Indoor unit of air conditioner

Abstract

The utility model relates to an indoor unit of an air conditioner, which belongs to the technical field of air conditioning equipment and comprises a shell, an indoor heat exchanger, an indoor fan, a filter screen, a brush roller, a driving roller brush and a cleaning comb, the cleaning comb comprises a base, a first comb tooth group and a second comb tooth group, and the first comb tooth group and the second comb tooth group are connected to the base. The first comb tooth set is arranged on the peripheral side of the brush roller and used for cleaning the brush roller, the second comb tooth set is arranged on the peripheral side of the driving roller brush and used for cleaning the driving roller brush, when the brush roller rotates to clean the filter screen, comb teeth of the first comb tooth set on the cleaning comb make contact with bristles, and the comb teeth can conduct combing type cleaning in the reverse rotating direction on the bristles. When the roller brush is driven to rotate, comb teeth of the second comb tooth set on the sweeping comb make contact with the bristles, and the comb teeth can conduct scraping and sweeping type cleaning on the bristles in the rotating direction. Therefore, the cleaning effect on the cleaning brush is improved, dust accumulated on the brush roller and the driving roller brush is reduced, and the cleaning effect on the filter screen is improved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning equipment, and more particularly to an indoor air conditioning unit. Background Technology

[0002] An air conditioner, also known as an air conditioning unit, is a device that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow within a building or structure. To meet the needs of daily life, some air conditioners have a fresh air function, which can transfer outdoor air into the room.

[0003] Air conditioners typically contain filters to purify the air. If these filters aren't cleaned regularly, they accumulate dust and bacteria, which not only affects the air conditioner's efficiency and increases energy consumption, but can also negatively impact human health, such as causing respiratory illnesses. This is especially true for wall-mounted air conditioners, which are inconvenient to clean because they are suspended from the wall. Therefore, current technology often incorporates a cleaning module inside the wall-mounted air conditioner for automatic filter cleaning.

[0004] In existing technologies, brushes are typically used to clean filters, and the filter is moved by the friction between the rotating drive roller and the filter. However, after prolonged cleaning operation, dust accumulates on both the brushes and the drive roller. Once the dust reaches a certain level, it affects the cleaning effect on the filter. Utility Model Content

[0005] This utility model solves, to at least a certain extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide an air conditioner indoor unit in which, when the brush roller cleans the filter, a cleaning comb removes dust from the brush roller and drive roller. When the brush roller rotates to clean the filter, the teeth of the first comb group on the cleaning comb contact the bristles, separating them. The comb teeth perform a combing-like cleaning action against the direction of rotation. When the drive roller rotates, the teeth of the second comb group on the cleaning comb contact the bristles, separating them. The comb teeth perform a scraping-like cleaning action in the direction of rotation. This improves the cleaning effect on the brush roller, thereby reducing dust accumulation on the brush roller and drive roller, and enhancing the cleaning effect on the filter.

[0007] To achieve the above objectives, this utility model provides an indoor air conditioning unit, which includes:

[0008] The casing has an air conditioning inlet at the top;

[0009] An indoor heat exchanger is disposed inside the housing;

[0010] An indoor fan is disposed inside the housing; the indoor fan causes airflow to enter the housing through the air conditioning inlet, and after heat exchange via the indoor heat exchanger, it is delivered to the room;

[0011] A filter screen is movably connected to the housing corresponding to the air conditioning inlet;

[0012] A brush roller, disposed below the filter screen, is used to clean the filter screen;

[0013] A drive roller brush is disposed below the filter screen and adjacent to the brush roller. The bristles of the drive roller brush abut against the filter screen, and the filter screen is moved when the drive roller brush rotates.

[0014] A cleaning comb, used for cleaning the brush roller and drive roller brush, includes:

[0015] A base is disposed below the axis of the brush roller and the drive brush roller;

[0016] A first comb tooth group is connected to the base and located on the side of the brush roller away from the drive brush. The first comb tooth group has a plurality of comb teeth arranged along the length direction of the brush roller. The ends of the comb teeth of the first comb tooth group extend into the bristles of the brush roller. When the brush roller rotates to clean the filter screen, the first comb tooth group combs the brush roller.

[0017] The second comb tooth group is connected to the base and is located on the side adjacent to the drive roller brush and the brush roller. The second comb tooth group has a plurality of comb teeth arranged along the length direction of the drive roller brush. The ends of the comb teeth of the second comb tooth group extend into the bristles of the drive roller brush. When the drive roller brush rotates and drives the filter screen to move, the second comb tooth group scrapes the drive roller brush.

[0018] In this technical solution, when the brush roller cleans the filter screen, a cleaning comb removes dust from the brush roller and drive roller. When the brush roller rotates to clean the filter screen, the teeth of the first comb group on the cleaning comb contact the bristles, separating them. The comb teeth perform a scraping-like cleaning action in the direction of rotation. When the drive roller rotates, the teeth of the second comb group on the cleaning comb contact the bristles, separating them. The comb teeth perform a combing-like cleaning action in the opposite direction of rotation. This improves the cleaning effect on the brush, thereby reducing dust accumulation on the brush roller and drive roller, and enhancing the cleaning effect on the filter screen.

[0019] In some embodiments of this application, the number of the first comb teeth group is greater than the number of the second comb teeth group.

[0020] In the technical solution, since the brush roller has already cleaned the filter screen when the drive roller brush drives the filter screen, there is less dust on the filter screen, and consequently less dust on the drive roller brush. At the same time, since the drive roller brush uses hard bristles with low density, the comb tooth density of the cleaning drive roller brush is lower than that of the brush roller.

[0021] In some embodiments of this application, the ratio of the number of comb teeth n1 in the first comb group to the number of comb teeth n2 in the second comb group is 1≤n1 / n2≤4.

[0022] In the technical solution, the number of comb teeth on the two sets of combs can be the same, or the number of comb teeth on the cleaning brush roller can be four times the number of comb teeth on the cleaning drive roller brush, so that the comb tooth density of the cleaning brush roller is greater than the comb tooth density of the cleaning drive roller brush, and the brush roller and drive roller brush are cleaned in a targeted manner respectively.

[0023] In some embodiments of this application, the end cross-sectional area of ​​the comb teeth in the first comb group is smaller than the root cross-sectional area, and the end cross-sectional area of ​​the comb teeth in the second comb group is smaller than the root cross-sectional area.

[0024] In the technical solution, the comb teeth of the first and second comb groups are designed with pointed teeth. When the bristles come into contact with the comb, as the bristles move towards the comb, the longitudinal cross-section of the comb gradually increases, and the bristles are gradually separated by the comb. This improves the separation effect of the comb on the bristles, thereby improving the cleaning effect of the comb on the roots of the cleaning brush.

[0025] In some embodiments of this application, the comb teeth of the first comb group and the comb teeth of the second comb group are both inclined teeth with opposite inclination directions.

[0026] In the technical solution, the comb teeth are designed as inclined teeth, with their tips extending into the bristles, making them at a small angle to the bristles. This allows for better manipulation and separation of the bristles for cleaning, and also reduces their length, thus minimizing space occupation.

[0027] In some embodiments of this application, the air conditioner indoor unit further includes:

[0028] A fixed frame is disposed below the filter screen, and the brush roller, drive roller brush and cleaning comb are disposed within the fixed frame;

[0029] A drive assembly is disposed on the outside of the fixed frame and connected to the ends of the brush roller and the drive roller. The drive assembly drives the brush roller and the drive roller to rotate in opposite directions.

[0030] In the technical solution, the brush roller, drive roller brush and cleaning comb are installed by a fixed frame. The cleaning comb is completely located in the fixed frame, and the dust swept by the brush roller and the dust cleaned by the cleaning comb are both confined in the fixed frame and fall down.

[0031] In some embodiments of this application, the side plate of the fixed frame adjacent to the drive roller brush has an inclined surface that approaches downwards from the brush roller.

[0032] In the technical solution, the side plate of the fixed frame near the drive roller brush is set as an inclined plate. The dust cleaned by the cleaning comb from the drive roller brush is collected along the inclined plate of the fixed frame and the dust falling from the brush roller, which can reduce the space occupied by the fixed frame.

[0033] In some embodiments of this application, the air conditioner indoor unit further includes:

[0034] The dust collection box, located below the fixed frame, is used to collect dust and other foreign objects cleaned by the brush roller and the cleaning comb.

[0035] In the technical solution, a dust collection box is installed under the fixed frame of the air conditioner indoor unit to collect dust.

[0036] In some embodiments of this application, the base is a square frame with a hollow center.

[0037] In the technical solution, the base is hollowed out in the middle to prevent dust from accumulating on the base. Specifically, the base can be set as a grid-like square.

[0038] In addition, this application also provides an air conditioner indoor unit, including:

[0039] The casing has an air conditioning inlet at the top;

[0040] An indoor heat exchanger is disposed inside the housing;

[0041] An indoor fan is disposed inside the housing; the indoor fan causes airflow to enter the housing through the air conditioning inlet, and after heat exchange via the indoor heat exchanger, it is delivered to the room;

[0042] A filter screen is movably connected to the housing corresponding to the air conditioning inlet;

[0043] A brush roller, disposed below the filter screen, is used to clean the filter screen;

[0044] A drive roller brush is disposed below the filter screen and adjacent to the brush roller. The bristles of the drive roller brush abut against the filter screen, and the filter screen is moved when the drive roller brush rotates.

[0045] A cleaning comb, used for cleaning the brush roller and drive roller brush, includes:

[0046] A base is disposed below the axis of the brush roller and the drive roller, and is located between the brush roller and the drive roller.

[0047] The first comb tooth group is connected to the base and is located on the side adjacent to the brush roller and the drive roller brush. The first comb tooth group has a plurality of comb teeth arranged along the length direction of the brush roller. The ends of the comb teeth of the first comb tooth group extend into the bristles of the brush roller. When the brush roller rotates to clean the filter screen, the first comb tooth group scrapes the brush roller.

[0048] The second comb tooth group is connected to the base and is located on the side adjacent to the drive roller brush and the brush roller. The second comb tooth group has a plurality of comb teeth arranged along the length direction of the drive roller brush. The ends of the comb teeth of the second comb tooth group extend into the bristles of the drive roller brush. When the drive roller brush rotates and drives the filter screen to move, the second comb tooth group scrapes the drive roller brush.

[0049] In this technical solution, when the brush roller cleans the filter screen, a cleaning comb removes dust from both the brush roller and the drive roller. As the brush roller rotates to clean the filter screen, the first set of comb teeth on the cleaning comb contacts the bristles, separating them. The comb teeth perform a scraping clean in the direction of rotation. When the drive roller rotates, the second set of comb teeth on the cleaning comb contacts the bristles, separating them. The comb teeth perform a combing clean in the opposite direction of rotation. This improves the cleaning effect on the brush roller, thereby reducing dust accumulation on the brush roller and drive roller, and enhancing the cleaning effect on the filter screen. Furthermore, both sets of comb teeth are located between the brush roller and the drive roller, resulting in a smaller cleaning comb size and reduced space occupation.

[0050] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of this application;

[0052] Figure 2 This is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of this application;

[0053] Figure 3 This is a schematic diagram of the structure of removing the dust collection box of the indoor unit of an air conditioner according to an embodiment of this application;

[0054] Figure 4 This is a schematic diagram of the overall structure of the self-cleaning device of the indoor unit of an air conditioner according to an embodiment of this application;

[0055] Figure 5 This is a schematic diagram of the internal structure of the self-cleaning device of an air conditioner indoor unit according to an embodiment of this application;

[0056] Figure 6 This is an enlarged schematic diagram of part A of the internal structure of the self-cleaning device of the indoor unit of an air conditioner according to an embodiment of this application;

[0057] Figure 7 This is a schematic diagram of the cleaning comb operation of an air conditioner indoor unit according to an embodiment of this application;

[0058] Figure 8 This is a three-dimensional structural schematic diagram of the cleaning comb of an air conditioner indoor unit according to an embodiment of this application;

[0059] Figure 9 This is a schematic diagram of the top surface structure of the cleaning comb of an air conditioner indoor unit according to an embodiment of this application;

[0060] Figure 10 This is a longitudinal cross-sectional structural diagram of the cleaning comb of an air conditioner indoor unit according to an embodiment of this application;

[0061] Figure 11 This is a schematic diagram of the internal structure of a self-cleaning device for an air conditioner indoor unit according to an embodiment of this application;

[0062] Figure 12 This is a three-dimensional structural diagram of the cleaning comb of a self-cleaning device for an air conditioner indoor unit according to an embodiment of this application;

[0063] Figure 13 This is a schematic diagram of the top surface structure of the cleaning comb of another self-cleaning device for an air conditioner indoor unit according to an embodiment of this application;

[0064] Figure 14 This is a longitudinal cross-sectional structural diagram of the cleaning comb of a self-cleaning device for another air conditioner indoor unit according to an embodiment of this application.

[0065] In the above figures: 100, housing; 110, air conditioning inlet; 120, pull-out opening; 200, filter screen; 300, brush roller; 400, drive roller brush; 500, cleaning comb; 510, base; 520, first comb tooth group; 530, second comb tooth group; 540, comb teeth; 600, fixing frame; 700, dust collection box. Detailed Implementation

[0066] In the description of this 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0067] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0071] In this application, the indoor unit of the air conditioner includes a casing, an indoor heat exchanger, and an indoor fan. The indoor heat exchanger and the indoor fan are disposed inside the casing. Indoor air enters the casing and comes into contact with the indoor heat exchanger. After heat exchange between the indoor heat exchanger and the air, the heat-exchanged air is output to the room under the action of the indoor fan, thereby achieving the regulation of the indoor temperature.

[0072] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0073] As attached Figures 1 to 10 As shown in an illustrative embodiment of the indoor unit of this utility model, the indoor unit includes a housing 100. An air inlet 110 is provided at the top of the housing 100. A support grille assembly is provided at the air inlet in the housing 100.

[0074] In some embodiments, the indoor unit of the air conditioner further includes an indoor heat exchanger. The indoor heat exchanger is disposed inside the housing 100, and there is a certain space between the two ends of the indoor heat exchanger and the two sides of the housing 100. The self-cleaning device of the indoor unit utilizes the space on the side of the indoor heat exchanger and is partially disposed on the side of the indoor heat exchanger.

[0075] In some embodiments, the indoor unit of the air conditioner also includes an indoor fan. The indoor fan is disposed inside the housing 100, and the indoor fan causes airflow to enter the housing 100 through the air conditioner air inlet 110, and after heat exchange by the indoor heat exchanger, it is introduced into the room.

[0076] In some embodiments, the indoor unit of the air conditioner also includes a filter 200. The filter 200 is an annular strip and is disposed within the housing 100 corresponding to the air inlet 110 via a support grille assembly. The filter 200 moves around within the support grille assembly.

[0077] like Figure 5 As shown, in some embodiments, the indoor unit of the air conditioner also includes a brush roller 300. The brush roller 300 is disposed below the filter 200 for cleaning the filter 200, and the bristles thereon are relatively long and soft.

[0078] In some embodiments, the indoor unit of the air conditioner also includes a drive roller brush 400. The drive roller brush 400 is disposed below the filter screen 200 and adjacent to the brush roller 300. The bristles of the drive roller brush 400 are short and stiff, and the bristles abut against the filter screen 200. When the drive roller brush 400 rotates, it drives the filter screen 200 to move.

[0079] like Figures 5 to 7As shown, in some embodiments, the indoor unit of the air conditioner also includes a cleaning comb 500. The cleaning comb 500 is used to clean the brush roller 300 and the drive roller brush 400. The cleaning comb 500 includes a base 510, a first comb tooth group 520, and a second comb tooth group 530. The base 510 is disposed below the axis of the brush roller 300 and the drive roller brush 400. The first comb tooth group 520 and the second comb tooth group 530 are both connected to the base 510 and clean the brush roller 300 and the drive roller brush 400 respectively.

[0080] like Figures 8 to 10 As shown, in some embodiments, the first comb tooth assembly 520 is connected to the base 510 and located on the side of the brush roller 300 away from the drive brush 400. The first comb tooth assembly 520 has a plurality of comb teeth 540 evenly arranged along the length direction of the brush roller 300, and the ends of the comb teeth 540 of the first comb tooth assembly 520 extend into the bristles of the brush roller 300. When the brush roller 300 rotates to clean the filter screen 200, the first comb tooth assembly 520 combs the brush roller 300 in the reverse direction of rotation.

[0081] In some embodiments, the second comb tooth assembly 530 is connected to the base 510 and located on the side adjacent to the drive roller brush 400 and the brush roller 300. The second comb tooth assembly 530 has a plurality of comb teeth 540 evenly arranged along the length direction of the drive roller brush 400, and the ends of the comb teeth 540 of the second comb tooth assembly 530 extend into the bristles of the drive roller brush 400. When the drive roller brush 400 rotates and drives the filter screen 200 to move, the second comb tooth assembly 530 scrapes the drive roller brush 400 in the reverse direction of rotation.

[0082] Through the above scheme, when the brush roller 300 cleans the filter screen 200, the cleaning comb 500 cleans the dust on the brush roller 300 and the drive roller brush 400. When the brush roller 300 rotates to clean the filter screen 200, the comb teeth 540 of the first comb tooth group 520 on the cleaning comb 500 contact the bristles, separating the bristles. The comb teeth 540 can perform a scraping cleaning of the bristles in the direction of rotation. When the drive roller brush 400 rotates, the comb teeth 540 of the second comb tooth group 530 on the cleaning comb 500 contact the bristles, separating the bristles. The comb teeth 540 can perform a combing cleaning of the bristles in the opposite direction of rotation. This improves the cleaning effect on the brush, thereby reducing the dust accumulation on the brush roller 300 and the drive roller brush 400, and improving the cleaning effect on the filter screen 200.

[0083] In some embodiments, the number of first comb tooth groups 520 is greater than the number of second comb tooth groups 530. That is, the comb tooth density of the cleaning drive roller brush 400 is lower than the comb tooth density of the brush roller 300. Since the brush roller 300 has already cleaned the filter screen 200 when the drive roller brush 400 drives the filter screen 200, there is more dust accumulated on the brush and less dust on the filter screen 200, resulting in less dust adhering to the drive roller brush 400. At the same time, since the bristle density of the drive roller brush 400 is small, the density of the second comb tooth group 530 used for cleaning the drive roller brush 400 is less than the density of the first comb tooth group 520 used for cleaning the brush roller 300.

[0084] In some embodiments, the ratio of the number n1 of the first comb tooth group 520 to the number n2 of the second comb tooth group 530 is 1 ≤ n1 / n2 ≤ 4. The number n1 and n2 of the two sets of comb teeth 540 on the cleaning comb 500 may be the same, or the number n1 of the comb teeth of the cleaning brush roller 300 may be four times the number n2 of the comb teeth of the cleaning drive roller brush 400.

[0085] like Figure 10 As shown, in some embodiments, the teeth of the first comb group 520 and the teeth of the second comb group 530 both have a smaller end cross-sectional area than the root cross-sectional area. That is, the comb teeth 540 are designed as pointed teeth. Because the longitudinal cross-section of the comb 540 gradually increases, the bristles are gradually separated by the comb, which can improve the cleaning effect.

[0086] In some embodiments, the comb teeth 540 of the first comb tooth group 520 and the comb teeth 530 are both inclined teeth with opposite inclination directions. The tips of the comb teeth 540 extend into the bristles, making them form a small angle with the bristles, which can better move and separate the bristles for cleaning, and can also make them shorter, reducing space occupation.

[0087] like Figure 5 As shown, in some embodiments, the indoor unit of the air conditioner also includes a fixed frame 600. The fixed frame 600 is disposed below the filter 200, and a brush roller 300, a drive roller brush 400, and a cleaning comb 500 are disposed within the fixed frame 600. The fixed frame 600 has four side plates connected in sequence to form a cylindrical shape. The cleaning comb 500 is completely located within the fixed frame 600, and the dust swept by the brush roller 300 and the dust removed by the cleaning comb 500 are both confined within the fixed frame 600 and fall off.

[0088] like Figure 4 As shown, in some embodiments, the indoor unit of the air conditioner also includes a drive assembly. The drive assembly is disposed on the outside of the fixed frame 600 and connected to the ends of the brush roller 300 and the drive roller brush 400. The drive assembly drives the brush roller 300 and the drive roller brush 400 to rotate in opposite directions.

[0089] In some embodiments, the side plate of the fixed frame 600 adjacent to the drive roller brush 400 has an inclined surface with its bottom end approaching the opposite side. The side plate of the fixed frame 600 near the drive roller brush 400 is configured as an inclined plate, and the dust cleaned by the cleaning comb 500 from the drive roller brush 400 collects along the inclined plate of the fixed frame 600 and the dust falling from the brush roller 300.

[0090] like Figure 2 as well as Figure 3 As shown, in some embodiments, the indoor unit of the air conditioner also includes a dust collection box 700. The dust collection box 700 is located below the fixed frame 600 and is used to collect dust and other foreign objects cleaned by the brush roller 300 and the cleaning comb 500. The opening of the dust collection box 700 corresponds to the lower port of the fixed frame 600. A pull-out opening 120 is provided on the front side of the housing 100 corresponding to the dust collection box 700. By opening the front panel of the housing 100, the dust collection box 700 can be pulled out from the housing 100 along the pull-out opening 120 for emptying the dust.

[0091] like Figure 9 As shown, in some embodiments, the base 510 is a square frame with a hollow center. Specifically, the base 510 can be configured as a grid-like square frame. Dust scattered during cleaning can fall through the hollow areas, preventing dust accumulation.

[0092] In addition, this application also provides an indoor air conditioning unit.

[0093] like Figures 11 to 14 As shown, the indoor unit of the air conditioner includes a housing 100. An air conditioning air inlet 110 is provided on the top of the housing 100. A support grille assembly is provided at the air inlet in the housing 100.

[0094] In some embodiments, the indoor unit of the air conditioner further includes an indoor heat exchanger. The indoor heat exchanger is disposed inside the housing 100, and there is a certain space between the two ends of the indoor heat exchanger and the two sides of the housing 100. The self-cleaning device of the indoor unit utilizes the space on the side of the indoor heat exchanger and is partially disposed on the side of the indoor heat exchanger.

[0095] In some embodiments, the indoor unit of the air conditioner also includes an indoor fan. The indoor fan is disposed inside the housing 100, and the indoor fan causes airflow to enter the housing 100 through the air conditioner air inlet 110, and after heat exchange by the indoor heat exchanger, it is introduced into the room.

[0096] In some embodiments, the indoor unit of the air conditioner also includes a filter 200. The filter 200 is an annular strip and is disposed within the housing 100 corresponding to the air inlet 110 via a support grille assembly. The filter 200 moves around within the support grille assembly.

[0097] In some embodiments, the indoor unit of the air conditioner also includes a brush roller 300. The brush roller 300 is disposed below the filter 200 for cleaning the filter 200, and the bristles thereon are relatively long and soft.

[0098] In some embodiments, the indoor unit of the air conditioner also includes a drive roller brush 400. The drive roller brush 400 is disposed below the filter screen 200 and adjacent to the brush roller 300. The bristles of the drive roller brush 400 are short and stiff, and the bristles abut against the filter screen 200. When the drive roller brush 400 rotates, it drives the filter screen 200 to move.

[0099] In some embodiments, the indoor unit of the air conditioner further includes a cleaning comb 500. The cleaning comb 500 is used to clean the brush roller 300 and the drive roller brush 400. The cleaning comb 500 includes a base 510, a first comb tooth group 520, and a second comb tooth group 530. The base 510 is disposed below the axis of the brush roller 300 and the drive roller brush 400. The first comb tooth group 520 and the second comb tooth group 530 are both connected to the base 510 and clean the brush roller 300 and the drive roller brush 400 respectively.

[0100] In some embodiments, the first comb tooth group 520 is connected to the base 510 and is located on the side adjacent to the brush roller 300 and the drive roller brush 400. The first comb tooth group 520 has a plurality of comb teeth 540 evenly arranged along the length direction of the brush roller 300. The ends of the comb teeth 540 of the first comb tooth group 520 extend into the bristles of the brush roller 300. When the brush roller 300 rotates to clean the filter screen 200, the first comb tooth group 520 scrapes the brush roller 300.

[0101] In some embodiments, the second comb tooth group 530 is connected to the base 510 and is located on the side adjacent to the drive roller brush 400 and the brush roller 300. The second comb tooth group 530 has a plurality of comb teeth 540 evenly arranged along the length direction of the drive roller brush 400. The ends of the comb teeth 540 of the second comb tooth group 530 extend into the bristles of the drive roller brush 400. When the drive roller brush 400 rotates and drives the filter screen 200 to move, the second comb tooth group 530 scrapes the drive roller brush 400.

[0102] Through the above scheme, when the brush roller 300 cleans the filter screen 200, the cleaning comb 500 cleans the dust on the brush roller 300 and the drive roller brush 400. When the brush roller 300 rotates to clean the filter screen 200, the comb teeth 540 of the first comb tooth group 520 on the cleaning comb 500 contact the bristles, separating the bristles. The comb teeth 540 can perform a scraping cleaning of the bristles in the direction of rotation. When the drive roller brush 400 rotates, the comb teeth 540 of the second comb tooth group 530 on the cleaning comb 500 contact the bristles, separating the bristles. The comb teeth 540 can perform a combing cleaning of the bristles in the opposite direction of rotation. This improves the cleaning effect on the brush, thereby reducing the dust accumulation on the brush roller 300 and the drive roller brush 400, and improving the cleaning effect on the filter screen 200. Furthermore, both sets of comb teeth 540 are located between the brush roller 300 and the drive roller brush 400, which makes the size of the cleaning comb 500 smaller and reduces space occupation.

[0103] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An indoor unit for an air conditioner, characterized in that, It includes: The casing has an air conditioning inlet at the top; An indoor heat exchanger is disposed inside the housing; An indoor fan is disposed inside the housing; the indoor fan causes airflow to enter the housing through the air conditioner inlet, and after heat exchange via the indoor heat exchanger, it is delivered to the room; A filter screen is movably connected to the housing corresponding to the air conditioning inlet; A brush roller, disposed below the filter screen, is used to clean the filter screen; A drive roller brush is disposed below the filter screen and adjacent to the brush roller. The bristles of the drive roller brush abut against the filter screen, and the filter screen is moved when the drive roller brush rotates. A cleaning comb, used for cleaning the brush roller and drive roller brush, includes: A base is disposed below the axis of the brush roller and the drive brush roller; A first comb tooth group is connected to the base and located on the side of the brush roller away from the drive brush. The first comb tooth group has a plurality of comb teeth arranged along the length direction of the brush roller. The ends of the comb teeth of the first comb tooth group extend into the bristles of the brush roller. When the brush roller rotates to clean the filter screen, the first comb tooth group combs the brush roller. The second comb tooth group is connected to the base and located on the side adjacent to the drive roller brush and the brush roller. The second comb tooth group has a plurality of comb teeth arranged along the length direction of the drive roller brush. The ends of the comb teeth of the second comb tooth group extend into the bristles of the drive roller brush. When the drive roller brush rotates and drives the filter screen to move, the second comb tooth group scrapes the drive roller brush.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The number of teeth in the first comb group is greater than the number of teeth in the second comb group.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The ratio of the number of comb teeth n1 in the first comb group to the number of comb teeth n2 in the second comb group is 1≤n1 / n2≤4.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, The end cross-sectional area of ​​the comb teeth in the first comb group is smaller than the root cross-sectional area, and the end cross-sectional area of ​​the comb teeth in the second comb group is smaller than the root cross-sectional area.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The comb teeth of the first comb group and the comb teeth of the second comb group are both inclined teeth with opposite inclination directions.

6. The indoor unit of the air conditioner according to claim 1, characterized in that, Also includes: A fixed frame is disposed below the filter screen, and the brush roller, the drive roller brush and the cleaning comb are connected to the fixed frame. A drive assembly is disposed on the outside of the fixed frame and connected to the ends of the brush roller and the drive roller. The drive assembly drives the brush roller and the drive roller to rotate in opposite directions.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The side plate of the fixed frame adjacent to the drive roller brush has an inclined surface that moves towards the underside of the brush roller.

8. The indoor unit of the air conditioner according to claim 6, characterized in that, Also includes: The dust collection box, located below the fixed frame, is used to collect dust and other foreign objects cleaned by the brush roller and the cleaning comb.

9. The indoor unit of the air conditioner according to claim 1, characterized in that, The base is a square frame with a hollow center.

10. An indoor unit for an air conditioner, characterized in that, include: The casing has an air conditioning inlet at the top; An indoor heat exchanger is disposed inside the housing; An indoor fan is disposed inside the housing; the indoor fan causes airflow to enter the housing through the air conditioner inlet, and after heat exchange via the indoor heat exchanger, it is delivered to the room; A filter screen is movably connected to the housing corresponding to the air conditioning inlet; A brush roller, disposed below the filter screen, is used to clean the filter screen; A drive roller brush is disposed below the filter screen and adjacent to the brush roller. The bristles of the drive roller brush abut against the filter screen, and the filter screen is moved when the drive roller brush rotates. A cleaning comb, used for cleaning the brush roller and drive roller brush, includes: A base is disposed below the axis of the brush roller and the drive roller, and is located between the brush roller and the drive roller. The first comb tooth group is connected to the base and located on the side adjacent to the brush roller and the drive roller brush. The first comb tooth group has a plurality of comb teeth evenly arranged along the length direction of the brush roller. The ends of the comb teeth of the first comb tooth group extend into the bristles of the brush roller. When the brush roller rotates to clean the filter screen, the first comb tooth group scrapes the brush roller. The second comb tooth group is connected to the base and is located on the side adjacent to the drive roller brush and the brush roller. The second comb tooth group has a plurality of comb teeth evenly arranged along the length direction of the drive roller brush. The ends of the comb teeth of the second comb tooth group extend into the bristles of the drive roller brush. When the drive roller brush rotates and drives the filter screen to move, the second comb tooth group scrapes the drive roller brush.

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