Air conditioner indoor unit

Abstract

An air conditioner indoor unit is provided. The air conditioner indoor unit includes a housing, a filter, and a self-cleaning assembly. The self-cleaning assembly includes a base, a first reel, a second reel, a cleaning brush assembly, a cleaning component, and at least one position limiting component. The cleaning brush assembly includes a cleaning brush base, a cleaning brush, and an elastic material. The cleaning brush is configured to clean foreign matter on the filter during a process in which the filter is wound around the first reel or the second reel, or during a process in which the filter is released from the first reel or the second reel. The at least one position limiting component is provided on an inner wall of the base, and is located on at least one of a side closer to the filter and a side farther from the filter of the cleaning component. The position limiting component is configured to bump against the cleaning brush and slowly elastically deform the elastic material when the elastic material tends to be compressed or stretched during a process in which the cleaning brush base rotates.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims priority based on the PCT international patent application with application number PCT / CN2023 / 096723 filed on May 29, 2023, the PCT international patent application with application number PCT / CN2023 / 105581 filed on July 3, 2023, the Chinese patent application with application number 202321340922.8 filed on May 29, 2023, and the Chinese patent application with application number 202321430623.3 filed on June 6, 2023. All of their disclosure contents are incorporated herein by reference. The PCT international patent application with the above - mentioned application number PCT / CN2023 / 096723 、 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. The PCT international patent application with the above - mentioned application number PCT / CN2023 / 105581 claims priority based on the Chinese patent application with application number 202321340922.8 filed on May 29, 2023.

[0002] This disclosure relates to the field of air - conditioning technology, and particularly to an indoor unit of an air conditioner.

Background Art

[0003] In family life, air conditioners have become one of the essential household appliances for each family. The indoor unit of an air conditioner is installed indoors as part of the air conditioner and is used to raise or lower the indoor temperature by exchanging heat with the indoor air.

Summary of the Invention

Means for Solving the Problems

[0004] In one aspect, an indoor unit of an air conditioner is provided. The indoor unit of the air conditioner includes a housing, a filter, and a self-cleaning assembly. The housing has a suction port and a blowout port. The filter is configured to cover the suction port and filter foreign substances in indoor air. The self-cleaning assembly is configured to remove foreign substances on the filter. The self-cleaning assembly includes a base, a first reel, a second reel, a cleaning brush assembly, a cleaning component, and at least one position-limiting component. The base is connected to the housing. The first reel is rotatably connected to the base and connected to one end of the filter. The second reel is rotatably connected to the base and connected to the other end of the filter. The cleaning brush assembly is installed in the base and is located on the side of the second reel away from the filter. The cleaning brush assembly includes a cleaning brush base, a cleaning brush, and an elastic material. The cleaning brush base is rotatably connected to the base. The cleaning brush is movably installed on the cleaning brush base and abuts against a part of the filter. The cleaning brush is configured to clean foreign substances on the filter in the process of the filter being wound around the first reel or the second reel or in the process of the filter being released from the first reel or the second reel. The elastic material is provided between the cleaning brush base and the cleaning brush. The cleaning component is provided on the inner wall of the base and is located on one side of the cleaning brush assembly. The cleaning component is configured to clean foreign substances on the cleaning brush in the process of the cleaning brush base rotating. The at least one position-limiting component is provided on the inner wall of the base and is located on at least one of the side of the cleaning component close to the filter and the side away from the filter. The position-limiting component is configured to abut against the cleaning brush to slowly elastically deform the elastic material when there is a tendency for the elastic material to be compressed or pulled in the process of the cleaning brush base rotating.

Brief Description of the Drawings

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Mode for Carrying Out the Invention

[0006] Hereinafter, with reference to the drawings, some embodiments of the present disclosure will be clearly and completely described. Of course, the embodiments described herein are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments conceivable to those skilled in the art shall be included in the scope of the present disclosure.

[0007] In this specification, the use of “apply to...” or “be arranged to...” means open and inclusive language and does not exclude an apparatus that is applied or arranged to perform additional tasks or steps.

[0008] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings and is for the convenience of the description of this application or to simplify the description, and does not indicate or imply that the device or element mentioned needs to have a specific orientation and be structured or operated in a specific orientation. Therefore, it should not be understood as limiting this application.

[0009] Hereinafter, for the convenience of description, unless otherwise specified, the expressions of the upward, downward, leftward, rightward, frontward, and rearward directions in this disclosure are based on the state during the operation of the indoor unit of the air conditioner. When the indoor unit of the air conditioner 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 of the air conditioner is the vertical direction. The length direction of the indoor unit of the air conditioner is the left-right direction, and the thickness direction of the indoor unit of the air conditioner is the front-rear direction.

[0010] With the popularization of air conditioners, the requirements of users for air conditioners are also increasing. The indoor unit of an air conditioner includes a suction port and an air outlet. A filter is installed at the suction port to filter the air entering the indoor unit of the air conditioner and prevent foreign matters such as dust in the air from entering the indoor unit of the air conditioner. After the indoor unit of the air conditioner has been operating for a certain period of time, there may be too many foreign matters such as dust adhering to the filter, blocking a part of the filter, reducing the suction air volume, and potentially lowering the cooling efficiency or heating efficiency of the air conditioner.

[0011] Generally, a roller brush is installed inside the indoor unit of an air conditioner. The roller brush removes foreign matter attached to the filter, enables the filter to maintain a high filtering capacity, and maintains the cooling efficiency or heating efficiency of the indoor unit of the air conditioner. When the indoor unit of the air conditioner operates for a certain period of time, the foreign matter attached to the filter increases, and there is a need to remove the filter assembly and clean the structures such as the filter and the roller brush in the filter assembly. In the process of removing the filter assembly, since a drive motor for driving the filter to move relative to the roller brush is connected to the filter, it is necessary to remove the drive motor before removing the filter assembly. However, when removing the filter assembly, there is a potential safety hazard of electric shock due to contact with the drive motor. Furthermore, since the filter assembly is not easily detachable, the assembly efficiency of the indoor unit of the air conditioner is low, which is disadvantageous for the user to clean the filter assembly.

[0012] Some embodiments of the present disclosure provide an indoor unit 1000 of an air conditioner. As shown in FIGS. 1, 5, and 6, the indoor unit 1000 of the air conditioner includes a housing 100, a filter assembly 200, a self-cleaning assembly 300, a drive assembly 400 (see FIG. 7B), and a transmission assembly 500 (see FIG. 11).

[0013] The housing 100 includes a front plate 191, a rear plate 192, a first side plate 193, and a second side plate 194. The front plate 191 is a side plate on the side away from the wall when the indoor unit of the air conditioner is attached to the indoor wall. The rear plate 192 is a side plate on the side close to the wall when the indoor unit is attached to the indoor wall. The first side plate 193 and the second side plate 194 are respectively connected to the front plate 191 and the rear plate 192, and extend along a direction perpendicular to the front plate 191 and the rear plate 192 respectively. For example, the first side plate 193 is a side plate on one side in the length direction of the housing 100 (i.e., the left-right direction shown in FIG. 1), and the second side plate 194 is a side plate on the other side in the length direction of the housing 100 (i.e., the left-right direction shown in FIG. 1). For example, the first side plate 193 is the left side plate of the indoor unit 1000 of the air conditioner, and the second side plate 194 is the right side plate of the indoor unit 1000 of the air conditioner.

[0014] The housing 100 is provided with a suction port 110. For example, a part of the top of the housing 100 is open, and the suction port 110 is formed. The filtration assembly 200 is installed in the housing 100 and is located at the suction port 110. The filtration assembly 200 is configured to filter the air entering the indoor unit 1000 of the air conditioner from the suction port 110 to prevent foreign matters in the air from entering the indoor unit 1000 of the air conditioner. The self-cleaning assembly 300 is installed in the housing 100 and is configured to remove the foreign matters attached to the filtration assembly 200.

[0015] The drive assembly 400 is installed on the housing 100, and the transmission assembly 500 is installed in the housing 100. The transmission assembly 500 is connected to the self-cleaning assembly 300 and the drive assembly 400 respectively, and under the drive of the drive assembly 400, the self-cleaning assembly 300 is moved to remove the foreign matters attached to the filtration assembly 200 by the self-cleaning assembly 300, execute the self-cleaning operation, and realize the maintenance of the cooling efficiency or heating efficiency of the indoor unit 1000 of the air conditioner.

[0016] In some embodiments, as shown in FIGS. 2 and 5, the indoor unit 1000 of the air conditioner further includes an indoor heat exchanger 600, a fan assembly 700 and an air outlet. The indoor heat exchanger 600 is installed in the housing 100 and is configured to exchange heat with the indoor air entering from the suction port 110. The fan assembly 700 is installed on the side away from the suction port 110 of the indoor heat exchanger 600 and is configured to suck in and pump out the indoor air.

[0017] For example, when the fan assembly 700 operates, the fan rotates to suck in the indoor air from the suction port 110, exchange heat between the indoor air and the indoor heat exchanger 600, and then pump out the indoor air heat-exchanged through the indoor heat exchanger 600 from the air outlet. The indoor unit 1000 of the air conditioner realizes the heating or cooling effect by heating or cooling the indoor air through the indoor heat exchanger 600, thereby raising or lowering the indoor temperature.

[0018] In some embodiments, as shown in FIGS. 6, 7A, and 7B, the filtration assembly 200 includes a filter 210. The filter 210 is installed between the suction port 110 and the indoor heat exchanger 600 (as shown in FIG. 5) and covers the suction port 110, so that the filter 210 can filter foreign matter in the air entering the indoor unit 1000 of the air conditioner from the suction port 110.

[0019] The self-cleaning assembly 300 includes a base 310, a first cleaning brush 320, a first reel 330, and a second reel 340. The base 310 is provided in the housing 100 and includes a mounting member 311 and a bracket 312. One side of the bracket 312 is connected to the side close to the back plate 192 of the mounting member 311 and extends along the thickness direction of the indoor unit 1000 of the air conditioner (the front-rear direction shown in FIG. 7A). A mounting cavity 313 is defined in the mounting member 311, and a part of the top of the mounting cavity 313 is open. The bracket 312 is configured to carry the filter 210. The filter 210 is installed on the bracket 312 and can move relative to the bracket 312.

[0020] The first cleaning brush 320, the first reel 330, and the second reel 340 are rotatably installed in the mounting cavity 313, and the first cleaning brush 320, the first reel 330, and the second reel 340 each extend along the length direction of the indoor unit 1000 of the air conditioner. The first cleaning brush 320 includes a first hair 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 at intervals and are substantially 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.

[0021] In some embodiments, as shown in FIGS. 5, 10, and 11, the transmission assembly 500 is installed on the base 310, and the transmission assembly 500 is connected to the first reel 330 and the second reel 340 respectively. The transmission assembly 500 is connected to the filter 210 via the first reel 330 and the second reel 340.

[0022] The drive assembly 400 is installed on the housing 100, and the drive assembly 400 includes a drive gear 410. The drive gear 410 is connected to the power output end. The power output end of the drive assembly 400 is removably connected to the 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 preset track 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 installed opposite to the first cleaning brush 320.

[0023] For example, the drive assembly 400 rotates the first reel 330 and the second reel 340 via the transmission assembly 500 such 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, so that the filter 210 is stretched between the first reel 330 and the second reel 340 and moves relative to the first cleaning brush 320. In this way, the first cleaning brush 320 can clean the area of the filter 210 facing it.

[0024] 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 driving 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. Further, the first driven gear 510 meshes with the intermediate gear 540.

[0025] In the process of the self-cleaning assembly 300 operating, the drive assembly 400 operates to rotate the drive gear 410 on the power output end along the first direction, thereby rotating the first driven gear 510 along the second direction, and in turn rotating the first reel 330 along the second direction. At the same time, the first driven gear 510 further rotates the second driven gear 520 along the first direction, thereby rotating the second reel 340 along the first direction.

[0026] Thus, under the action of the first reel 330 and the second reel 340, the filter 210 stretched between the first reel 330 and the second reel 340 moves along a preset track, whereby different regions on the filter 210 face the first cleaning brush 320 in sequence, and the first cleaning brush 320 cleans different regions of the filter 210.

[0027] It should be noted that the first direction is opposite to the second direction. When the first reel 330 rotates along the first direction to wind up the filter 210, the second reel 340 rotates along the second direction to unwind the filter 210.

[0028] For example, referring to FIGS. 7A, 7B, and 11, the first driven gear 510 is rotated counterclockwise under the drive of the drive gear 410, rotating the first reel 330 counterclockwise to wind up the filter 210. Thereafter, while the first driven gear 510 rotates counterclockwise, it rotates the second driven gear 520 clockwise, thereby rotating the second reel 340 clockwise to unwind the filter 210.

[0029] It is understood that the first driven gear 510 is rotated clockwise under the drive of the drive gear 410, rotating the first reel 330 clockwise to unwind the filter 210. Thereafter, while the first driven gear 510 rotates clockwise, it simultaneously rotates the second driven gear 520 counterclockwise, thereby rotating the second reel 340 counterclockwise to wind up the filter 210.

[0030] Also, simultaneously, the first driven gear 510 further rotates the intermediate gear 540 along the first direction, whereby the intermediate gear 540 rotates the third driven gear 530 along the second direction, and in turn rotates the first cleaning brush 320 along the second direction. Thus, the rotation direction of the first cleaning brush 320 is opposite to the movement direction of the filter 210, which is advantageous for improving the cleaning effect of the first cleaning brush 320 on the filter 210.

[0031] For example, since the number of teeth of the first driven gear 510 and the second driven gear 520 is the same, the rotation speeds of the first reel 330 and the second reel 340 are the same, whereby the filter 210 is stretched over the first reel 330 and the second reel 340.

[0032] In some embodiments, as shown in FIGS. 10, 11, and 12, the base 310 further includes a receiving cavity 314. One side of the mounting member 311 along the length direction of the indoor unit 1000 of the air conditioner is recessed toward the other side, thereby forming the receiving cavity 314. The transmission assembly 500 is installed in the receiving cavity 314, that is, the first driven gear 510, the second driven gear 520, the third driven gear 530, and the intermediate gear 540 are respectively installed in the receiving cavity 314. Providing the receiving cavity 314 in the base 310 is advantageous for protecting and concealing the first driven gear 510, the second driven gear 520, the intermediate gear 540, and the third driven gear 530, and is advantageous for routing the wiring in the indoor unit 1000 of the air conditioner, and prevents the operating components (such as the intermediate gear 540) from damaging other components (such as the fan assembly 700).

[0033] In some embodiments, as shown in FIG. 12, on the bottom side of the receiving cavity 314, a first opening 3141, a second opening 3142, and a third opening 3143 communicating with the mounting cavity 313 are provided. As shown in FIG. 14, a first prism 511 is provided in the middle of the first driven gear 510, and a first hole adapted to 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.

[0034] A second prism 521 is provided in the middle of the second driven gear 520, and a second hole adapted to the second prism 521 is provided at the end of the second reel 340. The second prism 521 passes through the second opening 3142 and is inserted into the second hole, thereby fixedly connecting the second driven gear 520 and the second reel 340. A third prism 531 is provided in the middle of the third driven gear 530, and a third hole adapted to the third prism 531 is provided at the end of the first cleaning brush 320. The third prism 531 passes through the third opening 3143 and is inserted into the third hole, thereby fixedly connecting the third driven gear 530 and the first cleaning brush 320.

[0035] 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 inside the indoor unit 1000 of the air conditioner 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, so the rotational stability can be improved.

[0036] In this way, the indoor air enters the housing 100 from the suction port 110 under the action of the fan assembly 700, is filtered through the filter 210, and then flows to the indoor heat exchanger 600. After that, the indoor air is heat-exchanged through the indoor heat exchanger 600 and then blown out from the air outlet.

[0037] After the indoor unit 1000 of the air conditioner operates for a certain period of time, foreign substances in the indoor air are filtered through the filter 210 and then deposited on the surface of the filter 210, attaching a lot of foreign substances to the filter 210, which may affect the filtering effect and suction effect of the filter 210. When there are a lot of foreign substances attached to the filter 210, the self-cleaning assembly 300 of the indoor unit 1000 of the air conditioner can remove the foreign substances attached to the filter 210 and maintain the filtering ability of the filter 210, so the cooling efficiency or heating efficiency of the indoor unit 1000 of the air conditioner can be improved.

[0038] In some embodiments, as shown in FIGS. 8A and 8B, the first reel 330 includes a first part 331 and a second part 332, and the first part 331 and the second part 332 are removably connected. The second reel 340 includes a third part 341 and a fourth part 342, and the third part 341 and the fourth part 342 are removably connected. One end of the filter 210 is clamped between the first part 331 and the second part 332, and the other end of the filter 210 is clamped between the third part 341 and the fourth part 342.

[0039] In addition, the first reel 330 and the second reel 340 are installed as a two-part structure that can be removably connected, and by sandwiching them, both ends of the filter 210 are fixed to the first reel 330 and the second reel respectively, thereby improving the stability of the connection between the first reel 330 and the second reel 340 by the filter 210, which is advantageous for maintaining the filter being stretched between the first reel 330 and the second reel 340.

[0040] The first part 331, the second part 332, the third part 341, and the fourth part 342 each extend along the thickness direction of the indoor unit 1000 of the air conditioner (the front-rear direction shown in FIGS. 8A and 8B), and have a stripe structure with an arc-shaped cross section. The outer surfaces of the first part 331, the second part 332, the third part 341, and the fourth part 342 are smooth, which is advantageous for winding up and unwinding the filter 210 around the first reel 330 and the second reel 340.

[0041] A first locking portion 333 is provided on the inner surface of the first part 331, and a second locking portion 334 is provided on the inner surface of the second part 332. The first locking portion 333 and the second locking portion 334 are lockingly connected to removably connect the first part 331 and the second part 332. A third locking portion 343 is provided on the inner surface of the third part 341, and a fourth locking portion 344 is provided on the inner surface of the fourth part 342. The third locking portion 343 and the fourth locking portion 344 are lockingly connected to removably connect the third part 341 and the fourth part 342. In this way, realizing the connection between the first part 331 and the second part 332 and the connection between the third part 341 and the fourth part 342 by locking connection is advantageous for the user to take out the filter 210 for cleaning.

[0042] In some embodiments, referring to FIGS. 2, 9, 10, and 15, the indoor unit 1000 of the air conditioner includes a plurality of filtration assemblies 200 and a plurality of self-cleaning assemblies 300. The housing 100 includes a plurality of suction ports 110. Each filtration assembly 200 corresponds to one self-cleaning assembly 300, and each suction port 110 corresponds to one filtration assembly 200.

[0043] By installing a plurality of suction ports 110, a plurality of filter assemblies 200, and a plurality of self-cleaning assemblies 300 inside the indoor unit 1000 of the air conditioner, it is advantageous for increasing the suction air volume and the blown air volume of the indoor unit 1000 of the air conditioner. Thus, it is understood that the cooling efficiency or the heating efficiency of the indoor unit 1000 of the air conditioner can be improved.

[0044] The indoor unit 1000 of the air conditioner 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 respectively. Each drive assembly 400 is connected to the filter assembly 200 via the corresponding transmission assembly 500. In this way, by driving each filter assembly 200 individually, the self-cleaning operation can be performed.

[0045] In some embodiments, as shown in FIGS. 13 and 14, the indoor unit 1000 of the air conditioner further includes at least one link 550. The plurality of 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 way, the drive assembly 400 can drive the plurality of self-cleaning assemblies 300 to operate via the link 550 and the plurality of transmission assemblies 500, which is advantageous for simplifying the structure of the indoor unit 1000 of the air conditioner.

[0046] In some embodiments, as shown in FIG. 12, the base 310 further includes a notch 315. For example, the side of the housing cavity 314 close to the back plate 192 is open, and the notch 315 is formed. A part of the first driven gear 510 protrudes from the notch 315, and the drive gear 410 meshes with the said part of the first driven gear 510.

[0047] It is understood that the detachable connection between the transmission assembly 500 and the drive assembly 400 is realized by the meshing between the first driven gear 510 and the drive gear 410. Installing the notch 315 in the base 310 is advantageous for realizing the meshing between the drive gear 410 and the first driven gear 510. When removing the transmission assembly 500, the drive gear 410 is not removed from the housing 100 together with the mounting member 311, and the first driven gear 510 is removed from the housing 100 together with the mounting member 311.

[0048] That is, the power output end of the drive assembly 400 and the transmission assembly 500 are detachably connected. However, since the transmission assembly 500 is connected to the self-cleaning assembly 300 and the filtration assembly 200 is connected to the self-cleaning assembly 300, when the user needs to remove the filtration assembly 200 and the self-cleaning assembly 300 to wash the filtration assembly 200 and the self-cleaning assembly 300, the base 310 can be removed from the housing 100 to remove the self-cleaning assembly 300 from the housing 100. At the same time, the drive assembly 400 is not removed from the housing 100 together with the transmission assembly 500, and the transmission assembly 500 is removed from the housing 100 together with the self-cleaning assembly 300.

[0049] In this way, the user can remove the filtration assembly 200 and the self-cleaning assembly 300 without contacting the drive assembly 400, wash the filtration assembly 200 and the self-cleaning assembly 300, which is advantageous for avoiding safety risks caused by contacting the drive assembly 400. Furthermore, since the drive assembly 400 is hidden in the housing 100, it is advantageous for protection and can avoid damage caused by external actions.

[0050] In some embodiments, as shown in FIG. 2, the housing 100 further includes a through hole 120 and a mounting groove 130. For example, a part of the front side of the housing 100 is open, and the through hole 120 is formed. A mounting groove 130 is defined within the housing 100. The front side of the mounting groove 130 is open. The through hole 120 communicates with the mounting groove 130, and the through hole 120 is located above the mounting groove 130. The mounting member 311 is provided within the mounting groove 130. The self-cleaning assembly 300 is provided inside the mounting member 311, and the transmission assembly 500 is provided outside the mounting member 311. The bracket 312 is installed within the housing 100 through the through hole 120.

[0051] The first reel 330, the second reel 340, and the first cleaning brush 320 are installed within the mounting member 311. The mounting member 311 is installed within the mounting groove 130. One side of the bracket 312 is connected to the mounting member 311 and extends rearward through the through hole 120. Accordingly, the user can remove the mounting member 311 from the mounting groove 130 through the through hole 120, so that the bracket 312 and the filter 210 are removed from the housing 100 together with the mounting member 311, realizing the removal of the filtration assembly 200 and the self-cleaning assembly 300. In this way, it is advantageous to reduce the difficulty of detaching and attaching the filtration assembly and the self-cleaning assembly, facilitating the cleaning of the removed filtration assembly 200 and self-cleaning assembly 300 by the user.

[0052] Similarly, the user can attach the mounting member 311 into the mounting groove 130 through the through hole 120, so that the bracket 312 and the filter 210 are attached to the housing 100 together with the mounting member 311, realizing the attachment of the filtration assembly 200 and the self-cleaning assembly 300.

[0053] In some embodiments, as shown in FIG. 9, the air conditioner indoor unit 1000 further includes a position limiting block 160. The position limiting block 160 is rotatably installed on the front plate 191 of the housing 100 and is close to the mounting groove 130. The position limiting block 160 is configured to be rotatably switched between a locked position and an unlocked position.

[0054] For example, when the position-limiting block 160 is in the locked position, at least a part of the position-limiting block 160 is in front of the mounting member 311, so that it inhibits the mounting member 311 from sliding out of the mounting groove 130. When the position-limiting block 160 is in the unlocked position, since the position-limiting block 160 is on the front plate 191 of the housing 100, the mounting member 311 can slide forward and disengage from the mounting groove 130.

[0055] Note that when the indoor unit 1000 of the air conditioner operates, the position-limiting block 160 is in the locked position to prevent the mounting member 311 from sliding out of the mounting groove 130. When it is necessary to clean the filtration assembly 200, the mounting member 311 can be taken out by rotating the position-limiting block 160 to the unlocked position.

[0056] For example, the indoor unit 1000 of the air conditioner includes a plurality of position-limiting blocks 160. Installing a plurality of position-limiting blocks 160 on the housing 100 is advantageous for the user to detach and attach the filtration assembly 200.

[0057] In some embodiments, as shown in FIG. 15, the self-cleaning assembly 300 further includes a dust collection box 350 and an ash-dropping box 360. The dust collection box 350 is installed on the base 310 and is located below the first cleaning brush 320. The dust collection box 350 is configured to collect foreign matters removed from the filter 210.

[0058] As shown in FIGS. 3 and 9, the indoor unit 1000 of the air conditioner further includes an insertion groove 150. The insertion groove 150 is provided in the front plate 191 of the housing 100. The dust box 360 is installed in the insertion groove 150, and the dust box 360 is located below the dust collection box 350. The insertion groove 150 has a first side wall 151 and a second side wall 152 that are provided at intervals along the length direction of the indoor unit 1000 of the air conditioner (that is, the left-right direction in FIG. 9). A first engagement groove 153 is provided in the first side wall 151, and a second engagement groove 154 is provided in the second side wall 152. As shown in FIG. 12, the dust box 360 is provided with a first engagement block and a second engagement block that are provided at intervals along the length direction of the indoor unit 1000 of the air conditioner (that is, the left-right direction in FIG. 9).

[0059] Due to 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, the dust box 360 is removably attached in the insertion groove 150.

[0060] In some embodiments, as shown in FIGS. 15 and 16, the self-cleaning assembly 300 further includes a second cleaning brush 370. The second cleaning brush 370 is installed in the dust collection box 350 and is configured to brush off foreign matter attached to the first cleaning brush 320 into the dust collection box 350. The second cleaning brush 370 includes a second hair brush 371, and the second hair brush 371 is configured to be inserted into the first cleaning brush 320.

[0061] When the self-cleaning assembly operates, some foreign matter may adhere to the first hair brush 321, and the second hair brush 371 can brush off the foreign matter attached to the first hair brush 321 into the dust collection box 350. Therefore, the first hair brush 321 can contact the filter 210 in a state where no foreign matter is attached and remove the foreign matter attached to the filter 210, which is beneficial to improving the cleaning effect of the filter 210 is advantageous.

[0062] In some embodiments, as shown in FIGS. 1 and 4, the indoor unit 1000 of the air conditioner further includes a panel 800. The panel 800 is removably connected to the front side of the housing 100 and seals the through hole 120. For example, when the indoor unit 1000 of the air conditioner operates, the panel 800 is installed to cover the front side of the housing 100 to harmonize the appearance of the indoor unit 1000 of the air conditioner. When it is necessary to remove and clean the filtration assembly 200 and the self-cleaning assembly 300, the panel 800 can be removed from the front side of the housing 100, and then the filtration assembly 200 and the self-cleaning assembly 300 can be removed from the housing 100 through the through hole 120.

[0063] As shown in FIG. 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. By connecting the first fitting portion and the second fitting portion 140 by engagement, the panel 800 is removably connected to the front side of the housing 100.

[0064] In some embodiments, as shown in FIG. 17, the filter 210 includes a filtering portion 211 and a blocking portion 212 connected in sequence. The filtering portion 211 is configured to filter the air entering the housing 100 from the suction port 110. The blocking portion 212 is configured to block the air entering the housing 100 from the suction port 110.

[0065] For example, when the filter 210 moves along a preset track, the filter 210 can move between a filtering position and a blocking position. When the filter 210 is in the filtering position, the filtering portion 211 covers the suction port 110 and filters the air entering the housing 100 from the suction port 110. When the filter 210 is in the blocking position, the blocking portion 212 covers the suction port 110 and blocks the air entering the housing 100 from the suction port 110.

[0066] When the indoor unit 1000 of the air conditioner operates, the filter 210 is in the filtering position, and the filtering part 211 covers the suction port 110 to filter the air entering from the suction port 110. When the indoor unit of the air conditioner stops operating, the filter 210 moves from the filtering position to the blocking position, and the blocking part 212 covers the suction port 110. Therefore, air and dust are blocked by the blocking part 212, avoiding dust from entering the inside of the housing 100.

[0067] The filtering part 211 is a region having a plurality of holes with small pore diameters. It is understood that the plurality of holes on the filtering part 211 can filter foreign matters such as large-particle dust in the air and allow the filtered air to enter the housing 100. The blocking part 212 is a region having no holes, and air and dust cannot pass through it. For example, the blocking part 212 is made of a plastic film, and a heat fusion part for connecting the blocking part 212 and the filtering part 211 is provided between the blocking part 212 and the filtering part 211.

[0068] In this way, by providing the blocking part 212 on the filter 210, when the indoor unit 1000 of the air conditioner stops operating, air and dust cannot enter the housing 100, avoiding the entry of dust and the like into the inside of the housing 100, preventing foreign matters such as dust from adhering to the indoor heat exchanger 600 or the fan assembly 700 inside the housing 100, keeping the inside of the indoor unit 1000 of the air conditioner cleaner, and being advantageous for improving the cooling effect or heating effect of the indoor unit 1000 of the air conditioner.

[0069] In some embodiments, the indoor unit 1000 of the air conditioner further includes a sensor and a controller. The sensor is configured to send a signal indicating the execution of the self-cleaning mode to the controller. For example, the signal is a signal instructing the execution or stop of the self-cleaning mode of the indoor unit 1000 of the air conditioner. When the foreign matter on the filter 210 reaches a preset amount, the sensor sends a signal indicating the execution of the self-cleaning mode to the controller. When the foreign matter on the filter 210 is less than the preset amount, the sensor sends a signal indicating the stop of the self-cleaning mode to the controller.

[0070] The controller is configured to receive the signal from the sensor, respond to the signal, and control the indoor unit 1000 of the air conditioner to perform the operation indicated by the signal. For example, when receiving a signal indicating the execution of the self-cleaning mode from the sensor, the indoor unit 1000 of the air conditioner is controlled to execute the self-cleaning mode. When receiving a signal indicating the stop of the self-cleaning mode from the sensor, the indoor unit 1000 of the air conditioner is controlled to stop the self-cleaning mode.

[0071] For example, after the indoor unit 1000 of the air conditioner operates for a certain period of time, the indoor air continuously flows from the suction port 110 to the indoor heat exchanger 600 under the action of the fan assembly 700, and after heat exchange in the indoor heat exchanger 600, it is sent into the room from the air outlet by the fan assembly 700. Therefore, the foreign matter adhering to the filter 210 facing the suction port 110 in the indoor unit 1000 of the air conditioner increases. When the foreign matter on the filter 210 reaches the preset amount, the sensor sends a signal indicating the execution of the self-cleaning mode to the controller.

[0072] The controller receives a signal indicating the execution of the self-cleaning mode from the sensor, and controls the air conditioner indoor unit 1000 to execute the self-cleaning mode. When the self-cleaning mode is executed, the drive assembly 400 can rotate the first reel 330 and the second reel 340 in opposite directions through the transmission assembly 500, so as to drive the filter 210 to move along a preset track. The first cleaning brush 320 is installed opposite to different regions of the filter 210, and can clean the region of the filter 210 installed opposite to itself.

[0073] When the first reel 330 and the second reel 340 rotate in opposite directions, the first cleaning brush 320 abuts against the first reel 330 to remove foreign matters on the filter 210 wound around the first reel 330, and the foreign matters fall into the dust collection box 350 to realize the collection of foreign matters. When there are many foreign matters in the dust collection box 350, the dust collection box 350 can be removed and cleaned.

[0074] Some embodiments of the present disclosure provide another air conditioner indoor unit 100A. As shown in FIG. 18, the air conditioner indoor unit 100A includes a housing 10, an indoor heat exchanger 20, a fan assembly 30, at least one filter 40, at least one self-cleaning assembly 50, at least one drive assembly 60, and at least one transmission assembly 70.

[0075] As shown in FIGS. 19 to 21, the housing 10 includes a front plate 12, a back plate 13, a first side plate 14, and a second side plate 15. The first side plate 14 and the second side plate 15 are respectively connected to the front plate 12 and the back plate 13, and extend along directions perpendicular to the front plate 12 and the back plate 13 respectively.

[0076] The housing 10 includes at least one suction port 11 and an air outlet. A part of the top of the housing 10 is open, and the suction port 11 is formed.

[0077] A part of the bottom of the housing 10 is open, and the air outlet is formed. The indoor heat exchanger 20 is provided in the housing 10 and is configured to exchange heat with the indoor air entering from the suction port 11. The fan assembly 30 is installed on the side away from the suction port 11 of the indoor heat exchanger 20 and is configured to suck in and pump out the indoor air.

[0078] The filter 40 is installed between the suction port 11 and the indoor heat exchanger 20 and covers the suction port 11. The filter 40 is configured to filter the air entering the air conditioner indoor unit 100A from the suction port 11 to prevent foreign matters in the air from entering the air conditioner indoor unit 100A.

[0079] The self-cleaning assembly 50 is installed in the housing 10 and is configured to clean the foreign matters attached to the filter 40. The drive assembly 60 is installed on the housing 10, and the transmission assembly 70 is installed in the housing 10. The drive assembly 60 is configured to drive the transmission assembly 70 to rotate. The transmission assembly 70 is connected to the self-cleaning assembly 50 and the drive assembly 60 respectively, and is configured to move the self-cleaning assembly under the drive of the drive assembly 60 to remove the foreign matters attached to the filter 40 by the self-cleaning assembly 50, thereby realizing the maintenance of the cooling efficiency or heating efficiency of the air conditioner indoor unit 100A.

[0080] In some embodiments, as shown in FIG. 23, the self-cleaning assembly 50 includes a base 51, a second reel 53, a first reel 52, a cleaning brush assembly 54 and a dust collection box 55. The base 51 is provided in the housing 10 and is close to the front plate 12. The base 51 includes a base main body 511A and a bracket 512. One side of the bracket 512 is connected to the side close to the back plate 13 of the base main body 511A and extends along the thickness direction of the housing 10 (i.e., the front-rear direction shown in FIG. 19). The bracket 512 is configured to carry the filter 40. The filter 40 may be installed on the bracket 512 and move along a preset track on the bracket 512.

[0081] The second reel 53, the first reel 52, and the cleaning brush assembly 54 are rotationally connected to the base body 511A, and the second reel 53, the first reel 52, and the cleaning brush assembly 54 extend along the length direction of the housing 10 respectively. The second reel 53 and the first reel 52 are installed at intervals and are substantially parallel. The filter 40 is stretched between the second reel 53 and the first reel 52. The cleaning brush assembly 54 is installed close to the first reel 52, and is configured to clean foreign matters on the filter 40 during the process that the filter 40 is wound up by the first reel 52 or the second reel, or during the process that the filter 40 is wound down by the first reel 52 or the second reel.

[0082] The self-cleaning assembly 50 further includes a cleaning cavity 56. The base body 511A defines the cleaning cavity 56. The cleaning cavity 56 includes a first opening 563 and a second opening 564. The top of the cleaning cavity 56 is open to form the first opening 563. The bottom of the cleaning cavity 56 is open to form the second opening 564. The second reel 53 is located above the first opening 563, the first reel 52 is located at the first opening 563, and the cleaning brush assembly 54 is located in the cleaning cavity 56. The dust collection box 55 is installed below the second opening 564 and is configured to accommodate the foreign matters swept off from the filter 40 by the cleaning brush assembly 54.

[0083] In some embodiments, the second reel 53 and the first reel 52 rotate along opposite directions. During the cleaning process by the self-cleaning assembly 50, the filter 40 is wound up on the first reel 52 and wound down on the second reel 53, or the filter 40 is wound down on the first reel 52 and wound up on the second reel 53.

[0084] In some embodiments, as shown in FIGS. 21 and 24, the cleaning brush assembly 54 includes a cleaning brush base 541, a cleaning brush 542, and at least one elastic member 543. The cleaning brush 542 is movably provided on the cleaning brush base 541 and abuts against a part of the filter 40. The cleaning brush base 541 includes a first mounting portion 5411 and a second mounting portion 5412. The first mounting portion 5411 is provided on the second mounting portion 5412 and connected to the second mounting portion 5412. One of the at least one elastic member 543 has one end abutting against the first mounting portion 5411 and the other end abutting against the second mounting portion 5412.

[0085] For example, the elastic member 543 is a spring. The cleaning brush 542 is provided on the side of the first mounting portion 5411 away from the second mounting portion 5412. When the cleaning brush 542 abuts against the first reel 52, the first reel 52 applies a force to the cleaning brush 542, that is, the first reel 52 applies a force to the first mounting portion 5411, thereby compressing the elastic member 543 in the first mounting portion 5411.

[0086] Since the second mounting portion 5412 does not move along the height direction of the housing 10 (i.e., the vertical direction shown in FIG. 19), the elastic member 543 can elastically abut the cleaning brush 542 against the first reel 52 by applying an elastic force with the same magnitude but opposite direction to the first mounting portion 5412 so that the cleaning brush 542 applies a force to the first reel 52. The cleaning brush base 541 abuts the cleaning brush 542 against the first reel 52 through the elastic member 543, realizing that the cleaning brush 542 abuts against the first reel 52 during the rotation of the first reel 52 or the cleaning brush base 541, which is advantageous for improving the cleaning ability of the cleaning brush 542 against the filter 40 wound around the first reel 52. At the same time, excessive wear of the cleaning brush 542 due to hard contact between the first reel 52 and the cleaning brush 542 is avoided, and the service life of the cleaning brush 542 is extended.

[0087] The cleaning brush 542 abuts against the first reel 52 via the elastic member 543. When the second reel 53 and the first reel 52 rotate in opposite directions, the cleaning brush 542 abuts against the first reel 52, and the filter 40 that has moved to the abutting part can be cleaned. Thus, it is understood that foreign matter removed from the filter 40 falls into the dust collection box 55, realizing the collection of foreign matter. Since the first reel 52 vibrates or has radial runout during rotation, the elasticity of the elastic member 543 is advantageous for improving the stability of the contact between the cleaning brush 542 and the first reel 52 and avoiding hard contact between the first reel 52 and the cleaning brush 542.

[0088] In some embodiments, as shown in FIGS. 25 and 26, the cleaning brush assembly 54 further includes at least one first position limiting component (position limiting component) 565. The at least one first position limiting component 565 is provided on the inner wall of the cleaning cavity 56. The first position limiting component 565 is configured to abut against the cleaning brush 542 when the elastic member 543 tends to be compressed or the elastic member 543 tends to be stretched during the rotation of the cleaning brush base 541, so that the elastic member 543 slowly undergoes elastic deformation.

[0089] After the cleaning brush 542 is separated from the second reel 53, the cleaning brush 542 rotates in a direction away from the cleaning brush base 541. As the cleaning brush base 541 rotates, the side of the cleaning brush 542 close to the filter 40 engages with the first position limiting component 565. The first position limiting component 565 is configured to limit the movement distance of the cleaning brush 542 relative to the cleaning brush base 541 in order to avoid generating abnormal noise due to the sudden movement of the cleaning brush 542 when the cleaning brush 542 detaches from the filter 40.

[0090] By providing the first position limiting component 565, when the cleaning brush 542 is separated from the filter 40, it is advantageous to delay the deformation process of the elastic material 543 from the compressed state to the tensile state, and to avoid the reduction of the stability that the elastic material 543 is attached between the cleaning brush 542 and the cleaning brush base 541 due to the rapid and intense movement of the elastic material 543, to enhance the reliability that the elastic material 543 is attached between the cleaning brush 542 and the cleaning brush base 541, to avoid the irreversible deformation of the elastic material 543, to protect the elastic material 543, to extend the service life of the elastic material 543, to improve the structural stability of the cleaning brush assembly 54, and to avoid the generation of abnormal noises during the use process of the self-cleaning assembly 50.

[0091] In some embodiments, as shown in FIGS. 23, 25 and 26, the self-cleaning assembly 50 further includes a cleaning component 59. The cleaning component 59 is provided on the inner wall of the base 51, and the cleaning component 59 is provided on the side close to the cleaning cavity 56 of the base front cover 513. For example, the cleaning component 59 and the base front cover 513 may be connected by an adhesive or an engaging structure. The first position limiting component 565 is located on at least one side of the cleaning component 59 close to the filter 40 or away from the filter 40.

[0092] The first position limiting component 565 is located on at least one side in the circumferential direction along the center of the cleaning brush base 541 of the cleaning component 59. The central axis of the cleaning brush base 541 is the rotation axis of the cleaning component 59. The first position limiting component 565 may be installed between the cleaning component 59 and the second reel 53. When the cleaning brush 542 is separated from the filter 40, the cleaning brush 542 first locks to the first position limiting component 565, then locks to the cleaning component 59, and turns away from the second reel 53 along the height direction of the housing 10 of the cleaning component 59.

[0093] By installing the cleaning component 59 on the side wall of the cleaning cavity, it is advantageous for realizing the self-cleaning function of the cleaning brush assembly 54. When it is necessary to clean the cleaning brush 542, it is possible to avoid removing the self-cleaning assembly 50, reduce the difficulty of cleaning the cleaning brush 542, and improve the cleaning efficiency of the cleaning brush 542.

[0094] The first position limiting component 565 is installed adjacent to the cleaning component 59, and both the first position limiting component 565 and the cleaning component 59 are located on one side in the circumferential direction of the central axis of the cleaning brush base 541. The cleaning brush assembly 54 can maintain the movement of its original movement trajectory, and the structures of the cleaning component 59 and the first position limiting component 565 are simple, which is advantageous for reducing the manufacturing difficulty and manufacturing cost.

[0095] In some embodiments, as shown in FIGS. 30 and 31, the first position limiting component 565 includes at least one of a first position limiting portion 5651 and a second position limiting portion 5652. The first end 566 of the first position limiting portion 5651 is close to the cleaning component 59. The first position limiting portion 5651 and the second position limiting portion 5652 are respectively provided on the same side of the cleaning cavity 56, and along the height direction of the housing 10 (for example, the up and down direction in FIG. 31), the first position limiting portion 5651, the cleaning component 59, and the second position limiting portion 5652 are arranged in sequence. The cleaning component 59 is located between the first position limiting portion 5651 and the second position limiting portion 5652.

[0096] As shown in FIGS. 27 to 29, when the cleaning brush 542 moves between the filter 40 and the cleaning part 59, the cleaning brush 542 is locked to the first position limiting part 5651 from the time it separates from the filter 40 until it separates from the cleaning part 59. After the cleaning brush 542 separates from the cleaning part 59, along the height direction of the housing 10, the cleaning brush 542 moves in a direction away from the first position limiting part 5651 of the cleaning part 59, and the cleaning brush 542 is locked to the second position limiting part 5652. In this way, abnormal noises generated during the movement of the cleaning brush 542 can be reduced. When the cleaning brush 542 rotates from the position where it is locked to the cleaning part 59 to the position where it is locked to the first position limiting part 5651 or the second position limiting part 5652, the deformation process of the elastic material 543 is relatively gentle. In this way, rapid compression or tension of the elastic material 543 can be avoided, which is beneficial for protecting the elastic material 543 and reducing abnormal noises generated by the movement of the cleaning brush 542.

[0097] In some embodiments, as shown in FIGS. 27 to 29, in the direction from the Second end 567 to the First end 566 of the first position limiting part 5651, the width of the first position limiting part 5651 in the thickness direction of the indoor unit 1000 of the air conditioner gradually decreases. The cleaning brush 542 is further configured to move in a direction away from the center of the cleaning brush base 541 when rotating from the second position to the first position. The first position is the position when the cleaning brush 542 abuts against the filter 40 of the second reel 53. The second position is the position when the cleaning brush 542 abuts against the first position limiting part 5651.

[0098] As shown in FIGS. 27 and 28, when the cleaning brush 542 rotates from the second position to the first position along the first direction M, the cleaning brush 542 moves in a direction away from the center of the cleaning brush base 541. Here, the first direction M may be the clockwise direction. The second end 567 of the first position limiting part 5651 is close to the second reel 53, the first end 566 of the first position limiting part 5651 is close to the cleaning part 59, and the distance between the first end 566 and the center of the cleaning brush base 541 is greater than the distance between the second end 567 and the center of the cleaning brush base 541.

[0099] In the process of the cleaning brush 542 rotating from the second position to the first position, when the cleaning brush 542 moves from the position where it locks with the second end 567 to the position where it locks with the second reel 53, the cleaning brush 542 moves in a direction away from the center of the cleaning brush base 541. In this case, in the direction pointing from the second end 567 to the first end 566, the width of the first position limiting part 5651 decreases. In this way, when the cleaning brush assembly 54 rotates, the deformation process of the elastic material 543 can be delayed, and when moving between the cleaning part 59 and the second reel 53, the cleaning brush 542 locks with the first position limiting part 5651, improving the stability of the movement of the cleaning brush 542 relative to the cleaning brush base 541 and extending the service life of the cleaning brush assembly 54.

[0100] In some embodiments, as shown in FIGS. 27 to 29, in the direction from the second end 569 to the first end 568 of the second position limiting part 5652, the width of the second position limiting part 5652 in the thickness direction of the air conditioner indoor unit 1000 decreases, and along the height direction of the base 51, the second end 569 of the second position limiting part 5652 is lower than the cleaning brush assembly 54. In this way, it is advantageous for the rotation of the cleaning brush assembly 54. The cleaning brush 542 is further configured to first move in a direction away from the center of the cleaning brush base 541 and then move in a direction approaching the center of the cleaning brush base 541 when rotating from the third position to the second position. The third position is the position when the cleaning brush 542 abuts against the second position limiting part 5652.

[0101] As shown in FIGS. 28 and 29, when the cleaning brush 542 rotates from the third position to the second position along the first direction M, the cleaning brush 542 first moves in a direction away from the center of the base 51, and then moves in a direction towards the center of the base 51. The first end 568 of the second position limiting part 5652 is close to the cleaning part 59, the second end 569 of the second position limiting part 5652 is away from the cleaning part 59, and the distance between the first end 568 of the second position limiting part 5652 and the center of the cleaning brush base 541 is greater than the distance between the second end 569 of the second position limiting part 5652 and the center of the cleaning brush base 541.

[0102] In the process of the cleaning brush 542 rotating from the third position to the second position, the cleaning brush 542 first rotates from the position where it locks with the second end 569 of the second position limiting part 5652 to the position where it locks with the first end 568 of the second position limiting part 5652, and the cleaning brush 542 moves in a direction away from the cleaning brush base 541. In the process of the cleaning brush 542 rotating towards the cleaning part 59, the cleaning brush 542 separates from the second position limiting part 5652. After the cleaning brush 542 locks with the cleaning part 59 and then separates from the cleaning part 59, the cleaning brush 542 moves from the position where it locks with the first end 566 of the first position limiting part 5651 to the position where it locks with the second end 567 of the first position limiting part 5651. In this movement process, the cleaning brush 542 moves in a direction towards the center of the cleaning brush base 541. When the cleaning brush 542 locks with the second end 569 of the second position limiting part 5652, the cleaning brush 542 changes its rotation direction by the movement of the cleaning brush base 541 and rotates in a direction towards the first position limiting part 5651 (for example, the second direction N), so that the cleaning brush 542 rotates between the cleaning part 59 and the filter 40, and the cleaning brush 542 rotates between the upper and lower sides of the cleaning part 59, thereby realizing the cleaning of the cleaning brush 542 by the cleaning part 59 and the rotation limitation of the cleaning brush 542 by the second position limiting part 5652. Here, the second direction N is the opposite direction to the first direction M. For example, the second direction N is the counterclockwise direction.

[0103] In some embodiments, as shown in FIGS. 27 to 29, the surfaces of the first position limiting part 5651 and the second position limiting part 5652 facing the cleaning brush 542 may be flat or arc-shaped surfaces. That is, the surface of the first position limiting part 5651 that locks with the cleaning brush 542 and the surface of the second position limiting part 5652 that locks with the cleaning brush 542 are each a flat or arc-shaped surface. For example, the surface of the first position limiting part 5651 facing the cleaning brush 542 is a flat surface, and the surface of the second position limiting part 5652 facing the cleaning brush 542 is an arc-shaped surface. When the cleaning brush 542 locks to the second end 569 of the second position limiting part 5652, the second position limiting part 5652 can limit the continuous rotation of the cleaning brush 542. Therefore, installing one side of the first position limiting part 5651 and the second position limiting part 5652 as a flat or arc-shaped surface is advantageous for the relative rotation between the cleaning brush 542 and the first position limiting part 565, making the rotation of the cleaning brush assembly 54 smoother and the deformation process of the elastic material 543 gentler, thereby being advantageous for extending the service life of the cleaning brush assembly 54.

[0104] In some embodiments, as shown in FIGS. 27 to 29, along the height direction of the base 51, the first end 566 of the first position limiting portion 5651 is higher than the cleaning component 59, and the first end 568 of the second position limiting portion 5652 is lower than the cleaning component 59. In this case, along the height direction of the housing 10, the first position limiting portion 5651, the cleaning component 59, and the second position limiting portion 5652 are installed in order from top to bottom. Thereby, it is advantageous to change from the position where the cleaning brush 542 is locked to the filter 40 to the position where it is locked to the cleaning component 59, and to change from the position where the cleaning brush 542 is locked to the cleaning component 59 to the position where it is locked to the filter 40. The first position limiting portion 5651 and the second position limiting portion 5652 slow down the process in which the elastic member 543 moves the cleaning brush 542 toward the center of the cleaning brush base 514 or the process in which the elastic member 543 moves the cleaning brush 542 away from the center of the cleaning brush base 514, so that the deformation process of the elastic member 543 can extend. It is advantageous for the first position limiting portion 5651 and the second position limiting portion 5652 to be locked to the cleaning brush 542 respectively, and the abnormal noise generated in the movement process of the cleaning brush 542 can be reduced.

[0105] In some embodiments, as shown in FIG. 31, the second position limiting portion 5652 includes a first sub-position limiting portion 5653 and a second sub-position limiting portion 5654. The first sub-position limiting portion 5653 is located at one end of the second position limiting portion 5652 close to the cleaning component 59, and the second sub-position limiting portion 5654 is located at the other end of the second position limiting portion 5652 away from the cleaning component 59. One end of the first sub-position limiting portion 5653 is connected to the inner wall of the cleaning cavity 56, the second sub-position limiting portion 5654 is connected to the other end of the first sub-position limiting portion 5653, and the distance between the center of the cleaning brush base 541 and the first sub-position limiting portion 5653 is greater than the distance between the center of the cleaning brush base 541 and the second sub-position limiting portion 5654. Therefore, the distance between the cleaning brush 542 and the center of the cleaning brush base 514 when the cleaning brush 542 is locked to the first sub-position limiting portion 5653 is greater than the distance between the cleaning brush 542 and the center of the cleaning brush base 514 when the cleaning brush 542 is locked to the second sub-position limiting portion 5654.

[0106] Therefore, the compression stroke of the elastic material 543 when the cleaning brush 542 is locked to the second sub-position limiting part 5654 is larger than the compression stroke of the elastic material 543 when the cleaning brush 542 is locked to the first sub-position limiting part 5653. Thus, when the cleaning brush 542 rotates from the first sub-position limiting part 5653 to the second sub-position limiting part 5654, the cleaning brush 542 moves in a direction approaching the center of the cleaning brush base 514, and the second sub-position limiting part 5654 can limit the cleaning brush 542. For example, the locking of the second sub-position limiting part 5654 to the cleaning brush 542 can avoid the cleaning brush 542 from continuously rotating in a direction away from the first sub-position limiting part 5653.

[0107] In some embodiments, as shown in FIGS. 30 and 31, the thickness L along the length direction of the housing 10 of the first position limiting component 565 is an arbitrary value within a preset range. For example, the preset range is from 1 mm to 3 mm. In this case, L is 1 mm or more and 3 mm or less (1 mm ≤ L ≤ 3 mm). For example, the thickness L along the length direction of the housing 10 of the first position limiting component 565 is 1 mm, 2 mm, or 3 mm. When the thickness L along the length direction of the housing 10 of the first position limiting component 565 is greater than 3 mm, the contact area between the first position limiting component 565 and the cleaning brush 542 increases. As a result, during the rotation process of the cleaning brush 542, the frictional force generated between the cleaning brush 542 and the first position limiting component 565 is too large, which affects the rotation of the cleaning brush 542, and the bristles of the cleaning brush 542 are likely to undergo irreversible deformation, thereby wasting materials and increasing costs. Direction

[0108] ​When the thickness L along the length direction of the base 51 of the first position limiting component 565 is less than 1 mm, the first position limiting component 565 is too thin. As a result, when the cleaning brush 542 and the first position limiting component 565 are locked during the rotation process of the cleaning brush 542, the first position limiting component 565 is likely to break. Moreover, if the first position limiting component 565 is too thin, the manufacturing difficulty increases and the cost rises. Therefore, setting the thickness L along the length direction of the housing 10 of the first position limiting component 565 within a preset range can limit the position of the cleaning brush 542 when the cleaning brush 542 is locked to the filter 40 and when the cleaning brush 542 is locked to the cleaning component 59, delay the deformation process of the elastic material 543, reduce the cost, improve the structural strength of the first position limiting component 565, and also extend the service life of the component.

[0109] In some embodiments, as shown in FIG. 30, the cleaning brush assembly 54 includes a plurality of first position limiting components 565. The plurality of first position limiting components 565 are installed at intervals along the length direction of the housing 10, whereby the force applied to each first position limiting component 565 can be reduced. Also, the fact that the plurality of first position limiting components 565 are respectively located at both ends in the length direction of the housing 10 is advantageous for improving the supporting ability of the first position limiting component 565 to the cleaning brush 542 and improving the overall structural strength of the base 51.

[0110] In some embodiments, as shown in FIGS. 20, 21, and 25, the dust collection box 55 includes a dust collection box main body 551 and an engagement hole 553. The engagement hole 553 is provided at one end along the length direction of the housing 10 of the dust collection box main body 551. The housing 10 further includes a positioning tool, and the positioning tool is provided on the side plate on the side along the length direction of the housing 10. The dust collection box 55 and the housing 10 realize a detachable connection between the dust collection box 55 and the housing 10 through the fitting and engagement of the engagement hole 553 and the positioning tool.

[0111] As shown in FIG. 32, the dust collection box 55 further includes a baffle plate 552. The baffle plate 552 is provided on the front side of the dust collection box main body 551. One end of the baffle plate 552 is connected to the dust collection box main body 551, and the other end of the baffle plate 552 extends upward along the height direction of the housing 10 (that is, the vertical direction shown in FIG. 19). The baffle plate 552 is configured to seal the gap between the front side of the dust collection box 55 and the front side of the base 51 when assembling the dust collection box 55 to the base 51, so as to prevent foreign matter in the dust collection box 55 from spilling out through the gap.

[0112] In some embodiments, as shown in FIG. 24, the cleaning brush assembly 54 further includes a mounting cavity 544. The side of the second mounting portion 5412 facing the cleaning brush 542 is open, and the first mounting portion 5411 is provided on the open side of the second mounting portion 5412. The first mounting portion 5411 and the second mounting portion 5412 together define the mounting cavity 544. The elastic member 543 is installed in the mounting cavity 544. Both ends of the elastic member 543 are connected to abut against the first mounting portion 5411 and the second mounting portion 5412 respectively. Therefore, when the first mounting portion 5411 is pressed, the first mounting portion 5411 can move toward the second mounting portion 5412.

[0113] In some embodiments, as shown in FIG. 24, the cleaning brush assembly 54 further includes at least one positioning post 545. Any one of the at least one positioning post 545 is provided on either the first mounting portion 5411 or the second mounting portion 5412. The elastic member 543 is installed by fitting into any one of the positioning posts 545.

[0114] In some embodiments, as shown in FIG. 24, the cleaning brush base 541 further includes at least one engagement groove 5414 and at least one locking member 5415. At least one engagement groove 5414 is provided on at least one of the two side walls along the width direction of the housing 10 of the first attachment portion 5411. At least one locking member 5415 is provided on at least one of the two side walls along the width direction of the housing 10 of the second attachment portion 5412. The first attachment portion 5411 is connected to the second attachment portion 5412 by the locking member 5415 and the engagement groove 5414 being fitted and engaged with each other. When the locking member 5415 is engaged in the engagement groove 5414, the locking member 5415 may move along the height direction of the housing 10 within the engagement groove 5414.

[0115] For example, when at least one first attachment portion 5411 includes a plurality of engagement grooves 5414, the plurality of engagement grooves 5414 are provided at intervals on both side walls along the width direction of the housing 10 of the first attachment portion 5411. Since the length of the engagement groove 5414 along the height direction of the housing 10 is greater than the length of the locking member 5415 along the height direction of the housing 10, the first attachment portion 5411 can move relative to the second attachment portion 5412 along the height direction of the housing 10.

[0116] When the cleaning brush 542 abuts against the first reel 52, it is understood that the first attachment portion 5411 moves toward the second attachment portion 5412. When the cleaning brush 542 separates from the first reel 52, the first attachment portion 5411 moves in a direction away from the second attachment portion 5412. In this way, since the first attachment portion 5411 and the second attachment portion 5412 are engaged by the fitting of the engagement groove 5414 and the locking member 5415, it is advantageous for improving the assembly efficiency of the first attachment portion 5411 and the second attachment portion 5412, simplifying the structure of the cleaning brush base 541, and improving the assembly stability of the first attachment portion 5411 and the second attachment portion 5412.

[0117] Furthermore, when the locking member 5415 is engaged in the engagement groove 5414, the locking member 5415 can move relative to the engagement groove 5414, which is advantageous for realizing the movement of the first mounting portion 5411 relative to the second mounting portion 5412. The cleaning brush 542 is abutted against the first reel 52, and the cleaning efficiency of the filter 40 by the cleaning brush 542 is improved.

[0118] In some embodiments, as shown in FIGS. 23 to 25, the first mounting portion 5411 includes a first side portion 5416, a second side portion 5417, and a connecting portion 5413. Both ends of the connecting portion 5413 along the thickness direction of the housing 10 are respectively connected to the upper sides of the first side portion 5416 and the second side portion 5417. The lower sides of the first side portion 5416 and the second side portion 5417 extend toward the second mounting portion 5412 along the height direction of the housing 10. The first side portion 5416, the second side portion 5417, and the connecting portion 5413 together constitute the first mounting portion 5411.

[0119] The first side portion 5416 and the second side portion 5417 extend toward the second mounting portion 5412. One end of the elastic member 543 abuts against the connecting portion 5413, and the other end of the elastic member 543 is fitted into the positioning post 545 provided on the second mounting portion 5412. The first side portion 5416 and the second side portion 5417 are connected to the second mounting portion 5412 by the fitting and engagement of the engagement groove 5414 and the locking member 5415. When assembling the first mounting portion 5411 and the second mounting portion 5412, the first side portion 5416 and the second side portion 5417 are located outside the two side walls of the second mounting portion 5412 along the thickness direction of the housing 10, forming a position limit for the second mounting portion 5412 and avoiding the elastic member 543 from coming out.

[0120] By providing the first side portion 5416, the second side portion 5417, and the connecting portion 5413 on the cleaning brush base 541 to constitute the first mounting portion 5411, the first mounting portion 5411 has good structural strength, which is advantageous for the attachment of the first mounting portion 5411 and the cleaning brush 542, making the attachment of the cleaning brush 542 stronger and avoiding the cleaning brush 542 from falling off the cleaning brush base 541.

[0121] In some embodiments, as shown in FIGS. 24 and 25, the self-cleaning assembly 50 further includes a mounting groove 57. The mounting groove 57 is provided on the side away from the second mounting portion 5412 of the connecting portion 5413. The cleaning brush 542 is provided in the mounting groove 57. The bottom surface of the mounting groove 57 is flush with the surface of the cleaning brush 542 close to the first reel 52 and is formed in an arc shape, so that when the cleaning brush 542 abuts against the first reel 52, cleaning of the filter 40 can be realized, and foreign matters generated by the cleaning can fall from the surface of the cleaning brush 542 into the cleaning cavity 56.

[0122] In some embodiments, as shown in FIGS. 21, 22 and 25, the self-cleaning assembly 50 is connected to two transmission assemblies 70. The drive assembly 60 is connected to one of the two transmission assemblies 70. The two transmission assemblies 70 are respectively installed at both ends of the self-cleaning assembly 50 along the length direction of the housing 10. The drive assembly 60 is installed at one end of the housing 10 along the length direction of the housing 10.

[0123] The transmission assembly 70 includes a first gear 71, a second gear 72 and a third gear 73. The first gear 71 meshes with the second gear 72. In the two transmission assemblies 70, the two first gears 71 are respectively provided at both ends of the second reel 53, the two second gears 72 are respectively provided at both ends of the first reel 52, and the two third gears 73 are respectively provided at both ends of the cleaning brush base 541.

[0124] The drive assembly 60 includes a first drive motor 61 and a second drive motor 62. The first drive motor 61 is connected to one of the first gear 71 and the second gear 72 and is configured to drive one of the first gear 71 and the second gear 72 to rotate. The second drive motor 62 is connected to the third gear 73 and is configured to drive the third gear 73 to rotate.

[0125] Taking the connection between the first drive motor 61 and the second gear 72 as an example, when the self-cleaning assembly 50 executes the self-cleaning mode, the first drive motor 61 drives the second gear 72 to rotate along the first direction, and rotates the first reel 52 along the first direction. The second gear 72 further rotates the first gear 71 along the second direction, and in turn rotates the second reel 53 along the second direction. The second drive motor 62 drives the cleaning brush base 541 to rotate by driving the third gear 73 to rotate.

[0126] It should be noted that the first direction is opposite to the second direction. When the second reel 53 rotates along the second direction to unwind the filter 40, the first reel 52 rotates along the first direction to wind up the filter 40.

[0127] In this way, under the action of the second reel 53 and the first reel 52, the filter 40 stretched between the second reel 53 and the first reel 52 moves along a preset track, and relative movement occurs between the cleaning brush 542 and the filter 40, realizing the cleaning of the filter 40 by the cleaning brush 542.

[0128] It is understood that both ends of the second reel 53 are respectively connected to the first gear 71, and the second reel 53 realizes rotational connection with the base 51 through the first gear 71. Both ends of the first reel 52 are respectively connected to the second gear 72, and the first reel 52 realizes rotational connection with the base 51 through the second gear 72. Both ends of the cleaning brush base 541 are respectively connected to the third gear 73, and the cleaning brush base 541 realizes rotational connection with the base 51 through the third gear 73.

[0129] Taking one of the self-cleaning Assembly as an example, the self-cleaning assembly 50 is connected to two transmission assemblies 70, and the two transmission assemblies 70 are respectively installed at both ends of the self-cleaning assembly 50. The drive assembly 60 is connected to the transmission assembly 70 close to the side wall of the housing 10. The drive assembly 60 drives the transmission assembly 70 to rotate, and rotates the self-cleaning assembly 50.

[0130] Since the transmission assemblies 70 are respectively provided at both ends of the two self-cleaning assemblies 50, there is no need to distinguish between left and right when attaching the self-cleaning assembly 50 to the housing 10, which is advantageous for improving the attachment efficiency of the self-cleaning assembly 50.

[0131] In some embodiments, as shown in FIG. 33, the drive assembly 60 further includes a housing portion 63 and a bending portion 64. The housing portion 63 is connected to the housing 10. The bending portion 64 is provided on a side of the housing portion 63 along the width direction of the housing 10, and the free end of the bending portion 64 extends toward the base 51 along the length direction of the housing 10. The bending portion 64, the housing portion 63, and the base 51 define a receiving space, and the first drive motor 61 and the second drive motor 62 are provided in the receiving space.

[0132] In some embodiments, as shown in FIGS. 25 and 33, the base 51 further includes two end caps 514 and a connecting plate 516. The two end caps 514 are respectively provided at both ends of the base 51 along the length direction of the housing 10. The connecting plate 516 connects the two end caps 514 and is located on a side away from the back plate 13 of the two end caps. The connecting plate 516 is provided with a gripping portion 5161, and the gripping portion 5161 is provided at the top of the connecting plate 516. As shown in FIG. 27, the gripping portion 5161 is provided with a plurality of concave grooves, and the concave grooves are recessed toward the dust collection box 55 along the height direction of the housing 10. The plurality of concave grooves are continuously provided on the connecting plate 516 along the length direction of the housing 10.

[0133] In some embodiments, as shown in FIGS. 32 and 33, the base 51 further includes a base front cover 513. The base front cover 513 is provided on the front side of the housing 10 and is located below the connecting plate 516. The lower end of the base front cover 513 is detachably connected to the base main body 511A. The upper end of the base front cover 513 is rotatably connected to the base main body 511A.

[0134] The base front cover 513 is configured to open and close the front side of the cleaning cavity 56. Thus, it is advantageous for realizing the cleaning of the cleaning brush 542 in the cleaning cavity 56.

[0135] In some embodiments, as shown in FIG. 32, the base front cover 513 includes a rotation axis 5131. The rotation axis 5131 is provided at both ends along the length direction of the housing 10 of the base front cover 513. The base main body 511A further includes a rotation axis hole, and the rotation axis hole is provided on the base main body 511A. The rotation axis 5131 is fitted and engaged with the rotation axis hole to realize the rotational connection between the base front cover 513 and the base main body 511A. Thus, when the base front cover 513 opens, the lower side of the base front cover 513 is inverted upward to realize the opening of the front side of the cleaning cavity 56.

[0136] In some embodiments, as shown in FIGS. 24 and 25, the cleaning brush assembly 54 further includes at least one second position limiting component 546. The at least one second position limiting component 546 is provided at one end along the length direction of the housing 10 of the cleaning brush base 541. For example, the at least one second position limiting component 546 includes one second position limiting component 546, and the one second position limiting component 546 is provided at one end along the length direction of the housing 10 of the second mounting portion 5412. For example, the at least one second position limiting component 546 includes two second position limiting components 546, and the two second position limiting components 546 are respectively provided at both ends along the length direction of the housing 10 of the second mounting portion 5412.

[0137] As shown in FIG. 34, 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. The second position limiting component 546 is configured to abut against the stopper portion 547 to limit the rotation angle of the cleaning brush assembly 54.

[0138] The second position limiting component 546 is configured to further rotate to the first position, so that the first position limiting protrusion 5461 abuts against the stopper portion 547, and the cleaning brush 542 does not contact the first reel 52. Further, the second position limiting component 546 is configured to further rotate to the second position, so that the second position limiting protrusion 5462 abuts against the stopper portion 547, and the cleaning brush 542 abuts against the first reel 52.

[0139] In some embodiments, as shown in FIG. 34, the stopper portion 547 includes a first stopper surface 5471 and a second stopper surface 5472. When the second position limiting component 546 rotates to the first position, the first position limiting protrusion 5461 abuts against the first stopper surface 5471, and the cleaning brush 542 does not contact the first reel 52. When the second position limiting component 546 rotates to the second position, the second position limiting protrusion 5462 abuts against the second stopper surface 5472, and the cleaning brush 542 abuts against the first reel 52 to remove foreign matter on the filter 40.

[0140] One end of the first stopper surface 5471 is connected to one end of the second stopper surface 5472, and the first stopper surface 5471 is located below the second stopper surface 5472. The other end of the first stopper surface 5471 extends obliquely downward in a direction approaching the back plate 13 along the thickness direction of the housing 10. The other end of the second stopper surface 5472 extends obliquely upward in a direction approaching the back plate 13 along the thickness direction of the housing 10.

[0141] During the process in which the cleaning brush base 541 rotates counterclockwise and the second position limiting component 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 separating therefrom. Thereafter, the second position limiting protrusion 5462 abuts against the second stopper surface 5472, so that the cleaning brush 542 abuts against the first reel 52 to clean the filter 40.

[0142] Thus, providing the first stopper surface 5471 and the second stopper surface 5472 on the stopper portion 547 is advantageous for the contact 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 contact between the second position limiting component 546 and the stopper portion 547, and reduces the rotational error of the cleaning brush assembly 54.

[0143] In some embodiments, the cleaning component 59 is provided on the side wall of the cleaning cavity 56 on the side facing the stopper portion 547. When the second position limiting component 546 reciprocates between the first position and the second position, the cleaning component 59 is configured to clean foreign matter on the cleaning brush 542.

[0144] In some embodiments, as shown in FIGS. 23 and 33, the base front cover 513 further includes an avoidance section 5132 and an extending section 5133. The avoidance section 5132 is located between the two end covers 514, and the avoidance section 5132 protrudes in a direction away from the central axis of the cleaning brush 542. The rotating shaft 5131 is connected to the side of the avoidance section 5132 away from the cleaning brush 542. The extending section 5133 extends along the height direction of the housing 10. The upper end of the extending section 5133 is connected to the lower end of the avoidance section 5132, and the lower end of the extending section 5133 fits and engages with the dust collection box 55.

[0145] In some embodiments, as shown in FIG. 23, the base 51 further includes a base rear cover 515. The base rear cover 515 is installed between the two end covers 514, and the base rear cover 515 is installed on the rear side of the cleaning cavity 56 along the thickness direction of the housing 10. The base rear cover 515 faces the base front cover 513, and the base rear cover 515 is rotatably connected to the base main body 511A. The base rear cover 515 is provided with a connection groove, and the connection groove is provided on the base rear cover 515. The side of the connection groove facing the cleaning brush assembly 54 is open. A sealing material is provided in the connection groove.

[0146] When closing the base rear cover 515 to close the rear side of the cleaning cavity 56, the sealing material is configured to seal the gap between the base rear cover 515 and the first reel 52. When opening the base rear cover 515 to open the rear side of the cleaning cavity 56, the sealing material and the first reel 52 are separated from each other.

[0147] The rear side of the sealing material is located within the connection groove, and the front side of the sealing material extends out of the connection groove and abuts against the first reel 52. For example, the sealing material is a sponge.

[0148] In this way, providing the connection groove in the base rear cover 515 and providing the sealing material within the connection groove can cause the first opening 563 of the cleaning cavity 56 to abut against the first reel 52 via the sealing material, forming a seal for the first opening 563, which is advantageous for avoiding dust within the cleaning cavity 56 from flowing into the fan assembly 30 or the indoor heat exchanger 20, and extending the service life of the indoor unit 100A of the air conditioner.

[0149] In some embodiments, as shown in FIG. 23, the width of the second opening 564 is provided to be inclined from top to bottom along the height direction of the housing 10, that is, the cross-sectional area of the second opening 564 decreases from top to bottom along the height direction of the housing 10. The second opening 564 is located at the bottom of the cleaning cavity 56. The opening of the end of the second opening 564 closer to the cleaning cavity 56 is larger, and the opening of the end of the second opening 564 closer to the dust collection box 55 is smaller.

[0150] In some embodiments, as shown in FIG. 23, the cleaning cavity 56 further includes a first extending section 561 and a second extending section 562. The first extending section 561 and the second extending section 562 are provided at the lower part of the cleaning cavity 56. The first extending section 561 is connected to the front wall of the cleaning cavity 56, the second extending section 562 is connected to the rear wall of the cleaning cavity 56, and a second opening 564 is defined between the first extending section 561 and the second extending section 564. The distance between the first extending section 561 and the second extending section 562 decreases from top to bottom along the height direction of the housing 10.

[0151] The other ends of the first extending section 561 and the second extending section 562 are flush with the bottom of the cleaning cavity 56, so that the first extending section 561 and the second extending section 562 avoid interfering with the installation of the dust collection box 55.

[0152] The fact that the distance between the first extending section 561 and the second extending section 562 decreases from top to bottom along the height direction of the housing 10 is advantageous for dropping the foreign matter brushed off by the cleaning brush 542 into the dust collection box 55, reducing the possibility that the foreign matter accumulates in the cleaning cavity 56 or the second opening 564, and reducing the risk that the foreign matter drops into areas other than the dust collection box 55. Further, the entire first extending section 561 and the second extending section 562 are located below the cleaning brush 542, which is advantageous for guiding the foreign matter cleaned from the filter 40 to fall into the dust collection box 55 and avoiding the accumulation of the foreign matter in the cleaning cavity 56.

[0153] In some embodiments, as shown in FIGS. 23 and 25, the self-cleaning assembly 50 further includes an insertion portion 58. The insertion portion 58 is provided on the connection plate 516 and may move along the length direction of the housing 10 with respect to the connection plate 516.

[0154] Providing the insertion part 58 in the self-cleaning assembly 50 is advantageous for detaching the self-cleaning assembly 50 and improves the efficiency of detaching the self-cleaning assembly 50.

[0155] In some embodiments, as shown in FIG. 35, the fan assembly 30 includes an indoor fan 31 and an indoor fan motor 32. The indoor fan 31 is connected to the indoor fan motor 32. The indoor fan motor 32 is configured to drive the rotation of the indoor fan 31.

[0156] In some embodiments, as shown in FIG. 35, the indoor unit 100A of the air conditioner further includes a fresh air assembly 90. The fresh air assembly 90 includes a fresh air fan 91 and a fresh air scroll casing 92. The fresh air scroll casing 92 is installed in the housing 10. The fresh air scroll casing 92 includes a fresh air suction port 921 and a fresh air outlet 922. The fresh air suction port 921 is provided at one end of the fresh air scroll casing 92, and the fresh air outlet 922 is provided at the other end of the scroll casing. The fresh air fan 91 is installed in the fresh air scroll casing 92, and the fresh air fan 91 is configured to suck in and pump out outdoor air.

[0157] In some embodiments, as shown in FIG. 35, the indoor heat exchanger 20 includes a heat exchange duct 21. The heat exchange duct 21 is provided in the indoor heat exchanger 20 and communicates with the air outlet.

[0158] In some embodiments, as shown in FIG. 36, the indoor unit 100A of the air conditioner further includes an indoor fan motor drive assembly 81, a control assembly 82, a memory assembly 83, and a timer 84. The indoor fan motor drive assembly 81 is configured to control the start and stop of the indoor fan motor 32 and collect the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn. The memory assembly 83 is configured to store the target current value Im. The target current value Im is the corresponding current value when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter in the filter 40.

[0159] The timer 84 is configured to measure time. The control assembly 82 is connected to the indoor fan motor drive assembly 81, the self-cleaning assembly 50, the memory assembly 83, and the timer 84 respectively, so as to control the indoor fan motor drive assembly 81, the self-cleaning assembly 50, and the timer 84.

[0160] In some embodiments, as shown in FIG. 37, the control assembly 82 is configured to execute steps S101 to S105.

[0161] In step S101, a signal representing the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn, which is collected by the indoor fan motor drive assembly 81, is received.

[0162] In step S102, it is determined whether the current current value In is smaller than the difference between the target current value Im and the set current value I0 when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter in the filter 40. If it is "YES", step S103 is executed; if it is "NO", it returns to step S101 and is executed again.

[0163] In some embodiments, when the control assembly 82 receives a signal representing the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn, which is collected by the indoor fan motor drive assembly 81, the control assembly 82 determines the magnitude relationship between the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn and the target current value Im when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter in the filter 40.

[0164] When the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn is smaller than the difference between the target current value Im when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter on the filter 40 and the set current value I0, it indicates that there is relatively more foreign matter attached to the filter 40 and the filter 40 needs to be cleaned.

[0165] When the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn is equal to or greater than the target current value Im when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter on the filter 40, it indicates that no foreign matter is attached to the filter 40.

[0166] Note that the set current value I0 is a value preset in the control assembly 82. The set current value I0 is an arbitrary value from 1 mA to 3 mA, for example, 1 mA, 2 mA, or 3 mA. The set current value I0 may be adjusted according to actual needs, and the present disclosure does not limit this.

[0167] In step S103, control is performed so that the timer 84 measures time to obtain the duration Tn, and it is determined whether the duration Tn is equal to or greater than the set time threshold T0. If it is "YES", step S104 is executed. If it is "NO", step S105 is executed.

[0168] In some embodiments, when the control assembly 82 determines that the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn is smaller than the difference between the target current value Im when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter on the filter 40 and the set current value I0, the control assembly 82 controls the timer 84 to measure time to obtain the duration Tn, and determines the magnitude relationship between the duration Tn and the set time threshold T0.

[0169] When the current current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn is smaller than the difference between the target current value Im when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter on the filter 40 and the set current value I0, and when, in this state, the continuous time Tn is equal to or greater than the set time threshold T0, it indicates that the indoor fan motor 32 has been in an operating state where the current current value In is lower than the difference between the target current value Im and the set current value I0 for a long period. That is, the indoor unit 100A of the air conditioner has been operating for a long time with a large amount of foreign matter adhering to the filter 40. Therefore, it is necessary to clean the filter 40 to ensure the cooling or heating effect of the indoor unit 100A of the air conditioner.

[0170] Note that the set time threshold T0 is a value preset in the control assembly 82. The set time threshold T0 may be adjusted according to actual needs, and the present disclosure does not limit this. For example, the set time threshold T0 includes a first set time threshold T1, a second set time threshold T2, and a third set time threshold T3. The first set time threshold T1 is greater than the second set time threshold T2, and the second set time threshold T2 is greater than the third set time threshold T3. For example, the first set time threshold T1 is 15 min, the second set time threshold T2 is 10 min, and the third set time threshold T3 is 5 min.

[0171] In step S104, the continuous time Tn is cleared to zero, and control is performed so that the self-cleaning assembly 50 cleans the filter 40.

[0172] In step S105, the continuous time Tn is cleared to zero, and the process returns to step S102 and is executed again.

[0173] In some embodiments, when the current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn is less than the difference between the target current value Im and the set current value I0 when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter in the filter 40, and when the duration Tn is determined to be equal to or greater than the set time threshold T0, the control assembly 82 determines that the filter 40 needs to be cleaned, clears the duration Tn to zero, and controls the self-cleaning assembly 50 to clean the filter 40.

[0174] When the control assembly 82 determines that the current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn is less than the difference between the target current value Im and the set current value I0 when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter in the filter 40, and when the duration Tn is determined to be less than the set time threshold T0, the control assembly 82 clears the duration Tn to zero, controls the indoor unit 100A of the air conditioner to continue operating, and then determines again the magnitude relationship between the current value In when the indoor fan motor 32 is operating at the current operating rotation speed Rn and the target current value Im when the indoor fan motor 32 is operating at the current operating rotation speed Rn with no foreign matter in the filter 40.

[0175] In some embodiments, the indoor unit 100A of the air conditioner further includes a cleaning instruction lamp. The cleaning instruction lamp is provided on the housing 10 and is configured to prompt the user whether to clean the filter 40.

[0176] In some embodiments, as shown in FIG. 38, before step S104, the control assembly 82 is further configured to execute steps S201 to S203.

[0177] In step S201, the current local time Ti is obtained, and it is determined whether the current local time Ti is within the set time range Ty. If it is "YES", step S202 is executed; if it is "NO", step S203 is executed.

[0178] In step S202, the lighting of the cleaning instruction lamp is controlled.

[0179] In step S203, the extinguishing of the cleaning instruction lamp is controlled.

[0180] In some embodiments, when the current current value In when the indoor fan motor 32 is operating at the current operating rotational speed Rn is smaller than the difference between the target current value Im and the set current value I0 when the indoor fan motor 32 is operating at the current operating rotational speed Rn with no foreign matter on the filter 40, and also when the duration Tn is greater than the set time threshold T0, the control assembly 82 acquires the current time Ti at the installation location of the air conditioner indoor unit 100A, and also determines the magnitude relationship between the current local time Ti and the set time range Ty. When the current local time Ti is within the set time range Ty, in order to prompt the user to clean the filter 40, the lighting of the cleaning instruction lamp is controlled. When the current local time Ti is outside the set time range Ty, the extinguishing of the cleaning instruction lamp is controlled.

[0181] Note that the set time range Ty is a value preset in the control assembly 82. The set time range Ty may be adjusted according to actual needs, and the present disclosure does not limit this. For example, the set time range Ty is 06:00~20:00.

[0182] When the control assembly 82 determines that the filter 40 needs to be cleaned, the control assembly 82 may acquire the current time Ti at the installation location of the air conditioner indoor unit 100A via wireless communication technology. When the installation location of the air conditioner indoor unit 100A is Beijing and the current time Ti is during the day, that is, between 06:00 and 20:00, the control assembly 82 controls the lighting of the cleaning instruction lamp in order to prompt the user that the filter 40 needs to be cleaned. In this case, the user can manually select whether to activate the self-cleaning function of the air conditioner indoor unit 100A.

[0183] When the installation location of the indoor unit 100A of the air conditioner is in Beijing and the current time Ti is at night, that is, between 20:00 and 06:00, the control assembly 82 controls the cleaning instruction lamp to turn off and controls the operation of the indoor unit 100A of the air conditioner to continue.

[0184] In some embodiments, when the indoor unit 100A of the air conditioner is adapted to the air conditioner, the air conditioner is provided with a compressor. The indoor unit 100A of the air conditioner further includes a deflector, and the deflector is provided at the air outlet to open and close the air outlet. For example, when the indoor unit 100A of the air conditioner operates, the deflector opens and the air outlet is exposed, so that the air heat-exchanged by the indoor heat exchanger 20 flows into the room from the air outlet.

[0185] The deflector is rotatable with respect to the housing 10 to adjust the direction of the air flowing out of the air outlet, so that the air can flow to multiple positions in the room.

[0186] In some embodiments, as shown in FIG. 39, before step S104, the control assembly 82 is further configured to execute step S301.

[0187] In step S301, control is performed to stop the operation of the compressor, control is performed to stop the operation of the fan assembly 30, and control is performed to close the deflector.

[0188] For example, before the control assembly 82 controls the self-cleaning assembly 50 to clean the filter 40, the control assembly 82 controls to stop the operation of the compressor, controls to stop the operation of the fan assembly 30, and controls to close the deflector.

[0189] In some embodiments, the control assembly 82 is further configured to control the rotation of the first drive motor 61 and the second drive motor 62, thereby controlling the self-cleaning assembly 50 to clean the filter 40. For example, the control assembly 82 controls the rotation of the second drive motor 62 to rotate the cleaning brush 542, thereby cleaning foreign matter on the filter 40. The control assembly 82 controls the first drive motor 61 to rotate along the first direction, thereby rotating the second reel 53 along the first direction, and thereby winding up the filter 210 on the second reel 53.

[0190] Furthermore, when the self-cleaning assembly 50 cleans the filter 40, through the control of the control assembly 82, it is not necessary to change the rotation direction of the first drive motor 61 by manual operation of the user, which is advantageous for the automation of the self-cleaning assembly 50.

[0191] In some embodiments, as shown in FIG. 40, when the control assembly 82 controls the self-cleaning assembly 50 to clean the filter 40, the control assembly 82 is further configured to execute steps S401 to S408. That is, step S104 includes steps S401 to S409.

[0192] In step S401, the rotation of the second drive motor 62 is controlled, and the first pulse number N1 of the second drive motor 62 is counted.

[0193] In some embodiments, in the process of the control assembly 82 controlling the rotation of the second drive motor 62, the first pulse number N1 of the second drive motor 62 is counted. That is, the control assembly 82 controls the second drive motor 62 to start rotating to clean the foreign matter on the filter 40, and calculates the first pulse number N1 of the second drive motor 62 to obtain the number of times the filter 40 is cleaned by the cleaning brush 542.

[0194] In step S402, it is determined whether the first pulse number N1 is greater than or equal to the first set pulse number N10. If it is "YES", step S403 is executed. If it is "NO", the process returns to step S401 and is executed again.

[0195] In step S403, the first drive motor 61 is controlled to rotate along the first direction, and the second pulse number N21 during which the first drive motor 61 rotates along the first direction is counted.

[0196] In some embodiments, the control assembly 82 counts the first pulse number N1 and determines the magnitude relationship between the first pulse number N1 and the first set pulse number N10. When the first pulse number N1 is greater than or equal to the first set pulse number N10, the control assembly 82 controls the first drive motor 61 to rotate along the first direction, and counts the second pulse number N21 during which the first drive motor 61 rotates along the first direction.

[0197] Note that the first set pulse number N10 is a value preset in the control assembly 82 and may be adjusted according to actual needs. The present disclosure does not limit this. For example, the first set pulse number N10 is any value from 8 to 12. For example, the first set pulse number N10 is 8, 10, or 12.

[0198] In step S404, it is determined whether the second pulse number N21 is greater than or equal to the second set pulse number N20. If it is "YES", step S405 is executed. If it is "NO", the process returns to step S403 and is executed again.

[0199] In step S405, the first drive motor 61 is controlled to rotate along the second direction, and the third pulse number N31 during which the first drive motor 61 rotates along the second direction is counted.

[0200] In step S406, it is determined whether the number of third pulses N31 is greater than or equal to the second set number of pulses N20. If it is "YES", step S407 is executed. If it is "NO", the process returns to step S405 and is executed again.

[0201] Note that the second set number of pulses N20 is a value preset in the control assembly 82 and may be adjusted according to actual needs. The present disclosure does not limit this. For example, the second set number of pulses N20 is any value from 1100 to 1300. For example, the second set number of pulses N20 is 1100, 1200, or 1300.

[0202] In some embodiments, when the self-cleaning assembly 50 cleans the filter 40, the control assembly 82 controls the rotation of the second drive motor 62 at 200 pulses per second, and the control assembly 82 controls the rotation of the first drive motor 61 at 110 pulses per second. That is, the number of pulses for controlling the rotation of the second drive motor 62 is greater than the number of pulses for controlling the rotation of the first drive motor 61. That is, the rotation speed of the cleaning brush 542 is greater than the rotation speed of the second reel 53.

[0203] In step S407, the number of first pulses N1, the number of second pulses N21, and the number of third pulses N31 are cleared to zero, and the number of reciprocations Nt of the filter 40 moving along a preset track is calculated.

[0204] In step S408, it is determined whether the number of reciprocations Nt is greater than or equal to the set number Ns. If it is "YES", step S409 is executed. If it is "NO", the process returns to step S401 and is executed again.

[0205] In step S409, the control is such that the self-cleaning assembly 50 stops cleaning the filter 40.

[0206] In some embodiments, when the number of third pulses N22 is greater than or equal to the second set number of pulses N20, the number of first pulses N1, the number of second pulses N21, and the number of third pulses N22 are cleared to zero. The control assembly 82 controls the rotation of the second drive motor 62, controls the first drive motor 61 to repeat the rotation along the first direction and the rotation along the second direction, and the filter 40 calculates the number of reciprocations Nt of winding up and winding down on the second reel 53.

[0207] When the reciprocating motion of the filter 40 reaches the set number of times Ns, the filter 40 repeats a plurality of cleanings by the cleaning brush 542 and becomes relatively clean. That is, when the number of reciprocations Nt is greater than or equal to the set number of times Ns, the self-cleaning assembly 50 indicates that the cleaning of the filter 40 has been completed.

[0208] Note that the set number of times Ns is a value preset in the control assembly 82, and the set number of times Ns may be adjusted according to actual needs, and the present disclosure does not limit this. For example, the set number of times Ns is any value between 8 and 12. For example, the set number of times Ns is 8, 10, or 12.

[0209] It should be understood by those skilled in the art that the disclosure scope of the present invention is not limited to the above specific embodiments, and modifications and substitutions can be made to specific elements of the embodiments without departing from the gist of the present application. The scope of the present disclosure is limited by the claims.

Claims

1. An indoor unit of an air conditioner, comprising: a housing having a suction port and a blowout port; a filter configured to cover the suction port and filter foreign matter in indoor air; a self-cleaning assembly configured to remove foreign matter on the filter, wherein the self-cleaning assembly includes a base, a first reel, a second reel, a cleaning brush assembly, a cleaning component, and at least one position-limiting component; the base is connected to the housing; the first reel is rotatably connected to the base and connected to one end of the filter; the second reel is rotatably connected to the base and connected to the other end of the filter; the cleaning brush assembly is installed in the base and located on a side of the second reel away from the filter, and the cleaning brush assembly includes: a cleaning brush base rotatably connected to the base; a cleaning brush movably installed on the cleaning brush base and abutting against a part of the filter, the cleaning brush being configured to clean foreign matter on the filter during a process in which the filter is wound around the first reel or the second reel or during a process in which the filter is released from the first reel or the second reel; an elastic member provided between the cleaning brush base and the cleaning brush; the cleaning component is provided on an inner wall of the base and located on one side of the cleaning brush assembly, and the cleaning component is configured to clean foreign matter on the cleaning brush during a process in which the cleaning brush base rotates; the at least one position-limiting component is provided on an inner wall of the base and located on at least one of a side close to the filter and a side away from the filter of the cleaning component, and the position-limiting component is configured to slowly elastically deform the elastic member by abutting against the cleaning brush when the elastic member tends to be compressed or stretched during a process in which the cleaning brush base rotates; An indoor unit of an air conditioner.

2. The base defines a cleaning cavity, wherein the cleaning cavity includes: a first opening, a side of the cleaning cavity close to the filter is open, and the first opening is formed as the first opening; A second opening, wherein a side of the cleaning cavity away from the filter is open, and a second opening in which the second opening is formed. The self-cleaning assembly further includes a dust collection box, and the dust collection box is installed at the second opening and configured to collect foreign matter in the cleaning cavity. The indoor unit of an air conditioner according to claim 1.

3. The position-limiting component includes at least one of a first position-limiting part or a second position-limiting part. The first position-limiting part is located on a side of the cleaning component close to the filter. A first end of the first position-limiting part is close to the cleaning component, and a second end of the first position-limiting part extends toward the first opening. The second position-limiting part is located on a side of the cleaning component away from the filter. A first end of the second position-limiting part is close to the cleaning component, and a second end of the second position-limiting part extends toward the second opening. The indoor unit of an air conditioner according to claim 2.

4. In a direction from the second end of the first position-limiting part to the first end of the first position-limiting part, the width of the first position-limiting part in the thickness direction of the indoor unit of the air conditioner decreases. The cleaning brush is further configured to move in a direction away from the center of the cleaning brush base when rotating from the second position to the first position. The first position is the position when the cleaning brush abuts against the filter of the second reel, and the second position is the position when the cleaning brush abuts against the first position-limiting part. The indoor unit of an air conditioner according to claim 3.

5. In a direction from the second end of the second position-limiting part to the first end of the second position-limiting part, the width of the second position-limiting part in the thickness direction of the indoor unit of the air conditioner decreases. The cleaning brush is further configured to first move in a direction away from the center of the cleaning brush base and then move in a direction toward the center of the cleaning brush base when rotating from the third position to the second position. The second position is the position when the cleaning brush abuts against the first position-limiting part, and the third position is the position when the cleaning brush abuts against the second position-limiting part. The indoor unit of an air conditioner according to claim 3 or claim 4.

6. The surface of the first position limiting part that abuts against the cleaning brush is one of a flat surface and an arc surface, and the surface of the second position limiting part that abuts against the cleaning brush is one of a flat surface and an arc surface. The indoor unit of an air conditioner according to claim 3 or claim 4.

7. The second position limiting part includes a first sub-position limiting part with one end connected to the inner wall of the cleaning cavity, and a second sub-position limiting part connected to the other end of the first sub-position limiting part, wherein the distance between the center of the cleaning brush base and the first sub-position limiting part is greater than the distance between the center of the cleaning brush base and the second sub-position limiting part. The indoor unit of an air conditioner according to claim 3 or claim 4.

8. Along the height direction of the base, the second end of the second position limiting part is lower than the cleaning brush assembly. The indoor unit of an air conditioner according to claim 3 or claim 4.

9. The thickness of the position limiting part in the length direction of the base is any value within a preset range. The indoor unit of an air conditioner according to any one of claims 1 to 4.

10. The at least one position limiting part includes a plurality of position limiting parts, the plurality of position limiting parts are provided at intervals along the length direction of the base, and are respectively located at both ends of the base in the length direction. The indoor unit of an air conditioner according to any one of claims 1 to 4.

11. The cleaning brush base includes a first mounting part, and a second mounting part, wherein the first mounting part is provided on the second mounting part. The first end of the elastic material abuts against the first mounting part, the second end of the elastic material abuts against the second mounting part, and the cleaning brush is provided on the side of the first mounting part away from the second mounting part. The indoor unit of an air conditioner according to any one of claims 1 to 4.

12. The cleaning brush assembly further includes a mounting cavity, the side of the second mounting part facing the cleaning brush is open, the first mounting part is provided on the open side of the second mounting part, the first mounting part and the second mounting part together define the mounting cavity, and the elastic material is installed in the mounting cavity. The indoor unit of an air conditioner according to claim 11.

13. The cleaning brush base includes at least one engaging groove, and ​ At least one engaging member provided on at least one of both side walls along the width direction of the housing of the second mounting portion corresponding to the at least one engaging groove, and By engaging the at least one engaging member with the at least one engaging groove, the first mounting portion and the second mounting portion are movably connected in the height direction of the housing, The indoor unit of an air conditioner according to claim 11.

14. The at least one engaging groove includes a plurality of engaging grooves, the at least one engaging member includes a plurality of engaging members, the plurality of engaging members respectively correspond to the plurality of engaging grooves, and are provided on both side walls along the width direction of the housing of the second mounting portion, By engaging the plurality of engaging members with the plurality of engaging grooves respectively, the first mounting portion and the second mounting portion are movably connected in the height direction of the housing, The indoor unit of an air conditioner according to claim 13.

15. The elastic material includes a spring, the cleaning brush assembly further includes a positioning post provided on one of the first mounting portion and the second mounting portion, and the spring is installed by being fitted into the positioning post, The indoor unit of an air conditioner according to claim 11.

16. The indoor unit of the air conditioner is An indoor heat exchanger installed in the housing and configured to exchange heat with indoor air entering from the suction port, A fan assembly installed on the side of the indoor heat exchanger away from the suction port and configured to allow indoor air to flow in from the suction port, exchange heat with the indoor heat exchanger, and then be sent out from the blowout port, A drive assembly installed on the housing, At least one transmission assembly installed in the housing, configured to move the self-cleaning assembly under the drive of the drive assembly and clean foreign matter attached to the filter by the self-cleaning assembly, and further includes at least one transmission assembly, The indoor unit of an air conditioner according to any one of claims 1 to 4.

17. The drive assembly includes a first drive motor and a second drive motor, The transmission assembly is A first gear provided at one end of the first reel along the length direction of the housing, A second gear provided at one end of the second reel along the length direction of the housing, the first gear is a second gear meshing with the second gear, A third gear provided at one end of the housing of the cleaning brush base along the length direction of the housing, wherein the second drive motor is a third gear connected to the third gear, The first drive motor is connected to one of the first gear or the second gear and is configured to drive the rotation of either the first gear or the second gear. The second drive motor is connected to the third gear and is configured to drive the rotation of the third gear. The indoor unit of an air conditioner according to claim 16.

18. The at least one transmission assembly includes two transmission assemblies, and the two transmission assemblies are respectively provided at both ends of the housing of the self-cleaning assembly along the length direction of the housing. The indoor unit of an air conditioner according to claim 17.

19. The fan assembly includes an indoor fan and an indoor fan motor. The indoor unit of the air conditioner An indoor fan motor drive assembly configured to control the start and stop of the indoor fan motor and collect the current current value when operating at the current operating rotational speed of the indoor fan motor. A parameter storage assembly configured to store a target current value when the indoor fan motor is operating at the current operating rotational speed with no foreign matter in the filter. A timer configured to measure time. And a control assembly, and the control assembly Receives a signal representing the current current value of the indoor fan motor collected by the indoor fan motor drive assembly. When it is determined that the current current value is smaller than the difference between the target current value and the set current value, controls the timer to measure time. When it is determined that the measured time of the timer is equal to or greater than a set time threshold, controls to clear the measured time of the timer to zero and controls the self-cleaning assembly to clean the filter. The indoor unit of an air conditioner according to claim 16.

20. The drive assembly includes a first drive motor and a second drive motor. The control assembly further When the control assembly controls the self-cleaning assembly to clean the filter. Controls the rotation of the second drive motor and counts the first number of pulses of the second drive motor. When it is determined that the number of the first pulses is equal to or greater than a first set number of pulses, control is performed so that the first drive motor rotates along a first direction, and the number of second pulses during which the first drive motor rotates along the first direction is counted. When it is determined that the number of the second pulses is equal to or greater than a second set number of pulses, control is performed so that the first drive motor rotates along a second direction, and the number of third pulses during which the first drive motor rotates along the second direction is counted, where the first direction is opposite to the second direction. When it is determined that the number of the third pulses is equal to or greater than the second set number of pulses, the number of the first pulses, the number of the second pulses, and the number of the third pulses are cleared to zero, and the number of reciprocations during which the filter moves along a preset trajectory is calculated. When it is determined that the number of reciprocations is equal to or greater than a set number of times, control is performed so that the self-cleaning assembly stops cleaning the filter, and is configured as such. The indoor unit of an air conditioner according to claim 19.

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