Air conditioner indoor unit and filter screen cleaning method

Abstract

The invention relates to an air conditioner indoor unit and a filter screen cleaning method, and belongs to the technical field of air conditioners, and the air conditioner indoor unit comprises a machine shell and a filter screen cleaning device, the indoor heat exchanger is used for conducting heat exchange on airflow entering the machine shell, and an installation space is formed between the indoor heat exchanger and the front panel; the dust removal assembly is arranged in the mounting space, and a side rail extending in the height direction of the machine shell is arranged in the dust removal assembly; the filter screen is movably arranged in the filter screen channel; the cleaning mechanism comprises a filter screen flushing assembly, the filter screen flushing assembly comprises a barrel, a connecting rail is formed on the outer circumferential surface of the barrel, a filter screen channel is formed by a top rail, the connecting rail and a side rail, and water spraying holes of the barrel are communicated with an inner cavity of the barrel; when water is supplied to the cylinder body, the water in the cylinder body can be sprayed out through the water spraying holes to wash the filter screen. Viscous dust on the surface of the filter screen is thoroughly cleaned through the filter screen flushing assembly, and the cleaning effect on the filter screen is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to a method for cleaning an indoor air conditioner unit and its filter. Background Technology

[0002] After prolonged use, dust accumulates on the air filter of an air conditioner's indoor unit. If not cleaned regularly, this can clog the filter mesh, hindering airflow and reducing the effective air intake area. This leads to increased energy consumption and significantly impacts cooling and heating performance. Furthermore, excessive dust accumulation on the filter surface can breed bacteria, causing secondary air pollution and affecting indoor air quality. Currently, the common method for cleaning filters is manual disassembly and washing, which requires reinstallation, a time-consuming and inconvenient process.

[0003] In related technologies, an automatic cleaning mechanism is installed in the indoor unit of an air conditioner to clean the filter. However, this automatic cleaning mechanism relies on a brush to remove dust, and the brush is not easy to clean the dust that has a certain stickiness, so the cleaning effect is not ideal. Summary of the Invention

[0004] To overcome the problem of unsatisfactory cleaning results caused by cleaning the filter screen with a brush in related technologies, the first aspect of the present invention proposes an air conditioner indoor unit, the air conditioner indoor unit comprising:

[0005] 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;

[0006] 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.

[0007] A dust removal assembly is provided within the installation space. The dust removal assembly has a side rail extending along the height direction of the housing, and the side rail is connected to the top rail.

[0008] A filter screen is movably disposed in a filter screen channel, the filter screen channel including a side track and a top track;

[0009] A cleaning mechanism is provided inside the housing. The cleaning mechanism includes a filter washing assembly, which includes a cylinder. The cylinder is located between the top track and the side track. A connecting track is formed on the outer periphery of the cylinder. The top track, the connecting track, and the side track communicate to form the filter channel. A water spray hole is provided on the cylinder wall, and the water spray hole communicates with the inner cavity of the cylinder.

[0010] When water is supplied to the cylinder, the water inside the cylinder can be sprayed out through the spray hole to rinse the filter screen which is in a moving state.

[0011] According to this embodiment of the air conditioner indoor unit, the filter washing assembly enables the spraying of high-pressure water onto the filter screen. Dust adhering to the filter screen is detached under the action of the high-pressure water flow, improving the cleaning effect. Furthermore, by cleverly combining the filter washing process with the cylinder connecting the filter track and the top track, the filter screen can be washed from the back side, making it easier to remove dust. The structure is simple, the production cost is low, and it is suitable for mass production.

[0012] In some embodiments, the cylinder is fixed between the top track and the side track, and the outer peripheral surface of the cylinder has a connecting arc surface that connects with the top track and the side track, and the water spray hole is located on the connecting arc surface.

[0013] According to this embodiment of the air conditioner indoor unit, by setting the water spray holes on the connecting arc surface, the number of water spray holes can be reduced while ensuring the rinsing effect on the filter screen, thus avoiding water sprayed from the cylinder from spraying onto positions outside the filter screen and saving water.

[0014] In some embodiments, there are multiple water spray holes, which are arranged along the length and / or circumferential direction of the connecting arc surface.

[0015] According to this embodiment of the air conditioner indoor unit, by arranging multiple water spray holes along the length direction and / or circumferential direction of the connecting arc surface, the filter screen can be thoroughly rinsed and cleaned along its length, ensuring a cleaning effect.

[0016] In some embodiments, the cylinder has rotatable gears at both ends in the axial direction, and the filter screen has teeth that mesh with the gears. The filter screen can be driven to move in the filter screen channel when the gears rotate.

[0017] According to this embodiment, the air conditioner indoor unit moves the filter screen by meshing the teeth of a rotating gear with the filter screen. The structure is simple and highly reliable. Furthermore, by combining the gear with the cylinder, the water spray holes on the cylinder can rinse the filter screen in all directions along the width of the filter screen, ensuring the rinsing effect.

[0018] In some embodiments, the filter washing assembly further includes a water supply device, which includes a water tank and a water pump. The water tank is connected to the inner cavity of the cylinder, and the water pump is disposed in the water tank for pumping water from the water tank into the cylinder.

[0019] According to this embodiment, the indoor unit of the air conditioner supplies water to the cylinder by placing the water supply device inside the casing, eliminating the need to connect the cylinder to an external water supply pipe, thus improving the flexibility of the installation scenario for the indoor unit of the air conditioner.

[0020] In some embodiments, the water tank is connected to a water receiving tray located at the bottom of the indoor heat exchanger.

[0021] According to this embodiment, the indoor unit of the air conditioner can recycle and reuse the condensate generated by the indoor heat exchanger by connecting the water tank and the water tray, thus saving energy. At the same time, the water in the water tank can also be discharged from the outdoor heat exchanger through the water tray, reducing the need for drainage pipes.

[0022] In some embodiments, the water supply device further includes a water quality detection module, which is disposed in the water tank and used to detect the water quality in the water tank;

[0023] The indoor unit of the air conditioner also includes a control device configured to determine whether to control the water tank to drain based on the water quality detected by the water quality detection module.

[0024] According to this embodiment, the indoor unit of the air conditioner detects the water quality in the water tank through a water quality detection module, and determines whether to control the water tank to drain based on the detected water quality results, thereby ensuring that the water quality of the filter washing water is within a better range and avoiding affecting the indoor air quality.

[0025] In some embodiments, the cleaning mechanism further includes a brush assembly, and the brush assembly and the filter washing assembly are designed to clean the filter in a moving state simultaneously or sequentially.

[0026] According to this embodiment of the air conditioner indoor unit, by combining brush cleaning with rinsing cleaning, the sticky dust on the surface of the filter screen is thoroughly cleaned, thereby further improving the cleaning effect of the filter screen.

[0027] In some embodiments, the brush assembly is disposed within the dust removal assembly and is positioned opposite to the cylinder to clean the filter screen in contact with the cylinder. The brush assembly includes a dust removal brush and a brush motor that drives the dust removal brush to rotate. When the dust removal brush is driven to rotate by the brush motor, it has an active cleaning position and a passive cleaning position.

[0028] When the dust removal brush rotates to the active cleaning position, it can contact the surface of the filter screen in the moving state to clean the surface of the filter screen. The water sprayed from the water spray hole at least covers the part of the filter screen that is in contact with the dust removal brush. When the dust removal brush rotates to the passive cleaning position, it can perform self-cleaning.

[0029] According to the indoor unit of the air conditioner of this embodiment, the dust removal brush can not only clean the filter screen, but also achieve self-cleaning, thereby reducing the frequency of cleaning the brush assembly by the user. The water sprayed from the water spray hole covers the part of the filter screen that comes into contact with the dust removal brush, which can further ensure double cleaning.

[0030] In some embodiments, the passive cleaning position includes a first passive cleaning position, wherein water sprayed from the water spray hole cleans the dust removal brush when the dust removal brush rotates to the first passive cleaning position;

[0031] And / or, the passive cleaning position includes a second passive cleaning position, and the dust removal component is provided with cleaning teeth at the position corresponding to the second passive cleaning position. When the dust removal brush rotates to the second passive cleaning position, the cleaning teeth cooperate with the dust removal brush to clean the dust removal brush.

[0032] According to this embodiment of the air conditioner indoor unit, by rinsing the dust removal brush in the first passive cleaning position, the dust adhering to the dust removal brush can be washed away. At the same time, by cleaning the cleaning teeth with the rotating dust removal brush, the fine dust on the dust removal brush can be further cleaned.

[0033] In some embodiments, the dust removal assembly includes:

[0034] The dust removal cover and the dust removal bracket are mated together in the width direction of the casing, and the dust removal bracket is located close to the indoor heat exchanger. The side rail is located on the dust removal bracket, and a dust falling space is formed between the dust removal cover and the dust removal bracket.

[0035] A sludge collection box is located at the bottom of the dust falling space and is connected to the dust falling space. It is used to collect dirt falling from the dust falling space. The sludge collection box is connected to a water receiving tray located at the bottom of the indoor heat exchanger, and the wastewater in the sludge collection box can flow into the water receiving tray.

[0036] According to this embodiment, the indoor unit of the air conditioner forms a wastewater discharge space between the dust removal bracket and the dust removal cover, allowing the cleaning water to fall during filter washing. The sludge collection box located at the bottom of the wastewater discharge space collects the wastewater falling from the wastewater discharge space, and the collected wastewater flows into the water receiving tray and is finally discharged from the drain outlet of the water receiving tray into the indoor unit of the air conditioner, reducing the need for drainage pipes. In addition, the dust removal bracket prevents dust from entering the indoor heat exchanger, avoiding dust contamination of the indoor heat exchanger.

[0037] In some embodiments, the top track extends along the width direction of the housing, and the side track extends along the height direction of the housing;

[0038] The side track has a curved section that protrudes toward the heat exchanger, and a dust collection space that is wide in the middle and narrow at both ends is formed between the dust collection cover and the dust collection bracket.

[0039] According to this embodiment of the air conditioner indoor unit, by providing a curved section, the distance between the dust removal cover and the dust removal bracket can be increased, and a dust falling space with a wide middle section and narrow top and bottom ends is formed between the dust removal cover and the dust removal bracket, which facilitates the collection of dust.

[0040] A second aspect of the present invention provides a method for cleaning the filter of an air conditioner indoor unit, the filter cleaning method being applied to the air conditioner indoor unit of the first aspect of the present invention, the filter cleaning method comprising:

[0041] During the filter cleaning process, the filter is controlled to first move from the top track to the side track, and then from the side track back to the top track;

[0042] As the filter moves from the side track to the top track, water inside the cylinder is controlled to be sprayed out through the spray holes to clean the filter.

[0043] The third aspect of this invention provides a method for cleaning the filter of an air conditioner indoor unit, wherein the filter cleaning method is applied to the air conditioner indoor unit of the first aspect of this invention.

[0044] During the filter cleaning process, the filter is controlled to first move from the top track to the side track, and then from the side track back to the top track;

[0045] As the filter moves from the side track to the top track, the filter washing assembly and the brush assembly are controlled to clean the filter simultaneously or sequentially.

[0046] The technical effects achieved by the second and third aspects mentioned above are similar to those achieved by the corresponding technical means in the first aspect, and will not be repeated here.

[0047] It is understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0049] Figure 1 This is a cross-sectional view of an indoor air conditioning unit according to an exemplary embodiment.

[0050] Figure 2This is one of the structural diagrams of an indoor air conditioning unit according to an exemplary embodiment (with the top cover removed).

[0051] Figure 3 This is a diagram showing the location of the water tray and indoor heat exchanger of an air conditioner indoor unit according to an exemplary embodiment.

[0052] Figure 4 This is a partial view of an indoor air conditioning unit according to an exemplary embodiment (the filter is in the filtering position and the dust removal brush is in the active cleaning position).

[0053] Figure 5 This is a partial view of an indoor air conditioning unit according to an exemplary embodiment (the filter is in the dust removal position and the dust removal brush is in the first passive cleaning position).

[0054] Figure 6 This is a positional diagram of a dust removal assembly and an air inlet grille according to an exemplary embodiment.

[0055] Figure 7 This is a schematic diagram of the assembly of the cylinder and the gear according to an exemplary embodiment.

[0056] Figure 8 This is a schematic diagram of the structure of a cylindrical body according to an exemplary embodiment.

[0057] Figure 9 This is a schematic diagram of the structure of a water supply device according to an exemplary embodiment.

[0058] Figure 10 This is a schematic diagram of the structure of a sludge collection box according to an exemplary embodiment.

[0059] Figure 11 This is a structural diagram of a dust removal bracket according to an exemplary embodiment.

[0060] Figure 12 This is a structural diagram of a dust removal cover according to an exemplary embodiment.

[0061] Figure 13 This is a partially enlarged view of the dust removal brush of an air conditioner indoor unit in the active cleaning position, according to an exemplary embodiment.

[0062] Figure 14 This is a partially enlarged view of the dust removal brush of an air conditioner indoor unit in a first passive cleaning position, according to an exemplary embodiment.

[0063] Figure 15 This is a partially enlarged view of the dust removal brush of an air conditioner indoor unit in the second passive cleaning position, according to an exemplary embodiment.

[0064] Figure 16This is one of the flowcharts illustrating the filter cleaning process of an indoor air conditioning unit according to an exemplary embodiment.

[0065] Figure 17 This is the second flowchart illustrating the filter cleaning process of an indoor air conditioning unit according to an exemplary embodiment.

[0066] Figure 18 This is a flowchart illustrating the filter cleaning process for an indoor air conditioning unit, based on a specific example.

[0067] The attached figures are labeled as follows: Wherein:

[0068] 10. Housing; 11. Air inlet; 12. Top rail; 13. Side rail; 14. Air outlet; 15. Connecting rail; 16. Front panel; 17. Decorative cover; 18. Bottom shell; 2. Filter screen; 21. Tooth; 20. Indoor heat exchanger; 3. Dust falling space; 30. Dust removal assembly; 301. Dust removal cover; 3011. Rib; 3012. Cleaning tooth; 30121. First cleaning tooth; 30122. Second cleaning tooth; 3013. Limiting rib; 3015. Cover surface; 302. Dust removal support Frame; 3021, Support surface; 303, Sludge collection box; 3031, Drainage trough; 304, Dust removal brush; 401, Cylinder; 4011, Spray nozzle; 4012, Water injection hole; 4013, Gear; 50, Cross-flow fan; 60, Dust detection module; 70, Air inlet grille; 80, Water receiving tray; 801, Drain outlet; 90, Water supply device; 901, Water tank; 9011, Water outlet; 9012, Water passage; 902, Water injection pipe; 903, Water pump; 904, Water quality detection module; 905, Water storage tank. Detailed Implementation

[0069] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers 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 the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0070] In related technologies, relying on brushes for dust removal during automatic filter cleaning fails to effectively remove sticky dust from the filter, resulting in poor cleaning performance. To address this issue, this embodiment proposes an indoor air conditioning unit. The indoor unit has a top track extending along the width of the casing on the air inlet side and a side track extending along the height of the casing on the front panel side, with the top track and side track connected. The filter is movably disposed within a filter channel including the top track and side track. The indoor air conditioning unit also includes a cleaning mechanism housed within the casing. This cleaning mechanism includes a filter washing assembly, which comprises a cylinder disposed between the top track and the side track. A connecting track is formed on the outer periphery of the cylinder (401). The top track, the connecting track, and the side track are connected to form the filter channel. Water spray holes are provided on the cylinder wall, communicating with the inner cavity of the cylinder. When water is supplied to the cylinder, water inside the cylinder can be sprayed out through the water spray holes to wash the moving filter.

[0071] This embodiment cleverly combines filter washing with a cylinder that connects the filter track and the top track, enabling the filter to be washed from the back side (i.e., the side opposite to the air inlet), making it easier to wash off the dust adhering to the filter. Furthermore, the cylinder is placed in the space between the top track and the side track, allowing for a reasonable layout of the internal space of the air conditioner indoor unit without increasing its size. The structure is simple, the production cost is low, and it is easy to mass-produce.

[0072] 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.

[0073] Implementation Method 1

[0074] This embodiment proposes an indoor air conditioner unit, which can be a wall-mounted unit 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.

[0075] like Figures 1-6 As shown, the indoor unit of the air conditioner includes a casing 10, an indoor heat exchanger 20, a dust removal assembly 30, and a filter 2. The casing 10 has an air inlet 11 and an air outlet 14. A top track 12 extending along the width of the casing 10 is provided at a position corresponding to the air inlet 11. For example,... Figure 6As shown, an air inlet grille 70 is provided at the air inlet 11, and a top track 12 is formed in the air inlet grille 70. The casing 10 includes a front panel 16, and an indoor heat exchanger 20 is disposed inside the casing 10 for heat exchange of 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. A cross-flow fan 50 is also provided inside the casing 10. The indoor heat exchanger 20 is located in the airflow path between the cross-flow fan 50 and the air inlet 11. When the cross-flow fan 50 is running, it discharges the airflow that has been heat-exchanged by the indoor heat exchanger 20 from the air outlet 14.

[0076] A dust removal assembly 30 is disposed within the installation space. The dust removal assembly 30 has a side track 13 extending along the height direction of the housing 10, and the side track 13 communicates with the top track 12. A filter screen 2 is movably disposed in a filter channel, which includes the side track 13 and the top track 12. The filter screen 2 has a filtration position located within the top track 12 and a dust removal position located within the side track 13.

[0077] In a preferred embodiment, there are multiple top tracks 12, which are spaced apart along the length of the air inlet 11. The multiple top tracks 12 are corresponding one-to-one with the multiple side tracks 13 of the dust removal assembly 30. The top tracks 12 extend along the width of the housing 10, and the side tracks 13 extend along the height of the housing 10. The top tracks 12 and the side tracks 13 are directly connected or connected by connecting tracks 15.

[0078] <Filter Washing Assembly>

[0079] like Figure 1 , Figure 4 , Figure 5 , Figures 7-9 As shown, the indoor unit of the air conditioner also includes a cleaning mechanism disposed within the casing 10. The cleaning mechanism includes a filter washing assembly, which includes a cylinder 401. The cylinder 401 is disposed between the top track 12 and the side track 13. A connecting track 15 is formed on the outer periphery of the cylinder 401. The top track 12, the connecting track 15, and the side track 13 are connected to form a filter channel. A water spray hole 4011 is provided on the cylinder wall of the cylinder 401. The water spray hole 4011 is connected to the inner cavity of the cylinder 401. When water is supplied to the cylinder 401, the water inside the cylinder 401 can be sprayed out through the water spray hole 4011 to wash the filter 2 which is in a moving state. In addition, the water spray hole 4011 sprays high-pressure water jets onto the filter 2 to wash away the sticky dust on the filter surface, thereby achieving a thorough cleaning of the filter 2.

[0080] The cylinder body is also equipped with a water inlet 4012, through which an external pipeline can supply water to the inner cavity of the cylinder body 401. The location of the water inlet 4012 is not limited; for example, it can be located on the side of the cylinder body 401 opposite to the filter screen 2. During the movement of the filter screen 2 within the filter channel, the filter screen 2 can be in close contact with the cylinder body 401 or at a predetermined distance, allowing for flexible design as needed. Furthermore, during the movement of the filter screen 2 within the filter channel, the cylinder body 401 can rotate with the filter screen 2 or remain stationary.

[0081] In a preferred embodiment, the cylinder 401 is fixed between the top track 12 and the side track 13. The outer circumferential surface of the cylinder 401 has a connecting arc surface that connects with the top track 12 and the side track 13. Water spray holes 4011 are located on the connecting arc surface to reduce the number of water spray holes 4011 in the cylinder 401, preventing water sprayed from the cylinder 401 from hitting areas outside the filter screen 2 and saving water. Preferably, there are multiple water spray holes 4011, arranged along the length and / or circumferential direction of the connecting arc surface, enabling comprehensive cleaning of the filter screen along its length and ensuring cleaning effectiveness.

[0082] The filter washing assembly of this embodiment can spray high-pressure water jets onto the filter screen 2, causing dust adhering to the filter screen 2 to detach under the action of the high-pressure water jet, thus improving the cleaning effect of the filter screen 2. Furthermore, by combining the filter washing and cleaning with the cylinder 401, the filter screen 2 can be washed from the back side, i.e., the side opposite to the air inlet 11, making it easier to wash off the dust attached to the filter screen 2. In addition, the cylinder 401 is located in the space between the top track 12 and the side track 13, which makes reasonable layout of the internal space of the air conditioner indoor unit without increasing the size of the air conditioner indoor unit.

[0083] In some implementations, such as Figures 13-15 As shown, the indoor unit of the air conditioner also includes a filter drive device, which includes a gear 4013 and a gear motor that drives the gear 4013 to rotate. The gear 4013 is located at both ends in the axial direction of the cylinder 401. The filter screen 2 is provided with teeth 21 that mesh with the gear 4013. When the gear 4013 rotates, the filter screen 2 can be driven to move in the filter channel. It should be noted that the filter screen 2 is only provided with teeth 21 at the positions where it meshes with the teeth of the cylinder 401, and not 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. Furthermore, a portion of the filter screen 2 is always meshed with the gear 4013 when it moves, thereby improving the stability of the filter screen 2 when it moves.

[0084] This embodiment achieves the movement of the filter screen 2 by meshing the rotating gear 4013 with the teeth 21 of the filter screen 2. The structure is simple and highly reliable. By combining the gear 4013 with the cylinder 401, the water spray holes 4011 on the cylinder 401 can rinse the filter screen 2 in all directions along the width of the filter screen 2, ensuring the rinsing effect.

[0085] In this embodiment, the movement of the filter screen 2 is not limited to the meshing of the gear 4013 with the teeth 21 of the filter screen 2, and the rotation of the gear 4013 is achieved. In other possible ways, the filter screen 2 can also be moved in the form of a roller and wound onto the roller under the action of the rotating roller. In the direction in which the filter screen moves from the top track 12 to the side track 13, the cylinder 401 is located upstream of the roller.

[0086] In some embodiments, the filter washing assembly further includes a water supply device 90, which includes a water tank 901 and a water pump 903. The water tank 901 is connected to the inner cavity of the cylinder 401, and the water tank 901 is provided with a water outlet 9011, which is connected to the water inlet 4012 of the cylinder 401 through a water inlet pipe 902. The water pump 903 is disposed in the water tank 901 and is used to pump water from the water tank 901 into the cylinder 401.

[0087] The water in the water tank 901 can come from an external water supply, such as by the user directly filling the water tank 901, or by connecting the water tank 901 to the user's tap water pipe and filling the water tank 901 with tap water.

[0088] In a preferred embodiment, such as Figure 2 As shown, the bottom of the indoor heat exchanger 20 is provided with a water collection tray 80, and the water tank 901 is connected to the water collection tray 80. This allows the condensate collected in the water collection tray 80 to be pumped into the water tank 901 by the water pump 903, and / or water of poor quality that has been stored in the water tank 901 for a long time can flow into the water collection tray 80 and be discharged from the indoor unit of the air conditioner through the drain outlet 801 of the water collection tray 80. For example, as... Figure 2 As shown, a water storage tank 905 is provided between the water tank 901 and the water receiving tray 80. The condensate collected in the water receiving tray 80 is collected in the water storage tank 905. The water tank 901 includes a water outlet 9012, which is connected to the water storage tank 905 through a connecting pipe. Under the action of the water inlet pump 903, the water in the water storage tank 905 is pumped into the water tank 901 through the connecting pipe.

[0089] For details, please refer to... Figure 2 and Figure 3The indoor heat exchanger 20 is multi-folded, and the drip tray 80 is located at the bottom of the indoor heat exchanger 20. The drip tray 80 has a drain outlet 801, and condensate is discharged outdoors through a drain pipe connected to the drain outlet 801. The surface of the drip tray 80 has a certain slope design, with the side near the drain outlet 801 being relatively lower. This design allows condensate to flow naturally to the drain outlet 801, preventing it from accumulating in the drip tray 80. The drip tray 80 forms a water storage tank 905, where the condensate collected in the drip tray 80 can be collected. The flow direction of the condensate in the drip tray 80 is as follows: Figure 8 The direction indicated by the arrow.

[0090] Preferred, such as Figure 2 As shown, the water storage tank 905 is located at one end of the axial direction of the cross-flow fan 50, and the drain outlet 801 is located at the other end of the axial direction of the cross-flow fan 50. The water tank 901 is located close to the water storage tank 905. The water tank 901 includes a water inlet 9012, which is connected to the water storage tank 905 through a connecting pipe. Under the action of the water pump, the condensate in the water storage tank 905 is pumped into the water tank 901 through the connecting pipe.

[0091] This embodiment connects the water tank 901 with the water collection tray 80, thereby enabling the recycling of condensate generated by the indoor heat exchanger 20, saving energy. At the same time, the water in the water tank 901 can also be discharged to the outdoor heat exchanger through the water collection tray 80, reducing the need for drainage pipes.

[0092] In this embodiment, the water in the water tank 901 can be sourced from either an external water supply or internal condensate, or a combination of both. The design can be flexible and tailored to specific needs.

[0093] In a preferred embodiment, such as Figure 9 As shown, the water supply device 90 also includes a water quality detection module 904, which is installed in the water tank 901 and used to detect the water quality in the water tank 901. The indoor unit of the air conditioner also includes a control device, which is configured to determine whether to control the water tank 901 to drain water based on the water quality detected by the water quality detection module 904.

[0094] In this embodiment, when the water quality detection module 904 detects that the water quality in the water tank 901 is lower than the set value T0, it indicates that the water quality is poor and there are many bacteria in the water. If the poor-quality water is used to spray the filter screen 2, the bacteria in the water will adhere to the filter screen 2. When the filter screen 2 filters the airflow entering the indoor heat exchanger 20 from the air inlet 11, the bacteria on the filter screen 2 will enter the indoor unit of the air conditioner with the airflow and be blown into the room, thereby reducing the indoor air quality. Therefore, when the water quality in the water tank 901 is detected to be lower than the set value T0, the water tank 901 needs to be drained. The water tank 901 can be drained directly into the indoor heat exchanger 20 through an external drain pipe, or it can be drained into the water tray 80 through the water outlet 9012 and discharged into the indoor unit of the air conditioner through the drain outlet 801 of the water tray 80. When the water quality in the water tank 901 is detected to be greater than or equal to the set value T0, it indicates that the water quality in the water tank 901 is good and can be directly used to rinse the filter screen 2.

[0095] This embodiment uses a water quality detection module 904 to detect the water quality in the water tank 901 and determines whether the water tank 901 should drain water based on the detected water quality results, thereby ensuring that the water quality of the filter screen 2 rinsing water is within a better range and avoiding affecting the indoor air quality.

[0096] <Brush Components>

[0097] like Figure 1 , Figure 4 , Figure 5 , Figures 13-15 As shown, the cleaning mechanism also includes a brush assembly that brushes away surface dust from the filter screen 2. The brush assembly and the filter screen rinsing assembly are designed to clean the filter screen 2 simultaneously or sequentially while it is in motion. In one example, during the filter screen cleaning process, surface dust on the filter screen 2 is first brushed away by the brush assembly, and then the filter screen rinsing assembly rinses the filter screen 2 after the brush assembly has finished cleaning. Alternatively, the filter screen rinsing assembly can first rinse away sticky dust from the filter screen 2, and then the dust removal brush 304 can brush away impurities from the surface of the filter screen 2. In another example, while the brush assembly removes dust from the surface of the filter screen 2, the filter screen rinsing assembly sprays a high-pressure water jet onto the filter screen 2.

[0098] This embodiment combines brush cleaning with rinsing cleaning to thoroughly clean the sticky dust on the surface of the filter screen 2, thereby improving the cleaning effect of the filter screen 2.

[0099] Furthermore, the brush assembly is disposed within the dust removal assembly 30 and is positioned opposite the cylinder 401 to clean the filter screen 2 that contacts the cylinder 401. The cylinder 401 provides support to the filter screen 2 during the cleaning process, ensuring the cleaning effect of the brush assembly. The brush assembly includes a dust removal brush 304 and a brush motor that drives the dust removal brush 304 to rotate. When driven to rotate by the brush motor, the dust removal brush 304 has an active cleaning position and a passive cleaning position. When the dust removal brush 304 rotates to the active cleaning position, it can contact the surface of the moving filter screen 2 to clean the surface of the filter screen 2. The water sprayed from the water spray hole 4011 at least covers the position of the filter screen in contact with the dust removal brush 304. When the dust removal brush 304 rotates to the passive cleaning position, it can perform self-cleaning.

[0100] The dust removal brush 304 of this embodiment can not only clean the filter screen 2, but also self-clean, thereby reducing the frequency of cleaning the brush assembly and improving the user experience.

[0101] In one example, the passive cleaning position includes a first passive cleaning position, where water sprayed from the water nozzle 4011 cleans the dust removal brush 304 when it rotates to the first passive cleaning position;

[0102] In another example, the passive cleaning position includes a second passive cleaning position. The dust removal component 30 is equipped with cleaning teeth 3012 at the position corresponding to the second passive cleaning position. When the dust removal brush 304 rotates to the second passive cleaning position, the cleaning teeth 3012 cooperate with the dust removal brush 304 to clean it. The cooperation between the cleaning teeth 3012 and the dust removal brush 304 can be a scraping contact or a vibration contact, thereby achieving self-cleaning of the dust removal brush 304.

[0103] Preferred, such as Figures 12-15 As shown, the cleaning teeth 3012 include a first cleaning tooth 30121 and a second cleaning tooth 30122 protruding from the cover plate surface 3015. The first cleaning tooth 30121 and the second cleaning tooth 30122 have different protrusion heights, allowing for cleaning of different depths of the dust removal brush 304 using cleaning teeth 3012 with varying protrusion heights. When the dust removal brush 304 rotates to the second passive cleaning position, it contacts the first cleaning tooth 30121 and the second cleaning tooth 30122. This embodiment, by setting cleaning teeth 3012 with different protrusion heights, ensures the self-cleaning effect of the dust removal brush 304 and extends its service life, avoiding the problems of reduced bristle life and incomplete cleaning caused by using cleaning teeth 3012 of the same length.

[0104] In this embodiment, the self-cleaning method of the dust removal brush 304 can be achieved by rinsing the dust removal brush 304 with the filter washing component to remove the dust adhering to the dust removal brush 304, or by the dust removal brush 304 cooperating with the cleaning teeth 3012 to achieve self-cleaning of the dust removal brush 304, or by combining the two self-cleaning methods. The design can be flexibly made after comprehensive consideration of various factors such as the self-cleaning effect of the dust removal brush 304, production cost, and process production difficulty.

[0105] Furthermore, such as Figures 13-15 As shown, the dust removal assembly 30 is also provided with a limiting rib 3013, which is used to limit the dust removal brush 304 when it rotates to the active cleaning position and the passive cleaning position.

[0106] <Dust removal component 30>

[0107] like Figure 1 , Figure 4 , Figure 5 , Figures 10-12 As shown, the dust removal assembly 30 includes a dust removal cover 301 and a dust removal bracket 302. The dust removal cover 301 and the dust removal bracket 302 are mated together in the width direction of the indoor unit of the air conditioner, and the dust removal bracket 302 is located close to the indoor heat exchanger 20. The side rail 13 is located on the dust removal bracket 302. 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 rail 13. The filter screen 2 is cleaned by the cleaning mechanism within the side rail 13, and the dust generated during the cleaning process enters the dust falling space 3. Furthermore, cleaning teeth 3012 for self-cleaning the dust removal brush 304 and limiting ribs 3013 for limiting the position of the dust removal brush 304 are both located on the dust removal cover 301.

[0108] 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, cross-flow fan 50, and indoor environment.

[0109] In this embodiment, the dust removal cover 301 and the dust removal bracket 302 are detachably connected, and the dust removal module is set in a relatively docking form to facilitate the assembly and maintenance of the dust removal component 30.

[0110] A dust collection space 3 is formed between the dust collection cover 301 and the dust collection bracket 302, with openings at both the top and bottom. The dust collection assembly 30 also includes a dirt collection box 303, located at the bottom of the dust collection space 3. The top of the dirt collection box 303 has a collection port, which is at least partially opposite to the bottom opening of the dust collection space 3 to communicate with it. The dirt collection box 303 is used to collect dirt that falls into the dust collection space 3 during the cleaning of the filter screen 2. The dirt includes dust that falls into the dust collection space 3 when the brush assembly cleans the surface of the filter screen 2, and dirty water generated when the filter screen washing assembly washes the filter screen 2.

[0111] In one example, the bottom of the dust removal bracket 302 protrudes from the dust removal cover plate 301 and has an installation cavity. The sludge collection box 303 is detachably installed in the installation cavity, and the upper part of the sludge collection box 303 is engaged with the bottom of the dust removal cover plate 301 by a snap fastener, so that the user can remove the sludge collection box 303 from the installation cavity to clean the dust collected in the sludge collection box 303, and assemble and fix the sludge collection box 303 into the installation cavity.

[0112] In a preferred embodiment, such as Figure 1 , Figure 4 , Figure 5 As shown, the top track 12 extends along the width direction of the casing 10, and the side track 13 extends along the height direction of the casing 10. The side track 13 has a curved portion that protrudes towards the heat exchanger 20 to fully utilize the space between the indoor heat exchanger 20 and the front panel 16, avoiding excessive thickness of the entire unit. In this embodiment, the curved portion increases the distance between the dust removal cover 301 and the dust collector, forming a dust falling space 3 that is wide in the middle and narrow at both ends between the dust removal cover 301 and the dust collector support 302, facilitating dust collection.

[0113] In some implementations, such as Figure 1 As shown, the sludge collection box 303 is connected to the water receiving tray 80, and the water in the sludge collection box 303 can flow into the water receiving tray 80 and finally be discharged from the drain outlet 801 of the water receiving tray 80. In a preferred embodiment, as... Figure 1 and Figure 10 As shown, the sludge collection box 303 has a drainage groove 3031 on the side near the drain outlet 801 of the water receiving tray 80. The drainage groove 3031 is connected to the water receiving tray 80, and the bottom wall of the sludge collection box 303 slopes from top to bottom towards the water receiving tray 80 so that the water in the sludge collection box 303 can be smoothly drained from the drainage groove 3031 into the water receiving tray 80. For example, the angle between the bottom wall of the drainage groove 3031 and the horizontal plane is α, and the range of α is greater than or equal to 1°.

[0114] In some implementations, such as Figure 11As shown, the dust removal bracket 302 includes a bracket surface 3021 facing the dust removal cover plate 301, and the dust removal cover plate 301 includes a cover surface 3015 facing the dust removal 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 removal bracket 302 and the bracket surface 3021, allowing the filter screen 2 to move.

[0115] like Figure 12 As shown, the cover surface 3015 has a protruding rib 3011. The shape of the rib 3011 is adapted to the curvature of the side track 13. When the dust removal cover 301 and the dust removal 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 removal bracket 302, so as to define a limiting track for the movement of the filter screen 2. When the filter screen 2 moves to the position of the side track 13, at least a portion of the filter screen 2 in the length direction of the indoor unit is located within the side track 13 and at least a portion is located within the limiting track. Preferably, as Figure 12 As shown, multiple protruding ribs 3011 are provided along the length of the cover plate surface 3015, and multiple limiting tracks are defined between the protruding ends of the multiple protruding ribs 3011 and the support surface 3021 of the dust removal bracket 302.

[0116] In this embodiment, a limiting track is defined between the rib 3011 and the support surface 3021 of the dust removal bracket 302 to limit the movement position of the filter screen 2 in the side track 13, so as to prevent the filter screen 2 from arching and deforming during movement in the side track 13, which would lead to increased running resistance or even jamming during operation.

[0117] Furthermore, such as Figure 1 , Figure 4 , Figure 5 , Figures 13-15 As shown, the cylinder 401 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 cylinder 401, providing installation space for the cylinder 401. The indoor unit also includes a decorative cover 17, which covers the portion of the dust removal bracket 302 corresponding to the cylinder 401, ensuring the overall consistency and aesthetics of the indoor unit's appearance. A connecting rail 15 defines a connection between the dust removal bracket 302 and the cylinder 401, with the top rail 12 and the side rail 13 connected via the connecting rail 15. A dust removal brush 304 is positioned within the dust removal assembly 30 at the position corresponding to the cylinder 401.

[0118] In this embodiment, the dust removal assembly 30 forms a dust falling space 3 between the dust removal bracket 302 and the dust removal cover plate 301, allowing dust and cleaning water during filter washing to fall. The sludge collection box 303 located at the bottom of the dust falling space 3 collects the dust and cleaning water falling from the dust falling space 3. The collected sludge flows into the water receiving tray 80 and is finally discharged from the air conditioner indoor unit through the drain outlet 801 of the water receiving tray 80. In addition, the dust removal bracket 302 prevents dust from entering the indoor heat exchanger, thus avoiding dust contamination of the indoor heat exchanger 20.

[0119] <Control Device>

[0120] In this embodiment, during the cleaning process of the air conditioner indoor unit, the control device controls the movement of the filter 2 within the filter channel. To prevent the dust swept off the filter 2 from causing secondary contamination, the filter 2 is first moved from the top track 12 to the side track 13, and then moved from the side track 13 back to the top track 12. During the movement of the filter 2 from the side track 13 to the top track 12, the cleaning mechanism cleans the filter 2 until it is completely returned to the top track 12, thus completing one cleaning cycle. Furthermore, when the filter 2 is heavily dusty, multiple cleaning cycles can be performed to achieve a thorough cleaning.

[0121] When the dust removal brush 304 has both 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 and contact the filter screen 2. During the movement of the filter screen 2, the brush cleans the filter screen 2. Simultaneously, the filter screen washing assembly sprays high-pressure water onto the filter screen 2 to wash away the dust adhering to it. After the filter screen 2 returns to its original position, the cleaning effect of the filter screen 2 is determined by the dust detection module 60 located at the air inlet 11. The dust detection module 60 can determine the cleaning effect of the filter screen 2 by detecting the airflow rate at the air inlet 11, or by detecting the light transmittance of the filter screen 2, or by detecting the dust thickness on the filter screen 2.

[0122] After cleaning the filter 2, the control device also controls the dust removal brush 304 to move to the passive cleaning position and perform self-cleaning in the passive cleaning position. For example, first, the dust removal brush 304 is controlled to move to the first passive cleaning position, and the filter washing assembly washes the dust removal brush 304. Then, the dust removal brush 304 is controlled to move to the second passive cleaning position, and the cleaning teeth 3012 cooperate with the rotating dust removal brush 304 to clean the dust removal brush 304.

[0123] In addition, to ensure the cleaning effect of the dust removal brush 304 on the filter screen 2, a heating device is provided at the position corresponding to the dust removal brush 304 in the indoor unit of the air conditioner. After the dust removal brush 304 completes self-cleaning, the dust removal brush 304 is heated to remove the moisture from the dust removal brush 304. Alternatively, the dust removal brush 304 is heated while it is in the second cleaning position and is engaged with the cleaning teeth 3012 to accelerate the removal of moisture from the dust removal brush 304.

[0124] Implementation Method 2

[0125] This embodiment proposes a method for cleaning the filter of an air conditioner indoor unit. The filter cleaning method is applied to the air conditioner indoor unit of Embodiment 1, with reference to... Figure 16 The filter cleaning flowchart shown below illustrates the filter cleaning method, which includes the following steps:

[0126] S161. During the filter cleaning process, the filter 2 is controlled to move from the top track 12 to the side track 13, and then from the side track 13 back to the top track 12.

[0127] S162. As the filter screen 2 moves from the side track 13 to the top track 12, the water in the control cylinder 401 is sprayed out through the spray hole 4011 to clean the filter screen 2.

[0128] In this embodiment, the filter 2 cleaning process can be initiated based on a user-issued filter 2 cleaning control command, or it can be automatically initiated after a set cumulative operating time of the indoor unit. Alternatively, it can be automatically initiated by checking the dust accumulation on the filter 2. During the filter cleaning process, the filter 2 is first moved from the moving track to the side track 13, and then from the side track 13 to the top track 12. While the filter 2 is moving from the side track 13 to the top track 12, water in the cylinder 401 is sprayed out through the spray holes 4011 to clean the filter 2, ensuring that the cleaned portion of the filter 2 directly enters the top track 12, preventing secondary contamination of the cleaned area during subsequent filter cleaning processes.

[0129] Implementation Method 3

[0130] This embodiment proposes a method for cleaning the filter of an air conditioner indoor unit. The filter cleaning method is applied to the air conditioner indoor unit of Embodiment 1, with reference to... Figure 17 The filter cleaning flowchart shown below illustrates the filter cleaning method, which includes the following steps:

[0131] S171. During the filter cleaning process, the filter 2 is controlled to move from the top track 12 to the side track 13, and then from the side track 13 back to the top track 12.

[0132] S172. During the process of the filter screen 2 moving from the side track 13 to the top track 12, the filter screen washing assembly and the brush assembly are controlled to clean the filter screen 2 simultaneously or sequentially.

[0133] In this embodiment, the filter 2 cleaning process can be initiated based on a user-issued filter 2 cleaning control command, or it can be automatically initiated after a set cumulative operating time of the indoor air conditioning unit. Alternatively, it can be automatically initiated by checking the dust accumulation on the filter 2. During the filter cleaning process, the filter 2 is first moved from the moving track to the side track 13, and then from the side track 13 to the top track 12. While the filter 2 is moving from the side track 13 to the top track 12, water in the cylinder 401 is sprayed out through the spray nozzles 4011 to clean the filter 2. And / or the dust removal brush 304 is rotated to the active cleaning position to clean the filter 2. In the specific filter cleaning process, the filter washing assembly and the brush assembly can be controlled to clean the filter 2 sequentially or simultaneously, depending on the degree of dirt on the filter 2, to improve the cleaning effect.

[0134] When using a brush assembly to clean the filter screen, after the cleaning process of the filter screen 2 is completed, the dust removal brush 304 is controlled to move to the passive cleaning position. In the active cleaning position, the dust removal brush 304 cooperates with the moving filter screen 2 to remove the dust on the surface of the filter screen 2. After the cleaning process of the filter screen 2 is completed, the filter screen 2 is in the filtering position. The dust removal brush 304 moves to the passive cleaning position to achieve self-cleaning of the dust removal brush 304, ensuring the cleaning effect of the dust removal brush 304 on the filter screen 2 in the next filter screen cleaning process.

[0135] In this embodiment, during the filter cleaning process, by controlling the movement position and direction of the filter 2 and the position of the dust removal brush 304, the high-pressure water sprayed from the water spray hole 4011 of the cylinder 401 removes the dust adhering to the filter 2. The dust then adheres to the dust removal brush 304 under its action. By controlling the movement of the dust removal brush 304 to a passive cleaning position, the dust adhering to the brush 304 is cleaned, ensuring the cleaning effect of the brush 304. Furthermore, by testing the water quality in the water tank 901, the water quality for rinsing the filter 2 is ensured to be within an optimal range, guaranteeing the air quality of the indoor environment.

[0136] The technical solution of this embodiment will be described in detail below with reference to a specific example.

[0137] Combination Figures 1-15 A structural diagram of the indoor unit of the air conditioner and Figure 18The flowchart shown illustrates the filter cleaning process of the indoor air conditioning unit. In this embodiment, the indoor air conditioning unit has an air inlet grille 70 at the air inlet 11, with a top track 12. A dust removal assembly 30 is located in the installation space between the front panel 16 and the indoor heat exchanger 20. The dust removal assembly 30 includes a dust removal cover 301 and a dust removal bracket 302, which are interlocked. A dust falling space 3 is formed between the dust removal cover 301 and the dust removal bracket 302. A side track 13 is provided within the dust falling space 3, and the top track 12 is connected to the side track 13. A filter channel is formed. The cylinder 401 is located between the top track 12 and the side track 13. The filter screen 2 has teeth 21 at both ends in the width direction. The teeth 21 cooperate with the gears 4013 at both ends in the axial direction of the cylinder 401. The gears 4013 rotate under the driving force of the gear motor, thereby driving the filter screen 2 to move between the top track 12 and the side track 13. During the movement, the filter screen 2 passes over the cylinder 401. A water injection hole 4012 is provided at one end in the axial direction of the cylinder 401. A water spray hole 4011 is provided on the arc section of the cylinder 401 opposite to the filter screen 2.

[0138] The brush assembly is located at the top of the dust falling space 3 and is positioned opposite the cylinder 401. The brush assembly includes a dust-removing brush 304, a brush motor, and a brush support. The dust-removing brush 304 is mounted on the brush support. The brush motor is connected to the dust-removing brush 304 to drive its movement. The dust-removing brush 304 can move in two positions: an active cleaning position, a first passive cleaning position, and a second passive cleaning position. When the dust-removing brush 304 is in the active cleaning position, it contacts the filter screen 2 and cleans the filter screen 2 as it moves. When the dust-removing brush 304 is in the first passive cleaning position, the filter screen rinsing assembly rinses the dust-removing brush 304. When the dust-removing brush 304 is in the second passive cleaning position, the cleaning teeth 3012 on the dust removal cover 301 cooperate with the rotating dust-removing brush 304 to further clean it.

[0139] A dust collection box 303, connected to the bottom of the dust collection space 3, is provided, and a drain trough 3031 is provided at the bottom of the dust collection box 303. The water supply device 90 includes a water tank 901, a water pump 903, and a water quality detection module 904. The water tank 901 is connected to the water inlet 4012 of the cylinder 401 through a water inlet pipe 902. The water tank 901 is also connected to a water receiving tray 80 located below the indoor heat exchanger 20. The condensate collected in the water receiving tray 80 can enter the water tank 901, and the water in the water tank 901 can also enter the water receiving tray 80 and be discharged through the drain outlet 801 of the water receiving tray 80. A dust detection module 60 for detecting the cleanliness of the dust on the surface of the filter screen 2 is provided near the air inlet 11.

[0140] During the filter cleaning process, the water quality detection module 904 detects the cleanliness of the pre-stored water in the water tank 901. If the cleanliness is lower than the set value T0, it indicates that the water has been stored for a long time and is not suitable for cleaning the filter 2. The water tank 901 is then controlled to drain water into the drip tray 80 and completely discharged from the drain outlet 801 of the drip tray 80 to the indoor unit of the air conditioner. Then, the water tank 901 is refilled. The water source for the water tank 901 can be the condensate collected in the drip tray 80, i.e., by controlling the air conditioner to turn on the cooling mode to collect the condensate. Alternatively, water can be added to the water tank 901 by connecting an external water pipe.

[0141] When the water level in the water tank 901 reaches the set level, and the water quality detected by the water quality detection module 904 is not lower than the set value T0, the brush assembly, driven by the motor, moves the dust removal brush 304 away from the surface of the filter screen 2. Figure 5 At the position shown, gear 4013 meshes with the teeth 21 on both sides of filter screen 2. Driven by the gear motor, filter screen 2 rotates counterclockwise in the filter channel, thus moving forward to the designated position. Figure 5 The position is shown. Then, driven by the motor, the brush assembly brings the dust removal brush 304 close to the surface of the filter screen 2, as shown. Figure 4 At the indicated position, water pump 903 starts working, injecting water from water tank 901 into cylinder 401 through water injection pipe 902. Simultaneously, gear 4013 meshes with the teeth on both sides of filter screen 2, causing filter screen 2 to rotate clockwise (i.e., move backward) within the filter screen channel under the drive of the gear motor. High-pressure water washes away dust from the surface of filter screen 2 through spray holes 4011 on the surface of cylinder 401. At the same time, dust removal brush 304 cleans filter screen 2, adhering dust to its surface, until filter screen 2 moves to the indicated position. Figure 4 The filter positions are shown.

[0142] Driven by a motor, the brush assembly moves the dust removal brush 304 to a position where... Figure 14 As shown in the first passive cleaning position, high-pressure water washes away dust from the surface of the dust removal brush 304 through the spray holes 4011 on the surface of the cylinder 401. After the set washing time is reached, the water pump 903 stops operating. The washed water flows into the water receiving tray 80 of the bottom shell 18 through the drain trough 3031 at the bottom of the dirt collection box 303, and is discharged outside the machine through the drain pipe connected to the drain outlet 801. To ensure smooth drainage and prevent dust from clogging the drain outlet 801, as shown... Figure 10 As shown, the bottom wall of the sludge collection box 303 is made into an inclined surface with an angle α of not less than 1° between the inclined surface and the horizontal plane.

[0143] Driven by the brush motor, the brush assembly moves the dust removal brush 304 to a position such that... Figure 15In the second passive cleaning position shown, the dust removal brush 304 and cleaning teeth 3012 perform further dust cleaning. The dust detection module 60 detects the dust thickness on the surface of the filter screen 2 at this time. When the dust thickness is ≥ preset H, it indicates that the cleaning degree is not enough and another round of cleaning is required until the dust thickness is less than preset H, at which point the dust removal ends.

[0144] Other embodiments of the 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 invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein.

[0145] It should be understood that the present invention is not limited to the precise structure 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 invention is limited only by the appended claims.

Claims

1. An indoor unit for an air conditioner, characterized in that, The indoor unit of the air conditioner includes: A housing (10) having an air inlet (11) is provided in the housing (10) at a position corresponding to the air inlet (11), and a top track (12) extending along the width direction of the housing (10) is provided. The housing (10) includes a front panel (16). An indoor heat exchanger (20) is disposed inside the housing (10) and is used to exchange heat with the airflow entering the housing (10) through the air inlet (11). An installation space is formed between the indoor heat exchanger (20) and the front panel (16). A dust removal assembly (30) is provided in the installation space. The dust removal assembly (30) is provided with a side rail (13) extending along the height direction of the housing (10). The side rail (13) is connected to the top rail (12). A filter screen (2) is movably disposed in a filter screen channel, the filter screen channel including a side track (13) and a top track (12); A cleaning mechanism is provided inside the housing (10). The cleaning mechanism includes a filter washing assembly, which includes a cylinder (401). The cylinder (401) is located between the top track (12) and the side track (13). A connecting track (15) is formed on the outer periphery of the cylinder (401). The top track (12), the connecting track (15), and the side track (13) are connected to form the filter channel. A water spray hole (4011) is provided on the cylinder wall of the cylinder (401). The water spray hole (4011) is connected to the inner cavity of the cylinder (401). When water is supplied to the cylinder (401), the water inside the cylinder (401) can be sprayed out through the spray hole (4011) to rinse the filter screen (2) which is in a moving state.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The cylinder is fixed between the top track (12) and the side track (13). The outer circumferential surface of the cylinder (401) has a connecting arc surface that connects with the top track (12) and the side track (13). The water spray hole (4011) is located on the connecting arc surface.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, There are multiple water spray holes, and the multiple water spray holes (4011) are arranged along the length direction and / or circumferential direction of the connecting arc surface.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, The cylinder (401) has rotatable gears (4013) at both ends in the axial direction. The filter screen (2) has teeth (21) that mesh with the gears (4013). The filter screen (2) can be driven to move in the filter screen channel when the gears (4013) rotate.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The filter washing assembly also includes a water supply device (90), which includes a water tank (901) and a water pump (903). The water tank (901) is connected to the inner cavity of the cylinder (401), and the water pump (903) is located in the water tank (901) to pump water from the water tank (901) into the cylinder (401).

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The water tank (901) is connected to the water receiving tray (80) located at the bottom of the indoor heat exchanger (20).

7. The indoor unit of the air conditioner according to claim 5, characterized in that, The water supply device (90) further includes a water quality detection module (904), which is installed in the water tank (901) and is used to detect the water quality in the water tank (901); The indoor unit of the air conditioner also includes a control device configured to control the drainage of the water tank (901) based on the water quality detected by the water quality detection module (904).

8. The indoor unit of the air conditioner according to claim 1, characterized in that, The cleaning mechanism also includes a brush assembly, and the brush assembly and the filter washing assembly are designed to clean the filter (2) in a moving state simultaneously or sequentially.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, The brush assembly is disposed inside the dust removal assembly (30) and is arranged opposite to the cylinder (401) to clean the filter screen (2) in contact with the cylinder (401). The brush assembly includes a dust removal brush (304) and a brush motor that drives the dust removal brush (304) to rotate. When the dust removal brush (304) is driven to rotate by the brush motor, it has an active cleaning position and a passive cleaning position. When the dust removal brush (304) rotates to the active cleaning position, it can contact the surface of the filter screen (2) in the moving state to clean the surface of the filter screen (2). The water sprayed from the water spray hole (4011) at least covers the position of the filter screen that is in contact with the dust removal brush (304). When the dust removal brush (304) rotates to the passive cleaning position, it can perform self-cleaning.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The passive cleaning position includes a first passive cleaning position, where water sprayed from the water nozzle (4011) cleans the dust removal brush (304) when the dust removal brush (304) rotates to the first passive cleaning position; And / or, the passive cleaning position includes a second passive cleaning position, and the dust removal component (30) is provided with cleaning teeth (3012) at the position corresponding to the second passive cleaning position. The cleaning teeth (3012) cooperate with the dust removal brush (304) to clean the dust removal brush (304) when the dust removal brush (304) rotates to the second passive cleaning position.

11. The indoor unit of an air conditioner according to any one of claims 1-10, characterized in that, The dust removal assembly (30) includes: A dust removal cover (301) and a dust removal bracket (302) are provided. The dust removal cover (301) and the dust removal bracket (302) are mated together in the width direction of the casing (10). The dust removal bracket (302) is located close to the indoor heat exchanger (20). The side rail (13) is provided on the dust removal bracket (302). A dust falling space (3) is formed between the dust removal cover (301) and the dust removal bracket (302). A sludge collection box (303) is located at the bottom of the dust falling space (3) and communicates with the dust falling space (3). It is used to collect dirt falling from the dust falling space (3). The sludge collection box (303) is communicated with a water receiving tray (80) located at the bottom of the indoor heat exchanger. The sewage in the sludge collection box (303) can flow into the water receiving tray (80).

12. The indoor unit of the air conditioner according to claim 11, characterized in that, The top track (12) extends along the width direction of the housing (10), and the side track (13) extends along the height direction of the housing (10). The side track (13) has a curved section that protrudes toward the heat exchanger (20), and a dust collection space (3) that is wide in the middle and narrow at both ends is formed between the dust collection cover (301) and the dust collection bracket (302).

13. A method for cleaning the filter of an indoor air conditioner unit, characterized in that, The filter cleaning method is applied to the indoor unit of the air conditioner according to any one of claims 1-12, and the filter cleaning method includes: During the filter cleaning process, the filter (2) is controlled to move first from the top track (12) to the side track (13), and then from the side track (13) to the top track (12); As the filter screen (2) moves from the side track (13) to the top track (12), water inside the cylinder (401) is controlled to be sprayed out through the spray hole (4011) to clean the filter screen (2).

14. A method for cleaning the filter of an indoor air conditioner unit, characterized in that, The filter cleaning method is applied to the indoor unit of the air conditioner according to any one of claims 8-10, characterized in that... During the filter cleaning process, the filter (2) is controlled to move first from the top track (12) to the side track (13), and then from the side track (13) to the top track (12); During the movement of the filter screen (2) from the side track (13) to the top track (12), the filter screen washing assembly and the brush assembly are controlled to clean the filter screen (2) simultaneously or sequentially.

Images