Air conditioner and control method thereof

Abstract

The invention provides an air conditioner and a control method thereof. The air conditioner comprises an outdoor unit and an indoor unit. The indoor unit is connected with the outdoor unit and comprises a shell, a filter screen, a self-cleaning assembly and a controller. The self-cleaning assembly is configured to execute an automatic cleaning function so as to remove impurities on the filter screen. The controller is configured to obtain the accumulative operation duration of the air conditioner; if it is determined that the accumulative operation duration is larger than a first preset time threshold value and smaller than a second preset time threshold value, and the air conditioner is in a shutdown state, the self-cleaning assembly is controlled to execute a cleaning function; wherein the first preset time threshold value is smaller than the second preset time threshold value; and after the cleaning function is executed, the air conditioner is controlled to enter the next cleaning period.

Description

Air conditioner and control method thereof

[0001] This application claims priority to PCT International Patent Application No. PCT / CN2023 / 096723 filed on May 29, 2023, which claims priority to Chinese Patent Application No. 202210618975.5 filed on May 31, 2022, and Chinese Patent Application No. 202223608409.0 filed on December 30, 2022, and PCT International Patent Application No. 202223608409.0 filed on December 30, 2022. 2180.X; the priority of the PCT international patent application with application number PCT / CN2023 / 105581 filed on July 3, 2023, which claims the priority of the Chinese patent application with application number 202321340922.8 filed on May 29, 2023; and the priority of the Chinese patent application with application number 202211342323.X filed on October 31, 2022, all of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioner and a control method thereof. Background Art

[0003] Air conditioning has become one of the essential home appliances in every household. As a part of the air conditioner, the indoor unit is installed indoors and is used to exchange heat with the indoor air to increase or decrease the indoor temperature.

[0004] The indoor unit filters the air entering the indoor unit through the filter to prevent dust and other debris in the air from entering the indoor unit, and uses the self-cleaning component to clean the debris attached to the filter to keep the indoor unit running efficiently.

[0005] Summary of the Invention

[0006] On the one hand, an air conditioner is provided, comprising: an outdoor unit and an indoor unit. The indoor unit is connected to the outdoor unit, and the indoor unit comprises: a housing, a filter, a self-cleaning component and a controller. The housing comprises an air inlet. The filter covers the air inlet. The self-cleaning component is configured to perform a cleaning function to remove debris on the filter. The controller is configured to: obtain the accumulated running time of the air conditioner; if it is determined that the accumulated running time is greater than a first preset time threshold and less than a second preset time threshold, and the air conditioner is in a stopped state, then control the self-cleaning component to perform the cleaning function; wherein the first preset time threshold is less than the second preset time threshold; after the cleaning function is executed, control the air conditioner to enter the next cleaning cycle.

[0007] On the other hand, a method for controlling an air conditioner is provided, wherein the air conditioner includes an outdoor unit and an indoor unit. The indoor unit is connected to the outdoor unit and includes a housing, a filter, a self-cleaning component, and a controller. The housing includes an air inlet. The filter covers the air inlet. The self-cleaning component is configured to perform a cleaning function to remove debris from the filter. The controller is coupled to the indoor unit and the outdoor unit. The control method includes: obtaining the accumulated operating time of the air conditioner; if it is determined that the accumulated operating time is greater than a first preset time threshold and less than a second preset time threshold, and the air conditioner is in a shutdown state, controlling the self-cleaning component to perform the cleaning function; wherein the first preset time threshold is less than the second preset time threshold; after the cleaning function is completed, controlling the air conditioner to enter the next cleaning cycle; if it is determined that the accumulated operating time is greater than or equal to the second time threshold, controlling the air conditioner to shut down and controlling the self-cleaning component to perform the cleaning function. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a perspective view of an indoor unit according to some embodiments;

[0009] FIG2 is a perspective view of a housing of an indoor unit according to some embodiments;

[0010] FIG3 is a partial enlarged view of the circle A in FIG2 ;

[0011] FIG4 is a front view of an indoor unit according to some embodiments;

[0012] FIG5 is a cross-sectional view taken along the line BB in FIG4 ;

[0013] FIG6 is a perspective view of a base of an indoor unit according to some embodiments;

[0014] FIG7A is a cross-sectional view of a base of an indoor unit according to some embodiments;

[0015] 7B is a perspective view of a first reel and a second reel of an indoor unit according to some embodiments;

[0016] 8A is a structural diagram of a first portion of a first reel or a third portion of a second reel of an indoor unit according to some embodiments;

[0017] 8B is a structural diagram of the second portion of the first reel or the fourth portion of the second reel of an indoor unit according to some embodiments;

[0018] FIG9 is a perspective view of an indoor unit with a panel removed according to some embodiments;

[0019] FIG10 is a perspective view of an indoor unit with a panel and a housing removed according to some embodiments;

[0020] FIG11 is a partial enlarged view of circle C in FIG10 ;

[0021] FIG12 is a perspective view of another base of an indoor unit according to some embodiments;

[0022] FIG13 is a structural diagram of a connecting rod, a transmission assembly, and a driving assembly of an indoor unit according to some embodiments;

[0023] FIG14 is a partial enlarged view of circle D in FIG13;

[0024] FIG15 is a perspective view of an indoor unit according to some embodiments with a panel and a base removed;

[0025] FIG16 is a partial enlarged view of circle E in FIG15 ;

[0026] FIG17 is a structural diagram of a filter of an indoor unit according to some embodiments;

[0027] FIG18 is a cross-sectional view of an indoor unit according to some embodiments;

[0028] FIG19 is a block diagram of another indoor unit according to some embodiments;

[0029] FIG20 is a perspective view of another indoor unit according to some embodiments;

[0030] FIG21 is an exploded view of a housing and a self-cleaning assembly of another indoor unit according to some embodiments;

[0031] FIG22 is an exploded view of a self-cleaning assembly of another indoor unit according to some embodiments;

[0032] FIG23 is a partial enlarged view of the circle P in FIG22;

[0033] FIG24 is a cross-sectional view of another self-cleaning assembly of an indoor unit according to some embodiments;

[0034] FIG25 is an exploded view of a cleaning brush assembly of another indoor unit according to some embodiments;

[0035] FIG26 is an exploded view of a self-cleaning assembly of another indoor unit according to some embodiments;

[0036] FIG27 is an exploded view of a driving assembly of another indoor unit according to some embodiments;

[0037] FIG28 is a perspective view of a stopper of another indoor unit according to some embodiments;

[0038] FIG29 is a block diagram of an air conditioner according to some embodiments;

[0039] FIG30 is a flow chart of a method for controlling an air conditioner according to some embodiments;

[0040] FIG31 is a flow chart of another method for controlling an air conditioner according to some embodiments;

[0041] FIG32 is a flow chart of another method for controlling an air conditioner according to some embodiments;

[0042] FIG33 is a flow chart of another method for controlling an air conditioner according to some embodiments;

[0043] FIG34 is a flow chart of another method for controlling an air conditioner according to some embodiments;

[0044] FIG35 is a flowchart of another method for controlling an air conditioner according to some embodiments;

[0045] FIG36 is a flow chart of another method for controlling an air conditioner according to some embodiments;

[0046] FIG37 is a flowchart of yet another method for controlling an air conditioner according to some embodiments. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings to clearly and completely describe some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0048] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0049] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0050] For ease of description, unless otherwise specified, references to up, down, left, right, front, and back in this disclosure are based on the indoor unit's operating state. The side of the indoor unit facing the user during operation is the front side, and the side facing away from it is the back side. The height of the indoor unit is the up and down direction. The length of the indoor unit is the left and right direction. The thickness of the indoor unit is the front and back direction.

[0051] Air conditioners 1 typically include split-type air conditioners 1 and integrated air conditioners 1. Split-type air conditioners 1 include an indoor unit and an outdoor unit. Integrated air conditioners integrate all components of air conditioner 1 into a single housing. Integrated air conditioners can typically be moved freely within a room. Some embodiments of the present disclosure may be applied to either split-type or integrated air conditioners.

[0052] Taking a split-type air conditioner as an example, the indoor unit includes an indoor heat exchanger, an indoor fan, and an indoor expansion valve, while the outdoor unit includes an outdoor heat exchanger, a compressor, and an outdoor expansion valve. The compressor, condenser (either indoor or outdoor heat exchanger), expansion valve (either indoor or outdoor expansion valve), and evaporator (either outdoor or indoor heat exchanger) perform the refrigerant cycle of the air conditioner 1. The refrigerant cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and circulates the refrigerant to the regulated side. The indoor fan is configured to facilitate heat exchange between the refrigerant flowing in the heat transfer tubes of the indoor heat exchanger and the indoor air to assist in temperature regulation.

[0053] With the widespread use of air conditioners, users' expectations for them are constantly increasing. The indoor unit consists of an air inlet and an air outlet. A filter is installed at the air inlet to filter the air entering the indoor unit and prevent dust and other debris from entering the indoor unit. After the indoor unit has been running for a while, excessive dust and other debris may clog the filter, causing a decrease in air intake and lowering the cooling or heating efficiency of the air conditioner.

[0054] Typically, a roller brush is installed in the indoor unit to remove debris attached to the filter, allowing the filter to maintain a high filtering capacity, thereby maintaining the cooling or heating efficiency of the indoor unit. When the indoor unit has been operating for a period of time, a lot of debris will be attached to the filter, and there will be a need to remove the filter assembly to clean the filter, roller brush and other structures in the filter assembly. During the process of removing the filter assembly, since the drive motor that drives the filter to move relative to the roller brush is connected to the filter, the drive motor must be removed before the filter assembly can be removed. However, when removing the filter assembly, there is a safety hazard of electric shock due to contact with the drive motor. In addition, the filter assembly is not easy to install and disassemble, which makes the assembly efficiency of the indoor unit low and is not conducive to users cleaning the filter assembly.

[0055] Some embodiments of the present disclosure provide an indoor unit 1000, as shown in Figures 1, 4, 5 and 10, the indoor unit 1000 includes a housing 100, a filter assembly 200, a self-cleaning assembly 300, a drive assembly 400 and a transmission assembly 500 (see Figure 11).

[0056] As shown in Figure 18, the housing 100 includes a first plate 191, a second plate 192, a third plate 193, and a fourth plate 194. The first plate 191 is the side plate on the side away from the wall when the indoor unit is installed on the indoor wall. The second plate 192 is the side plate on the side closer to the wall when the indoor unit is installed on the indoor wall. The first side plate 193 and the fourth plate 194 connect the first plate 191 and the second plate 192, respectively, and extend in directions perpendicular to the first plate 191 and the second plate 192, respectively. For example, the first side plate 193 is the side plate on one side of the housing 100 in the longitudinal direction (i.e., the left-right direction as shown in Figure 1), and the fourth plate 194 is the side plate on the other side of the housing 100 in the longitudinal direction (i.e., the left-right direction as shown in Figure 1). For example, the first side plate 193 is the side plate on the left side of the indoor unit 1000, and the fourth plate 194 is the side plate on the right side of the indoor unit 1000.

[0057] The housing 100 includes an air inlet 110. For example, a portion of the top of the housing 100 is open to form the air inlet 110. The filter assembly 200 is disposed within the housing 100 and is located at the air inlet 110. The filter assembly 200 is configured to filter air entering the indoor unit 1000 from the air inlet 110 to prevent foreign matter in the air from entering the indoor unit 1000. The self-cleaning assembly 300 is disposed within the housing 100 and is configured to remove foreign matter attached to the filter assembly 200.

[0058] The drive assembly 400 is disposed on the housing 100, and the transmission assembly 500 is disposed within the housing 100. The transmission assembly 500 is respectively connected to the self-cleaning assembly 300 and the drive assembly 400, and is configured to drive the self-cleaning assembly 300 to move under the drive of the drive assembly 400, so that the self-cleaning assembly 300 removes debris attached to the filter assembly 200 to perform a self-cleaning operation, thereby maintaining the cooling or heating efficiency of the indoor unit 1000.

[0059] In some embodiments, as shown in Figures 2 and 5, the indoor unit 1000 further includes an indoor heat exchanger 600, a first fan assembly 700, and an air outlet. The indoor heat exchanger 600 is disposed within the housing 100 and is configured to exchange heat with indoor air entering through the air inlet 110. The first fan assembly 700 is disposed on a side of the indoor heat exchanger 600 away from the air inlet 110 and is configured to draw in and pump out indoor air.

[0060] For example, when the first fan assembly 700 is operating, the fan rotates, sucking indoor air in through the air inlet 110, exchanging heat with the indoor heat exchanger 600, and then pumping the indoor air, which has exchanged heat with the indoor heat exchanger 600, out through the air outlet. The indoor unit 1000 heats or cools the indoor air through the indoor heat exchanger 600, thereby increasing or decreasing the indoor temperature and achieving a heating or cooling effect.

[0061] In some embodiments, as shown in Figures 6, 7A, and 7B, the filter assembly 200 includes a filter 210. The filter 210 is disposed between the air inlet 110 and the indoor heat exchanger 600 (as shown in Figure 5), and covers the air inlet 110, so that the filter 210 can filter foreign matter in the air entering the indoor unit 1000 from the air inlet 110.

[0062] The self-cleaning assembly 300 includes a first base 310, a first cleaning brush 320, a first reel 330 and a second reel 340. The first base 310 is arranged in the housing 100 and includes a second mounting portion 311 and a first bracket 312. One side of the first bracket 312 is connected to the side of the second mounting portion 311 close to the second plate 192 and extends along the thickness direction of the indoor unit 1000 (the front-to-back direction as shown in Figure 7A). A first cavity 313 (for example, an installation cavity) is defined in the second mounting portion 311, and a portion of the top of the first cavity 313 is open. The first bracket 312 is configured to carry the filter 210. The filter 210 is arranged on the first bracket 312 and can move relative to the first bracket 312.

[0063] A first cleaning brush 320, a first reel 330, and a second reel 340 are rotatably disposed within the first chamber 313. The first cleaning brush 320, the first reel 330, and the second reel 340 each extend along the length of the indoor unit 1000. The first cleaning brush 320 includes a first bristle brush 321 and is configured to remove debris attached to the filter 210. The first cleaning brush 320 is disposed adjacent to the first reel 330. The first reel 330 and the second reel 340 are spaced apart and substantially parallel to each other. 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 periphery of at least one of the first reel 330 and the second reel 340, with the filter 210 being tensioned between the first reel 330 and the second reel 340.

[0064] 10 and 11 , the transmission assembly 500 is disposed in the first base 310 and is connected to the first reel 330 and the second reel 340 . The transmission assembly 500 is connected to the filter screen 210 via the first reel 330 and the second reel 340 .

[0065] The drive assembly 400 is disposed on the housing 100 and includes a drive gear 410. The drive gear 410 is connected to the power output terminal. The power output terminal of the drive assembly 400 is detachably connected to the transmission assembly 500. For example, the drive assembly 400 is a drive motor. The drive assembly 400 can drive the first reel 330 and the second reel 340 to rotate in opposite directions through the transmission assembly 500 to drive the filter 210 to move along a predetermined trajectory. In other words, relative motion occurs between the first cleaning brush 320 and the filter 210, so that different areas of the filter 210 are arranged relative to the first cleaning brush 320.

[0066] For example, the drive assembly 400 drives the first reel 330 and the second reel 340 to rotate through the transmission assembly 500, so that the filter 210 is wound on the first reel 330 and unwound on the second reel 340, or the filter 210 is unwound on the first reel 330 and wound on the second reel 340, so 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 way, the first cleaning brush 320 can clean the area of ​​the filter 210 opposite to it.

[0067] 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 mounted on one end of the first reel 330 and meshes with the drive gear 410. The second driven gear 520 is mounted on one end of the second reel 340 and meshes with the first driven gear 510. The third driven gear 530 is mounted on one end of the first cleaning brush 320 and meshes with the intermediate gear 540. The first driven gear 510 also meshes with the intermediate gear 540.

[0068] During operation of the self-cleaning assembly 300, the drive assembly 400 operates, causing the drive gear 410 on the power output end to rotate in a first direction, thereby driving the first driven gear 510 to rotate in a second direction, thereby driving the first reel 330 to rotate in the second direction. Simultaneously, the first driven gear 510 also drives the second driven gear 520 to rotate in the first direction, thereby driving the second reel 340 to rotate in the first direction.

[0069] In this way, under the action of the first reel 330 and the second reel 340, the filter 210 stretched between the first reel 330 and the second reel 340 moves along a predetermined trajectory, so that different areas on the filter 210 are opposite to the first cleaning brush 320 in turn, and the first cleaning brush 320 cleans the filter 210 in different areas.

[0070] It should be noted that the first direction is opposite to the second direction. When the first reel 330 rotates along the first direction and reels the filter screen 210 , the second reel 340 rotates along the second direction and unreels the filter screen 210 .

[0071] For example, referring to Figures 7A, 7B, and 11, the first driven gear 510 rotates counterclockwise under the drive gear 410, driving the first reel 330 to rotate counterclockwise to reel in the filter screen 210. Then, while rotating counterclockwise, the first driven gear 510 simultaneously drives the second driven gear 520 to rotate clockwise, thereby driving the second reel 340 to rotate clockwise and unwind the filter screen 210.

[0072] It is understood that the first driven gear 510 rotates clockwise under the drive gear 410, driving the first reel 330 to rotate clockwise to unwind the filter screen 210. Then, the first driven gear 510 rotates clockwise while driving the second driven gear 520 to rotate counterclockwise, thereby driving the second reel 340 to rotate counterclockwise and rewind the filter screen 210.

[0073] In addition, the first driven gear 510 also drives the intermediate gear 540 to rotate along the first direction, so that the intermediate gear 540 drives the third driven gear 530 to rotate along the second direction, and then drives the first cleaning brush 320 to rotate along the second direction, so that the rotation direction of the first cleaning brush 320 is opposite to the movement direction of the filter 210, which is beneficial to improve the cleaning effect of the first cleaning brush 320 on the filter 210.

[0074] For example, the first driven gear 510 and the second driven gear 520 have the same number of teeth, so that the rotation speeds of the first reel 330 and the second reel 340 are consistent, so that the filter 210 is stretched on the first reel 330 and the second reel 340 .

[0075] In some embodiments, as shown in Figures 10, 11, and 12, the first base 310 further includes a second cavity 314. One side of the second mounting portion 311 along the length of the indoor unit 1000 is recessed toward the other side to form the second cavity 314. The transmission assembly 500 is disposed within the second 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 respectively disposed within the second cavity 314. Providing the second cavity 314 on the first base 310 facilitates protecting and concealing the first driven gear 510, the second driven gear 520, the intermediate gear 540, and the third driven gear 530, facilitates wiring within the indoor unit 1000, and prevents operating components (such as the intermediate gear 540) from damaging other components (such as the first fan assembly 700).

[0076] In some embodiments, as shown in FIG12 , the bottom side of the second cavity 314 is provided with a first opening 3141, a second opening 3142, and a third opening 3143 that communicate with the first cavity 313. As shown in FIG14 , a first prism 511 is provided in the middle of the first driven gear 510, and a first hole that is adapted to fit the first prism 511 is provided at the end of the first reel 330. The first prism 511 passes through the first opening 3141 and is inserted into the first hole, thereby fixedly connecting the first driven gear 510 to the first reel 330.

[0077] A second prism 521 is provided in the middle of the second driven gear 520. A second hole is provided at the end of the second reel 340 to mate with the second prism 521. The second prism 521 passes through the second opening 3142 and is inserted into the second hole, thereby securely connecting the second driven gear 520 to the second reel 340. A third prism 531 is provided in the middle of the third driven gear 530. A third hole is provided at the end of the first cleaning brush 320 to mate with the third prism 531. The third prism 531 passes through the third opening 3143 and is inserted into the third hole, thereby securely connecting the third driven gear 530 to the first cleaning brush 320.

[0078] 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 are provided in the indoor unit 1000, which is conducive to 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 the rotation.

[0079] In this way, the indoor air enters the housing 100 from the air inlet 110 under the action of the first fan assembly 700, and flows to the indoor heat exchanger 600 after being filtered by the filter 210. The indoor air is blown out from the air outlet after heat exchange in the indoor heat exchanger 600.

[0080] After the indoor unit 1000 has been operating for a period of time, debris in the indoor air, after being filtered by the filter 210, accumulates on the surface of the filter 210, causing a large amount of debris to adhere to the filter 210, thereby affecting the filtering and air intake performance of the filter 210. When a large amount of debris adheres to the filter 210, the self-cleaning assembly 300 of the indoor unit 1000 can remove the debris from the filter 210, allowing the filter 210 to maintain its filtering capacity, thereby improving the cooling or heating efficiency of the indoor unit 1000.

[0081] In some embodiments, as shown in Figures 8A and 8B , the first reel 330 includes a first portion 331 and a second portion 332, which are detachably connected. The second reel 340 includes a third portion 341 and a fourth portion 342, which are detachably connected. One end of the filter screen 210 is clamped between the first portion 331 and the second portion 332, and the other end of the filter screen 210 is clamped between the third portion 341 and the fourth portion 342.

[0082] It should be noted that the first scroll 330 and the second scroll 340 are respectively set as a two-part structure that can be detachably connected, and the two ends of the filter 210 are respectively fixed to the first scroll 330 and the second scroll 340 by clamping, which can improve the stability of the connection between the filter 210 and the first scroll 330 and the second scroll 340, and is conducive to maintaining the tension of the filter between the first scroll 330 and the second scroll 340.

[0083] The first portion 331, the second portion 332, the third portion 341, and the fourth portion 342 extend along the thickness of the indoor unit 1000 (the front-to-back direction as shown in Figures 8A and 8B) and have an arcuate 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 facilitates the winding and unwinding of the filter 210 on the first reel 330 and the second reel 340.

[0084] A first snap-fit ​​portion 333 is provided on the inner side surface of the first portion 331, and a second snap-fit ​​portion 334 is provided on the inner side surface of the second portion 332. The first snap-fit ​​portion 333 and the second snap-fit ​​portion 334 are snap-fitted together, allowing the first portion 331 and the second portion 332 to be detachably connected. A third snap-fit ​​portion 343 is provided on the inner side surface of the third portion 341, and a fourth snap-fit ​​portion 344 is provided on the inner side surface of the fourth portion 342. The third snap-fit ​​portion 343 and the fourth snap-fit ​​portion 344 are snap-fitted together, allowing the third portion 341 and the fourth portion 342 to be detachably connected. In this way, the connection between the first portion 331 and the second portion 332, and between the third portion 341 and the fourth portion 342, is achieved through snap-fitting, making it easier for the user to remove the filter 210 for cleaning.

[0085] In some embodiments, referring to Figures 9, 10, and 15, the indoor unit 1000 includes multiple filter assemblies 200 and multiple self-cleaning assemblies 300. The housing 100 includes multiple air inlets 110. Each filter assembly 200 corresponds to a self-cleaning assembly 300, and each air inlet 110 corresponds to a filter assembly 200.

[0086] It can be understood that the provision of multiple air inlets 110, multiple filter components 200 and multiple self-cleaning components 300 in the indoor unit 1000 is conducive to increasing the air intake and air output of the indoor unit 1000, thereby improving the cooling or heating efficiency of the indoor unit 1000.

[0087] The indoor unit 1000 also includes multiple drive assemblies 400 and multiple transmission assemblies 500, with each drive assembly 400 corresponding to a transmission assembly 500. Each drive assembly 400 is connected to the filter assembly 200 via its corresponding transmission assembly 500. In this way, each filter assembly 200 can be driven independently to perform self-cleaning operations.

[0088] In some embodiments, as shown in Figures 13 and 14, the indoor unit 1000 further includes at least one connecting rod 550. The multiple transmission assemblies 500 are connected by the connecting rod 550, and the power output end of the drive assembly 400 is connected to the connecting rod 550. In this way, the drive assembly 400 can drive the multiple self-cleaning assemblies 300 through the connecting rod 550 and the multiple transmission assemblies 500, which helps to simplify the structure of the indoor unit 1000.

[0089] 12 , the first base 310 further includes a notch 315. For example, a side of the second cavity 314 adjacent to the second plate 192 is open to form the notch 315. A portion of the first driven gear 510 extends from the notch 315, and the driving gear 410 meshes with the portion of the first driven gear 510.

[0090] It will be appreciated that the removable connection between the transmission assembly 500 and the drive assembly 400 is achieved through the meshing between the first driven gear 510 and the drive gear 410. The notch 315 provided on the first base 310 facilitates meshing between the drive gear 410 and the first driven gear 510. When the transmission assembly 500 is disassembled, the first driven gear 510 can be removed from the housing 100 along with the second mounting portion 311, while the drive gear 410 remains.

[0091] That is, since the power output end of the drive assembly 400 is detachably connected to the transmission assembly 500, and the transmission assembly 500 is connected to the self-cleaning assembly 300, and the filter assembly 200 is connected to the self-cleaning assembly 300, when the user needs to remove the filter assembly 200 and the self-cleaning assembly 300 for cleaning, the first base 310 can be removed from the housing 100 to remove the self-cleaning assembly 300 from the housing 100. At the same time, the transmission assembly 500 is removed from the housing 100 together with the self-cleaning assembly 300, while the drive assembly 400 is not removed from the housing 100 along with the transmission assembly 500.

[0092] In this way, the user can disassemble the filter assembly 200 and the self-cleaning assembly 300 without touching the drive assembly 400, and clean the filter assembly 200 and the self-cleaning assembly 300, thereby avoiding safety hazards caused by contact with the drive assembly 400. In addition, the drive assembly 400 is hidden in the housing 100, which helps to protect it from damage by external factors.

[0093] In some embodiments, as shown in Figure 2, the housing 100 further includes a first connecting portion 120 and a first mounting portion 130 (for example, a mounting groove). For example, a portion of the front side of the housing 100 is open to form the first connecting portion 120. A first mounting portion 130 is defined within the housing 100. The front side of the first mounting portion 130 is open. The first connecting portion 120 is communicated with the first mounting portion 130, and the first connecting portion 120 is located above the first mounting portion 130. The second mounting portion 311 is disposed within the first mounting portion 130. The self-cleaning assembly 300 is disposed on the inner side of the second mounting portion 311, and the transmission assembly 500 is disposed on the outer side of the second mounting portion 311. The first bracket 312 is disposed within the housing 100 through the first connecting portion 120.

[0094] Because the first reel 330, the second reel 340, and the first cleaning brush 320 are disposed within the second mounting portion 311, and the second mounting portion 311 is disposed within the first mounting portion 130, one side of the first bracket 312 is connected to the second mounting portion 311 and extends rearward through the first connecting portion 120. Therefore, the user can remove the second mounting portion 311 from the first mounting portion 130 via the first connecting portion 120, thereby removing the first bracket 312 and the filter screen 210 from the housing 100 along with the second mounting portion 311, thereby removing the filter assembly 200 and the self-cleaning assembly 300. This reduces the difficulty of removing and installing the filter assembly 200 and the self-cleaning assembly, making it easier for the user to clean the removed filter assembly 200 and the self-cleaning assembly 300.

[0095] Similarly, the user can install the second mounting portion 311 in the first mounting portion 130 through the first connecting portion 120, so that the first bracket 312 and the filter 210 are installed in the shell 100 together with the second mounting portion 311, thereby installing the filter assembly 200 and the self-cleaning assembly 300.

[0096] In some embodiments, as shown in FIG9 , the indoor unit 1000 further includes a first position-limiting portion 160 (e.g., a position-limiting block). The first position-limiting portion 160 is rotatably mounted on the first plate 191 of the housing 100 and is proximate to the first mounting portion 130. The first position-limiting portion 160 is configured to rotate and switch between a locked position and an unlocked position.

[0097] For example, when the first limiting portion 160 is in the locked position, at least a portion of the first limiting portion 160 is located on the front side of the second mounting portion 311 to prevent the second mounting portion 311 from sliding out of the first mounting portion 130. When the first limiting portion 160 is in the unlocked position, the first limiting portion 160 is located on the first plate 191 of the housing 100 to enable the second mounting portion 311 to slide forward and detach from the first mounting portion 130.

[0098] It should be noted that when the indoor unit 1000 is operating, the first stopper 160 is in the locked position to prevent the second mounting portion 311 from sliding out of the first mounting portion 130. When the filter assembly 200 needs to be cleaned, the first stopper 160 is rotated to the unlocked position to remove the second mounting portion 311.

[0099] For example, the indoor unit 1000 includes a plurality of first position-limiting portions 160. The plurality of first position-limiting portions 160 are provided on the housing 100 to facilitate the user in removing and installing the filter assembly 200.

[0100] In some embodiments, as shown in FIG15 , the self-cleaning assembly 300 further includes a first dust box 350 and a dust box 360. The first dust box 350 is disposed on the first base 310 and below the first cleaning brush 320. The first dust box 350 is configured to collect debris removed from the filter 210.

[0101] As shown in Figures 3 and 9, the indoor unit 1000 also includes a third card slot 150. The third card slot 150 is provided on the first plate 191 of the shell 100. The ash box 360 is provided in the third card slot 150, and the ash box 360 is located below the first dust box 350. The third card slot 150 has a first side wall 151 and a second side wall 152 that are spaced apart along the length direction of the indoor unit 1000 (i.e., the left and right direction in Figure 9). The first side wall 151 is provided with a first card slot 153, and the second side wall 152 is provided with a second card slot 154. As shown in Figure 12, the ash box 360 is provided with a first card block and a second card block that are spaced apart along the length direction of the indoor unit 1000 (i.e., the left and right direction in Figure 9).

[0102] The ash box 360 is detachably installed in the third slot 150 through the cooperation between the first clamping block and the first clamping slot 153 , and the cooperation between the second clamping block and the second clamping slot 154 .

[0103] In some embodiments, as shown in Figures 15 and 16, the self-cleaning assembly 300 further includes a second cleaning brush 370. The second cleaning brush 370 is disposed within the first dust box 350 and is configured to remove debris attached to the first cleaning brush 320 into the first dust box 350. The second cleaning brush 370 includes a second brush 371, which is configured to be inserted into the first cleaning brush 320.

[0104] In some embodiments, the cleaning brushes of the indoor unit 1000 include a first cleaning brush 320 and a second cleaning brush 370 .

[0105] When the self-cleaning component is working, some debris will adhere to the first brush 321. The second brush 371 can brush the debris attached to the first brush 321 into the first dust collection box 350, so that the first brush 321 can contact the filter 210 without being attached to any debris and remove the debris attached to the filter 210, which is beneficial to improving the effect of cleaning the filter 230.

[0106] In some embodiments, as shown in Figures 1 and 4, the indoor unit 1000 further includes a panel 800. The panel 800 is detachably connected to the front side of the housing 100 to block the first connection portion 120. For example, when the indoor unit 1000 is in operation, the panel 800 is placed on the front side of the housing 100 to coordinate the appearance of the indoor unit 100. When it is necessary to remove the cleaning filter assembly 200 and the self-cleaning assembly 300, the panel 800 can be removed from the front side of the housing 100, and then the filter assembly 200 and the self-cleaning assembly 300 can be removed from the housing 100 via the first connection portion 120.

[0107] As shown in Figure 2, a first matching portion is provided on the inner side surface of the panel 800, and a second matching portion 140 is provided on the front side of the shell 100. The first matching portion and the second matching portion 140 are connected by a snap so that the panel 800 can be detachably connected to the front side of the shell 100.

[0108] In some embodiments, as shown in FIG17 , the filter 210 includes a filter portion 211 and a blocking portion 212 connected in sequence. The filter portion 211 is configured to filter the air entering the housing 100 from the air inlet 110, and the blocking portion 212 is configured to block the air entering the housing 100 from the air inlet 110.

[0109] For example, when the filter 210 moves along a predetermined trajectory, the filter 210 can move between a filtering position and a blocking position. When the filter 210 is in the filtering position, the filter portion 211 covers the air inlet 110, filtering the air entering the housing 100 from the air inlet 110. When the filter 210 is in the blocking position, the blocking portion 212 covers the air inlet 110, blocking the air entering the housing 100 from the air inlet 110.

[0110] It should be noted that when the indoor unit 1000 is operating, the filter 210 is in the filtering position, the filter portion 211 covers the air inlet 110, and filters the air entering from the air inlet 110. When the indoor unit is stopped, the filter 210 moves from the filtering position to the blocking position, and the blocking portion 212 covers the air inlet 110, so that air and dust are blocked by the blocking portion 212, preventing dust from entering the interior of the housing 100.

[0111] It is understood that the filter portion 211 is a region having multiple small pores. These pores can filter large particles of dust and other impurities from the air, allowing the filtered air to enter the housing 100. The blocking portion 212 is a non-porous region that prevents air and dust from passing through. For example, the blocking portion 212 is made of a plastic film, and a hot-melt portion is provided between the blocking portion 212 and the filter portion 211 to connect the two portions.

[0112] In this way, by providing a sealing portion 212 in the filter 210, air and dust cannot enter the shell 100 when the indoor unit 1000 is shut down, thereby preventing dust and other debris from entering the interior of the shell 100, and preventing dust and other debris from adhering to the indoor heat exchanger 600 or the first fan assembly 700 in the shell 100, making the interior of the indoor unit 1000 cleaner, which is beneficial to improving the cooling or heating effect of the indoor unit 1000.

[0113] In some embodiments, the indoor unit 1000 further includes a sensor and a controller. The sensor is configured to send a signal to the controller indicating that a self-cleaning mode is in effect. For example, the signal instructs the indoor unit 1000 to activate or deactivate the self-cleaning mode. When the amount of debris on the filter 210 reaches a preset level, the sensor sends a signal to the controller indicating that the self-cleaning mode is in effect. When the amount of debris on the filter 210 falls below a preset level, the sensor sends a signal to the controller indicating that the self-cleaning mode is in effect.

[0114] The controller is configured to receive a signal from the sensor and, in response to the signal, control the indoor unit 1000 to perform an operation indicated by the signal. For example, upon receiving a signal from the sensor indicating that the self-cleaning mode is to be executed, the controller controls the indoor unit 1000 to execute the self-cleaning mode. Upon receiving a signal from the sensor indicating that the self-cleaning mode is to be stopped, the controller controls the indoor unit 1000 to stop the self-cleaning mode.

[0115] For example, after the indoor unit 1000 has been operating for a period of time, indoor air continuously flows from the air inlet 110 to the indoor heat exchanger 600 under the action of the first fan assembly 700. After heat exchange in the indoor heat exchanger 600, it is delivered to the indoor room through the air outlet by the first fan assembly 700. As a result, the amount of debris attached to the filter 210 opposite the air inlet 110 in the indoor unit 1000 increases. When the amount of debris on the filter 210 reaches a predetermined level, the sensor sends a signal to the controller indicating that the self-cleaning mode is in effect.

[0116] The controller receives a signal from the sensor indicating the start of the self-cleaning mode and controls the indoor unit 1000 to operate in the self-cleaning mode. When in the self-cleaning mode, the drive assembly 400 drives the first and second reels 330 and 340 in opposite directions via the transmission assembly 500, thereby driving the filter 210 along a predetermined trajectory. The first cleaning brush 320 can be positioned opposite different areas of the filter 210 and clean the area of ​​the filter 210 opposite to the first cleaning brush 320.

[0117] When the first reel 330 and the second reel 340 rotate in opposite directions, the first cleaning brush 320 contacts the first reel 330 to remove debris from the filter 210 wound on the first reel 330, causing the debris to fall into the first dust box 350 for collection. If there is a lot of debris in the first dust box 350, the first dust box 350 can be removed for cleaning.

[0118] Some embodiments of the present disclosure provide another indoor unit 100A. As shown in FIG19 , the indoor unit 100A includes a housing 100 , an indoor heat exchanger 20 , a second fan assembly 30 , at least one filter 210 , at least one self-cleaning assembly 300 , at least one drive assembly 400 , and at least one transmission assembly 500 .

[0119] As shown in Figures 20 and 21, the housing 100 includes a fifth plate 12, a sixth plate 13, a seventh plate 14, and an eighth plate 15. The fifth plate 12 is the side plate facing away from the wall when the indoor unit is mounted on a room wall. The sixth plate 13 is the side plate facing closer to the wall when the indoor unit is mounted on a room wall. The seventh plate 14 and the eighth plate 15 connect the fifth plate 12 and the sixth plate 13, respectively, and extend perpendicularly to the fifth plate 12 and the sixth plate 13, respectively.

[0120] For example, the seventh plate 14 is a side plate on one side in the longitudinal direction of the housing 100 (i.e., the left-right direction as shown in FIG. 20 ), and the eighth plate 15 is a side plate on the other side in the longitudinal direction of the housing 100. For example, the seventh plate 14 is a side plate on the left side of the indoor unit 100A, and the eighth plate 15 is a side plate on the right side of the indoor unit 100A.

[0121] The housing 100 includes at least one air inlet 110 and an air outlet. A portion of the top of the housing 100 is open to form the air inlet 110. For example, as shown in FIG20 , the housing 100 includes two air inlets 110, each disposed at the top of the housing 100 and spaced apart along the length of the housing 100.

[0122] A portion of the bottom of the housing 100 is open to form the air outlet. The indoor heat exchanger 20 is disposed within the housing 100 and is configured to exchange heat with the indoor air entering through the air inlet 110. The second fan assembly 30 is disposed on a side of the indoor heat exchanger 20 away from the air inlet 110 and is configured to inhale and pump out the indoor air. For example, when the second fan assembly 30 is in operation, the fan rotates, inhaling indoor air from the air inlet 110, causing the indoor air to exchange heat with the indoor heat exchanger 20, and then pumping the indoor air that has undergone heat exchange with the indoor heat exchanger 20 out of the air outlet.

[0123] It is understood that indoor air enters the housing 100 through the air inlet 110 under the action of the second fan assembly 30, and enters the indoor heat exchanger 20 for heat exchange after being filtered by the filter 210. For example, when the indoor unit 100A is cooling, the indoor air is converted into cold air after heat exchange with the indoor heat exchanger 20 and blown into the room through the air outlet.

[0124] It should be noted that the second fan assembly 30 can guide indoor air from the air inlet 110 to the indoor heat exchanger 20, increase the air intake volume entering the indoor heat exchanger 20 from the air inlet 110, and the second fan assembly 30 can adjust the air intake volume entering the indoor heat exchanger 20.

[0125] The filter 210 is disposed between the air inlet 110 and the indoor heat exchanger 20 and covers the air inlet 110. The filter 210 is configured to filter air entering the indoor unit 100A from the air inlet 110 to prevent foreign matter in the air from entering the indoor unit 100A.

[0126] For example, when the indoor unit 100A is in operation, indoor air entering the housing 100 through the air inlet 110 first passes through the filter 210 and then enters the indoor heat exchanger 20 after being filtered by the filter 210. This prevents foreign matter from entering the indoor heat exchanger 20 and accumulating on the indoor heat exchanger 20, thereby preventing the foreign matter from clogging and reducing the heat exchange efficiency of the indoor heat exchanger 20. After heat exchange in the indoor heat exchanger 20, the indoor air is blown out of the air outlet by the second fan assembly 30.

[0127] The self-cleaning assembly 300 is disposed within the housing 100 and is configured to clean debris attached to the filter 210. The drive assembly 400 is disposed on the housing 100, and the transmission assembly 500 is disposed within the housing 100. The drive assembly 400 is configured to drive the transmission assembly 500 to rotate. The transmission assembly 500 is respectively connected to the self-cleaning assembly 300 and the drive assembly 400, and is configured to drive the self-cleaning assembly 300 to move under the drive of the drive assembly 400, so that the self-cleaning assembly 300 cleans debris attached to the filter 210, thereby maintaining the cooling or heating efficiency of the indoor unit 100A.

[0128] In some embodiments, as shown in Figure 31, the self-cleaning assembly 300 includes a second base 51, a fourth reel 53, a third reel 52, a cleaning brush assembly 54 and a second dust box 55. The second base 51 is arranged in the housing 100 and is close to the fifth plate 12. The second base 51 includes a base body 511A and a second bracket 512. One side of the second bracket 512 is connected to a side of the base body 511A close to the sixth plate 13 and extends along the thickness direction of the housing 100 (i.e., the front and rear direction as shown in Figure 20). The second bracket 512 is configured to carry the filter 210. The filter 210 is arranged on the second bracket 512 and can move along a predetermined trajectory on the second bracket 512.

[0129] The fourth reel 53, the third reel 52, and the cleaning brush assembly 54 are rotatably connected to the base body 511A, and the fourth reel 53, the third reel 52, and the cleaning brush assembly 54 each extend along the length of the housing 100. The fourth reel 53 is spaced apart from and substantially parallel to the third reel 52. One end of the filter screen 210 is connected to the fourth reel 53, and the other end is connected to the third reel 52. The filter screen 210 is wound around the outer circumference of at least one of the fourth reel 53 and the third reel 52, and the filter screen 210 is tensioned between the fourth reel 53 and the third reel 52. The cleaning brush assembly 54 is disposed near the third reel 52 and is configured to clean debris from the filter screen 210 while the third reel 52 is reeling or unreeling the filter screen 210.

[0130] The self-cleaning assembly 300 also includes a cleaning chamber 56. The cleaning chamber 56 is defined within the base body 511A. The cleaning chamber 56 includes a fourth opening 563 and a fifth opening 564. The top of the cleaning chamber 56 is open to form the fourth opening 563, and the bottom of the cleaning chamber 56 is open to form the fifth opening 564. The fourth reel 53 is located above the fourth opening 563, the third reel 52 is located at the fourth opening 563, and the cleaning brush assembly 54 is located in the cleaning chamber 56. The second dust box 55 is disposed below the fifth opening 564 and is configured to accommodate debris cleaned from the filter 210 by the cleaning brush assembly 54.

[0131] In some embodiments, the fourth reel 53 and the third reel 52 rotate in opposite directions. During the cleaning process of the self-cleaning assembly 300, the filter 210 is wound on the third reel 52 and unwound on the fourth reel 53, or the filter 210 is unwound on the third reel 52 and wound on the fourth reel 53. At least a portion of the cleaning brush assembly 54 is in contact with the filter 210, and as the filter 210 is wound and unwound, the cleaning brush assembly 54 and the filter 210 generate relative motion. The cleaning brush assembly 54 can be arranged relative to different areas of the filter 210 and can clean different areas of the filter 210. The debris on the filter 210 is cleaned into the second dust box 55 by the cleaning brush assembly 54.

[0132] In some embodiments, as shown in FIG25 , the cleaning brush assembly 54 includes a cleaning brush base 541, a third cleaning brush 542, and at least one elastic member 543. The third cleaning brush 542 is disposed on the cleaning brush base 541. The cleaning brush base 541 includes a third mounting portion 5411 and a fourth mounting portion 5412. The third mounting portion 5411 is disposed on and connected to the fourth mounting portion 5412. One end of any of the at least one elastic member 543 abuts the third mounting portion 5411, and the other end abuts the fourth mounting portion 5412.

[0133] For example, the elastic member 543 is a spring. The third cleaning brush 542 is disposed on a side of the third mounting portion 5411 away from the fourth mounting portion 5412. When the third cleaning brush 542 abuts the third reel 52, the third reel 52 applies a force to the third cleaning brush 542, thereby applying a force to the third mounting portion 5411, causing the third mounting portion 5411 to compress the elastic member 543.

[0134] In some embodiments, the cleaning brush of the indoor unit 100A includes a third cleaning brush 542 .

[0135] Because the fourth mounting portion 5412 is stationary along the height direction of the housing 100 (i.e., the vertical direction as shown in FIG20 ), the elastic member 543 applies an elastic force of equal magnitude and opposite direction to the third mounting portion 5411, causing the third cleaning brush 542 to apply force to the third reel 52, thereby elastically abutting the third cleaning brush 542 against the third reel 52. The cleaning brush base 541, through the elastic member 543, abuts the third cleaning brush 542 against the third reel 52. This facilitates ensuring that the third cleaning brush 542 always abuts the third reel 52 during rotation of the third reel 52 or the cleaning brush base 541, thereby improving the cleaning ability of the third cleaning brush 542 on the filter 210 wound on the third reel 52. Furthermore, this prevents excessive wear of the third cleaning brush 542 due to hard contact between the third reel 52 and the third cleaning brush 542, thereby extending the service life of the third cleaning brush 542.

[0136] It is understood that the third cleaning brush 542 is in contact with the third reel 52 via the elastic member 543. When the fourth reel 53 and the third reel 52 rotate in opposite directions, the third cleaning brush 542 can contact the third reel 52 and clean the filter 210 that has moved to the contact position, causing debris brushed off the filter 210 to fall into the second dust collection box 55 for collection. Since the third reel 52 may generate vibration or radial runout during rotation, the elasticity of the elastic member 543 helps to improve the stability of the contact between the third cleaning brush 542 and the third reel 52, thereby avoiding hard contact between the third reel 52 and the third cleaning brush 542.

[0137] For example, after the indoor unit 100A has been operating for a period of time, indoor air continuously enters the indoor heat exchanger 20 under the action of the second fan assembly 30, is heated by the indoor heat exchanger 20, and is then delivered indoors. After the indoor air entering the indoor heat exchanger 20 is filtered by the filter 210, impurities in the indoor air may accumulate on the surface of the filter 210, increasing the amount of impurities attached to the filter 210 and affecting the filtering and air intake performance of the filter 210.

[0138] When a large amount of debris adheres to the filter 210, the indoor unit 100A can operate in a self-cleaning mode to remove debris from the filter 210, maintaining the filter 210's filtration capacity and improving the cooling or heating efficiency of the indoor unit 100A. When the indoor unit 100A operates in self-cleaning mode, the fourth reel 53 and the third reel 52 rotate, causing the filter 210 to reel on the fourth reel 53 and unreel on the third reel 52, or alternatively, the filter 210 unreel on the fourth reel 53 and reel on the third reel 52. The fourth reel 53 and the third reel 52 cause the filter 210 to move relative to the third cleaning brush 542, causing the third cleaning brush 542 to be positioned opposite different areas of the filter 210 and clean those areas.

[0139] In some embodiments, as shown in Figures 21 and 26, the second dust box 55 includes a dust box body 551 and a fourth hole 553. The fourth hole 553 is provided at one end of the dust box body 551 along the length direction of the housing 100. The housing 100 further includes a positioning member provided on a side panel of the housing 100 along the length direction. The second dust box 55 is engaged with the housing 100 through the fourth hole 553 and the positioning member to achieve a detachable connection between the second dust box 55 and the housing 100. When it is necessary to clean the debris in the second dust box 55, the second dust box 55 can be removed from the housing 100 through the fourth hole 553 and the positioning member to clean the debris in the second dust box 55.

[0140] As shown in FIG26 , the second dust box 55 further includes a baffle 552. The baffle 552 is disposed on the front side of the dust box body 551. One end of the baffle 552 is connected to the dust box body 551, and the other end of the baffle 552 extends upward in the height direction of the housing 100 (i.e., the vertical direction as shown in FIG20 ). The baffle 552 is configured to seal the gap between the front side of the second dust box 55 and the front surface of the second base 51 when the second dust box 55 is assembled with the second base 51, thereby preventing debris in the second dust box 55 from overflowing from the gap.

[0141] In some embodiments, as shown in FIG25 , the cleaning brush assembly 54 further includes a third cavity 544. The side of the fourth mounting portion 5412 facing the third cleaning brush 542 is open, and the third mounting portion 5411 is disposed on the open side of the second mounting portion 5412. The third mounting portion 5411 and the fourth mounting portion 5412 together define a third cavity 544. The elastic member 543 is disposed within the third cavity 544. Because the two ends of the elastic member 543 respectively abut against the third mounting portion 5411 and the fourth mounting portion 5412, when the third mounting portion 5411 is squeezed, the third mounting portion 5411 can move toward the fourth mounting portion 5412. Thus, providing the third cavity 544 in the cleaning brush assembly 54 facilitates the installation of the elastic member 543 and prevents the elastic member 543 from falling out of the cleaning brush base 541.

[0142] In some embodiments, as shown in FIG25 , the cleaning brush assembly 54 further includes at least one positioning post 545 . Any one of the at least one positioning post 545 is disposed on either the third mounting portion 5411 or the fourth mounting portion 5412 . The elastic member 543 is sleeved on any one of the positioning posts 545 .

[0143] Taking the example of a cleaning brush assembly 54 comprising two positioning posts 545 and two elastic members 543, with the two positioning posts 545 disposed on the fourth mounting portion 5412, the two positioning posts 545 are disposed at either end of the fourth mounting portion 5412 along the length of the housing 100. The elastic members 543 are respectively sleeved onto the positioning posts 545. Thus, providing the positioning posts 545 in the cleaning brush assembly 54 facilitates the positioning and installation of the elastic members 543, allowing the elastic members 543 to move along the height direction of the housing 100, thereby causing the third mounting portion 5411 to drive the third cleaning brush 542 to move relative to the fourth mounting portion 5412.

[0144] In some embodiments, as shown in FIG25 , the cleaning brush base 541 further includes at least one fourth latching slot 5414 and at least one fifth latching portion 5415. The at least one fourth latching slot 5414 is disposed on at least one of the two side walls of the third mounting portion 5411 along the width direction of the housing 100. The at least one fifth latching portion 5415 is disposed on at least one of the two side walls of the fourth mounting portion 5412 along the width direction of the housing 100. The fifth latching portion 5415 and the fourth latching slot 5414 engage with each other to connect the third mounting portion 5411 to the fourth mounting portion 5412. When the fifth latching portion 5415 is engaged in the fourth latching slot 5414, the fifth latching portion 5415 can move within the fourth latching slot 5414 along the height direction of the housing 100.

[0145] For example, when at least one third mounting portion 5411 includes a plurality of fourth latching slots 5414, the plurality of fourth latching slots 5414 are spaced apart on both side walls of the third mounting portion 5411 along the width direction of the housing 100. Corresponding to the plurality of fourth latching slots 5414, a plurality of fifth latching portions 5415 are provided on both side walls of the fourth mounting portion 5412 along the width direction of the housing 100, and the plurality of fifth latching portions 5415 are spaced apart along the length direction of the housing 100.

[0146] When the third mounting portion 5411 is engaged with the fourth mounting portion 5412 , the plurality of fourth slots 5414 are engaged with the plurality of fifth buckle portions 5415 to achieve the installation of the third mounting portion 5411 and the fourth mounting portion 5412 .

[0147] For example, the length of the fourth slot 5414 along the height direction of the shell 100 is greater than the length of the fifth buckle portion 5415 along the height direction of the shell 100, so that the third mounting portion 5411 can move relative to the fourth mounting portion 5412 along the height direction of the shell 100.

[0148] It is understood that when the third cleaning brush 542 abuts the third reel 52, the third mounting portion 5411 moves toward the fourth mounting portion 5412. When the third cleaning brush 542 separates from the third reel 52, the third mounting portion 5411 moves away from the fourth mounting portion 5412. Thus, the third mounting portion 5411 and the fourth mounting portion 5412 are engaged and connected via the fourth slot 5414 and the fifth latch portion 5415, which improves assembly efficiency between the third mounting portion 5411 and the fourth mounting portion 5412, simplifies the structure of the cleaning brush base 541, and enhances assembly stability between the third mounting portion 5411 and the fourth mounting portion 5412.

[0149] Moreover, when the fifth snap-fit ​​portion 5415 is snapped into the fourth slot 5414, the fifth snap-fit ​​portion 5415 can move relative to the fourth slot 5414, which is conducive to the movement of the third mounting portion 5411 relative to the fourth mounting portion 5412, so that the third cleaning brush 542 abuts against the third reel 52, thereby improving the efficiency of the third cleaning brush 542 in cleaning the filter 210.

[0150] In some embodiments, as shown in Figures 24 to 26, the third mounting portion 5411 includes a first side portion 5416, a second side portion 5417, and a second connecting portion 5413. The second connecting portion 5413 has two ends along the thickness direction of the housing 100 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 fourth mounting portion 5412 along the height direction of the housing 100. The first side portion 5416, the second side portion 5417, and the second connecting portion 5413 collectively constitute the third mounting portion 5411.

[0151] The first side portion 5416 and the second side portion 5417 extend toward the fourth mounting portion 5412. One end of the elastic member 543 abuts the second connecting portion 5413, and the other end of the elastic member 543 is sleeved on the positioning post 545 provided on the fourth mounting portion 5412. The first side portion 5416 and the second side portion 5417 are connected to the fourth mounting portion 5412 through the engagement of the fourth slot 5414 and the fifth snap portion 5415. When the third mounting portion 5411 and the fourth mounting portion 5412 are assembled, the first side portion 5416 and the second side portion 5417 are located outside the two side walls of the fourth mounting portion 5412 along the thickness direction of the housing 100, thereby limiting the fourth mounting portion 5412 and preventing the elastic member 543 from falling out.

[0152] A first side portion 5416, a second side portion 5417 and a second connecting portion 5413 are provided in the cleaning brush base 541 to constitute a third mounting portion 5411, so that the third mounting portion 5411 has good structural strength, which is conducive to the installation of the third mounting portion 5411 and the third cleaning brush 542, making the installation of the third cleaning brush 542 more secure and preventing the third cleaning brush 542 from falling off from the cleaning brush base 541.

[0153] In some embodiments, as shown in Figures 25 and 26, the self-cleaning assembly 300 further includes a mounting groove 57. The mounting groove 57 is provided on a side of the second connecting portion 5413 away from the fourth mounting portion 5412. The third 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 third cleaning brush 542 on the side close to the third reel 52 and is arc-shaped, so that when the third cleaning brush 542 abuts against the third reel 52, it can clean the filter 210 and allow debris generated by cleaning to fall from the surface of the third cleaning brush 542 into the cleaning chamber 56. In this way, providing the mounting groove 57 in the self-cleaning assembly 300 facilitates the installation of the third cleaning brush 542, improves the stability of the installation of the third cleaning brush 542, and increases the position limiting effect of the third mounting portion 5411 on the cleaning brush 542.

[0154] In some embodiments, as shown in Figures 23, 26, and 27, the self-cleaning assembly 300 is connected to two transmission assemblies 500. The drive assembly 400 is connected to either of the two transmission assemblies 500. The two transmission assemblies 500 are respectively arranged at both ends of the self-cleaning assembly 300 along the length direction of the housing 100. The drive assembly 400 is arranged at one end of the housing 100 along the length direction of the housing 100.

[0155] The transmission assembly 500 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 500, the two first gears 71 are respectively disposed at both ends of the fourth reel 53, the two second gears 72 are respectively disposed at both ends of the third reel 52, and the two third gears 73 are respectively disposed at both ends of the cleaning brush base 541.

[0156] The drive assembly 400 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 is configured to drive the rotation of either the first gear 71 or the second gear 72. The second drive motor 62 is connected to the third gear 73 and is configured to drive the third gear 73 to rotate.

[0157] Taking the connection between the first drive motor 61 and the second gear 72 as an example, when the self-cleaning assembly 300 is in self-cleaning mode, the first drive motor 61 drives the second gear 72 to rotate in the first direction, thereby driving the third reel 52 to rotate in the first direction. Simultaneously, the second gear 72 also drives the first gear 71 to rotate in the second direction, thereby driving the fourth reel 53 to rotate in the second direction. The second drive motor 62 drives the third gear 73 to rotate, thereby driving the cleaning brush base 541 to rotate.

[0158] It should be noted that the first direction is opposite to the second direction. When the fourth reel 53 rotates along the second direction and unwinds the filter screen 210 , the third reel 52 rotates along the first direction and rewinds the filter screen 210 .

[0159] In this way, under the action of the fourth reel 53 and the third reel 52, the filter 210 tensioned between the fourth reel 53 and the third reel 52 moves along a predetermined trajectory, so that the third cleaning brush 542 and the filter 210 move relative to each other, so that the third cleaning brush 542 can clean the filter 210.

[0160] It is understood that both ends of the fourth reel 53 are connected to the first gear 71, and the fourth reel 53 is rotationally connected to the second base 51 via the first gear 71. Both ends of the third reel 52 are connected to the second gear 72, and the third reel 52 is rotationally connected to the second base 51 via the second gear 72. Both ends of the cleaning brush base 541 are connected to the third gear 73, and the cleaning brush base 541 is rotationally connected to the second base 51 via the third gear 73.

[0161] In some embodiments, as shown in Figures 22 to 26, the indoor unit 100A includes two self-cleaning assemblies 300, two drive assemblies 400, and four transmission assemblies 500. One self-cleaning assembly 300, one drive assembly 400, and two transmission assemblies 500 constitute a self-cleaning device, that is, the indoor unit 100A includes two self-cleaning devices. The two self-cleaning assemblies 300 are spaced apart along the length of the housing 100.

[0162] Taking one of the self-cleaning devices as an example, the self-cleaning assembly 300 is connected to two transmission assemblies 500, and the two transmission assemblies 500 are respectively arranged at both ends of the self-cleaning assembly 300. The drive assembly 400 is connected to the transmission assembly 500 near the side wall of the housing 100. The drive assembly 400 drives the transmission assembly 500 to rotate, thereby driving the self-cleaning assembly 300 to rotate.

[0163] Since the transmission assemblies 500 are respectively provided at both ends of the two self-cleaning assemblies 300, it is not necessary to distinguish between left and right when installing the self-cleaning assemblies 300 and the housing 100, which is beneficial to improving the installation efficiency of the self-cleaning assemblies 300.

[0164] In some embodiments, as shown in Figure 27, the drive assembly 400 further includes a housing portion 63 and a bending portion 64. The housing portion 63 is connected to the housing 100. The bending portion 64 is arranged on one side of the housing portion 63 along the width direction of the housing 100, and the free end of the bending portion 64 extends toward the second base 51 along the length direction of the housing 100. The bending portion 64, the housing portion 63 and the second base 51 define a accommodating space, and the first drive motor 61 and the second drive motor 62 are arranged in the accommodating space. In this way, it is helpful to reduce the entry of moisture or dust in the air into the accommodating space, thereby avoiding damage to the first drive motor 61 and the second drive motor 62, and extending the service life of the drive assembly 400.

[0165] In some embodiments, as shown in Figures 26 and 27, the second base 51 also includes two end covers 514 and a connecting plate 516. The two end covers 514 are respectively arranged at both ends of the second base 51 along the length direction of the shell 100. The connecting plate 516 connects the two end covers 514 and is located on the side of the two end covers away from the sixth plate 13. The connecting plate 516 includes a gripping portion 5161, which is arranged on the top of the connecting plate 516. As shown in Figure 28, the gripping portion 5161 includes a plurality of grooves, which are recessed toward the second dust box 55 along the height direction of the shell 100. The plurality of grooves are continuously arranged on the connecting plate 516 along the length direction of the shell 100. In this way, it is convenient for the user to grip the self-cleaning assembly 300 when disassembling and assembling the self-cleaning assembly 300, thereby improving the assembly efficiency of the self-cleaning assembly 300.

[0166] In some embodiments, as shown in Figures 26 and 27, the second base 51 further includes a base front cover 513. The base front cover 513 is disposed on the front side of the housing 100 and below the connecting plate 516. The lower end of the base front cover 513 is detachably connected to the base body 511A. The upper end of the base front cover 513 is rotatably connected to the base body 511A.

[0167] The base front cover 513 is configured to open or close the front side of the cleaning chamber 56. This facilitates cleaning of the third cleaning brush 542 in the cleaning chamber 56, improves the working efficiency of the third cleaning brush 542, and allows maintenance of the components inside the self-cleaning assembly 300 through the base front cover 513 when a component inside the self-cleaning assembly 300 fails. It also facilitates installation and removal of components inside the self-cleaning assembly 300 (such as the fourth reel 53, the third reel 52, and the third cleaning brush 542).

[0168] For example, as the self-cleaning assembly 300 works for a long time, the ability of the cleaning brush 542 to remove debris on the filter screen 210 is reduced. When the third cleaning brush 542 needs to be cleaned, the third cleaning brush 542 in the cleaning chamber 56 can be cleaned by opening the base front cover 513.

[0169] In some embodiments, as shown in FIG26 , the base front cover 513 includes a rotating shaft 5131. The rotating shaft 5131 is disposed at both ends of the base front cover 513 along the length of the housing 100. The base body 511A also includes a rotating shaft hole disposed on the base body 511A. The rotating shaft 5131 engages with the rotating shaft hole to achieve a rotational connection between the base front cover 513 and the base body 511A. Thus, when the base front cover 513 is opened, the lower side of the base front cover 513 flips upward to open the front side of the cleaning chamber 56.

[0170] In some embodiments, as shown in Figures 25 and 26, the cleaning brush assembly 54 further includes at least one second position-limiting portion 546. The at least one second position-limiting portion 546 is disposed at one end of the cleaning brush base 541 along the length direction of the housing 100. For example, the at least one second position-limiting portion 546 includes one second position-limiting portion 546 disposed at one end of the fourth mounting portion 5412 along the length direction of the housing 100. For example, the at least one second position-limiting portion 546 includes two second position-limiting portions 546, the two second position-limiting portions 546 being disposed at both ends of the fourth mounting portion 5412 along the length direction of the housing 100.

[0171] As shown in FIG28 , the cleaning brush assembly 54 further includes a stopper 547 . The stopper 547 is disposed on the inner wall of the cleaning chamber 56 .

[0172] The second limiting portion 546 is configured to abut against the stop portion 547 to limit the rotation angle of the cleaning brush assembly 54. When the cleaning brush assembly 54 is in operation and the second limiting portion 546 abuts against the stop portion 547, the third cleaning brush 542 abuts against the third reel 52 and cleans debris from the filter 210 at the abutment point. The second limiting portion 546 and the stop portion 547 in the cleaning brush assembly 54 facilitate limiting the rotation angle of the cleaning brush assembly 54. This allows the third cleaning brush 542, under the action of the third cleaning brush base 541, to precisely abut against the third reel 52, effectively cleaning the filter 210 and reducing the possibility of the third cleaning brush 542 shifting when abutting against the filter 210.

[0173] For example, at least one second limiting portion 546 includes a first limiting protrusion 5461 and a second limiting protrusion 5462. The first limiting protrusion 5461 and the second limiting protrusion 5462 are arranged at the ends of the fourth mounting portion 5412 along the length direction of the housing 100 and are symmetrically arranged along the radial direction of the fourth mounting portion 5412.

[0174] The second limiting portion 546 is configured to rotate to a first position so that the first limiting protrusion 5461 abuts against the stop portion 547, thereby causing the third cleaning brush 542 to not contact the third reel 52, and the second limiting portion 546 is rotated to a second position so that the second limiting protrusion 5462 abuts against the stop portion 547, thereby causing the third cleaning brush 542 to abut against the third reel 52.

[0175] For example, when the cleaning brush assembly 54 rotates in a clockwise direction and the second limiting portion 546 rotates to the first position, the first limiting protrusion 5461 abuts against the stop portion 547, and the stop portion 547 limits the second limiting portion 546 to continue rotating. The third cleaning brush 542 does not contact the third reel 52, and the first limiting protrusion 5461 is located below the second limiting protrusion 5462. The third cleaning brush 542 is located below the central axis of the cleaning brush base 541.

[0176] When the cleaning brush assembly 54 rotates counterclockwise and the second limiting portion 546 rotates to the second position, the second limiting protrusion 5462 abuts against the stop portion 547, and the stop portion 547 limits the second limiting portion 546 to continue rotating. The third cleaning brush 542 abuts against the third reel 52 and cleans the debris on the filter 210 at the abutment point.

[0177] The abutment between the second limiting protrusion 5462 and the stop portion 547 causes the third cleaning brush 542 to abut against the third reel 52, which helps to prevent the third cleaning brush 542 from being misaligned with the filter 210 due to inertia, thereby reducing the cleaning effect of the third cleaning brush 542.

[0178] In some embodiments, as shown in FIG28 , the stopper 547 includes a first stopper surface 5471 and a second stopper surface 5472. When the second stopper 546 rotates to the first position, the first stopper protrusion 5461 abuts the first stopper surface 5471, and the third cleaning brush 542 is not in contact with the third reel 52. When the second stopper 546 rotates to the second position, the second stopper protrusion 5462 abuts the second stopper surface 5472, and the third cleaning brush 542 abuts the third reel 52, thereby brushing away debris on the filter 210.

[0179] One end of the first stop surface 5471 is connected to one end of the second stop surface 5472, and the first stop surface 5471 is located below the second stop surface 5472. The other end of the first stop surface 5471 extends along the thickness direction of the housing 100 toward the direction close to the sixth plate 13 and extends at an angle downward. The other end of the second stop surface 5472 extends along the thickness direction of the housing 100 toward the direction close to the sixth plate 13 and extends at an angle upward.

[0180] For example, when the cleaning brush base 541 rotates clockwise and the second limiting portion 546 rotates to the first position, the first limiting protrusion 5461 abuts against the first stop surface 5471. The first stop surface 5471 limits the first limiting protrusion 5461 from continuing to rotate, the third cleaning brush 542 does not contact the third reel 52, the first limiting protrusion 5461 is located below the second limiting protrusion 5462, and the third cleaning brush 542 is located below the central axis of the cleaning brush base 541.

[0181] As the cleaning brush base 541 rotates counterclockwise and the second limiting portion 546 rotates from the first position to the second position, the first limiting protrusion 5461 separates from the abutment with the first stop surface 5471, and then the second limiting protrusion 5462 abuts against the second stop surface 5472, so that the third cleaning brush 542 abuts against the third reel 52 to clean the filter 210.

[0182] In this way, the first stop surface 5471 and the second stop surface 5472 are set in the stop part 547, which is conducive to the abutment between the first limiting protrusion 5461 and the second limiting protrusion 5462 and the stop part 547, improves the stability and reliability of the abutment between the second limiting part 546 and the stop part 547, and reduces the rotation error of the cleaning brush assembly 54.

[0183] In some embodiments, as shown in Figures 24, 26, and 27, the self-cleaning assembly 300 further includes a cleaning member 59. The cleaning member 59 is disposed on a side of the base front cover 513 near the cleaning chamber 56. For example, the cleaning member 59 and the base front cover 513 can be connected by an adhesive or a snap-fit ​​structure. The cleaning member 59 is disposed on the side wall of the cleaning chamber 56 opposite the stopper 547. When the second limiting portion 546 rotates back and forth between the first position and the second position, the cleaning member 59 is configured to clean debris on the third cleaning brush 542.

[0184] For example, the stopper 547 is disposed on the rear wall of the cleaning chamber 56, and the cleaning member 59 is disposed on the front wall of the cleaning chamber 56. When a large amount of debris is present on the filter screen 210 and the filter screen 210 needs to be cleaned, the third cleaning brush 542 abuts against the third reel 52 during the rotation of the second stopper 546 from the first position to the second position to clean the filter screen 210. During the rotation of the second stopper 546 from the first position to the second position, the cleaning member 59 can contact the third cleaning brush 542 to remove debris from the third cleaning brush 542, thereby keeping the third cleaning brush 542 in a relatively clean state.

[0185] In this way, when the second limiting protrusion 5462 abuts against the stop portion 547 again, the third cleaning brush 542 cleaned by the cleaning member 59 can better clean the debris on the filter 210, thereby improving the cleaning effect of the cleaning brush assembly 54 on the filter 210.

[0186] In some embodiments, as shown in Figures 24 and 26, the base front cover 513 further includes an escape section 5132 and an extension section 5133. The escape section 5132 is located between the two end covers 514 and protrudes in a direction away from the central axis of the third cleaning brush 542. The rotating shaft 5131 is connected to the side of the escape section 5132 away from the third cleaning brush 542. The extension section 5133 extends along the height direction of the housing 100. The upper end of the extension section 5133 is connected to the lower end of the escape section 5132, and the lower end of the extension section 5133 is engaged with the second dust collection box 55.

[0187] The base front cover 513 is part of the cleaning chamber 56 and is configured to seal the cleaning chamber 56 from the front side. The avoidance section 5132 is located above the extension section 5133 and is opposite the third cleaning brush 542 in the thickness direction of the housing 100. The rotating shaft 5131 is disposed on the side of the avoidance section 5132 away from the third cleaning brush 542. When the base front cover 513 is engaged with the base body 511A, the end of the extension section 5133 away from the avoidance section 5132 along the height direction of the housing 100 engages with the upper portion of the second dust box 55. In other words, when the second dust box 55 is assembled with the base body 511A, the upper portion of the second dust box 55 engages with the base front cover 513, thereby sealing the cleaning chamber 56 from the front and lower sides of the base body 511A.

[0188] For example, as shown in FIG24 , the avoidance section 5132 is formed into an arc that bulges away from the central axis of the third cleaning brush 542, and the centerline of the avoidance section 5132 coincides with the central axis of the third cleaning brush 542. This helps prevent interference between the base front cover 513 and the third cleaning brush 542 when the base front cover 513 is engaged with the base body 511A. Furthermore, this helps increase the utilization of the space on the second base 51, limits the distance between the base front cover 513 and the third cleaning brush 542, and helps ensure that dust particles generated during the rotation of the third cleaning brush 542 fall along the avoidance section 5132 into the second dust collection box 55, thereby reducing dust within the cleaning chamber 56 and the volume of the self-cleaning assembly 300.

[0189] In some embodiments, as shown in FIG24 , the second base 51 further includes a base rear cover 515 . The base rear cover 515 is disposed between the two end covers 514 and is positioned on the rear side of the cleaning chamber 56 along the thickness direction of the housing 100 . The base rear cover 515 is opposite the base front cover 513 and is rotatably connected to the base body 511A. The base rear cover 515 includes a connecting groove disposed therein. The connecting groove is open on one side facing the cleaning brush assembly 54 . A sealing member is disposed within the connecting groove.

[0190] When the base rear cover 515 is closed to seal the rear side of the cleaning chamber 56, the sealing member is configured to seal the gap between the base rear cover 515 and the third reel 52. When the base rear cover 515 is opened to open the rear side of the cleaning chamber 56, the sealing member is spaced apart from the third reel 52. Specifically, when the base rear cover 515 is connected to the base body 511A, the base body 511A has a connecting groove on the side facing the third reel 52, and the sealing member is disposed within the connecting groove, detachably connected to the connecting groove.

[0191] The rear side of the sealing member is located in the connecting groove, and the front side of the sealing member extends out of the connecting groove and abuts against the third reel 52. For example, the sealing member is a sponge foamed with polyurethane and having high resilience.

[0192] In this way, the connecting groove is provided on the base back cover 515, and the sealing member is provided in the connecting groove, so that the fourth opening 563 of the cleaning chamber 56 can be abutted against the third reel 52 through the sealing member to form a seal on the fourth opening 563, which is beneficial to prevent the dust in the cleaning chamber 56 from flowing to the second fan assembly 30 or the indoor heat exchanger 20, thereby extending the service life of the indoor unit 100A.

[0193] In some embodiments, as shown in FIG24 , the width of the fifth opening 564 is arranged to be inclined from top to bottom along the height direction of the housing 100, that is, the cross-sectional area of ​​the fifth opening 564 decreases from top to bottom along the height direction of the housing 100. The fifth opening 564 is located at the bottom of the cleaning chamber 56. The end of the fifth opening 564 near the cleaning chamber 56 has a larger opening, and the end near the second dust collection box 55 has a smaller opening.

[0194] When the third cleaning brush 542 cleans debris from the filter 210, some debris may splash onto the inner wall of the cleaning chamber 56 due to the centrifugal force generated by the rotation of the third cleaning brush 542. The fifth opening 564 is narrowed from top to bottom along the height direction of the housing 100, allowing dust to flow toward the second dust collection box 55, thereby preventing dead corners on the side walls of the cleaning chamber 56 from causing dust accumulation.

[0195] In some embodiments, as shown in FIG24 , the cleaning chamber 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 disposed at the lower portion of the cleaning chamber 56. The first extension section 561 is connected to the front wall of the cleaning chamber 56, and the second extension section 562 is connected to the rear wall of the cleaning chamber 56. A fifth opening 564 is defined between the first extension section 561 and the second extension section 562. 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 100.

[0196] For example, one end of the first extension section 561 is connected to the bottom of the front wall of the cleaning chamber 56 and is located below the third cleaning brush 542. The other end of the first extension section 561 extends obliquely toward the second dust collection box 55. One end of the second extension section 562 is connected to the bottom of the rear wall of the cleaning chamber 56 and is located below the third cleaning brush 542. The other end of the second extension section 562 extends obliquely toward the second dust collection box 55.

[0197] 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 extend obliquely toward the center of the second dust collecting box 55 at the same time, so that the first extension section 561 and the second extension section 562 are configured to form a funnel-shaped fifth opening 564.

[0198] 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 chamber 56 to prevent the first extension section 561 and the second extension section 562 from interfering with the installation of the second dust collecting box 55 .

[0199] Thus, 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 100, which helps to ensure that debris removed by the third cleaning brush 542 falls into the second dust box 55, reducing the possibility of debris accumulating inside the cleaning chamber 56 or at the fifth opening 564, and reducing the risk of debris falling into areas outside the second dust box 55. Furthermore, the first extension section 561 and the second extension section 562 are entirely located below the third cleaning brush 542, which helps to guide debris removed from the filter 210 into the second dust box 55, preventing debris from accumulating in the cleaning chamber 56.

[0200] In some embodiments, as shown in Figures 24 and 26, the self-cleaning assembly 300 further includes a plug-in portion 58. The plug-in portion 58 is provided on the connecting plate 516 and can move relative to the connecting plate 516 along the length direction of the housing 100. When the self-cleaning assembly 300 is mounted on the housing 100, the plug-in portion 58 moves along the length direction of the housing 100 to a portion of the end extending out of the second base 51, and engages with the housing 100 to achieve the installation of the self-cleaning assembly 300. When it is necessary to disassemble the self-cleaning assembly 300, the plug-in portion 58 is toggled so that the plug-in portion 58 moves along the length direction of the housing 100 toward the center of the second base 51 to separate the plug-in portion 58 from the housing 100, thereby achieving the disassembly of the self-cleaning assembly 300 from the housing 100.

[0201] The plug-in portion 58 is provided in the self-cleaning component 300 , which facilitates the installation and removal of the self-cleaning component 300 and improves the efficiency of installing and removing the self-cleaning component 300 .

[0202] FIG29 is a block diagram of an air conditioner according to some embodiments. As shown in FIG29 , the controller 80 is a device that can generate an operation control signal based on an instruction operation code and a timing signal, thereby instructing the air conditioner 1 to execute the control instruction. In some embodiments, the controller 80 is coupled to the outdoor unit 1001, the indoor unit 1000, the housing 100, the filter 210, and the self-cleaning assembly 300, and is configured to control the operation of each component, thereby causing each component in the air conditioner 1 to operate and realize the various predetermined functions of the air conditioner 1.

[0203] For example, the controller 80 is configured to control the air conditioner 1 to power on and obtain the accumulated operating time of the air conditioner 1. When the accumulated operating time of the air conditioner 1 is greater than a first preset time threshold and less than or equal to a second preset time threshold, and the air conditioner 1 is in the shutdown state, the self-cleaning component 300 is controlled to perform a cleaning function. After the cleaning function of the air conditioner 1 is completed, the air conditioner 1 is controlled to enter the next cleaning cycle.

[0204] In some embodiments of the present disclosure, a control method is provided, which is applied to a controller 80. As shown in FIG30 , in some embodiments, the control method includes S10 to S15.

[0205] S10: Power on the air conditioner 1.

[0206] S11. Obtain the cumulative running time t of the air conditioner 1 on_add .

[0207] After the air conditioner 1 is powered on and started, it enters the first cleaning cycle. The controller 80 obtains and counts the operating status information of the air conditioner 1 to perform corresponding information processing and control instruction issuance operations.

[0208] In some embodiments, the operating status information of the air conditioner 1 includes the continuous operating time t of the air conditioner 1. on , continuous downtime t off , cumulative running time t on_add and the cumulative downtime t off_add , and may also include the operating frequency, operating speed, or operating speed of the compressor of the air conditioner 1 or the operating speed of the indoor fan.

[0209] It should be noted that the continuous running time t on It refers to the continuous operation time with the smallest time difference from the current time; the continuous shutdown time t off Refers to the continuous shutdown time with the smallest time difference from the current time; the cumulative running time t on_add Refers to the cumulative running time in the current cleaning cycle. For example, after the air conditioner 1 enters the current cleaning cycle, it runs continuously for 8 hours, is shut down for 3 hours under user control, and then restarts and runs for 12 hours. At this time, the continuous running time t on 12 hours, continuous downtime t off is 3 hours, the cumulative running time t off_add 8+12=20 hours.

[0210] S12: Determine whether the accumulated running time is greater than the first preset time threshold t1 and less than the second preset time threshold t2. If yes, execute S13; if not, continue to execute S11.

[0211] In some embodiments, the operating status information of the air conditioner 1 includes the cumulative operating time of the air conditioner 1. In this case, a first preset time threshold t1 and a second preset time threshold t2 are pre-set, and the first preset time threshold t1 and the second preset time threshold t2 are used to represent the cumulative operating time of the air conditioner 1. If the cumulative operating time t on_add Satisfy t1<t on_add <t2, the controller 80 determines that the air conditioner 1 needs to clean the filter 210.

[0212] In some embodiments, the first preset time threshold t1 and the second preset time threshold t2 are, for example, 12 to 72 hours, and the first preset time threshold t1 is less than the second preset time threshold t2. For example, the first preset time threshold t1 is set to 24 hours, and the second preset time threshold t2 is set to 32 hours. During the current cleaning cycle, the user controls the air conditioner 1 to start, and the air conditioner 1 runs continuously for 8 hours, then stops running for n hours, then starts up again and runs continuously for 12 hours, then stops running for n hours, then starts up again and runs continuously for 6 hours before shutting down. At this time, the controller 80 obtains the cumulative running time t on_add =8 hours + 12 hours + 6 hours = 26 hours, satisfying t1<t on_add <t2, at this time, continue to execute S13.

[0213] S13, determine whether the air conditioner 1 is in the shutdown state, if so, execute S14, if not, continue to execute S11.

[0214] In the cumulative running time t on_add Satisfy t1<t on_add < t2, if the controller 80 determines that the air conditioner 1 is currently in the shutdown state, it can be determined that the air conditioner 1 meets the preset automatic cleaning conditions. At this time, the controller 80 controls the self-cleaning component 300 to start running and clean the filter 210. Wherein, n>0.

[0215] S14, controlling the self-cleaning component 300 to perform a cleaning function.

[0216] S15: The air conditioner 1 enters the next cleaning cycle.

[0217] After the controller 80 obtains that the cleaning function is completed, the controller 80 controls the air conditioner 1 to restart and continue to operate according to the operating state before cleaning. In addition, the controller 80 clears the operating state information of the current cycle and enters the statistics and control of the next cleaning cycle.

[0218] It should be noted that the time required for the controller 80 to execute different cleaning cycles can be the same or different.

[0219] Thus, in some embodiments, the controller 80 determines whether the air conditioner 1 meets the preset cleaning conditions by obtaining the operating status information of the air conditioner 1 and the power-on or power-off status of the air conditioner 1, thereby cleaning the filter 210. This avoids the user having to remove and clean the filter 210, thereby improving the efficiency of cleaning the filter 210. Furthermore, this can also avoid the problem of dust accumulation on the filter 210 due to the user's failure to clean the filter 210 in a timely manner, which affects the air volume of the air conditioner 1 and the operating performance of the air conditioner 1, thereby ensuring the normal operation of the air conditioner 1.

[0220] As shown in FIG31 , in some embodiments, when determining the cumulative running time t on_add In the case other than (t1, t2), after S12, the control method further includes S21 to S22.

[0221] S21, determine the cumulative running time t on_add Is it greater than or equal to the second preset time threshold t2? If yes, execute S22; if not, continue to execute S11.

[0222] In the current cleaning cycle, the controller 80 detects the cumulative running time t of the air conditioner 1. on_add is greater than the second preset time threshold t2, that is, it satisfies t on_add ≥t2, regardless of whether the current air conditioner 1 is in the shutdown state, it is determined that the air conditioner 1 meets the preset cleaning conditions. At this time, the controller 80 controls the air conditioner 1 to shut down, and controls the self-cleaning component 300 to start running, cleans the filter 210, and after the cleaning function is completed, controls the air conditioner 1 to start running again, and returns to the running state before cleaning. At this time, the air conditioner 1 enters the next cleaning cycle. For example, the fifth preset time threshold t5 is set to 32 hours. In the current cleaning cycle, the user controls the air conditioner 1 to start, and the air conditioner 1 runs continuously for 8 hours, then stops running for n hours, then starts up again and runs continuously for 12 hours, then stops running for n hours, and then starts up again and runs continuously for more than 12 hours. At this time, the controller 80 obtains the cumulative running time t on_add =8 hours + 12 hours + 12 hours = 32 hours, satisfying t on_add ≥t2, it is determined that the air conditioner 1 meets the preset cleaning conditions, and the self-cleaning component 300 is controlled to start running to clean the filter 210.

[0223] S22, controlling the air conditioner 1 to stop.

[0224] In this way, when the air conditioner 1 has been running for a longer period of time and the filter 210 has not been cleaned, the operation of the air conditioner 1 can be forcibly interrupted, and the self-cleaning component 300 can be started to clean the filter 210, thereby avoiding the problem that the user fails to clean the filter 210 in time, resulting in a large amount of dust accumulating on the filter 210, affecting the air output of the air conditioner 1, and then affecting the operating performance of the air conditioner 1, thereby ensuring the normal operation of the air conditioner 1.

[0225] As shown in FIG32 , in some embodiments, the operating status information of the air conditioner 1 includes the continuous operating time t of the air conditioner 1. on At this time, after S10, the control method further includes S31 to S32.

[0226] S31, obtaining the continuous operation time t of the air conditioner 1 on .

[0227] S32, determine the continuous operation time t on Is it greater than the third preset time threshold t3? If so, execute S22; if not, continue to execute S31.

[0228] It should be noted that the third preset time threshold t3 is used to represent the continuous operation time t on When the continuous operation time is t on When it is greater than the third preset time threshold t3, that is, t on At time t3, the controller 80 determines that the air conditioner 1 meets the preset cleaning conditions and controls the self-cleaning component 300 to start and clean the filter 210.

[0229] The third preset time threshold t3 is a preset value. The value range of the third preset time threshold t3 is, for example, [12h, 72h]. For example, t3 is set to 24h. In the current cleaning cycle, the user controls the air conditioner 1 to start running, and the air conditioner 1 has been running continuously for 25h. The current continuous running time t on It is 25h, which is greater than the third preset time threshold t3. At this time, it is determined that the preset cleaning condition is met.

[0230] In some embodiments, if the controller 80 determines that the preset cleaning conditions are met, the air conditioner 1 is first shut down, and then the self-cleaning component 300 is activated to clean the filter 210. After the cleaning function is completed, the air conditioner 1 is restarted and returned to the operating state before the cleaning. Then, assuming that the air conditioner 1 continues to operate for 25 hours after restarting, the air conditioner 1 is again shut down, and the self-cleaning component 300 is activated to clean the filter 210. After the cleaning function is completed, the air conditioner 1 is restarted and returned to the operating state before the cleaning.

[0231] In this way, it is possible to effectively prevent a large amount of dust from accumulating on the filter 210, which would affect the air volume of the air conditioner 1 and further affect the operating performance of the air conditioner 1, thereby ensuring the normal operation of the air conditioner 1.

[0232] It should be noted that, as shown in FIG33 , in some embodiments, before the controller 80 controls the self-cleaning component 300 to perform the cleaning function or controls the air conditioner 1 to shut down, the control method further includes S41 .

[0233] S41: Determine whether a preset condition is met. If yes, execute S22 or S14; if not, continue to execute S11.

[0234] In some embodiments, the preset condition is a prerequisite for the controller 80 to allow the cleaning function to be executed.

[0235] It should be noted that, in some embodiments, the preset conditions include at least one of the following: determining whether a shutdown control command is received; determining whether the current time is outside the user-preset time period; or determining whether the current indoor light intensity is greater than a preset light intensity threshold.

[0236] In this way, after the air conditioner 1 meets the preset cleaning conditions, it also needs to meet the preset conditions before starting the self-cleaning component 300 to clean the filter 210, which can meet the user's life needs. At the same time, it can also avoid the air conditioner 1 being in a special operating mode. The service life of the air conditioner 1 is reduced due to the forced shutdown for cleaning.

[0237] As shown in FIG34 , in some embodiments, the preset condition includes determining whether a shutdown control instruction is received. In this case, S41 includes S411 .

[0238] S411: Determine whether a shutdown control instruction is received. If yes, execute S22 or S14; if no, continue to execute S11 or S31.

[0239] When the controller 80 determines that the preset cleaning conditions are met, if it is determined that the air conditioner 1 is in the on state, but the controller 80 has not received a shutdown control command input by the user, the current operating state of the air conditioner 1 is maintained unchanged, and the self-cleaning component 300 is kept in the off state. If it is determined that the controller 80 has received a shutdown control command input by the user, the air conditioner 1 is shut down and the self-cleaning component 300 is started to clean the filter 210.

[0240] In this way, the user can control the air conditioner 1 to shut down, avoiding affecting the user's normal use of the air conditioner 1.

[0241] As shown in FIG35 , in some embodiments, the preset condition includes determining whether the current time is outside a preset time period. In this case, S41 includes S412.

[0242] S412: Determine whether the current time is outside the preset time period. If yes, execute S22 or S14; if no, continue to execute S11 or S31.

[0243] For example, if the user presets a time period of 23:00 to 7:00, and if it is determined that the current time is within the time period of 23:00 to 7:00, the air conditioner 1 is maintained in its original state and the self-cleaning component 300 is kept in the off state to prevent the noise generated during self-cleaning from affecting the user's needs. If it is determined that the time has reached 7:00 and the air conditioner 1 is in the on state, the air conditioner 1 is controlled to shut down and the self-cleaning component 300 is controlled to start running to clean the filter 210.

[0244] It should be noted that users can set rest time periods or work time periods according to their needs, and can adjust or cancel them according to user needs.

[0245] In this way, the air conditioner 1 does not clean the filter 210 within the time period preset by the user, which can avoid the noise generated when the cleaning function is executed affecting the user's rest.

[0246] As shown in FIG29 , the air conditioner 1 further includes a light intensity detection component 90. The light intensity detection component 90 is disposed on the housing of the air conditioner 1 and is configured to detect the current light intensity in the room. The light intensity detection component 90 is coupled to the controller 80. At this time, as shown in FIG36 , S41 further includes S413.

[0247] S413: Determine whether the current indoor light intensity is greater than a preset light intensity threshold. If yes, execute S22 or S14; if no, continue to execute S11 or S31.

[0248] If it is determined that the current indoor light intensity is greater than the preset light intensity threshold, it indicates that the current indoor light is strong. At this time, if the air conditioner 1 is in the on state, the air conditioner 1 is controlled to be shut down, and the self-cleaning component 300 is controlled to start running to clean the filter 210. If it is determined that the current indoor light intensity is less than or equal to the preset light intensity threshold, it indicates that the current indoor light is weak. At this time, the current operating state of the air conditioner 1 is maintained unchanged, and the self-cleaning component 300 is maintained in the off state.

[0249] It should be noted that if the current indoor light is strong, it is considered to be daytime or the lights are on, and the user is determined not to be resting, and the cleaning function can be executed. If the current indoor light is weak, it is considered to be night, the lights are off, or the curtains are drawn, and the user is determined to be resting, the air conditioner 1 maintains its original state, and the cleaning function is not executed.

[0250] In this way, the noise generated when performing the cleaning function can be avoided from affecting the user's rest.

[0251] As shown in FIG. 37 , in some embodiments, S14 includes S141 to S142 .

[0252] S141 , controlling the driving assembly 400 to rotate in a first direction and reach a first preset rotation angle.

[0253] S142: Control the driving assembly 400 to rotate in a second direction and reach a second preset rotation angle.

[0254] The first direction is opposite to the second direction, and the first preset rotation angle may be the same as the second preset rotation angle, or may be different from the second preset rotation angle.

[0255] In some embodiments, when the air conditioner 1 activates the cleaning function, as shown in Figures 10 and 11, the drive assembly 400 rotates in a first direction, driving the transmission assembly 500 to rotate, thereby driving the first reel 330 and the second reel 340 to rotate. This causes the filter 210 to be wound around the first reel 330 and unwound around the second reel 340, thereby tensioning the filter 210 between the first reel 330 and the second reel 340 and moving relative to the first cleaning brush 320. In this way, the first cleaning brush 320 can clean the area of ​​the filter 210 opposite it. When the drive assembly 400 rotates to a first predetermined rotation angle, it indicates that the entire area of ​​the filter 210 has been cleaned by the first cleaning brush 320. The drive assembly 400 is then controlled to rotate in a second direction to reset.

[0256] For example, if the first direction is clockwise and the second direction is counterclockwise, the driving assembly 400 rotates Y° clockwise, driving the first driving gear 510 to rotate clockwise, and the first reel 330 to rotate clockwise, thereby unwinding the filter screen 210. Then, while rotating clockwise, the first driven gear 510 simultaneously drives the second driven gear 520 to rotate Y° counterclockwise, thereby driving the second reel 340 to rotate counterclockwise and rewind the filter screen 210.

[0257] In some embodiments, as shown in Figures 30, 33, and 34, the drive assembly 400 includes a first drive motor 61 and a second drive motor 62; the transmission assembly 500 includes a first gear 71, a second gear 72, and a third gear 73. After the cleaning assembly is activated, the first drive motor 61 and the second drive motor 62 are controlled to rotate simultaneously, thereby driving the rotation of the cleaning brush 542, the third reel 52, and the fourth reel 53.

[0258] At this time, assuming that the first direction of the first drive motor is clockwise, the second direction is counterclockwise, and the preset rotation angle is X°, the controller 80 controls the first drive motor to rotate clockwise by X° and the second drive motor to rotate counterclockwise by X° at the same time, so that the cleaning brush 542 completes cleaning of the filter 210. Thereafter, the first drive motor is controlled to rotate counterclockwise by X° and the second drive motor is controlled to rotate clockwise by X° at the same time, so that the filter 210 is reset.

[0259] In this way, when the air conditioner 1 meets the preset cleaning conditions and preset conditions, the controller 80 cleans the filter by controlling the mutual coordination of the cleaning brush, the first scroll, the second scroll, the third scroll, the fourth scroll, the drive motor and the transmission assembly, which is beneficial to improving the efficiency of cleaning the filter.

[0260] Those skilled in the art will understand that the scope of the present invention is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims

1. An air conditioner, comprising: Outdoor unit; and an indoor unit connected to the outdoor unit, and comprising: a housing, including an air inlet; a filter covering the air inlet; a self-cleaning component configured to perform a cleaning function to remove debris from the filter; The controller is configured as: Obtaining the accumulated operating time of the air conditioner; If it is determined that the accumulated operating time is greater than a first preset time threshold and less than a second preset time threshold, and the air conditioner is in a shutdown state, controlling the self-cleaning component to perform the cleaning function; wherein the first preset time threshold is less than the second preset time threshold; After the cleaning function is completed, the air conditioner is controlled to enter the next cleaning cycle.

2. The air conditioner according to claim 1, wherein The controller is further configured to: If it is determined that the accumulated operating time is greater than or equal to the second time threshold, the air conditioner is controlled to stop, and the self-cleaning component is controlled to perform the cleaning function.

3. The air conditioner according to claim 1, wherein The controller is further configured to: Obtaining the continuous operation time of the air conditioner; If it is determined that the continuous operation time is greater than a preset third time threshold, the air conditioner is controlled to stop, and the self-cleaning component is controlled to perform the cleaning function.

4. The air conditioner according to any one of claims 1 to 3, wherein: The controller is further configured to: If it is determined that the air conditioner meets the preset condition, the air conditioner is controlled to perform at least one of the following: Controlling the air conditioner to stop; or controlling the self-cleaning component to perform the cleaning function; If it is determined that the air conditioner does not meet the preset condition, at least one of the accumulated operating time or the continuous operating time of the air conditioner is re-acquired.

5. The air conditioner according to claim 4, wherein The preset condition includes: the controller receiving an input shutdown control instruction.

6. The air conditioner according to claim 4 or 5, wherein: The preset condition also includes: the current time is outside the preset time period.

7. The air conditioner according to any one of claims 4 to 6, further comprising a light intensity detection component, wherein the light intensity detection component is configured to detect the current light intensity in the room; The preset conditions also include: The current indoor light intensity is greater than a preset light intensity threshold.

8. The air conditioner according to any one of claims 1 to 7, wherein: The indoor unit further includes a driving assembly configured to drive the self-cleaning assembly; The controller is further configured to: The driving assembly is controlled to rotate in a first direction and reach a first preset rotation angle.

9. The air conditioner according to claim 8, wherein The controller is further configured to control the driving assembly to rotate in a second direction and reach a second preset rotation angle; wherein the first direction is opposite to the second direction.

10. The air conditioner according to claim 8 or 9, wherein: The indoor unit also includes a transmission assembly and a cleaning brush; The transmission assembly is connected to the self-cleaning assembly and the driving assembly respectively, and is configured to Driven by the component, the self-cleaning component is driven to run.

11. The air conditioner according to any one of claims 8 to 10, wherein: The driving assembly includes a first driving motor and a second driving motor; the transmission assembly includes a first gear, a second gear and a third gear; The first driving motor is connected to one of the first gear and the second gear, and is configured to drive the one of the first gear and the second gear to rotate; The second driving motor is connected to the third gear and is configured to drive the third gear to rotate; The controller is also configured to: control the first drive motor to rotate along the first direction to drive the first gear or the second gear to rotate along the first direction, and control the second drive motor to rotate along the second direction to drive the third gear to rotate, and drive the cleaning brush to clean the filter.

12. A method for controlling an air conditioner, wherein: The air conditioner comprises: outdoor unit; and an indoor unit connected to the outdoor unit, and comprising: a housing, including an air inlet; a filter covering the air inlet; a self-cleaning component configured to perform a cleaning function to remove debris from the filter; a controller coupled to the indoor unit and the outdoor unit; The control method includes: Obtaining the accumulated operating time of the air conditioner; If it is determined that the accumulated operating time is greater than a first preset time threshold and less than a second preset time threshold, and the air conditioner is in a shutdown state, controlling the self-cleaning component to perform the cleaning function; wherein the first preset time threshold is less than the second preset time threshold; After the cleaning function is completed, the air conditioner is controlled to enter the next cleaning cycle; If it is determined that the accumulated operating time is greater than or equal to the second time threshold, the air conditioner is controlled to stop, and the self-cleaning component is controlled to perform the cleaning function.

13. The control method according to claim 12, further comprising: Obtaining the continuous operation time of the air conditioner; If it is determined that the continuous operation time is greater than a preset third time threshold, the air conditioner is controlled to stop, and the self-cleaning component is controlled to perform the cleaning function.

14. The control method according to claim 12 or 13, further comprising: If it is determined that the air conditioner meets the preset condition, the air conditioner is controlled to perform at least one of the following: Controlling the air conditioner to stop; or controlling the self-cleaning component to perform the cleaning function; If it is determined that the air conditioner does not meet the preset condition, at least one of the accumulated operating time or the continuous operating time of the air conditioner is re-acquired.

15. The control method according to claim 14, wherein: The preset condition includes: the controller receiving a shutdown control instruction input by a user.

16. The control method according to claim 14 or 15, wherein: The preset condition also includes: the current time is outside the preset time period.

17. The control method according to any one of claims 14 to 16, wherein: The air conditioner further comprises a light intensity detection component, wherein the light intensity detection component is configured to detect the current light intensity in the room; The preset condition also includes: the current light intensity in the room is greater than a preset light intensity threshold.

18. The control method according to any one of claims 12 to 17, wherein: The indoor unit further includes a driving assembly configured to drive the self-cleaning assembly; The control method further includes: The driving assembly is controlled to rotate in a first direction and reach a first preset rotation angle.

19. The control method according to claim 18, further comprising: The driving assembly is controlled to rotate in a second direction and reach a second preset rotation angle; wherein the first direction is opposite to the second direction.

20. The control method according to claim 18 or 19, wherein: The indoor unit also includes a transmission assembly and a cleaning brush; The transmission assembly is connected to the self-cleaning assembly and the driving assembly respectively, and is configured to drive the self-cleaning assembly to operate under the drive of the driving assembly; The driving assembly includes a first driving motor and a second driving motor; the transmission assembly includes a first gear, a second gear and a third gear; The first driving motor is connected to one of the first gear and the second gear, and is configured to drive the one of the first gear and the second gear to rotate; The second driving motor is connected to the third gear and is configured to drive the third gear to rotate; The control method also includes: controlling the first drive motor to rotate along the first direction to drive the first gear or the second gear to rotate along the first direction, and controlling the second drive motor to rotate along the second direction to drive the third gear to rotate and drive the cleaning brush to clean the filter.

Images