向上对外部空间的占用。本申请还公开了一种油烟机。(The application relates to an air supply mechanism for lampblack absorber, lampblack absorber include the shell and inject the inner tube of oil smoke passageway, are formed with between shell and inner tube and hold together cigarette chamber air supply mechanism and include: the wind wheel is arranged in the smoke collecting cavity, is sleeved on the outer wall of the inner cylinder through a bearing, can rotate around the inner cylinder and generates airflow in the smoke collecting cavity; and the driving mechanism is connected with the wind wheel and is configured to drive the wind wheel to rotate. The wind wheel rotates relative to the oil smoke channel, and can form downward flowing air flow, so that the air supply mechanism supplies air to the lower part of the smoke collecting cavity. The air supply mechanism is arranged in the smoke collecting cavity, and the occupation of the air supply mechanism to the external space in the radial direction can be reduced. The application also discloses a range hood.)

1. The utility model provides an air supply mechanism for lampblack absorber, lampblack absorber include the shell and inject the inner tube of oil smoke passageway the shell with be formed with between the inner tube and hold together the cigarette chamber, its characterized in that, air supply mechanism includes:

the wind wheel is arranged in the smoke collecting cavity, is sleeved on the outer wall of the inner cylinder through a bearing, can rotate around the inner cylinder, and generates airflow in the smoke collecting cavity;

the driving mechanism is connected with the wind wheel and is configured to drive the wind wheel to rotate.

2. The air delivery mechanism of claim 1, wherein the wind wheel comprises:

the inner ring is sleeved on the outer wall of the bearing;

the outer ring is arranged on the outer side of the inner ring and is concentric with the inner ring;

the blades are uniformly distributed between the inner ring and the outer ring, and two ends of each blade are fixedly connected with the inner ring and the outer ring respectively.

3. The air supply mechanism of claim 2, wherein the outer wall of the outer ring is of a gear structure, and the drive mechanism comprises:

and the driving gear is meshed with the outer wall of the outer ring and drives the wind wheel to rotate when the gear is driven to rotate in a controlled manner.

4. The air supply mechanism of claim 3, wherein the drive mechanism further comprises:

a motor configured to drive the driving gear to rotate.

5. The air supply mechanism according to claim 1, wherein the drive mechanism is disposed in the smoke collection chamber.

6. A range hood, including outer cover and inner cylinder to limit the soot channel, form and hold together the smoke cavity between said outer cover and said inner cylinder, characterized by, also include the air supply mechanism according to any claim 1 to 5.

7. A range hood according to claim 6, characterized in that an impeller is arranged in the oil smoke channel, and the impeller and the wind wheel are located at the same height.

8. A range hood according to claim 7, further comprising:

a controller configured to control the impeller and the wind wheel to rotate; wherein the rotation direction of the wind wheel is opposite to the rotation direction of the impeller.

9. A range hood according to claim 6, wherein said air supply mechanism is disposed at an upper portion of said smoke collecting chamber.

10. A range hood according to claim 9, characterized in that an air outlet is arranged at the lower part of the smoke collecting cavity.

Technical Field

The application relates to the technical field of oil smoke treatment equipment, for example to an air supply mechanism and a range hood for a range hood.

Background

At present, with the improvement of life quality, the requirement of people on the oil fume suction capacity of a kitchen range hood is continuously improved. As the height of a high-rise building is increased, the resistance of a flue and the high-altitude wind resistance of a kitchen range hood are increased continuously, and the problems of unsmooth oil smoke absorption and smoke leakage caused by insufficient wind volume and wind pressure are often presented. Some lampblack absorbers are provided with a smoke collecting cavity outside the smoke collecting cavity, and air is supplied into the smoke collecting cavity, so that an air outlet of the smoke collecting cavity forms a smoke collecting air curtain at the periphery of the smoke collecting cavity, and a negative pressure area is formed at a smoke inlet of the smoke collecting cavity, and effective smoking is achieved.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the air supply mechanism of the cigarette gathering cavity needs to be arranged outside the cigarette gathering cavity, and occupies a large external space.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air supply mechanism for a range hood and the range hood, and aims to solve the technical problem that the air supply mechanism for gathering a smoke chamber needs to be arranged outside the smoke chamber and occupies a large external space.

In some embodiments, an air supply mechanism for a range hood, the range hood including a housing and an inner tube defining a smoke passage, the air supply mechanism having a smoke collection chamber formed between the housing and the inner tube includes: the wind wheel is arranged in the smoke collecting cavity, is sleeved on the outer wall of the inner cylinder through a bearing, can rotate around the inner cylinder and generates airflow in the smoke collecting cavity; and the driving mechanism is connected with the wind wheel and is configured to drive the wind wheel to rotate.

The air supply mechanism and the lampblack absorber for lampblack absorber that this disclosed embodiment provided can realize following technological effect: the driving mechanism of the air supply mechanism drives the wind wheel to rotate relative to the oil smoke channel, downward flowing air flow can be formed at the lower part of the wind wheel, and when the air supply mechanism is applied to the range hood, the air supply mechanism can be arranged inside the smoke gathering cavity, so that the air supply mechanism supplies air to the lower part of the smoke gathering cavity. The air supply mechanism is arranged in the smoke collecting cavity, and the occupation of the air supply mechanism to the external space in the radial direction can be reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of a range hood provided by an embodiment of the disclosure;

fig. 2 is a schematic diagram of a range hood provided by the embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of an air supply mechanism provided in the embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of an air delivery mechanism provided by an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of an air delivery mechanism provided in another disclosed embodiment;

FIG. 6 is a cross-sectional view of a smoke-collecting wind screen structure provided by an embodiment of the present disclosure;

fig. 7 is an enlarged view of a portion B of the smoke-collecting wind curtain structure provided by the embodiment of the disclosure.

Reference numerals:

1: a main fan; 2: a fixed tube; 3: an air outlet interface component; 4: an inner barrel; 5: a smoke collecting hood; 6: a housing; 61: a boss portion; 62: an inclined portion; 63: a vertical portion; 7: an air supply mechanism; 8: a smoke collection cavity; 9: collecting a smoke air curtain; 10: a wind wheel; 11: a drive mechanism; 12: an impeller; 13: a bearing; 101: an outer ring; 102: an inner ring; 103: a blade; 111: a drive gear; 112: an electric motor.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The whole range hood related to the invention has a plurality of parts, as shown in fig. 1 and 2, a fixed pipe 2 which is connected with an air inlet of a main fan 1 and can be detached during maintenance is used for conveying oil smoke to the main fan 1 through the fixed pipe 2; the air outlet interface component 3 is connected with the outlet of the main fan 1, and the air outlet interface component 3 is communicated with the public flue through a pipeline; an inner cylinder 4 which is connected with the air inlet of the fixed pipe 2 and can slide up and down along the Y axis, and a smoke collecting hood 5 which forms a smoke collecting cavity 8 is fixedly connected below the inner cylinder 4; gather together cigarette wind curtain structure, wherein gather together cigarette wind curtain structure and include wind curtain air supply intermediate layer, wind curtain air supply intermediate layer is formed by the combination of inner tube 4 lower part, collection petticoat pipe 5 and shell 6 and delimits, includes the vertical cylinder intermediate layer part parallel with the Y axle and has the oblique cone intermediate layer part of certain angle with the Y axle. The lower part of the oblique cone interlayer is provided with an air outlet, and airflow flows out from the air outlet to form a smoke collecting air curtain 9. The air outlet is in the shape of a rectangular slit or a wavy slit. The inner cylinder 4, the smoke collecting wind curtain structure and the smoke collecting hood 5 can move up and down together.

The air supply path of the smoke-collecting air curtain structure is as follows: the air supply mechanism 7 pressurizes and blows out the surrounding air, the air is sent into the air supply interlayer of the air curtain to continue to carry out small-range pressure equalization, and finally the air is blown out from the air outlet, so that the effect of reducing the negative pressure area and efficiently gathering the smoke as shown in figure 2 is formed.

The path of the range hood for absorbing the oil smoke is as follows: after oil smoke is generated from the kitchen range, the oil smoke is collected and sucked into the inner cylinder 4 through the smoke collection cavity 8, enters the fixed pipe 2, is pressurized by the main fan 1 and is discharged to the public flue.

As shown in fig. 3 and 4, in one aspect, the present invention provides an air supply mechanism 7 for a range hood, the range hood including a housing 6 and an inner cylinder 4 defining a smoke passage, a smoke collection chamber formed between the housing 6 and the inner cylinder 4, the air supply mechanism 7 including: the wind wheel 10 is arranged in the smoke collecting cavity, is sleeved on the outer wall of the inner cylinder 4 through a bearing 13, can rotate around the inner cylinder 4 and generates airflow in the smoke collecting cavity; and the driving mechanism 11 is connected with the wind wheel 10 and is configured to drive the wind wheel 10 to rotate.

Wind wheel 10 can form through CNC cutting for the metal material, also can be through the casting shaping, the centre is the circular structure of fretwork, bearing 13's outer lane 101 is inlayed on circular structure's inner wall, outer lane 101 is static relative wind wheel 10, inner circle 102 cover is at the outer wall of inner tube 4, static relative with the outer wall, when wind wheel 10 received the torsional force, wind wheel 10 is rotatory relative to inner tube 4, rotatory in-process wind wheel 10 can produce the air current towards a direction. Air is supplied through the wind wheel 10, so that the air flow pressure in the smoke collecting cavity is distributed uniformly, and a stable smoke collecting air curtain is formed. The rotation of the wind wheel 10 is driven by a driving mechanism 11, and the driving mechanism 11 and the wind wheel 10 can be in conventional forms such as belt transmission, chain transmission, synchronous belt transmission and the like.

In some embodiments, wind rotor 10 includes: the inner ring 102 is sleeved on the outer wall of the bearing 13; an outer ring 101 disposed outside the inner ring 102 and concentric with the inner ring 102; the blades 103 are uniformly distributed between the inner ring 102 and the outer ring 101, and two ends of each blade 103 are fixedly connected with the inner ring 102 and the outer ring 101 respectively. The inner ring 102 and the outer ring 101 of the wind wheel 10 are in a sleeved relationship, and can be connected together through a plurality of blades 103 between the inner ring 102 and the outer ring 101, or a connecting piece can be arranged between the inner ring 102 and the outer ring 101 for connection. In order to ensure the connection strength between the inner ring 102 and the bearing 13, reduce the weight of the wind wheel 10 to the maximum extent, and reduce energy consumption, the wall thickness of the inner ring 102 is greater than that of the outer ring 101. Under the condition of high rotating speed, the wind wheel 10 can rotate more stably, the blades 103 are not easy to deform, and the stability and the structural strength of air supply are improved. The wind wheel 10 can be driven by driving the outer ring 101, the mode that the conventional wind wheel 10 is driven by connecting a driving shaft is broken, and the structure is more flexible.

In some embodiments, the outer wall of the outer ring 101 is a gear structure, and the driving mechanism 11 includes: and a driving gear 111 engaged with an outer wall of the outer ring 101, for driving the wind wheel 10 to rotate when the driving gear 111 is controlled to rotate. The driving size can be directly meshed with the outer wall of the outer ring 101 or meshed with the outer wall of the outer ring 101 through a speed change gear, so that different rotating speed requirements of the wind wheel 10 are met. Alternatively, the size of the driving gear 111 is smaller than that of the outer ring 101, which both saves overall space and increases the torque transmitted to the wind wheel 10, preventing damage to the prime mover due to excessive driving torque at stationary start.

In some embodiments, the drive mechanism 11 further comprises: and a motor 112 configured to drive the driving gear 111 to rotate. The output shaft of the motor 112 passes through the inner hole of the driving gear 111 and is connected with the driving gear 111 through a key, so that the torque between the motor 112 and the driving gear 111 is transmitted, and the slipping is prevented.

In some embodiments, the driving mechanism 11 is disposed in the smoke collecting chamber. Actuating mechanism 11 sets up in holding together the cigarette intracavity, makes the outward appearance of lampblack absorber more harmonious unanimous to because actuating mechanism 11 is rotary part usually, set up it in holding together the cigarette intracavity, prevent that the user from twining into actuating mechanism 11 with article in the use, reduced the potential safety hazard.

As shown in fig. 5, another aspect of the present invention provides a range hood, which includes a housing 6 and an inner cylinder 4 defining a smoke passage, wherein a smoke collecting cavity is formed between the housing 6 and the inner cylinder 4, and the range hood further includes any one of the air supply mechanisms 7.

In some embodiments, an impeller 12 is disposed in the soot passage, and the impeller 12 and the wind wheel 10 are located at the same height. In order to improve the effect of absorbing the oil smoke, an impeller 12 needs to be arranged between the main fan 1 and the smoke collection cavity 8, and the rotation of the impeller 12 can generate negative pressure below the impeller 12, so that the oil smoke in the smoke collection cavity 8 is forced to pass through the impeller 12 and enter the main fan 1, and the whole body plays a joint role. Because the direction of the airflow generated by the wind wheel 10 is just opposite to the direction of the airflow generated by the impeller 12, the rotating direction of the wind wheel 10 is opposite to the rotating direction of the impeller 12, and the impeller 12 and the wind wheel 10 are arranged at the same height, so that the vibration generated by the rotation of the impeller 12 and the wind wheel 10 can mutually offset a part, thereby greatly reducing the noise and improving the user experience.

In some embodiments, the range hood further comprises a controller configured to control the impeller 12 and the wind wheel 10 to rotate; wherein the rotation direction of the wind wheel 10 is opposite to the rotation direction of the impeller 12. For example, when the driving mechanism 11 includes the motor 112, the controller may be a frequency converter, and the start, stop and rotation speed of the motor 112 are controlled by the frequency converter. The independent control of the wind wheel 10 and the impeller 12 is realized, a user can independently select the starting, stopping and rotating speed of the wind wheel 10 and the impeller 12 according to different working conditions, different requirements of the user are met, and meanwhile, a foundation is laid for the automatic control of the wind wheel 10 and the impeller 12.

In some embodiments, the air supply mechanism 7 is arranged at the upper part of the cigarette collecting cavity. Because the smoke collecting cavity is arranged to form a negative pressure region at the periphery and the lower part of the smoke collecting cavity 8, the airflow needs to be blown out from top to bottom to surround the smoke collecting cavity 8. The opening of the air supply mechanism 7 is butted with the upper opening of the cigarette collecting cavity, so that the air flow generated by the air supply mechanism 7 can directly enter the cigarette collecting cavity. Specifically, the connection between the air supply mechanism 7 and the smoke collecting cavity can adopt a flange connection or welding mode to ensure the connection strength and the connection air tightness.

In some embodiments, the lower part of the cigarette gathering cavity is provided with an air outlet. The air outlet can be a directly open gap or a form of arranging a plurality of openings on an integrally closed structure. When the air outlet is a gap which is directly opened, the wind power is small, but the air outlet of each part is uniform; when the air outlet is in the form of a plurality of openings, the wind power is larger.

In some embodiments, as shown in fig. 6, 7, the housing 6 of the range hood comprises: the protruding portion 61, which extends outward along the surface of the housing 6 to be convex and hollow inside, is communicated with the smoke collecting cavity, and is configured to buffer and decelerate the airflow in the smoke collecting cavity, so that the air pressure is uniform.

Wherein, hold together the clearance between the structure that the chamber can establish the formation for two sheet metal covers that the shape is the same or similar, the sheet metal component that is located inboard is collection petticoat pipe 5, and its size slightly is less than the size that is located the shell 6 in the outside. The shell 6 and the smoke collecting cover 5 can be skirt-shaped integrally, the upper part is an air inlet of the smoke collecting cavity, the air supply mechanism 7 is connected, the lower part is an air outlet of the smoke collecting cavity, air flow is blown out from the air outlet of the smoke collecting cavity, and the air outlet of the smoke collecting cavity is formed in the periphery of the smoke collecting cavity 8 to form a smoke collecting air curtain 9 so as to form a negative pressure area at the smoke inlet of the smoke collecting cavity 8 and achieve effective smoking. The bulge 61 can be formed by stamping a metal plate to form a space communicated with the smoke collecting cavity, and when airflow flows through the space, the volume is suddenly increased, the pressure is reduced, the flow speed is slowed down, and the air pressure is more uniform. The air current that holds together the cigarette intracavity is 360 distributions and flows downwards, and circumference wind speed probably becomes different at the flow in-process, and when the air current passed through bellying 61, the air of the different wind speeds of circumference can be in this relatively great bellying 61 buffering speed reduction, and inhomogeneous dynamic pressure in the past is transformed into even static pressure, sends out again and holds together the cigarette chamber to reach the effect of voltage-sharing.

In some embodiments, the raised portions 61 may also be disposed on the outer sheet metal, distributed along the outer circumference of the outer sheet metal of the housing 6, for example forming a ring shape. When the range hood is arranged on the shell 6, the bulge 61 can not erode the space of the smoke collection cavity 8, so that the oil smoke is prevented from being blocked on the travelling route, and the efficiency of the range hood is reduced.

The cross section of the convex part 61 can be in a shape of smooth transition such as circular arc, ellipse and the like, so that the resistance of the airflow in the area is reduced.

In some embodiments, the smoke-holding chamber comprises: an inclined duct provided between the inclined portion 62 of the housing 6 and the smoke collection hood 5; wherein, the air outlet is arranged on the inclined air channel, and the protruding part 61 is arranged on the inclined part 62 of the shell 6. In order to reduce the overall size of the range hood to the maximum extent and increase the size of a smoke collecting area, the shell 6 and the smoke collecting hood 5 are arranged in a conical shape, and the size is gradually increased from top to bottom, so that the size of the smoke collecting area relative to the shell 6 can be increased. Because the shell 6 and the smoke collecting hood 5 are conical, the smoke collecting cavity formed by the shell is also inclined and is provided with an upper air inlet, a lower air outlet and a middle inclined air duct. The boss 61 may be provided at a middle region of the housing 6, and a cavity formed by the boss 61 communicates with the inclined air duct.

In some embodiments, the angle α of the fume collecting hood 5 to the vertical is greater than the angle β of the inclined portion 62 to the vertical. For example, 85 ° > α > β > 45 °. At the moment, the smoke collecting cavity is a structure with the volume gradually reduced from the air inlet to the air outlet, and the pressure of the airflow flowing out from the air outlet is increased, so that a stable smoke collecting air curtain is formed. Optionally, the width of the air outlet is 2mm to 10 mm. Therefore, when the airflow flows out from the air outlet, the airflow has proper pressure to form a stable smoke collecting air curtain.

In some embodiments, the position of the boss 61 satisfies the following relationship: d1 ═ k1 × d2, where d1 denotes the distance from the protrusion 61 to the boundary between the inclined portion 62 and the vertical portion 63 of the housing 6, d2 denotes the distance from the air outlet to the boundary between the inclined portion 62 and the vertical portion 63 of the housing 6, k1 is a first weighting coefficient, and k1 > 0. Alternatively, 0.5 ≦ k1 ≦ 1. In order to achieve a better pressure stabilizing effect on the air flow, the arrangement position of the protruding portion 61 is set to be positively correlated with the extension size of the housing 6, and when the extension size of the housing 6 in the oblique direction is large, correspondingly, the arrangement position of the protruding portion 61 is extended downward.

In some embodiments, the range hood further comprises: the inner cylinder 4 defining a smoke passage is connected to an upper portion of the smoke collecting cover 5, and is disposed corresponding to the vertical portion 63 of the housing 6. The inner cylinder 4 is connected with the upper part of the smoke collecting hood 5 in a seamless way, the vertical part 63 of the shell 6 is connected with the upper part of the shell 6 in a seamless way, and the size of the vertical part 63 of the shell 6 is slightly larger than that of the inner cylinder 4, so that a cavity is formed between the vertical part 63 of the shell 6 and the inner cylinder 4 and is communicated with the inclined part 62. At this time, the air blowing mechanism 7 is connected to the upper portion of the cavity, and the air flows into the inclined portion 62 of the smoke collection chamber through the cavity.

In some embodiments, the depth of the boss 61 satisfies the following relationship: h2 ═ k2 ═ h1, where h2 denotes the maximum depth of the boss 61, h1 denotes the distance between the vertical portion 63 of the outer casing 6 and the inner cylinder 4, k2 is a second weighting factor, and k2 > 0. Alternatively, 0.5 ≦ k2 ≦ 1. In order to ensure that the cavity formed by the protruding part 61 can realize better air flow pressure stabilizing effect, the depth of the protruding part 61 and the distance between the vertical part 63 and the inner cylinder 4 are set to be in positive correlation, when the distance between the vertical part 63 and the inner cylinder 4 is larger, the air flow is larger, and the size of the protruding part 61 needs to be increased to ensure the pressure stabilizing effect on the air flow.

In some embodiments, the length of the fume collecting hood 5 is greater than or equal to the length of the inclined portion 62. When the size of the inclined portion 62 is larger than that of the smoke collecting hood 5, the airflow flows out from the air outlet and is guided only by the inclined portion 62 on one side, and the direction of the smoke collecting hood 5 on the other side is not restricted, so that the airflow easily flows into the smoke collecting chamber 8, and the smoke collecting effect is not achieved. When the length of the fume collecting hood 5 is greater than or equal to the length of the inclined portion 62, the opposite is true, and the airflow flows out in the direction of the fume collecting hood 5 or in the direction away from the fume collecting chamber 8 under the guiding action of the fume collecting hood 5.

In some embodiments, the length of angled portion 62 satisfies the following relationship: l2 ═ k3 ═ L1, where L2 denotes the length of the inclined portion 62, L1 denotes the length of the smoke collecting hood 5, k3 is the third weighting coefficient, and k3 > 0. Alternatively, 0.5 ≦ k3 ≦ 1. The size of the inclined part 62 is in positive correlation with the size of the fume collecting hood 5, and the size of the fume collecting hood 5 is increased along with the increase of the length of the inclined part 62, so that the guiding effect on the airflow is ensured.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.

Herein, the term "plurality" means two or more, unless otherwise specified.