CN112747361A

CN112747361A - Indoor unit of air conditioner

Info

Publication number: CN112747361A
Application number: CN202110184171.4A
Authority: CN
Inventors: 周文伟; 刘慧�; 潘正伟; 洪丽; 杨永祥
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2021-05-04

Abstract

The invention provides an air-conditioning indoor unit, comprising: the fan blade is rotatably arranged in the indoor unit shell; the cleaning brush is movably arranged in the shell of the indoor unit and is provided with a cleaning position and an avoiding position; when the cleaning brush is in the cleaning position, the brush head of the cleaning brush is contacted with the fan blade; when the cleaning brush is in the avoiding position, the brush head and the fan blade of the cleaning brush are arranged at intervals; the dust collecting box is provided with a dust collecting opening and a dust collecting cavity communicated with the dust collecting opening, and the dust collecting opening faces the fan blade. Through the technical scheme provided by the invention, the technical problem of poor air outlet quality of the air conditioner indoor unit in the prior art can be solved.

Description

Indoor unit of air conditioner

Technical Field

The invention relates to the technical field of air-conditioning indoor units, in particular to an air-conditioning indoor unit.

Background

At present, along with the continuous improvement of living standard, people pay more and more attention to air quality. Generally, as the air conditioner is used for a longer time, internal parts of the air conditioner become dirty. Therefore, when the air conditioner is started, air passes through the air conditioner circulation, and unclean dust in the air conditioner can be brought out. In the prior art, there is a self-cleaning technology for the evaporator components inside the air conditioner to clean the evaporator.

However, because the fan blades are arranged in the middle of the air conditioner, hands cannot stretch into the air conditioner to clean the fan blades. Meanwhile, the technology of automatically cleaning the fan blades does not exist in the prior art, the air conditioner fan blades are used for circulating air and are places where air must pass, and therefore the air outlet quality of the air conditioner is inevitably affected.

Disclosure of Invention

The invention mainly aims to provide an air conditioner indoor unit, which aims to solve the technical problem that the air outlet quality of the air conditioner indoor unit in the prior art is poor.

In order to achieve the above object, the present invention provides an indoor unit of an air conditioner, comprising: the fan blade is rotatably arranged in the indoor unit shell; the cleaning brush is movably arranged in the shell of the indoor unit and is provided with a cleaning position and an avoiding position; when the cleaning brush is in the cleaning position, the brush head of the cleaning brush is contacted with the fan blade; when the cleaning brush is in the avoiding position, the brush head and the fan blade of the cleaning brush are arranged at intervals; the dust collecting box is provided with a dust collecting opening and a dust collecting cavity communicated with the dust collecting opening, and the dust collecting opening faces the fan blade.

Furthermore, an air duct is arranged in the indoor unit shell, the fan blade and the cleaning brush are both located in the air duct, at least part of the fan blade is located below the cleaning brush, a communicating port is formed in the bottom of the air duct, the dust collecting box is mounted on the indoor unit shell, and the dust collecting port is communicated with the communicating port.

Furthermore, a first clamping structure is arranged at the bottom of the indoor unit shell, and a second clamping structure matched with the first clamping structure is arranged on the dust collection box, so that the dust collection box can be detachably mounted on the indoor unit shell.

Further, the bottom of the indoor unit casing is provided with an air outlet, the dust collecting box is arranged at an interval with the air outlet, the bottom of the dust collecting box is provided with a digging and connecting groove and a digging and connecting plate, and the digging and connecting plate is arranged at a digging and connecting opening of the digging and connecting groove.

Further, be provided with the wind channel in the indoor set casing, fan blade and cleaning brush all are located the wind channel, and the indoor set of air conditioning still includes: the dust guard is movably arranged at the bottom of the air duct and is provided with a dust guard position and a wind shielding position; when the dust baffle is in the dust-blocking position, the dust baffle protrudes out of the inner wall of the air duct; when the dust guard is in the wind shielding position, at least part of the dust guard is attached to the inner wall of the air duct.

Furthermore, a communicating opening is formed in the air duct, the communicating opening is communicated with the dust collecting opening, and the dust baffle plate is movably arranged at the communicating opening; when the dust blocking plate moves to the dust blocking position, the dust blocking plate avoids the communicating opening so that dust enters the dust collecting opening through the communicating opening; when the dust guard moves to the wind shielding position, the dust guard covers the communication opening.

Further, the air conditioning indoor unit further includes: the dust collecting fan blade is rotatably arranged in the dust collecting cavity so as to provide driving force for collecting dust through the dust collecting fan blade.

Furthermore, the dust collecting box is a strip-shaped box body, and the strip-shaped box extends along the extension direction of the indoor unit shell; the dust collecting fan blades are strip-shaped fan blades which extend along the extension direction of the dust collecting box.

Further, when the washing brush is in the avoiding position, the brush head of the washing brush is arranged towards the bottom of the indoor unit shell.

Further, the cleaning brush includes main part and brush, is provided with the mounting groove on the main part, and the brush is installed in the mounting groove, and at least part protrusion in the mounting groove setting of brush is in order to form the brush head of cleaning brush.

Furthermore, an air duct is arranged in the indoor unit shell, when the cleaning brush is in the avoiding position, the main body part of the cleaning brush is attached to at least part of the air duct, and the brush head of the cleaning brush is arranged obliquely downwards.

By applying the technical scheme of the invention, the fan blade can be effectively cleaned through the cleaning brush so as to sweep dust on the fan blade. Meanwhile, the dust falling from the fan blades can enter the dust collecting cavity conveniently through the dust collecting opening, so that the dust falling from the fan blades is prevented from scattering to the inside of the indoor unit of the air conditioner and being discharged from the air outlet, and the cleanliness of air outlet air can be better ensured to ensure the air outlet quality. Therefore, the technical problem of poor air outlet quality of the air conditioner indoor unit in the prior art can be solved through the technical scheme provided by the invention.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a sectional view showing a cleaning brush of an indoor unit of an air conditioner according to an embodiment of the present invention in an escape position;

FIG. 2 shows a partial enlarged view of FIG. 1;

fig. 3 is a schematic view illustrating a structure in which a brush is provided on a bottom case of an indoor unit case according to an embodiment of the present invention;

fig. 4 is a sectional view showing a washing brush of an indoor unit of an air conditioner according to an embodiment of the present invention in a washing position;

FIG. 5 is a schematic view of a dust barrier provided in accordance with an embodiment of the present invention mounted to an indoor unit housing;

fig. 6 is a sectional view showing a cleaning brush of an indoor unit of an air conditioner according to an embodiment of the present invention in a cleaning position and a dust guard in a dust guard position;

FIG. 7 shows a partial enlarged view of FIG. 6;

FIG. 8 is a schematic view of the dust shield of FIG. 7 in a wind-sheltered position;

fig. 9 is a schematic structural view of an air conditioning indoor unit according to an embodiment of the present invention;

FIG. 10 shows a partial enlarged view of FIG. 9;

fig. 11 shows a schematic structural view of a dust collecting box and a dust collecting blade provided according to an embodiment of the present invention;

figure 12 shows a schematic view of a dust bin provided in accordance with an embodiment of the present invention mounted on an indoor unit housing;

FIG. 13 shows a partial enlarged view of FIG. 12;

figure 14 shows a mounting schematic for a dust bin on an indoor unit housing provided in accordance with an embodiment of the invention;

FIG. 15 shows a partial enlarged view of FIG. 14;

fig. 16 is a schematic diagram illustrating the cleaning operation of the indoor unit of an air conditioner according to the embodiment of the present invention when cleaning the fan blade, the dust on the fan blade falls into the dust collecting box.

Wherein the figures include the following reference numerals:

10. an indoor unit casing; 11. an air duct; 12. a communication port; 13. a first clamping structure; 14. an air outlet; 20. a fan blade; 30. cleaning brushes; 31. a main body portion; 32. a brush; 40. a dust collecting box; 41. a dust collection port; 42. a dust collection chamber; 43. a second clamping structure; 44. digging and connecting the groove; 45. digging and connecting the plates; 50. a dust guard; 60. dust collecting fan blades; 70. an evaporator; 80. the motor is driven.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 16, the present invention provides an indoor unit of an air conditioner, which includes an indoor unit casing 10, a fan blade 20, a cleaning brush 30 and a dust collecting box 40, wherein the fan blade 20 is rotatably disposed in the indoor unit casing 10, the cleaning brush 30 is movably disposed in the indoor unit casing 10, and the cleaning brush 30 has a cleaning position and an avoiding position. When the washing brush 30 is in the washing position, the brush head of the washing brush 30 contacts with the fan blade 20. When the cleaning brush 30 is in the avoiding position, the brush head of the cleaning brush 30 and the fan blade 20 are arranged at intervals. The dust box 40 has a dust collection port 41 and a dust collection chamber 42 communicating with the dust collection port 41, and the dust collection port 41 is provided toward the fan blade 20.

By adopting the air-conditioning indoor unit provided by the embodiment, the fan blades 20 can be effectively cleaned through the cleaning brush 30, so that dust on the fan blades 20 can be swept down. Meanwhile, the dust falling from the fan blade 20 can enter the dust collecting cavity 42 through the dust collecting port 41, so that the dust falling from the fan blade 20 is prevented from scattering to the inside of the indoor unit of the air conditioner and being discharged from the air outlet 14, and the cleanliness of the air outlet air can be better ensured to ensure the air outlet quality. Therefore, through the air conditioner indoor unit that this embodiment provided, can solve the relatively poor technical problem of air conditioner indoor unit's air-out quality among the prior art.

Specifically, an air duct 11 is provided in the indoor unit casing 10 in this embodiment, the fan blade 20 and the cleaning brush 30 are both located in the air duct 11, at least a part of the fan blade 20 is located below the cleaning brush 30, a communication port 12 is provided at the bottom of the air duct 11, the dust collecting box 40 is mounted on the indoor unit casing 10, and the dust collecting port 41 is communicated with the communication port 12. By adopting the structural layout, the cleaning brush 30 can sweep dust on the fan blades 20 better, and the dust collecting box 40 can effectively collect the swept dust, so that the quality of air outlet can be better ensured. Meanwhile, the structural layout can improve the compactness of the structural arrangement conveniently, optimize the structural layout of the indoor unit of the air conditioner and facilitate the installation of the dust collecting box 40.

In this embodiment, the bottom of the indoor unit casing 10 is provided with a first engaging structure 13, and the dust collecting box 40 is provided with a second engaging structure 43 adapted to the first engaging structure 13, so that the dust collecting box 40 can be detachably mounted on the indoor unit casing 10. By adopting the structure, the operation can be facilitated, and the convenience of the operation is improved. Specifically, first joint structure 13 in this embodiment includes the joint groove, second joint structure 43 includes that the joint is protruding, the joint groove includes transition groove section and cooperation groove section, the joint area along the extending direction transition groove section of transition groove section to cooperation groove section reduces gradually, the appearance and the protruding looks adaptation of joint of cooperation groove section, the joint area of transition groove section and the junction of joint groove section is less than the cross-sectional area of joint post, adopt such structure setting, can be convenient for improve the stability of joint, avoid dust-collecting box 40 to deviate from indoor set casing 10, and simultaneously, also conveniently carry out the dismouting.

Specifically, the bottom of the indoor unit casing 10 in this embodiment is provided with the air outlet 14, the dust collecting box 40 is arranged at an interval with the air outlet 14, the bottom of the dust collecting box 40 is provided with a digging groove 44 and a digging plate 45, and the digging plate 45 is arranged at the digging opening of the digging groove 44. Specifically, when in operation, a user can stretch into the splicing groove 44 from the splicing opening and splice the splicing plate 45 to move in a direction away from the indoor unit casing 10, so that the dust collecting box 40 falls off from the indoor unit casing 10, and the dust collecting box 40 is conveniently detached from the indoor unit casing 10, thereby better improving the convenience of operation.

In this embodiment, an air duct 11 is disposed in the indoor unit casing 10, the fan blade 20 and the cleaning brush 30 are both located in the air duct 11, the indoor unit of the air conditioner further includes a dust guard plate 50, the dust guard plate 50 is movably disposed at the bottom of the air duct 11, and the dust guard plate 50 has a dust guard position and a wind shielding position. When the dust-blocking plate 50 is located at the dust-blocking position, the dust-blocking plate 50 protrudes from the inner wall of the air duct 11; when the dust guard 50 is in the wind shielding position, at least a part of the dust guard 50 is attached to the inner wall of the wind tunnel 11. By adopting the structure, when the fan blade 20 needs to be cleaned or cleaned, the dust-blocking plate 50 is in a dust-blocking position, so that dust is blocked by the dust-blocking plate 50 and is discharged from the air outlet 14; when the indoor unit of the air conditioner is normally operated, in order to avoid the influence of the dust-blocking plate 50 on the air volume, the dust-blocking plate 50 can be moved to the wind-shielding position to normally discharge the air. The structure can not only ensure the normal operation of the indoor unit of the air conditioner, but also prevent dust from being discharged from the air outlet 14.

Specifically, the air duct 11 in this embodiment is provided with a communication port 12, the communication port 12 communicates with the dust collection port 41, and the dust guard plate 50 is movably mounted at the communication port 12. When the dust-blocking plate 50 is moved to the dust-blocking position, the dust-blocking plate 50 is retracted from the communication port 12, so that the dust enters the dust collection port 41 through the communication port 12, for better collection of the dust. When the dust guard 50 moves to the wind-shielding position, the dust guard 50 covers the communication port 12, so that the wind can be normally discharged without affecting the wind output.

In this embodiment, the indoor unit of the air conditioner further includes a dust collecting blade 60, and the dust collecting blade 60 is rotatably disposed in the dust collecting chamber 42 to provide a driving force for collecting dust through the dust collecting blade 60. By adopting the structure, the dust collecting fan blades 60 can provide driving negative pressure when rotating in the dust collecting cavity 42, and the dust can smoothly enter the dust collecting cavity 42 under the action of the driving negative pressure, so that the dust can be collected better and the dust can be prevented from scattering.

Specifically, the dust collecting box 40 in this embodiment is a strip-shaped box body, and the strip-shaped box extends along the extension direction of the indoor unit casing 10; the dust collecting blades 60 are strip-shaped blades extending in the extending direction of the dust collecting box 40. By adopting the structure, dust falling from the fan blades 20 can be collected better, so that the dust can fall into the dust collection box 40 as much as possible.

In this embodiment, when the washing brush 30 is in the escape position, the brush head of the washing brush 30 is disposed toward the bottom of the indoor unit casing 10. Specifically, the washing brush 30 according to the present embodiment is disposed near the evaporator 70, and with such a configuration, it is possible to prevent the condenser on the evaporator 70 from dripping on the washing brush 30 and affecting the service life of the washing brush 30, thereby facilitating better protection of the washing brush 30.

Specifically, the cleaning brush 30 in this embodiment includes a driving motor 80, a main body 31, and a brush 32, where the main body 31 is provided with a mounting groove, the brush 32 is mounted in the mounting groove, and at least a portion of the brush 32 protrudes from the mounting groove to form a brush head of the cleaning brush 30. The main body 31 is connected with the driving motor 80 to drive the main body 31 to rotate through the driving motor 80, so as to automatically clean the fan blades 20. Meanwhile, the fan blades 20 can be cleaned better due to the structural arrangement.

In this embodiment, the air duct 11 is provided in the indoor unit casing 10, and when the brush 30 is in the retracted position, the main body portion 31 of the brush 30 is attached to at least part of the air duct 11, and the brush head of the brush 30 is disposed obliquely downward. With the above structure, when the indoor unit of the air conditioner is in normal operation, the influence of the cleaning brush 30 on the air volume in the air duct 11 can be avoided, and meanwhile, the condensed water on the evaporator 70 can be prevented from flowing onto the cleaning brush 30.

Specifically, the cleaning brush 30 in this embodiment is located at the top of the air duct 11, and functions that the cleaning brush 30 is a part of the air duct 11 when not in use, and does not affect the operation of the air outlet system. When the indoor unit of the air conditioner enters the cleaning mode, the cleaning brush 30 rotates to a position contacting with the fan blade 20 by the rotation of the driving motor 80, and the dust attached to the fan blade 20 falls down by the rotation of the fan blade 20. The washing brush 30 is not operated downward, and the condensed water generated from the evaporator 70 during the air conditioning operation is prevented from dropping to the brush 32 of the washing brush 30, thereby preventing the life of the washing brush 30 from being affected. The washing brush 30 is mounted on a bottom case (a bottom case for mounting on a wall) of the indoor unit housing 10, and the washing brush 30 is rotated by rotation provided by the driving motor 80. The dust guard plate 50 is used for blocking dust falling from the fan blades 20 and preventing the dust from blowing out of the air-conditioning indoor unit to pollute outside air, and the dust guard plate 50 is installed on a panel body of the indoor unit shell 10 and is controlled to be opened and closed through the transmission of the driving motor 80. The dust collecting fan blade 60 is added on the dust collecting box 40, the dust collecting fan blade 60 is driven by the motor, the dust collecting fan blade 60 rotates to generate negative pressure, so that dust directly enters the dust collecting box 40, and air pollution outside the air conditioner is prevented. There are buckle joint board and buckle joint recess on the dust collection box 40, and the user can conveniently take out dust collection box 40 through the hand of digging that the fishplate bar 45 formed and be used for wasing, and dust collection box 40 assembles with the panel body through the mode of joint, and convenience of customers gets and installs.

The structure of the cleaning fan blade 20 comprises two parts, wherein the first part is a cleaning fan blade 20 area, and the second part is a dust collecting area. The cleaning fan blade 20 area is composed of a cleaning brush 30, a bottom shell and a fan blade 20, the cleaning brush 30 is driven by a driving motor 80 to be installed at the top of the air duct 11 of the bottom shell, and the cleaning brush 30 is used for being a part of the air duct 11 when not used, so that the operation of the air duct 11 system is not influenced. The brush 32 of the washing brush 30 is positioned downward when the washing brush 30 is not used, and functions to prevent condensed water generated from the evaporator 70 during operation of the indoor unit of the air conditioner from dropping to the brush 32 of the washing brush 30, thereby affecting the life of the washing brush 30. The second part is a dust collecting area which is composed of a dust baffle plate 50, a dust collecting box 40, dust collecting fan blades 60 and the like. The dust baffle is driven by a transmission motor to be installed on the panel body, and the dust baffle 50 is rotated by a rotating motor to realize an opening state and a closing state, and has the function of blocking dust when collecting the dust so as to prevent the dust from blowing out of the air conditioner indoor unit and polluting outside air. The dust collecting fan blade 60 is arranged in the dust collecting box 40, the dust collecting fan blade 60 is arranged on the dust collecting box 40 through a motor, and the dust collecting fan blade 60 is required to be arranged in the middle of the dust collecting box 40 to prevent the dust collecting fan blade 60 from contacting with the dust collecting box 40 to generate resonance abnormal sound when rotating. The dust collecting box 40 is provided with the digging and connecting plate 45, a user can conveniently take out the box through the digging and connecting plate 45 to assemble the dust collecting box 40, and the dust collecting box 40 and the panel body are convenient for the user to fix the dust collecting box 40 and take out the dust collecting box 40 through the matching mode of clamping. When in operation, the cleaning brush 30 is driven by the motor to rotate to a position where the cleaning brush contacts with the dust collecting fan blades 60, and the dust collecting fan blades 60 throw away the dust supported on the fan blades 20 by rotation and fall on the air duct 11 of the bottom shell. The dust baffle 50 is driven by the transmission motor to rotate to the open position so that dust cannot be blown to the outside of the air conditioner, the fan blades 20 in the dust collection box 40 are driven by the motor to generate negative pressure in the dust collection box 40, and the dust enters the dust collection box 40 under the action of the negative pressure. The user may remove the dust box 40 for cleaning by a catch on the dust box 40.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the fan blades 20 are automatically cleaned and dust is recovered, so that the indoor unit of the air conditioner is intelligently cleaned better, and the product competitiveness is improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

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

the air conditioner comprises an indoor unit shell (10) and fan blades (20), wherein the fan blades (20) are rotatably arranged in the indoor unit shell (10);

the cleaning brush (30) is movably arranged in the indoor unit shell (10), and the cleaning brush (30) is provided with a cleaning position and an avoiding position; when the cleaning brush (30) is in the cleaning position, the brush head of the cleaning brush (30) is in contact with the fan blade (20); when the cleaning brush (30) is located at the avoiding position, the brush head of the cleaning brush (30) and the fan blade (20) are arranged at intervals;

the fan blade assembly comprises a dust collection box (40), wherein the dust collection box (40) is provided with a dust collection opening (41) and a dust collection cavity (42) communicated with the dust collection opening (41), and the dust collection opening (41) is arranged towards the fan blade (20).

2. Indoor unit of air conditioner according to claim 1, characterized in that an air duct (11) is arranged in the indoor unit casing (10), the fan blade (20) and the cleaning brush (30) are both located in the air duct (11), at least part of the fan blade (20) is located below the cleaning brush (30), a communication port (12) is arranged at the bottom of the air duct (11), the dust collecting box (40) is mounted on the indoor unit casing (10), and the dust collecting port (41) is communicated with the communication port (12).

3. Indoor unit of air conditioner according to claim 1, characterized in that the bottom of the indoor unit casing (10) is provided with a first snap structure (13), and the dust collecting box (40) is provided with a second snap structure (43) adapted to the first snap structure (13) so that the dust collecting box (40) can be detachably mounted on the indoor unit casing (10).

4. An indoor unit of an air conditioner as claimed in claim 1, wherein the bottom of the indoor unit casing (10) is provided with an air outlet (14), the dust collecting box (40) is arranged at a distance from the air outlet (14), the bottom of the dust collecting box (40) is provided with a digging and connecting groove (44) and a digging and connecting plate (45), and the digging and connecting plate (45) is arranged at the digging and connecting opening of the digging and connecting groove (44).

5. Indoor unit of air conditioning according to claim 1, characterized in that an air duct (11) is provided in the indoor unit casing (10), the fan blade (20) and the cleaning brush (30) being both located in the air duct (11), the indoor unit further comprising:

the dust baffle plate (50) is movably arranged at the bottom of the air duct (11), and the dust baffle plate (50) is provided with a dust baffle position and a wind shielding position; when the dust blocking plate (50) is located at the dust blocking position, the dust blocking plate (50) protrudes out of the inner wall of the air duct (11); when the dust baffle plate (50) is located at the wind shielding position, at least part of the dust baffle plate (50) is attached to the inner wall of the air duct (11).

6. An indoor unit of an air conditioner according to claim 5, wherein the air duct (11) is provided with a communication port (12), the communication port (12) is communicated with the dust collection port (41), and the dust guard plate (50) is movably installed at the communication port (12); when the dust blocking plate (50) moves to the dust blocking position, the dust blocking plate (50) avoids the communication opening (12) so that dust enters the dust collecting opening (41) through the communication opening (12); when the dust guard plate (50) moves to the wind-sheltering position, the dust guard plate (50) covers the communication port (12).

7. An indoor unit of an air conditioner according to claim 1, further comprising:

the dust collection fan blade (60) is rotatably arranged in the dust collection cavity (42) to provide driving force for collecting dust through the dust collection fan blade (60).

8. Indoor unit of air-conditioning according to claim 7, characterized in that the dust box (40) is a strip box extending in the extension direction of the indoor unit casing (10); the dust collection fan blades (60) are strip-shaped fan blades, and the strip-shaped fan blades extend along the extension direction of the dust collection box (40).

9. Indoor unit of air conditioning according to claim 1, characterized in that the brush head of the washing brush (30) is arranged towards the bottom of the indoor unit casing (10) when the washing brush (30) is in the escape position.

10. An indoor unit of an air conditioner according to claim 1, wherein the washing brush (30) includes a main body part (31) and a brush (32), a mounting groove is provided on the main body part (31), the brush (32) is mounted in the mounting groove, and at least a part of the brush (32) is provided to protrude from the mounting groove to form a brush head of the washing brush (30).

11. Indoor unit of air conditioning according to claim 10, characterized in that an air duct (11) is provided in the indoor unit casing (10), and when the washing brush (30) is in the escape position, the main body part (31) of the washing brush (30) is attached to at least part of the air duct (11), and the brush head of the washing brush (30) is disposed obliquely downward.