Self-cleaning device for return air inlet of central air conditioner

Abstract

The utility model discloses a central air conditioner return air inlet self-cleaning device, and particularly relates to the technical field of air conditioner cleaning, the central air conditioner return air inlet self-cleaning device comprises a return air inlet body, the bottom of the return air inlet body is connected with a return air inlet panel, the bottom of the return air inlet body is connected with a fixing sleeve in a penetrating mode, and the bottom of the fixing sleeve is connected with a frame. A negative pressure cover is connected to the outer side of the frame, a plurality of banister brushes are transversely connected to the outer side of the frame and located in the negative pressure cover, a second hose is connected to the outer side of the negative pressure cover, dust outside the negative pressure cover can be conveniently sucked into a dust collection box through the first hose and the second hose by starting a vacuum pump, and meanwhile a motor is started; the banister brush is driven to clean the panel of the return air inlet back and forth, the vacuum pump is matched, dust around the return air inlet is sucked into the dust collection box by generating negative pressure, and compared with manual cleaning, the mode greatly improves the cleaning efficiency and is better in cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning cleaning technology, specifically to a self-cleaning device for the return air vent of a central air conditioning system. Background Technology

[0002] A central air conditioning return air vent is a component in a central air conditioning system used to return indoor air to the air conditioning unit. It is usually installed on an indoor wall or ceiling. Its main function is to collect indoor air that has been cooled or heated after being treated by the air conditioner, so that the air can circulate. During the operation of the air conditioner, the return air vent will continuously draw in indoor air. Dust, hair and other impurities in the air can easily adhere to the filter and grille of the return air vent. In order to maintain the air circulation efficiency, it needs to be cleaned.

[0003] Currently, cleaning devices still typically require manual assistance during use. This involves cleaning the return air vent panel with a soft brush. However, manual cleaning is time-consuming and labor-intensive, and people often find it difficult to clean frequently. If the air conditioner return air vent is not cleaned in time, dust and bacteria will accumulate, affecting air quality and the air conditioning's performance. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A self-cleaning device for central air conditioning return air vents includes:

[0006] The return air vent body has a return air vent panel connected to its bottom. The bottom of the return air vent body has strip-shaped holes on both sides. A fixing sleeve is connected through the inside of the strip-shaped holes. A drive mechanism is installed inside the fixing sleeve. A frame is connected to the bottom of the fixing sleeve. A negative pressure cover is connected to the outside of the frame. Several soft brushes are horizontally connected to the outside of the frame and inside the negative pressure cover. Air intake holes are opened on both sides of the soft brushes inside the frame.

[0007] The outer side of the negative pressure hood is connected to a second flexible hose, and a dust collection mechanism is provided at one end of the second flexible hose.

[0008] In one possible implementation, the drive mechanism includes a first shaft and a second shaft, with a pair of bearing seats rotatably connected to the two ends of the first shaft and the second shaft respectively. The bottom of the bearing seats is fixedly connected to the return air vent body. A ball bearing nut pair is connected to the outer side of the first shaft and the second shaft and to the middle position of the pair of bearing seats. The outer side of the ball bearing nut pair is fixedly connected to a fixed sleeve. A motor is connected to the left end of the second shaft.

[0009] In one possible implementation, the right end of the second shaft is connected to a second pulley, the right end of the first shaft is connected to a first pulley, and belts are fitted around the outer sides of the first and second pulleys.

[0010] In one possible implementation, the angle of the soft brush is the same as the angle of the return air vent panel.

[0011] In one possible implementation, the dust collection mechanism includes a dust collection box, a cover plate movably connected to the front side of the dust collection box, a first flexible hose penetrating the top of the dust collection box, a vacuum pump connected to one end of the first flexible hose, a side of the vacuum pump being fixedly connected to the return air vent body, and a second flexible hose being fixedly connected to the bottom of the dust collection box.

[0012] In one possible implementation, the dust collection box has an air outlet and an air inlet on its upper and lower sides, respectively, and a filter screen is connected to the inner wall of the dust collection box near the air outlet.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] By activating the vacuum pump, a negative pressure is created inside the dust collection box, facilitating the suction of dust from outside the negative pressure cover into the dust collection box through the first and second hoses. The dust then passes through a filter screen, effectively filtering the airborne dust. Simultaneously, the motor is activated, driving the second shaft to rotate. Through the connection of the first pulley, belt, and second pulley, the first shaft rotates synchronously, causing the ball bearing nuts and fixing sleeves on both sides to move left and right. This allows the negative pressure cover to move left and right along the return air vent panel, enabling the soft brush inside the cover to clean the panel repeatedly. Combined with the vacuum pump, the negative pressure draws dust from around the return air vent into the dust collection box. Compared to manual cleaning, this method significantly improves cleaning efficiency and achieves better cleaning results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the first shaft, second shaft, belt, and negative pressure cover of this utility model;

[0018] Figure 3This is a schematic diagram of the overall structure of the negative pressure cover and frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the dust collection box of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Return air vent body; 2. Vacuum pump; 3. First flexible hose; 4. Dust collection box; 5. Cover plate; 6. Second flexible hose; 7. Negative pressure cover; 8. Return air vent panel; 9. Strip hole; 10. Bearing seat; 11. First shaft; 12. First pulley; 13. Belt; 14. Second pulley; 15. Second shaft; 16. Motor; 17. Fixing sleeve; 18. Ball bearing nut pair; 19. Frame; 20. Soft brush; 21. Air intake hole; 22. Air inlet; 23. Air outlet; 24. Filter screen. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This application provides a self-cleaning device for the return air vent of a central air conditioning system, thereby solving the problems in the prior art.

[0024] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0025] like Figures 1-4 As shown, a self-cleaning device for a central air conditioning return air vent includes:

[0026] The return air vent body 1 has a return air vent panel 8 connected to its bottom. The bottom of the return air vent body 1 has strip-shaped holes 9 on both sides. A fixing sleeve 17 is connected through the inside of the strip-shaped holes 9. A drive mechanism is installed inside the fixing sleeve 17. A frame 19 is connected to the bottom of the fixing sleeve 17. A negative pressure cover 7 is connected to the outside of the frame 19. Several soft brushes 20 are horizontally connected to the outside of the frame 19 and inside the negative pressure cover 7. Air intake holes 21 are opened on both sides of the soft brushes 20 inside the frame 19.

[0027] A second hose 6 is connected to the outside of the negative pressure hood 7, and a dust collection mechanism is provided at one end of the second hose 6.

[0028] In some examples, the drive mechanism includes a first shaft 11 and a second shaft 15. A pair of bearing seats 10 are rotatably connected to the two ends of the first shaft 11 and the second shaft 15. The bottom of the bearing seats 10 is fixedly connected to the return air vent body 1. A ball nut pair 18 is connected to the outer side of the first shaft 11 and the second shaft 15 and to the middle position of the pair of bearing seats 10. The outer side of the ball nut pair 18 is fixedly connected to the fixed sleeve 17. A motor 16 is connected to the left end of the second shaft 15. When the motor 16 is turned on, the second shaft 15 and the first shaft 11 are driven to rotate synchronously, thereby driving the ball nut pair 18 and the fixed sleeve 17 on both sides to move left and right. This facilitates the driving of the negative pressure cover 7 to move left and right along the return air vent panel 8, so that the soft brush 20 inside the negative pressure cover 7 can clean the return air vent panel 8 back and forth.

[0029] In some examples, the right end of the second shaft 15 is connected to the second pulley 14, and the right end of the first shaft 11 is connected to the first pulley 12. The outer sides of the first pulley 12 and the second pulley 14 are fitted with belts 13. Through the connection of the first pulley 12, the belt 13 and the second pulley 14, it is beneficial to achieve a synchronization effect, so that the second shaft 15 can rotate while driving the first shaft 11 to rotate synchronously.

[0030] In some examples, the angle of the soft brush 20 matches the angle of the return air vent panel 8, which typically has a certain angle. The soft brush 20's angle aligns with this angle, ensuring full contact between the soft brush 20 and the return air vent panel 8 during cleaning. This ensures the soft brush 20 can reach deep into the gaps and holes of the return air vent panel 8, effectively removing accumulated dust and debris, avoiding cleaning blind spots, and achieving better cleaning results.

[0031] In some examples, the dust collection mechanism includes a dust collection box 4, a cover plate 5 movably connected to the front side of the dust collection box 4, a first flexible hose 3 penetrating the top of the dust collection box 4, a vacuum pump 2 connected to one end of the first flexible hose 3, a side of the vacuum pump 2 fixedly connected to the return air vent body 1, and a second flexible hose 6 fixedly connected to the bottom of the dust collection box 4. When the vacuum pump 2 is turned on, a negative pressure is formed inside the dust collection box 4, which facilitates the suction of dust outside the negative pressure cover 7 into the dust collection box 4 through the first flexible hose 3 and the second flexible hose 6, and through the filter screen 24, thus facilitating the filtration of dust in the air.

[0032] In some examples, the dust collection box 4 has an air outlet 23 and an air inlet 22 on its upper and lower sides, respectively. A filter screen 24 is connected to the inner wall of the dust collection box 4 near the air outlet 23. By setting the filter screen 24, it is convenient to trap the dust sucked into the dust collection box 4.

[0033] This invention creates a negative pressure inside the dust collection box 4 by activating the vacuum pump 2. This allows dust from outside the negative pressure cover 7 to be drawn into the dust collection box 4 through the first hose 3 and the second hose 6, and then filtered through the filter screen 24. Simultaneously, the motor 16 is activated, driving the second shaft 15 to rotate. Through the connection of the first pulley 12, belt 13, and second pulley 14, the first shaft 11 is driven to rotate synchronously, which in turn drives the ball bearing nuts 18 and the fixing sleeve 17 on both sides to move left and right. This allows the negative pressure cover 7 to move left and right along the return air vent panel 8, so that the soft brush 20 inside the negative pressure cover 7 can clean the return air vent panel 8 back and forth. Combined with the vacuum pump 2, the negative pressure generated draws dust from around the return air vent into the dust collection box 4. Compared with manual cleaning, this method greatly improves cleaning efficiency and achieves better cleaning results.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-cleaning device for the return air vent of a central air conditioning system, characterized in that, include: The return air vent body (1) has a return air vent panel (8) connected to its bottom. The bottom of the return air vent body (1) has strip-shaped holes (9) on both sides. A fixing sleeve (17) is connected through the inside of the strip-shaped hole (9). A driving mechanism is provided inside the fixing sleeve (17). A frame (19) is connected to the bottom of the fixing sleeve (17). A negative pressure cover (7) is connected to the outside of the frame (19). Several soft brushes (20) are horizontally connected to the outside of the frame (19) and inside the negative pressure cover (7). Air intake holes (21) are provided on both sides of the soft brushes (20) inside the frame (19). The negative pressure hood (7) is connected to a second hose (6) on the outside, and a dust collection mechanism is provided at one end of the second hose (6).

2. The self-cleaning device for a central air conditioning return air vent according to claim 1, characterized in that: The drive mechanism includes a first shaft (11) and a second shaft (15). A pair of bearing seats (10) are rotatably connected to the two ends of the first shaft (11) and the second shaft (15). The bottom of the bearing seats (10) is fixedly connected to the return air vent body (1). A ball nut pair (18) is connected to the outer side of the first shaft (11) and the second shaft (15) and located in the middle of the pair of bearing seats (10). The outer side of the ball nut pair (18) is fixedly connected to the fixed sleeve (17). A motor (16) is connected to the left end of the second shaft (15).

3. The self-cleaning device for a central air conditioning return air vent according to claim 2, characterized in that: The right end of the second shaft (15) is connected to the second pulley (14), the right end of the first shaft (11) is connected to the first pulley (12), and a belt (13) is sleeved on the outside of the first pulley (12) and the second pulley (14).

4. The self-cleaning device for a central air conditioning return air vent according to claim 1, characterized in that: The tilt angle of the soft brush (20) is consistent with the tilt angle of the return air vent panel (8).

5. A self-cleaning device for a central air conditioning return air vent according to claim 1, characterized in that: The dust collection mechanism includes a dust collection box (4), a cover plate (5) is movably connected to the front side of the dust collection box (4), a first flexible hose (3) is connected through the top of the dust collection box (4), a vacuum pump (2) is connected to one end of the first flexible hose (3), one side of the vacuum pump (2) is fixedly connected to the return air vent body (1), and the bottom of the dust collection box (4) is fixedly connected to the second flexible hose (6).

6. A self-cleaning device for a central air conditioning return air vent according to claim 5, characterized in that: The dust collection box (4) has an air outlet (23) and an air inlet (22) on its upper and lower sides, respectively. A filter screen (24) is connected to the inner wall of the dust collection box (4) near the air outlet (23).

Images