Dust removal components and air conditioning indoor units

Abstract

This utility model relates to a dust removal component and an indoor air conditioning unit, belonging to the field of air conditioning technology. The dust removal component includes a dust removal cover and a dust removal bracket. The dust removal cover and the dust removal bracket are mated together. A side track for moving the filter and a dust falling space for dust to fall are provided between the dust removal cover and the dust removal bracket, and the side track extends along the height direction of the dust removal bracket. A dust collection box component is located at the bottom of the dust falling space. The dust collection box component includes a box body and an air-guiding structure located within the box body. The box body is connected to the dust falling space and is used to collect dust falling into the dust falling space. The air-guiding structure is used to create negative pressure inside the box body. This utility model improves dust collection efficiency and prevents secondary contamination of the filter by dust through the air-guiding structure within the dust collection box, thereby enhancing the user experience.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a dust removal component and an indoor air conditioner unit. Background Technology

[0002] In related technologies, an automatic filter cleaning mechanism is installed in the indoor unit of an air conditioner to ensure the air intake of the indoor unit. During the cleaning process, dust falls into the dust collection box by gravity. However, if the structure forming the dust falling space is irregularly shaped or the dust is relatively light, the dust tends to accumulate at the bends of the irregular structure or scatter to other places besides the dust collection box, affecting the cleaning effect of the filter and the dust collection effect. It can also cause secondary pollution to the filter and the filter cleaning brush. Furthermore, this dust can only be cleaned after the user disassembles the structural components used to clean the filter, which is time-consuming and laborious, reducing the user experience. Utility Model Content

[0003] To overcome the problem in related technologies that dust falls into locations other than the dust collection box during filter cleaning, affecting the filter cleaning and dust collection effects, the first aspect of this utility model proposes a dust removal component, which includes: A dust removal cover and a dust removal bracket are provided. The dust removal cover and the dust removal bracket are mated together. A side track for the filter screen to move and a dust falling space for dust to fall are provided between the dust removal cover and the dust removal bracket. The side track extends along the height direction of the dust removal bracket. A dust collection box assembly is located at the bottom of the dust falling space. The dust collection box assembly includes a box body and an air-guiding structure located in the box body. The box body is connected to the dust falling space and is used to collect dust falling into the dust falling space. The air-guiding structure is used to create a negative pressure inside the box body.

[0004] According to the dust removal component of this utility model, by setting an air-guiding structure in the dust collection box to generate negative pressure inside the box, the dust falling into the dust falling space is adsorbed into the box through the negative pressure, thereby improving the dust collection effect and preventing dust from secondary contaminating the filter screen, thus improving the user experience.

[0005] In some embodiments, the box is provided with a filter structure that divides the interior of the box into a connected upper space and a lower space. An air inlet is provided on the side of the box near the dust removal cover, and the air inlet corresponds to the lower space. The air intake structure is located in the box at the position corresponding to the air inlet. When the air-guiding structure is in the air-guiding state, the airflow in the dust falling space flows through the upper space and the lower space in sequence and then flows out of the box through the air-guiding port, so that a negative pressure is formed inside the box.

[0006] According to the dust removal component of this utility model, by setting the air intake structure at the air intake of the box, the air intake structure accelerates the air flow in the box and the dust falling space, and directs the airflow in the box and the dust falling space out from the air intake, thereby creating a negative pressure in the box. In addition, the filter structure set in the box prevents dust in the upper space from entering the lower space, avoiding secondary pollution to the internal structure of the air conditioner indoor unit where the dust removal component is installed or the indoor environment after the dust is discharged from the air intake. At the same time, the filter structure also connects the upper space and the lower space, so that the airflow can circulate between the upper space and the lower space.

[0007] In some embodiments, the air-guiding structure includes an air-guiding plate and an air-guiding motor, wherein the air-guiding plate is rotatably disposed at the air-guiding inlet, and the air-guiding motor is connected to the air-guiding plate; When the air-guiding structure is in the air-guiding state, the air-guiding motor drives the air-guiding plate to rotate.

[0008] The dust removal component of this utility model is designed with an air-guiding plate as the air-guiding structure, and the airflow inside the box and the dust falling space is drawn out by controlling the air-guiding plate to rotate at the air-guiding port. The structure is simple, the production cost is low, and it is easy to promote and implement.

[0009] In some embodiments, when the air-guiding structure is in a non-air-guiding state, the air-guiding motor drives the air-guiding plate to block the air-guiding port.

[0010] According to the dust removal component of this utility model, the air inlet is blocked by the air inlet plate when the air is not being drawn, thereby preventing external dust and impurities from entering the box through the air inlet.

[0011] In some embodiments, there are multiple air inlets, which are arranged along the length and / or height of the box body. There are multiple air inlet structures, which are arranged one-to-one with the multiple air inlets.

[0012] According to the dust removal component of this utility model, by setting multiple air-guiding structures, the negative pressure inside the box can be adjusted according to the dust state of the filter screen, so as to ensure the dust collection effect.

[0013] In some implementations, multiple air-expelling structures can be controlled to be in an air-expelling state simultaneously, or partially in an air-expelling state. The number of air-guiding structures in the air-guiding state is determined according to the degree of dust accumulation on the filter screen.

[0014] According to the dust removal component of this utility model, by controlling multiple air-guiding structures to be in air-guiding state simultaneously or partially in air-guiding state, the negative pressure level inside the box can be regulated. This allows for adjustment of the negative pressure level inside the box based on the dust condition, achieving optimal dust collection. Furthermore, the number of air-guiding structures in air-guiding state can be determined based on the degree of dust accumulation on the filter screen, ensuring optimal dust collection even when dust accumulation is severe.

[0015] In some embodiments, the side track extends along the height direction of the dust removal assembly, the side track is disposed on the dust removal bracket, the side track has a curved portion that protrudes outward away from the dust removal cover, and a dust falling space is formed between the dust removal cover and the dust removal bracket, which is wide in the middle and narrow at both ends.

[0016] According to the dust removal component of this utility model, by setting a curved part on the side track, the extra space between the heat exchanger and the front panel can be fully utilized in the application scenario of air conditioning indoor unit, avoiding excessive thickness of the whole unit. By setting the curved part, the distance of the dust falling space in the width direction of the indoor unit can be increased, thereby facilitating the falling of dust inside the dust removal component and making it easier to collect dust.

[0017] In some embodiments, the dust removal bracket includes a bracket surface facing the dust removal cover plate, the dust removal cover plate includes a cover plate surface facing the dust removal bracket, the side rail is disposed on the bracket surface, the cover plate surface is provided with a protruding rib, and the protruding end of the protruding rib defines a limiting rail between the protruding end of the protruding rib and the bracket surface.

[0018] According to the dust removal component of this utility model, a limiting track is defined between the protruding ribs on the cover plate and the support surface to prevent the filter screen from arching and deforming when moving in the side track, which would increase the running resistance or even cause it to get stuck during operation.

[0019] In some embodiments, the dust removal assembly includes a cleaning mechanism, the cleaning mechanism comprising: A brush assembly is disposed at the top of the dust falling space. The brush assembly includes a dust removal brush and a brush motor that drives the dust removal brush to move. When the dust removal brush is driven to move by the brush motor, it has an active cleaning position and a passive cleaning position. A brush cleaning structure is provided at the position on the dust removal cover corresponding to the passive cleaning position; When the dust removal brush moves to the active cleaning position, it can contact the surface of the filter screen in the moving state to clean the filter screen. When the dust removal brush moves to the passive cleaning position, it can achieve self-cleaning through the brush cleaning structure.

[0020] According to this utility model, the dust removal component integrates the cleaning mechanism, dust removal cover, and dust removal bracket into a single structure, simplifying component installation and improving assembly efficiency in air conditioning indoor unit applications. Simultaneously, by controlling the movement of the dust removal brush in active and passive cleaning positions, the filter is cleaned in the active cleaning position, while the brush self-cleansing is achieved in the passive cleaning position through the brush cleaning structure. This ensures the cleaning power of the dust removal brush, extends its service life, and ensures that dust falling during filter cleaning and brush self-cleaning is collected by the dust collection box assembly, guaranteeing cleaning effectiveness and improving the user experience.

[0021] In some embodiments, the brush cleaning structure includes cleaning teeth protruding from the dust removal cover plate, the cleaning teeth cooperating with the dust removal brush to achieve self-cleaning of the dust removal brush.

[0022] The dust removal component of this utility model achieves self-cleaning of the dust removal brush by cooperating with the cleaning teeth. It has a simple structure, low production cost, and is easy to promote and use.

[0023] A second aspect of this utility model provides an air conditioner indoor unit, the air conditioner indoor unit comprising: A housing having an air inlet, and a top track extending along the width direction of the housing at a position corresponding to the air inlet inside the housing, the housing including a front panel; An indoor heat exchanger is disposed inside the housing and is used to exchange heat with the airflow entering the housing through the air inlet. An installation space is formed between the indoor heat exchanger and the front panel. The dust removal component proposed in the first aspect of this utility model is disposed in the installation space, and the dust removal bracket is disposed close to the indoor heat exchanger, and the top track is connected to the side track; A filter screen is movably disposed in a filter screen track, the filter screen track including the top track and the side track, and the cleaning mechanism of the dust removal assembly is used to clean the filter screen as the filter screen moves within the filter screen track.

[0024] According to the present invention, the indoor unit of the air conditioner adopts a dust collection box with an air-guiding structure, which can achieve better dust collection effect during the cleaning process of the filter screen, and avoid secondary pollution of the filter screen, dust collection bracket and dust collection panel by falling dust, thereby improving the user experience.

[0025] In some embodiments, the indoor unit of the air conditioner further includes a humidity sensor and a control device, wherein the humidity sensor is used to detect the humidity value of the environment in which the filter is located; The control device is configured to control the filter, the cleaning mechanism, and the air intake structure based on the humidity value detected by the humidity sensor.

[0026] According to the present invention, the indoor unit of the air conditioner determines the humidity state of the dust on the filter screen by detecting the humidity value of the environment in which the filter screen is located, and then determines whether to clean the filter screen based on the humidity state, and whether to control the air intake structure to be in the air intake state during the cleaning process, thereby obtaining the optimal filter screen cleaning effect and dust collection effect.

[0027] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0029] Figure 1 This is a schematic diagram of the dust removal component according to an embodiment of the present invention (all air-guiding structures are in the air-guiding state).

[0030] Figure 2 This is a schematic diagram of the dust removal component according to an embodiment of the present invention (part of the air intake structure is in the air intake state).

[0031] Figure 3 This is a schematic diagram of the dust removal component according to an embodiment of the present invention (all air-exhausting structures are in a non-air-exhausting state).

[0032] Figure 4 This is a cross-sectional schematic diagram of the dust removal component according to an embodiment of the present invention.

[0033] Figure 5 This is a side view of the dust removal component according to an embodiment of the present invention.

[0034] Figure 6 This is a cross-sectional view of the dust removal component according to an embodiment of the present invention (the dust removal brush is in the active cleaning position).

[0035] Figure 7 This is a cross-sectional view of the dust removal component according to an embodiment of the present invention (the dust removal brush is in a passive cleaning position).

[0036] Figure 8 This is a cross-sectional view of a dust removal component according to another embodiment of the present invention (with two dust removal brushes).

[0037] Figure 9 This is a schematic diagram of the structure of a dust removal component according to another embodiment of the present invention.

[0038] Figure 10 This is a schematic diagram of the structure of the dust removal bracket according to an embodiment of the present utility model.

[0039] Figure 11 This is a schematic diagram of the structure of the dust removal cover plate according to an embodiment of the present utility model.

[0040] Figure 12 This is an assembly drawing of the dust removal cover and cleaning mechanism according to an embodiment of this utility model.

[0041] Figure 13 This is a structural diagram of the dust collection box assembly according to an embodiment of the present invention.

[0042] Figure 14 This is one of the cross-sectional views of the indoor unit of the air conditioner according to an embodiment of this utility model.

[0043] Figure 15 This is a second cross-sectional view of the indoor unit of the air conditioner according to an embodiment of this utility model.

[0044] Figure 16 This is a partial enlarged view of the indoor unit of the air conditioner according to an embodiment of this utility model (the dust removal brush is in the active cleaning position).

[0045] Figure 17 This is a partial enlarged view of the indoor unit of the air conditioner according to an embodiment of the present invention (the dust removal brush is in the first passive cleaning position).

[0046] Figure 18 This is a partial enlarged view of the indoor unit of the air conditioner according to an embodiment of the present invention (the dust removal brush is in the second passive cleaning position).

[0047] Figure 19 This is a flowchart illustrating the filter cleaning process of an indoor air conditioning unit according to an embodiment of this utility model.

[0048] Figure 20 This is a flowchart illustrating the filter cleaning process for an indoor air conditioning unit, based on a specific example.

[0049] The attached figures are labeled as follows: Wherein: 10. Casing; 11. Air Inlet; 12. Top Rail; 13. Side Rail; 14. Air Outlet; 15. Connecting Rail; 16. Front Panel; 2. Filter; 21. Tooth; 20. Indoor Heat Exchanger; 3. Dust Fall Space; 30. Dust Collection Components; 301. Dust Collection Cover; 3011. Rib; 3012. Cleaning Tooth; 30121. First Cleaning Tooth; 30122. Second Cleaning Tooth; 3013. Limiting Rib; 30 14. Limiting track; 3015. Cover plate surface; 302. Dust collector bracket; 3021. Bracket surface; 303. Dust collection box; 3031. Box body; 3032. Air inlet; 3033. Upper space; 3034. Lower space; 3035. Filter structure; 3036. Air guide plate; 3037. Air guide fan; 304. Dust collector brush; 4033. Roller; 4044. Roller gear; 404. Decorative cover; 50. Fan components. Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0051] In related technologies, air conditioners with filter cleaning functions collect dust that falls during the filter cleaning process through a dust collection box. Since dust can only fall into the dust collection box by gravity, if the structure forming the dust falling space is irregularly shaped or the dust is relatively light, the dust tends to accumulate at the bends of the irregular structure or scatter to other places besides the dust collection box, causing secondary pollution to the filter and affecting the filter cleaning effect. Furthermore, this part of the dust can only be cleaned after the user dismantles the structural components that form the dust falling space, which is time-consuming, laborious, and reduces the user experience.

[0052] To address this technical problem, this embodiment proposes a dust removal assembly. The assembly includes a dust removal cover and a dust removal bracket that fit together. A side track for moving the filter and a dust collection space for dust to fall are formed between the cover and bracket, with the side track extending along the height of the assembly. The assembly also includes a dust collection box assembly located at the bottom of the dust collection space. The box body is connected to the dust collection space and is used to collect dust falling into it. The box body has an air-guiding structure that creates negative pressure inside the box, allowing dust falling into the dust collection space to be drawn into the box body by gravity. This prevents dust from scattering to areas other than the dust collection box and causing secondary contamination of the filter. Furthermore, it reduces the frequency of user disassembly of the dust removal assembly, saving time and effort.

[0053] The following describes this embodiment in detail with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and examples can be combined with each other.

[0054] Implementation Method 1 This embodiment proposes a dust removal component 30, which is used in an air conditioner indoor unit. The air conditioner indoor unit can be a wall-mounted air conditioner indoor unit or a cabinet air conditioner indoor unit.

[0055] like Figures 1-4 As shown, the dust removal assembly 30 includes a dust removal cover 301 and a dust removal bracket 302, with the dust removal cover 301 and the dust removal bracket 302 engaging. In one example, the dust removal assembly 30 is used in an air conditioning indoor unit application scenario, referring to... Figure 14 and Figure 15 The dust removal cover 301 and the dust removal bracket 302 are mated together in the width direction of the air conditioner indoor unit, with reference to the width direction. Figure 14 and Figure 15 The direction indicated by the X-axis. In this embodiment, the dust removal cover 301 and the dust removal bracket 302 are detachably connected, and the dust removal assembly 30 is arranged in a relatively mating form to facilitate the assembly and maintenance of the dust removal assembly 30. A side track 13 for moving the filter screen and a dust falling space 3 for dust to fall are formed between the dust removal cover 301 and the dust removal bracket 302, and the side track 13 extends along the height direction of the dust removal assembly 30, with the height direction of the dust removal assembly 30 referring to... Figure 8 The direction indicated by the Z-axis.

[0056] The dust falling space 3 has openings at both the top and bottom. The side track 13 can be directly formed on the dust removal cover 301 or the dust removal bracket 302, or the dust removal cover 301 and the dust removal bracket 302 can jointly define the side track 13. In a preferred embodiment, refer to... Figure 8 and Figure 10The side track 13 is mounted on the dust removal bracket 302. The side track 13 has a curved portion that protrudes outward away from the dust removal cover 301. A dust falling space 3, which is wider in the middle and narrower at the top and bottom, is formed between the dust removal cover 301 and the dust removal bracket 302. In the application scenario of an air conditioning indoor unit, refer to... Figure 14 and Figure 15 The curved portion protrudes outward toward the indoor heat exchanger 20 to make full use of the space between the indoor heat exchanger 20 and the front panel 16, avoiding excessive thickness of the entire unit. On the other hand, by setting the curved portion, the distance between the dust removal cover 301 and the dust removal bracket 302 can be increased, thereby increasing the size of the middle part of the dust falling space 3 and improving the dust collection effect.

[0057] Further preferred options are those that refer to... Figure 10 There are multiple side tracks 13, which are spaced apart along the length of the dust collector bracket 302 or the dust collector cover 301 to ensure the reliability of the movement of the filter screen in the side tracks 13. The length of the dust collector cover 301 is referenced. Figure 10 The direction indicated by the Y-axis.

[0058] like Figures 1-9 As shown, the dust removal assembly 30 also includes a dust collection box assembly 303, which is located at the bottom of the dust falling space 3. The dust collection box assembly 303 includes a box body and an air-guiding structure disposed on the box body 3031. The top of the box body 3031 is provided with a collection port, which is at least partially opposite to the bottom opening of the dust falling space 3 so that the box body 3031 communicates with the dust falling space 3. The box body 3031 is used to receive dust that falls into the dust falling space 3 during the cleaning of the filter screen 2. The air-guiding structure is used to create a negative pressure inside the box body 3031. Under the action of negative pressure, the dust falling from the dust falling space 3 is adsorbed into the box body 3031 along the direction of gravity, preventing the dust from scattering to other locations outside the box body 3031 during the falling process and causing secondary pollution to the filter screen, ensuring the cleaning effect of the filter screen, and under the action of negative pressure, the dust falling speed increases, improving the dust collection efficiency.

[0059] In one example, refer to Figure 4 The bottom of the dust collector bracket 302 protrudes from the dust collector cover plate 301 and has an installation cavity. The box body 3031 is detachably installed in the installation cavity, and the upper part of the box body 3031 is fastened to the bottom of the dust collector cover plate 301 by a fastener, so that the user can remove the dust collection box assembly 303 from the installation cavity to clean the dust collected in the dust collection box assembly 303.

[0060] <Wind-exhausting structure> There are various structural forms of air intake structures. The following examples illustrate the different structural forms of air intake structures.

[0061] Example 1 of the exhaust structure (not shown in the example diagram): The exhaust structure includes a pumping device. The suction end of the pumping device is connected to the inside of the housing 3031, and the exhaust end is connected to the outside of the housing 3031. When the exhaust structure is in exhaust mode, the pumping device draws the gas inside the housing 3031 to the outside of the housing 3031, thereby creating a negative pressure inside the housing 3031. To prevent dust falling into the housing 3031 from entering the pumping device through the suction end, a filter structure is installed inside the housing 3031 at a position higher than the suction end of the pumping device to filter the dust, or a filter structure can be directly installed at the suction end of the pumping device.

[0062] Example 2 of the air-guiding structure (not shown in the figure): The air-guiding structure includes an airflow hole on the side wall of the housing 3031. A filter structure is provided at the airflow hole to prevent dust inside the housing 3031 from flying out through the airflow hole. In the application scenario of the indoor unit of the air conditioner, there is an airflow passage between the air outlet 14 of the indoor unit and the airflow hole. When air is discharged from the air outlet 14, the airflow inside the housing 3031 enters the air outlet 14 through the airflow passage between the air outlet 14 and the airflow hole under the action of the fan component 50, and is finally discharged from the air outlet 14, so that a negative pressure is formed inside the housing 3031.

[0063] Example 3 of the air intake structure, such as Figures 1-3 , Figure 8 , Figure 9 , Figure 13 As shown, a filter structure 3035 is provided inside the housing 3031. The filter structure 3035 divides the internal chambers of the housing 3031 into a connected upper space 3033 and a lower space 3034. The filter structure 3035 can be a partition or filter screen with dense small holes, or it can be a combination structure of a partition and a filter screen with multiple connecting holes. An air inlet 3032 is provided on the side of the housing 3031 near the dust collection cover 301. The air inlet 3032 corresponds to the lower space 3034. Dust from the dust falling space 3 enters the upper space 3033. The filter structure 3035 prevents dust in the upper space 3033 from entering the lower space 3034. On the other hand, the filter structure 3035 also connects the upper space 3033 and the lower space 3034. The air-guiding structure is located in the box 3031 at the position corresponding to the air-guiding port 3032. When the air-guiding structure is in the air-guiding state, the airflow in the dust falling space 3 flows through the upper space 3033 and the lower space 3034 in sequence and then flows out of the box 3031 through the air-guiding port 3032, so that a negative pressure is formed inside the box 3031.

[0064] Reference Figures 1-3 , Figure 8The air-guiding structure includes an air-guiding plate 3036 and an air-guiding motor (not shown in the figure). The air-guiding plate 3036 is rotatably disposed at the air-guiding port 3032. The air-guiding motor is connected to the air-guiding plate 3036. When the air-guiding structure is in the air-guiding state, the air-guiding motor drives the air-guiding plate 3036 to rotate. Specifically, the air-guiding plate 3036 extends along the length direction of the box 3031. The air-guiding plate 3036 is rotatably disposed at the middle of the air-guiding port 3032 via rotating shafts located at both ends of its length direction. The air-guiding motor is connected to the rotating shafts of the air-guiding plate 3036 to drive the air-guiding plate 3036 to flip from the inside to the outside and from top to bottom in the air-guiding port 3032, so as to guide the airflow inside the box 3031 to the outside of the box 3031, so that the inside of the box 3031 is in a negative pressure state. The air-guiding plate 3036 also has a non-air-guiding state. When the air-guiding structure is in a non-air-guiding state, the air-guiding motor drives the air-guiding plate 3036 to block the air-guiding port 3032 to prevent external impurities from entering the box 3031 through the air-guiding port 3032.

[0065] Among other possible implementation methods, refer to Figure 9 The air intake structure includes an air intake fan 3037, which is located at the air intake port 3032. When the air intake fan 3037 is started, it can transport the airflow inside the box 3031 to the outside of the box 3031. For example, the air intake fan 3037 is a cross-flow fan.

[0066] In some implementations, such as Figures 1-3 , Figure 9 As shown, there are multiple air inlets 3032, which are arranged along the length and / or height of the housing 3031. There are also multiple air-guiding structures, each corresponding to one of the multiple air inlets 3032. These multiple air-guiding structures can be controlled to be in air-guiding mode simultaneously, or partially in air-guiding mode, and the number of air-guiding structures in air-guiding mode is determined by the degree of dust accumulation on the filter screen.

[0067] This embodiment allows for the regulation of the negative pressure level within the housing, enabling adjustment based on the dust condition to achieve optimal dust collection. Simultaneously, the degree of dust accumulation on the filter 2 determines whether to control all or only some of the air intake structures in a ventilating state. When the dust accumulation on the filter 2 is severe, a large amount of dust falls into the dust collection space 3 during cleaning. In this case, a higher negative pressure needs to be created within the housing 3031 to ensure that as much dust as possible falls into the housing 3031. Conversely, when the dust accumulation on the filter 2 is light, less dust falls into the dust collection space 3 during cleaning. In this case, a lower negative pressure is sufficient to ensure that at least most of the dust falls into the housing 3031.

[0068] The implementation method does not specifically limit the method of determining the degree of dust accumulation on the filter screen 2. In the application scenario of air conditioner indoor unit, when the filter screen 2 is the filter screen 2, the degree of dust accumulation is determined by detecting the air intake air volume of the air inlet 11, or the filter screen 2 is weighed before cleaning, and the degree of dust accumulation is determined by the weight of the filter screen 2.

[0069] <Dust removal bracket, dust removal cover> like Figure 10 and Figure 11 As shown, the dust removal cover 301 is a flat plate that is approximately parallel to the front panel 16, and the dust removal bracket 302 is an arc-shaped plate that matches the shape of the side track 13. The filter screen is cleaned by the cleaning mechanism within the side track 13, and the dust generated during the cleaning process enters the dust falling space 3.

[0070] The dust collector bracket 302 includes a bracket surface 3021 facing the dust collector cover plate 301, and the dust collector cover plate 301 includes a cover surface 3015 facing the dust collector bracket 302. The dust falling space 3 is located between the bracket surface 3021 and the cover surface 3015. The bracket surface 3021 has a side track 13, which is, for example, a channel structure formed by multiple ribs on the dust collector bracket 302 and the bracket surface 3021, allowing the filter screen 2 to move. The cover surface 3015 has a protruding rib 3011. When the dust collector cover plate 301 and the dust collector bracket 302 are mated together, there is a distance between the protruding end of the rib 3011 and the bracket surface 3021 of the dust collector bracket 302, so as to define a limiting track 3014 for the movement of the filter screen 2.

[0071] In the application scenario of an air conditioner indoor unit, when the filter 2 moves to the position of the side track 13, at least a portion of the filter 2 along the length of the air conditioner indoor unit is located within the side track 13 and at least a portion is located within the limiting track 3014. Preferably, as Figure 11 As shown, multiple protruding ribs 3011 are provided along the length of the cover plate surface 3015. Multiple limiting tracks 3014 are defined between the protruding ends of the multiple protruding ribs 3011 and the support surface 3021 of the dust collector bracket 302. The length of the cover plate surface 3015 is referenced... Figure 11 The direction indicated by the Y-axis.

[0072] The implementation method defines a limiting track 3014 between the protruding rib 3011 and the support surface 3021 of the dust removal bracket 302, which limits the movement position of the filter screen in the side track 13, preventing the filter screen from arching and deforming during movement in the side track 13, which would increase the running resistance or even cause it to get stuck during operation.

[0073] In a preferred embodiment, such as Figure 4 , Figure 6 and Figure 7As shown, the shape of the rib 3011 is adapted to the curvature of the dust removal bracket 302, so that the interior of the dust removal component 30 is a dust falling space 3 that is wide in the middle and narrow at both ends, which makes it easy for the dust inside the dust removal component 30 to fall into the box 3031, and facilitates the collection of dust.

[0074] Cleaning services The dust removal assembly 30 in this embodiment includes a cleaning mechanism for cleaning the filter screen 2. The cleaning mechanism can employ various cleaning methods, including brush cleaning, high-pressure airflow washing, and spray rinsing, or a combination of one or more of these methods.

[0075] In one example, such as Figure 4 , Figures 6-8 , Figure 12 As shown, the cleaning mechanism includes a brush assembly for cleaning the surface of the filter screen 2 and a brush cleaning structure for self-cleaning the dust removal brush 304. The brush assembly is located at the top of the dust falling space 3 and includes a dust removal brush 304 and a brush motor (not shown) that drives the dust removal brush 304 to move. For example, the brush motor can drive the dust removal brush 304 to move, placing the brush head of the dust removal brush 304 in different positions, and can also drive the brush head of the dust removal brush 304 to rotate in the same position. When driven by the brush motor, the dust removal brush 304 has an active cleaning position and a passive cleaning position. The brush cleaning structure is located on the dust removal cover 301 and corresponds to the passive cleaning position. When the dust removal brush 304 moves to the active cleaning position, it can contact the surface of the moving filter screen to clean the filter screen surface. When the dust removal brush 304 moves to the passive cleaning position, it can achieve self-cleaning through the brush cleaning structure. The cleaning mechanism of this embodiment can not only clean the filter screen, but also perform self-cleaning, thereby reducing the frequency of cleaning the brush assembly and improving the user experience.

[0076] like Figures 6-8 , Figure 11As shown, the brush cleaning structure includes cleaning teeth 3012 protruding from the dust removal cover plate 301. The cleaning teeth 3012 cooperate with the rotating dust removal brush 304 to achieve self-cleaning of the dust removal brush 304. The cleaning teeth 3012 are, for example, ribbed or comb-like structures. Preferably, the cleaning teeth 3012 include a first cleaning tooth 30121 and a second cleaning tooth 30122 protruding from the cover plate surface 3015. The passive cleaning positions include a first passive cleaning position and a second passive cleaning position. When the dust removal brush 304 is driven to the first passive cleaning position, it can contact the first cleaning tooth 30121. When the dust removal brush 304 is driven to the second passive cleaning position, it can contact the second cleaning tooth 30122. The protrusion heights of the first cleaning tooth 30121 and the second cleaning tooth 30122 are different, so that the dust removal brush 304 can be cleaned at different depths by the cleaning teeth 3012 with different protrusion heights. This embodiment, by setting cleaning teeth 3012 with different protrusion heights, can both ensure the self-cleaning effect of the dust removal brush 304 and extend the service life of the dust removal brush 304, avoiding the problems of reduced brush life and incomplete cleaning caused by using cleaning teeth 3012 of the same length to clean the dust removal brush 304.

[0077] Furthermore, such as Figures 6-8 As shown, the dust removal cover plate 301 is also provided with a limiting rib 3013, which is used to limit the dust removal brush 304 when it moves to the active cleaning position and the passive cleaning position.

[0078] In a preferred embodiment, such as Figure 4 and Figure 8 As shown, the brush assembly includes two dust-removing brushes 304, arranged back-to-back. The positions of the two brushes 304 are such that when one brush is in the active cleaning position, the other is in the passive cleaning position. A brush motor drives the two brushes 304 to move synchronously. That is, during the cleaning of the filter screen 2, one of the brushes 304 is in the active cleaning position, contacting the filter screen 2. As the filter screen 2 moves within the side track 13, this brush cleans the filter screen 2. At this time, the other brush 304 is in the passive cleaning position, and the cleaning teeth 3012 cooperate with the rotating brush 304 to perform self-cleaning. After the preset dust removal time is reached, the brush motor drives the two dust removal brushes 304 to exchange positions. The dust removal brush 304, which has completed self-cleaning, begins to clean the filter screen 2. The cleaning teeth 3012 cooperate with the dust removal brush 304 after dust removal to perform self-cleaning on the dust removal brush 304. This embodiment improves the cleaning effect on the filter screen and extends the service life of the dust removal brush 304 by setting two dust removal brushes 304.

[0079] In other possible ways, the brush cleaning structure can blow off the dust adhering to the dust removal brush 304 by blowing a high-pressure airflow onto the dust removal brush 304.

[0080] Implementation Method 2 This embodiment proposes an indoor air conditioner unit, which can be either a wall-mounted or a floor-standing unit. The following detailed description uses a wall-mounted unit as an example, but this should not be construed as limiting the scope of protection of this invention.

[0081] like Figure 14 and Figure 15 As shown, the indoor unit of the air conditioner includes a casing 10, an indoor heat exchanger 20, a filter 2, and any of the dust removal components 30 proposed in Embodiment 1. The casing 10 has an air inlet 11 and an air outlet 14. A top track 12 extending along the width direction of the casing 10 is provided at a position corresponding to the air inlet 11. For example, an air inlet grille is provided at the air inlet 11, and the top track 12 is formed within the air inlet grille. The casing 10 includes a front panel 16. The indoor heat exchanger 20 is disposed inside the casing 10 and is used to exchange heat with the airflow entering the casing 10 through the air inlet 11. An installation space is formed between the indoor heat exchanger 20 and the front panel 16.

[0082] The casing 10 also houses a fan assembly 50. An indoor heat exchanger 20 is located in the airflow path between the fan assembly 50 and the air inlet 11. When the fan assembly 50 is running, the airflow that has been heated by the indoor heat exchanger 20 is discharged from the air outlet 14. A dust removal assembly 30 is located within the installation space, and a dust removal bracket 302 is positioned close to the indoor heat exchanger 20. A top track 12 is connected to a side track 13. A filter screen 2 is movably mounted on a filter screen track, which includes a top track 12 and a side track 13. The filter screen 2 has a filtration position where at least a majority of its area is located within the top track 12 to cover the air inlet 11, and a dust removal position where at least a portion of its area is located within the side track 13 for cleaning by a cleaning mechanism. The cleaning mechanism of the dust removal assembly 30 cleans the filter screen 2 as it moves between the filtration position and the dust removal position. During the cleaning process of filter screen 2, the dust removal bracket 302 prevents the dust swept off the filter screen 2 from entering the indoor heat exchanger 20, thus preventing secondary pollution to the indoor heat exchanger 20, fan components 50, and indoor environment.

[0083] In a preferred embodiment, there are multiple top tracks 12, which are spaced apart along the length of the housing 10. Each top track 12 corresponds to one of the multiple side tracks 13 of the dust removal assembly 30. Each top track 12 extends along the width of the housing 10, and each side track 13 extends along the height of the housing 10. The top tracks 12 and side tracks 13 are directly connected or connected via connecting tracks 15. (The length direction of the housing 10 is referenced...) Figure 14 and Figure 15 Reference in the Y-axis direction and width direction Figure 14 and Figure 15 Reference in the X-axis direction and height direction Figure 14 and Figure 15 In the Z-axis direction.

[0084] There are several ways the filter screen 2 can move. For example, the filter screen 2 can move in the form of a roller, wound onto a rotating shaft under the action of the roller. Along the direction of movement of the filter screen 2, the cleaning mechanism is located upstream of the roller. In a preferred embodiment, such as... Figure 14-18 As shown, the indoor unit of the air conditioner also includes a filter drive device, which includes a drum motor and a drum 4033. The drum 4033 is fixed between the top track 12 and the side track 13. The drum motor is connected to the drum 4033 to drive the drum 4033 to rotate. The drum 4033 is provided with a drum gear 4044, and the filter 2 is provided with teeth 21 that mesh with the drum gear 4044. The filter 2, which meshes with the drum gear 4044 through the teeth 21, can be driven to move in the filter track when the drum 4033 rotates. It should be noted that the filter 2 is only provided with teeth 21 at the position where it meshes with the teeth of the drum 4033, and is not provided with teeth 21 in other parts, to avoid providing too many teeth 21 and affecting the air intake of the indoor unit of the air conditioner.

[0085] Furthermore, such as Figure 14-18 As shown, the roller 4033 is positioned on top of the dust removal bracket 302. The dust removal cover 301 protrudes outward from the housing 10 at the position corresponding to the roller 4033, providing installation space for the roller 4033. The air conditioner indoor unit also includes a decorative cover 404, which covers the portion of the dust removal bracket 302 corresponding to the roller 4033, ensuring the overall consistency and aesthetics of the air conditioner indoor unit. A connecting rail 15 defines a connection between the dust removal bracket 302 and the roller 4033. The top rail 12 and the side rail 13 are connected via the connecting rail 15. The cleaning mechanism is located within the dust removal assembly 30 at the position corresponding to the roller 4033.

[0086] It should be noted that, in this embodiment, a portion of the filter screen 2 is always engaged with the roller gear 4044 during movement, thereby improving the stability of the filter screen 2 during movement.

[0087] In some embodiments, the indoor unit of the air conditioner also includes a humidity sensor (not shown in the figure) and a control device (not shown in the figure). The humidity sensor is used to detect the humidity value of the environment where the filter 2 is located, and the control device is configured to control the position state of the filter 2, the working state of the cleaning mechanism, and the working state of the air-driving structure based on the humidity value detected by the humidity sensor. Since the cleaning effect of the cleaning mechanism on the filter 2 and the dust collection effect are related to the humidity of the dust on the filter, if the dust humidity is too high, dust will easily adhere to the filter 2, the brush, the side track 13, and the limiting track 3014. If the dust humidity is too low, the dust is lighter and will easily fall to other locations except the housing 3031, affecting the dust collection effect and causing secondary pollution to the side track 13, the limiting track 3014, and the filter 2. Therefore, this embodiment controls the filter 2, the cleaning mechanism, and the air-driving structure based on the humidity value detected by the humidity sensor to obtain the best cleaning effect on the filter 2 and the best dust collection effect.

[0088] It should be noted that the humidity sensor can be set in the housing 10 at the position corresponding to the air inlet 11, in the housing 10 at the position corresponding to the roller 4033 or the cleaning mechanism, and / or in the dust falling space 3, in order to detect the humidity value of the environment where the filter screen 2 is located. This humidity value reflects the humidity of the dust on the filter screen 2.

[0089] Furthermore, the control device is also configured to, when the humidity value is within a preset humidity range, control the filter 2 to move between the filtration position and the dust removal position, and control the cleaning mechanism to clean the filter 2; when the humidity value is less than the minimum value of the preset humidity range, control the filter 2 to move between the filtration position and the dust removal position, control the cleaning mechanism to clean the filter 2, and control the air intake structure to be in the air intake state.

[0090] In this embodiment, when the humidity value is within the preset humidity range, the dust is heavier and easily falls into the housing 3031 without scattering to other locations in the dust falling space 3. Therefore, there is no need to control the air intake structure to enter the air intake state during the cleaning of the filter 2. When the humidity value is less than the minimum value of the preset humidity range, the dust is lighter and easily falls onto the dust collection bracket 302 and the dust collection cover 301. During the cleaning of the filter 2, it is necessary to control the air intake structure to enter the air intake state to generate negative pressure within the housing 3031 to adsorb the dust in the dust falling space 3, ensuring effective dust collection and preventing secondary contamination of the filter 2.

[0091] During the cleaning process of filter screen 2, the control device moves filter screen 2 between the filtration position and the dust removal position. To prevent the dust swept off filter screen 2 from causing secondary pollution to the cleaned filter screen 2, filter screen 2 can be moved from the filtration position to the dust removal position first, and then moved from the dust removal position back to the filtration position. During the movement of filter screen 2 from the dust removal position back to the filtration position, the cleaning mechanism cleans filter screen 2 until filter screen 2 is completely reset to the filtration position, thus completing one cleaning process of filter screen 2. In addition, when the dust accumulation on filter screen 2 is severe, multiple cleaning processes can be performed to achieve a thorough cleaning of filter screen 2.

[0092] When the cleaning mechanism is a dust removal brush 304, and the dust removal brush 304 has an active cleaning position and a passive cleaning position, the control device first controls the dust removal brush 304 to move to the active cleaning position to contact the filter screen 2. During the movement of the filter screen 2, the brush cleans the filter screen 2. After cleaning the filter screen 2, the control device also controls the dust removal brush 304 to move to the passive cleaning position. The dust removal brush 304 rotates and engages with the cleaning teeth 3012 at the passive cleaning position to achieve self-cleaning. When the air extraction structure is an air extraction plate 3036, the control device also controls the air extraction plate 3036 to rotate at the air extraction port 3032 to exhaust the airflow inside the box 3031, thereby creating a negative pressure inside the box 3031.

[0093] Furthermore, the control device is configured to dry the filter 2 when the humidity value exceeds the maximum value of a preset humidity range, and after the drying process is completed, re-execute the step of obtaining the humidity value of the environment where the filter 2 is located. In this embodiment, when the humidity value exceeds the maximum value of the preset humidity range, the dust humidity is too high. On the one hand, it is difficult to remove the dust from the filter 2, and on the other hand, the dust that falls off is easy to adhere to the dust removal brush 304, the side track 13, and the limiting track 3014. At this time, the filter 2 is not cleaned first, and the filter 2 remains in the filtering position. The control device controls the indoor unit of the air conditioner to dry the filter 2. The drying process can be, for example, by controlling the indoor unit of the air conditioner to operate in dehumidification mode, or by setting a heating element at the position corresponding to the filter 2 in the indoor unit of the air conditioner and controlling the heating element to heat the filter 2 to dry the filter 2. After the drying process is completed, the humidity value of the environment where the filter 2 is located is re-detected, and the filter 2, the cleaning mechanism, and the air duct structure are controlled according to the detection results.

[0094] Furthermore, when the dust collection box assembly 3031 has multiple air-guiding structures, before controlling the air-guiding structures to be in the air-guiding state, the control device first determines the degree of dust accumulation on the filter screen 2 by detecting the air intake volume of the air inlet 11 or the weight of the filter screen 2. When the degree of dust accumulation is greater than a preset value, it indicates that the amount of dust is large, and a large negative pressure needs to be formed inside the box 3031 to adsorb most of the dust into the box 3031. At this time, all air-guiding structures are controlled to be in the air-guiding state. When the degree of dust accumulation is less than or equal to the preset value, the amount of dust is small, and only a small negative pressure is needed to adsorb most of the dust into the box 3031. Moreover, if the negative pressure is too large, it will also adsorb the dust that falls onto the filter structure 3035 onto the air-guiding structures. At this time, some air-guiding structures are controlled to be in the air-guiding state, and other air-guiding structures are in the non-air-guiding state.

[0095] Implementation Method 3 This embodiment proposes a method for cleaning the filter of an air conditioner indoor unit. The filter cleaning method is applied to any of the air conditioner indoor units proposed in Embodiment 2, with reference to... Figure 19 The filter cleaning process flowchart shows the following steps: S191. Obtain the humidity value of the environment where filter 2 is located; S192. Control the filter 2, cleaning mechanism and air intake structure according to the humidity value detected by the humidity sensor.

[0096] Furthermore, the filter 2, cleaning mechanism, and airflow structure are controlled based on the humidity value detected by the humidity sensor. This includes: when the humidity value is within a preset humidity range, controlling the filter 2 to move within the filter track, and controlling the cleaning mechanism to clean the filter 2 when it reaches the dust removal position; when the humidity value is less than the minimum value of the preset humidity range, controlling the filter 2 to move within the filter track, and controlling the cleaning mechanism to clean the filter 2 when it reaches the dust removal position, while controlling the airflow structure to be in the airflow state. When the humidity value is greater than the maximum value of the preset humidity range, the filter 2 is dried, and after the drying process is completed, the step of obtaining the humidity value of the environment where the filter 2 is located is repeated.

[0097] Furthermore, the dust collection box assembly 303 has a box body 3031 with multiple air-guiding structures. Before the air-guiding structures are in the air-guiding state, the filter cleaning method also includes: determining the degree of dust accumulation on the filter 2; when the degree of dust accumulation is greater than a preset value, controlling all air-guiding structures to be in the air-guiding state; when the degree of dust accumulation is less than or equal to the preset value, controlling some air-guiding structures to be in the air-guiding state.

[0098] The above filter cleaning methods have been described in detail in the implementation of the device section, and will not be repeated here.

[0099] The following detailed explanation of the filter cleaning method for the indoor unit of an air conditioner, using a specific example, illustrates the implementation method in detail.

[0100] Combination Figures 1-3 The dust collection box assembly 303 has an air inlet 3032 at the air outlet 3032 of the box body 3032, which can guide the dust in the dust removal brush 304, filter screen 2 and dust falling space 3, so as to ensure that the dust falls vertically instead of flying to other areas in the dust falling space 3, thereby causing secondary pollution to the dust removal brush 304 and filter screen 2.

[0101] Combination Figure 20 The filter cleaning process flowchart shows that before cleaning filter 2, the humidity data returned by the humidity sensor (including the humidity at the dust removal brush 304 and the humidity in the dust falling space 3) is used to determine whether filter 2 needs to be dried based on the dust humidity. This prevents the filter 2 from being stuck in the track due to excessive resistance caused by wet dust. Dust with moderate humidity can fall as much as possible from the contact point between filter 2 and dust removal brush 304, and then fall into the housing 3031.

[0102] Determine if the detected humidity value is greater than or equal to the preset value M1 and less than or equal to M2. If so, the dust is relatively heavy and easily falls into the housing 3031. The filter 2 is then cleaned and reset. If it is not within this range, further determine if the humidity value is greater than M3. If so, the dust is too wet and easily adheres to the dust removal brush 304 and the side track 13. Therefore, the filter 2 remains in its initial position, and the indoor unit of the air conditioner starts the dehumidification mode to dry the dust on the filter. If the humidity at the dust removal brush 304 is less than M1, the dust is relatively light and easily falls onto the dust removal bracket 302 and the dust removal cover 301. In this case, the air duct 3036 needs to be controlled to enter the air ducting state.

[0103] Combination Figures 14-18During the filter cleaning process, the filter 2 moves to the microswitch position at the air inlet 11 and resets. When the filter 2 needs cleaning, it first moves to the side track 13. After the filter 2 reaches its position (a microswitch is added at the end of the stroke for program control), the dust removal brush 304 moves from the initial position to the active cleaning position. The dust removal brush 304 rotates 180° from the initial position to be tangent to the roller 4033. The initial position is when the dust removal brush 304 is aligned with the first cleaning tooth 30121. The filter 2 moves from the side track 13 to the top track 12, while the dust removal brush 304 remains stationary in the active cleaning position. During the movement of the filter 2, dust is swept away. Some of the swept dust falls into the box 3031, some scatters onto the dust removal cover 301 and the dust removal bracket 302, and some remains suspended on the dust removal brush 304. When the filter 2 reaches its initial position (i.e., the position corresponding to the air inlet 11, controlled by a microswitch at the initial end of the stroke via a program), the dust removal brush 304 rotates to the first passive cleaning position. It achieves the first self-cleaning of the dust removal brush 304 by contacting the first cleaning tooth 30121 to remove the lint and hair-like substances on the dust removal brush 304 itself. Then it continues to rotate counterclockwise to the second passive cleaning position, achieving the second self-cleaning by contacting the second cleaning tooth 30122 to remove the fine dust and particulate matter on the dust removal brush 304 itself. The dust generated during the self-cleaning process of the dust removal brush 304 falls into the dust falling space 3.

[0104] When the air guide plate 3036 is in the air guiding state, the air guide plate 3036 is controlled to rotate at a certain speed W to accelerate the air flow in the dust falling space 3 and form a negative pressure in the box 3031, so that as much dust as possible falls into the box 3031.

[0105] After one dust collection cycle T, the weight of the dust collection box assembly 303 is checked to see if it exceeds the preset value G1. If it does, the air conditioner indoor unit reminds the user to remove the dust collection box assembly 303 for cleaning. Otherwise, the filter screen 2 will reset after completing one dust collection cycle, and the air conditioner indoor unit will resume normal operation for cooling / heating / air supply.

[0106] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. It should be understood that the present invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A dust removal assembly, characterized by, The dust removal assembly (30) comprises: a dust removal cover plate (301) and a dust removal support (302), the dust removal cover plate (301) is in abutting fit with the dust removal support (302), a side rail (13) for allowing the filter screen (2) to move and a dust falling space (3) for allowing dust to fall are arranged between the dust removal cover plate (301) and the dust removal support (302), and the side rail (13) extends along the height direction of the dust removal assembly (30); a dust collecting box assembly (303) arranged at the bottom of the dust falling space (3), the dust collecting box assembly (303) comprises a box body (3031) and an air guide structure arranged on the box body (3031), the box body (3031) is in communication with the dust falling space (3) and is used for receiving the dust falling into the dust falling space (3), and the air guide structure is used for forming negative pressure inside the box body (3031).

2. The dust extraction assembly of claim 1, wherein, A filter structure (3035) is arranged in the box body (3031), the filter structure (3035) divides the inside of the box body (3031) into an upper space (3033) and a lower space (3034) in communication, an air inlet (3032) is arranged on the side of the box body (3031) close to the dust removal cover plate (301), the air inlet (3032) corresponds to the lower space (3034), and the air guide structure is arranged at the position of the box body (3031) corresponding to the air inlet (3032); When the air guide structure is in an air guide state, the airflow in the dust falling space (3) flows through the upper space (3033) and the lower space (3034) in sequence and then flows out of the box body (3031) through the air inlet (3032), so that negative pressure is formed inside the box body (3031).

3. The dust extraction assembly of claim 2, wherein, The air guide structure comprises an air guide plate (3036) and an air guide motor, the air guide plate (3036) is rotatably arranged at the air inlet (3032), and the air guide motor is connected with the air guide plate (3036); When the air guide structure is in the air guide state, the air guide motor drives the air guide plate (3036) to rotate.

4. The dust extraction assembly of claim 3, wherein, When the air guide structure is in a non-air guide state, the air guide motor drives the air guide plate (3036) to block the air inlet (3032).

5. The dust extraction assembly of claim 2, wherein, There are a plurality of air inlets (3032), the plurality of air inlets (3032) are arranged along the length direction and / or the height direction of the box body (3031), there are a plurality of air guide structures, and the plurality of air guide structures are arranged in one-to-one correspondence with the plurality of air inlets (3032).

6. The dust extraction assembly of claim 5, wherein, The plurality of air guide structures can be controlled to be in the air guide state at the same time or partially in the air guide state; The number of the plurality of air guide structures in the air guide state is determined according to the dust deposition degree of the filter screen.

7. The dust extraction assembly of claim 1, wherein, The side rail (13) is arranged on the dust removal support (302), the side rail (13) has a curved portion which is convex to the direction away from the dust removal cover plate (301), and the dust removal cover plate (301) and the dust removal support (302) form the dust falling space (3) which is wide in the middle and narrow at the upper and lower ends.

8. The dust extraction assembly of any one of claims 1-7, wherein, The dust removal support (302) comprises a support surface (3021) facing the dust removal cover plate (301), the dust removal cover plate (301) comprises a cover plate surface (3015) facing the dust removal support (302), the side rail (13) is arranged on the support surface (3021), and the cover plate surface (3015) is provided with a convex rib (3011), and the convex rib (3011) and the support surface (3021) define a limiting rail (3014).

9. The dust extraction assembly of claim 8, wherein, The dust removal assembly (30) comprises a cleaning mechanism, and the cleaning mechanism comprises: A brush assembly arranged at the top of the dust falling space (3), the brush assembly comprising a dust removal brush (304) and a brush motor driving the dust removal brush (304) to move, the dust removal brush (304) having an active cleaning position and a passive cleaning position when being driven by the brush motor to move; A brush cleaning structure arranged at a position of the dust removal cover plate corresponding to the passive cleaning position; The dust removal brush (304) can contact the surface of the filter screen in a moving state when moving to the active cleaning position to clean the filter screen, and the dust removal brush (304) can be self-cleaned through the brush cleaning structure when moving to the passive cleaning position.

10. The dust extraction assembly of claim 9, wherein, The brush cleaning structure comprises a cleaning tooth (3012) protruding from the dust removal cover plate (301), and the cleaning tooth (3012) and the dust removal brush (304) cooperate to realize self-cleaning of the dust removal brush (304).

11. An air conditioner indoor unit characterized by comprising: The air conditioner indoor unit comprises: A shell (10) formed with an air inlet (11), a top rail (12) extending along the width direction of the shell (10) being arranged at a position in the shell (10) corresponding to the air inlet (11), and the shell (10) comprising a front panel (16); An indoor heat exchanger (20) arranged in the shell (10) and used for heat exchange of air flow entering the shell (10) through the air inlet (11), and an installation space being formed between the indoor heat exchanger (20) and the front panel (16); The dust removal assembly according to any one of claims 1-10 is arranged in the installation space, and the dust removal support (302) is arranged close to the indoor heat exchanger (20), and the top rail (12) is connected with the side rail (13); A filter screen (2) movably arranged on a filter screen rail, the filter screen rail comprising the top rail (12) and the side rail (13), and the cleaning mechanism of the dust removal assembly (30) being used for cleaning the filter screen (2) when the filter screen (2) moves in the filter screen rail. A brush assembly arranged at the top of the dust falling space (3), the brush assembly comprising a dust removal brush (304) and a brush motor driving the dust removal brush (304) to move, the dust removal brush (304) having an active cleaning position and a passive cleaning position when being driven by the brush motor to move; A brush cleaning structure arranged at a position of the dust removal cover plate corresponding to the passive cleaning position; The dust removal brush (304) can contact the surface of the filter screen in amoving state when moving to the active cleaning position to clean the filter screen, and the dust removal brush 12.The indoor unit of the air conditioner of claim 11, characterized in that, The air conditioner indoor unit further comprises a humidity sensor and a control device, wherein the humidity sensor is configured to detect the humidity value of the environment where the filter screen (2) is located. The control device is configured to control the filter screen (2), the cleaning mechanism and the air guide structure according to the humidity value detected by the humidity sensor.

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