Indoor machine of air conditioner

Abstract

To provide an indoor machine of an air conditioner.SOLUTION: An indoor machine includes: a case in which a suction port is installed; a filter assembly including a filter (210) covering the suction port; a self-cleaning assembly including a first cleaning brush (320) constituted so as to remove foreign bodies attached to the filter (210), a first reel (330) connected to one end of the filter (210), and a second reel (340) connected to the other end of the filter (210); a transmission assembly connected to the first reel (330) and the second reel (340); and a drive assembly connected to the transmission assembly, and constituted so as to rotate the first reel (330) and the second reel (340) via the transmission assembly.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from the PCT international patent application bearing application number PCT / CN2023 / 096723, filed on May 29, 2023, the PCT international patent application bearing application number PCT / CN2023 / 105581, filed on July 3, 2023, and the Chinese patent application bearing application number 202211342326.3, filed on October 31, 2022, the entire disclosures of which are incorporated herein by reference. The PCT international patent application claims priority based on the Chinese patent application with application number 202223608409.0 filed on December 30, 2022, and the Chinese patent application with application number 202223602180.X filed on December 30, 2022, and the PCT international patent application with application number PCT / CN2023 / 105581 claims priority based on the Chinese patent application with application number 202321340922.8 filed on May 29, 2023.

[0002] The present disclosure relates to the field of air conditioning technology, and more particularly to an air conditioner and a control method thereof. [Background technology]

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

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

[0005] In one aspect, an air conditioner is provided, the air conditioner comprising 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 assembly, and a controller. The housing has an air inlet. The filter covers the air inlet. The self-cleaning assembly is configured to perform an automatic cleaning function to remove foreign matter on the filter. The controller is configured to: when it is determined that the air conditioner is powered on and operating, obtain a continuous stop time within a current cleaning cycle of the air conditioner; when it is determined that the continuous stop time is greater than a first set time threshold, determine whether a first set condition is met; when it is determined that the first set condition is met, control the air conditioner to stop, control the self-cleaning assembly to perform the automatic cleaning function, and control the air conditioner to enter a next cleaning cycle after the automatic cleaning function has finished executing.

[0006] In another aspect, a control method for an air conditioner is provided, the air conditioner 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 assembly, and a controller. The housing comprises an air inlet. The filter covers the air inlet. The self-cleaning assembly is configured to perform an automatic cleaning function to remove foreign matter on the filter. The controller is coupled to the outdoor unit, the indoor unit, the housing, the filter, and the self-cleaning assembly. The control method includes: when it is determined that the air conditioner is powered on and is running, obtaining a continuous stop time within a current cleaning cycle of the air conditioner; when it is determined that the continuous stop time is greater than a first set time threshold, determining whether a first set condition is met; when it is determined that the first set condition is met, controlling the air conditioner to stop and controlling the self-cleaning assembly to perform the automatic cleaning function; and controlling the air conditioner to enter a next cleaning cycle after the automatic cleaning function has finished running. Here, the first set condition includes that the continuous operation time acquired after the air conditioner is started and operated is greater than a second set time threshold. [Brief explanation of the drawings]

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

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

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

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

[0011] For the sake of convenience, the following descriptions of up, down, left, right, front, and back in this disclosure are based on the state of the indoor unit when it is operating, unless otherwise specified. When the indoor unit is operating, the side facing the user is the front side, and the opposite side is the rear side. The height direction of the indoor unit is the up-down direction. The length direction of the indoor unit is the left-right direction, and the thickness direction of the indoor unit is the front-to-back direction.

[0012] Air conditioners 1 are generally divided into separate-type air conditioners and all-in-one air conditioners. Separate-type air conditioners are equipped with an indoor unit and an outdoor unit, while all-in-one air conditioners 1 integrate all of the components included in the air conditioner 1 into a single housing. Typically, all-in-one air conditioners can be moved freely within a room. Some embodiments of the present disclosure can be applied to separate-type air conditioners or all-in-one air conditioners.

[0013] Taking a separate-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 (indoor heat exchanger or outdoor heat exchanger), expansion valve (indoor expansion valve and outdoor expansion valve), and evaporator (outdoor heat exchanger or indoor heat exchanger) perform the refrigerant circulation of the air conditioner 1. The refrigerant circulation includes a series of processes related to compression, condensation, expansion, and evaporation, and circulates and supplies the refrigerant to the side to be regulated. The indoor fan is configured to promote heat exchange between the refrigerant flowing through the heat transfer tube of the indoor heat exchanger and the indoor air, thereby assisting in temperature regulation.

[0014] As air conditioners become more widespread, users' requirements for them are also increasing. An indoor unit includes 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 foreign matter such as dust from entering the indoor unit. After the indoor unit has been running for a certain period of time, excessive dust and other foreign matter may accumulate on the filter, blocking part of the filter and reducing the amount of air intake, potentially reducing the cooling or heating efficiency of the air conditioner.

[0015] Typically, a roller brush is installed inside an indoor unit to remove foreign matter adhering to the filter, maintaining the filter's high filtering capacity and the indoor unit's cooling or heating efficiency. After the indoor unit has been operating for a certain period of time, the filter accumulates a large amount of foreign matter, necessitating the removal of the filter assembly and cleaning of the filter, roller brush, and other components of the filter assembly. During removal of the filter assembly, a drive motor is connected to the filter to drive the filter relative to the roller brush. Therefore, the drive motor must be removed before removing the filter assembly. However, removing the filter assembly can pose a safety risk, such as electric shock due to contact with the drive motor. Furthermore, the filter assembly is difficult to remove and install, reducing the efficiency of indoor unit assembly and making it difficult for users to clean the filter assembly.

[0016] 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 filtration assembly 200, a self-cleaning assembly 300, a drive assembly 400, and a transmission assembly 500 (see Figure 11).

[0017] As shown in FIG. 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 that is farther from the wall when the indoor unit is attached to the wall. The second plate 192 is the side plate that is closer to the wall when the indoor unit is attached to the wall. The third side plate 193 and the fourth plate 194 are connected to the first plate 191 and the second plate 192, respectively, and extend along a direction perpendicular to the first plate 191 and the second plate 192, respectively. For example, the third side plate 193 is the side plate on one side in the length direction of the housing 100 (i.e., the left-right direction in FIG. 1 ), and the fourth plate 194 is the side plate on the other side in the length direction of the housing 100 (i.e., the left-right direction in FIG. 1 ). For example, the third side plate 193 is the left side plate of the indoor unit 1000, and the fourth plate 194 is the right side plate of the indoor unit 1000.

[0018] The housing 100 has an air inlet 110. For example, a portion of the top of the housing 100 is opened to form the air inlet 110. The filter assembly 200 is installed in 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 and prevent foreign matter in the air from entering the indoor unit 1000. The self-cleaning assembly 300 is installed in the housing 100 and is configured to remove foreign matter adhering to the filter assembly 200.

[0019] The drive assembly 400 is installed on the housing 100, and the transmission assembly 500 is installed within the housing 100. The transmission assembly 500 is connected to the self-cleaning assembly 300 and the drive assembly 400, respectively, and is configured to move the self-cleaning assembly 300 under the driving of the drive assembly 400, causing the self-cleaning assembly 300 to remove foreign matter adhering to the filter assembly 200 and perform self-cleaning operations, thereby maintaining the cooling or heating efficiency of the indoor unit 1000.

[0020] 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 installed within the housing 100 and configured to exchange heat with indoor air entering through the air inlet 110. The first fan assembly 700 is installed on the side of the indoor heat exchanger 600 away from the air inlet 110 and configured to draw in and pump out the indoor air.

[0021] For example, when the first fan assembly 700 operates, the fan rotates to draw in indoor air through the air inlet 110, exchanges heat with the indoor heat exchanger 600, and then pumps out the indoor air that has been heat exchanged through the indoor heat exchanger 600 through the air outlet. The indoor unit 1000 heats or cools the indoor air through the indoor heat exchanger 600, thereby raising or lowering the indoor temperature and achieving a heating or cooling effect.

[0022] 6, 7A, and 7B, the filtration assembly 200 includes a filter 210. The filter 210 is installed between the air inlet 110 and the indoor heat exchanger 600 (as shown in FIG. 5) and covers the air inlet 110, so that the filter 210 can filter out foreign matter in the air entering the indoor unit 1000 through the air inlet 110.

[0023] 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 disposed within 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 closest to the second plate 192 and extends along the thickness direction of the indoor unit 1000 (the front-to-rear direction in FIG. 7A ). A first cavity 313 (e.g., a mounting cavity) is defined within 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 support the filter 210. The filter 210 is mounted on the first bracket 312 and is movable relative to the first bracket 312.

[0024] The first cleaning brush 320, the first reel 330, and the second reel 340 are rotatably installed within the first cavity 313, and 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 foreign matter adhering to the filter 210. The first cleaning brush 320 is installed close to the first reel 330. The first reel 330 and the second reel 340 are installed with a gap between them and are approximately parallel. One end of the filter 210 is connected to the first reel 330, and the other end is connected to the second reel 340. The filter 210 is wound around the outer periphery of at least one of the first reel 330 and the second reel 340, and the filter 210 is stretched between the first reel 330 and the second reel 340.

[0025] 10 and 11, the transmission assembly 500 is mounted on the first base 310, and the transmission assembly 500 is connected to the first reel 330 and the second reel 340, respectively. The transmission assembly 500 is connected to the filter 210 via the first reel 330 and the second reel 340.

[0026] The drive assembly 400 is installed on the housing 100 and includes a drive gear 410. The drive gear 410 is connected to a power output end. The power output end of the drive assembly 400 is detachably connected to a transmission assembly 500. For example, the drive assembly 400 is a drive motor. The drive assembly 400 may drive the filter 210 to move along a predetermined trajectory by rotating the first reel 330 and the second reel 340 in opposite directions via the transmission assembly 500. That is, relative movement occurs between the first cleaning brush 320 and the filter 210, so that different regions of the filter 210 are positioned opposite the first cleaning brush 320.

[0027] For example, the drive assembly 400 rotates the first reel 330 and the second reel 340 via the transmission assembly 500 so that the filter 210 is wound up on the first reel 330 and wound down on the second reel 340, or the filter 210 is wound down on the first reel 330 and wound up on the second reel 340, thereby causing the filter 210 to be stretched between the first reel 330 and the second reel 340 and to move relative to the first cleaning brush 320. In this way, the first cleaning brush 320 can clean the area of ​​the filter 210 facing it.

[0028] The transmission assembly 500 includes a first driven gear 510, a second driven gear 520, a third driven gear 530, and an intermediate gear 540. The first driven gear 510 is attached to one end of the first reel 330, and the first driven gear 510 meshes with the drive gear 410. The second driven gear 520 is attached to one end of the second reel 340, and the second driven gear 520 meshes with the first driven gear 510. The third driven gear 530 is attached to one end of the first cleaning brush 320, and the third driven gear 530 meshes with the intermediate gear 540. Furthermore, the first driven gear 510 meshes with the intermediate gear 540.

[0029] During operation of the self-cleaning assembly 300, the drive assembly 400 operates to rotate the drive gear 410 on the power output end in a first direction, thereby rotating the first driven gear 510 in a second direction, thereby rotating the first reel 330 in the second direction. At the same time, the first driven gear 510 also rotates the second driven gear 520 in the first direction, thereby rotating the second reel 340 in the first direction.

[0030] In this way, under the action of the first reel 330 and the second reel 340, the filter 210 stretched between the first reel 330 and the second reel 340 moves along a predetermined trajectory, so that different areas on the filter 210 face the first cleaning brush 320 in turn, and the first cleaning brush 320 cleans different areas of the filter 210.

[0031] The first direction is opposite to the second direction. When the first reel 330 rotates in the first direction to wind up the filter 210, the second reel 340 rotates in the second direction to wind down the filter 210.

[0032] 7A, 7B, and 11, the first driven gear 510 rotates in a counterclockwise direction under the drive of the drive gear 410, causing the first reel 330 to rotate in a counterclockwise direction and wind up the filter 210. Then, while the first driven gear 510 rotates in a counterclockwise direction, it causes the second driven gear 520 to rotate in a clockwise direction, thereby causing the second reel 340 to rotate in a clockwise direction and wind up the filter 210.

[0033] It is understood that the first driven gear 510 rotates in a clockwise direction under the drive of the drive gear 410, causing the first reel 330 to rotate in a clockwise direction and wind down the filter 210, and then the first driven gear 510 rotates in a clockwise direction while simultaneously rotating the second driven gear 520 in a counterclockwise direction, thereby causing the second reel 340 to rotate in a counterclockwise direction and wind up the filter 210.

[0034] In addition, the first driven gear 510 simultaneously rotates the intermediate gear 540 in the first direction, thereby causing the intermediate gear 540 to rotate the third driven gear 530 in the second direction, and thus causing the first cleaning brush 320 to rotate in the second direction, so that the rotation direction of the first cleaning brush 320 is opposite to the movement direction of the filter 210, which is advantageous for improving the cleaning effect of the first cleaning brush 320 on the filter 210.

[0035] For example, since the first driven gear 510 and the second driven gear 520 have the same number of teeth, the rotation speeds of the first reel 330 and the second reel 340 are the same, so that the filter 210 is stretched on the first reel 330 and the second reel 340.

[0036] 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 direction of the indoor unit 1000 is recessed toward the other side, thereby forming the second cavity 314. The transmission assembly 500 is installed in the second cavity 314, i.e., the first driven gear 510, the second driven gear 520, the third driven gear 530, and the intermediate gear 540 are each installed in the second cavity 314. Providing the second cavity 314 in the first base 310 is advantageous for protecting and concealing the first driven gear 510, the second driven gear 520, the intermediate gear 540 and the third driven gear 530, is advantageous for routing wiring within the indoor unit 1000, and prevents operating items (e.g., the intermediate gear 540) from damaging other items (e.g., the first fan assembly 700).

[0037] 12, 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 FIG. 14, a first prism 511 is provided in the center of the first driven gear 510, and a first hole that fits the first prism 511 is provided at the end of the first reel 330. The first prism 511 passes through the first opening 3141 and is inserted into the first hole, thereby fixedly connecting the first driven gear 510 and the first reel 330.

[0038] A second prism 521 is provided in the center of the second driven gear 520, and a second hole that fits the second prism 521 is provided at the end of the second reel 340. The second prism 521 passes through a second opening 3142 and is inserted into the second hole, thereby fixedly connecting the second driven gear 520 and the second reel 340. A third prism 531 is provided in the center of the third driven gear 530, and a third hole that fits the third prism 531 is provided at the end of the first cleaning brush 320. The third prism 531 passes through a third opening 3143 and is inserted into the third hole, thereby fixedly connecting the third driven gear 530 and the first cleaning brush 320.

[0039] Installing the first opening 3141, the first prism 511, the first hole, the second opening 3142, the second prism 521, the second hole, the third opening 3143, the third prism 531 and the third hole within the indoor unit 1000 is advantageous for realizing the connection between the first driven gear 510 and the first reel 330, the connection between the second driven gear 520 and the second reel 340, and the connection between the third driven gear 530 and the first cleaning brush 320, thereby improving the stability of rotation.

[0040] In this way, indoor air enters the housing 100 through the air inlet 110 under the action of the first fan assembly 700, is filtered through the filter 210, and then flows to the indoor heat exchanger 600. The indoor air undergoes heat exchange through the indoor heat exchanger 600 and is then blown out through the air outlet.

[0041] After the indoor unit 1000 has been operating for a certain period of time, foreign matter in the indoor air is filtered through the filter 210 and then accumulates on the surface of the filter 210, causing a large amount of foreign matter to adhere to the filter 210, which may affect the filtering and suction effects of the filter 210. When a large amount of foreign matter adheres to the filter 210, the self-cleaning assembly 300 of the indoor unit 1000 can remove the foreign matter adhered to the filter 210 and maintain the filtering capacity of the filter 210, thereby improving the cooling or heating efficiency of the indoor unit 1000.

[0042] 8A and 8B , first reel 330 includes first portion 331 and second portion 332, which are detachably connected to each other. Second reel 340 includes third portion 341 and fourth portion 342, which are detachably connected to each other. One end of filter 210 is sandwiched between first portion 331 and second portion 332, and the other end of filter 210 is sandwiched between third portion 341 and fourth portion 342.

[0043] Furthermore, by installing and clamping the first reel 330 and the second reel 340 as a two-part structure that is removably connected, and fixing both ends of the filter 210 to the first reel 330 and the second reel 340, respectively, the stability of the connection between the first reel 330 and the second reel 340 by the filter 210 can be improved, which is advantageous in maintaining the filter stretched between the first reel 330 and the second reel 340.

[0044] The first portion 331, the second portion 332, the third portion 341, and the fourth portion 342 each extend in the thickness direction of the indoor unit 1000 (the front-to-rear direction shown in FIGS. 8A and 8B ), and have a striped structure with an arc-shaped cross section. The outer surfaces of the first portion 331, the second portion 332, the third portion 341, and the fourth portion 342 are smooth, which is advantageous for winding up and down the filter 210 onto the first reel 330 and the second reel 340.

[0045] A first locking portion 333 is provided on the inner surface of the first portion 331, and a second locking portion 334 is provided on the inner surface of the second portion 332. The first locking portion 333 and the second locking portion 334 are locked together, thereby detachably connecting the first portion 331 and the second portion 332. A third locking portion 343 is provided on the inner surface of the third portion 341, and a fourth locking portion 344 is provided on the inner surface of the fourth portion 342. The third locking portion 343 and the fourth locking portion 344 are locked together, thereby detachably connecting the third portion 341 and the fourth portion 342. Connecting the first portion 331 and the second portion 332, and the third portion 341 and the fourth portion 342 together using a locking connection in this manner is advantageous for the user to remove and clean the filter 210.

[0046] 9, 10, and 15, an indoor unit 1000 includes a plurality of filtration assemblies 200 and a plurality of self-cleaning assemblies 300. The housing 100 includes a plurality of air inlets 110. Each filtration assembly 200 corresponds to one self-cleaning assembly 300, and each air inlet 110 corresponds to one filtration assembly 200.

[0047] It is understood that installing multiple air intakes 110, multiple filter assemblies 200 and multiple self-cleaning assemblies 300 in the indoor unit 1000 is advantageous in increasing the intake air volume and outlet air volume of the indoor unit 1000, and therefore the cooling efficiency or heating efficiency of the indoor unit 1000 can be improved.

[0048] The indoor unit 1000 further includes a plurality of drive assemblies 400 and a plurality of transmission assemblies 500, and each drive assembly 400 corresponds to one transmission assembly 500. Each drive assembly 400 is connected to a filter assembly 200 via its corresponding transmission assembly 500. In this way, each filter assembly 200 can be driven individually to perform a self-cleaning operation.

[0049] 13 and 14 , the indoor unit 1000 further includes at least one link 550. The multiple transmission assemblies 500 are connected via the link 550. The power output end of the drive assembly 400 is connected to the link 550. In this manner, the drive assembly 400 can drive the multiple self-cleaning assemblies 300 to operate via the link 550 and the multiple transmission assemblies 500, which is advantageous in simplifying the structure of the indoor unit 1000.

[0050] 12 , the first base 310 further includes a notch 315. For example, the side of the second cavity 314 closer to the second plate 192 is opened to form the notch 315. A portion of the first driven gear 510 protrudes from the notch 315, and the drive gear 410 meshes with the portion of the first driven gear 510.

[0051] It will be understood that the detachable connection between the transmission assembly 500 and the drive assembly 400 is achieved by the meshing between the first driven gear 510 and the drive gear 410. Providing the notch 315 in the first base 310 is advantageous for achieving the meshing between the drive gear 410 and the first driven gear 510. When removing the transmission assembly 500, the drive gear 410 is not removed from the housing 100 together with the second mounting portion 311, and the first driven gear 510 is removed from the housing 100 together with the second mounting portion 311.

[0052] That is, the power output end of the drive assembly 400 and the transmission assembly 500 are detachably connected, but the transmission assembly 500 is connected to the self-cleaning assembly 300, and the filtration assembly 200 is connected to the self-cleaning assembly, so that when a user needs to remove the filtration assembly 200 and the self-cleaning assembly 300 to clean them, the user can remove the first base 310 from the housing 100 and remove the self-cleaning assembly from the housing 100. At the same time, the drive assembly 400 is not removed from the housing 100 together with the transmission assembly 500, but the transmission assembly 500 is removed from the housing 100 together with the self-cleaning assembly 300.

[0053] In this manner, a user can remove and clean the filtration assembly 200 and the self-cleaning assembly 300 without touching the drive assembly 400, which advantageously avoids safety hazards associated with touching the drive assembly 400. Furthermore, because the drive assembly 400 is hidden within the housing 100, it is advantageously protected and can avoid damage from external influences.

[0054] In some embodiments, as shown in FIG. 2 , the housing 100 further includes a first connecting portion 120 and a first mounting portion 130 (e.g., a mounting groove). For example, a portion of the front side of the housing 100 is opened to form the first connecting portion 120. The 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 communicates with the first mounting portion 130 and is located above the first mounting portion 130. The second mounting portion 311 is provided within the first mounting portion 130. The self-cleaning assembly 300 is installed inside the second mounting portion 311, and the transmission assembly 500 is installed outside the second mounting portion 311. The first bracket 312 is installed within the housing 100 via the first connecting portion 120.

[0055] The first reel 330, the second reel 340, and the first cleaning brush 320 are installed in the second mounting portion 311, which is installed in the first mounting portion 130. One side of the first bracket 312 is connected to the second mounting portion 311 and extends rearward via the first connecting portion 120. Therefore, a user can remove the first bracket 312 and the filter 210 together with the second mounting portion 311 from the housing 100 by removing the second mounting portion 311 from the first mounting portion 130 via the first connecting portion 120, thereby realizing removal of the filtration assembly 200 and the self-cleaning assembly 300. This reduces the difficulty of removing and installing the filtration assembly 200 and the self-cleaning assembly 300, which is advantageous in that it makes it easier for the user to clean the removed filtration assembly 200 and the self-cleaning assembly 300.

[0056] Similarly, the user can attach the second mounting portion 311 into the first mounting portion 130 via the first connection portion 120, so that the first bracket 312 and the filter 210 are attached to the housing 100 together with the second mounting portion 311, thereby realizing the installation of the filtration assembly 200 and the self-cleaning assembly 300.

[0057] 9, 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 installed on the first plate 191 of the housing 100 and is adjacent to the first mounting portion 130. The first position limiting portion 160 is configured to be rotatably switched between a locked position and an unlocked position.

[0058] For example, when the first position limiting portion 160 is in the locked position, at least a portion of the first position limiting portion 160 is in front of the second mounting portion 311, and therefore prevents the second mounting portion 311 from sliding out of the first mounting portion 130. When the first position limiting portion 160 is in the unlocked position, the first position limiting portion 160 is on the first plate 191 of the housing 100, and therefore the second mounting portion 311 can slide forward and detach from the first mounting portion 130.

[0059] When the indoor unit 1000 is operating, the first position limiting part 160 is in a locked position to prevent the second mounting part 311 from sliding out of the first mounting part 130. When the filtration assembly 200 needs to be cleaned, the second mounting part 311 can be removed by rotating the first position limiting part 160 to the unlocked position.

[0060] For example, the indoor unit 1000 includes a plurality of first position limiting portions 160. Providing a plurality of first position limiting portions 160 in the housing 100 is advantageous for the user to attach and detach the filter assembly 200.

[0061] 15 , the self-cleaning assembly 300 further includes a first dust collection box 350 and an ash removal box 360. The first dust collection box 350 is mounted on the first base 310 and positioned below the first cleaning brush 320. The first dust collection box 350 is configured to collect foreign matter removed from the filter 210.

[0062] As shown in FIGS. 3 and 9, the indoor unit 1000 further includes a third engagement groove 150. The third engagement groove 150 is provided in the first plate 191 of the housing 100. The ash drop box 360 is installed in the third engagement groove 150, and the ash drop box 360 is located below the first dust collection box 350. The third engagement groove 150 has a first side wall 151 and a second side wall 152 that are spaced apart along the length of the indoor unit 1000 (i.e., the left-right direction in FIG. 9). The first side wall 151 is provided with a first engagement groove 153, and the second side wall 152 is provided with a second engagement groove 154. As shown in FIG. 12, the ash drop box 360 is provided with a first engagement block and a second engagement block that are spaced apart along the length of the indoor unit 1000 (i.e., the left-right direction in FIG. 9).

[0063] The ash box 360 is removably mounted in the third engagement groove 150 by the engagement between the first engagement block and the first engagement groove 153 and the engagement between the second engagement block and the second engagement groove 154 .

[0064] 15 and 16 , the self-cleaning assembly 300 further includes a second cleaning brush 370. The second cleaning brush 370 is installed in the first dust collection box 350 and configured to brush foreign matter adhering to the first cleaning brush 320 into the first dust collection box 350. The second cleaning brush 370 includes a second bristle brush 371, which is configured to be inserted into the first cleaning brush 320.

[0065] When the self-cleaning assembly is operating, some foreign matter may adhere to the first bristle brush 321, and the second bristle brush 371 can brush the foreign matter adhered to the first bristle brush 321 into the first dust collection box 350. Therefore, the first bristle brush 321 can contact the filter 210 without any foreign matter attached to it and remove the foreign matter adhered to the filter 210, which is advantageous in improving the cleaning effect of the filter 210.

[0066] 1 and 4 , the indoor unit 1000 further includes a panel 800. The panel 800 is removably connected to the front side of the housing 100 and seals the first connector 120. For example, when the indoor unit 1000 is operating, the panel 800 is installed to cover the front side of the housing 100, thereby harmonizing the appearance of the indoor unit 1000. When the filtration assembly 200 and the self-cleaning assembly 300 need to be removed and cleaned, the panel 800 can be removed from the front side of the housing 100, and then the filtration assembly 200 and the self-cleaning assembly 300 can be removed from the housing 100 via the first connector 120.

[0067] 2, a first fitting portion is provided on the inner surface of the panel 800, and a second fitting portion 140 is provided on the front side of the housing 100. The first fitting portion and the second fitting portion 140 are connected by engagement, so that the panel 800 is removably connected to the front side of the housing 100.

[0068] 17 , filter 210 includes filtering section 211 and blocking section 212 connected in sequence. Filtering section 211 is configured to filter air entering housing 100 through air inlet 110. Blocking section 212 is configured to block air entering housing 100 through air inlet 110.

[0069] For example, when filter 210 moves along a preset trajectory, filter 210 can move between a filtering position and a blocking position. When filter 210 is in the filtering position, filtering unit 211 covers suction port 110 and filters air entering housing 100 through suction port 110. When filter 210 is in the blocking position, blocking unit 212 covers suction port 110 and blocks air entering housing 100 through suction port 110.

[0070] When indoor unit 1000 is operating, filter 210 is in the filtering position, and filtering section 211 covers air inlet 110 to filter the air entering through air inlet 110. When the indoor unit is shut down, filter 210 moves from the filtering position to the blocking position, and blocking section 212 covers air inlet 110, so that air and dust are blocked by blocking section 212, preventing dust from entering the interior of housing 100.

[0071] It is understood that the filtering section 211 is an area having a plurality of small holes, and the plurality of holes on the filtering section 211 can filter foreign matter such as large particles of dust in the air and allow the filtered air to enter the housing 100. The blocking section 212 is an area without holes, and air and dust cannot pass through. For example, the blocking section 212 is made of a plastic film, and a heat-sealed section is provided between the blocking section 212 and the filtering section 211 to connect the blocking section 212 and the filtering section 211.

[0072] In this way, by providing the blocking section 212 in the filter 210, air and dust cannot enter the housing 100 when the indoor unit 1000 stops operating, which prevents dust and other particles from entering the housing 100 and prevents foreign matter such as dust from adhering to the indoor heat exchanger 600 or the first fan assembly 700 inside the housing 100. This makes it possible to keep the inside of the indoor unit 1000 cleaner, which is advantageous for improving the cooling or heating effect of the indoor unit 1000.

[0073] 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 execution of a self-cleaning mode. For example, the signal is a signal instructing the indoor unit 1000 to execute or stop the self-cleaning mode. When the amount of foreign matter on the filter 210 reaches a preset amount, the sensor sends a signal to the controller indicating execution of the self-cleaning mode. When the amount of foreign matter on the filter 210 is less than the preset amount, the sensor sends a signal to the controller indicating stop of the self-cleaning mode.

[0074] The controller is configured to receive a signal from the sensor, respond to the signal, and control the indoor unit 1000 to perform an operation instructed by the signal. For example, when a signal indicating execution of a self-cleaning mode is received from the sensor, the controller controls the indoor unit 1000 to execute the self-cleaning mode. When a signal indicating termination of the self-cleaning mode is received from the sensor, the controller controls the indoor unit 1000 to terminate the self-cleaning mode.

[0075] For example, after the indoor unit 1000 has been operating for a certain period of time, the indoor air continues to flow from the air inlet 110 to the indoor heat exchanger 600 under the action of the first fan assembly 700, and after heat exchange in the indoor heat exchanger 600, the air is sent into the room through the air outlet by the first fan assembly 700. As a result, an increase in foreign matter adheres to the filter 210 facing the air inlet 110 inside the indoor unit 1000. When the amount of foreign matter on the filter 210 reaches a preset amount, the sensor sends a signal to the controller indicating execution of the self-cleaning mode.

[0076] The controller receives a signal indicating execution of the self-cleaning mode from the sensor and controls the indoor unit 1000 to execute the self-cleaning mode. When the self-cleaning mode is executed, the drive assembly 400 rotates the first reel 330 and the second reel 340 in opposite directions via the transmission assembly 500, thereby driving the filter 210 to move along a preset trajectory. The first cleaning brushes 320 are installed opposite different areas of the filter 210 and can clean the areas of the filter 210 that are installed opposite them.

[0077] When the first reel 330 and the second reel 340 rotate in opposite directions, the first cleaning brush 320 comes into contact with the first reel 330 to remove foreign matter from the filter 210 wound around the first reel 330, and the foreign matter falls into the first dust collecting box 350, where it is collected. If there is a large amount of foreign matter in the first dust collecting box 350, the first dust collecting box 350 can be removed and cleaned.

[0078] In some embodiments of the present disclosure, another indoor unit 100A is provided. As shown in Fig. 19 , 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.

[0079] 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 that is farther from the wall when the indoor unit is attached to a wall inside a room. The sixth plate 13 is the side plate that is closer to the wall when the indoor unit is attached to a wall inside a room. The seventh plate 14 and the eighth plate 15 are connected to the fifth plate 12 and the sixth plate 13, respectively, and extend in a direction perpendicular to the fifth plate 12 and the sixth plate 13, respectively.

[0080] For example, the seventh panel 14 is a side panel on one side in the length direction of the housing 100 (i.e., the left-right direction in FIG. 20), and the eighth panel 15 is a side panel on the other side in the length direction of the housing 100. For example, the seventh panel 14 is a side panel on the left side of the indoor unit 100A, and the eighth panel 15 is a side panel on the right side of the indoor unit 100A.

[0081] The housing 100 has 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 Fig. 20, the housing 100 has two air inlets 110, which are respectively installed at the top of the housing 100 and spaced apart along the length of the housing 100.

[0082] A portion of the bottom of the housing 100 is open, forming an air outlet. The indoor heat exchanger 20 is installed within the housing 100 and configured to exchange heat with indoor air entering through the air inlet 110. The second fan assembly 30 is installed on the side of the indoor heat exchanger 20 away from the air inlet 110 and configured to draw in and pump out the indoor air. For example, when the second fan assembly 30 is operating, the fan rotates to draw in indoor air through the air inlet 110, exchanges heat with the indoor heat exchanger 20, and then pumps out the indoor air that has been heat exchanged by the indoor heat exchanger 20 through the air outlet.

[0083] It is understood that indoor air enters the housing 100 through the air inlet 110 under the action of the second fan assembly 30, is filtered by the filter 210, and then enters the indoor heat exchanger 20 for heat exchange. For example, when the indoor unit 100A is in cooling mode, the indoor air exchanges heat with the indoor heat exchanger 20, and then forms cool air that is blown into the room through the air outlet.

[0084] In addition, the second fan assembly 30 can guide indoor air from the air inlet 110 to the indoor heat exchanger 20, increasing the amount of air suction entering the indoor heat exchanger 20 from the air inlet 110, and the second fan assembly 30 can adjust the amount of air suction entering the indoor heat exchanger 20.

[0085] The filter 210 is installed between the air inlet 110 and the indoor heat exchanger 20, and covers the air inlet 110. The filter 210 is configured to filter the air entering the indoor unit 100A from the air inlet 110, and to prevent foreign matter in the air from entering the indoor unit 100A.

[0086] For example, when the indoor unit 100A is operating, indoor air that enters the housing 100 through the air inlet 110 first passes through the filter 210 and is filtered by the filter 210 before entering the indoor heat exchanger 20, thereby preventing foreign matter in the indoor air from entering the indoor heat exchanger 20 and preventing the foreign matter from accumulating in the indoor heat exchanger 20 and causing clogging and reducing the heat exchange efficiency of the indoor heat exchanger 20. The indoor air that has undergone heat exchange by the indoor heat exchanger 20 is blown out from the air outlet under the action of the second fan assembly 30.

[0087] The self-cleaning assembly 300 is installed within the housing 100 and configured to clean foreign matter adhering to the filter 210. The drive assembly 400 is installed on the housing 100, and the transmission assembly 500 is installed within the housing 100. The drive assembly 400 is configured to drive the transmission assembly 500 to rotate. The transmission assembly 500 is connected to the self-cleaning assembly 300 and the drive assembly 400, respectively, and is configured to move the self-cleaning assembly 300 under the drive of the drive assembly 400, causing the self-cleaning assembly 300 to remove foreign matter adhering to the filter assembly 200 and maintain the cooling or heating efficiency of the indoor unit 100A.

[0088] In some embodiments, as shown in FIG. 24 , 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 collection box 55. The second base 51 is disposed within the housing 100 and is adjacent to the fifth plate 12. The second base 51 includes a base main body 511A and a second bracket 512. One side of the second bracket 512 is connected to the side of the base main body 511A that is closer to the sixth plate 13 and extends along the thickness direction of the housing 100 (i.e., the front-to-rear direction shown in FIG. 20 ). The second bracket 512 is configured to support the filter 210. The filter 210 is mounted on the second bracket 512 and may move along a predetermined trajectory on the second bracket 512.

[0089] The fourth reel 53, the third reel 52, and the cleaning brush assembly 54 are rotatably connected to the base main body 511A, and each of the fourth reel 53, the third reel 52, and the cleaning brush assembly 54 extends along the length of the housing 100. The fourth reel 53 and the third reel 52 are spaced apart and substantially parallel to each other. One end of the filter 210 is connected to the fourth reel 53, and the other end is connected to the third reel 52. The filter 210 is wound around the outer periphery of at least one of the fourth reel 53 and the third reel 52, and the filter 210 is stretched between the fourth reel 53 and the third reel 52. The cleaning brush assembly 54 is located adjacent to the third reel 52 and is configured to clean foreign matter on the filter 210 when the third reel 52 winds up or winds down the filter 210.

[0090] The self-cleaning assembly 300 further includes a cleaning cavity 56. The cleaning cavity 56 is defined within the base main body 511A. The cleaning cavity 56 includes a fourth opening 563 and a fifth opening 564. The top of the cleaning cavity 56 is open, forming the fourth opening 563. The bottom of the cleaning cavity 56 is open, forming the fifth opening 564. The fourth reel 53 is located above the fourth opening 563, the third reel 52 is located in the fourth opening 563, and the cleaning brush assembly 54 is located within the cleaning cavity 56. The second dust collection box 55 is located below the fifth opening 564 and is configured to contain foreign matter swept off the filter 210 by the cleaning brush assembly 54.

[0091] In some embodiments, the fourth reel 53 and the third reel 52 rotate in opposite directions. During the cleaning process using the self-cleaning assembly 300, the filter 210 is wound up on the third reel 52 and then wound down on the fourth reel 53, or the filter 210 is wound down on the third reel 52 and then wound up on the fourth reel 53. At least a portion of the cleaning brush assembly 54 contacts the filter 210, and as the filter 210 is wound up and then wound up, the cleaning brush assembly 54 moves relative to the filter 210. The cleaning brush assembly 54 can be installed opposite different areas of the filter 210 and can clean different areas of the filter 210. Foreign matter on the filter 210 is removed by the cleaning brush assembly 54 and transported into the second dust collection box 55.

[0092] 25 , 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 provided 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 provided on and connected to the fourth mounting portion 5412. One end of any one of the at least one elastic member 543 abuts the third mounting portion 5411, and the other end abuts the fourth mounting portion 5412.

[0093] For example, the elastic material 543 is a spring. The third cleaning brush 542 is provided on the side of the third mounting portion 5411 that is away from the fourth mounting portion 5412. When the third cleaning brush 542 abuts against the third reel 52, the third reel 52 applies a force to the third cleaning brush 542, i.e., the third reel 52 applies a force to the third mounting portion 5411, thereby causing the third mounting portion 5411 to compress the elastic material 543.

[0094] Because the fourth mounting portion 5412 does not move in the height direction of the housing 100 (i.e., the up-and-down direction in FIG. 20 ), the elastic material 543 applies an elastic force to the third mounting portion 5412 of the same magnitude but opposite direction as the third cleaning brush 542 applies a force to the third reel 52, thereby elastically contacting the third cleaning brush 542 with the third reel 52. The cleaning brush base 541 contacts the third cleaning brush 542 with the third reel 52 via the elastic material 543, thereby ensuring that the third cleaning brush 542 always contacts the third reel 52 while the third reel 52 or the cleaning brush base 541 is rotating, which is advantageous for improving the ability of the third cleaning brush 542 to clean the filter 210 wound around the third reel 52. At the same time, excessive wear of the third cleaning brush 542 due to hard contact between the third reel 52 and the third cleaning brush 542 is avoided, and the service life of the third cleaning brush 542 is extended.

[0095] It is understood that the third cleaning brush 542 abuts against the third reel 52 via the elastic material 543, and when the fourth reel 53 and the third reel 52 rotate in opposite directions, the third cleaning brush 542 abuts against the third reel 52 and can clean the filter 210 that has moved to the abutment area, so that foreign matter brushed off from the filter 210 falls into the second dust collection box 55 and is collected. Because the third reel 52 vibrates or vibrates radially during rotation, the elasticity of the elastic material 543 improves the stability of the abutment between the third cleaning brush 542 and the third reel 52 and is advantageous in avoiding hard contact between the third reel 52 and the third cleaning brush 542.

[0096] For example, after the indoor unit 100A has been operating for a certain period of time, the indoor air continues to enter the indoor heat exchanger 20 under the action of the second fan assembly 30, undergoes heat exchange by the indoor heat exchanger 20, and is then sent into the room. After the indoor air that has entered the indoor heat exchanger 20 is filtered through the filter 210, foreign matter in the indoor air accumulates on the surface of the filter 210, increasing the amount of foreign matter adhering to the filter 210 and affecting the filtering and suction effects of the filter 210.

[0097] When a large amount of foreign matter adheres to the filter 210, the indoor unit 100A executes the self-cleaning mode to clean the foreign matter adhered to the filter 210 and maintain the filtering capacity of the filter 210, thereby improving the cooling or heating efficiency of the indoor unit 100A. When the indoor unit 100A executes the self-cleaning mode, the fourth reel 53 and the third reel 52 rotate, causing the filter 210 to be wound up on the fourth reel 53 and unwound on the third reel 52, or the filter 210 to be unwound on the fourth reel 53 and unwound on the third reel 52. The filter 210 moves relative to the third cleaning brush 542 under the action of the fourth reel 53 and the third reel 52, so that the third cleaning brush 542 is positioned opposite and cleans different areas of the filter 210.

[0098] 21 and 26 , the second dust collection box 55 includes a dust collection box main body 551 and a fourth hole 553. The fourth hole 553 is provided at one end of the dust collection box main body 551 along the length of the housing 100. The housing 100 further includes a positioning member, which is provided on a side panel along the length of the housing 100. The fourth hole 553 is matingly engaged with the positioning member, thereby realizing a detachable connection between the second dust collection box 55 and the housing 100. When foreign matter needs to be cleaned from the second dust collection box 55, the second dust collection box 55 can be removed from the housing 100 via the fourth hole 553 and the positioning member, and the foreign matter inside the second dust collection box 55 can be cleaned.

[0099] 26, second dust collection box 55 further includes a baffle plate 552. Baffle plate 552 is provided on the front side of dust collection box main body 551. One end of baffle plate 552 is connected to dust collection box main body 551, and the other end of baffle plate 552 extends upward along the height direction of housing 100 (i.e., the up-and-down direction shown in FIG. 20). Baffle plate 552 is configured to seal a gap between the front side of second dust collection box 55 and the front side of second base 51 when second dust collection box 55 is assembled to second base 51, thereby preventing foreign matter inside second dust collection box 55 from spilling out through the gap.

[0100] 25 , 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 provided on the open side of the second mounting portion 5412. The third mounting portion 5411 and the fourth mounting portion 5412 define the third cavity 544. The elastic material 543 is disposed within the third cavity 544. Both ends of the elastic material 543 are connected to the third mounting portion 5411 and the fourth mounting portion 5412 so as to abut against each other. Therefore, when the third mounting portion 5411 is pressed, the third mounting portion 5411 can move toward the fourth mounting portion 5412. Thus, providing the cleaning brush assembly 54 with the third cavity 544 is advantageous for mounting the elastic material 543 and prevents the elastic material 543 from slipping out of the cleaning brush base 541.

[0101] 25 , the cleaning brush assembly 54 further includes at least one positioning post 545. Any one of the at least one positioning post 545 is provided on either the third mounting portion 5411 or the fourth mounting portion 5412. The elastic member 543 is installed by fitting onto any one of the positioning posts 545.

[0102] For example, if the cleaning brush assembly 54 includes two positioning posts 545 and two elastic members 543, and the two positioning posts 545 are provided on the fourth mounting portion 5412, the two positioning posts 545 are provided on both ends of the fourth mounting portion 5412 along the length direction of the housing 100. The elastic members 543 are respectively fitted into the positioning posts 545. Providing the positioning posts 545 on the cleaning brush assembly 54 in this manner is advantageous for realizing positional restriction and mounting of the elastic members 543, allowing the elastic members 543 to move along the height direction of the housing 100, and the third mounting portion 5411 allowing the third cleaning brush 542 to move relative to the fourth mounting portion 5412.

[0103] 25 , the cleaning brush base 541 further includes at least one fourth engagement groove 5414 and at least one fifth locking portion 5415. The at least one fourth engagement groove 5414 is provided on at least one of both side walls of the third mounting portion 5411 along the width direction of the housing 100. The at least one fifth locking portion 5415 is provided on at least one of both side walls of the fourth mounting portion 5412 along the width direction of the housing 100. The fifth locking portion 5415 and the fourth engagement groove 5414 are fitted and engaged with each other, thereby connecting the third mounting portion 5411 to the fourth mounting portion 5412. When the fifth locking portion 5415 is engaged in the fourth engagement groove 5414, the fifth locking portion 5415 may move within the fourth engagement groove 5414 along the height direction of the housing 100.

[0104] For example, when at least one third mounting portion 5411 includes a plurality of fourth engagement grooves 5414, the plurality of fourth engagement grooves 5414 are provided at intervals on both side walls of the third mounting portion 5411 along the width direction of the housing 100. Corresponding to the plurality of fourth engagement grooves 5414, a plurality of fifth locking 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 locking portions 5415 are provided at intervals along the length direction of the housing 100.

[0105] When the third mounting portion 5411 fits and engages with the fourth mounting portion 5412, the multiple fourth engagement grooves 5414 fit and engage with the multiple fifth locking portions 5415, thereby realizing the attachment of the third mounting portion 5411 and the fourth mounting portion 5412.

[0106] For example, by making the length of the fourth engagement groove 5414 along the height direction of the housing 100 greater than the length of the fifth locking portion 5415 along the height direction of the housing 100, the third mounting portion 5411 can move relative to the fourth mounting portion 5412 along the height direction of the housing 100.

[0107] It will be understood that when the third cleaning brush 542 contacts 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 in a direction away from the fourth mounting portion 5412. In this way, the third mounting portion 5411 and the fourth mounting portion 5412 are engaged with each other by fitting the fourth engagement groove 5414 into the fifth locking portion 5415. This is advantageous for improving the efficiency of assembling the third mounting portion 5411 and the fourth mounting portion 5412, simplifying the structure of the cleaning brush base 541, and improving the stability of the assembly of the third mounting portion 5411 and the fourth mounting portion 5412.

[0108] Furthermore, when the fifth locking portion 5415 engages in the fourth engagement groove 5414, the fifth locking portion 5415 moves relative to the fourth engagement groove 5414, which is advantageous for realizing movement of the third mounting portion 5411 relative to the fourth mounting portion 5412, and abutting the third cleaning brush 542 against the third reel 52, thereby improving the cleaning efficiency of the third cleaning brush 542 on the filter 210.

[0109] 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. Both ends of the second connecting portion 5413 along the thickness direction of the housing 100 are connected to the upper sides of the first side portion 5416 and the second side portion 5417, respectively. The lower sides of the first side portion 5416 and the second side portion 5417 extend toward the 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 together constitute the third mounting portion 5411.

[0110] The first side portion 5416 and the second side portion 5417 extend toward the fourth mounting portion 5412. One end of the elastic material 543 abuts against the second connecting portion 5413, and the other end of the elastic material 543 is fitted into a 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 by the mating engagement between the fourth engagement groove 5414 and the fifth locking 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 both side walls of the fourth mounting portion 5412 in the thickness direction of the housing 100, forming a positional restriction for the fourth mounting portion 5412 and preventing the elastic material 543 from slipping out.

[0111] The cleaning brush base 541 has a first side portion 5416, a second side portion 5417 and a second connecting portion 5413 to form a third mounting portion 5411, which gives the third mounting portion 5411 good structural strength and is advantageous for mounting the third mounting portion 5411 and the third cleaning brush 542, making the mounting of the third cleaning brush 542 more solid and preventing the third cleaning brush 542 from falling off the cleaning brush base 541.

[0112] In some embodiments, as shown in FIGS. 25 and 26 , the self-cleaning assembly 300 further includes a mounting groove 57. The mounting groove 57 is located on the side of the second connecting portion 5413 away from the fourth mounting portion 5412. The third cleaning brush 542 is installed in the mounting groove 57. The bottom surface of the mounting groove 57 is flush with the surface of the third cleaning brush 542 closer to the third reel 52 and is arc-shaped. This allows the third cleaning brush 542 to clean the filter 210 when it contacts the third reel 52, and allows foreign matter generated during cleaning to fall from the surface of the third cleaning brush 542 into the cleaning cavity 56. Thus, providing the mounting groove 57 in the self-cleaning assembly 300 is advantageous for mounting the third cleaning brush 542, improving the stability of the mounting of the third cleaning brush 542 and improving the positional restriction of the third mounting portion 5411 relative to the third cleaning brush 542.

[0113] 23, 26, and 27, the self-cleaning assembly 300 is connected to two transmission assemblies 500. The drive assembly 400 is connected to one of the two transmission assemblies 500. The two transmission assemblies 500 are disposed at opposite ends of the self-cleaning assembly 300 along the length of the housing 100. The drive assembly 400 is disposed at one end of the housing 100 along the length of the housing 100.

[0114] 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 provided at both ends of the fourth reel 53, the two second gears 72 are provided at both ends of the third reel 52, and the two third gears 73 are provided at both ends of the cleaning brush base 541.

[0115] 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 configured to drive either the first gear 71 or the second gear 72 to rotate. The second drive motor 62 is connected to the third gear 73 and configured to drive the third gear 73 to rotate.

[0116] Taking the connection between the first drive motor 61 and the second gear 72 as an example, when the self-cleaning assembly 300 performs the self-cleaning mode, the first drive motor 61 drives the second gear 72 to rotate in a first direction, causing the third reel 52 to rotate in the first direction. At the same time, the second gear 72 further drives the first gear 71 to rotate in a second direction, thereby causing the fourth reel 53 to rotate in the second direction. The second drive motor 62 drives the third gear 73 to rotate, thereby rotating the cleaning brush base 541.

[0117] The first direction is opposite to the second direction. When the fourth reel 53 rotates in the second direction to wind down the filter 210, the third reel 52 rotates in the first direction to wind up the filter 210.

[0118] In this way, under the action of the fourth reel 53 and the third reel 52, the filter 210 stretched between the fourth reel 53 and the third reel 52 moves along a predetermined trajectory, causing relative movement between the third cleaning brush 542 and the filter 210, thereby enabling the third cleaning brush 542 to clean the filter 210.

[0119] It will be understood that both ends of the fourth reel 53 are respectively connected to the first gear 71, and the fourth reel 53 realizes a rotational connection with the second base 51 via the first gear 71. Both ends of the third reel 52 are respectively connected to the second gear 72, and the third reel 52 realizes a rotational connection with the second base 51 via the second gear 72. Both ends of the cleaning brush base 541 are respectively connected to the third gear 73, and the cleaning brush base 541 realizes a rotational connection with the second base 51 via the third gear 73.

[0120] 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, i.e., the indoor unit 100A includes two such self-cleaning devices. The two self-cleaning assemblies 300 are spaced apart along the length of the housing 100.

[0121] 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 installed 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 rotating the self-cleaning assembly 300.

[0122] Since a transmission assembly 500 is provided at each end of the two self-cleaning assemblies 300, there is no need to distinguish between the left and right sides when installing the self-cleaning assemblies 300 in the housing 100, which is advantageous in improving the installation efficiency of the self-cleaning assemblies 300.

[0123] 27 , the drive assembly 400 further includes a housing portion 63 and a folding portion 64. The housing portion 63 is connected to the housing 100. The folding portion 64 is provided on a side of the housing portion 63 along the width direction of the housing 100, and a free end of the folding portion 64 extends along the length direction of the housing 100 toward the second base 51. The folding portion 64, the housing portion 63, and the second base 51 define an accommodation space, and the first drive motor 61 and the second drive motor 62 are provided in the accommodation space. This is advantageous in reducing the intrusion of moisture and dust in the air into the accommodation space, preventing damage to the first drive motor 61 and the second drive motor 62, and extending the service life of the drive assembly 400.

[0124] In some embodiments, as shown in FIGS. 26 and 27 , the second base 51 further includes two end covers 514 and a connecting plate 516. The two end covers 514 are provided at both ends of the second base 51 along the length of the housing 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 provided on the top of the connecting plate 516. As shown in FIG. 28 , the gripping portion 5161 includes a plurality of grooves that are recessed toward the second dust collection box 55 along the height direction of the housing 100. The plurality of grooves are provided on the connecting plate 516 continuously along the length of the housing 100. This provides a convenient grip for the user when installing or removing the self-cleaning assembly 300, improving the efficiency of assembling the self-cleaning assembly 300.

[0125] 26 and 27, the second base 51 further includes a base front cover 513. The base front cover 513 is provided on the front side of the housing 100 and is located below the connecting plate 516. The lower end of the base front cover 513 is detachably connected to the base main body 511A. The upper end of the base front cover 513 is rotatably connected to the base main body 511A.

[0126] The base front cover 513 is configured to open and close the front side of the cleaning cavity 56. This is advantageous for cleaning the third cleaning brush 542 in the cleaning cavity 56 and improving the operating efficiency of the third cleaning brush 542. Furthermore, if a component in the self-cleaning assembly 300 breaks down, maintenance can be performed on the component in the self-cleaning assembly 300 through the base front cover 513, and this is also advantageous for installing and removing components in the self-cleaning assembly 300 (e.g., the fourth reel 53, the third reel 52, and the third cleaning brush 542).

[0127] For example, as the self-cleaning assembly 300 operates for a long period of time, the ability of the third cleaning brush 542 to brush off foreign matter on the filter 210 decreases. When the third cleaning brush 542 needs to be cleaned, the third cleaning brush 542 in the cleaning cavity 56 can be cleaned by opening the base front cover 513.

[0128] 26 , the base front cover 513 includes a rotation shaft 5131. The rotation shafts 5131 are provided on both ends of the base front cover 513 along the longitudinal direction of the housing 100. The base main body 511A further includes a rotation shaft hole, which is provided on the base main body 511A. The rotation shaft 5131 is fitted into and engaged with the rotation shaft hole, thereby realizing a rotational connection between the base front cover 513 and the base main body 511A. In this way, when the base front cover 513 is opened, the lower side of the base front cover 513 is flipped upward, thereby opening the front side of the cleaning cavity 56.

[0129] 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 provided 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, and the one second position limiting portion 546 is provided 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, and the two second position limiting portions 546 are provided at both ends of the fourth mounting portion 5412 along the length direction of the housing 100, respectively.

[0130] 28, the cleaning brush assembly 54 further includes a stopper portion 547. The stopper portion 547 is provided on the inner wall of the cleaning cavity 56.

[0131] The second position limiting portion 546 is configured to abut against the stopper portion 547 to limit the rotation angle of the cleaning brush assembly 54. When the cleaning brush assembly 54 is operated and the second position limiting portion 546 abuts against the stopper portion 547, the third cleaning brush 542 abuts against the third reel 52 and cleans foreign matter on the filter 210 at the abutment. Providing the second position limiting portion 546 and the stopper portion 547 on the cleaning brush assembly 54 is advantageous for limiting the rotation angle of the cleaning brush assembly 54, allowing the third cleaning brush 542 to accurately abut against the third reel 52 under the action of the cleaning brush base 541, thereby cleaning the filter 210 and reducing the possibility of the third cleaning brush 542 being offset when abutting against the filter 210.

[0132] For example, at least one second position limiting portion 546 includes a first position limiting protrusion 5461 and a second position limiting protrusion 5462. The first position limiting protrusion 5461 and the second position limiting protrusion 5462 are provided at ends of the fourth mounting portion 5412 along the length direction of the housing 100, and are provided symmetrically along the radial direction of the fourth mounting portion 5412.

[0133] The second position limiting portion 546 is configured to rotate to the first position, whereby the first position limiting protrusion 5461 abuts against the stopper portion 547 and the third cleaning brush 542 does not contact the third reel 52. Furthermore, the second position limiting portion 546 is configured to rotate to the second position, whereby the second position limiting protrusion 5462 abuts against the stopper portion 547 and the third cleaning brush 542 abuts against the third reel 52.

[0134] For example, when the cleaning brush assembly 54 rotates clockwise and the second position limiting portion 546 rotates to the first position, the first position limiting protrusion 5461 abuts against the stopper portion 547, which limits the second position limiting portion 546 from continuing to rotate, the third cleaning brush 542 does not contact the third reel 52, the first position limiting protrusion 5461 is located below the second position limiting protrusion 5462, and the third cleaning brush 542 is located below the central axis of the cleaning brush base 541.

[0135] When the cleaning brush assembly 54 rotates counterclockwise and the second position limiting portion 546 rotates to the second position, the second position limiting protrusion 5462 abuts against the stopper portion 547, which limits the second position limiting portion 546 from continuing to rotate, and the third cleaning brush 542 abuts against the third reel 52 and cleans foreign matter on the filter 210 at the abutment.

[0136] The abutment between the second position limiting protrusion 5462 and the stopper portion 547 is advantageous in that it abuts the third cleaning brush 542 against the third reel 52, thereby preventing the third cleaning brush 542 from shifting position with the filter 210 under the action of inertia, thereby reducing the cleaning effect of the third cleaning brush 542.

[0137] 28 , the stopper portion 547 includes a first stopper surface 5471 and a second stopper surface 5472. When the second position limiting portion 546 rotates to the first position, the first position limiting protrusion 5461 abuts against the first stopper surface 5471, and the third cleaning brush 542 does not contact the third reel 52. When the second position limiting portion 546 rotates to the second position, the second position limiting protrusion 5462 abuts against the second stopper surface 5472, and the third cleaning brush 542 abuts against the third reel 52 to brush off foreign matter on the filter 210.

[0138] One end of first stopper surface 5471 is connected to one end of second stopper surface 5472, and first stopper surface 5471 is located below second stopper surface 5472. The other end of first stopper surface 5471 extends obliquely downward along the thickness direction of housing 100 in a direction approaching sixth plate 13. The other end of second stopper surface 5472 extends obliquely upward along the thickness direction of housing 100 in a direction approaching sixth plate 13.

[0139] For example, when the cleaning brush base 541 rotates clockwise and the second position limiter 546 rotates to the first position, the first position limiter protrusion 5461 abuts against the first stopper surface 5471. The first stopper surface 5471 limits the first position limiter protrusion 5461 from continuing to rotate, the third cleaning brush 542 does not contact the third reel 52, the first position limiter protrusion 5461 is located below the second position limiter protrusion 5462, and the third cleaning brush 542 is located below the central axis of the cleaning brush base 541.

[0140] As the cleaning brush base 541 rotates counterclockwise and the second position limiting part 546 rotates from the first position to the second position, the first position limiting protrusion 5461 changes from a state of abutting against the first stopper surface 5471 to a state of being released, and then the second position limiting protrusion 5462 abuts against the second stopper surface 5472, causing the third cleaning brush 542 to abut against the third reel 52 and clean the filter 210.

[0141] In this way, providing the stopper portion 547 with the first stopper surface 5471 and the second stopper surface 5472 is advantageous for the abutment between the first position limiting protrusion 5461 and the second position limiting protrusion 5462 and the stopper portion 547, improves the stability and reliability of the abutment between the second position limiting portion 546 and the stopper portion 547, and reduces rotational error of the cleaning brush assembly 54.

[0142] 24, 26, and 27, the self-cleaning assembly 300 further includes a cleaning member 59. The cleaning member 59 is provided on a side of the base front cover 513 that is closer to the cleaning cavity 56. For example, the cleaning member 59 and the base front cover 513 may be connected by an adhesive or an engaging structure. The cleaning member 59 is provided on a side wall of the cleaning cavity 56 that faces the stopper portion 547. The cleaning member 59 is configured to clean foreign matter on the third cleaning brush 542 when the second position limiting portion 546 rotates back and forth between the first position and the second position.

[0143] For example, the stopper portion 547 is provided on the rear wall of the cleaning cavity 56, and the cleaning member 59 is provided on the front wall of the cleaning cavity 56. When there is a lot of foreign matter on the filter 210 and the filter 210 needs to be cleaned, the third cleaning brush 542 comes into contact with the third reel 52 and cleans the filter 210 while the second position limiting portion 546 is rotating from the first position to the second position. The cleaning member 59 comes into contact with the third cleaning brush 542 and cleans the foreign matter on the third cleaning brush 542, thereby keeping the third cleaning brush 542 relatively clean.

[0144] In this way, when the second position limiting protrusion 5462 abuts against the stopper portion 547 again, the third cleaning brush 542 cleaned by the cleaning material 59 can better clean foreign matter on the filter 210, thereby improving the cleaning effect of the cleaning brush assembly 54 on the filter 210.

[0145] 24 and 26 , the base front cover 513 further includes a deflecting section 5132 and an extending section 5133. The deflecting section 5132 is located between the two end covers 514, and the deflecting section 5132 protrudes in a direction away from the central axis of the third cleaning brush 542. The rotation shaft 5131 is connected to the side of the deflecting section 5132 that is away from the third cleaning brush 542. The extending section 5133 extends along the height direction of the housing 100. The upper end of the extending section 5133 is connected to the lower end of the deflecting section 5132, and the lower end of the extending section 5133 fits into and engages with the second dust collection box 55.

[0146] The base front cover 513 is part of the cleaning cavity 56 and is configured to form a seal with the cleaning cavity 56 on the front side thereof. The clearance section 5132 is located above the extension section 5133 and faces the third cleaning brush 542 in the thickness direction of the housing 100. The rotation shaft 5131 is provided on the side of the clearance section 5132 that faces away from the third cleaning brush 542. When the base front cover 513 is fitted and engaged with the base main body 511A, one end of the extension section 5133 that faces away from the clearance section 5132 in the height direction of the housing 100 fits and engages with the upper part of the second dust collection box 55. That is, when the second dust collection box 55 is assembled to the base main body 511A, the upper part of the second dust collection box 55 fits and engages with the base front cover 513, thereby forming a seal with the cleaning cavity 56 on the front and lower sides of the base main body 511A.

[0147] 24, the clearance section 5132 is formed in an arc shape that protrudes away from the central axis of the third cleaning brush 542, and the center line of the clearance section 5132 overlaps with the central axis of the third cleaning brush 542. This is advantageous for avoiding interference between the base front cover 513 and the third cleaning brush 542 when the base front cover 513 is mated and engaged with the base main body 511A. This is also advantageous for increasing the space utilization rate of the second base 51, limiting the gap between the base front cover 513 and the third cleaning brush 542, and allowing dust and particulate matter generated during the rotation of the third cleaning brush 542 to fall intensively along the clearance section 5132 into the second dust collection box 55, thereby reducing the amount of dust flying in the cleaning cavity 56 and reducing the volume of the self-cleaning assembly 300.

[0148] 24, 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 disposed behind the cleaning cavity 56 along the thickness direction of the housing 100. The base rear cover 515 faces the base front cover 513 and is rotatably connected to the base main body 511A. The base rear cover 515 includes a connecting groove, which is provided on the base rear cover 515. The side of the connecting groove facing the cleaning brush assembly 54 is open. A sealant is provided within the connecting groove.

[0149] When the base rear cover 515 is closed to close the rear side of the cleaning cavity 56, the sealant is configured to seal the gap between the base rear cover 515 and the third reel 52. When the base rear cover 515 is opened to open the rear side of the cleaning cavity 56, the sealant and the third reel 52 are separated from each other. That is, when the base rear cover 515 is connected to the base main body 511A, the connecting groove is provided on the side of the base main body 511A facing the third reel 52, and the sealant is provided in the connecting groove and is removably connected to the connecting groove.

[0150] The rear side of the sealing material is located within the connecting groove, and the front side of the sealing material extends from the connecting groove and abuts against the third reel 52. For example, the sealing material is a sponge foamed from polyurethane having high resilience.

[0151] In this way, providing the connecting groove in the base rear cover 515 and providing the sealing material in the connecting groove allows the fourth opening 563 of the cleaning cavity 56 to abut against the third reel 52 via the sealing material, forming a seal for the fourth opening 563, which is advantageous in preventing dust in the cleaning cavity 56 from flowing into the second fan assembly 30 or the indoor heat exchanger 20, and extends the service life of the indoor unit 100A.

[0152] 24 , the width of the fifth opening 564 slopes downward along the height of the housing 100, i.e., the cross-sectional area of ​​the fifth opening 564 decreases downward along the height of the housing 100. The fifth opening 564 is located at the bottom of the cleaning cavity 56. The opening of the fifth opening 564 is larger at the end closer to the cleaning cavity 56 and smaller at the end closer to the second dust collection box 55.

[0153] When the third cleaning brush 542 cleans foreign matter on the filter 210, centrifugal force generated when the third cleaning brush 542 rotates may cause some of the foreign matter to scatter onto the inner wall of the cleaning cavity 56. Making the diameter of the fifth opening 564 smaller from top to bottom along the height direction of the housing 100 is advantageous in allowing dust to flow into the second dust collection box 55 and preventing dust from accumulating due to dead ends on the side walls of the cleaning cavity 56.

[0154] 24 , the cleaning cavity 56 further includes a first extension section 561 and a second extension section 562. The first extension section 561 and the second extension section 562 are provided in a lower portion of the cleaning cavity 56. The first extension section 561 is connected to the front wall of the cleaning cavity 56, and the second extension section 562 is connected to the rear wall of the cleaning cavity 56, and a fifth opening 564 is defined between the first extension section 561 and the second extension section 564. The distance between the first extension section 561 and the second extension section 562 decreases from top to bottom along the height direction of the housing 100.

[0155] For example, one end of the first extending section 561 is connected to the bottom of the front wall of the cleaning cavity 56 and is located below the third cleaning brush 542. The other end of the first extending section 561 extends obliquely toward the second dust collecting box 55. One end of the second extending section 562 is connected to the bottom of the rear wall of the cleaning cavity 56 and is located below the third cleaning brush 542. The other end of the second extending section 562 extends obliquely toward the second dust collecting box 55.

[0156] The first extension section 561 and the second extension section 562 extend obliquely toward each other. That is, the other ends of the first extension section 561 and the second extension section 562 simultaneously extend obliquely toward the center of the second dust collection box 55, and the first extension section 561 and the second extension section 562 are configured as a funnel-shaped fifth opening 564.

[0157] In addition, the other ends of the first extension section 561 and the second extension section 562 are flush with the bottom of the cleaning cavity 56, thereby preventing the first extension section 561 and the second extension section 562 from interfering with the installation of the second dust collection box 55.

[0158] In this way, the distance between the first extension section 561 and the second extension section 562 decreases from top to bottom along the height direction of the housing 100, which is advantageous for foreign matter brushed off by the third cleaning brush 542 to fall into the second dust collection box 55, reducing the possibility of the foreign matter accumulating in the cleaning cavity 56 or the fifth opening 564 and reducing the risk of the foreign matter falling in areas other than the second dust collection box 55. Furthermore, the entire first extension section 561 and the second extension section 562 are located below the third cleaning brush 542, which is advantageous for guiding the foreign matter cleaned from the filter 210 to fall into the second dust collection box 55 and preventing the foreign matter from accumulating in the cleaning cavity 56.

[0159] 24 and 26 , the self-cleaning assembly 300 further includes an insert 58. The insert 58 is provided on a connecting plate 516 and may move along the length of the housing 100 relative to the connecting plate 516. When the self-cleaning assembly 300 is attached to the housing 100, the insert 58 moves along the length of the housing 100 until a portion of the insert 58 extends beyond the end of the second base 51 and engages with the housing 100, thereby achieving attachment of the self-cleaning assembly 300. When it is necessary to remove the self-cleaning assembly 300, the insert 58 is moved such that the insert 58 moves along the length of the housing 100 toward the center of the second base 51, thereby separating the insert 58 from the housing 100 and achieving removal of the self-cleaning assembly 300 from the housing 100.

[0160] Providing the insert 58 on the self-cleaning assembly 300 is advantageous for attaching and detaching the self-cleaning assembly 300, and improves the efficiency of attaching and detaching the self-cleaning assembly 300.

[0161] 37, the controller 80 refers to a device that can generate operation control signals according to command operation codes and timing signals, and instruct the air conditioner 1 to execute control commands. In some embodiments, the controller 80 is coupled to the outdoor unit 900, the indoor unit 100A, the housing 100, the filter 210, and the self-cleaning assembly 300, and is configured to control the operation of each component, operate each component in the air conditioner 1, and realize each preset function of the air conditioner 1.

[0162] For example, when the controller 80 determines that the air conditioner 1 is powered on and is running, it is configured to obtain the continuous stop time within the current cleaning cycle of the air conditioner 1. When it determines that the continuous stop time is greater than a preset first set time threshold, it is configured to determine whether a first set condition is met. When it determines that the first set condition is met, it is configured to control the air conditioner 1 to stop and control the self-cleaning assembly 300 to perform the automatic cleaning function. After the execution of the automatic cleaning function is completed, it is configured to control the air conditioner 1 to enter the next cleaning cycle.

[0163] In some embodiments of the present disclosure, a control method for the air conditioner 1 is provided, and the control method is applied to the controller 80. As shown in Fig. 29, in some embodiments, the control method includes steps S10 to S15.

[0164] S10: The air conditioner 1 is powered on, and is started up and operated.

[0165] S11: The continuous stop time in the current cleaning cycle of the air conditioner 1 is acquired.

[0166] In some embodiments, one cleaning cycle is the time required for the self-cleaning assembly 300 to perform two consecutive automatic cleaning functions.

[0167] S12, continuous stop time t off is greater than a preset first set time threshold t1, and if "YES", S13 is executed, and if "NO", S11 is executed subsequently.

[0168] After the air conditioner 1 is turned on and starts up and operates, it enters the first cleaning cycle, and the controller 80 acquires and compiles statistics on the operating status information of the air conditioner 1, and determines whether the operating status information satisfies the first set condition.

[0169] In some embodiments, the operating status information of the air conditioner 1 is the continuous operating time t on , continuous stop time t off , cumulative operation time t on add and cumulative stop time t off add However, the information may further include information such as the operating frequency and operating rotation speed of the compressor of the air conditioner 1, or the operating rotation speed of the indoor fan.

[0170] In addition, the continuous operation time t on is the single continuous operation time with the smallest difference from the current time, and the continuous stop time t off is the continuous shutdown time with the smallest difference from the current time, and the cumulative operation time t on add is the cumulative time that the cleaning cycle has been started and running within the current cleaning cycle.

[0171] For example, after the air conditioner 1 enters the current cleaning cycle, it operates continuously for 8 hours, stops for 3 hours under the control of the user's remote control, and then starts and operates again for 12 hours. In this case, the continuous operation time t on is 12 hours, and the continuous stop time t off is 3 hours, and the cumulative operating time t on add is 8+12=20 hours.

[0172] In some embodiments, the operating status information of the air conditioner 1 is the continuous stop time t off In this case, a first set time threshold t1 is set in advance. The first set time threshold t1 is used to characterize the time during which the air conditioner 1 is in a stopped state.

[0173] Continuous stop time t off is greater than the first set time threshold t1, that is, t off If it is determined that t1 is greater than t2 , this indicates that the air conditioner 1 has been in a stopped state for too long, and in this case the controller 80 determines that the air conditioner 1 satisfies the self-cleaning condition.

[0174] The first set time threshold t1 is a preset value. In some embodiments, the first set time threshold t1 is greater than 72 hours. For example, the first set time threshold t1 may be set to 7 days, i.e., t1 = 7 × 24 hours = 168 hours.

[0175] S13: Determine whether the first set condition is met. If "YES", execute S14; if "NO", continue to execute S13.

[0176] The first set condition is a preset self-cleaning condition. If it is determined that the first set condition is not met, the air conditioner 1 is controlled so that the operation mode is not changed, and the self-cleaning assembly 300 is controlled so as to be in a closed state.

[0177] In some embodiments, as shown in FIG. 30, the first setting condition is the continuous operation time t on is greater than the second set time threshold t2, that is, t on >t2. In this case, S13 includes S131.

[0178] S131, continuous operation time t on is greater than the second set time threshold t2, and if "YES", S14 is executed, and if "NO", S131 is executed next.

[0179] The second preset time threshold t2 is a preset value. In some embodiments, the second preset time threshold t2 may be in the range of [5 min, 60 min], for example, t2 may be set to 15 min.

[0180] In some embodiments, S13 includes S132 to S1322, as shown in FIG.

[0181] S132: Determine the operating mode of the air conditioner 1. If it is determined that the air conditioner 1 is operating in cooling mode, execute S1321; if it is determined that the air conditioner 1 is operating in heating mode, execute S1322.

[0182] In S1321, it is determined whether the difference between the first target indoor temperature T2 and the indoor temperature T1 is greater than the set temperature difference ΔT1. If "YES", S14 is executed, and if "NO", S1321 is executed again.

[0183] When the air conditioner 1 is operating in cooling mode, the first setting condition includes that the current indoor temperature T1 is lower than a predetermined first target indoor temperature T2, and the difference between the first target indoor temperature T2 and the indoor temperature T1 is greater than the set temperature difference ΔT1, i.e., T2-T1>ΔT1 is satisfied.

[0184] In S1322, it is determined whether the difference between the room temperature T1 and the second target room temperature T3 is greater than the set temperature difference ΔT1. If "YES", S14 is executed, and if "NO", S1322 is executed again.

[0185] In some other embodiments, as shown in FIG. 31, when the air conditioner 1 is operating in heating mode, the first setting condition includes that the current indoor temperature T1 is greater than the preset second target indoor temperature T3, and the difference between the indoor temperature T1 and the second target indoor temperature T3 is greater than the set temperature difference ΔT1, i.e., T1-T3>ΔT1 is satisfied.

[0186] The set temperature difference ΔT1 is a value set in advance, and ΔT1 > 0. For example, ΔT1 may be set to 2°C.

[0187] As shown in FIG. 32, S13 includes S133 to S1332.

[0188] S133: Determine the operating mode of the air conditioner 1. If it is determined that the air conditioner 1 is operating in cooling mode, execute S1331; if it is determined that the air conditioner 1 is operating in heating mode, execute S1332.

[0189] S1331, whether the current indoor temperature T1 is lower than the preset first default indoor temperature T4, and whether the continuous operation time ton Determine whether it is greater than a preset third setting time threshold t3. If it is "YES", execute S14. If it is "NO", continue to execute S1331.

[0190] When the air conditioner 1 is operating in the cooling mode, the first setting condition is that the current indoor temperature T1 is less than a preset first default indoor temperature T4, that is, it satisfies T1 < T4, and the continuous operation time t of the air conditioner 1 on is greater than a preset third setting time threshold t3, that is, t on > t3 is satisfied.

[0191] S1332, determine whether the current indoor temperature T1 is greater than a preset second default indoor temperature T5, and whether the continuous operation time t of the air conditioner 1 on is greater than a preset third setting time threshold t3.

[0192] When the air conditioner 1 is operating in the heating mode, the first setting condition is that the current indoor temperature T1 is greater than a preset second default indoor temperature T5, that is, it satisfies T1 > T5, and the continuous operation time t of the air conditioner 1 on is greater than a preset third setting time threshold t3, that is, t on > t3 is satisfied.

[0193] Note that the first default indoor temperature T4 and the second default indoor temperature T5 are environmental temperature values required by the user, and the first default indoor temperature T4 and the second default indoor temperature T5 may be set to T4 = T5 = 24°C.

[0194] In this way, before stopping the operation of the air conditioner 1 and starting the self-cleaning assembly 300 to control the self-cleaning of the filter 210, the indoor temperature can reach the preset required temperature.

[0195] S14, control the air conditioner 1 to stop, and control the self-cleaning assembly 300 to execute the automatic cleaning function.

[0196] If the controller 80 determines that the air conditioner 1 satisfies the first set condition, it controls the air conditioner 1 to stop operating, activates the self-cleaning assembly 300 to perform the automatic cleaning function, and controls the filter 210 to self-clean.

[0197] S15: After the execution of the automatic cleaning function is completed, the air conditioner 1 is controlled to enter the next cleaning cycle.

[0198] After the controller 80 obtains that the execution of the automatic cleaning function has been completed, the controller 80 restarts the air conditioner 1 and controls it to continue operating according to the operating state before cleaning, and the controller 80 clears the operating state information of the current cycle and proceeds to statistics and control of the next cleaning cycle.

[0199] It should be noted that the time required to perform the different cleaning cycles may be the same or different.

[0200] In this way, according to the air conditioner 1 according to some embodiments of the present disclosure, the continuous stop time t off By automatically obtaining the filter 210 status and determining whether the air conditioner 1 satisfies the self-cleaning conditions, self-cleaning of the filter 210 is realized, which is advantageous in avoiding the user having to manually remove and clean the filter 210 and improving the cleaning efficiency of the filter 210. Furthermore, it is possible to avoid the problem of dust accumulating on the filter 210 due to the user not cleaning the filter 210 in a timely manner, which affects the volume of air blown out by the air conditioner 1 and ultimately affects the operating performance of the air conditioner 1.

[0201] In addition, if the air conditioner 1 has been started and operated continuously for a certain period of time and the filter 210 has not been cleaned, after the user restarts the air conditioner 1, the air conditioner 1 will operate until the first set condition is met, that is, first cooling or heating the room, and after the room temperature reaches a preset temperature, the air conditioner 1 will be controlled to stop and the self-cleaning assembly 300 will be activated to self-clean the filter 210, thereby minimizing the impact on the demand for indoor air temperature.

[0202] In some embodiments, after S12 and before S13, the controller is configured to perform at least one of controlling the compressor to operate at a set operating frequency and controlling the outdoor fan to operate at a set operating speed.

[0203] For example, the set operating frequency of the compressor may be its maximum operating frequency, and the set operating rotation speed of the outdoor fan may be its maximum operating rotation speed.

[0204] In this way, the continuous stop time t off becomes greater than the first set time threshold t1, the user's cooling or heating needs can be met quickly, and the subsequent shutdown of the air conditioner 1 can avoid the problem of a large difference between the indoor temperature and the target temperature set by the user when the self-cleaning assembly 300 performs the automatic cleaning function.

[0205] In some embodiments, as shown in FIG. 33, S10 can include S101 and S102.

[0206] S101: The air conditioner 1 is powered on.

[0207] S102: The air conditioner 1 is started and operated.

[0208] In some embodiments, S14 may include S141 and S142.

[0209] S141: The air conditioner 1 is controlled to stop.

[0210] S142, control the self-cleaning assembly 300 to perform the automatic cleaning function.

[0211] In some embodiments, the operating status information of the air conditioner 1 acquired by the controller 80 is the cumulative operating time t on add If so, after S101, the control method further includes S21 to S23.

[0212] S21: The accumulated operating time of the air conditioner 1 within the current cleaning cycle is acquired.

[0213] S22, cumulative operation time t on add is greater than the fourth set time threshold t4 and less than the fifth set time threshold t5, and if the answer is "YES", S23 is executed, and if the answer is "NO", S21 is executed again.

[0214] In S23, it is determined whether the air conditioner 1 is in a stopped state, and if the result is "YES", S142 is executed, and if the result is "NO", S21 is subsequently executed.

[0215] The fourth set time threshold t4 and the fifth set time threshold t5 are preset values, for example, in the range of [12 h, 72 h], and the fifth set time threshold t5 is greater than the fourth set time threshold t4.

[0216] For example, if the fourth set time threshold t4 is set to 24 hours and the fifth set time threshold t5 is set to 32 hours, and within the current cleaning cycle, the user controls the start of the air conditioner 1, and the air conditioner 1 operates continuously for 8 hours, then stops operating for n hours, then restarts and operates continuously for 12 hours, then stops operating for n hours, then restarts and operates continuously for 6 hours, and then shuts down. In this case, the cumulative operating time t obtained by the controller 80 through statistics is on add = 8 hours + 12 hours + 6 hours = 26 hours, and t4 <t on addSince <t5 is satisfied and the air conditioner 1 is currently in a stopped state, it is determined that the preset self-cleaning condition is satisfied, and the controller 80 controls the self-cleaning assembly 300 to start and operate to self-clean the filter 210. Here, n > 0.

[0217] In some embodiments, as shown in FIG. 34, when executing S22, the cumulative operation time t on add is determined to be outside the range of (t4, t5), the control method further includes S31.

[0218] S31, determine whether the cumulative operation time t on add is greater than or equal to the fifth set time threshold t5. If "YES", execute S141. If "NO", continue to execute S21.

[0219] For example, the fifth set time threshold t5 is set to 32 hours. During the current cleaning cycle, the user controls the startup of the air conditioner 1, and the air conditioner 1 operates continuously for 8 hours, then stops operating for n hours, then restarts and operates continuously for 12 hours, then stops operating for n hours, and then restarts and operates continuously for more than 12 hours. In this case, the cumulative operation time t on add = 8 hours + 12 hours + 12 hours = 32 hours obtained by the controller 80, and t on add ≧t5 is satisfied, so it is determined that the preset self-cleaning condition is satisfied, and the self-cleaning assembly 300 is controlled to start and operate to self-clean the filter 210.

[0220] In this way, it can be ensured that the filter 210 is cleaned under the condition that the cumulative operation time of the air conditioner 1 satisfies t4 < t on add <t5 and the air conditioner 1 is shut down, and the cleanliness of the filter 210 can be guaranteed.

[0221] In some embodiments, as shown in FIG. 35, the operation state information of the air conditioner 1 obtained by the controller 80 is the continuous operation time t onIf so, after S101, the control method further includes S41 to S42.

[0222] S41, continuous operation time t in the current cleaning cycle of the air conditioner 1 on Get.

[0223] S42, continuous operation time t on is greater than a sixth preset time threshold t6, and if "YES", S141 is executed, and if "NO", S41 is executed again.

[0224] The sixth set time threshold t6 is a preset value. The sixth set time threshold t6 is greater than the second set time threshold t2 and the third set time threshold t3, i.e., t6>t2 and t6>t3. The value of the sixth set time threshold t6 may be 12 to 72 hours.

[0225] For example, the sixth set time threshold t6 is set to 24 hours. In the current cleaning cycle, the user controls the activation of the air conditioner 1, and the air conditioner 1 operates continuously for 25 hours. The controller 80 calculates the current continuous operation time t on = 25 hours, which is greater than the sixth preset time threshold t6, it is determined that the preset self-cleaning condition is met, and the self-cleaning assembly 300 is activated and operated to control the filter 210 to self-clean.

[0226] If the air conditioner 1 then operates continuously for 24 hours again after startup, the air conditioner 1 is controlled to stop again, the self-cleaning assembly 300 is controlled to start up and self-clean the filter 210, and after the automatic cleaning function has finished executing, the air conditioner 1 is restarted and operated, thereby controlling the air conditioner 1 to return to the operating state before cleaning.

[0227] As shown in FIG. 36, before controlling the self-cleaning assembly 300 to perform the automatic cleaning function (ie, step S14), the control method further includes S61.

[0228] S61: Determine whether or not the second set condition for permitting execution of the automatic cleaning function is met. If "YES", execute step S14; if "NO", continue to execute step S61.

[0229] In some embodiments, the second set condition includes at least one of determining whether a shutdown control command is received, determining whether the current time is outside a time zone set by a user, and determining whether the current indoor light intensity is greater than a set light intensity threshold.

[0230] For example, when it is determined that the first set condition is met, if it is determined that the air conditioner 1 is in an activated and operating state, but the controller 80 does not receive a shutdown control command input by the user, the current operating state of the air conditioner 1 is maintained unchanged, and the self-cleaning assembly 300 is maintained in a closed state. When it is determined that a shutdown control command input by the user is received, the controller 80 controls the air conditioner 1 to stop, and controls the self-cleaning assembly 300 to activate and operate and self-clean the filter 210.

[0231] Furthermore, if the user determines that the current time is outside the set time zone, for example, if the user sets the time zone to 23:00 to 7:00 and determines that the current time is within the time zone of 23:00 to 7:00, the original state of the air conditioner 1 is maintained unchanged and the self-cleaning assembly 300 is kept closed to prevent noise generated during self-cleaning from affecting the user's needs. If the time reaches 7:00 and the air conditioner 1 is determined to be in the activated state, the air conditioner 1 is controlled to stop, and the self-cleaning assembly 300 is controlled to start up and operate to self-clean the filter 210.

[0232] 37, the air conditioner 1 further includes a light intensity detection assembly 90. The light intensity detection assembly 90 is provided on the housing of the air conditioner 1 and is configured to detect the current indoor light intensity. The light intensity detection assembly 90 is coupled to the controller 80. If it is determined that the current indoor light intensity is greater than the set light intensity threshold, this indicates that the current indoor light is strong. If the air conditioner 1 is in an activated state, the air conditioner 1 is controlled to stop, and the self-cleaning assembly 300 is controlled to activate and operate to self-clean the filter 210. If it is determined that the current indoor light intensity is equal to or less than the set light intensity threshold, this indicates that the current indoor light is weak. In this case, the current operating state of the air conditioner 1 is maintained unchanged, and the self-cleaning assembly 300 is maintained in a closed state.

[0233] In this way, after satisfying the first set condition, the air conditioner 1 must also satisfy the second set condition before activating the self-cleaning assembly 300 to clean the filter 210, thereby meeting the user's daily needs.

[0234] Those skilled in the art will appreciate that the scope of the present disclosure is not limited to the particular embodiments described above, and that modifications and substitutions can be made to specific elements of the embodiments without departing from the spirit of the present application. The scope of the present disclosure is limited by the claims.

Claims

1. An indoor unit of an air conditioner, a housing in which an intake port is installed; a filtration assembly including a filter removably mounted within the housing and covering the inlet; a first cleaning brush configured to remove foreign matter adhering to the filter; a first reel connected to one end of the filter; a second reel connected to the other end of the filter. a self-cleaning assembly; a transmission assembly connected to the first reel and the second reel; a drive assembly connected to the transmission assembly and configured to rotate the first reel and the second reel via the transmission assembly; Air conditioner indoor unit.

2. The drive assembly includes: Including the drive gear, The transmission assembly includes: a first driven gear attached to one end of the first reel and meshing with the drive gear; a second driven gear attached to one end of the second reel, The first driven gear rotates the second driven gear. The indoor unit of an air conditioner according to claim 1.

3. The transmission assembly further comprises: a third driven gear attached to one end of the first cleaning brush; The first cleaning brush is configured to rotate in a direction opposite to the direction of movement of the filter. The indoor unit of an air conditioner according to claim 2.

4. The transmission assembly further comprises: an intermediate gear that meshes with the third driven gear and the first driven gear; The indoor unit of an air conditioner according to claim 3.

5. The self-cleaning assembly further comprises: a first bracket configured to carry the filter; the filter is mounted on the first bracket and is movable relative to the first bracket; The indoor unit of an air conditioner according to claim 1.

6. The self-cleaning assembly further comprises: Includes base, the first reel and the second reel each extend along the length direction of the indoor unit and are rotatably installed on the base, the base and the housing are detachably connected, and the first bracket is connected to the base; The side of the indoor unit facing a user is the front side, and the opposite side is the rear side, and the first bracket extends along the front-to-rear direction of the indoor unit. The indoor unit of an air conditioner according to claim 5.

7. The base is the second mounting portion connected to the first bracket; When a user needs to clean the filtration assembly and the self-cleaning assembly, the first bracket and the filter are removed by removing the second mounting portion from the housing. The indoor unit of an air conditioner according to claim 6.

8. moreover, a base including a second mounting portion recessed from one side along a length direction of the indoor unit toward the other side to form a second cavity, the second mounting portion being configured to install the transmission assembly in the second cavity; The indoor unit of an air conditioner according to claim 1.

9. the second cavity has a notched opening; The transmission assembly further comprises: a first driven gear having a portion protruding from the notch; The indoor unit of an air conditioner according to claim 8.

10. The side of the indoor unit facing the user is the front side, and the opposite side is the rear side, The notch faces the rear of the indoor unit. The indoor unit of an air conditioner according to claim 9.

11. a first cavity is defined within the second mounting portion, and the first cleaning brush, the first reel, and the second reel are rotatably mounted within the first cavity; The indoor unit of an air conditioner according to claim 8.

12. a first opening communicating with the first cavity is provided on the bottom side of the second cavity, a first prism is provided in the center of the first driven gear, and a first hole matching the first prism is provided on the end of the first reel; the first prism passes through the first opening and is inserted into the first hole; The indoor unit of an air conditioner according to claim 11.

13. The base further comprises: two end caps provided at both ends of the base housing along the longitudinal direction, The indoor unit of an air conditioner according to claim 8.

14. The first reel is a first portion and a second portion that are removably connected; The second reel is a third portion and a fourth portion that are removably connected; One end of the filter is sandwiched between the first part and the second part, and the other end of the filter is sandwiched between the third part and the fourth part. The indoor unit of an air conditioner according to claim 1.

15. moreover, a first dust collection box located below the first cleaning brush and configured to collect foreign matter removed from the filter; The indoor unit of an air conditioner according to claim 1.

16. The self-cleaning assembly further comprises: a second cleaning brush that is installed in the first dust collection box and configured to brush off foreign matter adhering to the first cleaning brush into the first dust collection box; The indoor unit of an air conditioner according to claim 16.

17. the transmission assembly is mounted on the base, the drive assembly is mounted on the housing, and the drive assembly and the transmission assembly are detachably connected to each other; The indoor unit of an air conditioner according to claim 1.

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