An automatic filter cleaning device for air conditioning terminal units

Abstract

This utility model discloses an automatic filter cleaning device for air conditioning terminal units. The device is installed inside the return air box of the air conditioning terminal unit, with a filter installed on the air inlet of the return air box. The device includes an air source distribution box, a rodless cylinder, a spring-shaped telescopic duct, and an air knife. Both the air source distribution box and the rodless cylinder are located inside the return air box. The air inlet of the air source distribution box is connected to an external air supply device, and the air outlet of the air source distribution box is connected to the air inlets of both the rodless cylinder and the spring-shaped telescopic duct. The air outlet of the spring-shaped telescopic duct is connected to the air inlet of the air knife. The air knife is mounted on the sliding end of the rodless cylinder, and its air outlet is strip-shaped and faces the inner surface of the filter. This cleaning device can clean the return air filter of the air conditioning terminal unit, achieving automated filter cleaning and eliminating the need for filter disassembly and cleaning, saving time and effort and improving the performance of the air conditioning unit.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioning air outlet unit cleaning equipment, and in particular to a filter cleaning device for air conditioning terminal units. Background Technology

[0002] Central air conditioning is widely used in facilities such as factories, shopping malls, and office buildings to regulate temperature and improve air quality. Except for special-purpose 100% fresh air conditioning systems, general central air conditioning systems, in order to improve energy efficiency, will recycle indoor air through air conditioning terminal units, filter it through the outlet air units, and cool it again for reuse. The purpose of doing this is twofold: first, to save energy consumption; and second, to cool exhaust gas quickly.

[0003] When recycling and utilizing the discharged low-temperature exhaust gas, indoor dust is also collected simultaneously. Especially in dusty environments like factories, dust can accumulate on the filters over time, significantly hindering air circulation. Therefore, frequent filter removal and replacement or cleaning is necessary. Currently, many central air conditioning units have concealed designs, using ceiling covers, making filter removal inconvenient and time-consuming. Therefore, there is an urgent need for an automatic filter cleaning device for air conditioning terminal units that eliminates the need for removal and improves efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a filter cleaning device for air conditioning terminal units, so as to solve the problem that it is very inconvenient to disassemble the filter of many central air conditioning air outlet units, and that disassembly and cleaning are also time-consuming and laborious.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A filter cleaning device for an air conditioning terminal unit is disclosed. The device is installed inside the return air box of the air conditioning terminal unit, and a filter is installed on the air inlet of the return air box. The device includes an air source distribution box, a rodless cylinder, a spring-shaped telescopic air duct, and an air knife. The air source distribution box and the rodless cylinder are both located inside the return air box. The air inlet of the air source distribution box is connected to an external air supply device, and the air outlet of the air source distribution box is connected to the air inlets of the rodless cylinder and the spring-shaped telescopic air duct. The air outlet of the spring-shaped telescopic air duct is connected to the air inlet of the air knife. The air knife is mounted on the sliding end of the rodless cylinder, and the air outlet of the air knife is strip-shaped and faces the inner surface of the filter.

[0007] A further technical solution is that the air knife has two air outlets in a Y-shape.

[0008] A further technical solution is that the air outlet of the air knife is a series of micro-holes arranged in multiple rows.

[0009] A further technical solution is that a sealing component is provided on the air outlet of the air knife.

[0010] A further technical solution is as follows: the sealing assembly includes a column, a rotating shaft, baffles, and a tension spring. The columns are symmetrically installed on the air outlet of the air knife. The two ends of the rotating shaft are rotatably installed on the two columns respectively. The two baffles are symmetrically arranged and rotatably connected to the rotating shaft. The two ends of the tension spring are respectively connected to the lower surfaces of the two baffles.

[0011] A further technical solution is that a rubber sleeve is fitted onto the baffle.

[0012] A further technical solution is that the baffle is a Z-shaped plate.

[0013] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0014] This invention proposes an automatic filter cleaning device for air conditioning terminal units. This device utilizes a reciprocating air blade to clean the return air filter of the air conditioning terminal unit, achieving automated filter cleaning and eliminating the need for filter disassembly and washing. It is extremely convenient and easy to operate, improving the performance of the air conditioning unit. Furthermore, this cleaning device is based on a pneumatic structure, avoiding the problem of mechanical interference and malfunction in dusty environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an automatic filter cleaning device for air conditioning terminal units according to the present invention.

[0016] Figure 2 This utility model Figure 1 A structural diagram from another perspective.

[0017] Figure 3 This utility model Figure 1 A structural diagram from a top-down perspective.

[0018] Figure 4 This utility model Figure 1 A schematic diagram of the structure of the stroke knife.

[0019] Figure 5 This utility model Figure 4 A schematic diagram of the structure of the central sealing component.

[0020] Reference numerals: 1. Air conditioning terminal unit; 2. Return air box; 3. Filter; 4. Air source distribution box; 5. Rodless cylinder; 6. Spring-type telescopic air duct; 7. Air knife; 8. Sealing assembly; 9. Column; 10. Rotating shaft; 11. Baffle; 12. Tension spring; 13. Rubber sleeve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] This implementation example Figure 1 , Figure 2 and Figure 3 As shown, an automatic filter cleaning device for an air conditioning terminal unit is provided. The device is installed in the return air box 2 of the air conditioning terminal unit 1. A filter 3 is installed on the air inlet of the return air box 2. The device includes an air source distribution box 4, a rodless cylinder 5, a spring-shaped telescopic air duct 6, and an air knife 7. The air source distribution box 4 and the rodless cylinder 5 are both installed in the return air box 2. The air inlet of the air source distribution box 4 is connected to an external air supply device. The air outlet of the air source distribution box 4 is connected to the air inlet of the rodless cylinder 5 and the spring-shaped telescopic air duct 6, respectively. The air outlet of the spring-shaped telescopic air duct 6 is connected to the air inlet of the air knife 7. The air knife 7 is installed on the sliding end of the rodless cylinder 5, and the air outlet of the air knife 7 is strip-shaped and faces the inner surface of the filter 3.

[0029] The rodless cylinder 5 is typically installed parallel to the filter screen 3. The air knife 7 is then mounted on the sliding end of the rodless cylinder 5. The air source distribution box 4 is connected to an existing compressed air source in the factory. Compressed air is supplied to both the rodless cylinder 5 and the air knife 7. Under the action of the compressed air, the rodless cylinder 5 moves the air knife 7 back and forth. The air knife 7 sprays compressed air towards the inner surface of the filter screen 3, blowing away the dust adsorbed on the surface (mainly the outer surface) of the filter screen 3. This achieves the effect of automatic filter cleaning without disassembling the filter screen.

[0030] The air knife 7 and the air source distribution box 4 are connected by a spring-shaped telescopic air pipe 6 because when the air knife 7 moves back and forth, the spring-shaped telescopic air pipe 6 can automatically extend and shorten, which can adapt to the position change of the air knife 7 and will not interfere with its movement.

[0031] Preferably, such as Figure 4 As shown, the air outlet 14 of the air knife 7 is two and arranged in a Y-shape.

[0032] The Y-shaped design allows air to flow out to both sides, primarily to prevent dead corners on both sides of filter 3 from being missed by the airflow. Furthermore, the dual airflow enhances the cleaning effect.

[0033] Preferably, the air outlet of the air knife is a series of micro-holes arranged in multiple rows.

[0034] While ensuring normal airflow and cleaning of filter 3, micro-pores can save air supply, but may reduce airflow size.

[0035] Example 2:

[0036] Based on the above embodiments, this embodiment, for example Figure 4 and Figure 5As shown, a sealing assembly 8 is provided on the air outlet of the air knife 7. The sealing assembly 8 includes a column 9, a rotating shaft 10, a baffle 11, and a tension spring 12. The columns 9 are symmetrically installed on the air outlet of the air knife 7. The two ends of the rotating shaft 10 are respectively rotatably installed on the two columns 9. The two baffles 11 are symmetrically arranged and are rotatably connected to the rotating shaft 10. The two ends of the tension spring 12 are respectively connected to the lower surface of the two baffles 11.

[0037] Generally, to greatly improve the cleaning effect of filter 3, compressed air is sprayed by the air knife 7 to clean dust when the air conditioner is off. Sometimes, when necessary, compressed air is also sprayed by the air knife 7 to clean dust while the air conditioner is running. During air conditioner operation, dust continuously moves towards the air outlet of the air knife 7 and can easily enter the air knife 7 and other components. Over time, it may adhere to or accumulate inside the components, affecting the performance. The sealing component 8 is used to seal the air outlet when the air knife 7 is not working to prevent the above problems.

[0038] Specifically, when the air knife 7 is venting air, the compressed airflow will overcome the tension of the tension spring 12, and the two baffles 11 will be blown out, allowing for normal airflow. When the compressed airflow decreases or stops, it cannot overcome the tension of the tension spring 12, and the two baffles 11 will reset, thus blocking the air outlet and preventing dust from entering the air knife 7.

[0039] Preferably, a rubber sleeve 13 is fitted onto the baffle 11.

[0040] The rubber sleeve 13 acts as a buffer, reduces noise, and ensures airtightness to the air outlet.

[0041] Preferably, the baffle 11 is a Z-shaped plate.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic filter cleaning device for an air conditioning terminal unit, the device being installed inside the return air box (2) of the air conditioning terminal unit (1), wherein a filter (3) is provided on the air inlet of the return air box (2), characterized in that: The device includes an air source distribution box (4), a rodless cylinder (5), a spring-shaped telescopic air duct (6), and an air knife (7). The air source distribution box (4) and the rodless cylinder (5) are both located in the return air box (2). The air inlet of the air source distribution box (4) is connected to an external air supply device. The air outlet of the air source distribution box (4) is connected to the air inlet of the rodless cylinder (5) and the spring-shaped telescopic air duct (6), respectively. The air outlet of the spring-shaped telescopic air duct (6) is connected to the air inlet of the air knife (7). The air knife (7) is installed on the sliding end of the rodless cylinder (5), and the air outlet of the air knife (7) is strip-shaped and faces the inner surface of the filter screen (3).

2. The automatic filter cleaning device for an air conditioner terminal unit according to claim 1, characterized in that: The air outlet (14) of the air knife (7) is two and Y-shaped.

3. The automatic filter cleaning device for an air conditioner terminal unit according to claim 1, characterized in that: The air outlet of the air knife consists of multiple rows and columns of micro-holes.

4. The automatic filter cleaning device for an air conditioner terminal unit according to claim 1, characterized in that: A sealing component (8) is provided on the air outlet of the air knife (7).

5. The automatic cleaning device for the filter screen of the air conditioner terminal unit according to claim 4, characterized in that: The sealing assembly (8) includes a column (9), a rotating shaft (10), a baffle (11), and a tension spring (12). The column (9) is symmetrically installed on the air outlet of the air knife (7). The two ends of the rotating shaft (10) are respectively rotatably installed on the two columns (9). The two baffles (11) are symmetrically arranged and are rotatably connected to the rotating shaft (10). The two ends of the tension spring (12) are respectively connected to the lower surface of the two baffles (11).

6. The automatic cleaning device for the filter screen of the air conditioner terminal unit according to claim 5, characterized in that: A rubber sleeve (13) is fitted onto the baffle (11).

7. The automatic cleaning device for the filter screen of the air conditioner terminal unit according to claim 5, characterized in that: The baffle (11) is a Z-shaped plate.

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