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 having application number PCT / CN2023 / 096723, filed on May 29, 2023, the PCT international patent application having application number PCT / CN2023 / 105581, filed on July 3, 2023, the Chinese patent application having application number 202310269552.1, filed on March 17, 2023, and the Chinese patent application having application number 202320297894.X, filed on February 21, 2023, the entire disclosures of which are incorporated herein by reference. 、 The Chinese patent application having application number 202223608409.0 filed on December 30, 2022, claims priority based on the Chinese patent application having application number 202223602180.X filed on December 30, 2022, and the PCT international patent application having application number PCT / CN2023 / 105581, claims priority based on the Chinese patent application having 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 part of home life. 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 filters the air entering the air conditioner indoor unit with a filter, prevents foreign matter in the air such as dust 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 inlet and an outlet. The at least one filter is configured to cover the inlet and 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 inside the base. A top of the cleaning cavity is open to form a first opening, and a bottom of the cleaning cavity is open to form 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 wound on the first reel 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 stopper portion. The at least one position limiting portion is connected to at least one end of the cleaning brush reel. The at least one stopper 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 limit a rotation angle of the cleaning brush by engaging with the stopper portion.

[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 inlet and an outlet. The filter covers the inlet and is configured to filter foreign matter in indoor air. The self-cleaning assembly is configured to remove foreign matter on the filter. The self-cleaning assembly includes a base, a first reel, a second reel, a cleaning brush assembly, a cleaning part, and a dust collection box. A cleaning cavity is defined in 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. A 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 wound onto the first reel or released from the first reel. The cleaning part is installed on an inner wall of the base and configured to clean foreign matter on the cleaning brush. The dust collection box is installed at a bottom of the cleaning cavity and configured to collect foreign matter falling from the cleaning brush and the cleaning part. 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, when the air conditioner indoor unit operates in a self-cleaning mode, to control rotation of the cleaning brush reel to rotate the cleaning brush to the first reel and bring it into contact with the filter wound around the first reel, to control 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, to control rotation of the cleaning brush assembly to rotate the cleaning brush to the cleaning part and cause the cleaning part to clean the foreign matter on the cleaning brush. [Brief description of the drawings]

[0007] [Figure 1] 1 is a perspective view of an air conditioner indoor unit according to some embodiments. [Diagram 2] FIG. 1 is a perspective view of a housing of an air conditioner indoor unit according to some embodiments. [Diagram 3] FIG. 3 is a partially enlarged view of circle A in FIG. [Figure 4] FIG. 1 is a front view of an air conditioner indoor unit according to some embodiments. [Diagram 5] 5 is a cross-sectional view taken along the line BB in FIG. 4. [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] FIG. 2 is a perspective view of a first reel and a second reel of an air conditioner indoor unit according to some embodiments. [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 a second portion of the first reel or a 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 partially enlarged view of the circle C in FIG. [Figure 12] FIG. 11 is a perspective view of another base of an air conditioner indoor unit according to some embodiments. [Figure 13] 2 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 partially enlarged view of 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 circle E in FIG. [Figure 17] 1 is a structural diagram of a filter of 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. 11 is a perspective view of another air conditioner indoor unit according to some embodiments. [Figure 20] FIG. 13 is an exploded view of a housing and self-cleaning assembly of another air conditioner indoor unit according to some embodiments. [Figure 21] FIG. 13 is an exploded view of another air conditioner indoor unit self-cleaning assembly according to some embodiments. [Figure 22] 22 is a partially enlarged view of circle P in FIG. 21. FIG. [Figure 23] FIG. 13 is a cross-sectional view of another air conditioner indoor unit self-cleaning assembly according to some embodiments. [Figure 24] FIG. 11 is an exploded view of a cleaning brush assembly for another air conditioner indoor unit according to some embodiments. [Diagram 25] FIG. 13 is an exploded view of another air conditioner indoor unit self-cleaning assembly according to some embodiments. [Figure 26] FIG. 13 is an exploded view of a drive assembly of another air conditioner indoor unit according to some embodiments. [Figure 27] FIG. 11 is a perspective view of a stopper portion of another air conditioner indoor unit according to some embodiments. [Figure 28] FIG. 13 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. [Diagram 30] 11 is a cross-sectional view of another air conditioner indoor unit according to some embodiments when a position limiting portion is located in a second position. FIG. [Diagram 31]13 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. [Diagram 32] FIG. 11 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. [Diagram 33] FIG. 11 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. [Diagram 34] FIG. 11 is a structural diagram of a self-cleaning assembly (with the cleaning brush in a first set position) and a filter of another air conditioner indoor unit according to some embodiments. [Diagram 35] FIG. 35 is a partially enlarged view of a circle K in FIG. 34. [Diagram 36] FIG. 11 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 partially enlarged view of circle L in FIG. 36. [Figure 38] FIG. 11 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 circle M in FIG. 38. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, some embodiments of the present disclosure will be described clearly and completely 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. Based on the embodiments in the present disclosure, all other embodiments that can be conceived by a person skilled in the art shall 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 the orientations or positional relationships indicated by terms such as "center," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, based on the orientations or positional relationships shown in the drawings, are for convenience or simplification of the description of this application, and do not indicate or imply that the devices or elements referred to have a particular orientation or are required to be constructed or operated in a particular orientation, and should not be understood as limiting this application.

[0011] Hereinafter, for convenience of explanation, the expressions of up, down, left, right, front, and rear in this disclosure are based on the state when the air conditioner indoor unit is in operation, unless otherwise specified. When the air conditioner indoor unit is in operation, the side facing the user is the front side, and the opposite side is the rear side. 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-rear direction.

[0012] With the spread of air conditioners, the demands of users 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 in the air from entering the air conditioner indoor unit. After the air conditioner indoor unit has been operating for a certain period of time, there may be too much foreign matter such as dust adhering to the filter, which may clog part of the filter, reduce the amount of air intake, and reduce the cooling efficiency or heating efficiency of the air conditioner.

[0013] Typically, a roller brush is installed in an indoor unit of an air conditioner, and foreign matter adhering to the filter is removed by the roller brush, so that the filter maintains a high filtering ability and maintains the cooling or heating efficiency of the indoor unit of the air conditioner. When the indoor unit of the air conditioner is operated for a certain period of time, foreign matter adhering to the filter increases, and there is a need to remove the filter assembly and clean the filter, roller brush, and other structures in the filter assembly. In the process of removing the filter assembly, a drive motor for driving the filter to move relative to the roller brush is connected to the filter, so that the drive motor must be removed before removing the filter assembly. However, when removing the filter assembly, there is a possibility of a safety hazard, such as electric shock due to contact with the drive motor. Furthermore, since the filter assembly is not easily attached or detached, the assembly efficiency of the indoor unit of the air conditioner is low, and it is disadvantageous for users to clean the filter assembly.

[0014] In some embodiments of the present disclosure, an air conditioner indoor unit 1000 is provided. 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 a 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 a 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 a direction perpendicular to the front panel 191 and the back panel 192, respectively. For example, the first side panel 193 is a side panel on one side in the length direction of the housing 100 (i.e., the left-right direction shown in FIG. 1), and the second side panel 194 is a side panel on the other side in the length direction of the housing 100 (i.e., the left-right direction shown in FIG. 1). For example, the first side plate 193 is a left side plate of the air conditioner indoor unit 1000, and the second side plate 194 is a right side plate of the air conditioner indoor unit 1000.

[0016] The housing 100 has an inlet 110. For example, a part of the top of the housing 100 is opened to form the inlet 110. The filter assembly 200 is installed in the housing 100 and is located at the inlet 110. The filter assembly 200 is configured to filter air entering the air conditioner indoor unit 1000 from the inlet 110 and prevent foreign matter in the air from entering the air conditioner indoor unit 1000. The self-cleaning assembly 300 is installed in the housing 100 and configured to remove foreign matter attached 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, cause the self-cleaning assembly 300 to remove foreign matter attached to the filter assembly 200, perform a self-cleaning operation, and maintain the cooling efficiency 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 in 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 foreign matter in the air entering the air conditioner indoor unit 1000 from 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 provided in 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 close to the back plate 192, and extends along the thickness direction of the air conditioner indoor unit 1000 (the front-rear direction shown in FIG. 7A). A mounting cavity 313 is defined in 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 installed on the bracket 312, and can move relative to the bracket 312.

[0022] The first cleaning brush 320, the first reel 330, and the second reel 340 are rotatably installed in the mounting cavity 313, and the first cleaning brush 320, the first reel 330, and the second reel 340 each extend along the length direction 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 attached to the filter 210. The first cleaning brush 320 is installed close to the first reel 330. The first reel 330 and the second reel 340 are installed with a gap therebetween 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, the transmission assembly 500 is mounted on the base 310, and the transmission assembly 500 is connected to the first reel 330 and the second reel 340, respectively. The transmission assembly 500 is connected to the filter 210 via the first reel 330 and the second reel 340.

[0024] The driving assembly 400 is installed on the housing 100, and includes a driving gear 410. The driving gear 410 is connected to a power output end. The power output end of the driving assembly 400 is detachably connected to a transmission assembly 500. For example, the driving assembly 400 is a driving motor. The driving assembly 400 may drive the filter 210 to move along a preset track by rotating the first reel 330 and the second reel 340 in opposite directions via the transmission assembly 500. That is, a relative movement occurs between the first cleaning brush 320 and the filter 210, so that different areas of the filter 210 are placed opposite to 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, such that the filter 210 is stretched between the first reel 330 and the second reel 340 and moves relative to the first cleaning brush 320. In this manner, the first cleaning brush 320 can clean the area of ​​the filter 210 opposite 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] In the process of operating the self-cleaning assembly 300, the drive assembly 400 operates the drive gear 410 on the power output end to rotate along a first direction, thereby rotating the first driven gear 510 along a second direction, and thus rotating the first reel 330 along the second direction. At the same time, the first driven gear 510 further rotates the second driven gear 520 along the first direction, thereby rotating the second reel 340 along the first direction.

[0028] In this manner, 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 preset trajectory, whereby different areas on the filter 210 face the first cleaning brush 320 in turn, and the first cleaning brush 320 cleans the 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 driving of the drive gear 410, causing the first reel 330 to rotate in a counterclockwise direction and winding 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 winding down the filter 210.

[0031] It is understood that the first driven gear 510 rotates along a clockwise direction under the driving of the drive gear 410, causing the first reel 330 to rotate along a clockwise direction and wind up the filter 210, and then the first driven gear 510 rotates along a clockwise direction and at the same time causes the second driven gear 520 to rotate along a counterclockwise direction, thereby causing the second reel 340 to rotate along 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 along the first direction, so that the intermediate gear 540 rotates the third driven gear 530 along the second direction, and thus rotates the first cleaning brush 320 along the second direction. Thus, 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] In some embodiments, as shown in Figures 10, 11 and 12, the base 310 further includes an accommodation 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 accommodation cavity 314. The transmission assembly 500 is installed in the accommodation cavity 314, that is, 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 accommodation cavity 314. Providing the accommodation 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, is advantageous for routing wiring within the air conditioner indoor unit 1000, and prevents a working component (e.g., the intermediate gear 540) from damaging other components (e.g., the fan assembly 700).

[0035] In some embodiments, as shown in Fig. 12, a first opening 3141, a second opening 3142, and a third opening 3143 communicating with the mounting cavity 313 are provided on the bottom side of the receiving cavity 314. 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 on 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 the 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 the 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 manner, 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 a first portion 331 and a second portion 332, and first portion 331 and second portion 332 are removably connected. Second reel 340 includes a third portion 341 and a fourth portion 342, and third portion 341 and fourth portion 342 are removably connected. 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 along the thickness direction of the air conditioner indoor unit 1000 (the front-to-rear direction shown in FIGS. 8A and 8B ), and each 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 on 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 and connected to each other, 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 and connected to each other, thereby detachably connecting the third portion 341 and the fourth portion 342. In this way, the connection between the first portion 331 and the second portion 332 and the connection between the third portion 341 and the fourth portion 342 are realized by the locking connection, which is advantageous for the user to remove the filter 210 and wash it.

[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 of the self-cleaning assemblies 300, and each air inlet 110 corresponds to one of the filtration assemblies 200.

[0045] It will be understood that installing multiple intake ports 110, multiple filtering assemblies 200 and multiple self-cleaning assemblies 300 in the air conditioner indoor unit 1000 is advantageous in increasing the intake air volume and exhaust 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 driving assemblies 400 and a plurality of transmission assemblies 500, and each driving assembly 400 corresponds to one transmission assembly 500. Each driving assembly 400 is connected to a filter assembly 200 via its corresponding transmission assembly 500. In this manner, 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 FIG. 12, the base 310 further comprises a cutout 315. For example, the back plate of the receiving cavity 314 may be 192 The side closer to the first driven gear 510 is opened, 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 is understood that the detachable connection between the transmission assembly 500 and the drive assembly 400 is realized by the meshing between the first driven gear 510 and the drive gear 410. Providing the notch 315 on the base 310 is advantageous for realizing 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, and 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 since the transmission assembly 500 is connected to the self-cleaning assembly 300 and the filtering assembly 200 is connected to the self-cleaning assembly 300, when a user needs to remove the filtering assembly 200 and the self-cleaning assembly 300 to wash them, the user can remove the base 310 from the housing 100 to 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, and 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 the filtration assembly 200 and the self-cleaning assembly 300 and clean the filtration assembly 200 and the self-cleaning assembly 300 without touching the drive assembly 400, which is advantageous in avoiding safety hazards caused by touching the drive assembly 400. Furthermore, the drive assembly 400 is hidden within the housing 100, which is advantageous in providing protection and avoiding damage from external influences.

[0052] In some embodiments, as shown in FIG. 2 , the housing 100 further includes a through-hole 120 and a mounting groove 130. For example, a part 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 opened. The through-hole 120 communicates with the mounting groove 130, and the through-hole 120 is located above the mounting groove 130. The mounting member 311 is provided in the mounting groove 130. The self-cleaning assembly 300 is provided inside the mounting member 311, and the transmission assembly 500 is provided 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, the mounting member 311 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, the user can remove the bracket 312 and the filter 210 together with the mounting member 311 from the housing 100 by removing the mounting member 311 from the mounting groove 130 through the through hole 120, thereby realizing removal of the filter assembly 200 and the self-cleaning assembly 300. In this way, it is advantageous to reduce the difficulty of removing and installing the filter assembly and the self-cleaning assembly, and to facilitate the user's cleaning of the removed filter 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, and therefore prevents 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 plate 191 of the housing 100, and therefore allows the mounting member 311 to slide forward and disengage from the mounting groove 130.

[0057] It should be noted that when the air conditioner indoor unit 1000 is in operation, the position limiting block 160 is in a 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 an 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 a 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 installed on the base 310 and located 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 Fig. 3 and Fig. 9, the air conditioner indoor unit 1000 further includes an insertion groove 150. The insertion groove 150 is provided in the front plate 191 of the housing 100. The ash drop box 360 is installed in the insertion groove 150, and the ash drop 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 provided at an interval along the length direction of the air conditioner indoor unit 1000 (i.e., the left-right direction in Fig. 9). The first side wall 151 is provided with a first engagement groove 153, and the second side wall 152 is provided with a second engagement groove 154. As shown in Fig. 12, the ash drop box 360 is provided with a first engagement block and a second engagement block that are provided at an interval 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 away foreign matter attached 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 operated, 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 to remove the foreign matter adhered to the filter 210. 210 This is advantageous in improving the cleaning effect.

[0064] In some embodiments, as shown in Figures 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, so as to harmonize 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 through 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 a filtering section 211 and a blocking section 212 connected in sequence. Filter section 211 is configured to filter air entering housing 100 from suction port 110. Blocking section 212 is configured to block air entering housing 100 from suction port 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 from suction port 110. When filter 210 is in the blocking position, blocking unit 212 covers suction port 110 and blocks air entering housing 100 from suction port 110.

[0068] When the air conditioner indoor unit 1000 is operating, filter 210 is in the filtering position, and filtering section 211 covers suction port 110 to filter the air entering through suction port 110. When the air conditioner indoor unit is stopped, filter 210 moves from the filtering position to the blocking position, and blocking section 212 covers suction port 110, so that air and dust are blocked by blocking section 212, preventing dust from entering the inside of 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 having no holes, and air and dust cannot pass through. For example, the blocking section 212 is made of a plastic film, and a heat fusion 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 stops operating, 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 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 representing execution of a self-cleaning mode to the controller. For example, the signal is a signal instructing execution or stop of the self-cleaning mode of 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 representing execution of the self-cleaning mode to the controller. When the amount of foreign matter on the filter 210 is less than the preset amount, the sensor sends a signal representing stop of the self-cleaning mode to the controller.

[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 an operation instructed by the signal. For example, when a signal indicative of 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 indicative of stopping the self-cleaning mode is received from the sensor, the controller controls the air conditioner indoor unit 1000 to stop the self-cleaning mode.

[0073] For example, after the air conditioner indoor unit 1000 has been operating for a certain period of time, the 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 from the air outlet to the room by the fan assembly 700. Therefore, the amount of foreign matter adhering to the filter 210 facing the air inlet 110 in the air conditioner indoor unit 1000 increases. When the amount of foreign matter on the filter 210 reaches a preset amount, the sensor sends a signal indicating the execution of a self-cleaning mode to the controller.

[0074] The controller receives a signal indicating the 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, and drives the filter 210 to move along a preset trajectory. The first cleaning brush 320 is installed opposite to a different region of the filter 210 and can clean the region of the filter 210 that is installed opposite to the first cleaning brush 320.

[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 objects on the filter 210 wound around the first reel 330, and the foreign objects fall into the dust collection box 350, thereby realizing collection of the foreign objects. When there are a lot of foreign objects in the dust collection box 350, the dust collection box 350 can be removed for cleaning.

[0076] In some embodiments of the present disclosure, another air conditioner indoor unit 100A is provided. 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 a wall of a room. The back panel 13 is the side panel that is closer to the wall when the air conditioner indoor unit is attached to a 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 along 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 shown 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 left side plate of the air conditioner indoor unit 100A, and the second side plate 15 is a right side plate of the air conditioner indoor unit 100A.

[0079] The housing 10 has at least one air inlet 11 and an air outlet. A part of the top of the housing 10 is opened to form the air inlet 11. For example, as shown in Fig. 19, the housing 10 has two air inlets 11, and the two air inlets 11 are respectively installed at the top of the housing 10 and are provided at an interval along the length direction of the housing 10.

[0080] A part of the bottom of the housing 10 is opened to form the air outlet. The indoor heat exchanger 20 is provided in the housing 10 and configured to exchange heat with the indoor air entering through the inlet 11. The fan assembly 30 is installed on the side of the indoor heat exchanger 20 away from the 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 inlet 11 and exchanges heat between the indoor air and the indoor heat exchanger 20, and then pumps out the indoor air that has been heat exchanged by the indoor heat exchanger 20 through the air outlet.

[0081] It is understood that indoor air enters the housing 10 from 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, which is blown out into the room from 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 from 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, 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 in the housing 10 and 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 in 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 configured to move the self-cleaning assembly under the driving of the drive assembly 60, causing the self-cleaning assembly 50 to remove foreign matter adhering to the filter 40, thereby maintaining the cooling efficiency or heating efficiency of the air conditioner indoor unit 100A.

[0086] In some embodiments, as shown in FIG. 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 provided in the housing 10 and is adjacent to the front plate 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 close to the back plate 13, and extends along the thickness direction of the housing 10 (i.e., the front-rear direction shown in FIG. 19). The bracket 512 is configured to support the filter 40. The filter 40 is installed on the bracket 512, and may move on the bracket 512 along a preset trajectory.

[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 the second reel 53, the first reel 52, and the cleaning brush assembly 54 each extend 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 disposed adjacent to the first reel 52, and is configured to clean foreign matter on the filter 40 when the first reel 52 winds up the filter 40 or when the first reel 52 winds up the filter 40 or when the filter 40 is unwound.

[0088] The self-cleaning assembly 50 further includes a cleaning cavity 56. The cleaning cavity 56 is defined in 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 to form the first opening 563. The bottom of the cleaning cavity 56 is open to form 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 in the cleaning cavity 56. The dust collecting box 55 is disposed below the second opening 564 and configured to accommodate 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 along opposite directions. In the cleaning process by the self-cleaning assembly 50, the filter 40 is wound up on the first reel 52 and wound down on the second reel 53, or the filter 40 is wound down on the first reel 52 and wound up 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 wound down, the cleaning brush assembly 54 generates a relative movement with the filter 40. The cleaning brush assembly 54 can be installed opposite different regions of the filter 40 and can clean different regions of the filter 40. Foreign matter on the filter 40 is cleaned into the dust collection box 55 through the cleaning brush assembly 54.

[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 the second mounting portion 5412 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] Since the second mounting portion 5412 does not move along the height direction of the housing 10 (i.e., the up-down direction shown in FIG. 19), the elastic material 543 applies an elastic force to the first mounting portion 5411 of the same magnitude but opposite direction to the force applied by the cleaning brush 542 to the first reel 52, thereby allowing the cleaning brush 542 to elastically abut against the first reel 52. The cleaning brush base 541 abuts the cleaning brush 542 against the first reel 52 via the elastic material 543, realizing that the cleaning brush 542 always abuts against the first reel 52 during the process of rotation of the first reel 52 or the cleaning brush base 541, which 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, and the service life of the cleaning brush 542 is extended.

[0093] It is 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 site, so that the foreign matter brushed off from the filter 40 falls into the dust collection box 55 and is collected. Since the first reel 52 vibrates or vibrates radially during rotation, the elasticity of the elastic material 543 is advantageous in improving the stability of the abutment between the cleaning brush 542 and the first reel 52 and 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, the indoor air continues to enter 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 there is a large amount of foreign matter adhering to the filter 40, the air conditioner indoor unit 100A executes the self-cleaning mode to clean the foreign matter adhering to the filter 40 and maintain the filtering ability of the filter 40, thereby improving the cooling efficiency 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, so that the filter 40 is wound up on the second reel 53 and wound down on the first reel 52, or the filter 40 is wound down on the second reel 53 and 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 disposed opposite to different regions of the filter 40 and cleans different regions of the filter 40.

[0096] In some embodiments, as shown in FIG. 20, FIG. 21 and FIG. 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 direction of the housing 10. The housing 10 further includes a positioning tool, which is provided on a side plate along the length direction of the housing 10. The dust collection box 55 and the housing 10 realize a detachable connection between the dust collection box 55 and the housing 10 by fitting and engaging the engagement hole 553 with the positioning tool. When it is necessary to clean foreign objects in the dust collection box 55, the dust collection box 55 may be removed from the housing 10 via the engagement hole 553 and the positioning tool, and the foreign objects in the dust collection box 55 may be cleaned.

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

[0098] In some embodiments, as shown in FIG. 24 , the cleaning brush assembly 54 further includes a mounting cavity 544. The side of the second mounting portion 5412 facing the cleaning brush 542 is open, 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, so that when the first mounting portion 5411 is pressed, the first mounting portion 5411 can move toward the second mounting portion 5412. Thus, providing the mounting cavity 544 in the cleaning brush assembly 54 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 material 543 is installed by fitting into any one of the positioning posts 545.

[0100] For example, in the case where 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 fitted into the positioning posts 545. Thus, providing the positioning posts 545 on the cleaning brush assembly 54 is advantageous for realizing position 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 are fitted and engaged with each other, thereby connecting 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 in the height direction of the housing 10 within the engagement groove 5414.

[0102] For example, when at least one first mounting portion 5411 includes 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. A plurality of locking devices 5415 are provided at both side walls of the second mounting portion 5412 along the width direction of the housing 10 in correspondence with the plurality of engagement grooves 5414, 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 members 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 is 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 manner, 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 member 5415. This is advantageous in improving the assembly efficiency of 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 engages into 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 abuts 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 configure 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 connection 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 the engagement groove 5414 with the locking tool 5415. When assembling the first mounting portion 5411 and the second mounting portion 5412, 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, and form a positional restriction for the second mounting portion 5412, 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 provides the first mounting portion 5411 with good structural strength, which is advantageous for mounting the first mounting portion 5411 and the cleaning brush 542, makes the mounting of the cleaning brush 542 more secure, and prevents 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 that is away from the second mounting portion 5412. The cleaning brush 542 is provided in the mounting groove 57. The bottom surface of the mounting groove 57 is flush with the surface of the cleaning brush 542 that is closer to the first reel 52, and is formed in an arc shape, so that when the cleaning brush 542 abuts against the first reel 52, the filter 40 can be cleaned, and foreign matter generated by cleaning can 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, and can improve the stability of the mounting of the cleaning brush 542 and improve 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 respectively disposed at both 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 on both ends of the second reel 53, the two second gears 72 are provided on both ends of the first reel 52, and the two third gears 73 are provided on 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 driving motor 61 and the second gear 72 as an example, when the self-cleaning assembly 50 executes the self-cleaning mode, the first driving motor 61 drives the second gear 72 to rotate along a first direction, thereby rotating the first reel 52 along the first direction. At the same time, the second gear 72 further rotates the first gear 71 along a second direction, thereby rotating the second reel 53 along the second direction. The second driving 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 preset trajectory, and relative motion occurs between the cleaning brush 542 and the filter 40, thereby realizing cleaning of the filter 40 by the cleaning brush 542.

[0117] It is 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 through 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 through 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 through 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, that is, the air conditioner indoor unit 100A includes two of the self-cleaning devices. The two self-cleaning assemblies 50 are provided at an interval along the length direction 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 close to 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 both ends of each 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] In some embodiments, as shown in FIG. 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 toward the base 51 along the length direction of the housing 10. 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. In this way, it is advantageous to reduce the intrusion of moisture and dust in the air into the accommodation space, avoiding 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 FIG. 25 and FIG. 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 direction 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 gripping portion 5161, which is provided on the top of the connecting plate 516. As shown in FIG. 27, the gripping portion 5161 includes a plurality of grooves, which are recessed toward the dust collecting box 55 in the height direction of the housing 10 on the connecting plate 516. The plurality of grooves are provided continuously along the length direction of the housing 10. In this way, it is convenient for the user to grip the self-cleaning assembly 50 when attaching or detaching the self-cleaning assembly 50, and the assembly efficiency of the self-cleaning assembly 50 is improved.

[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. In this way, it is advantageous to realize cleaning of the cleaning brush 542 in the cleaning cavity 56, improve the working efficiency of the cleaning brush 542, and when a part in the self-cleaning assembly 50 is broken, the part in the self-cleaning assembly 50 can be maintained through the base front cover 513, which is also advantageous to install and remove the parts in the self-cleaning assembly 50 (e.g., the second reel 53, the first reel 52, and the cleaning brush 542, etc.).

[0125] For example, as the self-cleaning assembly 50 operates for a long time, the cleaning brush 542 loses its ability to brush off foreign matter on the filter 40. 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] In some embodiments, as shown in FIG. 25, the base front cover 513 includes a rotating shaft 5131. The rotating shaft 5131 is provided on both ends of the base front cover 513 along the length direction of the housing 10. The base main body 511A further includes a rotating shaft hole, which is provided on the base main body 511A. The rotating shaft 5131 is fitted and engaged with the rotating 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 inverted upward, thereby realizing the opening of the front side of the cleaning cavity 56.

[0127] In some embodiments, as shown in FIGS. 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 in 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 realizing 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. Moreover, 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 in a clockwise direction 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 in a counterclockwise direction and the position limiting portion 546 rotates to the second position, the second position limiting protrusion 5462 abuts against the stopper portion 547, which limits 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 preventing the cleaning brush 542 from abutting against the first reel 52 and from being misaligned 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 the first stopper surface 5471 is connected to one end of the second stopper surface 5472, and the first stopper surface 5471 is located below the second stopper surface 5472. The other end of the first stopper surface 5471 extends obliquely downward in a direction approaching the back plate 13 along the thickness direction of the housing 10. The other end of the second stopper surface 5472 extends obliquely upward in a direction approaching the back plate 13 along the thickness direction of the housing 10.

[0137] For example, when the cleaning brush base 541 rotates in the clockwise direction and the position limiting portion 546 rotates to the first position, the first position limiting protrusion 5461 abuts against the first stopper surface 5471. The first stopper surface 5471 limits the first position limiting protrusion 5461 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.

[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 from the first stopper surface 5471, 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, improves the stability and reliability of the abutment between the position limiting portion 546 and the stopper portion 547, and reduces the rotation error of the cleaning brush assembly 54.

[0140] In some embodiments, as shown in FIGS. 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 close to the cleaning cavity 56. For example, the cleaning component 59 and the base front cover 513 may be connected by an adhesive or an engagement structure. The cleaning component 59 is provided on a side wall of the cleaning cavity 56 facing the stopper portion 547. When the position limiting portion 546 reciprocates 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 while the position limiting portion 546 is rotating from the first position to the second position. 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 and cleans the foreign matter on the cleaning brush 542, so that the cleaning brush 542 can be kept relatively clean.

[0142] In this manner, 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 deflection section 5132 and an extension section 5133. The deflection section 5132 is located between the two end covers 514, and the deflection section 5132 protrudes in a direction away from the central axis of the cleaning brush 542. The rotating shaft 5131 is connected to the side of the deflection section 5132 that is away from the cleaning brush 542. The extension section 5133 extends along the height direction of the housing 10. An upper end of the extension section 5133 is connected to a lower end of the deflection section 5132, and the lower end of the extension section 5133 is fitted and engaged with the dust collection box 55.

[0144] The base front cover 513 is a part of the cleaning cavity 56 and is configured to form a seal with the cleaning cavity 56 on the front side of the cleaning cavity 56. The avoiding section 5132 is located above the extending section 5133, and in the thickness direction of the housing 10, the avoiding section 5132 faces the cleaning brush 542. The rotating shaft 5131 is provided on the side of the avoiding section 5132 that is 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 extending section 5133 that is away from the avoiding section 5132 along the height direction of the housing 10 is fitted and engaged 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 is fitted and engaged with the base front cover 513 to form a seal with the cleaning cavity 56 on the front side and the lower side of the base main body 511A.

[0145] For example, as shown in FIG. 23, the avoidance section 5132 is formed in an arc shape protruding away from the central axis of the cleaning brush 542, and the central axis of the avoidance section 5132 overlaps with the central axis of the cleaning brush 542. In this way, it is advantageous to avoid interference between the base front cover 513 and the cleaning brush 542 when the base front cover 513 is fitted and engaged with the base main body 511A. It is also advantageous to increase the space utilization rate of the base 51, limit the gap between the base front cover 513 and the cleaning brush 542, and allow dust, particulate matter, etc. generated during the rotation process of the cleaning brush 542 to fall intensively along the avoidance section 5132 into the dust collection box 55, thereby reducing the dust flying in the cleaning cavity 56 and reducing the volume of the self-cleaning assembly 50.

[0146] In some embodiments, as shown in Fig. 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 the base rear cover 515 is disposed at the rear side of the cleaning cavity 56 along the thickness direction of the housing 10. The base rear cover 515 faces the base front cover 513, and the base rear cover 515 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 in the connecting groove.

[0147] When the base rear lid 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 lid 515 and the first reel 52. When the base rear lid 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 lid 515 is connected to the base main body 511A, the connection groove is provided on the side of the base main body 511A facing the first reel 52, and the sealant is provided in the connection groove, and the sealant is removably connected to the connection 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 to abut against the first reel 52. For example, the sealing material is a sponge foamed with polyurethane having high resilience.

[0149] In this way, by providing the connecting groove in the base rear cover 515 and providing the sealing material in the connecting groove, the first opening 563 of the cleaning cavity 56 can be abutted against the first reel 52 via the sealing material to form 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 extends the service life of the air conditioner indoor unit 100A.

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

[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 at a lower portion of the cleaning cavity 56. The first extension section 561 is connected to a front wall of the cleaning cavity 56, and the second extension section 562 is connected to a 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, so that 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 that the foreign matter will accumulate in the cleaning cavity 56 or the second opening 564, and reducing the risk that the foreign matter will fall into 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 avoiding 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 may be provided on a connecting plate 516 and 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 from an end of the base 51, and engages with the housing 10 to achieve attachment of the self-cleaning assembly 50. When it is necessary to remove the self-cleaning assembly 50, the insert 58 is moved so that the insert 58 moves toward the center of the base 51 along the length of the housing 10 to separate the insert 58 from the housing 10, thereby 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 attaching and detaching the self-cleaning assembly 50, and improves the efficiency of attaching and detaching 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 disposed on an outer circumferential surface of the cleaning brush reel 548. The cleaning brush reel 548 is connected to the third gear 73. Thus, 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. The stopper portion 547 is provided on an inner wall of the cleaning cavity 56. The position limiting portion 546 is configured to limit a rotation angle of the cleaning brush assembly 54 by abutting against the stopper portion 547.

[0161] It will be understood that when the air conditioner indoor unit 100A executes the 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 enabling the cleaning brush 542 to engage with the filter 40 wound on the first reel 52, and clean away foreign matter on the filter 40.

[0162] It is understood that by engaging the limiting portion 546 with the stopper portion 547, the rotation angle of the cleaning brush reel 548 can be limited, 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 too large rotation angle of the cleaning brush reel 548, thereby making it possible to prevent foreign matter on the filter 40 from being unable to be effectively cleaned.

[0163] In addition, 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). In this way, the rotation error of the cleaning brush reel 548 can be reduced, and the influence of inertia on the rotation of the cleaning brush reel 548 to the initial position can be avoided, 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 rotational range becomes too large, making the first position limiting protrusion 5461 and the second position limiting protrusion 5462 unstably abut against the stopper portion 547, 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°, that is, the first position limiting protrusion 5461 and the second position limiting protrusion 5462 are distributed at intervals along the circumferential direction of the cleaning brush reel 548 and are parallel to each other. This is advantageous to improve the reliability of the first position limiting protrusion 5461 and the second position limiting protrusion 5462 engaging 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 in a clockwise direction, the first position limiting protrusion 5461 rotates to the first stopper surface 5471 and engages with the first stopper surface 5471. In the process of the position limiting portion 546 rotating from the first position to the second position, the first position limiting protrusion 5461 is released from the engagement with the stopper portion 547, and then the second position limiting protrusion 5462 engages with the stopper portion 547, so that the cleaning brush 542 can clean foreign matter on the filter 40.

[0167] It can be understood that the installation as described above 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, and in reducing the rotation error of the cleaning brush reel 548.

[0168] In some embodiments, as shown in FIGS. 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 close to the cleaning cavity 56. For example, the cleaning component 59 and the base front cover 513 may be connected by an adhesive or an engagement structure. The cleaning component 59 is provided on a side wall of the cleaning cavity 56 facing the stopper portion 547. When the position limiting portion 546 reciprocates 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 during the process of the position limiting portion 546 rotating from the first position to the second position, thereby cleaning the filter 40. During the process of the position limiting portion 546 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 in a relatively clean state.

[0170] In this manner, 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 easy 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 installed by fitting it 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 detached 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 manner, 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 parts 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 parts 59 are removably connected to the base 51, which facilitates installation of the air conditioner indoor unit 100A, simplifies the process and steps of installing the air conditioner indoor unit 100A, and improves the 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 trapezoid with curved sides, 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 limiting portion 546 needs to be designed linearly to reduce the occupied space, the vertical cross-sectional shape of the stopper portion 547 may be an isosceles trapezoid or a right-angled trapezoid. If the position limiting portion 546 needs to be designed curvedly to avoid other members, the vertical cross-sectional shape of the stopper portion 547 may be a curved-sided trapezoid or a semicircular shape.

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

[0179] It will be understood that since stopper portions 547 of different shapes can be applied to different air conditioner indoor units 100A and can engage with and engage with different position limiting portions 546, this 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. Along the axial direction of the cleaning brush reel 548, the first position limiting portion and the second position limiting portion substantially overlap each other.

[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, and the cleaning brush assembly 54 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 cleans the filter 40, rotate the cleaning brush 542 to the cleaning component 59, and cause the cleaning component 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. In the process of the filter 40 moving, the cleaning brush 542 can clean the dust and foreign matter on the filter 40, which is advantageous to 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 component 59, thereby generating relative motion between the cleaning brush 542 and the cleaning component 59, so that the cleaning component 59 can clean foreign matter attached to the cleaning brush 542.

[0191] The above-mentioned installation is advantageous for simplifying the structure of the self-cleaning assembly 50 and facilitating cleaning of the filter 40. In addition, by controlling the operation of the first reel 52 and the cleaning brush reel 548 using the above-mentioned control logic, the cleaning operation of the cleaning brush 542 on the filter 40 and the cleaning operation of the cleaning brush 542 on the cleaning part 59 can be separated, and mutual interference between the two operations can be avoided. The simplicity of the control logic can improve the reliability of the self-cleaning operation performed by the self-cleaning assembly 50, and can improve the cleaning ability of the self-cleaning assembly 50 on the filter 40.

[0192] It will be understood that while the air conditioner indoor unit 100A is executing the self-cleaning mode, the cleaning part 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] For example, referring to FIG. 38 and FIG. 39, when the cleaning brush 542 is not in operation, that is, after the cleaning brush 542 is 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 contact either the filter 40 or the cleaning element 59, for example, the cleaning brush 542 is located between the cleaning element 59 and the first reel 52. By installing in this manner, on the one hand, it is possible to effectively prevent foreign matter on the cleaning brush 542 from being attracted to the filter 40, so that the cleaning ability of the filter 40 can be improved. On the other hand, when the cleaning brush 542 cleans the filter 40, the cleaning brush 542 can rotate to the first reel 52 in a relatively short path, which is advantageous to 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 located 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 located 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 dust and foreign matter on the filter 40.

[0198] 38 and 39, when the cleaning brush 542 is located 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 part 59, and the cleaning brush 542 does not contact either the filter 40 or the cleaning part 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 manner, 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 for improving the cleaning effect of the cleaning brush 542 on the filter 40.

[0202] When the cleaning brush 542 is located in the third set 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 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 in different positions when in different operating conditions, thereby improving the precision of control over the cleaning brush 542 and thus improving the reliability of operation of the self-cleaning assembly 50.

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

[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 from the first set position 5421 to the second set position 5422 in a clockwise direction 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 via the third set position 5423 to the first set position 5421 after the cleaning brush 542 cleans the foreign matter on the cleaning brush 542, so that the cleaning part 59 cleans the 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 part 59 can effectively remove dust or foreign matter on the cleaning brush 542, which is advantageous to improve the cleaning degree of the cleaning brush 542 and improve 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 along 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 located at the second setting 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, so that the filter 40 wound on the second reel 53 is 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, so that the filter 40 is 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 cleans 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 are 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 moves to the first set position 5421 (i.e., after the cleaning part 59 cleans 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 via 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 manner, 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 cleans 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 motion of the cleaning brush 542 between the third setting position 5423 and the first setting position 5421 by controlling the rotation direction of the cleaning brush reel 548, so that the cleaning brush 542 can repeatedly move with the cleaning component 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 rotation speed of the cleaning brush 542 is a first rotation speed Ra. When the cleaning brush 542 rotates from the first set position 5421 to the second set position 5422, the rotation speed of the cleaning brush 542 is a second rotation speed Rb. Ra is smaller than Rb.

[0219] By setting Ra smaller than Rb, the cleaning brush 542 is rotated at a relatively slow rotational speed (i.e., Ra) when the cleaning part 59 cleans the cleaning brush 542, and before the cleaning brush 542 cleans the filter 40, the cleaning brush 542 is rotated to the second set position 5422 at a relatively fast rotational speed (i.e., Rb), thereby effectively preventing foreign matter falling from the cleaning brush 542 from falling into the cleaning cavity 56 when the cleaning part 59 cleans 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 component. The dust suction component is provided on a side wall of the base 51 and is adjacent to the first reel 52. The dust suction component is configured to attract dust and foreign matter falling from the cleaning brush 542 during the process in which the cleaning component 59 cleans the cleaning brush 542, thereby preventing the dust falling from the cleaning brush 542 from leaking out of the cleaning cavity 56 and improving the cleanliness inside the housing 10. For example, the dust suction component 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 at the second setting position 5422, the filter 40 wound on the first reel 52 comes into contact with the outer periphery of the cleaning brush 542, so that the cleaning brush 542 does not interfere with the rotation of the first reel 52 during the rotation of the cleaning brush 542, and the cleaning brush 542 effectively removes foreign matter and dust on the filter 40, thereby improving the cleaning effect and cleaning efficiency of the cleaning brush 542. In addition, by arranging the first reel 52 and the cleaning brush 542 vertically, the dimension of the housing 10 in the front-rear direction (for example, the front-rear direction shown in FIG. 34) can be reduced, which is advantageous for designing the housing 10 to be thinner and lighter.

[0223] It will be appreciated by those skilled in the art that the scope of the disclosure of the present invention is not limited to the specific embodiments described above, and that modifications and substitutions can be made to the specific elements of the embodiments without departing from the spirit of the present application. The scope of the 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 a 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 within 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 as the filter is 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; At least one stopper portion is provided on an inner wall of the base and corresponds to the at least one position limiting portion, and is configured to engage with the stopper portion and limit a rotation angle of the cleaning brush. Air conditioner indoor unit.

2. Any one of the at least one position limiting unit may be A first position limiting protrusion; a second position limiting protrusion, the first position limiting protrusion and the second position limiting protrusion being spaced apart from each other 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 is reached, 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. The air conditioner indoor unit according to claim 1.

3. 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 2.

4. 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 2 or 3.

5. 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 any one of claims 2 to 4.

6. The self-cleaning assembly further comprises a cleaning component, the cleaning component being disposed 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 5.

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

8. The vertical cross-sectional shape of the stopper portion is an isosceles trapezoid, a right-angled trapezoid, a trapezoid with curved sides, or a semicircular shape. The air conditioner indoor unit according to any one of claims 1 to 7.

9. The at least one position limiting portion includes two position limiting portions, and the two position limiting portions are provided at both ends of the cleaning brush reel along an axial direction of the cleaning brush reel, respectively. The air conditioner indoor unit according to any one of claims 1 to 8.

10. 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 any one of claims 1 to 8.

11. An air conditioner indoor unit, A housing having an inlet and an outlet; A filter that covers the air inlet and is configured to filter foreign matter in the indoor air; a self-cleaning assembly configured to remove foreign matter on the filter; A controller, The self-cleaning assembly includes: a base having a cleaning cavity defined therein; a first reel rotatably connected to the base and connected to one end of the filter; a second reel rotatably connected to the base and 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 cleaning component provided on an inner wall of the base and configured to clean foreign matter on the cleaning brush; a dust collection box disposed at a bottom of the cleaning cavity and configured to collect foreign matter falling from the cleaning brush and the cleaning component; the controller is communicatively connected to the first reel, the second reel, and the cleaning brush reel, respectively, and configured to control rotation of the first reel, the second reel, and the cleaning brush reel; The controller: 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 to the first reel and bring the cleaning brush into contact with the filter wound around the first reel; By controlling the rotation of the first reel, the filter is moved and the cleaning brush is caused to clean the foreign matter on the filter; and controlling rotation of the cleaning brush assembly to rotate the cleaning brush to the cleaning component after the cleaning brush has cleaned the filter, thereby allowing the cleaning component to clean foreign matter on the cleaning brush. Air conditioner indoor unit.

12. The controller is further configured to control rotation of the cleaning brush reel before the air conditioner indoor unit operates in a self-cleaning mode, so that the cleaning brush is separated from the filter and the cleaning component, respectively. The air conditioner indoor unit according to claim 11.

13. 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 12.

14. The controller: Before the air conditioner indoor unit operates in a self-cleaning mode, the cleaning brush is positioned at the first set position by controlling the rotation of the cleaning brush reel; When the air conditioner indoor unit is operating in a self-cleaning mode, the cleaning brush is rotated from the first set position to the second set position by controlling rotation of the cleaning brush reel; The cleaning brush may be further configured to rotate the cleaning brush from the second set position, through the third set position, to the first set position by controlling rotation of the cleaning brush reel after the cleaning brush has cleaned the filter; The cleaning component is further configured to clean foreign matter on the cleaning brush during a process in which 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 13.

15. The controller: further configured to control the first reel to rotate along a first direction to wind the filter onto the first reel; During the process of winding the filter onto the first reel, the cleaning brush is positioned at the second setting position and configured to clean foreign matter on the filter. The air conditioner indoor unit according to claim 14.

16. 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 along 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 15.

17. The controller: After the cleaning brush cleans the filter, the first reel is controlled to rotate along a second direction to release the filter from the first reel and move the filter to the suction port; and controlling rotation of the cleaning brush reel after the first reel stops rotating along 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 15.

18. The controller: The cleaning component may be further configured to clean foreign matter on the cleaning brush by controlling the cleaning brush to move from the second set position to the first set position, In a process in which the cleaning part 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 15.

19. the controller is further configured to control rotation of the cleaning brush reel to reciprocate the cleaning brush between the third set position and the first set position after the cleaning brush has cleaned the filter; 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 14 to 18.

20. 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; In a process in which the cleaning brush rotates from the first set position to the second set position, a rotation speed of the cleaning brush is a second rotation speed; the first rotation speed is less than the second rotation speed; The air conditioner indoor unit according to any one of claims 14 to 19.

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