Cleaning device and range hood

Abstract

The present invention provides a cleaning device and a range hood, comprising: a housing with a filter cavity built therein, the filter cavity being connected to an air inlet and an air outlet; a fan arranged in the filter cavity, a rotating fan blade being connected to the main shaft of the fan, and a filter structure being arranged along the circumference of the rotating fan blade; a first cleaning structure, arranged on the inner side of the rotating fan blade, having a working position abutting against the filter structure, suitable for cleaning the filter structure; a second cleaning structure, including a spray structure, arranged toward the filter structure, suitable for cleaning the filter structure. This arrangement can fully clean the filter structure in the filter cavity from multiple ways and multiple angles, and mutually assist each other to jointly improve the cleanliness of the filter structure, thereby avoiding the defect of reduced filtration efficiency due to excessive accumulation of oil stains in the filter structure, and improving the service life and working efficiency of the filter structure.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a cleaning device and a range hood. Background Art

[0002] The existing range hoods are firstly discharged to a public flue through an exhaust pipe, and then discharged to the outside through the public flue.

[0003] Nowadays, most range hoods use porous oil nets to filter and intercept oil fumes. However, although most of the oil fumes are isolated in this structure, some oil fume particles still enter the air duct and are discharged to the outside. After a long time, oil particles will adhere to the motor and impeller, causing the motor load to increase and the speed to decrease. This not only reduces the suction power of the range hood and affects the life of the entire machine, but also aggravates the outdoor environmental pollution.

[0004] Therefore, it is necessary to install a filter on the impeller to prevent oil particles from adhering to the motor and impeller. During the rotation, the filter will mechanically collide with large oil droplets and oil particles, thereby blocking them in the filter. However, long-term use will cause oil to accumulate on the filter, and the contact area between the filter and the oil fume will be reduced, and the oil fume that can be filtered will become less and less. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the filter net accumulates too much oil stains, resulting in reduced filtering efficiency, thereby providing a cleaning device and a range hood.

[0006] The present invention provides a cleaning device, comprising: a housing, with a filter cavity built therein, the filter cavity being connected with an air inlet and an air outlet;

[0007] A fan is arranged in the filter chamber, a main shaft of the fan is connected with a rotating fan blade, and a filter structure is arranged along the circumference of the rotating fan blade;

[0008] A first cleaning structure, disposed inside the rotating fan blade, has a working position abutting against the filter structure, and is suitable for cleaning the filter structure;

[0009] The second cleaning structure includes a spray structure, which is arranged toward the filter structure and is suitable for cleaning the filter structure.

[0010] The first cleaning structure comprises: a rotating shaft, which is coaxially arranged with the main shaft of the fan and is suitable for relative rotation with the filter structure;

[0011] A plurality of cleaning shafts are radially arranged on the circumference of the rotating shaft, and cleaning parts are arranged at the ends thereof. The cleaning parts have a working position for abutting against and cleaning the filter structure.

[0012] The first cleaning structure also includes: a connecting piece, which is sleeved on the outside of the main shaft of the fan, connects the rotating shaft and the main shaft, and is provided with a sliding bearing fixed to the main shaft;

[0013] The auxiliary motor is connected to the rotating shaft and is suitable for driving the rotating shaft to rotate relative to the main shaft.

[0014] The cleaning shaft comprises: a rotating shaft, movably connected to the rotating shaft and suitable for rotating along its own axis;

[0015] The telescopic shaft has one end connected to the rotating shaft and the other end fixedly connected to the cleaning portion, and is telescopically arranged in the extending direction of the rotating shaft.

[0016] The first cleaning structure further includes: a thrust portion, disposed between the auxiliary motor and the rotating shaft;

[0017] A connecting rod, arranged inside the rotating shaft, and connected to the thrust portion and the connecting member respectively;

[0018] The elastic member is arranged on the peripheral side of the connecting rod, and its two ends are respectively connected to the thrust portion and the rotating shaft, and is suitable for controlling the axial movement of the rotating shaft.

[0019] The second cleaning structure includes: a water tank, arranged outside the filter chamber;

[0020] A water delivery pipe is connected to a water pump, one end of which is arranged inside the water tank, and the other end of which is extended into the filter cavity and connected to a cleaning nozzle, and the cleaning nozzle is arranged toward the filter structure.

[0021] The second cleaning structure also includes:

[0022] A water outlet pipe is vertically arranged at the bottom of the filter chamber;

[0023] The sewage tank is arranged in the shell and is closely arranged with the shell, is communicated with the end of the water outlet pipe, and is provided with a drain port on the shell.

[0024] A first filter is arranged on the air inlet.

[0025] The filter chamber is arranged in a volute shape, the air outlet is arranged at the end of the gas flow direction in the filter chamber, and an air regulating device is arranged on the air outlet, and the air regulating device is suitable for adjusting the air output of the air outlet.

[0026] The air regulating device comprises: an air regulating plate, which is arranged in an arc shape in the filter cavity and separates the air outlet;

[0027] An adjustable air grille connects the filter chamber and the air adjusting plate, and is suitable for blocking at least part of the gas and adjusting the gap between the air adjusting plate and the inner wall of the filter chamber;

[0028] The filter substrate is arranged in the filter cavity and is fixedly connected to one end of the air regulating piece.

[0029] The filter substrate is arranged on the bottom side of the filter cavity along the vertical direction, is fixedly connected to the filter screen structure, and is arranged with the same material.

[0030] The cleaning device also includes a controller, which is communicatively connected with the fan, the regulating wind grille, the water pump and the elastic member respectively.

[0031] The present invention also provides a range hood comprising the above-mentioned cleaning device.

[0032] The technical solution of the present invention has the following advantages:

[0033] 1. A cleaning device provided by the present invention comprises: a shell having a filter chamber built therein, wherein the filter chamber is connected to an air inlet and an air outlet; a fan arranged in the filter chamber, a rotating fan blade being connected to the main shaft of the fan, and a filter structure being arranged along the circumference of the rotating fan blade; a first cleaning structure, arranged on the inner side of the rotating fan blade, having a working position abutting against the filter structure, and being suitable for cleaning the filter structure; a second cleaning structure, comprising a spray structure, arranged toward the filter structure, and being suitable for cleaning the filter structure.

[0034] By arranging a first cleaning structure and a second cleaning structure in the filter cavity, the first cleaning structure abuts against the filter structure in the working position, and cleans the filter structure by scrubbing or the like, and the second cleaning structure can spray water, cleaning liquid or high-temperature steam or other cleaning media to the filter structure by arranging a spray structure, thereby cleaning the filter. In this way, the filter structure in the filter cavity can be fully cleaned in multiple ways and from multiple angles, and they assist each other in improving the cleanliness of the filter structure, thereby avoiding the defect of reduced filtration efficiency due to excessive accumulation of oil stains in the filter structure, and improving the service life and working efficiency of the filter structure.

[0035] 2. The cleaning device provided by the present invention, the first cleaning structure includes: a rotating shaft, which is coaxially arranged with the main shaft of the fan and is suitable for relative rotation with the filter structure; a plurality of cleaning shafts, which are radially arranged on the circumference of the rotating shaft, and a cleaning part is provided at the end, and the cleaning part has a working position that abuts and cleans the filter structure.

[0036] The rotating shaft and the filter structure rotate relative to each other, so that the cleaning part on the cleaning shaft arranged on the circumferential side of the rotating shaft can rub against the filter structure relative to each other in the working position, fully scrub the filter structure, and effectively remove the oil stains adhering to the filter structure. In addition, multiple cleaning shafts are radially arranged on the circumferential side of the rotating shaft, which increases the cleaning frequency of the cleaning part on the filter structure and improves the cleaning efficiency of the filter structure.

[0037] 3. The cleaning device provided by the present invention, the cleaning shaft includes: a rotating shaft, which is movably connected to the rotating shaft and is suitable for rotating along its own axis; a telescopic shaft, one end of which is connected to the rotating shaft and the other end is fixedly connected to the cleaning part, and can be telescopically arranged in the extension direction of the rotating shaft.

[0038] By setting a rotating shaft, the cleaning part can rotate along the circumference of the rotating shaft, thereby enhancing the cleaning effect of the abutment position between the cleaning part and the filter structure, and can effectively remove stubborn oil stains adhering to the filter structure. The setting of the telescopic shaft can reduce the volume of the first cleaning structure by contraction, which is convenient for the installation and assembly of the first cleaning structure and provides installation space for other structures. On the other hand, such a setting is convenient for cleaning in the extended state, and can also avoid contact with the filter structure in the contracted state, so that the fan can operate smoothly.

[0039] 4. The cleaning device provided by the present invention, the first cleaning structure also includes: a thrust portion, arranged between the auxiliary motor and the rotating shaft; a connecting rod, arranged on the inner side of the rotating shaft, and respectively connected to the thrust portion and the main shaft; an elastic member, arranged on the peripheral side of the connecting rod, with both ends respectively connected to the thrust portion and the rotating shaft, suitable for controlling the axial movement of the rotating shaft.

[0040] By arranging an elastic member, a connecting rod and a thrust portion, the rotating shaft can be sleeved on the connecting rod. On the one hand, by arranging an elastic member to connect the thrust portion and the rotating shaft, the rotating shaft can move axially along the connecting rod, and the cleaning portion on the rotating shaft can contact a larger area of ​​the filter structure, thereby achieving complete cleaning of a larger area of ​​the filter structure. On the other hand, the cleaning position of the cleaning portion can be controlled by controlling the telescopic length of the elastic member, thereby achieving accurate cleaning of dirt at different positions on the filter structure.

[0041] 5. The cleaning device provided by the present invention, the second cleaning structure includes: a water tank, arranged outside the filter cavity; a water pipe, connected to a water pump, one end of which is arranged inside the water tank, and the other end is extended into the filter cavity and connected to a cleaning nozzle, and the cleaning nozzle is arranged toward the filter structure.

[0042] A second cleaning structure is set up to clean the filter structure by water washing and spraying, which improves the cleaning efficiency and cleaning effect, and assists in cleaning the first cleaning structure. When cleaning the first cleaning structure, water washing and spraying can be performed first to soak the filter structure to avoid the appearance of flying dust or splashing of oil. Water washing and spraying can also be performed during the washing process of the first cleaning structure to flush away the dirt cleaned by the first cleaning structure, thereby achieving complete cleaning of the filter structure.

[0043] 6. The cleaning device provided by the present invention has a first filter screen disposed on the air inlet.

[0044] The first filter is arranged at the air inlet. On the one hand, it can preliminarily filter the large particle pollutants in the oil smoke entering the shell, reduce the content of pollutants that are difficult to clean in the filter structure, and reduce the difficulty of cleaning the first cleaning device and the second cleaning device. On the other hand, the first filter is arranged at the air inlet to facilitate the staff to install and remove it for effective cleaning.

[0045] 7. The cleaning device provided by the present invention, the air regulating device includes: an air regulating plate, which is arranged in an arc shape in the filter cavity and separates the air outlet; an adjusting wind grid, connecting the filter cavity and the air regulating plate, suitable for blocking at least part of the gas and adjusting the gap between the air regulating plate and the inner wall of the filter cavity; a filter substrate, which is arranged in the filter cavity and fixedly connected to one end of the air regulating plate.

[0046] The setting of the air regulating plate separates the air outlet, and the adjusting wind grille can adjust the extension length and also play a role in wind blocking. The adjusting wind grille is connected between the filter chamber and the air regulating plate to control the distance between the air regulating plate and one side wall of the filter chamber and play a certain blocking role on the flowing airflow in the space on this side. In this way, the size of the air outlet and its air output can be controlled by adjusting the wind grille. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A schematic diagram of the internal structure of a cleaning device provided in a first embodiment of the present invention;

[0049] Figure 2 for Figure 1 A schematic structural diagram of the cleaning device from another angle;

[0050] Figure 3 for Figure 1 A schematic diagram of the internal structure of the cleaning device shown;

[0051] Figure 4 for Figure 1 A schematic structural diagram of a portion of a first cleaning structure in the cleaning device shown;

[0052] Description of reference numerals:

[0053] 1-shell; 11-filter chamber; 12-air inlet; 121-first filter screen; 13-air outlet; 2-fan; 21-main shaft; 22-rotating fan blade; 23-filter screen structure; 3-first cleaning structure; 31-rotating shaft; 321-rotating shaft; 322-telescopic shaft; 323-cleaning part; 33-connecting piece; 34-auxiliary motor; 35-thrust part; 36-elastic piece; 4-second cleaning structure; 41-water tank; 42-water pipe; 43-water pump; 44-cleaning nozzle; 45-water outlet pipe; 46-sewage tank; 5-air regulating device; 51-air regulating sheet; 52-adjusting wind grid; 53-filter substrate; 6-controller. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] like Figure 1 - Figure 4 The present embodiment provides a cleaning device, including: a shell 1, a fan 2, a first cleaning structure 3 and a second cleaning structure 4.

[0059] The housing 1 is square in shape and has a filter chamber 11 therein. The filter chamber 11 is connected with an air inlet 12 and an air outlet 13. The air inlet 12 is arranged at an upper side of the housing 1, and the air outlet 13 is arranged at the top and bottom sides of the housing 1. In this embodiment, the filter chamber 11 is volute-shaped.

[0060] The fan 2 is arranged in the filter chamber 11, and a ring-shaped rotating fan blade 22 is connected to the main shaft 21 of the fan 2. A filter structure 23 is arranged along the inner side of the rotating fan blade 22. As a convertible embodiment, the filter structure 23 can also be arranged inside and outside the rotating fan blade 22. Through the rotation of the fan 2 and the rotating fan blade 22, the gas in the filter chamber 11 can flow, and flow in from the air inlet 12 and flow out from the air outlet 13. The air outlet 13 is arranged at the end of the gas flow direction in the filter chamber 11. The air outlet 13 is provided with an air regulating device 5, and the air regulating device 5 is suitable for adjusting the air output of the air outlet 13.

[0061] The first cleaning structure 3 is arranged on the inner side of the rotating fan blade 22, and has a working position abutting against the filter structure 23, and can clean the filter structure 23 by friction cleaning; the second cleaning structure 4 includes a spray structure, which is arranged toward the filter structure 23, and can clean the filter structure 23 by water washing.

[0062] By arranging the first cleaning structure 3 and the second cleaning structure 4 in the filter chamber 11, the first cleaning structure abuts against the filter structure 23 in the working position, and cleans the filter structure 23 by scrubbing or the like, and the second cleaning structure can spray water, cleaning liquid or high-temperature steam or other cleaning media to the filter structure 23 by arranging a spray structure, thereby cleaning the filter. In this way, the filter structure 23 in the filter chamber 11 can be fully cleaned from multiple methods and multiple angles, and the two structures assist each other in improving the cleanliness of the filter structure, thereby avoiding the defect of reduced filtration efficiency due to excessive accumulation of oil stains in the filter structure, and improving the service life and working efficiency of the filter structure 23.

[0063] The first cleaning structure 3 includes a rotating shaft 31 and a plurality of cleaning shafts.

[0064] The rotating shaft 31 is coaxially arranged with the main shaft 21 of the fan 2, and can rotate relative to the filter structure 23. In this embodiment, the rotating shaft 31 and the main shaft 21 of the fan 2 move relatively independently. Multiple cleaning shafts are radially arranged around the rotating shaft 31, and a cleaning part 323 is arranged at the end. The cleaning part 323 has a working position for abutting and cleaning the filter structure 23. In this embodiment, the cleaning part 323 is arranged in a brush shape. As a convertible embodiment, the cleaning part 323 can be designed to be sponge-shaped, or the cleaning part 323 can be designed to be wavy.

[0065] The rotating shaft 31 and the filter structure 23 rotate relative to each other, so that the cleaning portion 323 on the cleaning shaft arranged on the side of the rotating shaft 31 can rub against the filter structure 23 relative to each other in the working position, fully scrub the filter structure 23, and effectively remove the oil stains adhering to the filter structure 23. In addition, a plurality of cleaning shafts are radially arranged on the side of the rotating shaft 31, which increases the cleaning frequency of the cleaning portion 323 on the filter structure 23 and improves the cleaning efficiency of the filter structure 23.

[0066] The first cleaning structure 3 also includes a connecting member 33 and an auxiliary motor 34. The connecting member 33 is sleeved on the outside of the main shaft 21 of the fan 2, connecting the rotating shaft 31 and the main shaft 21, and is provided with a sliding bearing fixed to the main shaft 21; the auxiliary motor 34 is connected to the rotating shaft 31, and can drive the rotating shaft 31 to rotate relative to the main shaft 21. The setting of the connecting member 33 can enable the auxiliary motor 34 and the fan 2 to achieve independent operation while ensuring the coaxiality.

[0067] The cleaning shaft includes a rotating shaft 321 and a telescopic shaft 322 .

[0068] The rotating shaft 321 is movably connected to the rotation shaft 31 and can rotate along its own central axis; one end of the telescopic shaft 322 is connected to the rotating shaft 321, and the other end is fixedly connected to the cleaning part 323, and can be telescopically arranged in the extension direction of the rotating shaft 321.

[0069] By setting the rotating shaft 321, the cleaning part 323 can rotate along the circumferential direction of the rotating shaft 321, thereby enhancing the cleaning effect of the abutment position between the cleaning part 323 and the filter structure 23, and effectively removing the stubborn oil stains adhering to the filter structure 23. The setting of the telescopic shaft 322 can reduce the volume of the first cleaning structure 3 by contraction, which is convenient for the installation and assembly of the first cleaning structure 3 and provides installation space for other structures. On the other hand, such a setting is convenient for cleaning in the extended state, and can also avoid contact with the filter structure 23 in the contracted state, so that the fan 2 can operate smoothly.

[0070] The first cleaning structure 3 also includes: a thrust portion 35, a connecting rod and an elastic member 36. In this embodiment, the elastic member 36 is a spring. As a convertible embodiment, the elastic member 36 can also be a rubber or the like.

[0071] The thrust portion 35 is arranged between the auxiliary motor 34 and the rotating shaft 31, and connects the auxiliary motor 34 and the rotating shaft 31, and is used to limit the elastic member 36; the connecting rod is arranged inside the rotating shaft 31, and is respectively connected to the thrust portion 35 and the connecting member 33; the elastic member 36 is arranged on the peripheral side of the connecting rod, and the two ends are respectively connected to the thrust portion 35 and the rotating shaft 31, which is suitable for controlling the rotation shaft 321 to move along the central axis direction of the rotating shaft 31. As a convertible embodiment, an axial block or a slide rail can also be arranged on the connecting rod, and is arranged in cooperation with the rotating shaft 31.

[0072] By providing an elastic member 36, a connecting rod and a thrust portion 35, the rotating shaft 31 can be sleeved on the connecting rod. On the one hand, by providing an elastic member 36 to connect the thrust portion 35 and the rotating shaft 31, the rotating shaft 31 can move axially along the connecting rod, and the cleaning portion 323 on the rotating shaft 31 can come into contact with a larger area of ​​the filter structure 23, thereby achieving complete cleaning of a larger area of ​​the filter structure 23. On the other hand, by controlling the telescopic length of the elastic member 36, the cleaning position of the cleaning portion 323 can be controlled, thereby achieving accurate cleaning of dirt at different positions on the filter structure 23.

[0073] The second cleaning structure 4 includes a water tank 41 and a water pipe 42. The water tank 41 is arranged outside the filter cavity 11. The water pipe 42 is connected to a water pump 43, one end of which is arranged inside the water tank 41, and the other end of which is extended into the filter cavity 11 and connected to a cleaning nozzle 44. The cleaning nozzle 44 is arranged toward the filter structure 23. As a convertible embodiment, the water tank 41 can be arranged inside the housing 1.

[0074] A second cleaning structure 4 is provided to clean the filter structure 23 by means of water washing and spraying, thereby improving the cleaning efficiency and cleaning effect, and performing auxiliary cleaning on the first cleaning structure. When the first cleaning structure 3 is cleaned, water washing and spraying can be performed first to wet the filter structure 23 to avoid the appearance of flying dust or splashing of oil. In the process of washing the first cleaning structure, water washing and spraying can also be performed to wash away the dirt cleaned by the first cleaning structure, thereby achieving complete cleaning of the filter structure 23.

[0075] The second cleaning structure 4 also includes a water outlet pipe 45 and a sewage tank 4641. The two water outlet pipes 45 are arranged at the bottom end of the filter chamber 11 in the vertical direction; the sewage tank 4641 is arranged in the shell 1 and is closely attached to the shell 1, communicated with the end of the water outlet pipe 45, and a drain outlet is arranged on the shell 1.

[0076] A first filter 121 is provided on the air inlet 12. The first filter 121 is provided at the air inlet 12. On the one hand, large particle pollutants in the oil smoke entering the housing 1 can be initially filtered, reducing the content of pollutants that are difficult to clean on the filter structure 23, and also reducing the cleaning difficulty of the first cleaning device and the second cleaning device. On the other hand, the first filter 121 is provided at the air inlet 12, which is convenient for the staff to install and remove for effective cleaning.

[0077] The air regulating device 5 includes: an air regulating plate 51, which is arranged in an arc shape in the filter cavity 11 and separates the air outlet 13; an adjusting wind grille 52, which connects the filter cavity 11 and the air regulating plate 51, and is suitable for blocking at least part of the gas and adjusting the gap between the air regulating plate 51 and the inner wall of the filter cavity 11; and a filter substrate 53, which is arranged in the filter cavity 11 and fixedly connected to one end of the air regulating plate 51. The air regulating plate 51 separates the air outlet 13, and the adjusting wind grille 52 can adjust the extension length and play a role in blocking the wind. The adjusting wind grille 52 is connected and arranged between the filter cavity 11 and the air regulating plate 51, which can control the distance between the air regulating plate 51 and the side wall of the filter cavity 11, and play a certain role in blocking the flowing airflow in the space on this side, so that the size of the air outlet 13 and the air volume can be adjusted by adjusting the wind grille 52.

[0078] The filter substrate 53 is disposed on the bottom side of the filter cavity 11 along the vertical direction, and is fixedly connected to the filter screen structure 23 and is made of the same material.

[0079] The cleaning device also includes a controller 6, which is respectively connected to the fan 2, the regulating wind grid 52, the water pump 43 and the elastic member 36 for communication, and has different functions such as water spray control, cleaning, cleaning brush control, fan idling, alarm, timing and stop.

[0080] This embodiment also provides a range hood, comprising the above-mentioned cleaning device.

[0081] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A range hood, characterized in that: include: A housing (1) having a filter chamber (11) therein, wherein the filter chamber (11) is connected to an air inlet (12) and an air outlet (13); A fan (2) is arranged in the filter chamber (11); a rotating fan blade (22) is connected to a main shaft (21) of the fan (2); and a filter structure (23) is arranged along the circumference of the rotating fan blade (22); A first cleaning structure (3) is arranged inside the rotating fan blade (22) and has a working position abutting against the filter structure (23) and is suitable for cleaning the filter structure (23); A second cleaning structure (4), comprising a spray structure, disposed toward the filter structure (23) and suitable for cleaning the filter structure (23); The first cleaning structure (3) comprises: A rotating shaft (31) is coaxially arranged with the main shaft (21) of the fan (2) and is suitable for relative rotation with the filter structure (23); A plurality of cleaning shafts are radially arranged around the rotating shaft (31), and a cleaning portion (323) is arranged at the end thereof. The cleaning portion (323) has a working position for abutting against and cleaning the filter structure (23); The cleaning shaft further comprises: a rotating shaft (321) movably connected to the rotating shaft (31) and adapted to rotate along its own axis; A connecting member (33) is sleeved on the outside of the main shaft (21) of the fan (2), connects the rotating shaft (31) and the main shaft (21), and is provided with a sliding bearing fixed to the main shaft (21); an auxiliary motor (34), connected to the rotating shaft (31), and adapted to drive the rotating shaft (31) to rotate relative to the main shaft (21); The first cleaning structure (3) also includes: A thrust portion (35) is arranged between the auxiliary motor (34) and the rotating shaft (31); A connecting rod is arranged inside the rotating shaft (31) and is connected to the thrust portion (35) and the connecting member (33) respectively; The elastic member (36) is arranged on the peripheral side of the connecting rod, and its two ends are respectively connected to the thrust portion (35) and the rotating shaft (31), and is suitable for controlling the axial movement of the rotating shaft (321) along the rotating shaft (31).

2. The range hood according to claim 1, characterized in that: The cleaning shaft also includes: The telescopic shaft (322) has one end connected to the rotating shaft (321) and the other end fixedly connected to the cleaning portion (323), and is telescopically arranged in the extension direction of the rotating shaft (321).

3. The range hood according to any one of claims 1 to 2, characterized in that: The second cleaning structure (4) comprises: A water tank (41) is arranged outside the filter chamber (11); A water delivery pipe (42) is connected to a water pump (43), one end of which is arranged inside the water tank (41), and the other end of which is extended into the filter cavity (11) and connected to a cleaning nozzle (44), wherein the cleaning nozzle (44) is arranged toward the filter structure (23).

4. The range hood according to claim 3, characterized in that: The second cleaning structure (4) also includes: A water outlet pipe (45) is arranged vertically at the bottom end of the filter chamber (11); A sewage tank (46) is arranged inside the shell (1) and is closely attached to the shell (1), is communicated with the end of the water outlet pipe (45), and is provided with a drainage port on the shell (1).

5. The range hood according to claim 1, characterized in that: The air inlet (12) is provided with a first filter screen (121).

6. The range hood according to claim 5, characterized in that: The filter chamber (11) is arranged in a volute shape, the air outlet (13) is arranged at the end of the gas flow direction in the filter chamber (11), and an air regulating device (5) is arranged on the air outlet (13), and the air regulating device (5) is suitable for adjusting the air output of the air outlet (13).

7. The range hood according to claim 6, characterized in that: The air regulating device (5) comprises: An air regulating plate (51) is arranged in an arc shape in the filter cavity (11) and separates the air outlet (13); An adjustable air grille (52) connects the filter chamber (11) and the air regulating plate (51), and is suitable for blocking at least part of the gas and adjusting the gap between the air regulating plate (51) and the inner wall of the filter chamber (11); A filter substrate (53) is disposed in the filter cavity (11) and is fixedly connected to one end of the air regulating plate (51).

8. The range hood according to claim 7, characterized in that: The filter substrate (53) is arranged on the bottom side of the filter cavity (11) in a vertical direction, and is fixedly connected to the filter screen structure (23), and is arranged with the same material.

9. The range hood according to claim 8, characterized in that: It also includes a controller (6), wherein the controller (6) is communicatively connected to the fan (2), the regulating wind grid (52), the water pump (43) and the elastic member (36) respectively.

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