Air conditioner indoor unit

Abstract

Provided is an air conditioner indoor unit. The air conditioner indoor unit comprises a shell, a filter screen, and a self-cleaning assembly. The self-cleaning assembly comprises a base, a first reel, a second reel, a cleaning brush assembly, a cleaning piece, and at least one limiting piece. The cleaning brush assembly comprises a cleaning brush base, a cleaning brush, and an elastic piece. The cleaning brush is configured to clean the sundries on the filter screen during the winding or releasing of the filter screen by the first reel or the second reel. The at least one limiting piece is arranged on the inner wall of the base and located on at least one side of the cleaning piece close to or away from the filter screen. The limiting piece is configured to abut against the cleaning brush when the elastic piece has a compression or stretching trend during the rotation of the cleaning brush base, so that the elastic piece slowly undergoes elastic deformation.

Description

[0001] This application claims priority to PCT International Application No. PCT / CN2023 / 096723, filed on May 29, 2023, which in turn claims priority to Chinese Patent Application No. 202210618975.5, filed on May 31, 2022; Chinese Patent Application No. 202223608409.0, filed on December 30, 2022; and Chinese Patent Application No. 202223602180.X, filed on December 30, 2022. This application claims priority to PCT International Application No. PCT / CN2023 / 096723, filed on May 29, 2023; This application claims priority to PCT International Application No. PCT / CN2023 / 105581, filed on July 3, which claims priority to Chinese Patent Application No. 202321340922.8, filed on May 29, 2023; and to Chinese Patent Application No. 202321430623.3, filed on June 6, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of air conditioning technology, and in particular to an indoor air conditioning unit. Background Technology

[0003] In daily life, air conditioners have become one of the most commonly used household appliances. As part of the air conditioning system, the indoor unit is installed indoors and used to exchange heat with indoor air to raise or lower the indoor temperature. Summary of the Invention

[0004] An indoor air conditioning unit is provided. The indoor air conditioning unit includes a housing, a filter, and a self-cleaning assembly. The housing includes an air inlet and an air outlet. The filter covers the air inlet and is configured to filter impurities in indoor air. The self-cleaning assembly is configured to remove impurities from the filter. The self-cleaning assembly includes a base, a first roller, a second roller, a cleaning brush assembly, a cleaning member, and at least one limiting member. The base is connected to the housing; the first roller is rotatably connected to the base and connected to one end of the filter. The second roller is rotatably connected to the base and connected to the other end of the filter. The cleaning brush assembly is disposed within the base and located on the side of the second roller away from the filter. The cleaning brush assembly includes a cleaning brush base, a cleaning brush, and an elastic member. The cleaning brush base is rotatably connected to the base. The cleaning brush is movably disposed on the cleaning brush base and abuts against a portion of the filter screen. The cleaning brush is configured to clean debris from the filter screen as it is wound or unwound by the first or second reel. The elastic member is disposed between the cleaning brush base and the cleaning brush. The cleaning member is disposed on the inner wall of the base and located on one side of the cleaning brush assembly. The cleaning member is configured to clean debris from the cleaning brush as the cleaning brush base rotates. At least one limiting member is disposed on the inner wall of the base and located on at least one side of the cleaning member, near or away from the filter screen. The limiting member is configured to abut against the cleaning brush when the elastic member tends to be compressed or extended during the rotation of the cleaning brush base, so that the elastic member slowly undergoes elastic deformation. Attached Figure Description

[0005] Figure 1 This is a perspective view of an indoor air conditioning unit according to some embodiments;

[0006] Figure 2 A perspective view of the housing of an indoor air conditioning unit according to some embodiments;

[0007] Figure 3 for Figure 2 A magnified view of a section at point A in the middle circle;

[0008] Figure 4 This is a front view of an indoor air conditioning unit according to some embodiments;

[0009] Figure 5 for Figure 4 Cross-sectional view along the BB direction;

[0010] Figure 6 A perspective view of a base for an indoor air conditioning unit according to some embodiments;

[0011] Figure 7AThis is a cross-sectional view of the base of an indoor air conditioning unit according to some embodiments;

[0012] Figure 7B A perspective view of a first and second reel of an air conditioner indoor unit according to some embodiments;

[0013] Figure 8A This is a structural diagram of a first portion of a first spool or a third portion of a second spool of an air conditioner indoor unit according to some embodiments;

[0014] Figure 8B This is a structural diagram of the second portion of the first reel or the fourth portion of the second reel of an air conditioner indoor unit according to some embodiments;

[0015] Figure 9 This is a perspective view of an indoor air conditioning unit after the panel has been removed, according to some embodiments.

[0016] Figure 10 This is a perspective view of an indoor air conditioning unit after removing the panel and housing, according to some embodiments.

[0017] Figure 11 for Figure 10 A magnified view of a section at point C in the middle circle;

[0018] Figure 12 A perspective view of another base for an air conditioner indoor unit according to some embodiments;

[0019] Figure 13 This is a structural diagram of a connecting rod, transmission assembly, and drive assembly for an air conditioner indoor unit according to some embodiments;

[0020] Figure 14 for Figure 13 A magnified view of a section at point D in the center circle;

[0021] Figure 15 This is a perspective view of an indoor air conditioning unit after removing a panel and a base, according to some embodiments.

[0022] Figure 16 for Figure 15 A magnified view of a section at point E in the center circle;

[0023] Figure 17 This is a structural diagram of a filter for an indoor air conditioning unit according to some embodiments;

[0024] Figure 18 A block diagram of another air conditioner indoor unit according to some embodiments;

[0025] Figure 19 This is a perspective view of another air conditioner indoor unit according to some embodiments;

[0026] Figure 20 An exploded view of the housing and self-cleaning assembly of another air conditioner indoor unit according to some embodiments;

[0027] Figure 21 An exploded view of a self-cleaning assembly for another air conditioner indoor unit according to some embodiments;

[0028] Figure 22 for Figure 21 A magnified view of a portion of point P in the middle circle;

[0029] Figure 23 A cross-sectional view of a self-cleaning assembly for another air conditioner indoor unit according to some embodiments;

[0030] Figure 24 An exploded view of a cleaning brush assembly for another air conditioner indoor unit according to some embodiments;

[0031] Figure 25 This is another exploded view of the housing and self-cleaning assembly of another air conditioner indoor unit according to some embodiments;

[0032] Figure 26 This is a cross-sectional view of another indoor unit according to some embodiments;

[0033] Figure 27 The corresponding position when the cleaning brush is in the first position Figure 26 A magnified view of a portion of the center circle Q;

[0034] Figure 28 The corresponding position when the cleaning brush is in the second position Figure 26 A magnified view of a portion of the center circle Q;

[0035] Figure 29 The corresponding position when the cleaning brush is in the third position Figure 26 A magnified view of a portion of the center circle Q;

[0036] Figure 30 This is a structural diagram of the base front cover according to some embodiments;

[0037] Figure 31 This is a structural diagram of the base front cover of some embodiments from another perspective;

[0038] Figure 32 An exploded view of a self-cleaning assembly for another air conditioner indoor unit according to some embodiments;

[0039] Figure 33 An exploded view of a drive assembly for another air conditioner indoor unit according to some embodiments;

[0040] Figure 34A perspective view of a stop portion of another air conditioning indoor unit according to some embodiments;

[0041] Figure 35 Another block diagram of another air conditioner indoor unit according to some embodiments;

[0042] Figure 36 Another block diagram of another air conditioner indoor unit according to some embodiments;

[0043] Figure 37 A flowchart illustrating an execution method of a control component for another air conditioner indoor unit according to some embodiments;

[0044] Figure 38 A flowchart illustrating another execution method of a control component for another air conditioner indoor unit according to some embodiments;

[0045] Figure 39 A flowchart illustrating yet another execution method of a control component for another air conditioning indoor unit according to some embodiments;

[0046] Figure 40 This is a flowchart illustrating yet another execution method of a control component for another air conditioning indoor unit according to some embodiments. Detailed Implementation

[0047] The following description, in conjunction with the accompanying drawings, clearly and completely describes some embodiments of this disclosure. Obviously, the described embodiments are merely some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0048] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0049] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] In the following text, for ease of description, unless otherwise specified, the descriptions of up, down, left, right, front, and rear directions in this disclosure are based on the operating state of the indoor unit of the air conditioner. The side of the indoor unit facing the user during operation is the front side, and the opposite side is the rear side. The height direction of the indoor unit is the up and down direction. The length direction of the indoor unit is the left and right direction, and the thickness direction is the front and rear direction.

[0051] With the widespread use of air conditioners, users' demands for them are constantly increasing. An air conditioner indoor unit includes an air inlet and an air outlet. A filter is installed at the air inlet to filter the air entering the indoor unit, preventing dust and other debris from entering. After the indoor unit has been running for a period of time, excessive dust and debris may accumulate on the filter, potentially clogging it and reducing airflow, thus lowering the air conditioner's cooling or heating efficiency.

[0052] Typically, an indoor air conditioner unit contains a roller brush to remove debris from the filter, maintaining its high filtration capacity and thus ensuring the unit's cooling or heating efficiency. After the unit has been running for a period, a significant amount of debris accumulates on the filter, necessitating the removal of the filter assembly for cleaning of the filter and roller brush. However, during disassembly, the drive motor that moves the filter relative to the roller brush is connected to the filter; therefore, the drive motor must be disconnected before the filter assembly can be removed. This presents a safety hazard of electric shock due to contact with the drive motor. Furthermore, the filter assembly is difficult to install and remove, resulting in low assembly efficiency for the indoor unit and hindering user cleaning of the filter assembly.

[0053] Some embodiments of this disclosure provide an air conditioner indoor unit 1000, such as Figure 1 , Figure 5 and Figure 6 As shown, the indoor unit 1000 of the air conditioner includes a housing 100, a filter assembly 200, a self-cleaning assembly 300, and a drive assembly 400 (see...). Figure 7B ) and transmission assembly 500 (see Figure 11 ).

[0054] The housing 100 includes a front panel 191, a back panel 192, a first side panel 193, and a second side panel 194. The front panel 191 is the side panel furthest from the wall when the indoor unit is installed on an indoor wall. The back panel 192 is the side panel closest to the wall when the indoor unit is installed on an indoor wall. The first side panel 193 and the second side panel 194 connect the front panel 191 and the back panel 192, respectively, and extend in directions perpendicular to the front panel 191 and the back panel 192. For example, the first side panel 193 extends along the length of the housing 100 (i.e., as shown in the image). Figure 1The second side plate 194 is on one side of the housing 100 in the left-right direction (as shown), and the second side plate 194 is in the length direction of the housing 100 (i.e., as shown). Figure 1 The side panel on the other side (shown in the left-right direction). For example, the first side panel 193 is the side panel on the left side of the air conditioner indoor unit 1000, and the second side panel 194 is the side panel on the right side of the air conditioner indoor unit 1000.

[0055] Housing 100 includes an air inlet 110. For example, a portion of the top of housing 100 is open to form the air inlet 110. A filter assembly 200 is disposed within housing 100 and located at the air inlet 110. The filter assembly 200 is configured to filter air entering the indoor unit 1000 from the air inlet 110 to prevent airborne debris from entering the indoor unit 1000. A self-cleaning assembly 300 is disposed within housing 100 and configured to remove debris adhering to the filter assembly 200.

[0056] The drive assembly 400 is disposed on the housing 100, and the transmission assembly 500 is disposed inside the housing 100. The transmission assembly 500 is connected to the self-cleaning assembly 300 and the drive assembly 400 respectively, and is configured to drive the self-cleaning assembly 300 to move under the drive of the drive assembly 400, so that the self-cleaning assembly 300 removes debris attached to the filter assembly 200 to perform self-cleaning work, thereby maintaining the cooling or heating efficiency of the air conditioning indoor unit 1000.

[0057] In some embodiments, such as Figure 2 and Figure 5 As shown, the indoor unit 1000 of the air conditioner also includes an indoor heat exchanger 600, a fan assembly 700, and an air outlet. The indoor heat exchanger 600 is disposed within the housing 100 and configured to exchange heat with indoor air entering from the air inlet 110. The fan assembly 700 is disposed on the side of the indoor heat exchanger 600 away from the air inlet 110 and is configured to draw in and pump out indoor air.

[0058] For example, when the fan assembly 700 is working, the fan rotates, drawing indoor air in through the air inlet 110, allowing the indoor air to exchange heat with the indoor heat exchanger 600, and then pumping the indoor air after heat exchange with the indoor heat exchanger 600 out through the air outlet. The air conditioner indoor unit 1000 heats or cools the indoor air through the indoor heat exchanger 600 to raise or lower the indoor temperature, achieving the effect of heating or cooling.

[0059] In some embodiments, such as Figure 6 , Figure 7A and Figure 7B As shown, the filter assembly 200 includes a filter screen 210. The filter screen 210 is disposed between the air inlet 110 and the indoor heat exchanger 600 (e.g., Figure 5(as shown), and covers the air inlet 110, so that the filter 210 can filter out impurities in the air entering the indoor unit 1000 of the air conditioner from the air inlet 110.

[0060] The self-cleaning assembly 300 includes a base 310, a first cleaning brush 320, a first reel 330, and a second reel 340. The base 310 is disposed within the housing 100 and includes a mounting member 311 and a bracket 312. One side of the bracket 312 is connected to the side of the mounting member 311 near the back panel 192, and extends along the thickness direction of the indoor unit 1000 (e.g., along the thickness direction of the indoor unit 1000). Figure 7A Extending in the front-to-back direction (as shown). A mounting cavity 313 is defined within the mounting member 311, and a portion of the top of the mounting cavity 313 is open. A bracket 312 is configured to carry the filter 210. The filter 210 is disposed on the bracket 312 and is movable relative to the bracket 312.

[0061] A first cleaning brush 320, a first spool 330, and a second spool 340 are rotatably disposed within the mounting cavity 313, and the first cleaning brush 320, the first spool 330, and the second spool 340 extend along the length of the air conditioner indoor unit 1000. The first cleaning brush 320 includes a first brush 321 and is configured to remove debris adhering to the filter screen 210. The first cleaning brush 320 is disposed close to the first spool 330. The first spool 330 and the second spool 340 are spaced apart and are substantially parallel. One end of the filter screen 210 is connected to the first spool 330, and the other end is connected to the second spool 340. The filter screen 210 is wound around the outer periphery of at least one of the first spool 330 and the second spool 340, and the filter screen 210 is tensioned between the first spool 330 and the second spool 340.

[0062] In some embodiments, such as Figure 5 , Figure 10 and Figure 11 As shown, the transmission assembly 500 is disposed in the base 310, and the transmission assembly 500 is connected to the first roller 330 and the second roller 340 respectively. The transmission assembly 500 is connected to the filter screen 210 through the first roller 330 and the second roller 340.

[0063] A drive assembly 400 is disposed on the housing 100, and the drive assembly 400 includes a drive gear 410. The drive gear 410 is connected to a power output end. The power output end of the drive assembly 400 is detachably connected to a transmission assembly 500. For example, the drive assembly 400 is a drive motor. The drive assembly 400 can drive the first roller 330 and the second roller 340 to rotate in opposite directions via the transmission assembly 500, thereby driving the filter screen 210 to move along a predetermined trajectory. That is, relative movement occurs between the first cleaning brush 320 and the filter screen 210, such that different areas of the filter screen 210 are positioned opposite to the first cleaning brush 320.

[0064] For example, the drive assembly 400 drives the first spool 330 and the second spool 340 to rotate via the transmission assembly 500, causing the filter screen 210 to be wound on the first spool 330 and unwound on the second spool 340, or vice versa. This causes the filter screen 210 to be unwound on the first spool 330 and wound on the second spool 340, thereby tensioning the filter screen 210 between the first spool 330 and the second spool 340 and moving relative to the first cleaning brush 320. In this way, the first cleaning brush 320 can clean the area of ​​the filter screen 210 opposite to it.

[0065] The transmission assembly 500 includes a first driven gear 510, a second driven gear 520, a third driven gear 530, and an intermediate gear 540. The first driven gear 510 is mounted on one end of the first reel 330 and meshes with the drive gear 410. The second driven gear 520 is mounted on one end of the second reel 340 and meshes with the first driven gear 510. The third driven gear 530 is mounted on one end of the first cleaning brush 320 and meshes with the intermediate gear 540. The first driven gear 510 also meshes with the intermediate gear 540.

[0066] During the operation of the self-cleaning assembly 300, the drive assembly 400 operates, causing the drive gear 410 on the power output end to rotate in a first direction, thereby driving the first driven gear 510 to rotate in a second direction, and in turn driving the first spool 330 to rotate in the second direction. At the same time, the first driven gear 510 also drives the second driven gear 520 to rotate in the first direction, thereby driving the second spool 340 to rotate in the first direction.

[0067] In this way, under the action of the first roller 330 and the second roller 340, the filter screen 210 tensioned between the first roller 330 and the second roller 340 moves along a predetermined trajectory, so that different areas on the filter screen 210 are sequentially opposite to the first cleaning brush 320, and the first cleaning brush 320 cleans the filter screen 210 in different areas.

[0068] It should be noted that the first direction is opposite to the second direction. When the first spool 330 rotates along the first direction and winds up the filter screen 210, the second spool 340 rotates along the second direction and unwinds the filter screen 210.

[0069] For example, refer to Figure 7A , Figure 7B and Figure 11Driven by the drive gear 410, the first driven gear 510 rotates counterclockwise, causing the first roller 330 to rotate counterclockwise to wind up the filter screen 210. Then, while rotating counterclockwise, the first driven gear 510 drives the second driven gear 520 to rotate clockwise, thereby causing the second roller 340 to rotate clockwise and unwind the filter screen 210.

[0070] Understandably, the first driven gear 510 rotates clockwise under the drive of the drive gear 410, which in turn drives the first spool 330 to rotate clockwise to unwind the filter screen 210. Then, while rotating clockwise, the first driven gear 510 drives the second driven gear 520 to rotate counterclockwise, which in turn drives the second spool 340 to rotate counterclockwise and wind up the filter screen 210.

[0071] In addition, the first driven gear 510 also drives the intermediate gear 540 to rotate in the first direction, thereby the intermediate gear 540 drives the third driven gear 530 to rotate in the second direction, which in turn drives the first cleaning brush 320 to rotate in the second direction, so that the rotation direction of the first cleaning brush 320 is opposite to the direction of movement of the filter screen 210, which helps to improve the cleaning effect of the first cleaning brush 320 on the filter screen 210.

[0072] For example, the first driven gear 510 and the second driven gear 520 have the same number of teeth so that the rotational speeds of the first roller 330 and the second roller 340 are the same, thereby making the filter screen 210 tensioned on the first roller 330 and the second roller 340.

[0073] In some embodiments, such as Figure 10 , Figure 11 and Figure 12 As shown, the base 310 also includes a receiving cavity 314. The mounting member 311 is recessed from one side to the other along the length of the indoor unit 1000 to form the receiving cavity 314. The transmission assembly 500 is disposed within the receiving cavity 314, specifically the first driven gear 510, the second driven gear 520, the third driven gear 530, and the intermediate gear 540 are respectively disposed within the receiving cavity 314. Providing the receiving cavity 314 on the base 310 facilitates the protection and concealment of the first driven gear 510, the second driven gear 520, the intermediate gear 540, and the third driven gear 530, facilitates wiring within the indoor unit 1000, and prevents operating components (e.g., the intermediate gear 540) from damaging other components (e.g., the fan assembly 700).

[0074] In some embodiments, such as Figure 12 As shown, the bottom side of the accommodating cavity 314 is provided with a first opening 3141, a second opening 3142, and a third opening 3143 that communicate with the mounting cavity 313. Figure 14 As shown, the first driven gear 510 has a first prism 511 in the middle, and the end of the first spool 330 has a first hole that matches the first prism 511. The first prism 511 passes through the first opening 3141 and is inserted into the first hole so that the first driven gear 510 is fixedly connected to the first spool 330.

[0075] The second driven gear 520 has a second prism 521 in its middle. The end of the second spool 340 has a second hole that matches the second prism 521. The second prism 521 passes through the second opening 3142 and is inserted into the second hole, so that the second driven gear 520 and the second spool 340 are fixedly connected. The third driven gear 530 has a third prism 531 in its middle. The end of the first cleaning brush 320 has a third hole that matches the third prism 531. The third prism 531 passes through the third opening 3143 and is inserted into the third hole, so that the third driven gear 530 and the first cleaning brush 320 are fixedly connected.

[0076] The air conditioner indoor unit 1000 is provided with a first opening 3141, a first prism 511, a first hole, a second opening 3142, a second prism 521, a second hole, a third opening 3143, a third prism 531, and a third hole. This facilitates the connection between the first driven gear 510 and the first roller 330, the second driven gear 520 and the second roller 340, and the third driven gear 530 and the first cleaning brush 320, thereby improving the stability of rotation.

[0077] In this way, indoor air enters the housing 100 through the air inlet 110 under the action of the fan assembly 700, and flows to the indoor heat exchanger 600 after being filtered by the filter screen 210. Then, the indoor air is blown out from the air outlet after being heated by the indoor heat exchanger 600.

[0078] After the indoor unit 1000 of the air conditioner has been operating for a period of time, impurities in the indoor air will accumulate on the surface of the filter 210 after being filtered by the filter, resulting in a large amount of impurities adhering to the filter 210 and affecting the filtration and air intake effects of the filter 210. When there is a large amount of impurities adhering to the filter 210, the self-cleaning component 300 of the indoor unit 1000 can remove the impurities adhering to the filter 210, so that the filter 210 maintains its filtration capacity, thereby improving the cooling or heating efficiency of the indoor unit 1000.

[0079] In some embodiments, such as Figure 8A and Figure 8BAs shown, the first reel 330 includes a first portion 331 and a second portion 332, and the first portion 331 and the second portion 332 are detachably connected. The second reel 340 includes a third portion 341 and a fourth portion 342, and the third portion 341 and the fourth portion 342 are detachably connected. One end of the filter screen 210 is clamped between the first portion 331 and the second portion 332, and the other end of the filter screen 210 is clamped between the third portion 341 and the fourth portion 342.

[0080] It should be noted that by setting the first roller 330 and the second roller 340 as two detachably connected structures, and by clamping the two ends of the filter screen 210 onto the first roller 330 and the second roller 340 respectively, the stability of the filter screen 210 connected to the first roller 330 and the second roller 340 can be improved, which is conducive to maintaining the tension of the filter screen between the first roller 330 and the second roller 340.

[0081] Part 1 331, Part 2 332, Part 341, and Part 4 342 are respectively along the thickness direction of the indoor unit 1000 of the air conditioner (e.g., ...). Figure 8A and Figure 8B The strip structure extends in the front-to-back direction and has 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 facilitates the winding and unwinding of the filter screen 210 on the first roll 330 and the second roll 340.

[0082] The first part 331 has a first latching part 333 on its inner side, and the second part 332 has a second latching part 334 on its inner side. The first latching part 333 and the second latching part 334 are latched together, making the first part 331 and the second part 332 detachably connected. The third part 341 has a third latching part 343 on its inner side, and the fourth part 342 has a fourth latching part 344 on its inner side. The third latching part 343 and the fourth latching part 344 are latched together, making the third part 341 and the fourth part 342 detachably connected. In this way, the connection between the first part 331 and the second part 332, and the third part 341 and the fourth part 342, is achieved by latching, which facilitates the user in removing the filter 210 for cleaning.

[0083] In some embodiments, reference Figure 2 , Figure 9 , Figure 10 and Figure 15 The indoor unit 1000 of the air conditioner includes multiple filter components 200 and multiple self-cleaning components 300. The housing 100 includes multiple air inlets 110. Each filter component 200 corresponds to one self-cleaning component 300, and each air inlet 110 corresponds to one filter component 200.

[0084] It is understandable that the installation of multiple air inlets 110, multiple filter components 200, and multiple self-cleaning components 300 in the indoor unit 1000 is beneficial to improving the air intake and exhaust volume of the indoor unit 1000, thereby improving the cooling or heating efficiency of the indoor unit 1000.

[0085] The indoor unit 1000 of the air conditioner also includes multiple drive components 400 and multiple transmission components 500, with each drive component 400 corresponding to one transmission component 500. Each drive component 400 is connected to the filter component 200 through its corresponding transmission component 500. In this way, each filter component 200 can be driven individually to perform self-cleaning.

[0086] In some embodiments, such as Figure 13 and Figure 14 As shown, the air conditioner indoor unit 1000 also includes at least one connecting rod 550, and multiple transmission components 500 are connected to each other through the connecting rod 550. The power output end of the drive component 400 is connected to the connecting rod 550. In this way, the drive component 400 can drive multiple self-cleaning components 300 to work through the connecting rod 550 and the multiple transmission components 500, which helps to simplify the structure of the air conditioner indoor unit 1000.

[0087] In some embodiments, such as Figure 12 As shown, the base 310 also includes a notch 315. For example, the side of the accommodating cavity 314 near the back plate 912 is open to form the notch 315. A portion of the first driven gear 510 extends from the notch 315, and the drive gear 410 meshes with said portion of the first driven gear 510.

[0088] It is understood that the detachable connection between the transmission assembly 500 and the drive assembly 400 is achieved through the meshing between the first driven gear 510 and the drive gear 410. A notch 315 is provided on the base 310 to facilitate meshing between the drive gear 410 and the first driven gear 510. When disassembling the transmission assembly 500, the first driven gear 510 can be removed from the housing 100 along with the mounting piece 311, while the drive gear 410 will not be removed from the housing 100 along with the mounting piece 311.

[0089] In other words, since the power output end of the drive assembly 400 and the transmission assembly 500 are detachably connected, and the transmission assembly 500 is connected to the self-cleaning assembly 300, and the filter assembly 200 is connected to the self-cleaning assembly 300, when the user needs to disassemble the filter assembly 200 and the self-cleaning assembly 300 for cleaning, the base 310 can be removed from the housing 100 to remove the self-cleaning assembly 300 from the housing 100. Simultaneously, the transmission assembly 500 is removed from the housing 100 along with the self-cleaning assembly 300, but the drive assembly 400 is not removed from the housing 100 along with the transmission assembly 500.

[0090] In this way, users can disassemble the filter assembly 200 and the self-cleaning assembly 300 without touching the drive assembly 400, and clean them, thus avoiding safety hazards caused by contact with the drive assembly 400. Furthermore, the drive assembly 400 is concealed within the housing 100, which provides protection against damage from external forces.

[0091] In some embodiments, such as Figure 2 As shown, the housing 100 also includes a through hole 120 and a mounting groove 130. For example, a portion of the front side of the housing 100 is open to form the through hole 120. 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 is located above the mounting groove 130. A mounting member 311 is disposed within the mounting groove 130. A self-cleaning assembly 300 is disposed inside the mounting member 311, and a transmission assembly 500 is disposed outside the mounting member 311. A bracket 312 is disposed within the housing 100 through the through hole 120.

[0092] Since the first reel 330, the second reel 340, and the first cleaning brush 320 are housed within the mounting member 311, which is located within the mounting groove 130, and one side of the bracket 312 is connected to the mounting member 311 and extends rearward through the through hole 120, the user can remove the mounting member 311 from the mounting groove 130 through the through hole 120. This allows the bracket 312 and the filter screen 210 to be removed from the housing 100 along with the mounting member 311, thus enabling the removal of the filter assembly 200 and the self-cleaning assembly 300. This reduces the difficulty of removing and installing the filter assembly and the self-cleaning assembly, making it easier for the user to clean the removed filter assembly 200 and the self-cleaning assembly 300.

[0093] Similarly, the user can install the mounting part 311 in the mounting groove 130 through the through hole 120, so that the bracket 312 and the filter screen 210 are installed in the housing 100 together with the mounting part 311, thereby realizing the installation of the filter assembly 200 and the self-cleaning assembly 300.

[0094] In some embodiments, such as Figure 9 As shown, the air conditioner indoor unit 1000 also includes a limiting block 160. The limiting block 160 is rotatably disposed on the front plate 191 of the housing 100 and near the mounting groove 130. The limiting block 160 is configured to rotate between a locked position and an unlocked position.

[0095] For example, when the limit block 160 is in the locked position, at least a portion of the limit block 160 is on the front side of the mounting member 311 to prevent the mounting member 311 from sliding out of the mounting groove 130. When the limit block 160 is in the unlocked position, the limit block 160 is on the front plate 191 of the housing 100 to allow the mounting member 311 to slide forward to disengage from the mounting groove 130.

[0096] It should be noted that when the indoor unit 1000 of the air conditioner is working, the limit block 160 is in the locked position to prevent the mounting part 311 from sliding out of the mounting groove 130. When the filter assembly 200 needs to be cleaned, the limit block 160 can be rotated to the unlocked position to remove the mounting part 311.

[0097] For example, the indoor unit 1000 of the air conditioner includes multiple limiting blocks 160. The multiple limiting blocks 160 on the housing 100 facilitate the user's disassembly and installation of the filter assembly 200.

[0098] In some embodiments, such as Figure 15 As shown, the self-cleaning assembly 300 also includes a dust collection box 350 and a dust collection box 360. The dust collection box 350 is disposed on the base 310 and located below the first cleaning brush 320. The dust collection box 350 is configured to collect debris removed from the filter 210.

[0099] like Figure 3 and Figure 9 As shown, the indoor unit 1000 also includes a slot 150. The slot 150 is disposed on the front panel 191 of the housing 100. A dust collection box 360 is disposed within the slot 150 and is located below the dust collection box 350. The slot 150 has a length direction along the length of the indoor unit 1000 (i.e., as shown in the diagram). Figure 9 A first sidewall 151 and a second sidewall 152 are spaced apart (left and right directions). The first sidewall 151 has a first slot 153, and the second sidewall 152 has a second slot 154. (For example...) Figure 12 As shown, the dust collection box 360 is provided along the length direction of the indoor unit 1000 of the air conditioner (i.e., as shown in the figure). Figure 9 The first and second card blocks are set at intervals in the left and right directions.

[0100] The dust collection box 360 is detachably installed in the slot 150 by the cooperation of the first card block and the first card slot 153, and the cooperation of the second card block and the second card slot 154.

[0101] In some embodiments, such as Figure 15 and Figure 16 As shown, the self-cleaning assembly 300 also includes a second cleaning brush 370. The second cleaning brush 370 is disposed within the dust collection box 350 and configured to brush away debris attached to the first cleaning brush 320 into the dust collection box 350. The second cleaning brush 370 includes a second bristle 371, which is configured to be inserted into the first cleaning brush 320.

[0102] When the self-cleaning component is working, some debris will adhere to the first brush 321. The second brush 371 can brush the debris attached to the first brush 321 into the dust collection box 350, so that the first brush 321 can contact the filter screen 210 and remove the debris attached to the filter screen 210 without any debris attached, which is beneficial to improving the cleaning effect of the filter screen 230.

[0103] In some embodiments, such as Figure 1 and Figure 4 As shown, the air conditioner indoor unit 1000 also includes a panel 800. The panel 800 is detachably attached to the front of the housing 100 to block the through-hole 120. For example, when the air conditioner indoor unit 1000 is operating, the panel 800 covers the front of the housing 100 to maintain a harmonious appearance. When it is necessary to disassemble and clean the filter assembly 200 and the self-cleaning assembly 300, the panel 800 can be removed from the front of the housing 100, and then the filter assembly 200 and the self-cleaning assembly 300 can be removed from the housing 100 through the through-hole 120.

[0104] like Figure 2 As shown, a first mating part is provided on the inner side of the panel 800, and a second mating part 140 is provided on the front side of the housing 100. The first mating part and the second mating part 140 are connected by a snap-fit ​​so that the panel 800 can be detachably connected to the front side of the housing 100.

[0105] In some embodiments, such as Figure 17 As shown, the filter 210 includes a filter section 211 and a sealing section 212 connected in sequence. The filter section 211 is configured to filter the air entering the housing 100 from the air inlet 110, and the sealing section 212 is configured to block the air entering the housing 100 from the air inlet 110.

[0106] For example, when the filter 210 moves along a predetermined trajectory, it can move between a filtering position and a blocking position. When the filter 210 is in the filtering position, the filtering part 211 covers the air inlet 110, filtering the air entering the housing 100 from the air inlet 110. When the filter 210 is in the blocking position, the blocking part 212 covers the air inlet 110 to block the air entering the housing 100 from the air inlet 110.

[0107] It should be noted that when the indoor unit 1000 of the air conditioner is working, the filter 210 is in the filtering position, and the filter part 211 covers the air inlet 110 and filters the air entering from the air inlet 110. When the indoor unit of the air conditioner is stopped, the filter 210 moves from the filtering position to the blocking position, and the blocking part 212 covers the air inlet 110, so that air and dust are blocked by the blocking part 212, preventing dust from entering the interior of the housing 100.

[0108] Understandably, the filter section 211 is a region with multiple small-diameter pores. These pores can filter large particles of dust and other impurities from the air, allowing filtered air to enter the housing 100. The sealing section 212 is a non-porous region, preventing air and dust from passing through. For example, the sealing section 212 is made of a plastic film, and a heat-sealing section is provided between the sealing section 212 and the filter section 211 to connect them.

[0109] In this way, by setting the sealing part 212 in the filter 210, air and dust cannot enter the housing 100 when the air conditioner indoor unit 1000 is stopped, thereby preventing dust and other debris from entering the interior of the housing 100 and preventing dust and other debris from adhering to the indoor heat exchanger 600 or fan assembly 700 inside the housing 100. This makes the interior of the air conditioner indoor unit 1000 cleaner and helps to improve the cooling or heating effect of the air conditioner indoor unit 1000.

[0110] In some embodiments, the air conditioner indoor unit 1000 further includes a sensor and a controller. The sensor is configured to send a signal to the controller representing the operation of a self-cleaning mode. For example, the signal may be an indication that the air conditioner indoor unit 1000 is operating or stopping the self-cleaning mode. When the amount of debris on the filter 210 reaches a preset amount, the sensor sends a signal to the controller representing the operation of the self-cleaning mode. When the amount of debris on the filter 210 falls below a preset amount, the sensor sends a signal to the controller representing the stopping of the self-cleaning mode.

[0111] The controller is configured to receive signals from the sensor and, in response to the signals, control the indoor unit 1000 of the air conditioner to perform the operations indicated by the signals. For example, when a signal from the sensor indicating that the self-cleaning mode is being operated is received, the controller controls the indoor unit 1000 to operate the self-cleaning mode. When a signal from the sensor indicating that the self-cleaning mode is being stopped is received, the controller controls the indoor unit 1000 to stop the self-cleaning mode.

[0112] For example, after the indoor unit 1000 has been operating for a period of time, indoor air continuously flows from the air inlet 110 to the indoor heat exchanger 600 under the action of the 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 amount of debris attached to the filter 210 opposite the air inlet 110 inside the indoor unit 1000 increases. When the amount of debris on the filter 210 reaches the preset amount, the sensor will send a signal to the controller indicating that the self-cleaning mode is being activated.

[0113] The controller receives a signal from the sensor indicating that the self-cleaning mode is in operation, and controls the indoor unit 1000 of the air conditioner to operate in the self-cleaning mode. When the self-cleaning mode is in operation, the drive assembly 400 drives the first roller 330 and the second roller 340 to rotate in opposite directions through the transmission assembly 500, so as to drive the filter 210 to move along a predetermined trajectory. The first cleaning brush 320 can be set relative to different areas of the filter 210 and cleans the areas of the filter 210 that are set relative to itself.

[0114] When the first roller 330 and the second roller 340 rotate in opposite directions, the first cleaning brush 320 abuts against the first roller 330 to remove debris from the filter screen 210 wound on the first roller 330, causing the debris to fall into the dust collection box 350, thus collecting the debris. When there is a lot of debris in the dust collection box 350, the dust collection box 350 can be removed for cleaning.

[0115] Some embodiments of this disclosure provide another air conditioner indoor unit 100A, such as Figure 18 As shown, the indoor unit 100A of the air conditioner 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.

[0116] like Figures 19 to 21 As shown, 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 in directions perpendicular to the front plate 12 and the back plate 13, respectively.

[0117] The housing 10 includes at least one air inlet 11 and an air outlet. A portion of the top of the housing 10 is open to form the air inlet 11.

[0118] A portion of the bottom of the housing 10 is open to form the air outlet. An indoor heat exchanger 20 is disposed within the housing 10 and configured to exchange heat with indoor air entering from the air inlet 11. A fan assembly 30 is disposed on the side of the indoor heat exchanger 20 away from the air inlet 11 and is configured to draw in and pump out indoor air.

[0119] A filter 40 is disposed between the air inlet 11 and the indoor heat exchanger 20, and covers the air inlet 11. The filter 40 is configured to filter the air entering the indoor unit 100A of the air conditioner from the air inlet 11 to prevent impurities in the air from entering the indoor unit 100A of the air conditioner.

[0120] The self-cleaning assembly 50 is disposed within the housing 10 and configured to clean debris adhering to the filter screen 40. A drive assembly 60 is disposed on the housing 10, and a transmission assembly 70 is disposed within the housing 10. The drive assembly 60 is configured to drive the transmission assembly 70 to rotate. The transmission assembly 70 is connected to both the self-cleaning assembly 50 and the drive assembly 60, and is configured to, under the drive of the drive assembly 60, move the self-cleaning assembly 50 to clean debris adhering to the filter screen 40, thereby maintaining the cooling or heating efficiency of the indoor unit 100A of the air conditioner.

[0121] In some embodiments, such as Figure 23 As shown, the self-cleaning assembly 50 includes a base 51, a second reel 53, a first reel 52, a cleaning brush assembly 54, and a dust collection box 55. The base 51 is disposed within the housing 10 and is close to the front panel 12. The base 51 includes a base body 511A and a bracket 512. One side of the bracket 512 is connected to the side of the base body 511A near the back panel 13, and extends along the thickness direction of the housing 10 (i.e., as shown in the figure). Figure 19 Extending in the front-to-back direction (as shown). The bracket 512 is configured to carry the filter 40. The filter 40 is disposed on the bracket 512 and can move along a predetermined trajectory on the bracket 512.

[0122] The second spool 53, the first spool 52, and the cleaning brush assembly 54 are rotatably connected to the base body 511A, and extend along the length of the housing 10. The second spool 53 is spaced apart from the first spool 52 and is approximately parallel. The filter screen 40 is tensioned between the second spool 53 and the first spool 52. The cleaning brush assembly 54 is positioned close to the first spool 52 and is configured to clean debris from the filter screen 40 as it is wound or unwound by the first spool 52 or the second spool 53.

[0123] The self-cleaning assembly 50 also includes a cleaning chamber 56. The base body 511A defines the cleaning chamber 56. The cleaning chamber 56 includes a first opening 563 and a second opening 564. The top of the cleaning chamber 56 is open to form the first opening 563, and the bottom of the cleaning chamber 56 is open to form the second opening 564. A second spool 53 is located above the first opening 563, a first spool 52 is located at the first opening 563, and a cleaning brush assembly 54 is located within the cleaning chamber 56. A dust collection box 55 is disposed below the second opening 564 and configured to receive debris swept off the filter 40 by the cleaning brush assembly 54.

[0124] In some embodiments, the second spool 53 and the first spool 52 rotate in opposite directions. During the cleaning process of the self-cleaning assembly 50, the filter screen 40 is wound up on the first spool 52 and unwound on the second spool 53, or the filter screen 40 is unwound on the first spool 52 and wound up on the second spool 53.

[0125] In some embodiments, such as Figure 21 and Figure 24 As shown, 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 disposed on the cleaning brush base 541 and abuts against a portion of the filter screen 40. The cleaning brush base 541 includes a first mounting portion 5411 and a second mounting portion 5412. The first mounting portion 5411 is disposed on and connected to the second mounting portion 5412. One end of any one of the at least one elastic member 543 abuts against the first mounting portion 5411, and the other end abuts against the second mounting portion 5412.

[0126] For example, the elastic element 543 is a spring. The cleaning brush 542 is disposed 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 spool 52, the first spool 52 applies a force to the cleaning brush 542, that is, applies a force to the first mounting portion 5411, causing the first mounting portion 5411 to compress the elastic element 543.

[0127] Since the second mounting part 5412 is along the height direction of the housing 10 (i.e., as shown in the figure) Figure 19 Since the vertical direction shown is stationary, the elastic element 543 applies a force of the same magnitude but opposite direction to the first mounting portion 5411, causing the cleaning brush 542 to exert force on the first spool 52, thereby allowing the cleaning brush 542 to elastically abut against the first spool 52. The cleaning brush base 541, through the elastic element 543, ensures that the cleaning brush 542 abuts against the first spool 52. This facilitates the cleaning brush 542's contact with the first spool 52 during rotation of either the first spool 52 or the cleaning brush base 541, improving the cleaning brush 542's ability to clean the filter screen 40 wound on the first spool 52. Simultaneously, it avoids excessive wear on the cleaning brush 542 due to rigid contact between the first spool 52 and the cleaning brush 542, extending the service life of the cleaning brush 542.

[0128] Understandably, the cleaning brush 542 abuts against the first roller 52 via the elastic element 543. When the second roller 53 and the first roller 52 rotate in opposite directions, the cleaning brush 542 can abut against the first roller 52 and clean the filter screen 40 that moves to the abutment point, causing the debris brushed off the filter screen 40 to fall into the dust collection box 55 for collection. Since the first roller 52 will vibrate or radially run during rotation, the elasticity of the elastic element 543 helps to improve the stability of the abutment between the cleaning brush 542 and the first roller 52, avoiding hard contact between the first roller 52 and the cleaning brush 542.

[0129] In some embodiments, such as Figure 25 and Figure 26 As shown, the cleaning brush assembly 54 also includes at least one first limiting member (limiting member) 565. At least one first limiting member 565 is disposed on the inner wall of the cleaning chamber 56. The first limiting member 565 is configured to abut against the cleaning brush 542 when the elastic member 543 tends to be compressed or stretched during the rotation of the cleaning brush base 541, so that the elastic member 543 slowly undergoes elastic deformation.

[0130] After the cleaning brush 542 separates from the second reel 53, the cleaning brush 542 rotates away from the cleaning brush base 541. As the cleaning brush base 541 rotates, the side of the cleaning brush 542 closest to the filter screen 40 abuts against the first limiting member 565. The first limiting member 565 is configured to limit the distance the cleaning brush 542 moves relative to the cleaning brush base 541, so as to avoid the cleaning brush 542 from making abnormal noise when it suddenly moves away from the filter screen 40.

[0131] By setting the first limiting member 565, it is beneficial to prolong the movement process of the elastic member 543 from the compressed state to the extended state when the cleaning brush 542 separates from the filter screen 40, delay the deformation process of the elastic member 543 from the compressed state to the extended state, avoid the elastic member 543 from becoming less stable due to rapid and violent movement, increase the reliability of the elastic member 543 installed between the cleaning brush 542 and the cleaning brush base 541, avoid irreversible deformation of the elastic member 543, protect the elastic member 543, extend the service life of the elastic member 543, improve the structural stability of the cleaning brush assembly 54, and avoid abnormal noise during the use of the self-cleaning assembly 50.

[0132] In some embodiments, such as Figure 23 , Figure 25 and Figure 26As shown, the self-cleaning assembly 50 also includes a cleaning member 59. The cleaning member 59 is disposed on the inner wall of the base 51, and is located on the side of the base front cover 513 near the cleaning cavity 56. For example, the cleaning member 59 and the base front cover 513 can be connected by an adhesive or a snap-fit ​​structure. A first limiting member 565 is located on at least one side of the cleaning member 59, near or away from the filter 40.

[0133] The first limiting member 565 is located on at least one side of the cleaning member 59 along the circumferential direction of the center of the cleaning brush base 541. The central axis of the cleaning brush base 541 is the rotation axis of the cleaning member 59. The first limiting member 565 may be disposed between the cleaning member 59 and the second scroll 53. When the cleaning brush 542 separates from the filter screen 40, the cleaning brush 542 first abuts against the first limiting member 565 and then against the cleaning member 59, and turns to the side of the cleaning member 59 away from the second scroll 53 along the height direction of the housing 10.

[0134] By setting a cleaning component 59 on the side wall of the cleaning chamber, the self-cleaning function of the cleaning brush assembly 54 can be easily realized. When the cleaning brush 542 needs to be cleaned, the self-cleaning assembly 50 can be removed, reducing the difficulty of cleaning the cleaning brush 542 and improving the cleaning efficiency of the cleaning brush 542.

[0135] The first limiting member 565 and the cleaning member 59 are arranged adjacent to each other, and the first limiting member 565 and the cleaning member 59 are respectively located on one side of the central axis of the cleaning brush base 541 in the circumferential direction. The cleaning brush assembly 54 can maintain the original motion trajectory. The structure of the cleaning member 59 and the first limiting member 565 is simple, which helps to reduce production difficulty and production cost.

[0136] In some embodiments, such as Figure 30 and Figure 31 As shown, the first limiting member 565 includes at least one of a first limiting portion 5651 and a second limiting portion 5652. The first end 566 of the first limiting portion 5651 is close to the cleaning member 59. The first limiting portion 5651 and the second limiting portion 5652 are respectively located on the same side of the cleaning cavity 56 and along the height direction of the housing 10 (e.g., ...). Figure 31 The first limiting part 5651, the cleaning part 59 and the second limiting part 5652 are arranged in sequence in the vertical direction, with the cleaning part 59 located between the first limiting part 5651 and the second limiting part 5652.

[0137] like Figures 27 to 29As shown, when the cleaning brush 542 moves between the filter screen 40 and the cleaning member 59, from the separation of the cleaning brush 542 from the filter screen 40 to the separation of the cleaning brush 542 from the cleaning member 59, the cleaning brush 542 abuts against the first limiting part 5651; after the cleaning brush 542 separates from the cleaning member 59, along the height direction of the housing 10, the cleaning brush 542 moves towards the side of the cleaning member 59 away from the first limiting part 5651, and the cleaning brush 542 abuts against the second limiting part 5652. This reduces the abnormal noise generated during the movement of the cleaning brush 542. When the cleaning brush 542 rotates from the position abutting against the cleaning member 59 to the position abutting against the first limiting part 5651 or the second limiting part 5652, the deformation process of the elastic member 543 is relatively slow. This avoids the elastic member 543 from rapid compression or expansion, which helps protect the elastic member 543 and reduces the abnormal noise generated during the movement of the cleaning brush 542.

[0138] In some embodiments, such as Figures 27 to 29 As shown, in the direction from the first end 566 of the first limiting portion 5651 to the second end 567 of the first limiting portion 5651, the width of the first limiting portion 5651 in the thickness direction of the air conditioner indoor unit 1000 gradually decreases. The cleaning brush 542 is also configured to move away from the center of the cleaning brush base 541 when rotated from the second position to the first position; the first position is the position where the cleaning brush 542 abuts against the filter 40 at the second scroll 53, and the second position is the position where the cleaning brush 542 abuts against the first limiting portion 5651.

[0139] like Figure 27 and Figure 28 As shown, 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 can be clockwise. The second end 567 of the first limiting part 5651 is close to the second spool 53, and the first end 566 of the first limiting part 5651 is close to the cleaning member 59. 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.

[0140] During the rotation of the cleaning brush 542 from the second position to the first position, as the cleaning brush 542 moves from abutting against the second end 567 to abutting against the second spool 53, the cleaning brush 542 moves in a direction away from the center of the cleaning brush base 541. In this case, the width of the first limiting portion 5651 decreases in the direction from the second end 567 to the first end 566. This delays the deformation process of the elastic member 543 during the rotation of the cleaning brush assembly 54, and allows the cleaning brush 542 to abut against the first limiting portion 5651 during the movement between the cleaning member 59 and the second spool 53, increasing the stability of the cleaning brush 542's movement relative to the cleaning brush base 541 and increasing the service life of the cleaning brush assembly 54.

[0141] In some embodiments, such as Figures 27 to 29 As shown, in the direction from the second end 569 of the second limiting portion 5652 toward the first end 568 of the second limiting portion 5652, the width of the second limiting portion 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 limiting portion 5652 is lower than the cleaning brush assembly 54, which facilitates the rotation of the cleaning brush assembly 54. The cleaning brush 542 is also configured such that when rotated from the third position to the second position, it first moves away from the center of the cleaning brush base 541, and then moves toward the center of the cleaning brush base 541, wherein the third position is the position where the cleaning brush 542 abuts against the second limiting portion 5652.

[0142] like Figure 28 and Figure 29 As shown, 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 away from the center of the base 51, and then moves towards the center of the base 51. The first end 568 of the second limiting part 5652 is close to the cleaning member 59, the second end 569 of the second limiting part 5652 is away from the cleaning member 59, and the distance between the first end 568 of the second 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 limiting part 5652 and the center of the cleaning brush base 541.

[0143] During the rotation of the cleaning brush 542 from the third position to the second position, the cleaning brush 542 first rotates from being stopped at the second end 569 of the second limiting part 5652 to being stopped at the first end 568 of the second limiting part 5652, and the cleaning brush 542 moves away from the cleaning brush base 541. During the rotation of the cleaning brush 542 toward the sweeping member 59, the cleaning brush 542 separates from the second limiting part 5652, and after stopping at the sweeping member 59, the cleaning brush 542 separates from the sweeping member 59. The cleaning brush 542 moves from the position stopped at the first end 566 of the first limiting part 5651 to the position stopped at the second end 567 of the first limiting part 5651. During this movement, the cleaning brush 542 moves toward the center of the cleaning brush base 541. When the cleaning brush 542 abuts against the second end 569 of the second limiting part 5652, the cleaning brush 542 changes its rotation direction under the drive of the cleaning brush base 541, and rotates towards the direction closer to the first limiting part 5651 (e.g., the second direction N). This allows the cleaning brush 542 to rotate between the cleaning member 59 and the filter screen 40, and between the upper and lower sides of the cleaning member 59. This enables the cleaning member 59 to clean the cleaning brush 542, and the second limiting part 5652 to limit the rotation of the cleaning brush 542. Here, the second direction N is opposite to the first direction M; for example, the second direction N is counterclockwise.

[0144] In some embodiments, such as Figures 27 to 29 As shown, the surfaces of the first limiting part 5651 and the second limiting part 5652 facing the cleaning brush 542 can be flat or curved. That is, the surface of the first limiting part 5651 that abuts against the cleaning brush 542, and the surface of the second limiting part 5652 that abuts against the cleaning brush 542, are respectively flat or curved. For example, the surface of the first limiting part 5651 facing the cleaning brush 542 is flat, and the surface of the second limiting part 5652 facing the cleaning brush 542 is curved. When the cleaning brush 542 abuts against the second end 569 of the second limiting part 5652, the second limiting part 5652 can restrict the cleaning brush 542 from continuing to rotate. Therefore, setting one side of the first limiting part 5651 and the second limiting part 5652 to be flat or curved is beneficial to the relative rotation of the cleaning brush 542 and the first limiting member 565, so that the cleaning brush assembly 54 rotates smoothly and the deformation process of the elastic member 543 is more gradual, thereby helping to extend the service life of the cleaning brush assembly 54.

[0145] In some embodiments, such as 27 to Figure 29As shown, along the height direction of the base 51, the first end 566 of the first limiting part 5651 is higher than the cleaning member 59, and the first end 568 of the second limiting part 5652 is lower than the cleaning member 59. In this case, along the height direction of the housing 10, the first limiting part 5651, the cleaning member 59, and the second limiting part 5652 are arranged sequentially from top to bottom. This facilitates the change of the cleaning brush 542 from abutting against the filter screen 40 to abutting against the cleaning member 59, and from abutting against the cleaning member 59 to abutting against the filter screen 40. The first limiting part 5651 and the second limiting part 5652 can slow down the movement of the elastic member 543 driving the cleaning brush 542 toward or away from the center of the cleaning brush base 541, prolonging the deformation process of the elastic member 543, which is conducive to the first limiting part 5651 and the second limiting part 5652 abutting against the cleaning brush 542 respectively, reducing the abnormal noise generated during the movement of the cleaning brush 542.

[0146] In some embodiments, such as Figure 31 As shown, the second limiting portion 5652 includes a first sub-limiting portion 5653 and a second sub-limiting portion 5654. The first sub-limiting portion 5653 is located at one end of the second limiting portion 5652 near the cleaning member 59, and the second sub-limiting portion 5654 is located at the other end of the second limiting portion 5652 away from the cleaning member 59. One end of the first sub-limiting portion 5653 is connected to the inner wall of the cleaning cavity 56, and the second sub-limiting portion 5654 is connected to the other end of the first sub-limiting portion 5653. The distance between the center of the cleaning brush base 541 and the first sub-limiting portion 5653 is greater than the distance between the center of the cleaning brush base 541 and the second sub-limiting portion 5654. Therefore, when the cleaning brush 542 abuts against the first sub-limiting part 5653, the distance between the center of the cleaning brush 542 and the center of the cleaning brush base 541 is greater than the distance between the center of the cleaning brush 542 and the center of the cleaning brush base 541 when the cleaning brush 542 abuts against the second sub-limiting part 5654.

[0147] Therefore, the compression stroke of the elastic member 543 when the cleaning brush 542 stops against the second sub-limiting part 5654 is greater than the compression stroke of the elastic member 543 when the cleaning brush 542 stops against the first sub-limiting part 5653. Therefore, when the cleaning brush 542 rotates from the first sub-limiting part 5653 to the second sub-limiting part 5654, the cleaning brush 542 moves towards the center of the cleaning brush base 541, and the second sub-limiting part 5654 can limit the cleaning brush 542, for example, by stopping the cleaning brush 542, preventing the cleaning brush 542 from continuing to rotate away from the first sub-limiting part 5653.

[0148] In some embodiments, such as Figure 30 and Figure 31As shown, the thickness L of the first limiting member 565 along the length of the housing 10 is any value within a preset range, for example, the preset range is 1mm to 3mm. In this case, L is greater than or equal to 1mm and less than or equal to 3mm (1mm ≤ L ≤ 3mm). For example, the thickness L of the first limiting member 565 along the length of the housing 10 is 1mm, 2mm, or 3mm. If the thickness L of the first limiting member 565 along the length of the housing 10 is greater than 3mm, it will increase the contact area between the first limiting member 565 and the cleaning brush 542. During the rotation of the cleaning brush 542, the friction between the cleaning brush 542 and the first limiting member 565 will be too large, affecting the rotation of the cleaning brush 542 and easily causing irreversible deformation of the bristles of the cleaning brush 542, thus wasting materials and increasing costs.

[0149] If the thickness L of the first limiting member 565 along the length of the base 51 is less than 1mm, then the first limiting member 565 is too thin. During the rotation of the cleaning brush 542, when the cleaning brush 542 comes into contact with the first limiting member 565, the first limiting member 565 is prone to breakage. Moreover, an excessively thin first limiting member 565 will increase production difficulty and costs. Therefore, by setting the thickness L of the first limiting member 565 along the length of the housing 10 to a preset range, the cleaning brush 542 can be limited when it comes into contact with the filter screen 40 and with the cleaning member 59, thus delaying the deformation process of the elastic member 543, reducing costs, and also improving the structural strength of the first limiting member 565 and extending the service life of the component.

[0150] In some embodiments, such as Figure 30 As shown, the cleaning brush assembly 54 includes a plurality of first limiting members 565. The plurality of first limiting members 565 are spaced apart along the length of the housing 10, thus reducing the force on each first limiting member 565. Furthermore, the plurality of first limiting members 565 are located at both ends of the length of the housing 10, which helps to improve the supporting capacity of the first limiting members 565 for the cleaning brush 542 and enhances the overall structural strength of the base 51.

[0151] In some embodiments, such as Figure 20 , Figure 21 and Figure 25 As shown, the dust collection box 55 includes a dust collection box body 551 and a locking hole 553. The locking hole 553 is located at one end of the dust collection box body 551 along the length direction of the housing 10. The housing 10 also includes a positioning member, which is located on a side plate along the length direction of the housing 10. The dust collection box 55 and the housing 10 are engaged by the locking hole 553 and the positioning member to achieve a detachable connection between the dust collection box 55 and the housing 10.

[0152] like Figure 32As shown, the dust collection box 55 also includes a baffle 552. The baffle 552 is disposed on the front side of the dust collection box body 551. One end of the baffle 552 is connected to the dust collection box body 551, and the other end of the baffle 552 is along the height direction of the housing 10 (i.e., as shown in the figure). Figure 19 (As shown in the vertical direction) it extends upwards. The baffle 552 is configured to seal the gap between the front side of the dust collection box 55 and the front surface side of the base 51 when the dust collection box 55 is assembled with the base 51, so as to prevent debris in the dust collection box 55 from overflowing from the gap.

[0153] In some embodiments, such as Figure 24 As shown, the cleaning brush assembly 54 also includes a mounting cavity 544. The second mounting portion 5412 is open on the side facing the cleaning brush 542, and the first mounting portion 5411 is disposed 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. An elastic member 543 is disposed within the mounting cavity 544. Since both ends of the elastic member 543 abut against the connection between the first mounting portion 5411 and the second mounting portion 5412, the first mounting portion 5411 can move toward the second mounting portion 5412 when it is compressed.

[0154] In some embodiments, such as Figure 24 As shown, the cleaning brush assembly 54 also includes at least one positioning post 545. Any one of the at least one positioning post 545 is disposed on either the first mounting portion 5411 or the second mounting portion 5412. An elastic member 543 is sleeved on any one of the positioning posts 545.

[0155] In some embodiments, such as Figure 24 As shown, the cleaning brush base 541 also includes at least one slot 5414 and at least one latch 5415. At least one slot 5414 is provided on at least one of the two side walls of the first mounting portion 5411 along the width direction of the housing 10. At least one latch 5415 is provided on at least one of the two side walls of the second mounting portion 5412 along the width direction of the housing 10. The latch 5415 and the slot 5414 engage to connect the first mounting portion 5411 and the second mounting portion 5412. When the latch 5415 is engaged within the slot 5414, the latch 5415 can move within the slot 5414 along the height direction of the housing 10.

[0156] For example, when at least one first mounting portion 5411 includes a plurality of slots 5414, the plurality of slots 5414 are spaced apart and disposed on the two side walls of the first mounting portion 5411 along the width direction of the housing 10. The length of the slots 5414 along the height direction of the housing 10 is greater than the length of the latches 5415 along the height direction of the housing 10, so that the first mounting portion 5411 can move relative to the second mounting portion 5412 along the height direction of the housing 10.

[0157] Understandably, when the cleaning brush 542 abuts against the first roller 52, the first mounting portion 5411 moves toward the second mounting portion 5412. When the cleaning brush 542 separates from the first roller 52, the first mounting portion 5411 moves away from the second mounting portion 5412. In this way, the first mounting portion 5411 and the second mounting portion 5412 are engaged by a slot 5414 and a latch 5415, which improves the assembly efficiency of the first mounting portion 5411 and the second mounting portion 5412, simplifies the structure of the cleaning brush base 541, and enhances the stability of the assembly of the first mounting portion 5411 and the second mounting portion 5412.

[0158] Furthermore, when the buckle 5415 is engaged in the slot 5414, the buckle 5415 can move relative to the slot 5414, which is conducive to realizing the movement of the first mounting part 5411 relative to the second mounting part 5412, so that the cleaning brush 542 abuts against the first roller 52, thereby improving the efficiency of the cleaning brush 542 in cleaning the filter screen 40.

[0159] In some embodiments, such as Figures 23 to 25 As shown, the first mounting portion 5411 includes a first side portion 5416, a second side portion 5417, and a connecting portion 5413. The two 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 towards 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.

[0160] 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 sleeved on the positioning post 545 provided on the second mounting portion 5412. The first side portion 5416 and the second side portion 5417 are engaged with the second mounting portion 5412 through the cooperation of the slot 5414 and the buckle 5415. When the first mounting portion 5411 and the second mounting portion 5412 are assembled, the first side portion 5416 and the second side portion 5417 are located on the outer side of the two side walls of the second mounting portion 5412 along the thickness direction of the housing 10, so as to limit the second mounting portion 5412 and prevent the elastic member 543 from falling out.

[0161] The cleaning brush base 541 is provided with a first side portion 5416, a second side portion 5417 and a connecting portion 5413 to form a first mounting portion 5411, which gives the first mounting portion 5411 good structural strength, which is conducive to the installation of the first mounting portion 5411 and the cleaning brush 542, making the installation of the cleaning brush 542 more secure and preventing the cleaning brush 542 from falling off the cleaning brush base 541.

[0162] In some embodiments, such as Figure 24 and Figure 25 As shown, the self-cleaning assembly 50 also includes a mounting groove 57. The mounting groove 57 is located on the side of the connecting portion 5413 away from the second mounting portion 5412. The cleaning brush 542 is disposed within the mounting groove 57. The bottom surface of the mounting groove 57 is flush with the surface of the cleaning brush 542 near the first spool 52 and is arc-shaped, so that when the cleaning brush 542 abuts against the first spool 52, it can clean the filter screen 40, and allow debris generated during cleaning to fall from the surface of the cleaning brush 542 into the cleaning chamber 56.

[0163] In some embodiments, such as Figure 21 , Figure 22 and Figure 25 As shown, the self-cleaning assembly 50 is connected to two transmission assemblies 70. The drive assembly 60 is connected to either of the two transmission assemblies 70. The two transmission assemblies 70 are respectively disposed at both ends of the self-cleaning assembly 50 along the length of the housing 10. The drive assembly 60 is disposed at one end of the housing 10 along the length of the housing 10.

[0164] 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 disposed at both ends of the second spool 53, the two second gears 72 are respectively disposed at both ends of the first spool 52, and the two third gears 73 are respectively disposed at both ends of the cleaning brush base 541.

[0165] 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 a first gear 71 and a second gear 72 and is configured to drive either the first gear 71 or the second gear 72 to rotate. The second drive motor 62 is connected to a third gear 73 and is configured to drive the third gear 73 to rotate.

[0166] Taking the connection between the first drive motor 61 and the second gear 72 as an example, when the self-cleaning assembly 50 operates in self-cleaning mode, the first drive motor 61 drives the second gear 72 to rotate in a first direction, thereby driving the first roller 52 to rotate in the first direction. The second gear 72 also drives the first gear 71 to rotate in a second direction, thereby driving the second roller 53 to rotate in the second direction. The second drive motor 62 drives the third gear 73 to rotate, thereby driving the cleaning brush base 541 to rotate.

[0167] It should be noted that the first direction is opposite to the second direction. When the second spool 53 rotates along the second direction and unwinds the filter screen 40, the first spool 52 rotates along the first direction and winds up the filter screen 40.

[0168] In this way, under the action of the second roller 53 and the first roller 52, the filter screen 40, which is tensioned between the second roller 53 and the first roller 52, moves along a predetermined trajectory, so that the cleaning brush 542 moves relative to the filter screen 40, thereby achieving the cleaning brush 542 cleaning the filter screen 40.

[0169] Understandably, both ends of the second spool 53 are connected to the first gear 71, and the second spool 53 is rotatably connected to the base 51 through the first gear 71. Both ends of the first spool 52 are connected to the second gear 72, and the first spool 52 is rotatably connected to the base 51 through the second gear 72. Both ends of the cleaning brush base 541 are connected to the third gear 73, and the cleaning brush base 541 is rotatably connected to the base 51 through the third gear 73.

[0170] Taking one of the self-cleaning devices as an example, the self-cleaning assembly 50 is connected to two transmission assemblies 70, and the two transmission assemblies 70 are respectively disposed at both ends of the self-cleaning assembly 50. The drive assembly 60 is connected to the transmission assembly 70 near the side wall of the housing 10. The drive assembly 60 drives the transmission assembly 70 to rotate, thereby driving the self-cleaning assembly 50 to rotate.

[0171] Since the two self-cleaning components 50 are respectively equipped with transmission components 70 at both ends, it is not necessary to distinguish between left and right when installing the self-cleaning components 50 and the housing 10, which helps to improve the installation efficiency of the self-cleaning components 50.

[0172] In some embodiments, such as Figure 33 As shown, the drive assembly 60 also includes a housing portion 63 and a bent portion 64. The housing portion 63 is connected to the housing 10. The bent portion 64 is disposed on one side of the housing portion 63 along the width direction of the housing 10, and the free end of the bent portion 64 extends toward the base 51 along the length direction of the housing 10. The bent portion 64, the housing portion 63, and the base 51 define a receiving space, within which the first drive motor 61 and the second drive motor 62 are disposed.

[0173] In some embodiments, such as Figure 25 and Figure 33 As shown, the base 51 also includes two end caps 514 and a connecting plate 516. The two end caps 514 are respectively disposed at both ends of the base 51 along the length of the housing 10. The connecting plate 516 connects the two end caps 514 and is located on the side of the two end caps away from the back plate 13. The connecting plate 516 includes a gripping portion 5161, which is disposed on the top of the connecting plate 516. Figure 27 As shown, the grip portion 5161 includes a plurality of grooves that are recessed toward the dust collection box 55 along the height direction of the housing 10. The plurality of grooves are continuously arranged on the connecting plate 516 along the length direction of the housing 10.

[0174] In some embodiments, such as Figure 32 and Figure 33 As shown, the base 51 also includes a base front cover 513. The base front cover 513 is disposed on the front side of the housing 10 and located below the connecting plate 516. The lower end of the base front cover 513 is detachably connected to the base body 511A. The upper end of the base front cover 513 is rotatably connected to the base body 511A.

[0175] The base front cover 513 is configured to open or close the front side of the cleaning chamber 56 to enable cleaning of the cleaning brush 542 within the cleaning chamber 56.

[0176] In some embodiments, such as Figure 32 As shown, the base front cover 513 includes a pivot 5131. The pivot 5131 is disposed at both ends of the base front cover 513 along the length of the housing 10. The base body 511A also includes a pivot hole, which is disposed on the base body 511A. The pivot 5131 engages with the pivot hole to achieve a rotatable connection between the base front cover 513 and the base body 511A. Thus, when the base front cover 513 is opened, the lower side of the base front cover 513 flips upward to open the front side of the cleaning chamber 56.

[0177] In some embodiments, such as Figure 24 and Figure 25 As shown, the cleaning brush assembly 54 also includes at least one second limiting member 546. The at least one second limiting member 546 is disposed at one end of the cleaning brush base 541 along the length direction of the housing 10. For example, the at least one second limiting member 546 may include one second limiting member 546 disposed at one end of the second mounting portion 5412 along the length direction of the housing 10. For example, the at least one second limiting member 546 may include two second limiting members 546, respectively disposed at both ends of the second mounting portion 5412 along the length direction of the housing 10.

[0178] like Figure 34 As shown, the cleaning brush assembly 54 also includes a stop 547. The stop 547 is disposed on the inner wall of the cleaning chamber 56. A second limiting member 546 is configured to abut against the stop 547 to limit the rotation angle of the cleaning brush assembly 54.

[0179] The second limiting member 546 is also configured to rotate to a first position so that the first limiting protrusion 5461 abuts against the stop portion 547, thereby preventing the cleaning brush 542 from contacting the first roller 52, and the second limiting member 546 is configured to rotate to a second position so that the second limiting protrusion 5462 abuts against the stop portion 547, thereby preventing the cleaning brush 542 from abutting against the first roller 52.

[0180] In some embodiments, such as Figure 34 As shown, the stop portion 547 includes a first stop surface 5471 and a second stop surface 5472. When the second limiting member 546 rotates to the first position, the first limiting protrusion 5461 abuts against the first stop surface 5471, and the cleaning brush 542 does not contact the first roller 52. When the second limiting member 546 rotates to the second position, the second limiting protrusion 5462 abuts against the second stop surface 5472, and the cleaning brush 542 abuts against the first roller 52 to brush away debris from the filter screen 40.

[0181] One end of the first stop surface 5471 is connected to one end of the second stop surface 5472, and the first stop surface 5471 is located below the second stop surface 5472. The other end of the first stop surface 5471 extends downward along the thickness direction of the housing 10 toward the back plate 13. The other end of the second stop surface 5472 extends upward along the thickness direction of the housing 10 toward the back plate 13.

[0182] As the cleaning brush base 541 rotates counterclockwise and the second limiting member 546 rotates from the first position to the second position, the first limiting protrusion 5461 changes from abutting against the first stop surface 5471 to separating, and then the second limiting protrusion 5462 abuts against the second stop surface 5472, so that the cleaning brush 542 abuts against the first roller 52 to clean the filter screen 40.

[0183] In this way, the first stop surface 5471 and the second stop surface 5472 are provided in the stop part 547, which is conducive to the contact between the first limiting protrusion 5461 and the second limiting protrusion 5462 and the stop part 547, improves the stability and reliability of the contact between the second limiting member 546 and the stop part 547, and reduces the rotation error of the cleaning brush assembly 54.

[0184] In some embodiments, the cleaning member 59 is disposed on the side wall of the cleaning cavity 56 opposite to the stop portion 547. When the second limiting member 546 rotates back and forth between the first position and the second position, the cleaning member 59 is configured to clean debris on the cleaning brush 542.

[0185] In some embodiments, such as Figure 23 and Figure 33 As shown, the base front cover 513 also includes a clearance section 5132 and an extension section 5133. The clearance section 5132 is located between the two end covers 514 and protrudes in a direction away from the central axis of the cleaning brush 542. A pivot 5131 is connected to the side of the clearance section 5132 away from the cleaning brush 542. The extension section 5133 extends along the height direction of the housing 10. The upper end of the extension section 5133 is connected to the lower end of the clearance section 5132, and the lower end of the extension section 5133 engages with the dust collection box 55.

[0186] In some embodiments, such as Figure 23 As shown, the base 51 also includes a base rear cover 515. The base rear cover 515 is disposed between the two end covers 514, and is positioned along the thickness direction of the housing 10 on the rear side of the cleaning chamber 56. The base rear cover 515 is opposite to the base front cover 513, and is rotatably connected to the base body 511A. The base rear cover 515 includes a connecting groove, which is disposed on the base rear cover 515. The side of the connecting groove facing the cleaning brush assembly 54 is open. A sealing element is provided within the connecting groove.

[0187] When the base rear cover 515 is closed to close the rear side of the cleaning chamber 56, the seal is configured to seal the gap between the base rear cover 515 and the first reel 52. When the base rear cover 515 is opened to open the rear side of the cleaning chamber 56, the seal and the first reel 52 are spaced apart from each other.

[0188] The rear side of the seal is located within the connecting groove, and the front side of the seal extends out of the connecting groove and abuts against the first roll 52. For example, the seal is a sponge.

[0189] Thus, by providing the connecting groove on the base rear cover 515 and the sealing element in the connecting groove, the first opening 563 of the cleaning chamber 56 can be abutted against the first roller 52 through the sealing element to form a seal on the first opening 563. This helps to prevent dust in the cleaning chamber 56 from flowing to the fan assembly 30 or the indoor heat exchanger 20, thereby extending the service life of the indoor unit 100A of the air conditioner.

[0190] In some embodiments, such as Figure 23As shown, the width of the second opening 564 is 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 chamber 56. The opening of the second opening 564 is larger at the end near the cleaning chamber 56 and smaller at the end near the dust collection box 55.

[0191] In some embodiments, such as Figure 23 As shown, the cleaning chamber 56 further includes a first extension 561 and a second extension 562. The first extension 561 and the second extension 562 are disposed in the lower part of the cleaning chamber 56. The first extension 561 is connected to the front wall of the cleaning chamber 56, and the second extension 562 is connected to the rear wall of the cleaning chamber 56, defining a second opening 564 between the first extension 561 and the second extension 562. The distance between the first extension 561 and the second extension 562 decreases from top to bottom along the height direction of the housing 10.

[0192] The other ends of the first extension section 561 and the second extension section 562 are flush with the bottom of the cleaning chamber 56 to avoid interference between the first extension section 561 and the second extension section 562 and the installation of the dust collection box 55.

[0193] Along the height direction of the housing 10 from top to bottom, the distance between the first extension section 561 and the second extension section 562 decreases, which helps the debris brushed off by the cleaning brush 542 to fall into the dust collection box 55, reducing the possibility of debris accumulating inside the cleaning chamber 56 or at the second opening 564, and reducing the risk of debris falling into areas outside the dust collection box 55. Furthermore, the first extension section 561 and the second extension section 562 are located entirely below the cleaning brush 542, which helps guide the debris swept off the filter 40 into the dust collection box 55, preventing debris from accumulating inside the cleaning chamber 56.

[0194] In some embodiments, such as Figure 23 and Figure 25 As shown, the self-cleaning assembly 50 also includes a connector 58. The connector 58 is disposed on the connecting plate 516 and can move relative to the connecting plate 516 along the length direction of the housing 10.

[0195] The insertion part 58 is provided in the self-cleaning assembly 50, which facilitates the installation and removal of the self-cleaning assembly 50 and improves the efficiency of installation and removal of the self-cleaning assembly 50.

[0196] In some embodiments, such as Figure 35 As shown, 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 indoor fan 31 to rotate.

[0197] In some embodiments, such as Figure 35 As shown, the indoor unit 100A of the air conditioner also includes a fresh air assembly 90. The fresh air assembly 90 includes a fresh air fan 91 and a fresh air volute 92. The fresh air volute 92 is disposed within the housing 10. The fresh air volute 92 includes a fresh air inlet 921 and a fresh air outlet 922. The fresh air inlet 921 is located at one end of the fresh air volute 92, and the fresh air outlet 922 is located at the other end of the fresh air volute. The fresh air fan 91 is disposed within the fresh air volute 92 and is configured to draw in and pump out outdoor air.

[0198] In some embodiments, such as Figure 35 As shown, the indoor heat exchanger 20 includes a heat exchange air duct 21. The heat exchange air duct 21 is disposed inside the indoor heat exchanger 20 and communicates with the air outlet.

[0199] In some embodiments, such as Figure 36 As shown, the indoor unit 100A of the air conditioner also includes an indoor fan motor drive assembly 81, a control assembly 82, a storage 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 to collect the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn. The storage assembly 83 is configured to store a target current value Im. The target current value Im is the current value corresponding to the indoor fan motor 32 operating at the current operating speed Rn when the filter 40 is free of debris.

[0200] Timer 84 is configured to keep time. Control component 82 is connected to indoor fan motor drive component 81, self-cleaning component 50, storage component 83 and timer 84 respectively to control indoor fan motor drive component 81, self-cleaning component 50 and timer 84.

[0201] In some embodiments, such as Figure 37 As shown, control component 82 is configured to execute steps S101 to S105.

[0202] In step S101, a signal representing the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn, collected by the indoor fan motor drive component 81, is received.

[0203] In step S102, it is determined whether the current current value In is less than the difference between the target current value Im and the preset current value I0 when the indoor fan motor 32 is working at the current operating speed Rn and the filter 40 is free of debris. If yes, step S103 is executed; otherwise, step S101 is returned to be executed again.

[0204] In some embodiments, when the control component 82 receives a signal representing the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn, collected by the indoor fan motor drive component 81, the control component 82 determines the relationship between the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn and the target current value Im of the indoor fan motor 32 when the filter 40 is free of debris and it is operating at the current operating speed Rn.

[0205] If the current value In of the indoor fan motor 32 when it is operating at the current working speed Rn is less than the difference between the target current value Im and the preset current value I0 when the filter screen 40 is free of debris and it is operating at the current working speed Rn, it indicates that there is a lot of debris attached to the filter screen 40 and the filter screen 40 needs to be cleaned.

[0206] If the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn is greater than or equal to the target current value Im of the indoor fan motor 32 when there are no debris on the filter screen 40 and it is operating at the current operating speed Rn, it indicates that there are no debris attached to the filter screen 40.

[0207] It should be noted that the preset current value I0 is a value preset in the control component 82. The preset current value I0 is any value from 1mA to 3mA, for example, 1mA, 2mA, or 3mA. The preset current value I0 can be adjusted according to actual needs, and this disclosure does not limit it.

[0208] In step S103, timer 84 is controlled to keep time to obtain duration Tn, and it is determined whether duration Tn is greater than or equal to preset time threshold T0. If yes, step S104 is executed; otherwise, step S105 is executed.

[0209] In some embodiments, when the control component 82 determines that the current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn is less than the difference between the target current value I0 and the preset current value I0 when the filter 40 is free of debris and the indoor fan motor 32 is operating at the current operating speed Rn, the control component 82 controls the timer 84 to keep time to obtain the duration Tn and determine the relationship between the duration Tn and the preset time threshold T0.

[0210] If the current value In of the indoor fan motor 32 operating at its current speed Rn is less than the difference between the target current value Im and the preset current value I0 when the filter 40 is free of debris and operating at the current speed Rn, and if the duration Tn of this state is greater than or equal to the preset time threshold T0, it indicates that the indoor fan motor 32 has been operating in a state where the current value In is lower than the difference between the target current value Im and the preset current value I0 for a relatively long time. In other words, the indoor unit 100A of the air conditioner has been operating for a relatively long time with a large amount of debris attached to the filter 40. Therefore, the filter 40 needs to be cleaned to ensure the cooling or heating effect of the indoor unit 100A of the air conditioner.

[0211] It should be noted that the preset time threshold T0 is a value preset in the control component 82. The preset time threshold T0 can be adjusted according to actual needs, and this disclosure does not limit it. For example, the preset time threshold T0 includes a first preset time threshold T1, a second preset time threshold T2, and a third preset time threshold T3. The first preset time threshold T1 is greater than the second preset time threshold T2, and the second preset time threshold T2 is greater than the third preset time threshold T3. For example, the first preset time threshold T1 is 15 minutes, the second preset time threshold T2 is 10 minutes, and the third preset time threshold T3 is 5 minutes.

[0212] In step S104, the duration Tn is reset to zero, and the self-cleaning component 50 is controlled to clean the filter 40.

[0213] In step S105, the duration Tn is cleared to zero, and step S102 is re-executed.

[0214] In some embodiments, when the control component 82 determines that the current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn is less than the difference between the target current value Im and the preset current value I0 when the filter 40 is free of debris and it is operating at the current operating speed Rn, and the duration Tn is greater than or equal to the preset time threshold T0, the control component 82 determines that the filter 40 needs to be cleaned, and resets the duration Tn to zero, and controls the self-cleaning component 50 to clean the filter 40.

[0215] When the control component 82 determines that the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn is less than the difference between the target current value Im and the preset current value I0 when the filter 40 is free of debris and the indoor fan motor 32 is operating at the current operating speed Rn, and the duration Tn is less than the preset time threshold T0, the control component 82 clears the duration Tn to zero, controls the indoor unit 100A of the air conditioner to continue running, and then re-determines the relationship between the current current value In of the indoor fan motor 32 when it is operating at the current operating speed Rn and the target current value Im when the filter 40 is free of debris and the indoor fan motor 32 is operating at the current operating speed Rn.

[0216] In some embodiments, the indoor unit 100A of the air conditioner also includes a cleaning indicator light. The cleaning indicator light is disposed on the housing 10 and configured to prompt the user whether to clean the filter 40.

[0217] In some embodiments, such as Figure 38 As shown, before step S104, control component 82 is also configured to execute steps S201 to S203.

[0218] In step S201, the local current time Ti is obtained, and it is determined whether the local current time Ti is within the preset time range Ty. If yes, step S202 is executed; otherwise, step S203 is executed.

[0219] In step S202, the cleaning indicator light is turned on.

[0220] In step S203, the cleaning indicator light is turned off.

[0221] In some embodiments, when the current current value In of the indoor fan motor 32 operating at its current operating speed Rn is less than the difference between the target current value Im of the indoor fan motor 32 operating at its current operating speed Rn (when the filter 40 is free of debris) and the preset current value I0, and the duration threshold Tn is greater than the preset time threshold T0, the control component 82 obtains the current time Ti of the location of the indoor unit 100A of the air conditioner and determines the relationship between the local current time Ti and the preset time range Ty. If the local current time Ti is within the preset time range Ty, the cleaning indicator light is turned on to prompt the user to clean the filter 40. If the local current time Ti is outside the preset time range Ty, the cleaning indicator light is turned off.

[0222] It should be noted that the preset time range Ty is a value preset in control component 82. The preset time range Ty can be adjusted according to actual needs, and this disclosure does not limit it. For example, the preset time range Ty is 06:00 to 20:00.

[0223] When the control component 82 determines that the filter 40 needs cleaning, it can obtain the current time Ti of the location of the indoor unit 100A via wireless communication technology. When the location of the indoor unit 100A is Beijing, and the current time Ti is during daytime (06:00–20:00), the control component 82 controls the cleaning indicator light to illuminate, reminding the user that the filter 40 needs cleaning. At this time, the user can manually select whether to activate the self-cleaning function of the indoor unit 100A.

[0224] When the location of the indoor unit 100A of the air conditioner is Beijing, and the current time Ti is nighttime, i.e., 20:00 to 06:00, the control component 82 controls the cleaning indicator light to turn off and controls the indoor unit 100A of the air conditioner to continue running.

[0225] In some embodiments, when the indoor unit 100A of the air conditioner is used as an air conditioner, the air conditioner includes a compressor. The indoor unit 100A of the air conditioner also includes an air guide vane disposed at the air outlet to open and close the air outlet. For example, when the indoor unit 100A of the air conditioner is running, the air guide vane opens to expose the air outlet, allowing air that has undergone heat exchange with the indoor heat exchanger 20 to flow into the room from the air outlet.

[0226] The air guide plate is rotatable relative to the housing 10 to adjust the direction of the air flowing out from the air outlet, so that air can flow in multiple locations in the room.

[0227] In some embodiments, such as Figure 39 As shown, before step S104, control component 82 is also configured to execute step S301.

[0228] In step S301, the compressor is controlled to stop working, the fan assembly 30 is controlled to stop running, and the air guide plate is controlled to close.

[0229] For example, before the control component 82 controls the self-cleaning component 50 to clean the filter screen 40, the control component 82 controls the compressor to stop working, controls the fan component 30 to stop running, and controls the air guide plate to close.

[0230] In some embodiments, the control component 82 is further configured to control the rotation of the first drive motor 61 and the second drive motor 62 to control the self-cleaning component 50 to clean the filter screen 40. For example, the control component 82 controls the second drive motor 62 to rotate, thereby driving the cleaning brush 542 to rotate and clean debris from the filter screen 40. The control component 82 controls the first drive motor 61 to rotate along the first direction, thereby driving the second roller 53 to rotate along the first direction, so that the filter screen 40 is wound up on the second roller 53.

[0231] Furthermore, when the self-cleaning assembly 50 cleans the filter 40, the control assembly 82 eliminates the need for manual operation by the user to change the rotation direction of the first drive motor 61, which facilitates the automation of the self-cleaning assembly 50.

[0232] In some embodiments, such as Figure 40 As shown, when the control component 82 controls the self-cleaning component 50 to clean the filter 40, the control component 82 is also configured to execute steps S401 to 408. That is, step S104 includes steps S401 to S409.

[0233] In step S401, the second drive motor 62 is controlled to rotate, and the first pulse number N1 of the second drive motor 62 is counted.

[0234] In some embodiments, during the process of the control component 82 controlling the second drive motor 62 to rotate, the first pulse count N1 of the second drive motor 62 is counted. That is, the control component 82 controls the second drive motor 62 to start rotating to clean the debris on the filter screen 40, and calculates the first pulse count N1 of the second drive motor 62 to determine the number of times the cleaning brush 542 cleans the filter screen 40.

[0235] In step S402, it is determined whether the first pulse number N1 is greater than or equal to the first preset pulse number N10. If yes, step S403 is executed; otherwise, step S401 is returned to be executed.

[0236] In step S403, the first drive motor 61 is controlled to rotate along the first direction, and the second pulse number N21 of the first drive motor 61 rotating along the first direction is counted.

[0237] In some embodiments, the control component 82 counts the first pulse number N1 and determines the relationship between the first pulse number N1 and the first preset pulse number N10. When the first pulse number N1 is greater than or equal to the first preset pulse number N10, the control component 82 controls the first drive motor 61 to rotate along the first direction and counts the second pulse number N21 of the first drive motor 61 rotating along the first direction.

[0238] It should be noted that the first preset pulse number N10 is a value preset in the control component 82, and the first preset pulse number N10 can be adjusted according to actual needs, which is not limited in this disclosure. For example, the first preset pulse number N10 is any value from 8 to 12, such as the first preset pulse number N10 being 8, 10 or 12.

[0239] In step S404, it is determined whether the second pulse number N21 is greater than or equal to the second preset pulse number N20. If yes, step S405 is executed; otherwise, step S403 is returned to be executed again.

[0240] In step S405, the first drive motor 61 is controlled to rotate along the second direction, and the third pulse number N31 of the first drive motor 61 rotating along the second direction is counted.

[0241] In step S406, it is determined whether the third pulse number N31 is greater than or equal to the second preset pulse number N20. If yes, step S407 is executed; otherwise, step S405 is executed again.

[0242] It should be noted that the second preset pulse number N20 is a value preset in the control component 82, and the second preset pulse number N20 can be adjusted according to actual needs, which is not limited in this disclosure. For example, the second preset pulse number N20 is any value from 1100 to 1300, such as 1100, 1200 or 1300.

[0243] In some embodiments, when the self-cleaning assembly 50 cleans the filter 40, the control assembly 82 controls the second drive motor 62 to rotate at 200 pulses per second, and the control assembly 82 controls the first drive motor 61 to rotate at 110 pulses per second. That is, the number of pulses controlling the second drive motor 62 to rotate is greater than the number of pulses controlling the first drive motor 61 to rotate, meaning the rotation speed of the cleaning brush 542 is greater than the rotation speed of the second roller 53.

[0244] In step S407, the first pulse number N1, the second pulse number N21 and the third pulse number N31 are cleared to zero, and the number of reciprocating motions Nt of the filter 40 along the predetermined trajectory is calculated.

[0245] In step S408, it is determined whether the number of reciprocating strokes Nt is greater than or equal to the preset number of strokes Ns. If yes, step S409 is executed; otherwise, step S401 is returned to be executed again.

[0246] In step S409, the self-cleaning component 50 is controlled to stop cleaning the filter 40.

[0247] In some embodiments, when the third pulse number N22 is greater than or equal to the second preset pulse number N20, the first pulse number N1, the second pulse number N21, and the third pulse number N22 are reset to zero. The control component 82 controls the second drive motor 62 to rotate, controls the first drive motor 61 to repeatedly rotate along the first direction and along the second direction, and calculates the number of reciprocating strokes Nt of the filter screen 40 on the second reel 53 for winding and unwinding.

[0248] When the filter screen 40 reciprocates for a preset number of times Ns, the filter screen 40 becomes relatively clean after being repeatedly cleaned by the cleaning brush 542. In other words, when the number of reciprocations Nt is greater than or equal to the preset number of times Ns, it indicates that the self-cleaning component 50 has completed cleaning the filter screen 40.

[0249] It should be noted that the preset number of times Ns is a value preset in the control component 82, and the preset number of times Ns can be adjusted according to actual needs, which is not limited in this disclosure. For example, the preset number of times Ns can be any value from 8 to 12, such as 8, 10 or 12.

[0250] Those skilled in the art will understand that the scope of this invention is not limited to the specific embodiments described above, and that modifications and substitutions can be made to certain elements of the embodiments without departing from the spirit of this application. The scope of this application is limited by the appended claims.

Claims

1. An indoor unit for an air conditioner, comprising: The housing includes an air inlet and an air outlet; A filter screen covers the air inlet and is configured to filter out impurities in the indoor air; as well as A self-cleaning assembly is configured to remove debris from the filter screen; the self-cleaning assembly includes: The base is connected to the housing; The first reel is rotatably connected to the base and is connected to one end of the filter screen; The second spool is rotatably connected to the base and connected to the other end of the filter screen; A cleaning brush assembly, disposed within the base and located on the side of the second reel away from the filter screen, the cleaning brush assembly comprising: A cleaning brush base, rotatably connected to the base; A cleaning brush, movably disposed on a cleaning brush base and abutting against a portion of the filter screen, is configured to: clean debris from the filter screen as it is wound or unwound by the first or second reel; and An elastic element is disposed between the cleaning brush base and the cleaning brush; A cleaning component, disposed on the inner wall of the base and located on one side of the cleaning brush assembly, is configured to: clean debris from the cleaning brush during rotation of the cleaning brush base; and At least one limiting member is disposed on the inner wall of the base. The limiting member includes a first limiting part and a second limiting part. The first limiting part is located on the side of the cleaning member closer to the filter screen, and the second limiting part is located on the side of the cleaning member away from the filter screen. The limiting member is configured to abut against the cleaning brush when the elastic member tends to be compressed or stretched during the rotation of the cleaning brush base, so that the elastic member slowly undergoes elastic deformation.

2. The indoor unit of the air conditioner according to claim 1, wherein, The base defines a cleaning chamber, the cleaning chamber comprising: The first opening is formed by opening the cleaning chamber on the side near the filter screen; and The second opening is formed by opening the side of the cleaning chamber away from the filter screen; The self-cleaning assembly also includes a dust collection box located at the second opening and configured to collect debris from the cleaning chamber.

3. The indoor unit of the air conditioner according to claim 2, wherein, The first end of the first limiting part is close to the cleaning member, and the second end of the first limiting part extends toward the first opening; The first end of the second limiting portion is close to the cleaning member, and the second end of the second limiting portion extends toward the second opening.

4. The indoor unit of the air conditioner according to claim 3, wherein, In the direction from the first end of the first limiting portion to the second end of the first limiting portion, the width of the first limiting portion in the thickness direction of the air conditioner indoor unit decreases. The cleaning brush is also configured to move away from the center of the cleaning brush base when rotated from the second position to the first position; the first position is the position where the cleaning brush abuts against the filter screen at the second roller, and the second position is the position where the cleaning brush abuts against the first limiting part.

5. The indoor unit of the air conditioner according to claim 3 or 4, wherein, In the direction from the second end of the second limiting portion toward the first end of the second limiting portion, the width of the second limiting portion in the thickness direction of the air conditioner indoor unit decreases. The cleaning brush is also configured such that when it rotates from the third position to the second position, it first moves away from the center of the cleaning brush base, and then moves towards the center of the cleaning brush base; the second position is the position where the cleaning brush abuts against the first limiting part, and the third position is the position where the cleaning brush abuts against the second limiting part.

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

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

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

9. The air conditioning indoor unit according to any one of claims 1 to 4, wherein, The thickness of the limiting member in the length direction of the base is any value within a preset range.

10. The indoor unit of an air conditioner according to any one of claims 1 to 4, wherein, The at least one limiting member includes a plurality of limiting members, which are spaced apart along the length direction of the base and are respectively located at both ends of the base in the length direction.

11. The indoor unit of the air conditioner according to any one of claims 1 to 4, wherein, The cleaning brush base includes: First Installation Department; and The second mounting part is provided on the first mounting part; The first end of the elastic element abuts against the first mounting portion, and the second end of the elastic element abuts against the second mounting portion; the cleaning brush is applied to the side of the first mounting portion away from the second mounting portion.

12. The indoor unit of the air conditioner according to claim 11, wherein, The cleaning brush assembly further includes a mounting cavity, the second mounting portion being open on one side facing the cleaning brush, the first mounting portion being disposed on the open side of the second mounting portion, the first mounting portion and the second mounting portion together defining the mounting cavity, and the elastic member being disposed within the mounting cavity.

13. The indoor unit of the air conditioner according to claim 12, wherein, The cleaning brush base also includes: At least one card slot; and At least one latch, corresponding to the at least one slot, is disposed on at least one of the two side walls of the second mounting portion along the width direction of the housing; The at least one buckle and the at least one slot engage with each other to allow the first mounting part and the second mounting part to be movably connected in the height direction of the housing.

14. The indoor unit of the air conditioner according to claim 13, wherein, The at least one slot includes multiple slots, and the at least one buckle includes multiple buckles. The multiple buckles correspond to the multiple slots respectively and are disposed on the two side walls of the second mounting part along the width direction of the housing. The plurality of buckles engage with the plurality of slots respectively, so that the first mounting part and the second mounting part are movably connected in the height direction of the housing.

15. The indoor unit of the air conditioner according to claim 11, wherein, The elastic element includes a spring; the cleaning brush assembly further includes a positioning post, which is disposed on one of the first mounting portion and the second mounting portion, and the spring is sleeved on the positioning post.

16. The indoor unit of the air conditioner according to any one of claims 1 to 4, further comprising: An indoor heat exchanger is disposed within the housing and configured to exchange heat with indoor air entering from the air inlet; A fan assembly is disposed on the side of the indoor heat exchanger away from the air inlet and is configured to allow indoor air to flow in from the air inlet, exchange heat with the indoor heat exchanger, and then be discharged from the air outlet. The drive assembly is mounted on the housing; as well as At least one transmission component is disposed within the housing, the transmission component being configured to drive the self-cleaning component to move under the drive of the drive component, so that the self-cleaning component cleans debris adhering to the filter screen.

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

18. The indoor unit of the air conditioner according to claim 17, wherein, The at least one transmission component includes two transmission components; the two transmission components are respectively disposed at both ends of the self-cleaning component along the length direction of the housing.

19. The indoor unit of the air conditioner according to claim 16, wherein, The fan assembly includes an indoor fan and an indoor fan motor; The indoor unit of the air conditioner also includes: An indoor fan motor drive assembly is configured to control the start and stop of the indoor fan motor and to collect the current current value of the indoor fan motor when it is operating at the current operating speed. A parameter storage component is configured to store the target current value of the indoor fan motor when the filter is free of debris and the motor is operating at the current operating speed. The timer is configured to time; and The control component is configured as follows: Receive a signal representing the current current value of the indoor fan motor acquired by the indoor fan motor drive assembly; When it is determined that the current current value is less than the difference between the target current value and the preset current value, the timer is controlled to start counting; and When it is determined that the timing time of the timer is greater than or equal to a preset time threshold, the timing time of the timer is reset to zero, and the self-cleaning component is controlled to clean the filter.

20. The indoor unit of the air conditioner according to claim 19, wherein, The drive assembly includes a first drive motor and a second drive motor; the control assembly is further configured to: When the control component controls the self-cleaning component to clean the filter screen... Control the rotation of the second drive motor and count the first pulse count of the second drive motor; When it is determined that the first pulse count is greater than or equal to the first preset pulse count, the first drive motor is controlled to rotate in the first direction, and the second pulse count of the first drive motor rotating in the first direction is counted. When it is determined that the second pulse count is greater than or equal to the second preset pulse count, the first drive motor is controlled to rotate in the second direction, and the third pulse count of the first drive motor rotating in the second direction is counted, wherein the first direction is opposite to the second direction; When it is determined that the third pulse count is greater than or equal to the second preset pulse count, the first pulse count, the second pulse count, and the third pulse count are cleared to zero, and the number of reciprocations of the filter along the predetermined trajectory is calculated; as well as When it is determined that the number of reciprocating cycles is greater than or equal to the preset number, the self-cleaning component is controlled to stop cleaning the filter.

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