Air conditioner with filter screen cleaning function

Abstract

The utility model relates to the technical field of air conditioners, in particular to an air conditioner with a filter screen cleaning function, and aims to solve the problem that a filter screen of an existing air conditioner is difficult to clean automatically. In order to achieve the purpose, the air conditioner with the filter screen cleaning function comprises an air conditioner shell and a filter screen, the water inlet turbidity sensor is arranged on the water inlet pipeline, and the water inlet end of the water inlet pipeline is communicated with the water supply device; the spraying device is communicated with the water outlet end of the water inlet pipeline; the sewage tank is located below the spraying device in the first direction, the area between the spraying device and the sewage tank is a cleaning space, and at least one part of the filter screen is located in the cleaning space; the water inlet end of the drainage pipeline is communicated with the sewage tank, and an effluent turbidity sensor is arranged on the drainage pipeline. According to the air conditioner, the filter screen can be cleaned, the cleanliness of the filter screen can be accurately judged, and it is guaranteed that the filter screen is cleaned up.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, specifically providing an air conditioner with a filter cleaning function. Background Technology

[0002] Over time, dust accumulates on air conditioner filters, clogging them and affecting performance. Therefore, regular filter cleaning is necessary. Current technologies primarily focus on self-cleaning filters, mainly using water cleaning and dry brushing. Dry brushing requires the user to remove the dust collection tray for cleaning and is not fully automatic. Water cleaning methods require sophisticated water system configurations, especially in compact residential air conditioner indoor units, where feasible water cleaning device designs are lacking, and ensuring thorough filter cleaning is difficult.

[0003] Accordingly, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0004] This utility model aims to solve the aforementioned technical problem, namely, the difficulty of existing air conditioners in automatically cleaning their filters. To this end, this utility model provides an air conditioner with a filter cleaning function, including an air conditioner housing and a filter screen disposed within the housing. It also includes: a water inlet pipe with a water turbidity sensor installed on it, the inlet end of which is connected to a water supply device; a spray device connected to the outlet end of the water inlet pipe; a wastewater tank positioned below the spray device along a first direction, the area between the spray device and the wastewater tank serving as a cleaning space, with at least a portion of the filter screen located within this cleaning space; and a drain pipe with its inlet end connected to the wastewater tank, the drain pipe equipped with an outlet turbidity sensor.

[0005] In a specific embodiment of the air conditioner with filter cleaning function described above, the air conditioner further includes: a transmission device, which is disposed inside the air conditioner housing, and the filter is disposed on the transmission device. The transmission device is used to drive the filter to move cyclically along a circular path.

[0006] In a specific embodiment of the air conditioner with filter cleaning function described above, the transmission device includes: a first rotating shaft, which is rotatably disposed inside the air conditioner housing, and the axis of the first rotating shaft is parallel to the length direction of the filter; a second rotating shaft, which is rotatably disposed inside the air conditioner housing, and the axis of the second rotating shaft is parallel to the axis of the first rotating shaft and located on one side of the first rotating shaft along a second direction; the filter is surrounded on the outer surfaces of the first rotating shaft and the second rotating shaft, and the first rotating shaft and / or the second rotating shaft rotates to drive the filter to move cyclically.

[0007] In a specific embodiment of the air conditioner with filter cleaning function described above, a first protruding locking tooth is provided circumferentially on the outer surface of the first rotating shaft and / or the second rotating shaft; the filter includes a filter frame and a filter body, the filter frame is provided on both sides of the filter body along the length direction of the filter, and a second locking tooth is provided on the inner surface of the filter frame for engaging with the first locking tooth.

[0008] In a specific embodiment of the air conditioner with filter cleaning function described above, the wastewater tank is located between the first rotating shaft and the second rotating shaft along the second direction.

[0009] In a specific embodiment of the air conditioner with filter cleaning function described above, the bottom of the wastewater tank is inclined, and the bottom of the side near the water inlet pipe is higher than the bottom of the side near the drain pipe along a first direction.

[0010] In a specific embodiment of the air conditioner with filter cleaning function described above, a liquid level sensor is installed in the wastewater tank.

[0011] In a specific embodiment of the air conditioner with filter cleaning function described above, an inlet pump and an inlet valve are provided on the water inlet pipe; and a drain pump and a drain valve are provided on the drain pipe.

[0012] In the specific embodiment of the air conditioner with filter cleaning function described above, the water supply device is a condensate drip tray.

[0013] In a specific embodiment of the air conditioner with filter cleaning function described above, a plurality of spray heads are provided on the spray device along the length of the filter, and the water outlet direction of the spray heads is towards the filter.

[0014] With the above technical solution adopted, the inlet pipe in this utility model is used to supply water to the spray device, which sprays and cleans the filter screen. The cleaned wastewater collects in the wastewater tank and is then discharged through the drain pipe. The air conditioner in this utility model can complete the cleaning of the filter screen. In addition, the inlet turbidity sensor detects the turbidity of the water in the inlet pipe, and the outlet turbidity sensor detects the turbidity of the wastewater in the drain pipe. By calculation, the turbidity difference between the water in the inlet pipe and the outlet pipe is obtained. When the turbidity difference is within a certain range, it is determined that the filter screen is clean. The turbidity difference in this embodiment is more representative of the overall cleanliness of the filter screen, improving the reliability of the judgment result. Attached Figure Description

[0015] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the water inlet pipe in the air conditioner of this utility model;

[0017] Figure 2 This is a schematic diagram of the spray device in the air conditioner of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of an air conditioner of this utility model, showing the clean space and the liquid level sensor;

[0019] Figure 4 This is a schematic diagram of the overall structure of the air conditioner of this utility model.

[0020] In the diagram: 1. Air conditioner housing, 2. Filter screen, 3. Water inlet pipe, 4. Water inlet turbidity sensor, 5. Spray device, 6. Wastewater tank, 7. Cleaning space, 8. Drainage pipe, 9. Water outlet turbidity sensor, 10. Transmission device, 11. First rotating shaft, 12. Second rotating shaft, 13. First retaining tooth, 14. Filter screen frame, 15. Filter screen body, 16. Second retaining tooth, 17. Liquid level sensor, 18. Water inlet pump, 19. Water inlet valve, 20. Drain pump, 21. Drain valve, 22. Spray head. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0022] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the relevant device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, in order to more clearly demonstrate the core technical solution of this utility model, the description of the known structure of the air conditioner is omitted in the following description. However, this omission is only for the convenience of description and does not mean that the air conditioner can be without these structures.

[0025] like Figure 1-4 As shown, this utility model proposes an air conditioner with a filter cleaning function, including an air conditioner housing 1 and a filter 2 disposed inside the air conditioner housing 1, and further including: a water inlet pipe 3, on which a water inlet turbidity sensor 4 is disposed, and the water inlet end of the water inlet pipe 3 is connected to a water supply device; a spray device 5, on which the spray device 5 is connected to the water outlet end of the water inlet pipe 3; a sewage tank 6, which is disposed below the spray device 5 along a first direction, and the area between the spray device 5 and the sewage tank 6 is a cleaning space 7, and at least a portion of the filter 2 is located in the cleaning space 7; and a drain pipe 8, on which the water inlet end of the drain pipe 8 is connected to the sewage tank 6, and an outlet turbidity sensor 9 is disposed on the drain pipe 8.

[0026] In this embodiment, to solve the problem that existing air conditioners are difficult to automatically clean their filters, a filter cleaning device is set up. The device includes inlet and outlet water pipes and spray pipes. The inlet water pipe 3 is used to supply water to the spray device 5. The spray device 5 sprays and cleans the filter 2. The wastewater after cleaning is collected in the wastewater tank 6 and then discharged out through the drain pipe 8. When the filter is clean, the inlet water pipe 3 stops supplying water to the spray device 5 and waits for all the wastewater in the wastewater tank 6 to be discharged from the drain pipe 8.

[0027] Furthermore, to ensure that the filter screen is thoroughly cleaned with each cleaning cycle, this embodiment includes an inlet water turbidity sensor 4 on the inlet pipe 3 and an outlet water turbidity sensor 9 on the outlet pipe 8. When the inlet water pipe 3 supplies water to the spray device 5, the inlet water turbidity sensor 4 detects the turbidity of the water in the inlet water pipe 3. Similarly, when the outlet water pipe 8 discharges wastewater, the outlet water turbidity sensor 9 detects the turbidity of the wastewater in the outlet water pipe 8. By calculation, the turbidity difference between the water in the inlet water pipe 3 and the outlet water pipe 8 is obtained. When the turbidity difference is within a certain range, it is determined that the filter screen 2 is clean. Some existing technologies use light transmittance, pressure, etc., to determine the cleanliness of the filter screen during the cleaning process. However, these methods have limited sensor placement and can only infer the overall cleanliness of the filter screen based on the cleanliness of a small local area. The results are not accurate enough and lack parameters that can represent the overall cleanliness of the filter screen. Compared to these methods, the turbidity difference in this embodiment is more representative of the overall cleanliness of filter 2, thus improving the reliability of the judgment results.

[0028] In addition, the inlet end of the water inlet pipe 3 is connected to the water supply device, which can be the water-saving pan of the air conditioner's condensate or an external water source. Different water sources will affect the turbidity of the water in the water inlet pipe 3, and thus affect the turbidity of the water in the drain pipe 8. In this embodiment, the turbidity difference is used to determine the cleanliness of the filter screen, which eliminates the influence of different water sources on the determination of the cleanliness of the filter screen 2, corrects the measurement results, and enables the air conditioner in this embodiment to accurately determine the cleanliness of the filter screen regardless of what kind of water is used for cleaning, ensuring that the filter screen 2 is cleaned.

[0029] Furthermore, due to the large area of ​​the filter screen, in order to reduce the size of the cleaning device, the spraying area of ​​the spraying device 5 is generally not made to be the same as the area of ​​the filter screen 2. This means that only a portion of the filter screen 2 is located within the cleaning space 7. If the position of the filter screen 2 does not move, the remaining portion will not move into the cleaning space 7 for cleaning, thus preventing the filter screen 2 from being thoroughly cleaned. Figure 1 and Figure 3 As shown, in order to thoroughly clean the filter 2, the air conditioner also includes a transmission device 10, which is installed inside the air conditioner housing 1. The filter 2 is mounted on the transmission device 10, and the transmission device 10 drives the filter 2 to move cyclically along a circular path. When the transmission device 10 drives the filter 2 to move cyclically, the portion that is not initially in the cleaning space 7 will also pass through the cleaning space 7 along the circular path and be cleaned, thus achieving the purpose of cleaning the entire filter 2. The transmission device 10 drives the filter 2 to move cyclically, allowing the filter 2 to pass through the cleaning space 7 multiple times, enabling the filter 2 to undergo multiple spray cleaning processes, thereby improving the cleaning effect.

[0030] The transmission device 10 can take many forms. For example, the transmission device 10 can be a rotating shaft, with the filter screen 2 surrounding the outer surface of the rotating shaft. After the rotating shaft rotates, it drives the filter screen 2 to rotate synchronously, so that the filter screen 2 can be thoroughly cleaned. The filter screen 2 is cleaned a different number of times as the rotating shaft rotates.

[0031] Furthermore, such as Figure 1 and Figure 3As shown, to avoid the transmission device 10 occupying too much space, the transmission device 10 includes: a first rotating shaft 11, which is rotatably disposed inside the air conditioner housing 1, and the axis of the first rotating shaft 11 is parallel to the length direction of the filter screen 2; a second rotating shaft 12, which is rotatably disposed inside the air conditioner housing 1, and the axis of the second rotating shaft 12 is parallel to the axis of the first rotating shaft 11, located on one side of the first rotating shaft 11 along the second direction; the filter screen 2 surrounds the outer surfaces of the first rotating shaft 11 and the second rotating shaft 12. After the first rotating shaft 11 and / or the second rotating shaft 12 rotate, they drive the filter screen 2 to move cyclically, so that the filter screen 2 passes through the cleaning space 7 multiple times for cleaning. In the figure, X represents the length direction of the filter screen 2, Z represents the first direction (vertical direction), and Y represents the second direction (generally, the second direction is horizontal direction).

[0032] The transmission device also includes a drive motor (not shown in the figure). The drive motor is used to drive the first rotating shaft 11 and / or the second rotating shaft 12 to rotate. The number of drive motors can be adjusted according to the actual situation. Only one drive motor can be set to drive the first rotating shaft 11 to rotate, or two drive motors can be set to drive the first rotating shaft 11 and the second rotating shaft 12 to rotate synchronously, or four drive motors can be set at both ends of the first rotating shaft 11 and the second rotating shaft 12 to drive the first rotating shaft 11 and the second rotating shaft 12 to rotate synchronously.

[0033] It should be pointed out that, Figure 1 and Figure 3 The distance between the first rotating shaft 11 and the second rotating shaft 12 in the second direction is only an example. Without departing from the basic principle of this utility model, those skilled in the art can adjust the distance between the first rotating shaft 11 and the second rotating shaft 12 in the second direction.

[0034] Furthermore, such as Figure 1 and Figure 3 As shown, in order to prevent slippage and misalignment between the filter screen 2 and the first rotating shaft 11 and / or the second rotating shaft 12, a protruding first locking tooth 13 is provided on the outer surface of the first rotating shaft 11 and / or the second rotating shaft 12 along the circumferential direction; the filter screen 2 includes a filter screen frame 14 and a filter screen body 15. The filter screen frame 14 is provided on both sides of the filter screen body 15 along the length direction of the filter screen 2. A second locking tooth 16 is provided on the inner surface of the filter screen frame 14 for meshing with the first locking tooth 13.

[0035] Furthermore, such as Figure 3As shown, since the filter screen 2 surrounds the outer surface of the first rotating shaft 11 and the second rotating shaft 12 to form a closed ring, there are two positions below the spray device 5 where the sewage tank 6 can be placed. The first position is where the sewage tank 6 is placed below the entire filter screen 2. However, in this case, the sewage from the upper layer of the filter screen in the ring will drip onto the lower layer of the filter screen, causing repeated pollution and making cleaning difficult. Therefore, the sewage tank 6 is positioned in the second direction between the first rotating shaft 11 and the second rotating shaft 12. The sewage tank 6 is located between the upper and lower layers of the ring filter screen, and the sewage after spraying falls directly into the sewage tank 6 to avoid repeated pollution.

[0036] Furthermore, in order to facilitate the discharge of sewage from the sewage tank 6, the bottom of the sewage tank 6 is tilted, with the bottom on the side near the inlet pipe 3 being higher than the bottom on the side near the drain pipe 8 along the first direction, so that the sewage will flow smoothly into the drain pipe 8 under the action of gravity.

[0037] Furthermore, such as Figure 2 As shown, the water inlet pipe 3 is equipped with a water inlet pump 18 and a water inlet valve 19, which are used to control the flow rate and pressure of the spray device 5; the drain pipe 8 is equipped with a drain pump 20 and a drain valve 21.

[0038] Furthermore, such as Figure 3 As shown, a liquid level sensor 17 is installed inside the sewage tank 6. When the liquid level in the sewage tank 6 reaches a certain height h1, the drain pump 20 and drain valve 21 are opened to pump the water in the sewage tank 6 into the drain pipe 8 for discharge. After cleaning, the inlet pipe 3 is closed first, while the drain pipe 8 remains open until the reading of the liquid level sensor 17 is less than h2, indicating that there is very little liquid remaining in the sewage tank 6 and drainage is no longer necessary. Then, the drain pump 20 and drain valve 21 of the drain pipe 8 are closed.

[0039] Furthermore, since the cleanliness of the filter screen 2 is determined by the turbidity difference in this embodiment, and is not affected by the turbidity of the water in the inlet pipe 3, the water supply device (not shown in the figure) in this embodiment can be a condensate drip tray or a water pipe connected by the user, etc.

[0040] Furthermore, such as Figure 2 As shown, a number of spray heads 22 are arranged on the spray device 5 along the length of the filter screen 2, and the water outlet direction of the spray heads 22 is towards the filter screen 2.

[0041] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0042] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An air conditioner with a filter cleaning function, comprising an air conditioner housing (1) and a filter (2) disposed within the air conditioner housing (1), characterized in that, Also includes: Water inlet pipe (3), on which a water inlet turbidity sensor (4) is installed, and the water inlet end of the water inlet pipe (3) is connected to the water supply device; Spraying device (5), the spraying device (5) is connected to the outlet end of the water inlet pipe (3); Wastewater tank (6), the wastewater tank (6) is located below the spray device (5) along the first direction, the area between the spray device (5) and the wastewater tank (6) is a cleaning space (7), and at least a portion of the filter screen (2) is located in the cleaning space (7); Drainage pipe (8), the inlet end of the drainage pipe (8) is connected to the sewage tank (6), and an outlet turbidity sensor (9) is installed on the drainage pipe (8).

2. The air conditioner having a filter cleaning function according to claim 1, wherein, The air conditioner also includes: A transmission device (10) is disposed inside the air conditioner housing (1), and a filter screen (2) is disposed on the transmission device (10). The transmission device (10) is used to drive the filter screen (2) to move cyclically along a circular path.

3. The air conditioner having a filter cleaning function according to claim 2, wherein The transmission device (10) includes: A first rotating shaft (11) is rotatably disposed inside the air conditioner housing (1), and the axis of the first rotating shaft (11) is parallel to the length direction of the filter screen (2). The second rotating shaft (12) is rotatably disposed inside the air conditioner housing (1). The axis of the second rotating shaft (12) is parallel to the axis of the first rotating shaft (11) and is located on one side of the first rotating shaft (11) along the second direction. The filter screen (2) surrounds the outer surfaces of the first rotating shaft (11) and the second rotating shaft (12). After the first rotating shaft (11) and / or the second rotating shaft (12) rotate, the filter screen (2) moves cyclically.

4. The air conditioner with filter cleaning function according to claim 3, characterized in that, The outer surfaces of the first rotating shaft (11) and / or the second rotating shaft (12) are provided with protruding first retaining teeth (13) along the circumferential direction; The filter (2) includes a filter frame (14) and a filter body (15). The filter frame (14) is arranged on both sides of the filter body (15) along the length direction of the filter (2). A second tooth (16) is provided on the inner surface of the filter frame (14) for engaging with the first tooth (13).

5. The air conditioner with filter cleaning function according to claim 3, characterized in that, The sewage tank (6) is located between the first rotating shaft (11) and the second rotating shaft (12) along the second direction.

6. The air conditioner with filter cleaning function according to claim 1, characterized in that, The bottom of the sewage tank (6) is inclined, and the bottom of the side near the water inlet pipe (3) is higher than the bottom of the side near the drain pipe (8) along the first direction.

7. The air conditioner with filter cleaning function according to claim 1, characterized in that, A liquid level sensor (17) is installed inside the sewage tank (6).

8. The air conditioner with filter cleaning function according to claim 1, characterized in that, The water inlet pipe (3) is equipped with a water inlet pump (18) and a water inlet valve (19); The drainage pipe (8) is equipped with a drainage pump (20) and a drainage valve (21).

9. The air conditioner with filter cleaning function according to claim 1, characterized in that, The water supply device is a condensate drip tray.

10. The air conditioner with filter cleaning function according to claim 1, characterized in that, The spray device (5) has a plurality of spray heads (22) arranged along the length of the filter screen (2), and the water outlet direction of the spray heads (22) is towards the filter screen (2).

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