Air conditioner indoor unit

Abstract

An air conditioner indoor unit is provided. The air conditioner indoor unit includes a filter and a self-cleaning assembly. The filter is configured to filter foreign matter in indoor air. The self-cleaning assembly is configured to remove foreign matter on the at least one filter. The self-cleaning assembly includes a first reel, a second reel, a cleaning brush reel, and a cleaning brush. The first reel is connected to one end of the filter, and the second reel is connected to the other end of the filter. The cleaning brush is installed on the cleaning brush reel and configured to clean foreign matter on the filter. The self-cleaning assembly further includes a position limiting portion and a stopper portion. The position limiting portion is connected to the cleaning brush reel. The stopper portion is provided on an inner wall of the base. The position limiting portion is configured to limit a rotation angle of the cleaning brush by engaging with the stopper portion.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from the following PCT international patent application bearing application number PCT / CN2023 / 096723, filed on May 29, 2023; the PCT international patent application bearing application number PCT / CN2023 / 105581, filed on July 3, 2023; the Chinese patent application bearing application number 202310269552.1, filed on March 17, 2023; and the Chinese patent application bearing application number 202320297894.X, filed on February 21, 2023, the entire disclosures of which are incorporated herein by reference. 、 The Chinese patent application with application number 202223608409.0 filed on December 30, 2022, claims priority from the Chinese patent application with application number 202223602180.X filed on December 30, 2022, and the PCT international patent application with application number PCT / CN2023 / 105581 claims priority from the Chinese patent application with application number 202321340922.8 filed on May 29, 2023.

[0002] The present disclosure relates to the field of air conditioning technology, and more particularly to an air conditioner indoor unit. [Background technology]

[0003] Air conditioners are an essential household appliance. The indoor unit of an air conditioner is installed indoors as part of the air conditioner and is used to raise or lower the temperature in the room by exchanging heat with the air inside.

[0004] The air conditioner indoor unit uses a filter to filter the air entering the air conditioner indoor unit, preventing foreign matter such as dust in the air from entering the air conditioner indoor unit, and cleans the foreign matter adhering to the filter with a self-cleaning assembly, thereby maintaining efficient operation of the air conditioner indoor unit. Summary of the Invention [Means for solving the problem]

[0005] In one aspect, an air conditioner indoor unit is provided, the air conditioner indoor unit comprising: a housing, at least one filter, and at least one self-cleaning assembly. The housing has an air inlet and an air outlet. The at least one filter covers the air inlet and is configured to filter foreign matter in indoor air. The at least one self-cleaning assembly corresponds to the at least one filter and is configured to remove foreign matter on the at least one filter. The self-cleaning assembly includes a base, a first reel, a second reel, a cleaning brush assembly, and a dust collection box. A cleaning cavity is defined within the base. The top of the cleaning cavity is open, forming a first opening, and the bottom of the cleaning cavity is open, forming a second opening. The first reel is rotatably connected to the base and is located in the first opening. The first reel is connected to one end of the filter. The second reel is rotatably connected to the base and is located above the first opening. The second reel is connected to the other end of the filter. The cleaning brush assembly is installed in the cleaning cavity and includes a cleaning brush reel and a cleaning brush. The cleaning brush reel is rotatably connected to the base. The cleaning brush is installed on the cleaning brush reel and configured to clean foreign matter on the filter when the filter is being wound onto or released from the first reel. The dust collection box is installed in the second opening and configured to collect foreign matter cleaned from the filter by the cleaning brush assembly. The self-cleaning assembly further includes at least one position limiting portion and at least one stop portion. The at least one position limiting portion is connected to at least one end of the cleaning brush reel. The at least one stop portion is provided on an inner wall of the base and corresponds to the at least one position limiting portion. The position limiting portion is configured to engage with the stopper portion to limit the rotation angle of the cleaning brush.

[0006] In another aspect, an air conditioner indoor unit is provided, the air conditioner indoor unit comprising a housing, a filter, a self-cleaning assembly, and a controller. The housing has an air inlet and an air outlet. The filter covers the air inlet and is configured to filter foreign matter from indoor air. The self-cleaning assembly is configured to remove foreign matter from the filter. The self-cleaning assembly includes a base, a first reel, a second reel, a cleaning brush assembly, cleaning components, and a dust collection box. A cleaning cavity is defined within the base. The first reel is rotatably connected to the base and connected to one end of the filter. The second reel is rotatably connected to the base and connected to the other end of the filter. The cleaning brush assembly is installed in the cleaning cavity and includes a cleaning brush reel and a cleaning brush. The cleaning brush reel is rotatably connected to the base. The cleaning brush is mounted on the cleaning brush reel and configured to clean foreign matter off the filter when the filter is being wound onto or released from the first reel. The cleaning element is mounted on the inner wall of the base and configured to clean foreign matter off the cleaning brush. The dust collection box is mounted at the bottom of the cleaning cavity and configured to collect foreign matter falling from the cleaning brush and the cleaning element. The controller is communicatively connected to the first reel, the second reel, and the cleaning brush reel, respectively, and configured to control the rotation of the first reel, the second reel, and the cleaning brush reel. The controller is further configured to, when the air conditioner indoor unit operates in a self-cleaning mode, control the rotation of the cleaning brush reel to rotate the cleaning brush to the first reel and bring it into contact with the filter wound on the first reel, control the rotation of the first reel to move the filter and cause the cleaning brush to clean foreign matter on the filter, and after the cleaning brush has cleaned the filter, control the rotation of the cleaning brush assembly to rotate the cleaning brush to the cleaning part and cause the cleaning part to clean foreign matter on the cleaning brush. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of an air conditioner indoor unit according to some embodiments. [Figure 2] FIG. 1 is a perspective view of a housing of an air conditioner indoor unit according to some embodiments. [Figure 3] FIG. 3 is a partial enlarged view of the circle A in FIG. 2. [Figure 4] FIG. 1 is a front view of an air conditioner indoor unit according to some embodiments. [Figure 5] FIG. 5 is a cross-sectional view taken along the line BB in FIG. [Figure 6] FIG. 2 is a perspective view of a base of an air conditioner indoor unit according to some embodiments. [Figure 7A] FIG. 2 is a cross-sectional view of a base of an air conditioner indoor unit according to some embodiments. [Figure 7B] 1 is a perspective view of a first reel and a second reel of an air conditioner indoor unit according to some embodiments. FIG. [Figure 8A] 1A to 1C are structural diagrams of a first portion of a first reel or a third portion of a second reel of an air conditioner indoor unit according to some embodiments. [Figure 8B] 10A to 10C are structural diagrams of the second portion of the first reel or the fourth portion of the second reel of an air conditioner indoor unit according to some embodiments. [Figure 9] FIG. 1 is a perspective view of an air conditioner indoor unit with a panel removed according to some embodiments. [Figure 10] FIG. 1 is a perspective view of an air conditioner indoor unit with a panel and a housing removed according to some embodiments. [Figure 11] FIG. 11 is a partial enlarged view of the circle C in FIG. [Figure 12] FIG. 10 is a perspective view of another base of an air conditioner indoor unit according to some embodiments. [Figure 13] 1 is a structural diagram of a link, a transmission assembly, and a drive assembly of an air conditioner indoor unit according to some embodiments. [Figure 14] FIG. 14 is a partial enlarged view of the circle D in FIG. [Figure 15] FIG. 1 is a perspective view of an air conditioner indoor unit with a panel and one base removed according to some embodiments. [Figure 16] FIG. 16 is a partial enlarged view of the circle E in FIG. [Figure 17] 1 is a structural diagram of a filter in an air conditioner indoor unit according to some embodiments. [Figure 18] FIG. 10 is a block diagram of another air conditioner indoor unit according to some embodiments. [Figure 19] FIG. 10 is a perspective view of another air conditioner indoor unit according to some embodiments. [Figure 20] FIG. 10 is an exploded view of a housing and self-cleaning assembly of another air conditioner indoor unit according to some embodiments. [Figure 21] FIG. 10 is an exploded view of another self-cleaning assembly of an air conditioner indoor unit according to some embodiments. [Figure 22] FIG. 22 is a partial enlarged view of the circle P in FIG. 21. [Figure 23] FIG. 10 is a cross-sectional view of another self-cleaning assembly for an air conditioner indoor unit according to some embodiments. [Figure 24] FIG. 10 is an exploded view of a cleaning brush assembly for another air conditioner indoor unit according to some embodiments. [Figure 25] FIG. 10 is an exploded view of another self-cleaning assembly of an air conditioner indoor unit according to some embodiments. [Figure 26] FIG. 10 is an exploded view of a drive assembly of another air conditioner indoor unit according to some embodiments. [Figure 27] FIG. 10 is a perspective view of a stopper portion of another air conditioner indoor unit according to some embodiments. [Figure 28] FIG. 10 is an exploded view of a self-cleaning assembly and filter of another air conditioner indoor unit according to some embodiments. [Figure 29] 10 is a cross-sectional view of another air conditioner indoor unit according to some embodiments, when a position limiting portion is located in a first position. FIG. [Figure 30] 10 is a cross-sectional view of another air conditioner indoor unit according to some embodiments, when the position limiting portion is located in a second position. FIG. [Figure 31]10 is a cross-sectional view of another air conditioner indoor unit according to some embodiments, when a position limiting portion is located between a first position and a second position. FIG. [Figure 32] FIG. 10 is a structural diagram of a stopper portion and a position limiting portion (located in a first position) of another air conditioner indoor unit according to some embodiments. [Figure 33] FIG. 10 is a structural diagram of a stopper portion and a position limiting portion (located in a second position) of another air conditioner indoor unit according to some embodiments. [Figure 34] FIG. 10 is a structural diagram of a self-cleaning assembly (with the cleaning brush in the first set position) and a filter of another air conditioner indoor unit according to some embodiments. [Figure 35] FIG. 35 is a partial enlarged view of a circle K in FIG. 34. [Figure 36] FIG. 10 is a structural diagram of a self-cleaning assembly (with the cleaning brush in the second setting position) and a filter of another air conditioner indoor unit according to some embodiments. [Figure 37] FIG. 37 is a partial enlarged view of the circle L in FIG. 36. [Figure 38] FIG. 10 is a structural diagram of a self-cleaning assembly (with the cleaning brush in the third setting position) and a filter of another air conditioner indoor unit according to some embodiments. [Figure 39] FIG. 39 is a partially enlarged view of the circle M in FIG. 38. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, several embodiments of the present disclosure will be clearly and completely described with reference to the drawings. Of course, the embodiments described herein are only a part of the embodiments of the present disclosure, and are not all of the embodiments. All other embodiments that can be conceived by a person skilled in the art based on the embodiments in the present disclosure are intended to be included in the scope of the present disclosure.

[0009] In this specification, the use of "applied to" or "disposed to" is intended to be open and inclusive language and does not exclude devices adapted or arranged to perform additional tasks or steps.

[0010] In the description of this application, it should be understood that orientations or positional relationships indicated by terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. are based on the orientations or positional relationships shown in the drawings and are for the convenience or simplification of the description of this application, and do not indicate or imply that the referenced devices or elements need to have a particular orientation or be constructed or operated in a particular orientation, and should not be understood as limiting this application.

[0011] For ease of explanation, the expressions "up," "down," "left," "right," "front," and "rear" used in this disclosure are based on the state of the air conditioner indoor unit when it is in operation, unless otherwise specified. When the air conditioner indoor unit is in operation, the side facing the user is the front, and the opposite side is the rear. The height direction of the air conditioner indoor unit is the up-down direction. The length direction of the air conditioner indoor unit is the left-right direction, and the thickness direction of the air conditioner indoor unit is the front-to-rear direction.

[0012] As air conditioners become more widespread, users' demands for air conditioners are also increasing. An air conditioner indoor unit includes an air inlet and an air outlet. A filter is installed at the air inlet to filter the air entering the air conditioner indoor unit and prevent foreign matter such as dust from entering the air conditioner indoor unit. After the air conditioner indoor unit has been running for a certain period of time, excessive dust and other foreign matter may accumulate on the filter, partially clogging the filter and reducing the amount of air intake, potentially reducing the cooling or heating efficiency of the air conditioner.

[0013] Typically, a roller brush is installed inside an air conditioner indoor unit to remove foreign matter adhering to the filter, thereby maintaining the filter's high filtering capacity and maintaining the cooling or heating efficiency of the air conditioner indoor unit. After the air conditioner indoor unit has been operating for a certain period of time, the amount of foreign matter adhering to the filter increases, necessitating the removal of the filter assembly and cleaning of the filter, roller brush, and other components of the filter assembly. During the removal of the filter assembly, a drive motor is connected to the filter to drive the filter relative to the roller brush, so the drive motor must be removed before removing the filter assembly. However, removing the filter assembly can pose a safety risk, such as electric shock due to contact with the drive motor. Furthermore, the difficulty of removing and installing the filter assembly reduces the efficiency of assembling the air conditioner indoor unit and makes it difficult for users to clean the filter assembly.

[0014] Some embodiments of the present disclosure provide an air conditioner indoor unit 1000. As shown in Figures 1, 5, and 6, the air conditioner indoor unit 1000 includes a housing 100, a filtration assembly 200, a self-cleaning assembly 300, a drive assembly 400 (see Figure 7B), and a transmission assembly 500 (see Figure 11).

[0015] The housing 100 includes a front panel 191, a back panel 192, a first side panel 193, and a second side panel 194. The front panel 191 is the side panel that is farther from the wall when the air conditioner indoor unit is attached to the wall of a room. The back panel 192 is the side panel that is closer to the wall when the indoor unit is attached to the wall of a room. The first side panel 193 and the second side panel 194 are connected to the front panel 191 and the back panel 192, respectively, and extend along directions perpendicular to the front panel 191 and the back panel 192, respectively. For example, the first side panel 193 is the side panel on one side in the length direction of the housing 100 (i.e., the left-right direction in FIG. 1), and the second side panel 194 is the side panel on the other side in the length direction of the housing 100 (i.e., the left-right direction in FIG. 1). For example, the first side plate 193 is the left side plate of the air conditioner indoor unit 1000, and the second side plate 194 is the right side plate of the air conditioner indoor unit 1000.

[0016] The housing 100 has an air inlet 110. For example, a portion of the top of the housing 100 is opened to form the air inlet 110. The filter assembly 200 is installed within the housing 100 and is located at the air inlet 110. The filter assembly 200 is configured to filter air entering the air conditioner indoor unit 1000 from the air inlet 110 and prevent foreign matter in the air from entering the air conditioner indoor unit 1000. The self-cleaning assembly 300 is installed within the housing 100 and is configured to remove foreign matter adhering to the filter assembly 200.

[0017] The drive assembly 400 is installed on the housing 100, and the transmission assembly 500 is installed within the housing 100. The transmission assembly 500 is connected to the self-cleaning assembly 300 and the drive assembly 400, respectively, and is configured to move the self-cleaning assembly 300 under the driving of the drive assembly 400, causing the self-cleaning assembly 300 to remove foreign matter adhering to the filter assembly 200 and perform self-cleaning operations, thereby maintaining the cooling or heating efficiency of the air conditioner indoor unit 1000.

[0018] 2 and 5, the air conditioner indoor unit 1000 further includes an indoor heat exchanger 600, a fan assembly 700, and an air outlet. The indoor heat exchanger 600 is installed within the housing 100 and configured to exchange heat with indoor air entering through the air inlet 110. The fan assembly 700 is installed on the side of the indoor heat exchanger 600 away from the air inlet 110 and configured to draw in and pump out the indoor air.

[0019] For example, when the fan assembly 700 operates, the fan rotates to draw in indoor air through the air inlet 110, exchanges heat with the indoor heat exchanger 600, and then pumps out the indoor air that has been heat exchanged through the indoor heat exchanger 600 through the air outlet. The air conditioner indoor unit 1000 heats or cools the indoor air through the indoor heat exchanger 600, thereby raising or lowering the indoor temperature and achieving a heating or cooling effect.

[0020] 6, 7A, and 7B, the filtration assembly 200 includes a filter 210. The filter 210 is installed between the air inlet 110 and the indoor heat exchanger 600 (as shown in FIG. 5) and covers the air inlet 110, so that the filter 210 can filter out foreign matter in the air entering the air conditioner indoor unit 1000 through the air inlet 110.

[0021] The self-cleaning assembly 300 includes a base 310, a first cleaning brush 320, a first reel 330, and a second reel 340. The base 310 is disposed within the housing 100 and includes a mounting member 311 and a bracket 312. One side of the bracket 312 is connected to the side of the mounting member 311 closest to the back panel 192 and extends along the thickness direction of the air conditioner indoor unit 1000 (the front-to-rear direction in FIG. 7A ). A mounting cavity 313 is defined within the mounting member 311, and a top of the mounting cavity 313 is partially open. The bracket 312 is configured to support the filter 210. The filter 210 is mounted on the bracket 312 and is movable relative to the bracket 312.

[0022] The first cleaning brush 320, the first reel 330, and the second reel 340 are rotatably installed within the mounting cavity 313, and each extends along the length of the air conditioner indoor unit 1000. The first cleaning brush 320 includes a first bristle brush 321 and is configured to remove foreign matter adhering to the filter 210. The first cleaning brush 320 is installed adjacent to the first reel 330. The first reel 330 and the second reel 340 are installed with a gap between them and are approximately parallel. One end of the filter 210 is connected to the first reel 330, and the other end is connected to the second reel 340. The filter 210 is wound around the outer periphery of at least one of the first reel 330 and the second reel 340, and the filter 210 is stretched between the first reel 330 and the second reel 340.

[0023] 5, 10, and 11, transmission assembly 500 is mounted on base 310, and transmission assembly 500 is connected to first reel 330 and second reel 340, respectively. Transmission assembly 500 is connected to filter 210 via first reel 330 and second reel 340.

[0024] The drive assembly 400 is installed on the housing 100 and includes a drive gear 410. The drive gear 410 is connected to a power output end. The power output end of the drive assembly 400 is detachably connected to a transmission assembly 500. For example, the drive assembly 400 is a drive motor. The drive assembly 400 may drive the filter 210 to move along a predetermined trajectory by rotating the first reel 330 and the second reel 340 in opposite directions via the transmission assembly 500. That is, relative movement occurs between the first cleaning brush 320 and the filter 210, so that different regions of the filter 210 are positioned opposite the first cleaning brush 320.

[0025] For example, the drive assembly 400 rotates the first reel 330 and the second reel 340 via the transmission assembly 500 so that the filter 210 is wound up on the first reel 330 and wound down on the second reel 340, or the filter 210 is wound down on the first reel 330 and wound up on the second reel 340, thereby causing the filter 210 to be stretched between the first reel 330 and the second reel 340 and to move relative to the first cleaning brush 320. In this way, the first cleaning brush 320 can clean the area of ​​the filter 210 facing it.

[0026] The transmission assembly 500 includes a first driven gear 510, a second driven gear 520, a third driven gear 530, and an intermediate gear 540. The first driven gear 510 is attached to one end of the first reel 330, and the first driven gear 510 meshes with the drive gear 410. The second driven gear 520 is attached to one end of the second reel 340, and the second driven gear 520 meshes with the first driven gear 510. The third driven gear 530 is attached to one end of the first cleaning brush 320, and the third driven gear 530 meshes with the intermediate gear 540. Furthermore, the first driven gear 510 meshes with the intermediate gear 540.

[0027] During operation of the self-cleaning assembly 300, the drive assembly 400 operates to rotate the drive gear 410 on the power output end in a first direction, thereby rotating the first driven gear 510 in a second direction, thereby rotating the first reel 330 in the second direction. At the same time, the first driven gear 510 also rotates the second driven gear 520 in the first direction, thereby rotating the second reel 340 in the first direction.

[0028] In this way, under the action of the first reel 330 and the second reel 340, the filter 210 stretched between the first reel 330 and the second reel 340 moves along a predetermined trajectory, so that different areas on the filter 210 face the first cleaning brush 320 in turn, and the first cleaning brush 320 cleans different areas of the filter 210.

[0029] The first direction is opposite to the second direction. When the first reel 330 rotates in the first direction to wind up the filter 210, the second reel 340 rotates in the second direction to wind down the filter 210.

[0030] 7A, 7B, and 11, the first driven gear 510 rotates in a counterclockwise direction under the drive of the drive gear 410, causing the first reel 330 to rotate in a counterclockwise direction and wind up the filter 210. Then, while the first driven gear 510 rotates in a counterclockwise direction, it causes the second driven gear 520 to rotate in a clockwise direction, thereby causing the second reel 340 to rotate in a clockwise direction and wind up the filter 210.

[0031] It is understood that the first driven gear 510 rotates in a clockwise direction under the drive of the drive gear 410, causing the first reel 330 to rotate in a clockwise direction and wind down the filter 210, and then the first driven gear 510 rotates in a clockwise direction while simultaneously rotating the second driven gear 520 in a counterclockwise direction, thereby causing the second reel 340 to rotate in a counterclockwise direction and wind up the filter 210.

[0032] At the same time, the first driven gear 510 further rotates the intermediate gear 540 in the first direction, which in turn rotates the third driven gear 530 in the second direction, and thus rotates the first cleaning brush 320 in the second direction, so that the rotation direction of the first cleaning brush 320 is opposite to the movement direction of the filter 210, which is advantageous for improving the cleaning effect of the first cleaning brush 320 on the filter 210.

[0033] For example, since the first driven gear 510 and the second driven gear 520 have the same number of teeth, the rotation speeds of the first reel 330 and the second reel 340 are the same, so that the filter 210 is stretched on the first reel 330 and the second reel 340.

[0034] 10 , 11 , and 12 , the base 310 further includes a receiving cavity 314. One side of the mounting member 311 along the length direction of the air conditioner indoor unit 1000 is recessed toward the other side, thereby forming the receiving cavity 314. The transmission assembly 500 is installed in the receiving cavity 314, i.e., the first driven gear 510, the second driven gear 520, the third driven gear 530, and the intermediate gear 540 are each installed in the receiving cavity 314. Providing the receiving cavity 314 in the base 310 is advantageous for protecting and concealing the first driven gear 510, the second driven gear 520, the intermediate gear 540, and the third driven gear 530, for routing wires within the air conditioner indoor unit 1000, and for preventing operating components (e.g., the intermediate gear 540) from damaging other components (e.g., the fan assembly 700).

[0035] 12, the bottom side of the receiving cavity 314 is provided with a first opening 3141, a second opening 3142, and a third opening 3143 that communicate with the mounting cavity 313. As shown in FIG. 14, a first prism 511 is provided in the center of the first driven gear 510, and a first hole that fits the first prism 511 is provided at the end of the first reel 330. The first prism 511 passes through the first opening 3141 and is inserted into the first hole, thereby fixedly connecting the first driven gear 510 and the first reel 330.

[0036] A second prism 521 is provided in the center of the second driven gear 520, and a second hole that fits the second prism 521 is provided at the end of the second reel 340. The second prism 521 passes through a second opening 3142 and is inserted into the second hole, thereby fixedly connecting the second driven gear 520 and the second reel 340. A third prism 531 is provided in the center of the third driven gear 530, and a third hole that fits the third prism 531 is provided at the end of the first cleaning brush 320. The third prism 531 passes through a third opening 3143 and is inserted into the third hole, thereby fixedly connecting the third driven gear 530 and the first cleaning brush 320.

[0037] Installing the first opening 3141, the first prism 511, the first hole, the second opening 3142, the second prism 521, the second hole, the third opening 3143, the third prism 531 and the third hole within the air conditioner indoor unit 1000 is advantageous for realizing the connection between the first driven gear 510 and the first reel 330, the connection between the second driven gear 520 and the second reel 340, and the connection between the third driven gear 530 and the first cleaning brush 320, thereby improving the stability of rotation.

[0038] In this way, indoor air enters the housing 100 through the air inlet 110 under the action of the fan assembly 700, is filtered through the filter 210, and then flows to the indoor heat exchanger 600. The indoor air then undergoes heat exchange through the indoor heat exchanger 600 and is then blown out through the air outlet.

[0039] After the air conditioner indoor unit 1000 has been operating for a certain period of time, foreign matter in the indoor air is filtered through the filter 210 and then accumulates on the surface of the filter 210, causing a large amount of foreign matter to adhere to the filter 210, which may affect the filtering and suction effects of the filter 210. When a large amount of foreign matter adheres to the filter 210, the self-cleaning assembly 300 of the air conditioner indoor unit 1000 can remove the foreign matter adhered to the filter 210 and maintain the filtering ability of the filter 210, thereby improving the cooling or heating efficiency of the air conditioner indoor unit 1000.

[0040] 8A and 8B , first reel 330 includes first portion 331 and second portion 332, which are detachably connected to each other. Second reel 340 includes third portion 341 and fourth portion 342, which are detachably connected to each other. One end of filter 210 is sandwiched between first portion 331 and second portion 332, and the other end of filter 210 is sandwiched between third portion 341 and fourth portion 342.

[0041] Furthermore, by installing and clamping the first reel 330 and the second reel 340 as a two-part structure that is removably connected, and fixing both ends of the filter 210 to the first reel 330 and the second reel 340, respectively, the stability of the connection between the first reel 330 and the second reel 340 by the filter 210 can be improved, which is advantageous in maintaining the filter stretched between the first reel 330 and the second reel 340.

[0042] The first portion 331, the second portion 332, the third portion 341, and the fourth portion 342 each extend in the thickness direction of the air conditioner indoor unit 1000 (the front-to-rear direction shown in FIGS. 8A and 8B ), and have a striped structure with an arc-shaped cross section. The outer surfaces of the first portion 331, the second portion 332, the third portion 341, and the fourth portion 342 are smooth, which is advantageous for winding up and down the filter 210 onto the first reel 330 and the second reel 340.

[0043] A first locking portion 333 is provided on the inner surface of the first portion 331, and a second locking portion 334 is provided on the inner surface of the second portion 332. The first locking portion 333 and the second locking portion 334 are locked together, thereby detachably connecting the first portion 331 and the second portion 332. A third locking portion 343 is provided on the inner surface of the third portion 341, and a fourth locking portion 344 is provided on the inner surface of the fourth portion 342. The third locking portion 343 and the fourth locking portion 344 are locked together, thereby detachably connecting the third portion 341 and the fourth portion 342. Connecting the first portion 331 and the second portion 332, and the third portion 341 and the fourth portion 342 together using a locking connection in this manner is advantageous for the user to remove and clean the filter 210.

[0044] 2, 9, 10, and 15, an air conditioner indoor unit 1000 includes a plurality of filtration assemblies 200 and a plurality of self-cleaning assemblies 300. The housing 100 includes a plurality of air inlets 110. Each filtration assembly 200 corresponds to one self-cleaning assembly 300, and each air inlet 110 corresponds to one filtration assembly 200.

[0045] It is understood that installing multiple air intakes 110, multiple filter assemblies 200, and multiple self-cleaning assemblies 300 in the air conditioner indoor unit 1000 is advantageous in increasing the intake air volume and outlet air volume of the air conditioner indoor unit 1000, and therefore the cooling efficiency or heating efficiency of the air conditioner indoor unit 1000 can be improved.

[0046] The air conditioner indoor unit 1000 further includes a plurality of drive assemblies 400 and a plurality of transmission assemblies 500, and each drive assembly 400 corresponds to one transmission assembly 500. Each drive assembly 400 is connected to a filter assembly 200 via its corresponding transmission assembly 500. In this way, each filter assembly 200 can be driven individually to perform a self-cleaning operation.

[0047] 13 and 14 , the air conditioner indoor unit 1000 further includes at least one link 550. The multiple transmission assemblies 500 are connected via the link 550. The power output end of the drive assembly 400 is connected to the link 550. In this manner, the drive assembly 400 can drive the multiple self-cleaning assemblies 300 to operate via the link 550 and the multiple transmission assemblies 500, which is advantageous in simplifying the structure of the air conditioner indoor unit 1000.

[0048] In some embodiments, as shown in Figure 12, the base 310 further comprises a cutout 315. For example, the back plate of the receiving cavity 314 192 The side closer to the first driven gear 510 is open, and a notched opening 315 is formed. A part of the first driven gear 510 protrudes from the notched opening 315, and the driving gear 410 meshes with the part of the first driven gear 510.

[0049] It will be appreciated that the detachable connection between the transmission assembly 500 and the drive assembly 400 is achieved by the meshing between the first driven gear 510 and the drive gear 410. Providing the notch 315 in the base 310 is advantageous for achieving the meshing between the drive gear 410 and the first driven gear 510. When removing the transmission assembly 500, the drive gear 410 is not removed from the housing 100 together with the mounting member 311, but the first driven gear 510 is removed from the housing 100 together with the mounting member 311.

[0050] That is, the power output end of the drive assembly 400 and the transmission assembly 500 are detachably connected, but the transmission assembly 500 is connected to the self-cleaning assembly 300, and the filtration assembly 200 is connected to the self-cleaning assembly 300. Therefore, when a user needs to remove the filtration assembly 200 and the self-cleaning assembly 300 to clean them, the user can remove the base 310 from the housing 100 and remove the self-cleaning assembly 300 from the housing 100. At the same time, the drive assembly 400 is not removed from the housing 100 together with the transmission assembly 500, but the transmission assembly 500 is removed from the housing 100 together with the self-cleaning assembly 300.

[0051] In this manner, a user can remove and clean the filtration assembly 200 and the self-cleaning assembly 300 without touching the drive assembly 400, which advantageously avoids safety hazards associated with touching the drive assembly 400. Furthermore, because the drive assembly 400 is hidden within the housing 100, it is advantageously protected and can avoid damage from external influences.

[0052] 2 , the housing 100 further includes a through-hole 120 and a mounting groove 130. For example, a portion of the front side of the housing 100 is opened to form the through-hole 120. The mounting groove 130 is defined in the housing 100. The front side of the mounting groove 130 is open. The through-hole 120 communicates with the mounting groove 130 and is located above the mounting groove 130. The mounting member 311 is disposed in the mounting groove 130. The self-cleaning assembly 300 is disposed inside the mounting member 311, and the transmission assembly 500 is disposed outside the mounting member 311. The bracket 312 is installed in the housing 100 through the through-hole 120.

[0053] The first reel 330, the second reel 340, and the first cleaning brush 320 are installed in the mounting member 311, which is installed in the mounting groove 130. One side of the bracket 312 is connected to the mounting member 311 and extends rearward through the through-hole 120. Therefore, by removing the mounting member 311 from the mounting groove 130 through the through-hole 120, the user can remove the bracket 312 and the filter 210 together with the mounting member 311 from the housing 100, thereby realizing removal of the filtration assembly 200 and the self-cleaning assembly 300. This reduces the difficulty of removing and installing the filtration assembly 200 and the self-cleaning assembly 300, which is advantageous for facilitating the user's cleaning of the removed filtration assembly 200 and the self-cleaning assembly 300.

[0054] Similarly, the user can attach the mounting member 311 into the mounting groove 130 through the through hole 120, so that the bracket 312 and the filter 210 together with the mounting member 311 are attached to the housing 100, thereby realizing the installation of the filtration assembly 200 and the self-cleaning assembly 300.

[0055] 9, the air conditioner indoor unit 1000 further includes a position limiting block 160. The position limiting block 160 is rotatably installed on the front plate 191 of the housing 100 and is adjacent to the mounting groove 130. The position limiting block 160 is configured to be rotatably switched between a locked position and an unlocked position.

[0056] For example, when the position limiting block 160 is in the locked position, at least a portion of the position limiting block 160 is in front of the mounting member 311, preventing the mounting member 311 from sliding out of the mounting groove 130. When the position limiting block 160 is in the unlocked position, the position limiting block 160 is on the front panel 191 of the housing 100, allowing the mounting member 311 to slide forward and disengage from the mounting groove 130.

[0057] When the air conditioner indoor unit 1000 is operating, the position limiting block 160 is in the locked position to prevent the mounting member 311 from sliding out of the mounting groove 130. When the filtration assembly 200 needs to be cleaned, the mounting member 311 can be removed by rotating the position limiting block 160 to the unlocked position.

[0058] For example, the air conditioner indoor unit 1000 includes a plurality of position limiting blocks 160. Providing a plurality of position limiting blocks 160 in the housing 100 is advantageous for the user to attach and detach the filter assembly 200.

[0059] 15 , the self-cleaning assembly 300 further includes a dust collection box 350 and an ash removal box 360. The dust collection box 350 is mounted on the base 310 and positioned below the first cleaning brush 320. The dust collection box 350 is configured to collect foreign matter removed from the filter 210.

[0060] As shown in FIGS. 3 and 9, the air conditioner indoor unit 1000 further includes an insertion groove 150. The insertion groove 150 is provided in the front panel 191 of the housing 100. The ash dropping box 360 is installed in the insertion groove 150, and the ash dropping box 360 is located below the dust collection box 350. The insertion groove 150 has a first side wall 151 and a second side wall 152 that are spaced apart along the length direction of the air conditioner indoor unit 1000 (i.e., the left-right direction in FIG. 9). A first engagement groove 153 is provided in the first side wall 151, and a second engagement groove 154 is provided in the second side wall 152. As shown in FIG. 12, the ash dropping box 360 is provided with a first engagement block and a second engagement block that are spaced apart along the length direction of the air conditioner indoor unit 1000 (i.e., the left-right direction in FIG. 9).

[0061] The ash removal box 360 is removably mounted in the insertion groove 150 by the engagement between the first engagement block and the first engagement groove 153 and the engagement between the second engagement block and the second engagement groove 154 .

[0062] 15 and 16 , the self-cleaning assembly 300 further includes a second cleaning brush 370. The second cleaning brush 370 is installed in the dust collection box 350 and configured to brush foreign matter adhering to the first cleaning brush 320 into the dust collection box 350. The second cleaning brush 370 includes a second bristle brush 371, which is configured to be inserted into the first cleaning brush 320.

[0063] When the self-cleaning assembly is operating, some foreign matter may adhere to the first bristle brush 321, and the second bristle brush 371 can brush off the foreign matter adhered to the first bristle brush 321 into the dust collection box 350. Therefore, the first bristle brush 321 can contact the filter 210 without any foreign matter attached thereto and remove the foreign matter adhered to the filter 210. 210 This is advantageous in improving the cleaning effect.

[0064] 1 and 4 , the air conditioner indoor unit 1000 further includes a panel 800. The panel 800 is removably connected to the front side of the housing 100 and seals the through-hole 120. For example, when the air conditioner indoor unit 1000 is in operation, the panel 800 is installed to cover the front side of the housing 100, thereby harmonizing the appearance of the air conditioner indoor unit 1000. When the filtration assembly 200 and the self-cleaning assembly 300 need to be removed for cleaning, the panel 800 can be removed from the front side of the housing 100, and then the filtration assembly 200 and the self-cleaning assembly 300 can be removed from the housing 100 via the through-hole 120.

[0065] 2, a first fitting portion is provided on the inner surface of the panel 800, and a second fitting portion 140 is provided on the front side of the housing 100. The first fitting portion and the second fitting portion 140 are connected by engagement, so that the panel 800 is removably connected to the front side of the housing 100.

[0066] 17 , filter 210 includes filtering section 211 and blocking section 212 connected in sequence. Filtering section 211 is configured to filter air entering housing 100 through air inlet 110. Blocking section 212 is configured to block air entering housing 100 through air inlet 110.

[0067] For example, when filter 210 moves along a preset trajectory, filter 210 can move between a filtering position and a blocking position. When filter 210 is in the filtering position, filtering unit 211 covers suction port 110 and filters air entering housing 100 through suction port 110. When filter 210 is in the blocking position, blocking unit 212 covers suction port 110 and blocks air entering housing 100 through suction port 110.

[0068] When the air conditioner indoor unit 1000 is operating, the filter 210 is in the filtering position, and the filtering part 211 covers the air inlet 110 to filter the air entering through the air inlet 110. When the air conditioner indoor unit is stopped, the filter 210 moves from the filtering position to the blocking position, and the blocking part 212 covers the air inlet 110, so that the air and dust are blocked by the blocking part 212, preventing the dust from entering the inside of the housing 100.

[0069] It is understood that the filtering section 211 is an area having a plurality of small holes, and the plurality of holes on the filtering section 211 can filter foreign matter such as large particles of dust in the air and allow the filtered air to enter the housing 100. The blocking section 212 is an area without holes, and air and dust cannot pass through. For example, the blocking section 212 is made of a plastic film, and a heat-sealed section is provided between the blocking section 212 and the filtering section 211 to connect the blocking section 212 and the filtering section 211.

[0070] In this way, by providing the blocking section 212 in the filter 210, air and dust cannot enter the housing 100 when the air conditioner indoor unit 1000 is stopped, which prevents foreign matter such as dust from entering the inside of the housing 100 and prevents foreign matter such as dust from adhering to the indoor heat exchanger 600 or fan assembly 700 inside the housing 100. This makes it possible to keep the inside of the air conditioner indoor unit 1000 cleaner and is advantageous for improving the cooling or heating effect of the air conditioner indoor unit 1000.

[0071] In some embodiments, the air conditioner indoor unit 1000 further includes a sensor and a controller. The sensor is configured to send a signal to the controller indicating execution of a self-cleaning mode. For example, the signal is a signal instructing the air conditioner indoor unit 1000 to execute or stop the self-cleaning mode. When the amount of foreign matter on the filter 210 reaches a preset amount, the sensor sends a signal to the controller indicating execution of the self-cleaning mode. When the amount of foreign matter on the filter 210 is less than the preset amount, the sensor sends a signal to the controller indicating stop of the self-cleaning mode.

[0072] The controller is configured to receive a signal from the sensor, respond to the signal, and control the air conditioner indoor unit 1000 to perform the operation instructed by the signal. For example, when a signal indicating execution of a self-cleaning mode is received from the sensor, the controller controls the air conditioner indoor unit 1000 to execute the self-cleaning mode. When a signal indicating termination of the self-cleaning mode is received from the sensor, the controller controls the air conditioner indoor unit 1000 to terminate the self-cleaning mode.

[0073] For example, after the air conditioner indoor unit 1000 has been operating for a certain period of time, indoor air continues to flow from the air inlet 110 to the indoor heat exchanger 600 under the action of the fan assembly 700, and after heat exchange in the indoor heat exchanger 600, is sent into the room through the air outlet by the fan assembly 700. As a result, an increase in foreign matter adheres to the filter 210 facing the air inlet 110 in the air conditioner indoor unit 1000. When the amount of foreign matter on the filter 210 reaches a preset amount, the sensor sends a signal to the controller indicating that a self-cleaning mode is being executed.

[0074] The controller receives a signal indicating execution of the self-cleaning mode from the sensor and controls the air conditioner indoor unit 1000 to execute the self-cleaning mode. When the self-cleaning mode is executed, the drive assembly 400 rotates the first reel 330 and the second reel 340 in opposite directions via the transmission assembly 500, thereby driving the filter 210 to move along a preset trajectory. The first cleaning brushes 320 are installed opposite different areas of the filter 210 and can clean the areas of the filter 210 that are installed opposite them.

[0075] When the first reel 330 and the second reel 340 rotate in opposite directions, the first cleaning brush 320 comes into contact with the first reel 330 to remove foreign matter from the filter 210 wound around the first reel 330, and the foreign matter falls into the dust collection box 350, where it is collected. If there is a large amount of foreign matter in the dust collection box 350, the dust collection box 350 can be removed and cleaned.

[0076] Some embodiments of the present disclosure provide another air conditioner indoor unit 100A. As shown in Fig. 18 , the air conditioner indoor unit 100A includes a housing 10, an indoor heat exchanger 20, a fan assembly 30, at least one filter 40, at least one self-cleaning assembly 50, at least one drive assembly 60, and at least one transmission assembly 70.

[0077] As shown in Figures 19 to 21, the housing 10 includes a front panel 12, a back panel 13, a first side panel 14, and a second side panel 15. The front panel 12 is the side panel that is away from the wall when the air conditioner indoor unit is attached to the wall of a room. The back panel 13 is the side panel that is closest to the wall when the air conditioner indoor unit is attached to the wall of a room. The first side panel 14 and the second side panel 15 are connected to the front panel 12 and the back panel 13, respectively, and extend in a direction perpendicular to the front panel 12 and the back panel 13, respectively.

[0078] For example, the first side plate 14 is a side plate on one side in the length direction of the housing 10 (i.e., the left-right direction in FIG. 19), and the second side plate 15 is a side plate on the other side in the length direction of the housing 10. For example, the first side plate 14 is a side plate on the left side of the air conditioner indoor unit 100A, and the second side plate 15 is a side plate on the right side of the air conditioner indoor unit 100A.

[0079] The housing 10 has at least one air inlet 11 and an air outlet. A portion of the top of the housing 10 is open to form the air inlet 11. For example, as shown in Fig. 19, the housing 10 has two air inlets 11, which are respectively installed at the top of the housing 10 and spaced apart along the length of the housing 10.

[0080] A portion of the bottom of the housing 10 is open, forming the air outlet. The indoor heat exchanger 20 is provided within the housing 10 and configured to exchange heat with indoor air entering through the air inlet 11. The fan assembly 30 is installed on the side of the indoor heat exchanger 20 away from the air inlet 11 and configured to draw in and pump out the indoor air. For example, when the fan assembly 30 operates, the fan rotates to draw in indoor air through the air inlet 11, exchange heat with the indoor heat exchanger 20, and then pump the indoor air that has been heat exchanged by the indoor heat exchanger 20 through the air outlet.

[0081] It will be understood that indoor air enters the housing 10 through the air inlet 11 under the action of the fan assembly 30, is filtered by the filter 40, and then enters the indoor heat exchanger 20 for heat exchange. For example, when the air conditioner indoor unit 100A is in cooling mode, the indoor air exchanges heat with the indoor heat exchanger 20, and then forms cool air that is blown into the room through the air outlet.

[0082] In addition, the fan assembly 30 can guide indoor air from the air inlet 11 to the indoor heat exchanger 20, increase the amount of air suction entering the indoor heat exchanger 20 from the air inlet 11, and adjust the amount of air suction entering the indoor heat exchanger 20.

[0083] The filter 40 is installed between the air inlet 11 and the indoor heat exchanger 20, and covers the air inlet 11. The filter 40 is configured to filter the air entering the air conditioner indoor unit 100A from the air inlet 11, and to prevent foreign matter in the air from entering the air conditioner indoor unit 100A.

[0084] For example, when the air conditioner indoor unit 100A is operating, indoor air that enters the housing 10 through the air inlet 11 first passes through the filter 40 and is filtered by the filter 40 before entering the indoor heat exchanger 20, thereby preventing foreign matter in the indoor air from entering the indoor heat exchanger 20 and preventing the foreign matter from accumulating in the indoor heat exchanger 20 and causing clogging and reducing the heat exchange efficiency of the indoor heat exchanger 20. The indoor air that has undergone heat exchange by the indoor heat exchanger 20 is blown out from the air outlet under the action of the fan assembly 30.

[0085] The self-cleaning assembly 50 is installed within the housing 10 and is configured to clean foreign matter adhering to the filter 40. The drive assembly 60 is installed on the housing 10, and the transmission assembly 70 is installed within the housing 10. The drive assembly 60 is configured to drive the transmission assembly 70 to rotate. The transmission assembly 70 is connected to the self-cleaning assembly 50 and the drive assembly 60, respectively, and is configured to move the self-cleaning assembly under the drive of the drive assembly 60, causing the self-cleaning assembly 50 to remove foreign matter adhering to the filter 40, thereby maintaining the cooling or heating efficiency of the air conditioner indoor unit 100A.

[0086] 23 , the self-cleaning assembly 50 includes a base 51, a second reel 53, a first reel 52, a cleaning brush assembly 54, and a dust collection box 55. The base 51 is disposed within the housing 10 and is adjacent to the front panel 12. The base 51 includes a base main body 511A and a bracket 512. One side of the bracket 512 is connected to the side of the base main body 511A closer to the back panel 13 and extends along the thickness direction of the housing 10 (i.e., the front-to-rear direction shown in FIG. 19 ). The bracket 512 is configured to support the filter 40. The filter 40 is mounted on the bracket 512 and may move along a predetermined trajectory on the bracket 512.

[0087] The second reel 53, the first reel 52, and the cleaning brush assembly 54 are rotatably connected to the base main body 511A, and each extends along the length of the housing 10. The second reel 53 and the first reel 52 are spaced apart and substantially parallel to each other. One end of the filter 40 is connected to the second reel 53, and the other end is connected to the first reel 52. The filter 40 is wound around the outer periphery of at least one of the second reel 53 and the first reel 52, and the filter 40 is stretched between the second reel 53 and the first reel 52. The cleaning brush assembly 54 is located adjacent to the first reel 52 and is configured to clean foreign matter on the filter 40 when the first reel 52 winds up or unwinds the filter 40.

[0088] The self-cleaning assembly 50 further includes a cleaning cavity 56. The cleaning cavity 56 is defined within the base main body 511A. The cleaning cavity 56 includes a first opening 563 and a second opening 564. The top of the cleaning cavity 56 is open, forming the first opening 563. The bottom of the cleaning cavity 56 is open, forming the second opening 564. The second reel 53 is located above the first opening 563, the first reel 52 is located in the first opening 563, and the cleaning brush assembly 54 is located within the cleaning cavity 56. The dust collection box 55 is located below the second opening 564 and is configured to contain foreign matter swept off the filter 40 by the cleaning brush assembly 54.

[0089] In some embodiments, the second reel 53 and the first reel 52 rotate in opposite directions. During cleaning by the self-cleaning assembly 50, the filter 40 is wound up on the first reel 52 and unwound on the second reel 53, or the filter 40 is unwound on the first reel 52 and unwound on the second reel 53. At least a portion of the cleaning brush assembly 54 contacts the filter 40, and as the filter 40 is wound up and unwound, the cleaning brush assembly 54 moves relative to the filter 40. The cleaning brush assembly 54 can be installed opposite different areas of the filter 40, and different areas of the filter 40 can be cleaned. Foreign matter on the filter 40 is removed by the cleaning brush assembly 54 and collected in a dust collection box 55.

[0090] 21 and 24 , the cleaning brush assembly 54 includes a cleaning brush base 541, a cleaning brush 542, and at least one elastic member 543. The cleaning brush 542 is provided on the cleaning brush base 541. The cleaning brush base 541 includes a first mounting portion 5411 and a second mounting portion 5412. The first mounting portion 5411 is provided on and connected to the second mounting portion 5412. One end of any one of the at least one elastic members 543 abuts against the first mounting portion 5411 and the other end abuts against the second mounting portion 5412.

[0091] For example, the elastic material 543 is a spring. The cleaning brush 542 is provided on the side of the first mounting portion 5411 away from the second mounting portion 5412. When the cleaning brush 542 abuts against the first reel 52, the first reel 52 applies a force to the cleaning brush 542, i.e., the first reel 52 applies a force to the first mounting portion 5411, thereby causing the first mounting portion 5411 to compress the elastic material 543.

[0092] Because the second mounting portion 5412 does not move in the height direction of the housing 10 (i.e., the up-and-down direction in FIG. 19 ), the elastic member 543 applies an elastic force to the first mounting portion 5411 of the same magnitude but opposite direction as the cleaning brush 542 applies force to the first reel 52, thereby elastically abutting the cleaning brush 542 against the first reel 52. The cleaning brush base 541 abuts the cleaning brush 542 against the first reel 52 via the elastic member 543, ensuring that the cleaning brush 542 always abuts against the first reel 52 while the first reel 52 or the cleaning brush base 541 is rotating. This is advantageous for improving the cleaning ability of the cleaning brush 542 for the filter 40 wound around the first reel 52. At the same time, excessive wear of the cleaning brush 542 due to hard contact between the first reel 52 and the cleaning brush 542 is avoided, thereby extending the service life of the cleaning brush 542.

[0093] It will be understood that the cleaning brush 542 abuts against the first reel 52 via the elastic material 543, and when the second reel 53 and the first reel 52 rotate in opposite directions, the cleaning brush 542 abuts against the first reel 52 and can clean the filter 40 that has moved to the abutment area, so that foreign matter brushed off from the filter 40 falls into the dust collection box 55 and is collected. Because the first reel 52 vibrates or vibrates radially during rotation, the elasticity of the elastic material 543 improves the stability of the abutment between the cleaning brush 542 and the first reel 52 and is advantageous in avoiding hard contact between the first reel 52 and the cleaning brush 542.

[0094] For example, after the air conditioner indoor unit 100A has been operating for a certain period of time, indoor air continues to flow into the indoor heat exchanger 20 under the action of the fan assembly 30, undergoes heat exchange by the indoor heat exchanger 20, and is then sent into the room. After the indoor air that has entered the indoor heat exchanger 20 is filtered through the filter 40, foreign matter in the indoor air accumulates on the surface of the filter 40, increasing the amount of foreign matter adhering to the filter 40 and affecting the filtering and suction effects of the filter 40.

[0095] When a large amount of foreign matter adheres to the filter 40, the air conditioner indoor unit 100A executes the self-cleaning mode to clean the foreign matter adhered to the filter 40 and maintain the filtering ability of the filter 40, thereby improving the cooling or heating efficiency of the air conditioner indoor unit 100A. When the air conditioner indoor unit 100A executes the self-cleaning mode, the second reel 53 and the first reel 52 rotate, causing the filter 40 to be wound up on the second reel 53 and then wound down on the first reel 52, or the filter 40 to be wound down on the second reel 53 and then wound up on the first reel 52. The filter 40 moves relative to the cleaning brush 542 under the action of the second reel 53 and the first reel 52, so that the cleaning brush 542 is positioned opposite different areas of the filter 40 and cleans different areas of the filter 40.

[0096] In some embodiments, as shown in FIGS. 20 , 21 , and 25 , the dust collection box 55 includes a dust collection box main body 551 and an engagement hole 553. The engagement hole 553 is provided at one end of the dust collection box main body 551 along the length of the housing 10. The housing 10 further includes a positioning tool, which is provided on a side panel along the length of the housing 10. The dust collection box 55 and the housing 10 are detachably connected by fitting and engaging the engagement hole 553 with the positioning tool. When foreign objects need to be cleaned from the dust collection box 55, the dust collection box 55 can be removed from the housing 10 via the engagement hole 553 and the positioning tool, and the foreign objects inside the dust collection box 55 can be cleaned.

[0097] As shown in FIG. 25, dust collection box 55 further includes a baffle plate 552. Baffle plate 552 is provided on the front side of dust collection box main body 551. One end of baffle plate 552 is connected to dust collection box main body 551, and the other end of baffle plate 552 extends upward along the height direction of housing 10 (i.e., the up-and-down direction shown in FIG. 19). Baffle plate 552 is configured to seal a gap between the front side of dust collection box 55 and the front side of base 51 when dust collection box 55 is assembled to base 51, thereby preventing foreign matter inside dust collection box 55 from spilling out through the gap.

[0098] 24 , the cleaning brush assembly 54 further includes a mounting cavity 544. The second mounting portion 5412 has an open side facing the cleaning brush 542, and the first mounting portion 5411 is provided on the open side of the second mounting portion 5412. The first mounting portion 5411 and the second mounting portion 5412 define the mounting cavity 544. The elastic material 543 is installed in the mounting cavity 544. Both ends of the elastic material 543 are connected to the first mounting portion 5411 and the second mounting portion 5412 so as to abut against each other. Therefore, when the first mounting portion 5411 is pressed, the first mounting portion 5411 can move toward the second mounting portion 5412. Thus, providing the cleaning brush assembly 54 with the mounting cavity 544 is advantageous for mounting the elastic material 543 and prevents the elastic material 543 from slipping out of the cleaning brush base 541.

[0099] 24 , the cleaning brush assembly 54 further includes at least one positioning post 545. Any one of the at least one positioning post 545 is provided on either the first mounting portion 5411 or the second mounting portion 5412. The elastic member 543 is installed by fitting onto any one of the positioning posts 545.

[0100] For example, if the cleaning brush assembly 54 includes two positioning posts 545 and two elastic members 543, and the two positioning posts 545 are provided on the second mounting portion 5412, the two positioning posts 545 are provided on both ends of the second mounting portion 5412 along the length direction of the housing 10. The elastic members 543 are installed by being fitted into the positioning posts 545. Providing the positioning posts 545 on the cleaning brush assembly 54 in this manner is advantageous for realizing positional restriction and mounting of the elastic members 543, and the elastic members 543 move along the height direction of the housing 10, and the first mounting portion 5411 moves the cleaning brush 542 relative to the second mounting portion 5412.

[0101] In some embodiments, as shown in FIG. 24 , the cleaning brush base 541 further includes at least one engagement groove 5414 and at least one locking member 5415. The at least one engagement groove 5414 is provided on at least one of both side walls of the first mounting portion 5411 along the width direction of the housing 10. The at least one locking member 5415 is provided on at least one of both side walls of the second mounting portion 5412 along the width direction of the housing 10. The locking member 5415 and the engagement groove 5414 fit together to connect the first mounting portion 5411 to the second mounting portion 5412. When the locking member 5415 is engaged in the engagement groove 5414, the locking member 5415 may move within the engagement groove 5414 along the height direction of the housing 10.

[0102] For example, when at least one first mounting portion 5411 has a plurality of engagement grooves 5414, the plurality of engagement grooves 5414 are provided at intervals on both side walls of the first mounting portion 5411 along the width direction of the housing 10. Corresponding to the plurality of engagement grooves 5414, a plurality of locking devices 5415 are provided on both side walls of the second mounting portion 5412 along the width direction of the housing 10, and the plurality of locking devices 5415 are provided at intervals along the length direction of the housing 10.

[0103] When the first mounting portion 5411 fits and engages with the second mounting portion 5412, the multiple engagement grooves 5414 fit and engage with the multiple locking devices 5415, thereby realizing the attachment of the first mounting portion 5411 and the second mounting portion 5412.

[0104] For example, by making the length of the engagement groove 5414 along the height direction of the housing 10 greater than the length of the locking device 5415 along the height direction of the housing 10, the first mounting portion 5411 can move relative to the second mounting portion 5412 along the height direction of the housing 10.

[0105] It will be understood that when the cleaning brush 542 comes into contact with the first reel 52, the first mounting portion 5411 moves toward the second mounting portion 5412. When the cleaning brush 542 is separated from the first reel 52, the first mounting portion 5411 moves in a direction away from the second mounting portion 5412. In this way, the first mounting portion 5411 and the second mounting portion 5412 are engaged with each other by fitting the engagement groove 5414 into the locking device 5415. This is advantageous for improving the efficiency of assembling the first mounting portion 5411 and the second mounting portion 5412, simplifying the structure of the cleaning brush base 541, and improving the stability of the assembly of the first mounting portion 5411 and the second mounting portion 5412.

[0106] Furthermore, when the locking device 5415 is engaged in the engagement groove 5414, the locking device 5415 moves relative to the engagement groove 5414, which is advantageous for realizing movement of the first mounting portion 5411 relative to the second mounting portion 5412, and abutting the cleaning brush 542 against the first reel 52, thereby improving the cleaning efficiency of the cleaning brush 542 on the filter 40.

[0107] 23 to 25 , the first mounting portion 5411 includes a first side portion 5416, a second side portion 5417, and a connecting portion 5413. Both ends of the connecting portion 5413 along the thickness direction of the housing 10 are connected to the upper sides of the first side portion 5416 and the second side portion 5417, respectively. The lower sides of the first side portion 5416 and the second side portion 5417 extend toward the second mounting portion 5412 along the height direction of the housing 10. The first side portion 5416, the second side portion 5417, and the connecting portion 5413 together constitute the first mounting portion 5411.

[0108] The first side portion 5416 and the second side portion 5417 extend toward the second mounting portion 5412. One end of the elastic material 543 abuts against the connecting portion 5413, and the other end of the elastic material 543 is fitted into a positioning post 545 provided on the second mounting portion 5412. The first side portion 5416 and the second side portion 5417 are connected to the second mounting portion 5412 by fitting and engaging an engagement groove 5414 with a locking member 5415. When the first mounting portion 5411 and the second mounting portion 5412 are assembled together, the first side portion 5416 and the second side portion 5417 are located outside both side walls of the second mounting portion 5412 along the thickness direction of the housing 10, forming a positional restriction for the second mounting portion 5412 and preventing the elastic material 543 from slipping out.

[0109] The cleaning brush base 541 has a first side portion 5416, a second side portion 5417 and a connecting portion 5413 to form a first mounting portion 5411, which gives the first mounting portion 5411 good structural strength and is advantageous for mounting the first mounting portion 5411 and the cleaning brush 542, making the mounting of the cleaning brush 542 more solid and preventing the cleaning brush 542 from falling off the cleaning brush base 541.

[0110] In some embodiments, as shown in FIGS. 24 and 25 , the self-cleaning assembly 50 further includes a mounting groove 57. The mounting groove 57 is provided on the side of the connecting portion 5413 away from the second mounting portion 5412. The cleaning brush 542 is provided within the mounting groove 57. The bottom surface of the mounting groove 57 is flush with the surface of the cleaning brush 542 closer to the first reel 52 and is formed in an arc shape. This allows the cleaning brush 542 to clean the filter 40 when it contacts the first reel 52, and allows foreign matter generated during cleaning to fall from the surface of the cleaning brush 542 into the cleaning cavity 56. Thus, providing the mounting groove 57 in the self-cleaning assembly 50 is advantageous for mounting the cleaning brush 542, improving the stability of the mounting of the cleaning brush 542 and improving the positional restriction of the first mounting portion 5411 relative to the cleaning brush 542.

[0111] 21, 22, and 25, the self-cleaning assembly 50 is connected to two transmission assemblies 70. The drive assembly 60 is connected to one of the two transmission assemblies 70. The two transmission assemblies 70 are disposed at opposite ends of the self-cleaning assembly 50 along the length of the housing 10. The drive assembly 60 is disposed at one end of the housing 10 along the length of the housing 10.

[0112] The transmission assembly 70 includes a first gear 71, a second gear 72, and a third gear 73. The first gear 71 meshes with the second gear 72. In the two transmission assemblies 70, the two first gears 71 are provided at both ends of the second reel 53, the two second gears 72 are provided at both ends of the first reel 52, and the two third gears 73 are provided at both ends of the cleaning brush base 541.

[0113] The drive assembly 60 includes a first drive motor 61 and a second drive motor 62. The first drive motor 61 is connected to one of the first gear 71 and the second gear 72 and configured to drive either the first gear 71 or the second gear 72 to rotate. The second drive motor 62 is connected to the third gear 73 and configured to drive the third gear 73 to rotate.

[0114] Taking the connection between the first drive motor 61 and the second gear 72 as an example, when the self-cleaning assembly 50 performs the self-cleaning mode, the first drive motor 61 drives the second gear 72 to rotate in a first direction, causing the first reel 52 to rotate in the first direction. At the same time, the second gear 72 further drives the first gear 71 to rotate in a second direction, thereby causing the second reel 53 to rotate in the second direction. The second drive motor 62 drives the third gear 73 to rotate, thereby rotating the cleaning brush base 541.

[0115] The first direction is opposite to the second direction. When the second reel 53 rotates in the second direction to wind down the filter 40, the first reel 52 rotates in the first direction to wind up the filter 40.

[0116] In this way, under the action of the second reel 53 and the first reel 52, the filter 40 stretched between the second reel 53 and the first reel 52 moves along a predetermined trajectory, and relative movement occurs between the cleaning brush 542 and the filter 40, allowing the cleaning brush 542 to clean the filter 40.

[0117] It will be understood that both ends of the second reel 53 are respectively connected to the first gear 71, and the second reel 53 realizes a rotational connection with the base 51 via the first gear 71. Both ends of the first reel 52 are respectively connected to the second gear 72, and the first reel 52 realizes a rotational connection with the base 51 via the second gear 72. Both ends of the cleaning brush base 541 are respectively connected to the third gear 73, and the cleaning brush base 541 realizes a rotational connection with the base 51 via the third gear 73.

[0118] 20 to 22, the air conditioner indoor unit 100A includes two self-cleaning assemblies 50, two drive assemblies 60, and four transmission assemblies 70. One self-cleaning assembly 50, one drive assembly 60, and two transmission assemblies 70 constitute a self-cleaning device, i.e., the air conditioner indoor unit 100A includes two such self-cleaning devices. The two self-cleaning assemblies 50 are provided at an interval along the length of the housing 10.

[0119] Taking one of the self-cleaning devices as an example, the self-cleaning assembly 50 is connected to two transmission assemblies 70, and the two transmission assemblies 70 are respectively installed at both ends of the self-cleaning assembly 50. The drive assembly 60 is connected to the transmission assembly 70 near the side wall of the housing 10. The drive assembly 60 drives the transmission assembly 70 to rotate, thereby rotating the self-cleaning assembly 50.

[0120] Since a transmission assembly 70 is provided at each end of the two self-cleaning assemblies 50, there is no need to distinguish between the left and right sides when installing the self-cleaning assemblies 50 in the housing 10, which is advantageous in improving the installation efficiency of the self-cleaning assemblies 50.

[0121] 26 , the drive assembly 60 further includes a housing portion 63 and a folding portion 64. The housing portion 63 is connected to the housing 10. The folding portion 64 is provided on a side of the housing portion 63 along the width direction of the housing 10, and a free end of the folding portion 64 extends along the length direction of the housing 10 toward the base 51. The folding portion 64, the housing portion 63, and the base 51 define an accommodation space, and the first drive motor 61 and the second drive motor 62 are provided in the accommodation space. This is advantageous in reducing the intrusion of moisture and dust in the air into the accommodation space, preventing damage to the first drive motor 61 and the second drive motor 62, and extending the service life of the drive assembly 60.

[0122] In some embodiments, as shown in FIGS. 25 and 26 , the base 51 further includes two end covers 514 and a connecting plate 516. The two end covers 514 are provided at both ends of the base 51 along the length of the housing 10. The connecting plate 516 connects the two end covers 514 and is located on the side of the two end covers that is away from the back plate 13. The connecting plate 516 includes a grip portion 5161, which is provided on the top of the connecting plate 516. As shown in FIG. 27 , the grip portion 5161 includes a plurality of grooves that are recessed in the connecting plate 516 along the height of the housing 10 toward the dust collection box 55. The plurality of grooves are provided continuously along the length of the housing 10. This provides a convenient grip for the user when attaching or detaching the self-cleaning assembly 50, improving the efficiency of assembling the self-cleaning assembly 50.

[0123] 25 and 26, the base 51 further includes a base front cover 513. The base front cover 513 is provided on the front side of the housing 10 and is located below the connecting plate 516. The lower end of the base front cover 513 is detachably connected to the base main body 511A. The upper end of the base front cover 513 is rotatably connected to the base main body 511A.

[0124] The base front cover 513 is configured to open and close the front side of the cleaning cavity 56. This is advantageous for cleaning the cleaning brush 542 in the cleaning cavity 56 and improving the working efficiency of the cleaning brush 542. Furthermore, if a component in the self-cleaning assembly 50 breaks down, the component in the self-cleaning assembly 50 can be maintained through the base front cover 513, and this is also advantageous for installing and removing components in the self-cleaning assembly 50 (e.g., the second reel 53, the first reel 52, and the cleaning brush 542).

[0125] For example, as the self-cleaning assembly 50 operates for a long period of time, the ability of the cleaning brush 542 to brush off foreign matter on the filter 40 decreases. When the cleaning brush 542 needs to be cleaned, the cleaning brush 542 in the cleaning cavity 56 can be cleaned by opening the base front cover 513.

[0126] 25 , the base front cover 513 includes a rotation shaft 5131. The rotation shafts 5131 are provided on both ends of the base front cover 513 along the longitudinal direction of the housing 10. The base main body 511A further includes a rotation shaft hole, which is provided on the base main body 511A. The rotation shaft 5131 is fitted into and engaged with the rotation shaft hole, thereby realizing a rotational connection between the base front cover 513 and the base main body 511A. In this way, when the base front cover 513 is opened, the lower side of the base front cover 513 is flipped upward, thereby opening the front side of the cleaning cavity 56.

[0127] 24 and 25 , the cleaning brush assembly 54 further includes at least one position limiting portion 546. The at least one position limiting portion 546 is provided at one end of the cleaning brush base 541 along the length direction of the housing 10. For example, the at least one position limiting portion 546 includes one position limiting portion 546, and the one position limiting portion 546 is provided at one end of the second mounting portion 5412 along the length direction of the housing 10. For example, the at least one position limiting portion 546 includes two position limiting portions 546, and the two position limiting portions 546 are provided at both ends of the second mounting portion 5412 along the length direction of the housing 10, respectively.

[0128] 27, the cleaning brush assembly 54 further includes a stopper portion 547. The stopper portion 547 is provided on the inner wall of the cleaning cavity 56.

[0129] The position limiting portion 546 is configured to abut against the stopper portion 547 to limit the rotation angle of the cleaning brush assembly 54. When the cleaning brush assembly 54 is operated and the position limiting portion 546 abuts against the stopper portion 547, the cleaning brush 542 abuts against the first reel 52 and cleans foreign matter on the filter 40 at the abutment. Providing the position limiting portion 546 and the stopper portion 547 on the cleaning brush assembly 54 is advantageous for limiting the rotation angle of the cleaning brush assembly 54, allowing the cleaning brush 542 to accurately abut against the first reel 52 under the action of the cleaning brush base 541, thereby achieving cleaning of the filter 40 and reducing the possibility of the cleaning brush 542 being offset when abutting against the filter 40.

[0130] For example, at least one position limiting portion 546 includes a first position limiting protrusion 5461 and a second position limiting protrusion 5462. The first position limiting protrusion 5461 and the second position limiting protrusion 5462 are provided at ends of the second mounting portion 5412 along the length direction of the housing 10, and are provided symmetrically along the radial direction of the second mounting portion 5412.

[0131] By configuring the position limiting portion 546 to rotate to the first position, the first position limiting protrusion 5461 abuts against the stopper portion 547, and the cleaning brush 542 does not contact the first reel 52. Furthermore, by configuring the position limiting portion 546 to rotate to the second position, the second position limiting protrusion 5462 abuts against the stopper portion 547, and the cleaning brush 542 abuts against the first reel 52.

[0132] For example, when the cleaning brush assembly 54 rotates clockwise and the position limiting portion 546 rotates to the first position, the first position limiting protrusion 5461 abuts against the stopper portion 547, which limits the position limiting portion 546 from continuing to rotate, the cleaning brush 542 does not contact the first reel 52, the first position limiting protrusion 5461 is located below the second position limiting protrusion 5462, and the cleaning brush 542 is located below the central axis of the cleaning brush base 541.

[0133] When the cleaning brush assembly 54 rotates counterclockwise and the position limiting portion 546 rotates to the second position, the second position limiting protrusion 5462 abuts against the stopper portion 547, which restricts the position limiting portion 546 from continuing to rotate, and the cleaning brush 542 abuts against the first reel 52, cleaning foreign matter on the filter 40 at the abutment.

[0134] The abutment between the second position limiting protrusion 5462 and the stopper portion 547 is advantageous in that it abuts the cleaning brush 542 against the first reel 52, thereby preventing the cleaning brush 542 from shifting position with the filter 40 under the action of inertia, thereby reducing the cleaning effect of the cleaning brush 542.

[0135] 27 , the stopper portion 547 includes a first stopper surface 5471 and a second stopper surface 5472. When the position limiting portion 546 rotates to the first position, the first position limiting protrusion 5461 abuts against the first stopper surface 5471, and the cleaning brush 542 does not contact the first reel 52. When the position limiting portion 546 rotates to the second position, the second position limiting protrusion 5462 abuts against the second stopper surface 5472, and the cleaning brush 542 abuts against the first reel 52 to brush off foreign matter on the filter 40.

[0136] One end of first stopper surface 5471 is connected to one end of second stopper surface 5472, and first stopper surface 5471 is located below second stopper surface 5472. The other end of first stopper surface 5471 extends obliquely downward along the thickness direction of housing 10 in a direction approaching back plate 13. The other end of second stopper surface 5472 extends obliquely upward along the thickness direction of housing 10 in a direction approaching back plate 13.

[0137] For example, when the cleaning brush base 541 rotates clockwise and the position limiter 546 rotates to the first position, the first position limiter protrusion 5461 abuts against the first stopper surface 5471. The first stopper surface 5471 limits the first position limiter protrusion 5461 from continuing to rotate, the cleaning brush 542 does not contact the first reel 52, the first position limiter protrusion 5461 is positioned below the second position limiter protrusion 5462, and the cleaning brush 542 is positioned below the central axis of the cleaning brush base 541.

[0138] As the cleaning brush base 541 rotates counterclockwise and the position limiting portion 546 rotates from the first position to the second position, the first position limiting protrusion 5461 changes from a state of abutting against the first stopper surface 5471 to a state of being released, and then the second position limiting protrusion 5462 abuts against the second stopper surface 5472, causing the cleaning brush 542 to abut against the first reel 52 and clean the filter 40.

[0139] In this way, providing the stopper portion 547 with the first stopper surface 5471 and the second stopper surface 5472 is advantageous for the abutment between the first position limiting protrusion 5461 and the second position limiting protrusion 5462 and the stopper portion 547, improving the stability and reliability of the abutment between the position limiting portion 546 and the stopper portion 547 and reducing rotational errors of the cleaning brush assembly 54.

[0140] 23, 25, and 26, the self-cleaning assembly 50 further includes a cleaning component 59. The cleaning component 59 is provided on a side of the base front cover 513 that is closer to the cleaning cavity 56. For example, the cleaning component 59 and the base front cover 513 may be connected by adhesive or an engaging structure. The cleaning component 59 is provided on a side wall of the cleaning cavity 56 that faces the stopper portion 547. When the position limiting portion 546 rotates back and forth between the first position and the second position, the cleaning component 59 is configured to clean foreign matter on the cleaning brush 542.

[0141] For example, the stopper portion 547 is provided on the rear wall of the cleaning cavity 56, and the cleaning element 59 is provided on the front wall of the cleaning cavity 56. When there is a lot of foreign matter on the filter 40 and the filter 40 needs to be cleaned, the cleaning brush 542 comes into contact with the first reel 52 and cleans the filter 40 as the position limiting portion 546 rotates from the first position to the second position. As the position limiting portion 546 rotates from the first position to the second position, the cleaning element 59 comes into contact with the cleaning brush 542 and cleans the foreign matter on the cleaning brush 542, keeping the cleaning brush 542 relatively clean.

[0142] In this way, when the second position limiting protrusion 5462 abuts against the stopper portion 547 again, the cleaning brush 542 cleaned by the cleaning part 59 can better clean foreign matter on the filter 40, thereby improving the cleaning effect of the cleaning brush assembly 54 on the filter 40.

[0143] 23 and 25 , the base front cover 513 further includes a deflecting section 5132 and an extending section 5133. The deflecting section 5132 is located between the two end covers 514, and the deflecting section 5132 protrudes in a direction away from the central axis of the cleaning brush 542. The rotation shaft 5131 is connected to the side of the deflecting section 5132 that is away from the cleaning brush 542. The extending section 5133 extends along the height direction of the housing 10. The upper end of the extending section 5133 is connected to the lower end of the deflecting section 5132, and the lower end of the extending section 5133 fits and engages with the dust collection box 55.

[0144] The base front cover 513 is part of the cleaning cavity 56 and is configured to form a seal with the cleaning cavity 56 on the front side thereof. The clearance section 5132 is located above the extension section 5133 and faces the cleaning brush 542 in the thickness direction of the housing 10. The rotation shaft 5131 is provided on the side of the clearance section 5132 that faces away from the cleaning brush 542. When the base front cover 513 is fitted and engaged with the base main body 511A, one end of the extension section 5133 that faces away from the clearance section 5132 in the height direction of the housing 10 fits and engages with the upper part of the dust collection box 55. That is, when the dust collection box 55 is assembled to the base main body 511A, the upper part of the dust collection box 55 fits and engages with the base front cover 513, thereby forming a seal with the cleaning cavity 56 on the front and lower sides of the base main body 511A.

[0145] 23 , the clearance section 5132 is formed in an arc shape protruding away from the central axis of the cleaning brush 542, and the center line of the clearance section 5132 overlaps with the central axis of the cleaning brush 542. This is advantageous for avoiding interference between the base front cover 513 and the cleaning brush 542 when the base front cover 513 is mated and engaged with the base main body 511A. This is also advantageous for increasing the space utilization rate of the base 51, limiting the gap between the base front cover 513 and the cleaning brush 542, and allowing dust and particulate matter generated during the rotation of the cleaning brush 542 to fall intensively along the clearance section 5132 into the dust collection box 55, thereby reducing the amount of dust flying in the cleaning cavity 56 and reducing the volume of the self-cleaning assembly 50.

[0146] 23, the base 51 further includes a base rear cover 515. The base rear cover 515 is disposed between the two end covers 514 and is disposed behind the cleaning cavity 56 along the thickness direction of the housing 10. The base rear cover 515 faces the base front cover 513 and is rotatably connected to the base main body 511A. The base rear cover 515 includes a connecting groove, which is provided on the base rear cover 515. The side of the connecting groove facing the cleaning brush assembly 54 is open. A sealant is provided within the connecting groove.

[0147] When the base rear cover 515 is closed to close the rear side of the cleaning cavity 56, the sealant is configured to seal the gap between the base rear cover 515 and the first reel 52. When the base rear cover 515 is opened to open the rear side of the cleaning cavity 56, the sealant and the first reel 52 are separated from each other. That is, when the base rear cover 515 is connected to the base main body 511A, the connecting groove is provided on the side of the base main body 511A facing the first reel 52, and the sealant is provided in the connecting groove and is removably connected to the connecting groove.

[0148] The rear side of the sealing material is located within the connecting groove, and the front side of the sealing material extends from the connecting groove and abuts against the first reel 52. For example, the sealing material is a sponge foamed from polyurethane having high resilience.

[0149] In this way, providing the connecting groove in the base rear cover 515 and providing the sealing material in the connecting groove allows the first opening 563 of the cleaning cavity 56 to abut against the first reel 52 via the sealing material, forming a seal for the first opening 563, which is advantageous in preventing dust in the cleaning cavity 56 from flowing into the fan assembly 30 or the indoor heat exchanger 20 and extending the service life of the air conditioner indoor unit 100A.

[0150] 23 , the width of the second opening 564 slopes downward along the height of the housing 10, i.e., the cross-sectional area of ​​the second opening 564 decreases downward along the height of the housing 10. The second opening 564 is located at the bottom of the cleaning cavity 56. The opening of the second opening 564 is larger at the end closer to the cleaning cavity 56 and smaller at the end closer to the dust collection box 55.

[0151] When the cleaning brush 542 cleans foreign matter on the filter 40, centrifugal force generated when the cleaning brush 542 rotates may cause some of the foreign matter to scatter onto the inner wall of the cleaning cavity 56. Making the diameter of the second opening 564 smaller from top to bottom along the height direction of the housing 10 is advantageous in allowing dust to flow into the dust collection box 55 and preventing dust from accumulating due to dead ends on the side walls of the cleaning cavity 56.

[0152] 23 , the cleaning cavity 56 further includes a first extension section 561 and a second extension section 562. The first extension section 561 and the second extension section 562 are provided in a lower portion of the cleaning cavity 56. The first extension section 561 is connected to the front wall of the cleaning cavity 56, and the second extension section 562 is connected to the rear wall of the cleaning cavity 56, and a second opening 564 is defined between the first extension section 561 and the second extension section 564. The distance between the first extension section 561 and the second extension section 562 decreases from top to bottom along the height direction of the housing 10.

[0153] For example, one end of the first extending section 561 is connected to the bottom of the front wall of the cleaning cavity 56 and is located below the cleaning brush 542. The other end of the first extending section 561 extends obliquely toward the dust collection box 55. One end of the second extending section 562 is connected to the bottom of the rear wall of the cleaning cavity 56 and is located below the cleaning brush 542. The other end of the second extending section 562 extends obliquely toward the dust collection box 55.

[0154] The first extension section 561 and the second extension section 562 extend obliquely toward each other. That is, the other ends of the first extension section 561 and the second extension section 562 simultaneously extend obliquely toward the center of the dust collection box 55, and the first extension section 561 and the second extension section 562 are configured as a funnel-shaped second opening 564.

[0155] In addition, the other ends of the first extension section 561 and the second extension section 562 are flush with the bottom of the cleaning cavity 56, thereby preventing the first extension section 561 and the second extension section 562 from interfering with the installation of the dust collection box 55.

[0156] In this way, the distance between the first extension section 561 and the second extension section 562 decreases from top to bottom along the height direction of the housing 10, which is advantageous for foreign matter brushed off by the cleaning brush 542 to fall into the dust collection box 55, reducing the possibility of the foreign matter accumulating in the cleaning cavity 56 or the second opening 564 and reducing the risk of the foreign matter falling in areas other than the dust collection box 55. Furthermore, the entire first extension section 561 and the second extension section 562 are located below the cleaning brush 542, which is advantageous for guiding the foreign matter cleaned from the filter 40 to fall into the dust collection box 55 and preventing the foreign matter from accumulating in the cleaning cavity 56.

[0157] 23 and 25 , the self-cleaning assembly 50 further includes an insert 58. The insert 58 is provided on a connecting plate 516 and may move along the length of the housing 10 relative to the connecting plate 516. When the self-cleaning assembly 50 is attached to the housing 10, the insert 58 moves along the length of the housing 10 until a portion of the insert 58 extends beyond the end of the base 51 and engages with the housing 10, thereby achieving attachment of the self-cleaning assembly 50. When it is necessary to remove the self-cleaning assembly 50, the insert 58 is moved such that the insert 58 moves along the length of the housing 10 toward the center of the base 51, thereby separating the insert 58 from the housing 10 and achieving removal of the self-cleaning assembly 50 from the housing 10.

[0158] Providing the insert 58 on the self-cleaning assembly 50 is advantageous for detaching and attaching the self-cleaning assembly 50, and improves the efficiency of detaching and attaching the self-cleaning assembly 50.

[0159] 28 to 31 , the cleaning brush assembly 54 further includes a cleaning brush reel 548. The cleaning brush 542 is mounted on the outer circumferential surface of the cleaning brush reel 548. The cleaning brush reel 548 is connected to the third gear 73. As a result, when the second drive motor 62 drives the third gear 73 to rotate, the third gear 73 rotates the cleaning brush reel 548. The cleaning brush reel 548 is configured to rotate the cleaning brush 542 when it rotates.

[0160] The cleaning brush assembly 54 further includes at least one position limiting portion 546. The at least one position limiting portion 546 is connected to the cleaning brush reel 548 and is installed at least at one end of the cleaning brush reel 548. A stopper portion 547 is provided on the inner wall of the cleaning cavity 56. The position limiting portion 546 is configured to limit the rotation angle of the cleaning brush assembly 54 by abutting against the stopper portion 547.

[0161] It is understood that when the air conditioner indoor unit 100A is in self-cleaning mode, the cleaning brush reel 548 can rotate a certain angle, causing the position limiting portion 546 to engage with the stopper portion 547, thereby allowing the cleaning brush 542 to engage with the filter 40 wound on the first reel 52 and clean foreign matter on the filter 40.

[0162] It is understood that the engagement between the limiting portion 546 and the stopper portion 547 limits the rotation angle of the cleaning brush reel 548, thereby improving the contact accuracy between the cleaning brush 542 and the filter 40 on the first reel 52, and preventing the cleaning brush 542 from shifting relative to the first reel 52 due to an insufficient or excessively large rotation angle of the cleaning brush reel 548, thereby preventing foreign matter on the filter 40 from being effectively cleaned.

[0163] Furthermore, when the cleaning brush 542 finishes cleaning the filter 40, the cleaning brush reel 548 can rotate in the opposite direction, so that the position limiting portion 546 engages with the stopper portion 547 again (i.e., the cleaning brush reel 548 is located at the initial position). This reduces the rotation error of the cleaning brush reel 548 and avoids the influence of inertia on the rotation of the cleaning brush reel 548 to the initial position, which is advantageous to improving the reliability of the self-cleaning assembly 50.

[0164] 32 and 33, the included angle between the first position limiting protrusion 5461 and the second position limiting protrusion 5462 is α, and α is any value between 0° and 180° (i.e., 0°<α≦180°). For example, α is any value between 120° and 180° (i.e., 120°≦α≦180°). If α is too large, for example exceeding 180°, when the first position limiting protrusion 5461 and the second position limiting protrusion 5462 rotate back and forth between the first position and the second position, the rotation range becomes too large, making it unstable for the first position limiting protrusion 5461 and the second position limiting protrusion 5462 to abut against the stopper portion 547, and increasing the rotation error of the cleaning brush assembly 54.

[0165] For example, the included angle α between the first position limiting protrusion 5461 and the second position limiting protrusion 5462 is 180°, i.e., the first position limiting protrusion 5461 and the second position limiting protrusion 5462 are spaced apart along the circumferential direction of the cleaning brush reel 548 and are parallel to each other, which is advantageous in improving the reliability with which the first position limiting protrusion 5461 and the second position limiting protrusion 5462 are engaged with the stopper 547.

[0166] 32 , the first stopper surface 5471 and the second stopper surface 5472 are distributed along the top and bottom of the base 51. The first stopper surface 5471 is located below the second stopper surface 5472. When the cleaning brush reel 548 rotates clockwise, the first position limiting protrusion 5461 rotates to the first stopper surface 5471 and engages with the first stopper surface 5471. When the position limiting portion 546 rotates from the first position to the second position, the first position limiting protrusion 5461 is released from engagement with the stopper portion 547, and then the second position limiting protrusion 5462 engages with the stopper portion 547, allowing the cleaning brush 542 to clean foreign matter on the filter 40.

[0167] It is understood that the above-described installation facilitates engagement between the first position limiting protrusion 5461 and the second position limiting protrusion 5462 and the stopper portion 547, and is advantageous in improving the stability and reliability of the engagement between the position limiting portion 546 and the stopper portion 547, thereby reducing the rotation error of the cleaning brush reel 548.

[0168] 29 to 31 , the self-cleaning assembly 50 further includes a cleaning component 59. The cleaning component 59 is provided on a side of the base front cover 513 that is closer to the cleaning cavity 56. For example, the cleaning component 59 and the base front cover 513 may be connected by adhesive or an engaging structure. The cleaning component 59 is provided on a side wall of the cleaning cavity 56 that faces the stopper portion 547. When the position limiting portion 546 rotates back and forth between the first position and the second position, the cleaning component 59 is configured to clean foreign matter on the cleaning brush 542.

[0169] For example, the stopper portion 547 is provided on the rear wall of the cleaning cavity 56, and the cleaning element 59 is provided on the front wall of the cleaning cavity 56. When there is a lot of foreign matter on the filter 40 and the filter 40 needs to be cleaned, the cleaning brush 542 comes into contact with the second reel 53 while the position limiting portion 546 is rotating from the first position to the second position, thereby cleaning the filter 40. While the position limiting portion 546 is rotating from the first position to the second position, the cleaning element 59 comes into contact with the cleaning brush 542, thereby cleaning the foreign matter on the cleaning brush 542 and keeping the cleaning brush 542 relatively clean.

[0170] In this way, when the second position limiting protrusion 5462 abuts against the stopper portion 547 again, the cleaning brush 542 cleaned by the cleaning part 59 can better clean foreign matter on the filter 40, thereby improving the cleaning effect of the cleaning brush assembly 54 on the filter 40.

[0171] For example, when the position limiting portion 546 rotates from the second position to the first position, the cleaning brush 542, after cleaning the filter 40, is cleaned by the cleaning part 59 and then rotates below the cleaning part 59. In this case, the first position limiting protrusion 5461 engages with the stopper portion 547 to stop the rotation of the cleaning brush 542, making it easier to clean the cleaning brush 542 again.

[0172] In some embodiments, the scrubbing brush 542 is removably connected to the scrubbing brush reel 548 and the cleaning element 59 is removably connected to the base 51 .

[0173] For example, the cleaning brush 542 is fitted into the cleaning brush reel 548. The position limiting portion 546 is connected to an end of the cleaning brush reel 548 along the axial direction of the cleaning brush reel 548. The position limiting portion 546 can be disengaged from the cleaning brush reel 548 by moving along the axial direction of the cleaning brush reel 548. The cleaning brush reel 548 may limit the rotation of the position limiting portion 546 along the circumferential direction of the cleaning brush reel 548.

[0174] In this way, when the cleaning brush reel 548 rotates, the position limiting portion 546 can rotate together with the cleaning brush reel 548, and the position limiting portion 546 can be disengaged from the cleaning brush reel 548 in the axial direction of the cleaning brush reel 548.

[0175] The cleaning components 59 are installed in the cleaning cavity 56 along the axial direction of the cleaning brush reel 548. As a result, the cleaning brush 542 is removably connected to the cleaning brush reel 548, and the cleaning components 59 are removably connected to the base 51, which facilitates installation of the air conditioner indoor unit 100A, simplifies the installation process and steps of the air conditioner indoor unit 100A, and improves installation efficiency of the air conditioner indoor unit 100A.

[0176] In some embodiments, the cross-sectional shape of the stopper portion 547 is an isosceles trapezoid, a right-angled trapezoid, a curved-sided trapezoid, or a semicircular shape, as shown in Figures 6 to 33. The stopper portion 547 is removably connected to the front wall of the cleaning cavity 56.

[0177] The shape of the stopper portion 547 can be selected according to actual design requirements, and the present disclosure is not limited to this. For example, if the position limiter 546 needs to be designed linearly to reduce the space it occupies, the cross-sectional shape of the stopper 547 may be an isosceles trapezoid or a right-angled trapezoid. If the position limiter 546 needs to be designed curvedly to avoid other components, the cross-sectional shape of the stopper 547 may be a curved trapezoid or a semicircle.

[0178] For example, the vertical cross section of the stopper portion 547 is a right-angled trapezoid, and the stopper portion 547 is a hollow member.

[0179] It is understood that stopper portions 547 of different shapes can be applied to different air conditioner indoor units 100A and can be fitted with and engaged with different position limiting portions 546, which is advantageous for increasing the contact area between the position limiting portion 546 and the stopper portion 547 and for improving the stability and reliability of the engagement between the position limiting portion 546 and the stopper portion 547.

[0180] In some embodiments, the at least one position limiting portion 546 includes a first position limiting portion and a second position limiting portion. The first position limiting portion and the second position limiting portion are provided at both ends of the cleaning brush reel 548 along the axial direction of the cleaning brush reel 548. The first position limiting portion and the second position limiting portion substantially overlap along the axial direction of the cleaning brush reel 548.

[0181] Either the first position limiting portion or the second position limiting portion includes a first position limiting protrusion 5461 and a second position limiting protrusion 5462. Along the axial direction of the cleaning brush reel 548, the first position limiting protrusion 5461 of the first position limiting portion substantially overlaps with the first position limiting protrusion 5461 of the second position limiting portion, and the second position limiting protrusion 5462 of the first position limiting portion substantially overlaps with the second position limiting protrusion 5462 of the second position limiting portion.

[0182] Correspondingly, the cleaning brush assembly 54 includes two stopper portions 547. The two stopper portions 547 correspond to the first and second position limiting portions, respectively, and are provided on the inner wall of the cleaning cavity 56.

[0183] This is advantageous in improving the stability of the position restriction of the cleaning brush reel 548 by engaging the two position restriction portions 546 with the two stopper portions 547, and in improving the cleaning effect of the cleaning brush 542 on the filter 40.

[0184] 34, 36, and 38, the self-cleaning assembly 50 further includes a cleaning brush assembly 54, which includes a cleaning brush reel 548 and a cleaning brush 542 mounted on the cleaning brush reel 548. The cleaning brush reels 548 are each rotatably connected to the base 51. The first reel 52, the second reel 53, and the cleaning brush assembly 54 are each communicatively connected to a controller.

[0185] The controller is configured to control the rotation or stopping of rotation of the first reel 52, the second reel 53 and the cleaning brush reel 548, thereby causing the air conditioner indoor unit 100A to execute the self-cleaning mode.

[0186] In some embodiments, the controller is further configured to control the rotation of the cleaning brush reel 548 when the air conditioner indoor unit 100A enters the self-cleaning mode, causing the cleaning brush 542 to rotate on the first reel 52 and contact the filter 40.

[0187] The controller is further configured to control the rotation of the first reel 52 when the cleaning brush 542 rotates on the first reel 52, move the filter 40, and cause the cleaning brush 542 to clean foreign matter on the filter 40.

[0188] In some embodiments, the controller is further configured to control the rotation of the cleaning brush reel 548 after the cleaning brush 542 has cleaned the filter 40, rotate the cleaning brush 542 to the cleaning element 59, and cause the cleaning element 59 to remove foreign matter on the cleaning brush 542.

[0189] It will be understood that when the air conditioner indoor unit 100A enters the self-cleaning mode, the controller first controls the rotation of the cleaning brush reel 548 to rotate the cleaning brush 542 to a position where it contacts the filter 40, and then the controller controls the rotation of the first reel 52 to move the filter 40 relative to the cleaning brush 542. As the filter 40 moves, the cleaning brush 542 can clean dust and foreign matter on the filter 40, which is advantageous for improving the filtering ability of the filter 40.

[0190] After the filter 40 is cleaned, the controller also controls the rotation of the cleaning brush reel 548 to rotate the cleaning brush 542 toward the cleaning element 59, causing relative motion between the cleaning brush 542 and the cleaning element 59, so that the cleaning element 59 can clean foreign matter adhering to the cleaning brush 542.

[0191] The above-described arrangement is advantageous for simplifying the structure of the self-cleaning assembly 50 and for facilitating cleaning of the filter 40. Furthermore, by using the above-described control logic to control the operation of the first reel 52 and the cleaning brush reel 548, the cleaning operation of the cleaning brush 542 on the filter 40 and the cleaning operation of the cleaning element 59 on the cleaning brush 542 can be separated, preventing mutual interference between the two operations. The simplified control logic improves the reliability of the self-cleaning operation performed by the self-cleaning assembly 50 and improves the cleaning ability of the self-cleaning assembly 50 on the filter 40.

[0192] It is understood that while the air conditioner indoor unit 100A is performing the self-cleaning mode, the cleaning component 59 can effectively remove foreign matter adhering to the cleaning brush 542, thereby improving the cleaning level of the cleaning brush 542 before the next cleaning operation and improving the cleaning ability of the cleaning brush 542.

[0193] In some embodiments, the controller is further configured to control the rotation of the cleaning brush reel 548 so as to prevent the cleaning brush 542 from contacting either the filter 40 or the cleaning element 59 before the cleaning brush 542 cleans the filter 40.

[0194] 38 and 39, when the cleaning brush 542 is not operating, i.e., after the cleaning brush 542 has been cleaned by the cleaning element 59 and before cleaning the filter 40, the controller may control the rotation of the cleaning brush reel 548 so that the cleaning brush 542 does not come into contact with either the filter 40 or the cleaning element 59. For example, the cleaning brush 542 may be positioned between the cleaning element 59 and the first reel 52. This arrangement, on the one hand, effectively prevents foreign matter on the cleaning brush 542 from being attracted to the filter 40, thereby improving the cleaning ability of the filter 40. On the other hand, when the cleaning brush 542 cleans the filter 40, the cleaning brush 542 can rotate relative to the first reel 52 in a relatively short path, which is advantageous in improving the response speed of the self-cleaning assembly 50.

[0195] In some embodiments, as shown in Figures 34, 36 and 38, when the cleaning brush reel 548 rotates, the cleaning brush 542 can be rotated to a first set position 5421, a second set position 5422 and a third set position 5423.

[0196] 34 and 35, when the cleaning brush 542 is positioned at the first setting position 5421, the cleaning brush 542 does not contact either the filter 40 or the cleaning element 59, and the cleaning brush 542 is positioned below the filter 40.

[0197] 36 and 37, when the cleaning brush 542 is located at the second setting position 5422, the cleaning brush 542 comes into contact with the filter 40 to clean the dust and foreign matter on the filter 40.

[0198] Referring to Figures 38 and 39, when the cleaning brush 542 is positioned in the third setting position 5423, the cleaning brush 542 is separated from the filter 40, and at least a portion of the cleaning brush 542 contacts the cleaning element 59, so that the cleaning element 59 can clean dust and foreign matter.

[0199] In some embodiments, the second set position 5422, the third set position 5423, and the first set position 5421 are arranged in sequence along a clockwise direction.

[0200] For example, when the cleaning brush 542 is located at the first set position 5421, the cleaning brush 542 is located below the cleaning element 59, and the cleaning brush 542 does not come into contact with either the filter 40 or the cleaning element 59, thereby effectively preventing foreign matter on the cleaning brush 542 from being adsorbed onto the filter 40.

[0201] When the cleaning brush 542 is located at the second setting position 5422, the cleaning brush 542 is located above the cleaning brush reel 548 and corresponds to the position of the first reel 52. In this way, when the cleaning brush 542 rotates to the first setting position 5421, the cleaning brush 542 can be in sufficient contact with the filter 40, which is advantageous in improving the cleaning effect of the cleaning brush 542 on the filter 40.

[0202] When the cleaning brush 542 is located in the third setting position 5423, the cleaning brush 542 is located on the side of the cleaning brush reel 548 closer to the cleaning element 59, and by contacting the cleaning element 59, the cleaning element 59 can clean the dust and foreign matter on the cleaning brush 542.

[0203] It will be appreciated that by providing the first set position 5421, the second set position 5422 and the third set position 5423 of the cleaning brush 542, the cleaning brush 542 is positioned at different positions when in different operating states, thereby improving the precision of control over the cleaning brush 542 and thereby improving the reliability of operation of the self-cleaning assembly 50.

[0204] In some embodiments, cleaning element 59 may be located behind cleaning brush reel 548, although the present disclosure is not limited thereto.

[0205] In some embodiments, the controller is further configured to: control the cleaning brush 542 to be positioned at the first set position 5421 before the cleaning brush 542 cleans the filter 40; control the cleaning brush 542 to rotate clockwise from the first set position 5421 to the second set position 5422 when the cleaning brush 542 cleans the filter 40; and control the cleaning brush 542 to remain stationary at the second set position 5422 for a set time so that the cleaning brush 542 cleans foreign matter on the filter 40; and control the cleaning brush 542 to rotate from the second set position 5422 to the first set position 5421 via the third set position 5423 after the cleaning brush 542 cleans the filter 40 so that the cleaning component 59 cleans foreign matter on the cleaning brush 542.

[0206] It is understood that when the cleaning brush 542 rotates through the third setting position 5423 to the first setting position 5421, the cleaning element 59 can effectively remove dust or foreign matter on the cleaning brush 542, which is advantageous for improving the cleaning degree of the cleaning brush 542 and improving the self-cleaning effect of the self-cleaning assembly 50.

[0207] In some embodiments, the controller is further configured to control the first reel 52 to rotate in the first direction, thereby winding the filter 40 onto the first reel 52. During the process of winding the filter 40 onto the first reel 52, the cleaning brush 542 is positioned at the second set position 5422, and can clean foreign matter on the filter 40.

[0208] For example, when the first reel 52 rotates along the first direction, the second reel 53 rotates along the second direction, causing the filter 40 wound on the second reel 53 to be released from the second reel 53. When the first reel 52 rotates along the second direction, the filter 40 can be released from the first reel 52, and at the same time, the second reel 53 rotates along the first direction, causing the filter 40 to be wound onto the second reel 53.

[0209] As a result, when the filter 40 is wound onto the first reel 52 or released from the first reel 52, the filter 40 can move back and forth relative to the cleaning brush 542, so that dust or foreign matter on the filter 40 is removed by the cleaning brush 542, thereby improving the filtering ability of the filter 40, ensuring normal operation of the indoor heat exchanger, and ultimately improving the cooling or heating effect of the air conditioner indoor unit 100A.

[0210] For example, the first direction is a clockwise direction and the second direction is a counterclockwise direction.

[0211] In some embodiments, the controller is further configured to control the first reel 52 to stop rotating after the cleaning brush 542 has cleaned the filter 40, and to control the cleaning brush 542 to move from the second set position 5422 via the third set position 5423 to the first set position 5421, thereby removing foreign matter on the cleaning brush 542.

[0212] It is understood that during the process in which the cleaning brush 542 moves from the second set position 5422 through the third set position 5423 to the first set position 5421, the filter 40 is stationary and the rotation of the cleaning brush reel 548 and the first reel 52 is independent of each other, thereby improving the control accuracy of the controller.

[0213] In some embodiments, the controller is further configured to control the first reel 52 to rotate along a second direction after the cleaning brush 542 has moved to the first set position 5421 (i.e., after the cleaning part 59 has cleaned the cleaning brush 542), thereby releasing the filter 40 from the first reel 52 and winding it onto the second reel 53, and moving the cleaned filter 40 to between the air inlet 11 and the indoor heat exchanger.

[0214] In some embodiments, the controller is further configured to control the first reel 52 to rotate along the second direction during the process of the cleaning brush 542 moving from the second set position 5422 through the third set position 5423 to the first set position 5421, thereby releasing the filter 40 from the first reel 52 and winding it onto the second reel 53, and moving the cleaned filter 40 to between the air inlet 11 and the indoor heat exchanger.

[0215] In this way, cleaning of the cleaning brush 542 and movement of the filter 40 can be performed simultaneously, thereby shortening the cleaning time of the self-cleaning assembly 50 and improving the cleaning efficiency of the self-cleaning assembly 50 .

[0216] In some embodiments, the controller is further configured to control the cleaning brush 542 to reciprocate between the third set position 5423 and the first set position 5421 after the cleaning brush 542 has cleaned the filter 40, thereby causing the cleaning component 59 to remove foreign matter on the cleaning brush 542.

[0217] For example, as shown in Figures 34, 36 and 38, the controller may control the cleaning brush reel 548 to rotate along the first direction or the second direction. In this way, after the cleaning brush 542 cleans the filter 40, the controller can control the reciprocating movement of the cleaning brush 542 between the third set position 5423 and the first set position 5421 by controlling the rotation direction of the cleaning brush reel 548, so that the cleaning brush 542 repeatedly moves with the cleaning element 59. contact This is advantageous in improving the cleaning effect of the cleaning brush 542 by the cleaning part 59.

[0218] In some embodiments, when the cleaning brush 542 moves from the second set position 5422 to the first set position 5421 along the first direction or moves from the first set position 5421 to the third set position along the second direction, the rotational speed of the cleaning brush 542 is a first rotational speed Ra. When the cleaning brush 542 rotates from the first set position 5421 to the second set position 5422, the rotational speed of the cleaning brush 542 is a second rotational speed Rb. Ra is smaller than Rb.

[0219] By setting Ra to be smaller than Rb, the cleaning brush 542 is rotated at a relatively slow rotational speed (i.e., Ra) when the cleaning part 59 is cleaning the cleaning brush 542, and before the cleaning brush 542 cleans the filter 40, the cleaning brush 542 is rotated at a relatively fast rotational speed (i.e., Rb) to the second set position 5422, thereby effectively preventing foreign matter falling from the cleaning brush 542 from falling into the cleaning cavity 56 when the cleaning part 59 is cleaning the cleaning brush 542, and improving the cleanliness of the cleaning cavity 56.

[0220] It should be noted that the first rotation speed Ra and the second rotation speed Rb can be set according to actual usage requirements, and the present disclosure is not limited thereto.

[0221] In some embodiments, the self-cleaning assembly 50 further includes a dust suction member. The dust suction member is provided on a side wall of the base 51 and is adjacent to the first reel 52. The dust suction member is configured to collect dust and foreign matter falling from the cleaning brush 542 when the cleaning member 59 cleans the cleaning brush 542, thereby preventing the dust falling from the cleaning brush 542 from leaking outside the cleaning cavity 56 and improving the cleanliness of the inside of the housing 10. For example, the dust suction member includes a sponge member.

[0222] In some embodiments, as shown in FIGS. 34, 36, and 38, the central axis of the cleaning brush reel 548 is located directly below the central axis of the first reel 52. As a result, when the cleaning brush 542 is located in the second setting position 5422, the filter 40 wound on the first reel 52 contacts the outer periphery of the cleaning brush 542. As a result, the cleaning brush 542 does not interfere with the rotation of the first reel 52 while the cleaning brush 542 is rotating, and the cleaning brush 542 effectively removes foreign matter and dust from the filter 40, thereby improving the cleaning effect and cleaning efficiency of the cleaning brush 542. In addition, arranging the first reel 52 and the cleaning brush 542 one above the other allows the dimension of the housing 10 in the front-to-rear direction (e.g., the front-to-rear direction shown in FIG. 34) to be reduced, which is advantageous for designing a thinner and lighter housing 10.

[0223] Those skilled in the art will appreciate that the scope of the present disclosure is not limited to the particular embodiments described above, and that modifications and substitutions can be made to specific elements of the embodiments without departing from the spirit of the present application. The scope of the present disclosure is limited by the claims.

Claims

1. An air conditioner indoor unit, a housing having an inlet and an outlet; At least one filter covering the air inlet and configured to filter foreign matter in the indoor air; at least one self-cleaning assembly corresponding to the at least one filter and configured to remove foreign matter on the at least one filter; The self-cleaning assembly includes: a base having a cleaning cavity defined therein, the cleaning cavity having an open top and a first opening, and an open bottom and a second opening; a first reel rotatably connected to the base and positioned in the first opening, the first reel connected to one end of the filter; a second reel rotatably connected to the base and positioned above the first opening, the second reel connected to the other end of the filter; a cleaning brush assembly mounted in the cleaning cavity, the cleaning brush assembly including: a cleaning brush reel rotatably connected to the base; and a cleaning brush mounted on the cleaning brush reel and configured to clean foreign matter on the filter when the filter is being wound onto or released from the first reel; a dust collection box disposed at the second opening and configured to collect foreign matter cleaned from the filter by the cleaning brush assembly; The self-cleaning assembly includes: at least one position limiting portion connected to at least one end of the cleaning brush reel; and at least one stopper portion provided on an inner wall of the base and corresponding to the at least one position limiting portion, the at least one stopper portion being configured to engage with the stopper portion and limit a rotation angle of the cleaning brush, Any one of the at least one position limiting unit is A first position limiting protrusion; a second position limiting protrusion, the first position limiting protrusion and the second position limiting protrusion being spaced apart along the circumferential direction of the cleaning brush reel, and the second position limiting protrusion extending along the radial direction of the cleaning brush reel; The position limiting unit is When the first position limiting protrusion moves to the first position, the first position limiting protrusion is engaged with the stopper portion, When the second position limiting protrusion moves to the second position, the second position limiting protrusion is engaged with the stopper portion. Air conditioner indoor unit.

2. The angle between the first position limiting protrusion and the second position limiting protrusion is any value between 0° and 180°. The air conditioner indoor unit according to claim 1.

3. any one of the at least one stopper portion includes a first stopper surface and a second stopper surface, When the position limiting portion moves to the first position, the first position limiting protrusion engages with the first stopper surface, and when the position limiting portion moves to the second position, the second position limiting protrusion engages with the second stopper surface. The air conditioner indoor unit according to claim 1 or 2.

4. When the position limiting portion moves to the first position, the cleaning brush is separated from the filter; When the position limiting portion moves to the first position, the cleaning brush is positioned on a side of the cleaning brush reel closer to the first reel, thereby cleaning foreign matter on the filter wound on the first reel. The air conditioner indoor unit according to claim 1 or 2.

5. The self-cleaning assembly further includes a cleaning element, the cleaning element being mounted on an inner wall of the base and adjacent to the cleaning brush reel; the cleaning component is configured to clean foreign matter on the cleaning brush when the position limiting portion moves between the first position and the second position. The air conditioner indoor unit according to claim 4.

6. The self-cleaning assembly includes: the cleaning brush is removably connected to the cleaning brush reel; the cleaning element is removably connected to the base; The air conditioner indoor unit according to claim 5.

7. the at least one position limiting portion includes two position limiting portions, the two position limiting portions being provided at both ends of the cleaning brush reel along the axial direction of the cleaning brush reel, respectively; The air conditioner indoor unit according to claim 1 or 2.

8. the two position limiting portions substantially overlap each other along the axial direction of the cleaning brush reel; The air conditioner indoor unit according to claim 7.

9. The self-cleaning assembly includes: a cleaning component provided on an inner wall of the base and configured to clean foreign matter on the cleaning brush; The air conditioner indoor unit further includes a controller communicatively connected to each of the first reel, the second reel, and the cleaning brush reel. The air conditioner indoor unit according to claim 1.

10. the controller is further configured to control rotation of the cleaning brush reel before the air conditioner indoor unit operates in the self-cleaning mode, thereby separating the cleaning brush from the filter and the cleaning component, respectively. The air conditioner indoor unit according to claim 9.

11. the cleaning brush reel is further configured to rotate the cleaning brush to a first set position, a second set position, and a third set position; When the cleaning brush is located at the first setting position, the cleaning brush is separated from the filter and the cleaning element, respectively; When the cleaning brush is located at the second setting position, the cleaning brush comes into contact with the filter wound on the first reel to clean the filter; When the cleaning brush is located at the third setting position, the cleaning brush is separated from the filter, and at least a portion of the cleaning brush contacts the cleaning element. The air conditioner indoor unit according to claim 10.

12. The controller Before the air conditioner indoor unit operates in a self-cleaning mode, the rotation of the cleaning brush reel is controlled to position the cleaning brush at the first set position; When the air conditioner indoor unit is operating in a self-cleaning mode, the rotation of the cleaning brush reel is controlled to rotate the cleaning brush from the first set position to the second set position; After the cleaning brush has cleaned the filter, the cleaning brush is rotated from the second set position, through the third set position, to the first set position by controlling rotation of the cleaning brush reel; The cleaning component is further configured to clean foreign matter on the cleaning brush while the cleaning brush rotates from the second set position, via the third set position, to the first set position. The air conditioner indoor unit according to claim 11.

13. The controller further configured to control the first reel to rotate along a first direction, thereby winding the filter onto the first reel; The air conditioner indoor unit according to claim 12, wherein the cleaning brush is positioned at the second set position and configured to clean foreign matter on the filter while the filter is being wound onto the first reel.

14. The controller After the cleaning brush has cleaned the filter, the first reel is controlled to stop rotating, and the cleaning brush is controlled to move from the second set position to the first set position, thereby causing the cleaning component to clean the foreign matter on the cleaning brush; and controlling the first reel to rotate in a second direction after the cleaning component has cleaned the cleaning brush, thereby releasing the filter from the first reel and moving the filter to the suction port. The air conditioner indoor unit according to claim 13.

15. The controller After the cleaning brush has cleaned the filter, the first reel is controlled to rotate in a second direction, thereby releasing the filter from the first reel and moving it to the suction port; and controlling the rotation of the cleaning brush reel after the first reel stops rotating in the second direction to move the cleaning brush from the second set position to the first set position, thereby causing the cleaning component to clean foreign matter on the cleaning brush. The air conditioner indoor unit according to claim 13.

16. The controller The cleaning brush may be controlled to move from the second set position to the first set position, thereby causing the cleaning component to clean foreign matter on the cleaning brush; In a process in which the cleaning component cleans foreign matter on the cleaning brush, the controller is further configured to control the first reel to rotate along a second direction, thereby releasing the filter from the first reel and moving it to the suction port. The air conditioner indoor unit according to claim 13.

17. the controller is further configured to, after the cleaning brush has cleaned the filter, control rotation of the cleaning brush reel to reciprocate the cleaning brush between the third set position and the first set position; The cleaning component is configured to clean foreign matter on the cleaning brush while the cleaning brush reciprocates between the third set position and the first set position. The air conditioner indoor unit according to any one of claims 12 to 16.

18. a rotation speed of the cleaning brush is a first rotation speed during a process in which the cleaning brush moves from the second set position to the first set position along the first direction or during a process in which the cleaning brush moves from the first set position to the third set position along the second direction; When the cleaning brush rotates from the first set position to the second set position, the rotation speed of the cleaning brush is a second rotation speed; the first rotational speed is less than the second rotational speed; The air conditioner indoor unit according to any one of claims 14 to 16.

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