A kind of air conditioning anti-blocking device

By designing an automated cleaning mechanism in the HVAC system, a motor-driven brush is used to clean and collect impurities on the filter plate, solving the problem of filter plate clogging and improving the ventilation and heating efficiency of the air conditioner.

CN224580358UActive Publication Date: 2026-07-31BEIJING SHOUHUA CONSTR OPERATION CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING SHOUHUA CONSTR OPERATION CO LTD
Filing Date
2025-08-20
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

In existing HVAC systems, filter plates are easily clogged by dust, impurities, and other fibrous materials. Manual disassembly and cleaning are inconvenient, and untimely cleaning can easily lead to further clogging, affecting the air circulation and heating efficiency of the air conditioner.

Method used

An anti-clogging device for HVAC is designed, comprising a pipe body, a fixed frame, a support frame, a filter plate, and a cleaning mechanism. The device uses a motor-driven screw to drive a brush to clean impurities on the filter plate, and collects the impurities through a collection box and a fan suction, thus achieving automated cleaning and collection.

Benefits of technology

The system enables automated filter cleaning, reducing clogging, improving the ventilation and heating efficiency of the air conditioner, and facilitating its normal operation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224580358U_ABST
    Figure CN224580358U_ABST
Patent Text Reader

Abstract

This utility model discloses an anti-clogging device for HVAC (Heating, Ventilation, and Air Conditioning) systems, relating to the field of air conditioning and ventilation technology. It includes a pipe body with a fixed frame at its upper end, the frame communicating with the pipe body. A support frame is fixed to one side of the pipe body. Filter plates one, two, and three are installed inside the pipe body. A cleaning mechanism is provided between the support frame and the pipe body for cleaning and collecting impurities on the filter plates. The cleaning mechanism includes a motor fixed to the support frame. The motor output end passes through the support frame, extends into the fixed frame, and is fixedly connected to the pipe body with a screw. A movable block is threaded onto the screw, slidingly disposed with the pipe body. The screw passes through the movable block. A brush, arranged in an array, is located at the end of the movable block away from the screw. A limiting component is provided between the brush and the pipe body. This facilitates the collection of debris and impurities, facilitates the cleaning of the filter plates, reduces filter plate clogging, minimizes the impact on air conditioning heating and ventilation efficiency, and facilitates air conditioning operation.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of air conditioning and ventilation technology, specifically to an anti-clogging device for HVAC systems. Background Technology

[0002] In the industrial sector, HVAC systems provide a constant temperature and humidity environment for precision equipment (such as server rooms and laboratory instruments). Through mechanical air supply and exhaust, fresh outdoor air is introduced into the room while stale indoor air (such as carbon dioxide exhaled by people, cooking fumes, and volatile organic compounds from renovations) is expelled, ensuring the circulation and renewal of indoor air.

[0003] During the operation of HVAC systems, dust, impurities, and fibers can easily accumulate inside ventilation ducts and equipment, leading to blockages. Blockages not only reduce the operating efficiency of the ventilation and air conditioning system and increase energy consumption, but can also affect indoor air quality and even damage equipment.

[0004] Existing anti-clogging devices use one or more filter plates inside the pipes for layered filtration to reduce the blockage of ventilation ducts by dust, impurities and other fibrous materials. However, during use, the filter plates are easily clogged by dust, impurities and other fibrous materials, requiring manual disassembly and cleaning, which is inconvenient. If cleaning is not timely, the blockage can be aggravated. Furthermore, it is not easy to collect impurities, which affects the filtration effect of the filter plates and can easily reduce the air circulation of the air conditioner, thereby affecting the heating efficiency of the air conditioner. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-clogging device for HVAC systems, to solve the problems mentioned in the background art, where filter plates are easily clogged by dust, impurities, and other fibrous materials during use, requiring inconvenient manual disassembly and cleaning, and untimely cleaning can easily lead to increased clogging. Furthermore, it is difficult to collect impurities, affecting the filtration effect of the filter plate, reducing the airflow of the air conditioner, and consequently affecting the heating efficiency of the air conditioner. The objective of this utility model can be achieved through the following technical solutions: A clog prevention device for HVAC includes a pipe body, a fixing frame fixed at the upper end of the pipe body and communicating with the pipe body, a support frame fixed on one side of the pipe body, a filter plate one, a filter plate two, and a filter plate three installed inside the pipe body, and a cleaning mechanism provided between the support frame and the pipe body for cleaning and collecting impurities on the filter plates. The cleaning mechanism includes a motor fixed on a support frame. The output end of the motor passes through the support frame, extends into a fixed frame, and is fixedly connected to a screw inside the pipe. A movable block is threaded onto the screw. The movable block is slidably disposed with respect to the pipe. The screw passes through the movable block. A brush is provided at the end of the movable block away from the screw and is arranged in an array. A limiting component is provided between the brush and the pipe.

[0006] As a further embodiment of this utility model: the limiting component includes a limiting rod fixed inside the tube, a limiting block is provided at the end of the brush away from the moving block, the limiting rod slides through the limiting block, and a collecting component is provided between the limiting rod and the tube.

[0007] As a further embodiment of this utility model: the collecting component includes a collecting box fixed inside the tube, the collecting boxes are arranged in an array and correspond to filter plate one, filter plate two, and filter plate three, and a collecting tube is fixed inside the collecting box, the collecting tube being a horn tube.

[0008] As a further embodiment of this utility model: a first gear is fixed at the output end of the motor, and two symmetrical second gears are rotatably connected inside the support frame. The first gear meshes with the second gear, and a screw is fixedly connected to the lower end of each second gear.

[0009] As a further embodiment of this utility model: a rotating column is rotatably connected between the moving block and the limiting block, and the rotating column is fixedly connected to the brush.

[0010] As a further embodiment of this utility model: a toothed ring is fixed at one end of the rotating column, and a toothed rack is fixed on one side of the tube body, the toothed rack meshing with the toothed ring.

[0011] As a further embodiment of this utility model: a fan is fixed to the lower end of one side of the pipe body, an exhaust pipe is fixed to one end of the fan, a fixed pipe is fixedly connected to the end of the fan away from the exhaust pipe, three connecting pipes are fixed on the fixed pipe, the connecting pipes extend into the pipe body and are fixedly connected to the collection box, a cleaning box is fixed inside the fan by bolts, the lower end of the cleaning box extends out of the fan, and a filter screen is fixed to one side of the cleaning box.

[0012] As a further embodiment of this utility model: the filter plate one, filter plate two, and filter plate three have different filter thicknesses, the brush is a flexible brush, the end of the tube body is provided with an air inlet, and the end of the tube body away from the air inlet is provided with an air outlet.

[0013] The beneficial effects of this utility model are: 1. This utility model utilizes the forward and reverse rotation of a motor to rotate a screw, which in turn drives a moving block to rotate, providing power to the brush. This causes the brush to move and clean dust, impurities, and fibers from the filter plate, reducing filter plate clogging and minimizing the impact on air conditioning ventilation efficiency. This facilitates air conditioning ventilation and heating. The movement of the brush causes impurities and debris to fall into a collection box, which then enters a collection pipe, facilitating the collection of debris and impurities. This process further cleans the filter plate, reduces clogging, minimizes the impact on air conditioning heating and ventilation efficiency, and promotes smoother air conditioning operation.

[0014] 2. This utility model utilizes the rotation of a motor to cause the rotation of gear two, which in turn rotates the screw, driving multiple rotating columns to move. This, in turn, moves the brushes, simultaneously cleaning filter plates one, two, and three, improving cleaning efficiency and reducing filter plate clogging. Simultaneously, the rotating columns drive the gear ring to move on the rack, causing the rotating columns to rotate and the brushes to rotate, further enhancing the cleaning effect on the filter plates, reducing the residue of impurities and debris, facilitating the collection of impurities and debris, and aiding in the heating and ventilation of the air conditioner. At the same time, the operation of the fan generates suction to suck up and collect impurities and debris that fall during cleaning, reducing secondary contamination by dust and impurities. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the anti-blocking device of this utility model; Figure 2 This is a schematic diagram of the first internal structure of the anti-blocking device of this utility model; Figure 3 This is a schematic diagram of the internal second structure of the anti-blocking device of this utility model; Figure 4 This is a schematic diagram of the internal third structure of the anti-blocking device of this utility model.

[0017] In the diagram: 1. Pipe body; 2. Fixing frame; 3. Support frame; 4. Filter plate one; 5. Filter plate two; 6. Filter plate three; 7. Motor; 8. Screw; 9. Moving block; 10. Limiting rod; 11. Limiting block; 12. Rotating column; 13. Brush; 14. Gear one; 15. Gear two; 16. Gear ring; 17. Rack; 18. Collection box; 19. Collection pipe; 20. Connecting pipe; 21. Fixing pipe; 22. Fan; 23. Filter screen; 24. Cleaning box. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 - Figure 3 As shown, this utility model is an anti-clogging device for HVAC, including a pipe body 1, a fixing frame 2 fixed at the upper end of the pipe body 1, the fixing frame 2 being connected to the pipe body 1, a support frame 3 fixed on one side of the pipe body 1, a filter plate 4, a filter plate 5, and a filter plate 6 installed inside the pipe body 1, and a cleaning mechanism provided between the support frame 3 and the pipe body 1 for cleaning and collecting impurities on the filter plates. The cleaning mechanism includes a motor 7 fixed on a support frame 3. The output end of the motor 7 passes through the support frame 3, extends into a fixed frame 2, and is fixedly connected to a screw 8 inside the tube body 1. A movable block 9 is threaded onto the screw 8. The movable block 9 is slidably disposed with respect to the tube body 1. The screw 8 passes through the movable block 9. A brush 13 is arranged in an array at the end of the movable block 9 away from the screw 8. A limiting component is provided between the brush 13 and the tube body 1. The limiting component includes a limiting rod 10 fixed inside the tube body 1. A limiting block 11 is provided at the end of the brush 13 away from the movable block 9. The limiting rod 10 slides through the limiting block 11. A collecting component is provided between the limiting rod 10 and the tube body 1. The collecting component includes a collecting box 18 fixed inside the tube body 1. The collecting boxes 18 are arranged in an array and correspond to filter plates 4, 5, and 6. A collecting tube 19, which is a horn-shaped tube, is fixed inside the collecting box 18.

[0020] Specifically, the staff installs pipe body 1 onto a suitable pipeline, and filters dust, impurities, and fibers through filter plates 4, 5, and 6 inside pipe body 1. Specifically, the motor 7 rotates in both directions, causing the screw 8 to rotate, which in turn drives the moving block 9 to rotate, providing power to the brush 13. This allows the brush 13 to move and clean dust, impurities, and fibers from the filter plate. The limiting block 11 slides on the limiting rod 10, restricting the brush 13 and reducing filter plate clogging. This reduces the impact on air conditioning ventilation efficiency and facilitates air conditioning ventilation and heating. The movement of the brush 13 causes impurities and debris to fall into the collection box 18 and then into the collection pipe 19, facilitating the collection of debris and impurities, cleaning the filter plate, reducing filter plate clogging, minimizing the impact on air conditioning heating and ventilation efficiency, and facilitating air conditioning operation.

[0021] In this embodiment, refer to Figure 2 - Figure 4 As shown, a gear 14 is fixed to the output end of motor 7. Two symmetrical gears 15 are rotatably connected inside support frame 3. Gear 14 meshes with gear 15, and screws 8 are fixedly connected to the lower ends of gears 15. A rotating column 12 is rotatably connected between moving block 9 and limiting block 11. The rotating column 12 is fixedly connected to brush 13. A gear ring 16 is fixed to one end of rotating column 12. A rack 17 is fixed to one side inside pipe body 1, and the rack 17 meshes with the gear ring 16. A fan 22 is fixed to the lower end of one side of pipe body 1. An exhaust pipe is fixed to one end of fan 22. A fixed pipe 21 is fixed to the end of fan 22 away from the exhaust pipe. Three connecting pipes 20 are fixed to the fixed pipe 21. The connecting pipes 20 extend into pipe body 1 and are fixedly connected to collection box 18. A cleaning box 24 is fixed inside fan 22 by bolts. The lower end of cleaning box 24 extends out of fan 22. A filter screen 23 is fixed to one side of cleaning box 24.

[0022] Specifically, when motor 7 rotates, gear 14 rotates, causing gear 2 to rotate, which in turn causes screw 8 to rotate, moving block 9 and multiple rotating columns 12 to move, thus moving brush 13. This allows for simultaneous cleaning of filter plates 1-4, 2-5, and 3-6, improving cleaning efficiency and reducing filter plate clogging. Simultaneously, rotating columns 12 drive gear ring 16 to move on rack 17, causing rotating columns 12 to rotate and driving brush 13 to rotate, further improving the cleaning effect on the filter plates, reducing the residue of impurities and debris, facilitating the collection of impurities and debris, and improving the heating and ventilation functions of the air conditioner. At the same time, the operating fan... The fan 22 generates suction, which enters the connecting pipe 20 through the fixed pipe 21, causing the suction to surge out through the funnel-shaped collection pipe 19. The collection pipe 19 increases the collection area of ​​the suction, sucking in and collecting the impurities and debris that fall in during cleaning, reducing secondary contamination of dust and impurities. The collected debris and impurities enter the fan 22 through the fixed pipe 21, are blocked and filtered by the filter screen 23, and are collected and stored in the cleaning box 24. After completion, the bolts on the cleaning box 24 are tightened to release the restriction on the cleaning box 24, and the cleaning box 24 is pulled out, which moves the filter screen 23 out. After cleaning, the box is reset.

[0023] In this embodiment, refer to Figure 2 - Figure 3 As shown, filter plates 4, 5, and 6 have different filter thicknesses. The brush 13 is a flexible brush. The end of the tube body 1 has an air inlet, and the end of the tube body 1 away from the air inlet has an air outlet.

[0024] Specifically, after the pipe body 1 is installed, the air inlet and outlet facilitate the ventilation of the air conditioner. Filter plate 4 filters large particles of impurities, filter plate 5 filters smaller impurities and debris, and filter plate 6 performs fine filtration of impurities and debris to reduce pipe blockage.

[0025] The working principle of this utility model is as follows: The operator installs the pipe body 1 onto a suitable pipeline, and the dust, impurities and fibers are filtered layer by layer through the filter plate 4, filter plate 5 and filter plate 6 inside the pipe body 1. The filter plate 4 filters large particles of impurities, the filter plate 5 filters smaller impurities and debris a second time, and the filter plate 6 filters impurities and debris finely. Then, the motor 7 rotates in both directions, causing the screw 8 to rotate, which in turn drives the moving block 9 to rotate, providing power to the brush 13. This causes the brush 13 to move and clean the dust, impurities, and fibers on the filter plate. The limiting block 11 slides on the limiting rod 10 to restrict the brush 13, reducing filter plate clogging and minimizing the impact on air conditioning ventilation efficiency, thus facilitating air conditioning ventilation and heating. The movement of the brush 13 causes impurities and debris to fall into the collection box 18, which then enters the collection pipe 19 for easy collection of debris and impurities. Then, when motor 7 rotates, gear 14 rotates, causing gear 2 to rotate, which in turn causes screw 8 to rotate, moving block 9 and multiple rotating columns 12 to move, thus moving brush 13. This simultaneously cleans filter plates 1-4, 2-5, and 3-6, improving cleaning efficiency and reducing filter plate clogging. Simultaneously, rotating columns 12 drive gear ring 16 to move on rack 17, causing rotating columns 12 to rotate and driving brush 13 to rotate, improving the cleaning effect on the filter plates, reducing residual impurities and debris, facilitating the collection of impurities and debris, and improving the heating and ventilation functions of the air conditioner. At the same time, the operating fan... The fan 22 generates suction, which enters the connecting pipe 20 through the fixed pipe 21, causing the suction to surge out through the funnel-shaped collection pipe 19. The collection pipe 19 increases the collection area of ​​the suction, sucking in and collecting the impurities and debris that fall in during cleaning, reducing secondary contamination of dust and impurities. The collected debris and impurities enter the fan 22 through the fixed pipe 21, are blocked and filtered by the filter screen 23, and are collected and stored in the cleaning box 24. After completion, the bolts on the cleaning box 24 are tightened to release the restriction on the cleaning box 24, and the cleaning box 24 is pulled out, which moves the filter screen 23 out. After cleaning, the box is reset.

[0026] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A kind of heating ventilation and air conditioning anti-blocking device, including pipe body (1), it is characterized by: A fixing frame (2) is fixed at the upper end of the tube (1), the fixing frame (2) is connected to the tube (1), a support frame (3) is fixed on one side of the tube (1), a filter plate one (4), a filter plate two (5) and a filter plate three (6) are installed inside the tube (1), and a cleaning mechanism is provided between the support frame (3) and the tube (1) for cleaning and collecting impurities on the filter plates; The cleaning mechanism includes a motor (7) fixed on a support frame (3). The output end of the motor (7) passes through the support frame (3) and extends into the fixed frame (2) and is fixedly connected to a screw (8) inside the tube body (1). A moving block (9) is threaded onto the screw (8). The moving block (9) is slidably disposed with the tube body (1). The screw (8) passes through the moving block (9). A brush (13) is provided at the end of the moving block (9) away from the screw (8) and is arranged in an array. A limiting component is provided between the brush (13) and the tube body (1) to limit the limiting block (11).

2. The anti-blocking device for heating, ventilation, air conditioning and refrigeration system according to claim 1, wherein, The limiting component includes a limiting rod (10) fixed inside the tube (1), a limiting block (11) is provided at the end of the brush (13) away from the moving block (9), the limiting rod (10) slides through the limiting block (11), and a collecting element is provided between the limiting rod (10) and the tube (1) to collect and store the cleaned debris.

3. The anti-blocking device for heating, ventilation, air conditioning and refrigeration system according to claim 2, characterized in that, The collecting component includes a collecting box (18) fixed inside the tube body (1). The collecting boxes (18) are arranged in an array and correspond to filter plate one (4), filter plate two (5), and filter plate three (6). A collecting tube (19) is fixed inside the collecting box (18). The collecting tube (19) is a horn tube.

4. The anti-clogging device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that, The output end of the motor (7) is fixed with a gear one (14), and two symmetrical gear two (15) are rotatably connected inside the support frame (3). The gear one (14) meshes with the gear two (15), and the lower end of each gear two (15) is fixedly connected with a screw (8).

5. The anti-blocking device for heating, ventilation, air conditioning and refrigeration system according to claim 4, characterized in that, A rotating column (12) is rotatably connected between the moving block (9) and the limiting block (11), and the rotating column (12) is fixedly connected to the brush (13).

6. The anti-blocking device for heating, ventilation, air conditioning and refrigeration according to claim 5, characterized in that, One end of the rotating column (12) is fixed with a toothed ring (16), and a rack (17) is fixed inside the tube (1) on one side. The rack (17) meshes with the toothed ring (16).

7. The anti-clogging device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that, A fan (22) is fixed to the lower end of one side of the pipe body (1). An exhaust pipe is fixed to one end of the fan (22). A fixed pipe (21) is fixed to the end of the fan (22) away from the exhaust pipe. Three connecting pipes (20) are fixed on the fixed pipe (21). The connecting pipes (20) extend into the pipe body (1) and are fixedly connected to the collection box (18). A cleaning box (24) is fixed inside the fan (22) by bolts. The lower end of the cleaning box (24) extends out of the fan (22). A filter screen (23) is fixed to one side of the cleaning box (24).

8. The anti-clogging device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that, The filter plates 1 (4), 2 (5), and 3 (6) have different filter thicknesses. The brush (13) is a flexible brush. The end of the tube (1) is provided with an air inlet, and the end of the tube (1) away from the air inlet is provided with an air outlet.