Indoor unit of air conditioner

Abstract

The utility model relates to an indoor unit of an air conditioner, which belongs to the technical field of air conditioning equipment and comprises a shell, an indoor heat exchanger, an indoor fan, a filter screen and a self-cleaning device. An indoor air inlet is formed in the top of the shell, and the filter screen is located at the position corresponding to the indoor air inlet. The self-cleaning device comprises a supporting assembly, a sweeping assembly and a transmission assembly. The supporting assembly is arranged between the indoor air inlet and the indoor heat exchanger, so that the filter screen is arranged on the supporting assembly in a sleeving mode and moves around the supporting assembly. The cleaning assembly is arranged on the periphery of the filter screen and makes contact with and cleans the filter screen. The transmission assembly comprises a first gear shaft and a second gear shaft, the two gear shafts are arranged on the inner side and the outer side of the filter screen respectively to clamp the filter screen, when the two gear shafts rotate, the filter screen is driven to move, teeth of the two gear shafts are meshed, the filter screen is clamped between the meshed teeth, the filter screen is clamped and driven to move through meshing force, the filter screen is more effectively prevented from slipping during moving, and the service life of the filter screen is prolonged. And the filter screen is ensured to be fully cleaned.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning equipment, and more particularly to an indoor air conditioning unit. Background Technology

[0002] An air conditioner, also known as an air conditioning unit, is a device that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow within a building or structure. To meet the needs of daily life, some air conditioners have a fresh air function, which can transfer outdoor air into the room.

[0003] Air conditioners typically contain filters to purify the air. If these filters aren't cleaned regularly, they accumulate dust and bacteria, which not only affects the air conditioner's efficiency and increases energy consumption, but may also negatively impact human health, such as causing respiratory illnesses. This is especially true for wall-mounted air conditioners, which are inconvenient to clean because they are suspended from the wall. Therefore, current technology often incorporates cleaning devices inside wall-mounted air conditioners for automatic filter cleaning.

[0004] In existing technology, a support assembly is installed between the air inlet of the indoor unit and the indoor heat exchanger. A cylindrical filter is fitted onto the support assembly and can rotate on it. A rotatable drive brush is located below the filter. Friction is generated by the peripheral wall of the drive brush contacting the filter, causing the brush to rotate and move the filter. However, the filter is made of a flexible material with a certain degree of elasticity. When the drive brush moves the filter, it is prone to slipping, causing the filter to become stuck and affecting the cleaning effect. Utility Model Content

[0005] This utility model solves, to at least a certain extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide an indoor air conditioning unit that provides a first gear shaft and a second gear shaft on the outer and inner sides of the filter screen respectively. The filter screen is clamped between the positions of the first gear shaft and the second gear shaft. When the two gear shafts rotate, the clamping pressure generates a large frictional force, thereby stably driving the filter screen to move synchronously, avoiding slippage of the filter screen during movement, and ensuring that the self-cleaning device effectively cleans the filter screen.

[0007] To achieve the above objectives, this utility model provides an indoor air conditioning unit, comprising:

[0008] The casing has an indoor air inlet at its top;

[0009] An indoor heat exchanger is disposed inside the housing;

[0010] An indoor fan is disposed inside the housing. The indoor fan causes airflow to enter the housing through the indoor air inlet, and after heat exchange through the indoor heat exchanger, it is introduced into the room.

[0011] The filter screen is movably connected to the housing corresponding to the indoor air inlet;

[0012] A self-cleaning device, disposed within the housing, for cleaning the filter screen, comprising:

[0013] A support assembly is disposed between the indoor air inlet and the indoor heat exchanger, the support assembly on which the filter screen is fitted and the filter screen can move around it;

[0014] A cleaning component is disposed on the periphery of the filter screen, and the cleaning component contacts the filter screen to clean the filter screen;

[0015] A transmission assembly for moving the filter screen includes:

[0016] A first gear shaft is disposed on the periphery of the filter screen, and the surface of the first gear shaft abuts against the filter screen.

[0017] The second gear shaft is disposed inside the filter screen and corresponds to the first gear shaft. The surface of the second gear shaft abuts against the filter screen. The teeth of the second gear shaft mesh with the teeth of the first gear shaft. The second gear shaft and the first gear shaft clamp the filter screen. The second gear shaft rotates synchronously with the first gear shaft and drives the filter screen to move.

[0018] In this technical solution, a first gear shaft and a second gear shaft are respectively installed on the outer and inner sides of the filter screen. The filter screen is clamped between the corresponding positions of the first and second gear shafts. When the two gear shafts rotate, they drive the filter screen to move synchronously, preventing slippage during movement and ensuring that the self-cleaning device effectively cleans the filter screen. The surfaces of the first and second gear shafts are set as toothed surfaces, and the two gear shafts mesh with each other. The filter screen is clamped between the meshing teeth, and the meshing force further clamps and drives the filter screen to move, more effectively preventing slippage during movement and ensuring that the filter screen is thoroughly cleaned.

[0019] In some embodiments of this application, the transmission ratio between the first gear shaft and the second gear shaft is 1.

[0020] In the technical solution, the transmission ratio of the first gear shaft and the second gear shaft is 1, and the contact area between the filter screen and the tooth surface is large, which can better clamp the filter screen between the meshing teeth and ensure the movement of the filter screen.

[0021] In some embodiments of this application, the surface layer of the first gear shaft and / or the second gear shaft is configured as a flexible layer.

[0022] In the technical solution, the surfaces of the first gear shaft and the second gear shaft are set to be flexible, such as rubber-made toothed rollers, which have a certain elastic space when clamping the filter screen and moving it, which can effectively prevent the filter screen from being damaged.

[0023] In some embodiments of this application, the support component is provided with a clearance groove corresponding to the position of the second gear shaft, and a portion of the second gear shaft is disposed in the clearance groove.

[0024] In the technical solution, the second gear shaft is located between the support assembly and the filter. To facilitate the assembly of the self-cleaning device, the second gear shaft can be installed on the support assembly. The support assembly is provided with a corresponding clearance groove to fix the second gear shaft on it. At the same time, the dimensions of the upper and lower thicknesses after the two are combined are reduced, thereby reducing the dimensions of the support assembly, filter, and transmission assembly in the thickness of the air conditioner indoor unit.

[0025] In some embodiments of this application, the cleaning component includes:

[0026] A brush roller, which is rotatably disposed below the filter screen and in contact with the filter screen, is used to clean the filter screen;

[0027] The first gear is fixedly connected to one end of the brush roller and is used to drive the brush roller to rotate.

[0028] The output gear meshes with the first gear.

[0029] A drive motor is provided, the output end of which is connected to the output gear. When the drive motor drives the first gear to rotate, the first gear drives the brush roller to rotate synchronously.

[0030] In the technical solution, a brush roller is set in contact with the filter screen and rotates in the opposite direction to the movement direction of the filter screen. The bristles of the brush roller clean dust and other foreign objects on the filter screen. The brush roller rotates in the opposite direction to the movement direction of the filter screen by a gear combination of the output end gear and the first gear driven by the motor.

[0031] In some embodiments of this application, the transmission assembly further includes a second gear, which is fixedly connected to one end of the first gear shaft;

[0032] The second gear meshes with the first gear. When the drive motor drives the first gear to rotate, the first gear drives the brush roller to rotate synchronously and drives the second gear to rotate. The rotation of the second gear drives the first gear shaft to rotate.

[0033] In the technical solution, by setting a second gear at one end of the first gear shaft and meshing the second gear with the first gear, the first gear shaft can be rotated through the transmission of the gear set when the drive motor starts to drive the brush roller to rotate. The movement of the filter screen and the rotation of the brush roller in the opposite direction to the movement of the filter screen can be realized by a single drive motor.

[0034] In some embodiments of this application, the cleaning component further includes:

[0035] A cleaning comb is disposed on one side of the brush roller. The cleaning comb has a plurality of comb teeth distributed along the axial direction of the brush roller. The comb teeth contact the bristles of the brush roller and are used to clean the brush roller.

[0036] In the technical solution, a cleaning comb is set in the cleaning component to clean the bristles of the brush roller. The comb teeth on the cleaning comb contact the bristles of the brush roller, separate and comb them, thereby reducing the dust accumulated on the cleaning brush and improving the cleaning effect on the filter screen.

[0037] In some embodiments of this application, the self-cleaning device further includes:

[0038] A fixed bracket is provided at one end of the length direction of the indoor heat exchanger;

[0039] The cleaning assembly and the first gear shaft are connected in the fixed bracket, and the second gear shaft is connected in the support assembly. One end of the support assembly is movably connected above the fixed bracket in the longitudinal direction, so that the filter screen is clamped by the first gear shaft and the second gear shaft.

[0040] In the technical solution, a fixed bracket is set in the self-cleaning device. The cleaning component and the first gear shaft are installed through the fixed bracket and cooperate with the support component. When the support component is installed in the indoor unit, the second gear shaft installed in the support component cooperates with the first gear shaft to clamp the filter screen.

[0041] In some embodiments of this application, the front panel movably closes the front side of the housing;

[0042] The self-cleaning device also includes a dust collection box, which is disposed below the fixed bracket inside the housing, and a pull-out opening is provided on the front side of the housing corresponding to the dust collection box;

[0043] When the front panel is opened, the dust collection box can be pulled out from the housing along the pull-out opening.

[0044] In the technical solution, a dust collection box is installed below the fixed bracket, that is, below the brush roller, to collect dust and other foreign objects swept off the filter screen by the brush roller. A pull-out opening is provided on the front side of the housing, and the dust collection box can be removed by opening the front panel to clean the accumulated dust inside.

[0045] In addition, this application also provides an air conditioner indoor unit, which includes:

[0046] The casing has an indoor air inlet at its top;

[0047] An indoor heat exchanger is disposed inside the housing;

[0048] An indoor fan is disposed inside the housing. The indoor fan causes airflow to enter the housing through the indoor air inlet, and after heat exchange through the indoor heat exchanger, it is introduced into the room.

[0049] The filter screen is movably connected to the housing corresponding to the indoor air inlet;

[0050] A self-cleaning device, disposed within the housing, for cleaning the filter screen, comprising:

[0051] A support assembly is disposed between the indoor air inlet and the indoor heat exchanger, the support assembly on which the filter screen is fitted and the filter screen can move around it;

[0052] A cleaning component is disposed on the periphery of the filter screen, and the cleaning component contacts the filter screen to clean the filter screen;

[0053] A transmission assembly for moving the filter screen includes:

[0054] A first roller is disposed around the filter screen, and the surface of the first roller presses against the filter screen.

[0055] The second roller is disposed inside the filter screen and corresponds to the first roller. The surface of the second roller presses against the filter screen, and the second roller and the first roller clamp the filter screen. The second roller rotates synchronously with the first roller and drives the filter screen to move.

[0056] In the technical solution, a first roller and a second roller are respectively set on the outer and inner sides of the filter screen. The filter screen is clamped between the positions of the first roller and the second roller. When the two rollers rotate, the clamping pressure generates a large friction force, which stably drives the filter screen to move synchronously, avoiding slippage of the filter screen when it moves and ensuring that the self-cleaning device effectively cleans the filter screen.

[0057] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of this application;

[0059] Figure 2 This is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of this application;

[0060] Figure 3 This is a schematic diagram of the structure of the dust collection box of the indoor unit of the air conditioner according to the embodiment of this application when it is pulled out;

[0061] Figure 4 This is a structural schematic diagram of the self-cleaning device for an air conditioner indoor unit according to an embodiment of this application;

[0062] Figure 5 This is a schematic diagram of the top surface structure of the self-cleaning device of an air conditioner indoor unit according to an embodiment of this application;

[0063] Figure 6 This is a schematic diagram of the internal structure of the self-cleaning device of an air conditioner indoor unit according to an embodiment of this application;

[0064] Figure 7 This is a partial enlarged structural diagram (A) of the self-cleaning device of an air conditioner indoor unit according to an embodiment of this application;

[0065] Figure 8 This is a schematic diagram of the transmission assembly and cleaning assembly of the self-cleaning device of an air conditioner indoor unit according to an embodiment of this application;

[0066] Figure 9 This is a schematic diagram of the transmission assembly and cleaning assembly of the self-cleaning device of an air conditioner indoor unit according to an embodiment of this application;

[0067] Figure 10 This is a schematic diagram of the transmission assembly of the self-cleaning device for an air conditioner indoor unit according to an embodiment of this application.

[0068] In the above figures: 100, housing; 110, indoor air inlet; 120, indoor air outlet; 130, front panel; 140, pull-out opening; 200, filter screen; 300, self-cleaning device; 310, support assembly; 311, clearance groove; 320, cleaning assembly; 321, brush roller; 322, first gear; 323, drive motor; 324, output gear; 325, cleaning comb; 330, transmission assembly; 331, first gear shaft; 332, second gear shaft; 333, second gear; 340, fixed bracket; 350, dust collection box. Detailed Implementation

[0069] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0074] In this application, the indoor unit of the air conditioner includes a casing, an indoor heat exchanger, and an indoor fan. The indoor heat exchanger and the indoor fan are disposed inside the casing. Indoor air enters the casing and comes into contact with the indoor heat exchanger. After heat exchange between the indoor heat exchanger and the air, the heat-exchanged air is output to the room under the action of the indoor fan, thereby achieving the regulation of the indoor temperature.

[0075] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0076] As attached Figures 1 to 10 As shown, in one illustrative embodiment of the indoor unit of the air conditioner of this utility model, the indoor unit includes a housing 100, and an indoor air inlet 110 is provided on the top of the housing 100.

[0077] In some embodiments, the indoor unit of the air conditioner also includes an indoor heat exchanger. The indoor heat exchanger is disposed inside the housing 100.

[0078] In some embodiments, the indoor unit of the air conditioner also includes an indoor fan. The indoor fan is disposed inside the housing 100, and the indoor fan causes airflow to enter the housing 100 through the indoor air inlet 110, and after heat exchange by the indoor heat exchanger, it is introduced into the room.

[0079] In some embodiments, the indoor unit of the air conditioner also includes a filter 200. The filter 200 is an annular strip and is movably connected to the housing 100 corresponding to the indoor air inlet 110.

[0080] In some embodiments, the indoor unit of the air conditioner also includes a self-cleaning device 300. The self-cleaning device 300 is disposed within the housing 100 and is used to clean the filter 200.

[0081] like Figure 4 As shown, in some embodiments, the self-cleaning device 300 includes a support assembly 310. The support assembly 310 is disposed between the indoor air inlet 110 and the indoor heat exchanger, and a filter 200 is sleeved on the support assembly 310 and moves around the support assembly 310.

[0082] like Figure 6 as well as Figure 8As shown, in some embodiments, the self-cleaning device 300 includes a cleaning assembly 320. The cleaning assembly 320 is disposed around the periphery of the filter screen 200, and contacts and cleans the filter screen 200. Preferably, the cleaning assembly 320 is disposed below one end of the support assembly 310, facilitating the direct fall of dust by gravity. More preferably, the cleaning assembly 320 is located at one end of the longitudinal direction of the indoor heat exchanger inside the housing 100, which can reduce the space occupied by the self-cleaning device 300 within the housing and improve the space utilization rate within the housing 100.

[0083] In some embodiments, the self-cleaning device 300 includes a transmission assembly 330. The transmission assembly 330 is used to move the filter 200. The transmission assembly 330 can be driven directly by a drive member or indirectly by other transmission mechanisms.

[0084] like Figure 9 As shown, in some embodiments, the transmission assembly 330 includes a first gear shaft 331 and a second gear shaft 332. The first gear shaft 331 is disposed around the periphery of the filter screen 200, and its surface presses against the filter screen 200. The second gear shaft 332 is disposed inside the filter screen 200 and corresponds to the first gear shaft 331, with its surface also pressing against the filter screen 200. Preferably, the tooth length of the first gear shaft 331 and the second gear shaft 332 is not shorter than the width of the filter screen 200. The teeth of the first gear shaft 331 mesh with the teeth of the second gear shaft 332, clamping the filter screen 200. The first gear shaft 331 and the second gear shaft 332 rotate synchronously, driving the filter screen 200 to move.

[0085] Through the above solution, a first gear shaft 331 and a second gear shaft 332 are respectively arranged on the outer and inner sides of the filter screen 200. The filter screen 200 is clamped at corresponding positions of the first gear shaft 331 and the second gear shaft 332. When the two gear shafts rotate, they drive the filter screen 200 to move synchronously, avoiding slippage of the filter screen 200 during movement and ensuring that the self-cleaning device 300 effectively cleans the filter screen 200. The surfaces of the first gear shaft 331 and the second gear shaft 332 are set as toothed surfaces and mesh with each other. The filter screen 200 is clamped between the meshing teeth, and the meshing force further clamps and drives the filter screen 200 to move, more effectively preventing slippage of the filter screen 200 during movement and ensuring that the filter screen 200 is thoroughly cleaned.

[0086] like Figure 10 As shown, in some embodiments, the transmission ratio of the first gear shaft 331 and the second gear shaft 332 is 1, that is, the first gear shaft 331 and the second gear shaft 332 have the same tooth surface. This design makes the contact area between the filter screen 200 and the tooth surface larger, which can better clamp the filter screen 200 between the meshing teeth.

[0087] In some embodiments, the surface layer of at least one of the first gear shaft 331 and the second gear shaft 332 is configured as a flexible layer. Thus, when the first gear shaft 331 and the second gear shaft 332 clamp the filter screen 200 and move the filter screen 200, there is a certain amount of elastic space, which can effectively prevent damage to the filter screen 200.

[0088] In some embodiments, the first gear shaft 331 and the second gear shaft 332 may be configured as a centrally circumferentially rigid shaft, on which a rubber toothed roller is fixed. The rubber toothed roller is flexible while also possessing a certain strength and friction, ensuring effective driving of the filter screen 200.

[0089] like Figure 6 as well as Figure 7 As shown, in some embodiments, the support component 310 is provided with a clearance groove 311 corresponding to the position of the second gear shaft 332, and the second gear shaft 332 is partially disposed in the clearance groove 311. To facilitate the assembly of the self-cleaning device 300, the second gear shaft 332 can be mounted on the support component 310, and the support component 310 is provided with a corresponding clearance groove 311 to fix the second gear shaft 332 on the support component 310. At the same time, the combined dimensions of the two components are reduced in terms of vertical thickness, thereby reducing the combined dimensions of the support component 310, filter 200, and transmission component 330 in terms of thickness of the air conditioner indoor unit.

[0090] like Figure 8 As shown, in some embodiments, the cleaning assembly 320 includes a brush roller 321, a first gear 322, a drive motor 323, and an output gear 324. The brush roller 321 is rotatably disposed below and in contact with the filter screen 200 for cleaning the filter screen 200. The first gear 322 is fixedly connected to one end of the brush roller 321 to drive the brush to rotate. The drive motor 323 is disposed within the housing 100, and an output gear 324 is fixed to the output end of the drive motor 323. The output gear 324 meshes with the first gear 322. When the drive motor 323 drives the first gear 322 to rotate, the first gear 322 drives the brush roller 321 to rotate synchronously. The bristles of the brush roller 321 clean dust and other foreign objects on the filter screen 200. The brush roller 321 rotates in the opposite direction to the movement direction of the filter screen 200 by the gear combination of the output gear 324 and the first gear 322 driven by the motor.

[0091] In some embodiments, the transmission assembly 330 further includes a second gear 333. The second gear 333 is fixedly connected to one end of the first gear shaft 331. The second gear 333 meshes with the first gear 322. When the drive motor 323 drives the first gear 322 to rotate, the first gear 322 drives the brush roller 321 to rotate synchronously and also drives the second gear 333 to rotate. The rotation of the second gear 333 drives the first gear shaft 331 to rotate. With the second gear 333 meshing with the first gear 322, the rotation of the first gear shaft 331 can be driven simultaneously by the transmission of the gear set when the drive motor 323 starts driving the brush roller 321 to rotate. Thus, the movement of the filter screen 200 and the rotation of the brush roller 321 in opposite directions to the movement of the filter screen 200 can be achieved by a single drive motor 323.

[0092] In some embodiments, the cleaning assembly 320 further includes a cleaning comb 325. The cleaning comb 325 is disposed on one side of the brush roller 321 and has teeth distributed along the axial direction of the brush roller 321. The teeth contact the bristles of the brush roller 321 and clean it. The teeth on the cleaning comb 325 contact the bristles of the brush roller 321, separating and combing them, thereby reducing dust accumulation on the cleaning brush.

[0093] In some embodiments, the self-cleaning device 300 further includes a fixed bracket 340, which is a rectangular frame extending vertically. The fixed bracket 340 is disposed within the housing 100 and located at one end of the indoor heat exchanger along its length. The cleaning assembly 320 and the first gear shaft 331 are mounted in the fixed bracket 340, and one end of the support assembly 310 along its length is movably mounted above the fixed bracket 340, causing the filter screen 200 to be clamped by the first gear shaft 331 and the second gear shaft 332. The cleaning assembly 320 and the first gear shaft 331 are installed via the fixed bracket 340 and cooperate with the support assembly 310. When the support assembly 310 is installed in the indoor unit, the second gear shaft 332 installed in the support assembly 310 cooperates with the first gear shaft 331 to clamp the filter screen 200.

[0094] In some embodiments, an indoor air outlet 120 is provided on the lower front side of the housing 100, and a front panel 130 is provided on the front side of the housing 100, which movably closes the front side of the housing 100. Specifically, the upper part of the front panel 130 is hinged to the front side of the housing 100.

[0095] like Figures 2 to 4As shown, in some embodiments, the self-cleaning device 300 further includes a dust collection box 350. The dust collection box 350 is disposed below the fixed bracket 340 inside the housing 100, and a pull-out opening 140 is provided on the front side of the housing 100 corresponding to the dust collection box 350. When the front panel 130 is opened, the dust collection box 350 can be pulled out from inside the housing 100 along the pull-out opening 140. By providing the dust collection box 350 below the fixed bracket 340, i.e. below the brush roller 321, it is used to collect dust and other foreign objects swept off the filter screen 200 by the brush roller 321. The pull-out opening 140 on the front side of the housing 100 allows the dust collection box 350 to be removed and the accumulated dust inside to be cleaned.

[0096] Please refer to Figures 1 to 4 Furthermore, this application also provides an indoor air conditioning unit, including a housing 100, an indoor heat exchanger, an indoor fan, a filter 200, and a self-cleaning device 300. The indoor heat exchanger, indoor fan, filter 200, and self-cleaning device 300 are all disposed within the housing 100. An indoor air inlet 110 is provided at the top of the housing 100. The indoor fan directs airflow through the indoor air inlet 110 into the housing 100, where it is heated by the indoor heat exchanger before being introduced into the room. The filter 200 is located at a position corresponding to the indoor air inlet 110 and is movable. The self-cleaning device 300 is used to clean the filter 200.

[0097] The self-cleaning device 300 includes a support assembly 310, a cleaning assembly 320, and a transmission assembly 330. The support assembly 310 is disposed between the indoor air inlet 110 and the indoor heat exchanger, and allows the filter screen 200 to be fitted onto it and move around it. The cleaning assembly 320 is disposed around the filter screen 200, and contacts and cleans the filter screen 200. The transmission assembly 330 is used to move the filter screen 200.

[0098] Specifically, the transmission assembly 330 includes a first roller and a second roller. The first roller is disposed around the periphery of the filter screen 200, and its surface presses against the filter screen 200. The second roller is disposed inside the filter screen 200 and corresponds to the first roller, with its surface also pressing against the filter screen 200. The first and second rollers clamp the filter screen 200, and the first and second rollers rotate synchronously, driving the filter screen 200 to move.

[0099] With the above solution, the indoor unit sets a first roller and a second roller on the outer and inner sides of the filter 200 respectively. The filter 200 is clamped at the corresponding positions of the first roller and the second roller. When the two rollers rotate, the clamping pressure generates a large friction force, thereby stably driving the filter 200 to move synchronously, avoiding slippage of the filter 200 when it moves, and ensuring that the self-cleaning device 300 effectively cleans the filter 200.

[0100] Embodiments of the present invention have been shown and described. It is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An indoor unit for an air conditioner, characterized in that, It includes: The casing has an indoor air inlet at its top; An indoor heat exchanger is disposed inside the housing; An indoor fan is disposed inside the housing. The indoor fan causes airflow to enter the housing through the indoor air inlet, and after heat exchange through the indoor heat exchanger, it is introduced into the room. The filter screen is movably connected to the housing corresponding to the indoor air inlet; A self-cleaning device, disposed within the housing, for cleaning the filter screen, comprising: A support assembly is disposed between the indoor air inlet and the indoor heat exchanger, the support assembly on which the filter screen is fitted and the filter screen can move around it; A cleaning component is disposed on the periphery of the filter screen, and the cleaning component contacts the filter screen to clean the filter screen; A transmission assembly for moving the filter screen includes: A first gear shaft is disposed on the periphery of the filter screen, and the surface of the first gear shaft abuts against the filter screen. The second gear shaft is disposed inside the filter screen and corresponds to the first gear shaft. The surface of the second gear shaft abuts against the filter screen. The teeth of the second gear shaft mesh with the teeth of the first gear shaft. The second gear shaft and the first gear shaft clamp the filter screen. The second gear shaft rotates synchronously with the first gear shaft and drives the filter screen to move.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The transmission ratio between the first gear shaft and the second gear shaft is 1.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The surface layer of the first gear shaft and / or the second gear shaft is configured as a flexible layer.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, The support component is provided with a clearance groove corresponding to the position of the second gear shaft, and a portion of the second gear shaft is disposed in the clearance groove.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The cleaning component includes: A brush roller, which is rotatably disposed below the filter screen and in contact with the filter screen, is used to clean the filter screen; The first gear is fixedly connected to one end of the brush roller and is used to drive the brush roller to rotate. The output gear meshes with the first gear. A drive motor is provided, the output end of which is connected to the output gear. When the drive motor drives the first gear to rotate, the first gear drives the brush roller to rotate synchronously.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The transmission assembly further includes a second gear, which is fixedly connected to one end of the first gear shaft; The second gear meshes with the first gear. When the drive motor drives the first gear to rotate, the first gear drives the brush roller to rotate synchronously and drives the second gear to rotate. The rotation of the second gear drives the first gear shaft to rotate.

7. The indoor unit of the air conditioner according to claim 5, characterized in that, The cleaning assembly also includes: A cleaning comb is disposed on one side of the brush roller. The cleaning comb has a plurality of comb teeth distributed along the axial direction of the brush roller. The comb teeth contact the bristles of the brush roller and are used to clean the brush roller.

8. The indoor unit of the air conditioner according to claim 1, characterized in that, The self-cleaning device also includes: A fixed bracket is provided at one end of the length direction of the indoor heat exchanger; The cleaning assembly and the first gear shaft are connected in the fixed bracket, and the second gear shaft is connected in the support assembly. One end of the support assembly is movably connected above the fixed bracket in the longitudinal direction, so that the filter screen is clamped by the first gear shaft and the second gear shaft.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, A front panel is provided on the front side of the housing, and the front panel can movably close the front side of the housing; The self-cleaning device also includes a dust collection box, which is disposed below the fixed bracket inside the housing, and a pull-out opening is provided on the front side of the housing corresponding to the dust collection box; When the front panel is opened, the dust collection box can be pulled out from the housing along the pull-out opening.

10. An indoor unit for an air conditioner, characterized in that, It includes: The casing has an indoor air inlet at its top; An indoor heat exchanger is disposed inside the housing; An indoor fan is disposed inside the housing. The indoor fan causes airflow to enter the housing through the indoor air inlet, and after heat exchange through the indoor heat exchanger, it is introduced into the room. The filter screen is movably connected to the housing corresponding to the indoor air inlet; A self-cleaning device, disposed within the housing, for cleaning the filter screen, comprising: A support assembly is disposed between the indoor air inlet and the indoor heat exchanger, the support assembly on which the filter screen is fitted and the filter screen can move around it; A cleaning component is disposed on the periphery of the filter screen, and the cleaning component contacts and cleans the filter screen; A transmission assembly for moving the filter screen includes: A first roller is disposed around the filter screen, and the surface of the first roller presses against the filter screen. The second roller is disposed inside the filter screen and corresponds to the first roller. The surface of the second roller presses against the filter screen. The second roller and the first roller clamp the filter screen. The second roller rotates synchronously with the first roller and drives the filter screen to move.

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