CN219913365U - Indoor unit of air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner indoor unit, which comprises: the device comprises a shell, an indoor heat exchanger, a fan assembly, at least one filter screen and at least one self-cleaning mechanism. The self-cleaning mechanism comprises a base, a first scroll, a second scroll, a cleaning brush assembly and a dust collecting box, wherein the cleaning brush assembly is used for brushing sundries on a filter screen, and the dust collecting box is used for collecting sundries falling off the cleaning brush. The cleaning brush assembly comprises a cleaning brush scroll and a cleaning brush, at least one limiting piece is arranged on the cleaning brush scroll, a stop piece is arranged on the inner wall of the cleaning cavity, and the limiting piece is suitable for being abutted against the stop piece to limit the rotation angle of the cleaning brush. Therefore, the cleaning brush can be abutted against the filter screen to effectively clean the filter screen when the cleaning brush assembly is convenient to rotate, the cleaning brush scroll can return to the initial position when the filter screen is not cleaned, the rotating error of the cleaning brush assembly is reduced, the influence of inertia generated during rotation on the rotating precision is avoided, and the reliability of the self-cleaning mechanism is improved.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to the technical field of indoor units of air conditioners, in particular to an indoor unit of an air conditioner.

Background

The indoor unit of the air conditioner is provided with an air inlet and an air outlet, wherein a filter screen is arranged at the air inlet so as to filter the air entering the shell and prevent impurities such as dust and the like from entering the indoor unit of the air conditioner; after the air conditioner is used for a period of time, too much sundries are attached to the filter screen, so that part of filter holes on the filter screen are blocked, the air inlet quantity is reduced, and the refrigerating or heating efficiency of the air conditioner is influenced. At present, in order to enable the indoor unit of the air conditioner to keep high-efficiency operation, a cleaning brush assembly is arranged in the indoor unit of the air conditioner and used for brushing sundries on a filter screen, but the cleaning brush assembly can cause errors in rotating positions due to inertia when rotating, so that the cleaning effect of the cleaning brush assembly on the filter screen is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide an indoor unit of an air conditioner, which can facilitate the limitation of the cleaning brush assembly and improve the rotation stability of the cleaning brush assembly.

According to an embodiment of the utility model, an indoor unit of an air conditioner comprises: the air conditioner comprises a shell, an indoor heat exchanger, a fan assembly, at least one filter screen and at least one self-cleaning mechanism, wherein an air inlet and an air outlet are formed in the shell, the indoor heat exchanger is arranged in the shell and used for exchanging heat with indoor air entering from the air inlet, and the fan assembly is arranged on one side, far away from the air inlet, of the indoor heat exchanger and used for enabling indoor air to flow in from the air inlet and be sent out from the air outlet after exchanging heat with the indoor heat exchanger; the filter screen is established between the air intake with indoor heat exchanger for debris in the filtration room air, self-cleaning mechanism is used for cleaing away debris on the filter screen, self-cleaning mechanism includes base, first spool, second spool, cleaning brush subassembly and dust collection box, inject the top in the base and have first open-ended and the bottom has the second open-ended and clean the chamber, the cleaning brush subassembly includes cleaning brush spool and cleaning brush, the cleaning brush is established on the cleaning brush spool, first spool, second spool with cleaning brush spool with the base is pivotably connected respectively, first spool is located first open-ended department, the one end of filter screen with first spool is connected, the other end of filter screen with second spool is connected, the cleaning brush is located clean the intracavity, be used for the filter screen is in the first spool of winding or follow the in-process that releases on the first spool brushes away debris on the filter screen, the dust collection box is established in second open-ended department is used for collecting on the cleaning brush spool is equipped with at least one stop piece is suitable for limiting the clearance piece is passed through with in the setting up stop piece in order to inject the clearance piece.

According to the indoor unit of the air conditioner, the limiting piece is arranged on the cleaning brush assembly, the stop piece is arranged on the inner wall of the cleaning cavity, the rotation angle of the cleaning brush assembly is limited by the stop of the stop piece and the limiting piece, the cleaning brush can be stopped with the filter screen when the cleaning brush assembly rotates, the filter screen can be effectively cleaned, the cleaning brush scroll can return to the initial position when the filter screen is not cleaned, the rotation error of the cleaning brush assembly is reduced, the influence of inertia generated during rotation on the rotation precision is avoided, and the reliability of the self-cleaning mechanism is improved.

In some embodiments, the limiting member has a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion being located on two sides of the cleaning brush along a circumferential direction of the cleaning brush reel, respectively, the limiting member having a first position and a second position adapted to abut the stopper, the first limiting portion abutting the stopper when the first limiting member is located at the first position; when the first limiting part is positioned at the second position, the second limiting part is abutted with the stop part.

In some embodiments, the angle between the first limit portion and the second limit portion is α, which satisfies: alpha is more than 0 DEG and less than or equal to 180 deg.

In some embodiments, the α further satisfies: alpha is more than or equal to 120 degrees and less than or equal to 180 degrees.

In some embodiments, the side wall of the cleaning cavity is provided with the stop piece, the stop piece is provided with a first stop surface and a second stop surface, and when the first stop piece is positioned at the first position, the first stop part is stopped against the first stop surface; when the first limiting part is positioned at the second position, the second limiting part is abutted against the second stop surface.

In some embodiments, the cleaning brush is separated from the screen when the first stop is in the first position; when the first limiting piece is positioned at the second position, the cleaning brush is positioned on one side of the cleaning brush scroll adjacent to the first scroll so as to be suitable for brushing sundries on the filter screen.

In some embodiments, the indoor unit of the air conditioner further includes: the cleaning piece is arranged on the side wall of the cleaning cavity, which is opposite to the stop piece, and when the first limiting piece swings back and forth between the first position and the second position, the cleaning piece is suitable for brushing sundries on the cleaning brush.

In some embodiments, the cleaning brush is removably connected to the cleaning brush spool; and/or the cleaning element is detachably connected with the base.

In some embodiments, the cross-sectional shape of the stop is a right trapezoid, a curved trapezoid, a polygon, or a semicircle.

In some embodiments, the limiting member includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively disposed at an end of the cleaning brush reel along an axial direction of the cleaning brush reel, and orthographic projections of the first limiting member and the second limiting member along the axial direction of the cleaning brush reel coincide.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic perspective view of a housing according to an embodiment of the present utility model.

Fig. 2 is a perspective exploded view of a housing according to an embodiment of the present utility model.

Fig. 3 is a perspective exploded schematic view of a self-cleaning mechanism according to an embodiment of the present utility model.

Fig. 4 is a schematic cross-sectional view of a stop member in a first position according to an embodiment of the utility model.

Fig. 5 is a schematic cross-sectional view of a stop member in a second position according to an embodiment of the utility model.

Fig. 6 is a schematic cross-sectional view of a stop member between a first position and a second position in accordance with an embodiment of the utility model.

Fig. 7 is a schematic view of a first position when the stopper is trapezoidal according to an embodiment of the present utility model.

Fig. 8 is a schematic view of a second position when the stopper is trapezoidal according to an embodiment of the present utility model.

Fig. 9 is a schematic view of a first reel and a second reel according to an embodiment of the present utility model.

Reference numerals:

100. an air conditioner indoor unit;

10. a housing; 11. an air inlet;

40. a filter screen;

50. a self-cleaning mechanism; 51. a base; 511. cleaning the cavity; 5111. a stopper; 5112. a first stop surface; 5113. a second stop surface; 512. a cleaning member; 52. a first reel; 53. a second reel; 54. a cleaning brush assembly; 541. a limiting piece; 5411. a first limit part; 5412. a second limit part; 5413. a first limiting member; 542. a cleaning brush; 543. a cleaning brush reel; 55. a dust collection box; 551. a first opening; 552. a second opening;

60. a driving motor; 61. a drive gear; 62. a first driven gear; 63. and a second driven gear.

Detailed Description

Embodiments of the present utility model will be described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and an air conditioner indoor unit 100 according to an embodiment of the present utility model will be described below with reference to fig. 1 to 9, the air conditioner indoor unit 100 including: the housing 10, the indoor heat exchanger, the fan assembly, the at least one screen 40 and the at least one self-cleaning mechanism 50.

Specifically, as shown in fig. 1 to 3, an air inlet 11 and an air outlet are formed on the casing 10, the air inlet 11 is formed at the top of the casing 10, the air outlet can be formed at the front side of the casing 10, the indoor heat exchanger is arranged in the casing 10 and used for exchanging heat with indoor air entering from the air inlet 11, and the fan assembly is arranged at one side of the indoor heat exchanger far away from the air inlet 11 and used for enabling the indoor air to flow in from the air inlet 11 and be sent out from the air outlet after exchanging heat with the indoor heat exchanger. The filter screen 40 is arranged between the air inlet 11 and the indoor heat exchanger, and is used for filtering impurities in indoor air, namely, when the indoor air enters the shell 10 from the air inlet 11, the impurities are blown into the room sequentially through the filter screen 40, the indoor heat exchanger, the fan assembly and the air outlet, the possibility that the impurities contained in the indoor air block the indoor heat exchanger can be reduced after the indoor air is filtered by the filter screen 40, the working efficiency of the indoor heat exchanger is improved, the fan assembly has a drainage function, the air inlet quantity entering the indoor heat exchanger from the air inlet 11 can be conveniently increased, and the heat exchange capacity of the indoor heat exchanger is improved

The self-cleaning mechanism 50 is used for cleaning sundries on the filter screen 40, improves the filtering efficiency of the filter screen 40, and can effectively avoid sundries accumulation during long-term use of the filter screen 40. Referring to fig. 4 to 6, the self-cleaning mechanism 50 includes a base 51, a first reel 52, a second reel 53, a cleaning brush assembly 54, and a dust collection box 55, a cleaning chamber 511 having a first opening 551 at the top and a second opening 552 at the bottom is defined in the base 51, the first reel 52, the second reel 53, and the cleaning brush assembly 54 are pivotally connected to the base 51, respectively, the first reel 52 is located at the first opening 551, one end of the filter screen 40 is connected to the first reel 52, the other end of the filter screen 40 is connected to the second reel 53, the cleaning brush assembly 54 is provided in the cleaning chamber 511 for brushing off impurities on the filter screen 40 during winding of the filter screen 40 around the first reel 52 or release from the second reel 53, and the dust collection box 55 is provided at the second opening 552 for collecting impurities dropped on the cleaning brush 542. The cleaning brush assembly 54 includes a cleaning brush reel 543 and a cleaning brush 542, the cleaning brush 542 being provided on the cleaning brush reel 543, the cleaning brush 542 being rotated following the cleaning brush reel 543 by the cleaning brush reel 543. The cleaning brush reel 543 is provided with at least one limiting member 541, and the inner wall of the cleaning chamber 511 is provided with a stopping member 5111, wherein the limiting member 541 is adapted to stop against the stopping member 5111 so as to limit the rotation angle of the cleaning brush 542.

For example, after the indoor unit 100 of the air conditioner works for a period of time, indoor air continuously flows from the air inlet 11 to the indoor heat exchanger under the action of the fan assembly, and is sent to the room from the air outlet by the fan assembly after the indoor heat exchanger exchanges heat, as impurities attached to the filter screen 40 opposite to the air inlet 11 in the indoor unit 100 of the air conditioner increase, when the impurities on the filter screen 40 reach a certain amount, the sensor can transmit a signal to the controller to control the indoor unit 100 of the air conditioner to enter a self-cleaning mode. In the self-cleaning mode, the filter screen 40 moves relatively to the cleaning brush 542 under the action of the first rotating shaft and the second rotating shaft, and the cleaning brush 542 can be disposed opposite to different regions of the filter screen 40, and cleaning of the region of the filter screen 40 disposed opposite thereto is achieved. For example, when the first reel 52 and the second reel 53 rotate counterclockwise, the cleaning brush assembly 54 included in the self-cleaning mechanism 50 may rotate a certain angle, and when the limiting member 541 abuts against the stop member 5111, the cleaning brush 542 abuts against the first reel 52 to clean up the sundries on the filter screen 40 wound on the first reel 52, so that the sundries from the filter screen 40 fall into the dust box 55 to collect the sundries. In addition, the dust box 55 is detachable relative to the base 51, so that the dust box 55 can be separated from the base 51 after the sundries are collected, and the sundries in the dust box 55 can be cleaned conveniently. When the cleaning brush assembly 54 cleans the sundries on the filter screen 40, the cleaning brush 542 can be abutted against the stop piece 5111 on the inner wall of the cleaning cavity 511 to limit the rotation angle of the cleaning brush reel 543 due to the setting of the stop piece 541 after rotating for a certain angle, so that the cleaning brush 542 can be accurately abutted against the first reel 52 under the action of the cleaning brush reel 543 to clean the filter screen 40, and the possibility of deviation when the cleaning brush 542 is abutted against the filter screen 40 is reduced.

According to the indoor unit 100 of the air conditioner in the embodiment of the utility model, the limit piece 541 is arranged on the cleaning brush assembly 54, the stop piece 5111 is arranged on the inner wall of the cleaning cavity 511, the rotation angle of the cleaning brush assembly 54 is limited by the stop of the stop piece 5111 and the limit piece 541, so that the cleaning brush 542 can stop against the filter screen 40 when the cleaning brush assembly 54 rotates to effectively clean the filter screen 40, the cleaning brush scroll 543 can return to the initial position when the filter screen 40 is not cleaned, the rotation error of the cleaning brush assembly 54 is reduced, the influence of inertia generated during rotation on the rotation precision is avoided, and the reliability of the self-cleaning mechanism 50 is improved.

In some embodiments, as shown in fig. 4 and 5, the limiting member 541 has a first limiting portion 5411 and a second limiting portion 5412, where the first limiting portion 5411 and the second limiting portion 5412 are located on two sides of the cleaning brush 542 along the circumferential direction of the cleaning brush reel 543, and the limiting member 541 has a first position and a second position adapted to abut against the stopper 5111, and when the first limiting member 5413 is located at the first position, the first limiting portion 5411 abuts against the stopper 5111; when the first limiting member 5413 is located at the second position, the second limiting portion 5412 abuts against the stopper 5111. For example, the cleaning brush reel 543 rotates clockwise, when the limiting member 541 is located at the first position, the first limiting portion 5411 of the limiting member 541 abuts against the stopping member 5111, the stopping member 5111 limits the limiting member 541 to continue rotating, and when the cleaning brush 542 is not contacted with the filter screen 40 and the first limiting portion 5411 is located below the second limiting portion 5412, and the cleaning brush 542 is located below the central axis of the cleaning brush reel 543. The cleaning brush reel 543 rotates anticlockwise, when the limiting member 541 is located at the second position, the second limiting portion 5412 of the limiting member 541 is stopped against the stopping member 5111, the stopping member 5111 limits the limiting member 541 to continue rotating, when the cleaning brush 542 is stopped against the filter screen 40 at the second position, when the first reel 52 drives the filter screen 40 to rotate, the cleaning brush 542 can clean the filter screen 40, so that impurities attached to the filter screen 40 can fall into the dust box 55 from the cleaning cavity 511, and the first limiting portion 5411 and the second limiting portion 5412 respectively realize stopping against the stopping member 5111 at different positions of the stopping member 5111. Therefore, the first limiting portion 5411 and the second limiting portion 5412 are respectively abutted against the stop member 5111 at the first position and the second position, so that the cleaning brush reel 543 rotates to have different positions, the cleaning brush 542 can accurately rotate to the first position or the second position, dislocation of the cleaning brush 542 and the filter screen 40 under the action of inertia is avoided, and the cleaning effect of the cleaning brush 542 is reduced.

In some embodiments, referring to fig. 7 and 8, the included angle between the first and second limiting portions 5411 and 5412 is α, which satisfies: alpha is more than 0 DEG and less than or equal to 180 deg. That is, the first and second limiting portions 5411 and 5412 circumferentially spaced apart from each other are parallel to each other and pass through the center of the cleaning brush roller 543, so that the cleaning brush 542 can better abut against the stopper 5111 in the process from the first position to the second position, and the abutting effect of the stopper 541 and the stopper 5111 is better. Optionally, α further satisfies: alpha is more than or equal to 120 degrees and less than or equal to 180 degrees.

In some embodiments, as shown in fig. 7, a stopper 5111 is disposed on a side wall of the cleaning cavity 511, where the stopper 5111 has a first stopper surface 5112 and a second stopper surface 5113, and when the first stopper 5413 is in the first position, the first stopper 5411 is abutted against the first stopper surface 5112; when the first limiting member 5413 is located at the second position, the second limiting portion 5412 abuts against the second stop surface 5113. The first stop surface 5112 and the second stop surface 5113 are distributed along the upper and lower sides of the base 51, the first stop surface 5112 is located below the second stop surface 5113, and when the cleaning brush reel 543 rotates clockwise, the first limiting portion 5411 rotates to the position of the first stop surface 5112 to be stopped by the first stop surface 5112. In the process that the limiting member 541 rotates from the first position to the second position, the first limiting portion 5411 abuts against the stop member 5111, and then the second limiting portion 5412 abuts against the stop member 5111, and the cleaning brush 542 abuts against the filter 40 at the second position to clean the filter 40. Therefore, the first stop surface 5112 and the second stop surface 5113 are convenient for the first stop portion 5411 and the second stop portion 5412 to stop against the stop member 5111, so that the stability and reliability of the stop member 541 and the stop member 5111 are improved, and the rotation error of the cleaning brush reel 543 is reduced.

In some embodiments, referring to fig. 4-6, when the first stop 5413 is in the first position, the cleaning brush 542 is separated from the screen 40; when the first stopper 5413 is positioned at the second position, the cleaning brush 542 is positioned at a side of the cleaning brush reel 543 adjacent to the first reel 52, so as to be suitable for brushing off the sundries on the filter screen 40. For example, in the first position, the first limiting portion 5411 abuts against the stopper 5111, and the cleaning brush 542 is located on a side of the cleaning brush assembly 54 away from the first reel 52, and the indoor unit 100 of the air conditioner does not enter the self-cleaning mode. When the self-cleaning mode is started, the cleaning brush 542 rotates from the first position to the second position, the cleaning brush 542 is stopped against the filter screen 40, and impurities on the filter screen 40 can be brushed off along with the rotation of the first scroll 52. Thus, the first limiting member 5413 has at least a first position far away from the first filter screen 40 and a second position abutting against the filter screen 40, so that when the air conditioner indoor unit 100 needs to clean the filter screen 40, the cleaning brush assembly 54 can rotate to enable the first limiting member 5413 to abut against the blocking member 5111, so that the cleaning brush 542 can abut against the filter screen 40 to clean the filter screen 40. The first limiting member 5413 rotates between different positions to clean the filter screen 40, so that the cleaning degree of the cleaning brush 542 on the filter screen 40 can be increased, the position of the brush and the filter screen 40 is convenient to be accurately stopped, and the condition that the cleaning effect is not ideal due to dislocation of the cleaning brush 542 and the filter screen 40 is avoided.

In some embodiments, as shown in fig. 6, the air conditioner indoor unit 100 further includes: the cleaning member 512 is disposed on a side wall of the cleaning chamber 511 opposite to the stopper 5111, and the cleaning member 512 is adapted to brush off impurities on the cleaning brush 542 when the first stopper 5413 swings back and forth between the first position and the second position. For example, the stopper 5111 is disposed on the front wall of the cleaning cavity 511, the cleaning element 512 is disposed on the rear wall of the cleaning cavity 511, when the first limiting element 5413 needs to clean the filter screen 40, the cleaning element 512 contacts the cleaning brush 542 in the process of rotating from the first position to the second position, the cleaning element 512 can clean impurities on the cleaning brush 542, so as to ensure the cleaning of the cleaning brush 542, and when the second limiting portion 5412 abuts against the stopper 5111, the cleaning brush 542 cleaned by the cleaning element 512 can clean impurities on the filter screen 40 better, so as to improve the cleaning effect of the cleaning brush assembly 54 on the filter screen 40. When the first limiting member 5413 rotates from the second position to the first position, the cleaning brush 542 of the cleaning filter 40 is turned to the lower side of the cleaning member 512 after being cleaned by the cleaning member 512, the first limiting portion 5411 abuts against the stop member 5111, and the stop member 5111 can effectively form a limit on the first limiting member 5413. Thus, the cleaning member 512 can increase the cleaning of the cleaning brush 542, and the cleaning effect of the cleaning brush 542 on the filter screen 40 can be improved.

Alternatively, the cleaning brush 542 is detachably connected to the cleaning brush reel 543, and the cleaning member 512 is detachably connected to the base 51. Here, the cleaning brush 542 is detachably connected to the cleaning brush reel 543, and the cleaning brush 542 is detachably connected to the base 51, for example, the cleaning brush 542 may be sleeved on the cleaning brush reel 543, the first limiting member 5413 is disposed at an end of the cleaning brush reel 543, the cleaning brush reel 543 may limit rotation of the first limiting member 5413 in a circumferential direction of the cleaning brush reel, after the first limiting member 5413 is assembled with the cleaning brush reel 543, the first limiting member 5413 may rotate along with the cleaning brush reel 543, and the first limiting member 5413 may be separated from the cleaning brush reel 543 in an axial direction of the cleaning brush reel 543. The cleaning member 512 may be disposed in the cleaning chamber 511 along an axial direction of the cleaning brush reel 543. Thus, the cleaning brush 542 is detachably connected with the cleaning brush reel 543, and the cleaning member 512 is detachably connected with the base 51, so that the air conditioner indoor unit 100 can be conveniently installed, the installation flow and process of the air conditioner indoor unit 100 are simplified, and the installation efficiency of the air conditioner indoor unit 100 is improved.

In some embodiments, referring to fig. 4-8, the cross-sectional shape of the stopper 5111 is a right trapezoid, a curved trapezoid, a polygon, or a semicircle. The stopper 5111 may be detachably mounted on the front wall of the cleaning chamber 511, and the shape of the stopper 5111 may be selected according to the actual design, and is not particularly limited herein. Here, taking a state in which the first stopper 5413 and the stopper 5111 are in the first position and the second position, respectively, as an example, the stopper 5111 preferably has a right trapezoid shape in cross section. The stopper 5111 may be a hollow structural member. Therefore, the stoppers 5111 with different shapes can be applied to different occasions to increase the stopping between the first stopper 5413 and the stopper 5111, and the contact area between the first stopper 5413 and the stopper 5111 can be increased by the design of the cross-sectional shape, so as to improve the stopping stability between the first stopper 5413 and the stopper 5111.

In some embodiments, the limiting member 541 includes a first limiting member 5413 and a second limiting member 541, where the first limiting member 5413 and the second limiting member 541 are respectively disposed at an end of the cleaning brush spool 543 along an axial direction of the cleaning brush spool 543, and orthographic projections of the first limiting member 5413 and the second limiting member 541 along the axial direction of the cleaning brush spool 543 overlap. That is, the number of the limiting members 541 is two, the two limiting members 541 include a first limiting member 5413 and a second limiting member 541 (not shown in the drawings), the first limiting member 5413 and the second limiting member 541 are respectively disposed at the end portions of the cleaning brush spool 543, the first limiting member 5413 and the second limiting member 541 include a first limiting portion 5411 and a second limiting portion 5412 that are respectively disposed opposite to each other along the axial direction of the cleaning brush spool 543, that is, along the axial direction of the cleaning brush spool 543, and the first limiting portion 5411 of the first limiting member 5413 and the first limiting portion 5411 of the second limiting member 541 are orthographic projected to coincide. Therefore, the limiting piece 541 is arranged at the end part of the cleaning brush scroll 543, so that the installation and the disassembly of the limiting piece 541 can be facilitated, and the stability of rotation of the cleaning brush 542 is improved, so that the cleaning brush 542 can clean the filter screen 40 better.

In the process of using the cleaning brush assembly 54, at least one end of the cleaning brush assembly 54 is provided with a driving motor 60, the driving motor 60 is a stepping motor, the driving motor 60 drives the cleaning brush scroll 543 to rotate, when the filter screen 40 needs to be cleaned, a controller of the indoor air conditioner 100 can control the driving motor 60 to rotate so as to drive the cleaning brush 542 to rotate so as to clean the filter screen 40, for example, when the cleaning brush assembly 54 moves from a first position to a second position, the limiting piece 541 and the stopping piece 5111 are abutted against the position limiting the rotation of the cleaning brush scroll 543, so that the limiting of the driving motor 60 can be realized, and when the cleaning brush scroll 543 rotates from the second position to the first position, the initialization of the driving motor 60 can be ensured, so that the driving motor 60 is not influenced by the rotating inertia, the position accuracy of the driving motor 60 is ensured, and the service life of the driving motor 60 is prolonged.

Referring to fig. 9, a driving gear 61 is provided at a power output end of the driving motor 60, and the driving motor 60 rotates the first reel 52, the second reel 53, and the like through a transmission mechanism. The transmission mechanism comprises a first driven gear 62 and a second driven gear 63; the first driven gear 62 is mounted on one end of the first reel 52, the first driven gear 62 is engaged with the driving gear 61, the second driven gear 63 is mounted on one end of the second reel 53, and the second driven gear 63 is engaged with the first driven gear 62. In this embodiment, during the operation of the self-cleaning mechanism 50, the driving motor 60 operates, and the driving gear 61 on the power output end drives the first driven gear 62 to rotate, so as to drive the first spool 52 to rotate, and at the same time, the first driven gear 62 also drives the second driven gear 63 engaged with the first driven gear 62 to rotate, so as to drive the second spool 53 to rotate. Thereby, under the action of the first reel 52 and the second reel 53, the filter screen 40 tensioned between the first reel 52 and the second reel 53 moves along a predetermined trajectory, so that different areas on the filter screen 40 are sequentially opposed to the self-cleaning mechanism 50, and the filter screen 40 of different areas is cleaned by the self-cleaning mechanism 50. Optionally, the number of teeth of the first driven gear 62 and the second driven gear 63 are consistent, so as to ensure that the rotation speeds of the first reel 52 and the second reel 53 are consistent, and the filter screen 40 is always tensioned on the first reel 52 and the second reel 53.

Specifically, the driving mechanism drives the first reel 52 and the second reel 53 to rotate through the driving gear 61, so as to drive the filter screen 40 to move between the first reel 52 and the second reel 53, so that relative movement is generated between the filter screen 40 and the cleaning brush 542 which is abutted against the filter screen 40, the cleaning brush 542 cleans residual or attached sundries and flocks on the filter screen 40, the cleaned flocks fall into the dust box 55, and the dust box can be detached and cleaned manually when the sundries in the dust box 55 reach a certain amount. When the foreign matter on the screen 40 is below a certain amount, the sensor may transmit a signal to the controller to control the air conditioner indoor unit 100 to stop the self-cleaning mode.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features. In the description of the present utility model, "plurality" means two or more. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An indoor unit of an air conditioner, comprising:

the shell is provided with an air inlet and an air outlet;

the indoor heat exchanger is arranged in the shell and is used for exchanging heat with indoor air entering from the air inlet;

the fan assembly is arranged on one side, far away from the air inlet, of the indoor heat exchanger and is used for enabling indoor air to flow in from the air inlet and flow out from the air outlet after exchanging heat with the indoor heat exchanger;

the filter screen is arranged between the air inlet and the indoor heat exchanger and is used for filtering sundries in indoor air;

the cleaning mechanism comprises a base, a first scroll, a second scroll, a cleaning brush assembly and a dust collecting box, wherein a cleaning cavity with a first opening at the top and a second opening at the bottom is defined in the base, the cleaning brush assembly comprises a cleaning brush scroll and a cleaning brush, the cleaning brush is arranged on the cleaning brush scroll, the first scroll, the second scroll and the cleaning brush scroll are respectively and pivotably connected with the base, the first scroll is positioned at the first opening, one end of the filter screen is connected with the first scroll, the other end of the filter screen is connected with the second scroll, the cleaning brush is positioned in the cleaning cavity, the cleaning brush is used for brushing the impurities on the filter screen in the process of winding the first scroll or releasing the filter screen from the first scroll, the dust collecting box is arranged at the second opening and used for collecting the impurities falling on the cleaning brush, at least one stop piece is arranged on the cleaning brush, and the stop piece is suitable for limiting the cleaning brush is arranged on the inner wall of the cleaning cavity.

2. The indoor unit of claim 1, wherein the stopper has a first stopper portion and a second stopper portion, the first stopper portion and the second stopper portion being located on both sides of the cleaning brush in a circumferential direction of the cleaning brush reel, respectively, the stopper having a first position and a second position adapted to be stopped by the stopper,

when the limiting piece is positioned at the first position, the first limiting part is abutted against the stop piece;

when the limiting piece is located at the second position, the second limiting portion is abutted against the stopping piece.

3. The indoor unit of claim 2, wherein an included angle between the first limiting portion and the second limiting portion is α, and the α satisfies: alpha is more than 0 DEG and less than or equal to 180 deg.

4. An indoor unit for an air conditioner according to claim 3, wherein α further satisfies: alpha is more than or equal to 120 degrees and less than or equal to 180 degrees.

5. The indoor unit of claim 2, wherein the cleaning chamber has a sidewall with the stopper having a first stopper surface and a second stopper surface,

when the limiting piece is positioned at the first position, the first limiting part is abutted against the first stop surface;

when the limiting piece is located at the second position, the second limiting part is abutted against the second stop surface.

6. The indoor unit of claim 2, wherein the cleaning brush is separated from the screen when the stopper is in the first position;

when the limiting piece is positioned at the second position, the cleaning brush is positioned on one side of the cleaning brush scroll adjacent to the first scroll so as to be suitable for brushing sundries on the filter screen.

7. The indoor unit of an air conditioner according to any one of claims 2-6, further comprising:

the cleaning piece is arranged on the side wall of the cleaning cavity, which is opposite to the stop piece, and when the limiting piece swings back and forth between the first position and the second position, the cleaning piece is suitable for brushing off sundries on the cleaning brush.

8. The indoor unit of claim 7, wherein the cleaning brush is detachably connected to the cleaning brush reel; and/or

The cleaning piece is detachably connected with the base.

9. The indoor unit of claim 1, wherein the cross-sectional shape of the stopper is a right trapezoid, a curved trapezoid, a polygon, or a semicircle.

10. The indoor unit of claim 1, wherein the limiting members include a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively disposed at an end portion of the cleaning brush reel along an axial direction of the cleaning brush reel, and orthographic projections of the first limiting member and the second limiting member along the axial direction of the cleaning brush reel coincide.