Smoke gathering device and kitchen appliance

Abstract

The utility model discloses a kind of smoke gathering device and kitchen appliance, it belongs to household appliance technical field, smoke gathering device includes first smoke collecting hood, second smoke collecting hood and cleaning component, first smoke collecting hood has first smoke collecting cavity, first smoke collecting hood is provided with first air inlet;Second smoke collecting hood is set in first smoke collecting cavity, multiple second air inlets that are communicated with first smoke collecting cavity are peripherally spaced apart on second smoke collecting hood, second smoke collecting hood is rotatably connected with first smoke collecting hood to make different second air inlets be communicated with outside through first air inlet;Cleaning component is set in first smoke collecting cavity, cleaning component includes cleaning brush and cleaning tank, cleaning brush is in contact with the surface of second smoke collecting hood, the bottom end of second smoke collecting hood is immersed in the cleaning fluid of cleaning tank.No.2 air inlet can be selected by rotating second smoke collecting hood, to adapt to different oil fume environment, and self-cleaning is realized by cleaning component, without disassembly and washing, reduce labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, and in particular to a smoke collection device and a kitchen appliance. Background Technology

[0002] Common kitchen appliances such as range hoods and integrated stoves have smoke extraction functions. Their smoke extraction principle is based on aerodynamics. The motor drives the impeller to rotate, which expels the air inside the volute and creates negative pressure. Atmospheric pressure then draws the air in the kitchen space, carrying the fumes, into the air inlet, and then exhausts the fumes outdoors through the duct and exhaust pipe.

[0003] Traditional range hoods typically have a fixed air inlet at the front of the smoke collection hood, which cannot accommodate varying concentrations of cooking fumes, resulting in poor smoke extraction. While some range hoods feature adjustable air inlets, allowing adjustment of smoke volume and airflow speed by changing the inlet area, these often use movable baffles to obstruct the airflow. These baffles are bulky, inconvenient to adjust, and hinder the miniaturization of the range hood. Furthermore, after prolonged use, the movable baffles accumulate significant amounts of grease, making them difficult to clean. Utility Model Content

[0004] This utility model provides a smoke collection device and a kitchen appliance to solve the technical problems of inconvenient air inlet area adjustment and difficulty in cleaning oil stains in the prior art.

[0005] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0006] A smoke collection device, comprising:

[0007] The first smoke hood has a first smoke collection chamber and a first air inlet is provided on the first smoke hood;

[0008] The second smoke hood is disposed inside the first smoke collection chamber. The second smoke hood is provided with a plurality of second air inlets that communicate with the first smoke collection chamber at intervals around its circumference. The second smoke hood is rotatably connected to the first smoke hood so that different second air inlets communicate with the outside through the first air inlet.

[0009] A cleaning assembly is disposed within the first smoke collection chamber. The cleaning assembly includes a cleaning brush and a cleaning tank. The cleaning brush is in contact with the surface of the second smoke collection hood, and the bottom end of the second smoke collection hood is immersed in the cleaning liquid in the cleaning tank.

[0010] Preferably, the system also includes a drive assembly comprising two parallel and spaced-apart drive rollers. The second smoke hood is a flexible structure and is sleeved on the outside of the two drive rollers. At least one drive roller is capable of rotating around its own axis to drive the second smoke hood to rotate.

[0011] Preferably, at least one of the drive rollers has a plurality of toothed grooves spaced apart on its outer peripheral surface, the toothed grooves extending parallel to the axis of the drive roller, and the second smoke hood has a plurality of protruding teeth spaced apart on its inner wall, the protruding teeth being inserted into the toothed grooves.

[0012] Preferably, the second air inlet is elongated and extends parallel to the axis of the drive roller.

[0013] Preferably, the width of each of the second air inlets increases in an arithmetic progression from small to large.

[0014] Preferably, the cleaning brush is located inside the cleaning tank and immersed in the cleaning solution.

[0015] Preferably, the cleaning assembly further includes a first driving member for driving the cleaning brush to rotate.

[0016] Preferably, the cleaning brush is provided in at least two sets, with at least one set of cleaning brushes located on the outside of the second smoke hood and in contact with the outer surface of the second smoke hood, and at least one set of cleaning brushes located on the inside of the second smoke hood and in contact with the inner surface of the second smoke hood.

[0017] Preferably, the second smoke hood is provided with a filter screen, which covers the second air inlet.

[0018] A kitchen appliance includes a housing and a smoke collection device as described above, wherein a first smoke collection hood is connected to the housing.

[0019] The beneficial effects of this utility model are:

[0020] The smoke collection device proposed in this utility model includes a first smoke collection hood, a second smoke collection hood, and a cleaning component. The first smoke collection hood has a first smoke collection chamber and a first air inlet. The second smoke collection hood is disposed inside the first smoke collection chamber and has multiple second air inlets that communicate with the first smoke collection chamber at intervals around its circumference. This fully utilizes the circumferential area of ​​the second smoke collection hood, allowing for a larger number of second air inlets while occupying a smaller volume. The second smoke collection hood is rotatably connected to the first smoke collection hood so that different second air inlets can be connected to the outside through the first air inlets, facilitating adjustment of the air intake area to adapt to different oil fume environments. By disposing of the cleaning component inside the first smoke collection chamber, the cleaning component includes a cleaning brush and a cleaning tank. The cleaning brush contacts the surface of the second smoke collection hood to clean its surface, achieving self-cleaning. The bottom of the second smoke collection hood is immersed in the cleaning liquid in the cleaning tank, improving the cleaning effect through soaking. Cleaning can be achieved without disassembly, reducing labor intensity. Attached Figure Description

[0021] Figure 1 This is a front view of the kitchen appliance provided in this embodiment;

[0022] Figure 2 This is a side sectional view of the kitchen appliance provided in this embodiment;

[0023] Figure 3 This is a partial structural cross-sectional view of the kitchen appliance provided in this embodiment;

[0024] Figure 4 This is a schematic diagram of the first structure of the second smoke collection hood provided in this embodiment;

[0025] Figure 5 This is a schematic diagram of the second structure of the second smoke collection hood provided in this embodiment;

[0026] Figure 6 This is a schematic diagram of the second smoke hood provided in this embodiment cooperating with a driving component;

[0027] Figure 7 This is a schematic diagram of the second smoke hood provided in this embodiment cooperating with another driving component;

[0028] Figure 8 This is a side view of the second smoke hood and the drive assembly provided in this embodiment.

[0029] In the picture:

[0030] 100. Casing; 200. Main fan; 300. Oil cup;

[0031] 10. First smoke hood; 11. First smoke collection chamber; 12. First air inlet;

[0032] 20. Second smoke hood; 21. Second air inlet; 22. Protruding teeth;

[0033] 30. Cleaning assembly; 31. Cleaning brush; 32. Cleaning tank;

[0034] 40. Drive assembly; 41. Drive roller; 42. Tooth groove. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] See Figures 1 to 8 This embodiment provides a kitchen appliance, which can be a range hood, integrated stove, or integrated range hood, or other household appliances with smoke extraction functions. The kitchen appliance includes a housing 100 and a smoke collection device. The smoke collection device includes a first smoke collection hood 10, which has a first smoke collection chamber 11 and a first air inlet 12. The first smoke collection hood 10 is connected to the housing 100. A main fan 200 is installed inside the housing 100 or the first smoke collection hood 10 to extract cooking fumes. The first air inlet 12 connects to the outside and the first smoke collection chamber 11, allowing cooking fumes to enter the first smoke collection chamber 11 from the first air inlet 12 and be discharged through the smoke guide channel within the housing 100. Exemplarily, the housing 100 is located on top of the first smoke collection hood 10, and the main fan 200 is located inside the housing 100.

[0040] This embodiment uses a range hood as an example, specifically a side-suction range hood. A first air inlet 12 is disposed on the front side panel of the first smoke collection hood 10, and the front side panel is set at an angle relative to the horizontal plane. Exemplarily, the front side panel extends downwards at an angle from front to back. The kitchen appliance also includes an oil cup 300, which is disposed on the lower side of the first smoke collection hood 10 and located at the rear end of the first smoke collection hood 10.

[0041] The shape and number of the first air inlets 12 are not limited here. For example, the first air inlet 12 is elongated and extends along the left-right direction of the first smoke hood 10. Alternatively, the first air inlet 12 may be circular, rectangular, elliptical, or other shapes. One or more first air inlets 12 may be provided. For example, multiple elongated first air inlets 12 are spaced apart along the vertical direction of the first smoke hood 10. Alternatively, multiple circular first air inlets 12 are arranged in a matrix on the first smoke hood 10.

[0042] The smoke collection device also includes a second smoke collection hood 20 and a cleaning assembly 30. The second smoke collection hood 20 is disposed inside the first smoke collection chamber 11. The second smoke collection hood 20 is provided with a plurality of second air inlets 21 that communicate with the first smoke collection chamber 11 at intervals around its circumference. The second smoke collection hood 20 is rotatably connected to the first smoke collection hood 10 so that different second air inlets 21 communicate with the outside through the first air inlet 12. The cleaning assembly 30 is disposed inside the first smoke collection chamber 11. The cleaning assembly 30 includes a cleaning brush 31 and a cleaning tank 32. The cleaning brush 31 contacts the surface of the second smoke collection hood 20, and the bottom end of the second smoke collection hood 20 is immersed in the cleaning liquid in the cleaning tank 32.

[0043] The second fume hood 20 is provided with multiple second air inlets 21 that communicate with the first fume chamber 11 at intervals around its circumference. By making full use of the circumferential area of ​​the second fume hood 20, not only can a large number of second air inlets 21 be provided, but it also occupies a small volume. The second fume hood 20 is rotatably connected to the first fume hood 10 so that different second air inlets 21 can be connected to the outside through the first air inlet 12, which makes it easy to adjust the air intake area to adapt to different oil fume environments.

[0044] In some embodiments, at least two second air inlets 21 have different air intake areas. By rotating the second fume hood 20, different air intake areas of the second air inlets 21 can be selected to align with the first air inlet 12, thereby adjusting the air intake area to adapt to different oil fume environments. For example, the air intake areas of each second air inlet 21 are different. When a second air inlet 21 is aligned with the first air inlet 12, the second air inlet 21 can be completely projected within the first air inlet 12, and the corresponding air intake area is the area of ​​the second air inlet 21.

[0045] In some embodiments, the air intake area of ​​each second air inlet 21 is the same. By rotating the second smoke hood 20, the second air inlet 21 can be aligned with or offset from the first air inlet 12 to adjust the air intake area connected to the outside world and adapt to different oil fume environments.

[0046] For example, the second air inlets 21 are adjusted to connect to the outside based on the concentration of cooking fumes. For instance, the air inlet areas of each second air inlet 21, from smallest to largest, are A1, A2, A3, A4, and A5. When the machine is turned on, the second air inlet 21 with an air inlet area of ​​A1 connects to the outside. If the concentration of cooking fumes is greater than or equal to the first set concentration value but less than the second set concentration value, the air inlet area is increased by one level, that is, by rotating the second fume hood 20 to connect the second air inlet 21 with an air inlet area of ​​A2 to the outside. If the concentration of cooking fumes is greater than or equal to the second set concentration value, the air inlet area is increased by two levels, that is, by rotating the second fume hood 20 to connect the second air inlet 21 with an air inlet area of ​​A3 to the outside. And so on, or other control processes can be set according to actual needs, which will not be elaborated here.

[0047] The shape of the second smoke hood 20 can be set according to actual needs, such as cylindrical or oval. In this embodiment, the second smoke hood 20 is a flexible structure and is oval. Specifically, the smoke collection device also includes a drive assembly 40, which includes two parallel and spaced drive rollers 41. The second smoke hood 20 is a flexible structure and is sleeved on the outside of the two drive rollers 41. At least one drive roller 41 can rotate around its own axis to drive the second smoke hood 20 to rotate. By setting the second smoke hood 20 as a flexible structure, and using the two drive rollers 41 to provide support and power to the second smoke hood 20, the second smoke hood 20 can achieve a rotational movement similar to a transmission belt.

[0048] The material of the second smoke hood 20 can be any existing material, such as soft plastic or rubber, without limitation, as long as it can rotate under the driving action of the drive roller 41. The drive roller 41 can be driven by a motor, which can directly or indirectly drive one of the drive rollers 41 to rotate, while the other drive roller 41 acts as a driven roller, which will not be described in detail here.

[0049] In some embodiments, the drive assembly 40 further includes a tension roller, which can be disposed on the inner side of the second smoke hood 20 or on the outer side of the second smoke hood 20. The tension roller abuts against the surface of the second smoke hood 20 to tension the second smoke hood 20 and prevent the second air inlet 21 from being obstructed due to deformation of the second smoke hood 20.

[0050] The second smoke hood 20 has multiple second air inlets 21 spaced circumferentially. As the second smoke hood 20 rotates, different second air inlets 21 connect with the first air inlet 12, allowing the second air inlets 21 to connect to the outside through the first air inlet 12. To ensure controllable air intake area, only one second air inlet 21 connects with the first air inlet 12 at a time. The first air inlet 12 should not obstruct the second air inlets 21; therefore, the largest second air inlet 21 can be set so that it is completely projected within the first air inlet 12.

[0051] The second smoke hood 20 is disposed within the first smoke collection chamber 11. Alternatively, the outer wall of the second smoke hood 20 may fit against the inner wall of the first smoke hood 10 on the side where the first air inlet 12 is located, to prevent air leakage from the edge of the first air inlet 12. Alternatively, a sealing ring may be provided around the circumference of the first air inlet 12 on the inner wall of the first smoke hood 10, with the outer wall of the second smoke hood 20 abutting against the sealing ring. This provides a seal while reducing the contact area between the second smoke hood 20 and the first smoke hood 10, thus reducing the friction experienced by the second smoke hood 20 during rotation and allowing for smoother rotation.

[0052] In other embodiments, two second air inlets 21 may be connected to the first air inlet 12 as needed, or a portion of one second air inlet 21 may be connected to the first air inlet 12, while the remaining portion may be blocked by the first smoke hood 10.

[0053] The air intake area of ​​the second air intake 21 can be set according to actual needs. The more types of air intake areas the second air intake 21 has, the more choices there are, and the more oil fume environments it can adapt to. Optionally, the air intake areas of each second air intake 21 are different. For example, if there are N second air intakes 21, then there are N types of air intake areas.

[0054] In this embodiment, the first air inlet 12 is elongated and extends along the left-right direction of the first smoke hood 10, and the second air inlet 21 is elongated and extends along the left-right direction of the second smoke hood 20. Specifically, the second air inlet 21 is elongated and extends parallel to the axis of the drive roller 41.

[0055] The lengths of the various second air inlets 21 can be the same or different. In order to facilitate the differentiation of the air intake area of ​​each second air inlet 21, in this embodiment, the lengths of the various second air inlets 21 are the same, and the air intake areas are different for second air inlets 21 with different widths. The wider the second air inlet 21, the larger the air intake area.

[0056] For example, the width of each second air inlet 21 increases in an arithmetic sequence from small to large, which facilitates processing and production. For example, the widths of each second air inlet 21 are 1cm, 1.5cm, 2cm, 2.5cm, 3cm, 3.5cm, 4cm, etc.

[0057] The second air inlets 21 can be distributed in order of increasing air intake area, or they can be arranged randomly. For example, the second air inlets 21 are distributed in order of increasing air intake area, which makes it easy to adjust the connection between the required second air inlets 21 and the first air inlet 12 according to the rotation angle of the drive roller 41.

[0058] The drive roller 41 can drive the second smoke hood 20 to rotate clockwise or counterclockwise. For example, the drive roller 41 can drive the second smoke hood 20 to rotate clockwise, and the second air inlets 21 are distributed in a counterclockwise direction according to the air inlet area from small to large. As the second smoke hood 20 rotates, the air inlet area gradually increases. When the second smoke hood 20 rotates one revolution, the air inlet area switches from the maximum to the minimum.

[0059] At least one drive roller 41 has a plurality of grooves 42 spaced apart on its outer peripheral surface. The grooves 42 extend parallel to the axis of the drive roller 41. The inner wall of the second smoke hood 20 has a plurality of protruding teeth 22 spaced apart, which are inserted into the grooves 42. The protruding teeth 22 cooperate with the grooves 42 to limit the movement of the second smoke hood 20 and prevent it from slipping during rotation.

[0060] To avoid the second air inlet 21, the protruding teeth 22 can be set at both ends of the second smoke hood 20 in the length direction where the second air inlet 21 is not set.

[0061] In some embodiments, the outer peripheral surfaces of both drive rollers 41 are provided with toothed grooves 42, such as Figure 6 As shown, the two drive rollers 41 can adopt the same structure. In some embodiments, the outer peripheral surface of one drive roller 41 is provided with a toothed groove 42, and the outer peripheral surface of the other drive roller 41 is a cylindrical surface, such as... Figure 7 As shown, to avoid interference between the protruding teeth 22 and the drive roller 41, the drive roller 41 can be configured as a stepped structure to avoid the protruding teeth 22. In other embodiments, an anti-slip layer can be provided on the surface of the drive roller 41 to prevent the second smoke hood 20 from slipping and to ensure the stability of the movement of the second smoke hood 20.

[0062] In some embodiments, the second fume hood 20 is provided with a filter screen, which covers the second air inlet 21. The filter screen filters the fumes to prevent excessive oil mist from entering the first fume collection chamber 11. In some embodiments, the first fume hood 10 is provided with a filter screen, which covers the first air inlet 12. The filter screen filters the fumes to prevent excessive oil mist from entering the first fume collection chamber 11.

[0063] By placing the cleaning component 30 inside the first smoke collection chamber 11, the cleaning component 30 includes a cleaning brush 31 and a cleaning tank 32. The cleaning brush 31 contacts the surface of the second smoke collection hood 20 to clean the surface of the second smoke collection hood 20, achieving self-cleaning. The bottom end of the second smoke collection hood 20 is immersed in the cleaning liquid in the cleaning tank 32. The cleaning effect is improved by soaking. Cleaning can be achieved without disassembly, reducing labor intensity.

[0064] Since drive rollers 41 are provided at both ends of the second smoke hood 20, the drive roller 41 located at the bottom of the second smoke hood 20 is immersed in the cleaning liquid. In some embodiments, the cleaning brush 31 is located in the cleaning tank 32 and immersed in the cleaning liquid. By immersing the cleaning brush 31 in the cleaning liquid, the oil stains cleaned by the cleaning brush 31 are directly left in the cleaning liquid, avoiding the accumulation of stains on the cleaning brush 31 and ensuring the cleanliness of the surface of the second smoke hood 20. In some embodiments, the cleaning brush 31 is located outside the cleaning tank 32, and the rotation of the second smoke hood 20 causes the part cleaned by the cleaning brush 31 to pass through the cleaning liquid, which also ensures the cleanliness of the surface of the second smoke hood 20.

[0065] In this embodiment, the cleaning assembly 30 further includes a first driving member, which drives the cleaning brush 31 to rotate. During cleaning, the second smoke hood 20 rotates, and the cleaning brush 31 also rotates, causing the cleaning brush 31 to perform friction cleaning on the surface of the second smoke hood 20. By setting the cleaning brush 31 to rotate, the cleaning brush 31 is subjected to uniform force, and the cleaning effect is improved. In other embodiments, the cleaning brush 31 can be fixedly installed. During cleaning, the second smoke hood 20 rotates, and the relative movement between the second smoke hood 20 and the cleaning brush 31 enables the cleaning brush 31 to perform friction cleaning on the surface of the second smoke hood 20. The first driving member can be a motor.

[0066] In some embodiments, at least two sets of cleaning brushes 31 are provided. At least one set of cleaning brushes 31 is located on the outer side of the second smoke hood 20 and in contact with the outer surface of the second smoke hood 20, and at least one set of cleaning brushes 31 is located on the inner side of the second smoke hood 20 and in contact with the inner surface of the second smoke hood 20. By providing cleaning brushes 31 on both the inner and outer sides of the second smoke hood 20, the cleaning is more comprehensive and the cleaning effect is better.

[0067] The cleaning brush 31 extends along the length of the second smoke hood 20. Optionally, the length of the cleaning brush 31 is greater than the length of the second smoke hood 20 so as to thoroughly clean the surface of the second smoke hood 20.

[0068] The bottom of the cleaning tank 32 is equipped with a drain outlet, which is connected to the outside via a pipe. This pipe can be connected to a sewer or a waste liquid collector, etc. A drain valve is installed on the pipe. The drain valve can be opened via a user control button.

[0069] A liquid inlet pipe is provided at the upper part of the cleaning tank 32 for injecting cleaning fluid into the cleaning tank 32. A switch valve is installed on the liquid inlet pipe. Optionally, a liquid level sensor is installed inside the cleaning tank 32 to control the closing of the switch valve. The switch valve can be opened via a user control button or a switch.

[0070] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A smoke-collecting device, characterized in that, include: The first smoke hood (10) has a first smoke collection chamber (11) and a first air inlet (12) is provided on the first smoke hood (10); The second smoke hood (20) is disposed inside the first smoke collection chamber (11). The second smoke hood (20) is provided with a plurality of second air inlets (21) that communicate with the first smoke collection chamber (11) at intervals around the circumference. The second smoke hood (20) is rotatably connected to the first smoke hood (10) so that different second air inlets (21) communicate with the outside through the first air inlet (12). A cleaning assembly (30) is disposed in the first smoke collection chamber (11). The cleaning assembly (30) includes a cleaning brush (31) and a cleaning tank (32). The cleaning brush (31) is in contact with the surface of the second smoke collection hood (20), and the bottom end of the second smoke collection hood (20) is immersed in the cleaning liquid in the cleaning tank (32).

2. The smoke-collecting device according to claim 1, characterized in that, It also includes a drive assembly (40), which includes two drive rollers (41) arranged in parallel and spaced apart. The second smoke hood (20) is a flexible structure and is sleeved on the outside of the two drive rollers (41). At least one of the drive rollers (41) can rotate around its own axis to drive the second smoke hood (20) to rotate.

3. The smoke-collecting device according to claim 2, characterized in that, At least one of the drive rollers (41) has a plurality of toothed grooves (42) spaced apart on its outer peripheral surface. The toothed grooves (42) extend parallel to the axis of the drive roller (41). The inner wall of the second smoke hood (20) has a plurality of protruding teeth (22) spaced apart. The protruding teeth (22) are inserted into the toothed grooves (42).

4. The smoke-collecting device according to claim 2, characterized in that, The second air inlet (21) is elongated and extends parallel to the axis of the drive roller (41).

5. The smoke-collecting device according to claim 4, characterized in that, The width of each of the second air inlets (21) increases in an arithmetic sequence from small to large.

6. The smoke-collecting device according to claim 1, characterized in that, The cleaning brush (31) is located in the cleaning tank (32) and immersed in the cleaning solution.

7. The smoke-collecting device according to claim 1, characterized in that, The cleaning assembly (30) further includes a first driving member for driving the cleaning brush (31) to rotate.

8. The smoke-collecting device according to claim 1, characterized in that, The cleaning brush (31) is provided in at least two sets. At least one set of the cleaning brush (31) is located on the outside of the second smoke hood (20) and in contact with the outer surface of the second smoke hood (20). At least one set of the cleaning brush (31) is located on the inside of the second smoke hood (20) and in contact with the inner surface of the second smoke hood (20).

9. The smoke-collecting device according to any one of claims 1-8, characterized in that, The second smoke hood (20) is provided with a filter screen, which covers the second air inlet (21).

10. A kitchen appliance, characterized in that, Includes a housing (100) and a smoke collection device according to any one of claims 1-9, wherein the first smoke collection hood (10) is connected to the housing (100).

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