Kitchen ware fan capable of automatically removing dust

Abstract

The utility model relates to the technical field of fans, in particular to a kitchen ware fan capable of automatically removing dust, which is characterized in that a cleaning mechanism communicated with a cleaning cavity is arranged on a fan shell, the cleaning mechanism can spray cleaning liquid and clear water to an impeller assembly, the cleaning liquid can effectively clean grease on the impeller assembly, and in the rotating process of the impeller assembly, the cleaning liquid can effectively clean the grease on the impeller assembly. The cleaning liquid on the impeller assembly is thrown to the inner wall of the fan shell under the action of centrifugal force, grease, dirt and dust attached to the inner wall of the fan shell are effectively removed, finally cleaning is conducted through clean water, and the problem that in the long-time use process of an existing kitchen ware fan, grease carried in smoke is gradually accumulated and firmly attached to the surface of an impeller, and the service life of the fan is prolonged is effectively solved. And fine dust in the external environment is continuously accumulated in the kitchen ware fan, so that not only is the operation burden of the kitchen ware fan intensified, but also the rotation efficiency and the working performance of an impeller are remarkably reduced, and the exhaust effect and the service life of the kitchen ware fan are seriously influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an automatic dust-removing kitchen fan. Background Art

[0002] Kitchen blowers are a vital appliance widely used in both home and commercial kitchens. Their primary function is to effectively exhaust cooking fumes, steam, odors, and heat, ensuring a hygienic and comfortable kitchen environment. With the diversification of cooking methods and culinary cultures, cooking often produces significant amounts of fumes, which not only impacts kitchen cleanliness and air quality but also poses health risks. Therefore, kitchen blowers have become a necessity in modern kitchens. They operate quietly and offer efficient fume extraction, capturing grease and odors, thereby enhancing air purification.

[0003] As a key component in a kitchen blower, the impeller creates an air pressure differential through rapid rotation, effectively absorbing and directing smoke and odors generated during cooking into the blower. These odors are then processed and discharged outdoors, ensuring a fresh and hygienic kitchen environment. However, with time and frequent use, the grease carried in the smoke gradually accumulates and firmly adheres to the impeller surface. Furthermore, fine dust from the external environment continues to accumulate inside the blower, increasing the operating burden on the blower and significantly reducing the impeller's rotational efficiency and performance, seriously impacting the blower's exhaust efficiency and service life.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Utility Model Content

[0005] In view of the above-mentioned problem that during long-term use of the existing kitchen blower, grease carried in the smoke and dust gradually accumulates and firmly adheres to the impeller surface, and fine dust in the external environment also continuously accumulates inside the kitchen blower, which not only increases the operating burden of the kitchen blower, but also significantly reduces the rotation efficiency and working performance of the impeller, seriously affecting the exhaust effect and service life of the kitchen blower, the technical solution adopted by the present invention to solve the technical problem is:

[0006] A kitchen fan with automatic dust removal comprises a fan housing, wherein a cleaning cavity is provided in the fan housing, an impeller assembly located in the cleaning cavity, and a cleaning mechanism for cleaning the impeller assembly, wherein the cleaning mechanism is communicated with the cleaning cavity.

[0007] Furthermore, the cleaning mechanism includes a cleaning body located on the outer wall of the fan housing, and a water inlet pipe and a drain pipe respectively connected to the cleaning body. The water inlet pipe and the drain pipe both pass through the fan housing and communicate with the cleaning chamber.

[0008] Furthermore, an air outlet communicating with the cleaning chamber is provided on one side of the fan housing, and the drain pipe is located close to the air outlet.

[0009] Furthermore, the fan housing includes a first housing close to the ground and a second housing connected to the first housing, and the first housing is provided with a guide portion extending obliquely toward the impeller assembly.

[0010] Furthermore, an air inlet communicating with the cleaning chamber is provided on the first shell, and a waterproof and breathable member is provided on the air inlet.

[0011] Furthermore, the second housing is provided with a first drive motor for driving the impeller assembly to rotate, the first drive motor is provided with a drive shaft passing through the second housing and connected to the impeller assembly, and a waterproof sealing ring is provided between the drive shaft and the first drive motor.

[0012] Furthermore, an air outlet locking mechanism for closing the air outlet is provided on a side of the fan housing close to the air outlet.

[0013] Furthermore, a locking groove is provided on the fan housing, and the air outlet locking mechanism includes a second drive motor located on the outer wall of the fan housing, a rotating shaft connected to the second drive motor, and a gate connected to the rotating shaft and plugged into the locking groove.

[0014] Furthermore, the waterproof and breathable component is integrally formed on the air inlet.

[0015] Furthermore, the waterproof and breathable component is detachably arranged on the air inlet.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. The utility model provides a cleaning mechanism connected to the cleaning chamber on the fan housing. The cleaning mechanism can spray cleaning liquid and clean water onto the impeller assembly. The cleaning liquid can effectively clean the grease on the impeller assembly. In the process of the impeller assembly rotating, the cleaning liquid on the impeller assembly is thrown to the inner wall of the fan housing under the action of centrifugal force, effectively removing the grease, dirt and dust attached to the inner wall of the fan housing. Finally, it is cleaned with clean water, which effectively solves the problem that the grease carried in the smoke and dust gradually accumulates and firmly adheres to the impeller surface during the long-term use of the existing kitchen fan, and the fine dust in the external environment also continuously accumulates inside the kitchen fan, which not only increases the operating burden of the kitchen fan, but also significantly reduces the rotation efficiency and working performance of the impeller, seriously affecting the exhaust effect and service life of the kitchen fan.

[0018] 2. The setting of the cleaning mechanism can automatically clean the impeller assembly, eliminating the need for users to frequently manually disassemble and clean the inside of the fan casing and the impeller assembly, effectively reducing the user's maintenance costs and time investment, and helping to improve the practicality of the device.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural diagrams of the kitchen fan of the present utility model;

[0021] Figure 2 This is one of the exploded schematic diagrams of the kitchen fan of the present invention;

[0022] Figure 3 This is the second exploded schematic diagram of the kitchen fan of the present invention;

[0023] Figure 4 This is the second structural diagram of the kitchen fan of the present utility model;

[0024] Figure 5 for Figure 4 Schematic cross-sectional view along line AA;

[0025] Figure 6 This is the third exploded schematic diagram of the kitchen fan of the present invention. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0027] like Figures 1 to 6 The kitchen fan with automatic dust removal shown in the figure includes a fan housing 1, a cleaning chamber 2 is provided in the fan housing 1, an impeller assembly 3 located in the cleaning chamber 2, and a cleaning mechanism 4 for cleaning the impeller assembly 3, wherein the cleaning mechanism 4 is in communication with the cleaning chamber 2;

[0028] The utility model provides a cleaning mechanism connected to the cleaning chamber on the fan housing, so that the cleaning mechanism can spray cleaning liquid and clean water onto the impeller assembly, and the cleaning liquid can effectively clean the grease on the impeller assembly. In the process of rotation of the impeller assembly, the cleaning liquid on the impeller assembly is thrown toward the inner wall of the fan housing under the action of centrifugal force, effectively removing the grease, dirt and dust attached to the inner wall of the fan housing, and finally cleaning with clean water, which effectively solves the problem that in the long-term use of the existing kitchen fan, the grease carried in the smoke and dust gradually accumulates and firmly adheres to the impeller surface, and the fine dust in the external environment also continuously accumulates inside the kitchen fan, which not only increases the operating burden of the kitchen fan, but also significantly reduces the rotation efficiency and working performance of the impeller, and seriously affects the exhaust effect and service life of the kitchen fan.

[0029] Furthermore, the setting of the cleaning mechanism 4 can automatically clean the impeller assembly 3, eliminating the need for the user to frequently manually disassemble and clean the inside of the fan housing 1 and the impeller assembly 3, effectively reducing the user's maintenance costs and time investment, and helping to improve the practicality of the device.

[0030] Workflow:

[0031] When the user needs to clean the inside of the kitchen fan, the cleaning mechanism 4 is opened, and the water inlet pipe 42 on the cleaning body 41 passes through the fan housing 1 and communicates with the cleaning chamber 2. The water inlet pipe 42 sprays cleaning liquid toward the impeller assembly 3. The cleaning liquid adheres to the impeller assembly 3, and the impeller assembly 3 rotates. Under the action of centrifugal force, the cleaning liquid is thrown toward the inner wall of the kitchen fan. Then, the water inlet pipe 42 sprays clean water toward the impeller assembly 3, thereby washing the cleaning liquid on the impeller assembly 3. Similarly, under the action of centrifugal force, the clean water is thrown toward the inner wall of the kitchen fan, thereby washing the cleaning liquid on the inner wall, and then effectively cleaning the grease on the impeller assembly 3 and removing grease, dirt and dust on the inner wall of the kitchen fan. The drain pipe 43 on the cleaning body 41 passes through the fan housing 1 and communicates with the cleaning chamber 2. The washing water finally flows from the inside of the kitchen fan to the cleaning body 41 through the drain pipe 43 and is discharged to the outside.

[0032] like Figures 1 to 6 The cleaning mechanism 4 shown includes a cleaning body 41 located on the outer wall of the fan housing 1, and a water inlet pipe 42 and a drain pipe 43 respectively connected to the cleaning body 41. The water inlet pipe 42 and the drain pipe 43 both pass through the fan housing 1 and communicate with the cleaning chamber 2.

[0033] Furthermore, the cleaning body 41 is located on the outer wall of the fan housing 1 and does not occupy the internal space of the fan housing 1; secondly, the setting of the cleaning body 41 on the outer wall of the fan housing 1 is convenient for user installation or maintenance, and effectively improves the maintainability of the equipment.

[0034] Furthermore, the water inlet pipe 42 is arranged in the direction of the impeller assembly 3, which is conducive to ensuring that the cleaning liquid can fully contact and penetrate into the impeller assembly 3. Under the action of the centrifugal force generated by the rotation of the impeller assembly 3, the cleaning liquid is thrown toward the inner wall of the fan housing 1, thereby cleaning the inside of the kitchen fan. Finally, the clean water is sprayed onto the impeller assembly 3 again through the water inlet pipe 42 for flushing, effectively improving the cleaning effect inside the kitchen fan.

[0035] Optionally, in some embodiments, the water inlet pipe 42 can spray cleaning liquid in the first cleaning stage and can spray clean water in the second cleaning stage; secondly, the water inlet pipe 42 and the drain pipe 43 are simultaneously integrated on the cleaning body 41, so that the structure of the entire cleaning mechanism 4 is more compact, which helps to reduce space occupancy. In addition, the water inlet pipe 42 can spray cleaning liquid and clean water in different cleaning stages, which is beneficial to reduce the number of pipes, avoid the situation where multiple pipes pass through the fan housing 1, and help to improve the stability of the fan housing 1 structure.

[0036] Furthermore, as a preferred embodiment of the present invention but not a limitation, the water inlet pipe 42 includes a first water inlet pipe 421 for spraying cleaning liquid, and a second water inlet pipe 422 for spraying clean water. By setting the first water inlet pipe 421 and the second water inlet pipe 422, it is beneficial to ensure that the corresponding medium is used only when needed, effectively avoiding waste of resources; in addition, the first water inlet pipe 421 and the second water inlet pipe 422 are respectively set, so that the device can quickly switch or simultaneously spray clean water and spray cleaning liquid, which is beneficial to improving the flexibility of the use of the cleaning mechanism 4.

[0037] like Figures 1 to 6 As shown, one side of the fan housing 1 is provided with an air outlet 5 communicating with the cleaning chamber 2, and the drain pipe 43 is located near the air outlet 5;

[0038] Furthermore, during the rotation of the impeller assembly 3, the air flow flows toward the air outlet 5. The drain pipe 43 is located on the side close to the air outlet 5, which can utilize the airflow effect generated when the impeller assembly 3 is working, which helps to accelerate the drainage process. The airflow can drive the accumulated water in the cleaning chamber 2 to flow toward the drain pipe 43, which is beneficial to reduce the residence time of the accumulated water in the cleaning chamber 2.

[0039] like Figures 1 to 6 The fan housing 1 shown includes a first housing 11 close to the ground and a second housing 12 connected to the first housing 11. The first housing 11 is provided with a guide portion 13 extending obliquely toward the impeller assembly 3.

[0040] Optionally, in some embodiments, the first shell 11 and the second shell 12 are integrally formed.

[0041] Optionally, in some embodiments, the first shell 11 and the second shell 12 are snap-connected.

[0042] Optionally, in some embodiments, the first shell 11 and the second shell 12 are locked together.

[0043] Furthermore, as a preferred embodiment of the present invention but not a limitation thereof, the first shell 11 and the second shell 12 are threadedly connected.

[0044] Furthermore, the guide portion 13 extends obliquely from the inner wall of the fan housing 1 toward the impeller assembly 3 and has an "eight"-shaped cross-section. The guide portion 13 is arranged to extend obliquely so that the side of the guide portion 13 close to the ground forms a guide channel for guiding the accumulated water to flow toward the drain pipe 43. Under the action of the centrifugal force generated by the rotation of the impeller assembly 3, part of the clean water is thrown toward the inner wall of the fan housing 1, and slides into the guide channel under the action of gravity. Some of the clean water falls from the impeller assembly 3 to the inclined surface of the guide portion under the action of gravity, flows into the guide channel under the action of gravity, and is finally discharged from the interior of the fan housing through the drain pipe 43.

[0045] Furthermore, the guide portion 13 with an "eight"-shaped cross-section is conducive to ensuring that the accumulated water can flow smoothly along the inclined surface to the guide channel at the bottom, and finally be discharged from the interior of the fan housing 1 through the drain pipe 43, which helps to improve the drainage efficiency and avoid the accumulation of accumulated water in the fan housing 1.

[0046] like Figures 1 to 6 The first housing 11 is provided with an air inlet 6 communicating with the cleaning chamber 2, and the air inlet 6 is provided with a waterproof and breathable member;

[0047] Furthermore, the provision of the waterproof and breathable component can effectively prevent the accumulated water or fine water mist generated during the cleaning process from dripping from the cleaning chamber 2 through the air inlet 6 to the outside, which helps to keep the environment around the kitchen blower dry and clean, and effectively prevents the accumulated water from damaging the surrounding equipment.

[0048] Optionally, in some embodiments, the waterproof and breathable member is made of polyphenylene sulfide woven fabric.

[0049] Optionally, in some embodiments, the waterproof and breathable component is made of polytetrafluoroethylene fiber.

[0050] like Figures 1 to 6 The second housing 12 is provided with a first drive motor 71 for driving the impeller assembly 3 to rotate. The first drive motor 71 is provided with a drive shaft 72 that passes through the second housing 12 and is connected to the impeller assembly 3. A waterproof sealing ring 73 is provided between the drive shaft 72 and the first drive motor 71.

[0051] Furthermore, the waterproof sealing ring 73 can effectively prevent moisture and liquid from entering the first drive motor 71 from the drive shaft 72, thereby protecting the first drive motor 71 from damage caused by moisture intrusion, which is beneficial to extending the service life of the equipment and effectively ensuring the normal operation of the equipment in a humid environment.

[0052] like Figures 1 to 6 The fan housing 1 shown is provided with an air outlet locking mechanism 8 for closing the air outlet 5 on one side thereof close to the air outlet 5;

[0053] Furthermore, the air outlet locking mechanism 8 is provided so that the kitchen fan can close the air outlet 5 when cleaning the interior, preventing cleaning liquid, sewage or other pollutants from being discharged into the kitchen or other environments through the air outlet 5, which helps to keep the environment clean.

[0054] Optionally, in some embodiments, the air outlet locking mechanism 8 includes a slide groove located at the air outlet 5, a gate plate 83 located on the slide groove, and a cylinder provided on the fan housing 1. The output end of the cylinder is connected to the gate plate 83. The size of the gate plate 83 is the same as that of the air outlet 5. When the cylinder operates normally, it drives the gate plate 83 to move up and down, so that the gate plate 83 can close or open the air outlet 5.

[0055] Furthermore, as a preferred embodiment of the present invention but not a limitation, a locking groove 14 is provided on the fan housing 1, and the air outlet locking mechanism 8 includes a second drive motor 81 located on the outer wall of the fan housing 1, a rotating shaft 82 connected to the second drive motor 81, and a gate plate 83 connected to the rotating shaft 82 and plugged into the locking groove 14.

[0056] like Figures 1 to 6 The fan housing 1 is provided with a locking groove 14, and the air outlet locking mechanism 8 includes a second drive motor 81 located on the outer wall of the fan housing 1, a rotating shaft 82 connected to the second drive motor 81, and a gate 83 connected to the rotating shaft 82 and plugged into the locking groove 14;

[0057] Specifically, a locking groove 14 is provided on the fan housing 1, and the size of the gate plate 83 is the same as the size of the air outlet 5. When the second drive motor 81 operates normally, the second drive motor 81 drives the rotating shaft 82 to rotate, thereby driving the gate plate 83 to swing. The gate plate 83 can be inserted into or leave the locking groove 14, thereby opening or closing the air outlet 5.

[0058] Furthermore, by setting up a second drive motor 81, a rotating shaft 82 and a gate plate 83, the air outlet locking mechanism 8 can be fully automatic, which is conducive to simplifying the operation process and effectively reducing the complexity of manual operation. The user can quickly open or close the air outlet 5 according to actual needs.

[0059] like Figures 1 to 6 The waterproof and breathable member shown is integrally formed on the air inlet 6;

[0060] Furthermore, the waterproof and breathable component is integrally formed in the air inlet 6 so that there is no gap at the connection between the waterproof and breathable component and the air inlet 6, achieving a seamless connection, which is beneficial to reducing the risk of impurities such as moisture and dust penetrating into the interior of the kitchen appliance fan through the seams, and helps to improve the overall performance of the waterproof and breathable component.

[0061] Furthermore, the one-piece molding setting helps to simplify the installation process, effectively reduces the number of installation steps and required parts, and helps to reduce installation difficulty and cost.

[0062] like Figures 1 to 6 The waterproof and breathable member shown is detachably arranged on the air inlet 6;

[0063] Furthermore, the detachable waterproof and breathable component allows users to easily clean and maintain it, effectively preventing the accumulation of dust, oil and other substances, thereby maintaining good breathability.

[0064] Furthermore, when the waterproof breathable component is damaged or aged, the user can directly remove and replace the waterproof breathable component without having to replace the entire air inlet 6 structure, which helps to reduce maintenance costs and time.

[0065] Optionally, in some embodiments, the waterproof and breathable member is adhered to the air inlet 6 .

[0066] Optionally, in some embodiments, the waterproof and breathable member is snapped onto the air inlet 6 .

[0067] The implementation method of Example 1 is as follows:

[0068] A kitchen fan with automatic dust removal includes a fan housing 1, a cleaning chamber 2 is provided in the fan housing 1, an impeller assembly 3 is located in the cleaning chamber 2, and a cleaning mechanism 4 for cleaning the impeller assembly 3, the cleaning mechanism includes a cleaning body 41 located on the outer wall of the fan housing 1, a water inlet pipe 42 and a drain pipe 43 respectively connected to the cleaning body 41, the water inlet pipe 42 and the drain pipe 43 both pass through the fan housing 1 and communicate with the cleaning chamber 2, the water inlet pipe 42 includes a first water inlet pipe 421 for spraying cleaning liquid, and a second water inlet pipe 422 for spraying clean water. By providing the first water inlet pipe 421 and the second water inlet pipe 422, it is beneficial to ensure that the corresponding medium is used only when needed, effectively avoiding waste of resources. When the user needs to clean the inside of the kitchen fan, the cleaning mechanism 4 is turned on, and the first water inlet pipe 421 sprays cleaning liquid toward the impeller assembly. The cleaning liquid adheres to the impeller assembly 3, and the impeller assembly 3 rotates. Under the action of centrifugal force, the cleaning liquid is thrown toward the inner wall of the kitchen fan. Then, the second water inlet pipe 422 sprays clean water toward the impeller assembly 3, thereby washing the cleaning liquid on the impeller assembly 3. Similarly, under the action of centrifugal force, the clean water is thrown toward the inner wall of the kitchen fan, thereby washing the cleaning liquid on the inner wall, and then effectively cleaning the grease on the impeller assembly 3 and removing grease, dirt and dust on the inner wall of the kitchen fan. The washing water finally flows from the inside of the kitchen fan to the cleaning body 41 through the drain pipe 43 and is discharged to the outside. The fan housing 1 includes a first housing 11 and a second housing 12 connected to the first housing 11. The first housing 11 is provided with an air inlet 6 communicating with the cleaning chamber 2. A waterproof and breathable component is integrally formed on the air inlet 6. The waterproof and breathable component is made of polyphenylene sulfide woven fabric. Polyphenylene sulfide (PPS) is a new type of high-performance thermoplastic resin. The woven fabric made of polyphenylene sulfide can have good waterproof and breathable effects. Polyphenylene sulfide has extremely strong tolerance to most chemicals and solvents, and its chemical resistance is second only to polytetrafluoroethylene (PTFE). It can maintain stable performance in a variety of chemical environments, which increases the durability of the waterproof and breathable component. Polyphenylene sulfide has excellent high temperature resistance and can be used in high temperature environments without losing its performance. The setting of the waterproof and breathable component can effectively prevent the accumulated water or fine water mist generated during the cleaning process from dripping from the cleaning chamber 2 through the air inlet 6 to the outside, which helps to keep the environment around the kitchen fan dry and clean, and effectively prevent the accumulated water from damaging the surrounding equipment.An air outlet locking mechanism 8 and a locking slot 14 for closing the air outlet 5 are provided on the side of the fan housing 1 near the air outlet 5. The air outlet locking mechanism 8 includes a second drive motor 81 located on the outer wall of the fan housing 1, a rotating shaft 82 connected to the second drive motor 81, and a gate 83 connected to the rotating shaft 82 and plugged into the locking slot 14. When the second drive motor 81 is operating normally, the second drive motor 81 drives the rotating shaft 82 to rotate, thereby driving the gate 83 to swing. The gate 83 can be inserted into or leave the locking slot 14, thereby opening or closing the air outlet 5. The setting of the air outlet locking mechanism 8 enables the kitchen fan to close the air outlet 5 when cleaning the interior, preventing cleaning liquid, sewage or other pollutants from being discharged into the kitchen or other environments through the air outlet 5, which helps to keep the environment clean.

[0069] The implementation method of Example 2 is as follows:

[0070] The difference between Example 2 and Example 1 is that the water inlet pipe 42 can spray cleaning liquid and clean water. In the first cleaning stage, the water inlet pipe 42 can spray cleaning liquid, and in the second cleaning stage, the water inlet pipe 42 can spray clean water. Secondly, the water inlet pipe 42 and the drain pipe 43 are integrated on the cleaning body 41 at the same time, so that the structure of the entire cleaning mechanism 4 is more compact, which helps to reduce space occupancy. In addition, the water inlet pipe 42 can spray cleaning liquid and clean water in different cleaning stages, which is beneficial to reduce the number of pipes, avoid the situation where multiple pipes pass through the fan housing 1, and help to improve the stability of the fan housing 1 structure.

[0071] The implementation method of Example 3 is as follows:

[0072] The difference between Example 3 and Example 1 is that the waterproof and breathable component is detachably provided on the air inlet 6. The detachable waterproof and breathable component allows the user to conveniently clean and maintain it, effectively avoiding the accumulation of dust, oil and other substances, thereby maintaining good breathability.

[0073] The implementation method of Example 4 is as follows:

[0074] The difference between Example 4 and Example 1 is that the waterproof and breathable component uses polytetrafluoroethylene fiber. The polytetrafluoroethylene fiber can use polytetrafluoroethylene (PTFE) or expanded polytetrafluoroethylene (ePTFE) as the main fiber component. Polytetrafluoroethylene fiber has excellent waterproof performance, and its high-density molecular structure can effectively prevent water penetration, ensuring that the waterproof and breathable component has a good waterproof effect. The microporous structure of polytetrafluoroethylene fiber has excellent air permeability and can allow air to pass through, thereby achieving a breathable effect.

[0075] The above examples are merely used to further illustrate the technical content of the present invention for easier understanding by the reader. However, they do not limit the implementation of the present invention to these examples. Any technical extension or reinvention based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A kitchen fan with automatic dust removal, comprising a fan housing (1), characterized in that: The fan housing (1) is provided with a cleaning chamber (2), an impeller assembly (3) located in the cleaning chamber (2), and a cleaning mechanism (4) for cleaning the impeller assembly (3), wherein the cleaning mechanism (4) is in communication with the cleaning chamber (2); The cleaning mechanism (4) comprises a cleaning body (41) located on the outer wall of the fan housing (1), a water inlet pipe (42) and a drain pipe (43) respectively connected to the cleaning body (41), and the water inlet pipe (42) and the drain pipe (43) both pass through the fan housing (1) and communicate with the cleaning chamber (2); An air outlet (5) communicating with the cleaning chamber (2) is provided on one side of the fan housing (1), and the drain pipe (43) is located near the air outlet (5); The fan housing (1) comprises a first housing (11) close to the ground and a second housing (12) connected to the first housing (11); the first housing (11) is provided with a flow guide (13) extending obliquely toward the impeller assembly (3).

2. The automatic dust removal fan for kitchen appliances according to claim 1, characterized in that: An air inlet (6) communicating with the cleaning chamber (2) is provided on the first shell (11), and a waterproof and breathable member is provided on the air inlet (6).

3. The automatic dust removal fan for kitchen appliances according to claim 1, characterized in that: The second housing (12) is provided with a first drive motor (71) for driving the impeller assembly (3) to rotate. The first drive motor (71) is provided with a drive shaft (72) that passes through the second housing (12) and is connected to the impeller assembly (3). A waterproof sealing ring (73) is provided between the drive shaft (72) and the first drive motor (71).

4. The automatic dust removal fan for kitchen appliances according to claim 1, characterized in that: An air outlet locking mechanism (8) for closing the air outlet (5) is provided on a side of the fan housing (1) close to the air outlet (5).

5. The automatic dust removal fan for kitchen appliances according to claim 4, characterized in that: The fan housing (1) is provided with a locking groove (14), and the air outlet locking mechanism (8) comprises a second drive motor (81) located on the outer wall of the fan housing (1), a rotating shaft (82) connected to the second drive motor (81), and a gate (83) connected to the rotating shaft (82) and plugged into the locking groove (14).

6. The automatic dust removal fan for kitchen appliances according to claim 2, characterized in that: The waterproof and breathable component is integrally formed on the air inlet (6).

7. The automatic dust removal fan for kitchen appliances according to claim 2, characterized in that: The waterproof and breathable component is detachably arranged on the air inlet (6).

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