CN218936593U - 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, at least one self-cleaning mechanism and a dust collecting box. The self-cleaning mechanism is used for removing sundries on the filter screen and comprises a base, a first scroll, a second scroll and a cleaning brush, wherein the base comprises a base body and a base front cover. The base front cover is pivotably provided at a front portion of the base body to be adapted to open and close a front side of the cleaning chamber. Therefore, the base front cover is arranged on the base, so that the base front cover can rotate relative to the base body, a cleaning cavity defined by the base can be opened and closed, the cleaning brush in the cleaning cavity can be regularly maintained and cleaned after the self-cleaning mechanism works for a period of time, and impurities such as dust or catkin and the like remained on the cleaning brush can be conveniently and deeply cleaned, so that the cleaning brush can be kept clean, the cleaning efficiency of the cleaning brush on the filter screen is improved, and the filter screen can keep higher filtering capacity.

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 keep the indoor unit of the air conditioner to operate efficiently, a cleaning brush is arranged in the indoor unit of the air conditioner, sundries attached to a filter screen are brushed into a collecting box by the cleaning brush, and the collecting box is cleaned regularly. However, residues are gradually formed in the long-term use process of the cleaning brush, so that the cleaning effect of the cleaning brush 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 to increase cleaning of a self-cleaning mechanism.

An indoor unit of an air conditioner according to an embodiment of a first aspect of the present utility model includes: the air conditioner comprises a shell, an indoor heat exchanger, a fan assembly, at least one filter screen, at least one self-cleaning mechanism and a dust collecting box, wherein an air inlet and an air outlet are formed in the shell; the filter screen is arranged between the air inlet and the indoor heat exchanger and is used for filtering sundries in indoor air; the self-cleaning mechanism is used for removing sundries on the filter screen and comprises a base, a first scroll, a second scroll and a cleaning brush, wherein the base comprises a base body and a base front cover, a cleaning cavity with a first opening at the top and a second opening at the bottom is defined between the base front cover and the base body, the base front cover is pivotably arranged at the front part of the base body and suitable for opening and closing the front side of the cleaning cavity, the first scroll, the second scroll and the cleaning brush are respectively and pivotably connected with the base body, 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 first scroll is positioned at the first opening, and the cleaning brush is arranged in the cleaning cavity and is used for brushing sundries on the filter screen during the process that the filter screen is wound on or released from the first scroll; the dust collection box is arranged at the second opening and is used for collecting sundries falling off from the cleaning brush.

According to the indoor unit of the air conditioner, the base front cover is arranged on the base, so that the base front cover can rotate relative to the base body to open and close the cleaning cavity defined by the base, after the self-cleaning mechanism works for a period of time, the cleaning brush in the cleaning cavity can be regularly maintained and cleaned, and residual dust or sundries such as catkin and the like on the cleaning brush can be conveniently and deeply cleaned, so that the cleaning brush can be kept clean, the cleaning efficiency of the cleaning brush on the filter screen is improved, and the filter screen can keep higher filtering capacity.

In some embodiments, the base body includes two end caps spaced apart along a length direction of the housing, and pivot holes are formed in the two end caps, respectively; the base front cover is provided with a pivot shaft extending along the length direction of the shell, and two ends of the pivot shaft are respectively and pivotally matched in the pivot holes of the two end covers.

In some embodiments, the pivot shaft is located at an upper portion of the base front cover, and a lower portion of the base front cover is rotatable about a central axis of the pivot hole to open and close a front side of the cleaning chamber.

In some embodiments, the base front cover comprises: the avoidance section is positioned between the two end covers, and the pivot shaft is connected to one side of the avoidance section, which is far away from the cleaning brush; the upper end of the extension section is connected with the lower end of the avoidance section, and the lower end of the extension section is matched with the dust collection box.

In some embodiments, the avoidance section is formed in an arc shape protruding toward a direction away from a central axis of the cleaning brush, and a central line of the avoidance section coincides with the central axis of the cleaning brush.

In some embodiments, at least one of the two end caps is provided with a hook, at least one end of the extension section along the length direction of the housing is provided with an extension plate, a through hole is formed in the extension plate, the hook is detachably matched with the through hole, the base front cover keeps closed the front side of the cleaning cavity when the hook is matched in the through hole, and the base front cover is suitable for rotating around the central axis of the pivot hole to open the front side of the cleaning cavity when the hook is separated from the through hole.

In some embodiments, positioning grooves are formed on the front sides of the two end covers, positioning protrusions protruding out of the two ends of the extension section are respectively arranged on the two ends of the extension section along the length direction of the shell, and when the base front cover closes the front side of the cleaning cavity, the positioning protrusions on the two ends of the extension section are matched in the positioning grooves of the two end covers.

In some embodiments, the top surface of the positioning protrusion extends obliquely downwards from front to back, and the shape of the positioning groove is matched with the shape of the positioning protrusion.

In some embodiments, a connecting piece is connected between the two end covers, the lower end of the connecting piece extends obliquely downwards from front to back, and when the front side of the cleaning cavity is closed by the front cover of the base, the upper end of the avoidance section is abutted with the lower end of the connecting piece.

In some embodiments, the length of the dust box along the length of the housing is greater than the length of the cleaning brush along the length of the housing.

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 portion according to an embodiment of the 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 utility model.

Fig. 4 is a perspective exploded view of a base according to an embodiment of the present utility model.

Fig. 5 is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present utility model.

Fig. 6 is an enlarged schematic view of the region P in fig. 5.

Reference numerals:

100. an air conditioner indoor unit;

10. a housing; 11. An air inlet;

20. an indoor heat exchanger; 30. A fan assembly; 40. A filter screen;

50. a self-cleaning mechanism; 51. a base; 511. a base body; 512. a base front cover; 5121. a pivot shaft; 5122. an avoidance section; 5123. an extension section; 5124. an extension plate; 5125. a through hole; 5126. positioning the bulge; 513. an end cap; 5131. a pivot hole; 5132. a hook; 5133. a positioning groove; 52. a first reel; 53. a second reel; 54. a cleaning brush; 55. cleaning the cavity; 551. a first opening; 552. a second opening; 56. a connecting piece;

60. a dust collecting box.

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 6, the air conditioner indoor unit 100 including: the air conditioner comprises a housing 10, an indoor heat exchanger 20, a fan assembly 30, at least one filter screen 40, at least one self-cleaning mechanism 50 and a dust box 60.

Specifically, as shown in fig. 1 to 6, an air inlet 11 and an air outlet are formed in the casing 10, the indoor heat exchanger 20 is disposed in the casing 10, and is used for exchanging heat with indoor air entering from the air inlet 11, and the fan assembly 30 is disposed on a side of the indoor heat exchanger 20 away from the air inlet 11, and is used for making indoor air flow in from the air inlet 11, exchanging heat with the indoor heat exchanger 20, and then being sent out from the air outlet. The filter screen 40 is arranged between the air inlet 11 and the indoor heat exchanger 20, so that indoor air entering from the air inlet 11 can be filtered by the filter screen 40, and sundries in the indoor air can be filtered by the filter screen 40, so that the indoor air entering the indoor heat exchanger 20 is cleaner, and the phenomenon that the indoor heat exchanger 20 is blocked by impurities in the indoor air to influence the working efficiency of the indoor heat exchanger 20 is avoided. 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.

The self-cleaning mechanism 50 comprises a base 51, a first scroll 52, a second scroll 53 and a cleaning brush 54, wherein the base 51 comprises a base body 511 and a base front cover 512, a cleaning cavity 55 with a first opening 551 at the top and a second opening 552 at the bottom is defined between the base front cover 512 and the base body 511, and the first scroll 52, the second scroll 53 and the cleaning brush 54 are all arranged in the cleaning cavity 55. The base front cover 512 is pivotally provided at the front of the base body 511 to be adapted to open and close the front side of the cleaning chamber 55, the first reel 52, the second reel 53 and the cleaning brush 54 are pivotally connected to the base body 511, respectively, 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 first reel 52 is located at the first opening 551, the dust box 60 is provided at the second opening 552, and the cleaning brush 54 provided in the base 51 is used to brush off impurities on the filter screen 40 during the process of winding the filter screen 40 around the first reel 52 or releasing from the first reel 52, for collecting the impurities dropped on the cleaning brush 54. Here, the screen 40 is wound around the first reel 52 as an example. During the cleaning process of the self-cleaning mechanism 50, during the process of winding the filter screen 40 on the first reel 52, the cleaning brush 54 is at least partially contacted with the filter screen 40, and along with the winding and releasing of the filter screen 40, the cleaning brush 54 and the filter screen 40 generate relative motion, so that sundries on the filter screen 40 can be brushed off.

For example, after the indoor unit 100 of the air conditioner is operated for a period of time, as indoor air continuously flows from the air inlet 11 to the indoor heat exchanger 20 under the action of the fan assembly 30, the indoor air is sent to the room from the air outlet by the fan assembly 30 after heat exchange of the indoor heat exchanger 20, 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 54 under the action of the first rotating shaft and the second rotating shaft, and the cleaning brush 54 can be opposite to different areas of the filter screen 40 and can clean the area of the filter screen 40 opposite to the area. For example, when the first reel 52 and the second reel 53 rotate counterclockwise, the cleaning brush 54 included in the self-cleaning mechanism 50 may abut 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 60 to collect the sundries. And because the dust box 60 is detachable relative to the base 51, the dust box 60 can be separated from the base 51 after the sundries are collected, and the sundries in the dust box 60 can be cleaned conveniently. The base front cover 512 is rotatable relative to the base body 511 to open and close the cleaning cavity 55 defined by the base 51, so that the cleaning state inside the cleaning cavity 55 can be conveniently observed from the front side of the base body 511, meanwhile, as part of sundries are attached to the cleaning brush 54 after the cleaning brush 54, the first scroll 52 and the second scroll 53 work for a long time and are difficult to clean, the sundries are difficult to automatically fall into the dust box 60, and the cleaning of the cleaning brush 54 is realized after the rotatable base front cover 512 is opened.

According to the indoor unit 100 of the air conditioner in the embodiment of the utility model, the base front cover 512 is arranged on the base 51, so that the base front cover 512 can rotate relative to the base body 511 to open and close the cleaning cavity 55 defined by the base 51, after the self-cleaning mechanism 50 works for a period of time, the cleaning brush 54 in the cleaning cavity 55 can be regularly maintained and cleaned, and impurities such as dust or catkin and the like remained on the cleaning brush 54 can be conveniently and deeply cleaned, so that the cleaning brush 54 is kept clean, the cleaning efficiency of the cleaning brush 54 on the filter screen 40 is improved, and the filter screen 40 is kept high in filtering capacity.

In some embodiments, as shown in fig. 2 to 4, the base body 511 includes two end caps 513 spaced apart along the length direction of the housing 10, and the two end caps 513 are formed with pivot holes 5131, respectively; the base front cover 512 is provided with a pivot shaft 5121 extending along the length direction of the casing 10, the pivot shaft 5121 is arranged on one side of the base front cover 512 far away from the center of the cleaning cavity 55, and two ends of the pivot shaft 5121 are respectively and pivotally matched in the pivot holes 5131 of the two end covers 513. That is, the end cover 513 is provided with a pivot hole 5131 for realizing the rotation of the base front cover 512, the base front cover 512 is provided with a pivot shaft 5121 opposite to the pivot hole 5131, the base front cover 512 and the end cover 513 of the base body 511 are in pivot connection through the arrangement of the pivot shaft 5121 and the pivot hole 5131, the structure for realizing the pivot connection is simple, and the base front cover 512 can be conveniently turned upwards to open the cleaning cavity 55 under the action of external force to clean the cleaning brush 54. Of course, a pivot shaft 5121 may be provided on a side of the end cap 513 adjacent to the center of the cleaning chamber 55, and pivot holes 5131 may be provided on both ends of the base front cover 512 in the longitudinal direction of the housing 10, so that the base front cover 512 and the end cap 513 are engaged. Therefore, by providing the pivot hole 5131 and the pivot shaft 5121 on the end cover 513 and the base front cover 512 respectively, the base front cover 512 is connected with the base body 511 through the cooperation of the pivot shaft 5121 and the pivot hole 5131, and meanwhile, the base front cover 512 rotates relative to the base body 511, so that the structure that the base front cover 512 rotates relative to the base body 511 is simplified, and the cleaning of the interior of the cleaning cavity 55 is facilitated.

In some embodiments, as shown in fig. 5 and 6, the pivot shaft 5121 is located at an upper portion of the base front cover 512, and a lower portion of the base front cover 512 is rotatable about a central axis of the pivot hole 5131 to open and close a front side of the cleaning chamber 55. That is, the base front cover 512 provided at the front side of the base 51 may be turned upward to open the cleaning chamber 55, and after the cleaning brush 54 inside is cleaned, the base front cover 512 is turned over to close the front side of the cleaning chamber 55. Meanwhile, the pivot shaft 5121 is disposed at the upper portion of the base front cover 512, so as to facilitate the stability of the installation of the base front cover 512, so as to more easily close the front side of the cleaning chamber 55 under the action of self gravity of the base front cover 512, and increase the tightness of the cleaning chamber 55. Thus, the pivot shaft 5121 is disposed on the upper portion of the base front cover 512, so that the lower portion of the base front cover 512 can rotate around the central axis of the pivot hole 5131, which is convenient for opening the cleaning chamber 55, and increases the stability of the connection between the base front cover 512 and the base body 511.

Optionally, referring to fig. 4 and 6, the base front cover 512 includes: the avoidance section 5122 and the extension section 5123, wherein the avoidance section 5122 is positioned between the two end covers 513, and the pivot shaft 5121 is connected to one side of the avoidance section 5122 far away from the cleaning brush 54; the upper end of the extension 5123 is connected to the lower end of the escape section 5122, and the lower end of the extension 5123 is engaged with the dust box 60. The base front cover 512 is a part of the cleaning cavity 55, and is used for forming a seal on the cleaning cavity 55 at the front side of the cleaning cavity 55, the avoidance section 5122 is located above the extension section 5123, the avoidance section 5122 is opposite to the cleaning brush 54 along the front-back direction of the shell 10, the pivot shaft 5121 is arranged at one side of the avoidance section 5122 away from the cleaning brush 54, when the base front cover 512 is matched with the base body 511, one end of the extension section 5123 away from the avoidance section 5122 along the up-down direction is matched with the upper part of the dust box 60, that is, when the dust box 60 is assembled with the base body 511, the upper part of the dust box 60 is matched with the base front cover 512 so as to form a seal on the cleaning cavity 55 at the front side and the lower side of the base body 511. Therefore, the arrangement of the avoiding section 5122 can increase the rationality of the arrangement of the base front cover 512, avoid the interference of the base front cover 512 with the installation of the inner scroll of the cleaning cavity 55 or the cleaning brush 54, and the like, and rotate, etc., and the extending section 5123 can better form the seal on the front side of the cleaning cavity 55, thereby being convenient for the installation of the base front cover 512 and the base body 511.

In some embodiments, as shown in fig. 6, the escape section 5122 is formed in an arc shape protruding toward a direction away from the central axis of the cleaning brush 54, and the central line of the escape section 5122 coincides with the central axis of the cleaning brush 54. Dodge section 5122 and cleaning brush 54 coaxial setting can avoid producing the interference with cleaning brush 54 when base protecgulum 512 joins in marriage with base body 511, simultaneously, can increase the utilization ratio to the base 51 space, inject the interval between base protecgulum 512 and the cleaning brush 54, so that the dust particle thing etc. that the cleaning brush 54 roll in-process produced can be along dodging section 5122 and fall naturally, be favorable to the dust to concentrate and fall in dust collection box 60, can reduce the raise dust of cleaning cavity 55 inside, increase the speed that debris kept stand, reduce the volume of self-cleaning mechanism 50, be favorable to the integration and the miniaturized design of self-cleaning mechanism 50.

In some embodiments, as shown in fig. 4, at least one of the two end caps 513 is provided with a hook 5132, at least one end of the extension 5123 in the length direction of the housing 10 is provided with an extension plate 5124, a through hole 5125 is formed in the extension plate 5124, the hook 5132 is detachably engaged with the through hole 5125, the base front cover 512 keeps closing the front side of the cleaning chamber 55 when the hook 5132 is engaged in the through hole 5125, and the base front cover 512 is adapted to rotate around the central axis of the pivot hole 5131 to open the front side of the cleaning chamber 55 when the hook 5132 is separated from the through hole 5125. For example, hooks 5132 are respectively disposed on one side of the two end covers 513 adjacent to the cleaning chamber 55, through holes 5125 are respectively disposed at two ends of the base front cover 512 along the length direction of the housing 10, the through holes 5125 are disposed on the extending plate 5124 of the extending section 5123 adjacent to one side of the cleaning brush 54, when the base front cover 512 is connected with the base body 511, the base front cover 512 and the end covers 513 are pivotally connected at the upper part through the pivot shaft 5121 and the pivot hole 5131, the base front cover 512 and the end covers 513 are detachably connected at the lower part through the hooks 5132 and the through holes 5125, and when the cleaning brush 54 needs to be cleaned, the base front cover 512 can separate the hooks 5132 from the through holes 5125 under the external force, so that the base front cover 512 can be turned upwards around the center of the pivot hole 5131 to open the base front cover 512, thereby facilitating the deep cleaning of the cleaning brush 54. Therefore, the hook 5132 is arranged on the end cover 513, the through hole 5125 is arranged on the base front cover 512, so that the base front cover 512 is connected with the end cover 513, the stability of the connection between the base front cover 512 and the base body 511 is improved, the base front cover 512 and the end cover 513 are conveniently opened below the base front cover 512, the hook 5132 and the through hole 5125 are matched to realize the detachable connection of the base front cover 512, and the detachable connection is simple in structure and high in reliability.

In some embodiments, as shown in fig. 4, a positioning groove 5133 is formed on the front side of the two end covers 513 and on the side adjacent to the cleaning chamber 55, positioning protrusions 5126 protruding from two ends of the extending section 5123 are respectively disposed on two ends of the extending section 5123 along the length direction of the housing 10, that is, the positioning protrusions 5126 are located on one side of the extending section 5123 away from the center of the cleaning chamber 55, when the front side of the cleaning chamber 55 is closed by the front cover 512 of the base, the positioning protrusions 5126 on two ends of the extending section 5123 are fitted in the positioning grooves 5133 of the two end covers 513, and the front side of the fitted front cover 512 of the base is flush with the front side of the end covers 513. Therefore, the end cover 513 is provided with the positioning groove 5133, the base front cover 512 is provided with the positioning protrusion 5126, the positioning protrusion 5126 is matched with the positioning groove 5133 to realize the installation of the base front cover 512 and the base body 511, the positioning groove 5133 can form the limit of the base front cover 512, and the accurate installation of the base front cover 512 and the end cover 513 is convenient. In addition, the positioning groove 5133 may be provided on the base front cover 512, and the positioning protrusion 5126 may be provided on the end cover 513, which is not particularly limited herein.

In some embodiments, the top surface of the positioning protrusion 5126 extends obliquely downward from front to back, and the shape of the positioning groove 5133 is adapted to the shape of the positioning protrusion 5126. That is, the top of the positioning protrusion 5126 is formed with a first inclined surface extending obliquely, and the first inclined surface gradually inclines toward the cleaning brush 54 from the upper side to the lower side of the positioning protrusion 5126, and the upper side of the positioning groove 5133 is provided with a second inclined surface which is in guiding fit with the first inclined surface. Thus, the inclined extension of the top surface of the positioning projection 5126 can facilitate the engagement of the base front cover 512 with the end cover 513, increasing the efficiency of the assembly of the base front cover 512 with the end cover 513.

In some embodiments, as shown in fig. 2 and 4, a connecting member 56 is connected between the two end caps 513, and the lower end of the connecting member 56 extends obliquely downward from front to rear, and when the base front cover 512 closes the front side of the cleaning chamber 55, the upper end of the escape section 5122 is stopped against the lower end of the connecting member 56. The connecting member 56 is connected between the two end covers 513, the connecting member 56 is arranged above the base front cover 512, the connecting member 56 extends obliquely from top to bottom towards the cleaning brush 54 adjacent to the lower side of the base front cover 512, when the base front cover 512 is assembled with the base body 511, the upper end of the escape section 5122 of the base front cover 512 is abutted against the lower end of the connecting member 56, when the base front cover 512 closes the cleaning cavity 55, the lower end of the connecting member 56 is abutted against the upper end of the escape section 5122 and the pivot shaft 5121, and when the base front cover 512 opens the cleaning cavity 55, the base front cover 512 rotates around the pivot hole 5131, and the upper end of the escape section 5122 is separated from the lower end of the connecting member 56. Therefore, the connecting piece 56 is arranged between the end covers 513, so that the structural strength of the base 51 can be increased, the lower end of the connecting piece 56 is stopped against the upper end of the avoiding section 5122 when the base front cover 512 and the cleaning cavity 55 are closed, the tightness between the base front cover 512 and the connecting piece 56 can be improved, and dust and the like generated when the cleaning brush 54 in the cleaning cavity 55 works can be prevented from overflowing from the connecting position.

Alternatively, the length of the dust box 60 along the length direction of the housing 10 is greater than the length of the cleaning brush 54 along the length direction of the housing 10. That is, the length of the dust box 60 is greater than the length of the cleaning brush 54 in the length direction of the casing 10, so that the sundries brushed off from the filter screen 40 by the cleaning brush 54 during operation of the self-cleaning mechanism 50 can fall into the dust box 60, the possibility that the sundries fall out of the dust box 60 is avoided, the indoor unit 100 of the air conditioner is cleaner and cleaner, and the normal operation of the circuit system is prevented from being influenced by the accumulation of sundries such as dust and the like in the casing 10.

In some embodiments, the indoor unit 100 of the air conditioner further includes a driving mechanism (not shown), the driving mechanism may be a driving motor, a power output end of the driving motor is provided with a driving gear, and the driving mechanism drives the first scroll 52, the second scroll 53, and the like to rotate through a transmission mechanism. The transmission mechanism comprises a first driven gear and a second driven gear; the first driven gear is mounted at one end of the first reel 52, and is meshed with the driving gear; the second driven gear is mounted to one end of the second reel 53, and the second driven gear is engaged with the first driven gear. In this embodiment, during the operation of the self-cleaning mechanism 50, the driving motor operates, and the driving gear on the power output end drives the first driven gear to rotate, so as to drive the first reel 52 to rotate, and meanwhile, the first driven gear also drives the second driven gear meshed with the first driven gear to rotate, so as to drive the second reel 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 and the second driven gear are consistent, so as to ensure that the rotation speeds of the first scroll 52 and the second scroll 53 are consistent, and the filter screen 40 is always tensioned on the first scroll 52 and the second scroll 53.

Specifically, the driving mechanism drives the first scroll 52 and the second scroll 53 to rotate through the driving gear, so as to drive the filter screen 40 to move between the first scroll 52 and the second scroll 53, so that the filter screen 40 and the cleaning brush 54 abutted against the filter screen 40 move relatively, the cleaning brush 54 cleans residual or attached sundries and flocks on the filter screen 40, the cleaned flocks fall into the dust collecting box 60, and the dust collecting box can be detached and cleaned manually when the sundries in the dust collecting box 60 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;

at least one self-cleaning mechanism for removing impurities on the filter screen, the self-cleaning mechanism comprising a base, a first reel, a second reel and a cleaning brush, the base comprising a base body and a base front cover, a cleaning cavity having a first opening at the top and a second opening at the bottom being defined between the base front cover and the base body, the base front cover being pivotably provided at the front of the base body to be adapted to open and close the front side of the cleaning cavity, the first reel, the second reel and the cleaning brush being pivotably connected to the base body, respectively, one end of the filter screen being connected to the first reel, the other end of the filter screen being connected to the second reel, the first reel being located at the first opening, the cleaning brush being provided in the cleaning cavity for brushing impurities on the filter screen during winding or releasing of the filter screen on the first reel;

the dust collecting box is arranged at the second opening and is used for collecting sundries falling off from the cleaning brush.

2. The indoor unit of claim 1, wherein the base body includes two end caps spaced apart along a length direction of the housing, and pivot holes are formed in the two end caps, respectively;

the base front cover is provided with a pivot shaft extending along the length direction of the shell, and two ends of the pivot shaft are respectively and pivotally matched in the pivot holes of the two end covers.

3. The indoor unit of claim 2, wherein the pivot shaft is located at an upper portion of the base front cover, and a lower portion of the base front cover is rotatable about a central axis of the pivot hole to open and close a front side of the cleaning chamber.

4. The indoor unit of claim 3, wherein the base front cover comprises:

the avoidance section is positioned between the two end covers, and the pivot shaft is connected to one side of the avoidance section, which is far away from the cleaning brush;

the upper end of the extension section is connected with the lower end of the avoidance section, and the lower end of the extension section is matched with the dust collection box.

5. The indoor unit of claim 4, wherein the escape section is formed in an arc shape protruding toward a direction away from a central axis of the cleaning brush, and a central line of the escape section coincides with the central axis of the cleaning brush.

6. The indoor unit of claim 4, wherein at least one of the two end covers is provided with a hook;

at least one end of the extension section along the length direction of the shell is provided with an extension plate, a through hole is formed in the extension plate, the clamping hook is detachably matched with the through hole, the front side of the cleaning cavity is kept closed by the front cover of the base when the clamping hook is matched in the through hole, and the front side of the cleaning cavity is opened by rotating the front cover of the base around the central axis of the pivot hole when the clamping hook is separated from the through hole.

7. The indoor unit of claim 4, wherein the front sides of both the end covers are formed with positioning grooves;

the two ends of the extension section along the length direction of the shell are respectively provided with positioning protrusions protruding out of the two ends of the extension section, and when the front side of the cleaning cavity is closed by the front cover of the base, the positioning protrusions at the two ends of the extension section are matched in the positioning grooves of the two end covers.

8. The indoor unit of claim 7, wherein the top surface of the positioning protrusion extends obliquely downward from front to rear, and the positioning groove has a shape corresponding to the shape of the positioning protrusion.

9. The indoor unit of claim 4, wherein a connecting member is connected between the two end covers, and a lower end of the connecting member is inclined downward from front to rear;

when the front cover of the base closes the front side of the cleaning cavity, the upper end of the avoidance section is abutted with the lower end of the connecting piece.

10. The indoor unit of any one of claims 1-9, wherein a length of the dust box along a length direction of the housing is greater than a length of the cleaning brush along the length direction of the housing.

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