Self-cleaning and sterilizing device for central air conditioner pipeline

By designing a self-cleaning and sterilization device for central air conditioning ducts, and utilizing a mobile vehicle, spraying and cleaning mechanism, combined with a dual-axis motor drive, efficient duct disinfection and cleaning are achieved, solving the problems of high labor intensity, low efficiency and safety risks in existing technologies.

CN224237781UActive Publication Date: 2026-05-15BEIJING ZHENXING HUALONG REFRIGERATION ENG GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING ZHENXING HUALONG REFRIGERATION ENG GRP
Filing Date
2025-04-08
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing technologies for cleaning and sterilizing central air conditioning ducts are labor-intensive, inefficient, and pose safety risks, making it difficult to guarantee cleaning effectiveness.

Method used

A self-cleaning and sterilization device for central air conditioning ducts was designed, including a mobile vehicle, a spraying mechanism, a cleaning mechanism, and a drive mechanism. It uses a dual-axis motor to drive a ring-shaped rotating plate and a rotating sleeve to spray disinfectant and clean with brushes. The combination of reciprocating and circular motions achieves efficient sterilization and cleaning.

Benefits of technology

It improves the mobility and efficiency of central air conditioning duct cleaning, ensures uniform disinfection and cleaning of all parts of the duct inner wall, reduces labor intensity and safety risks, and enhances cleaning results.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of cleaning and sterilizing equipment, and particularly relates to a central air conditioner pipeline self-cleaning and sterilizing device which comprises a movable vehicle body, a supporting seat is installed at the top of the movable vehicle body, a disinfectant box is installed at the top of the supporting seat, and a pump body is installed on one side of the disinfectant box. A spraying mechanism connected with the pump body is arranged on one side of the disinfectant box, the spraying mechanism comprises a U-shaped frame, a rotating sleeve is rotationally installed on the U-shaped frame, a multi-way valve is installed on one side of the rotating sleeve, a plurality of spraying pipes are fixedly installed on the outer side of the multi-way valve, a hose is installed on one side of the multi-way valve, and the hose is fixedly installed on a water outlet of the pump body in a sleeving mode. The cleaning device is reasonable in design, the spraying range is wider through reciprocating swing of the spraying pipe, it is guaranteed that all parts of the inner wall of a pipeline can be covered with disinfectant, dust and dirt on the inner wall of the pipeline can be fully cleaned through rotation of the cleaning mechanism, and the cleaning effect is improved.
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Description

Technical Field

[0001] This utility model relates to the field of cleaning and sterilization equipment technology, and in particular to a self-cleaning and sterilization device for central air conditioning ducts. Background Technology

[0002] During long-term use, central air conditioning systems accumulate a large amount of dust, dirt, and various bacteria, mold, and other microorganisms inside their ducts. These pollutants not only affect the cooling and heating efficiency of the air conditioner and increase energy consumption, but may also enter the indoor air through the air outlets, posing a threat to the health of indoor occupants.

[0003] Currently, cleaning and sterilizing central air conditioning ducts typically requires professionals to enter the ducts using various cleaning tools. This process is not only labor-intensive and inefficient, but also makes it difficult to guarantee the effectiveness of cleaning and sterilization, and poses certain safety risks. Therefore, we propose a self-cleaning and sterilizing device for central air conditioning ducts to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-cleaning and sterilization device for central air conditioning ducts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-cleaning and sterilizing device for central air conditioning ducts includes a mobile vehicle body. A support base is installed on the top of the mobile vehicle body, and a disinfectant tank is installed on the top of the support base. A pump body is installed on one side of the disinfectant tank, and a spraying mechanism connected to the pump body is provided on one side of the disinfectant tank. The spraying mechanism includes a U-shaped frame, a rotating sleeve rotatably mounted on the U-shaped frame, a multi-way valve installed on one side of the rotating sleeve, multiple spray pipes fixedly mounted on the outside of the multi-way valve, a flexible hose installed on one side of the multi-way valve, and the flexible hose fixedly mounted on the outlet of the pump body. An annular rotating plate is rotatably mounted on one side of the disinfectant tank, a guiding mechanism is provided between the annular rotating plate and the disinfectant tank, and cleaning mechanisms are installed at equal intervals on the outside of the annular rotating plate.

[0007] Preferably, the cleaning mechanism includes an L-shaped plate, a T-shaped rod, a connecting plate, a brush, and a compression spring. Multiple L-shaped plates are installed at equal intervals on the outer side of the annular rotating plate. A T-shaped rod is slidably installed on the L-shaped plate. A connecting plate is installed at one end of the T-shaped rod. A brush is installed on the outer side of the connecting plate. A compression spring is fixedly installed on the inner side of the connecting plate. One end of the compression spring is installed on the L-shaped plate.

[0008] Preferably, the guiding mechanism includes an annular guide groove and an annular guide seat. The annular guide groove is formed on one side of the disinfectant tank, and the annular guide seat is fixedly installed on one side of the annular rotating plate, and the annular guide seat is rotatably connected to the annular guide groove.

[0009] Preferably, a control box is fixedly installed on the top of the U-shaped frame, and a dual-axis motor is installed inside the control box. A drive mechanism is provided between the dual-axis motor and the annular rotating plate.

[0010] Preferably, the drive mechanism includes a rack and a drive gear. The rack is fixedly mounted on the outer side of the annular rotating plate, and the drive gear is fixedly mounted on one output shaft of the dual-axis motor, and the drive gear meshes with the rack.

[0011] Preferably, a drive shaft is rotatably mounted on the bottom inner wall of the control box, a reciprocating mechanism is provided between the dual-axis motor and the drive shaft, and a linkage mechanism is provided between the drive shaft and the rotating sleeve.

[0012] Preferably, the reciprocating mechanism includes a reciprocating lead screw, a drive plate, a rack seat, and a transmission gear. The reciprocating lead screw is fixedly installed on another output shaft of the dual-axis motor. The drive plate is slidably installed inside the control box and threaded onto the reciprocating lead screw. A rack seat is fixedly installed on one side of the drive plate, and a transmission gear is fixedly installed on the top end of the transmission shaft. The rack seat meshes with the transmission gear.

[0013] Preferably, the linkage mechanism includes a driving bevel gear and a driven bevel gear. The driving bevel gear is fixedly installed at the bottom end of the transmission shaft, and the driven bevel gear is fixedly sleeved on the outer side of the rotating sleeve. The driving bevel gear and the driven bevel gear mesh with each other.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up a mobile vehicle, the entire device can be easily moved to the cleaning location of the central air conditioning duct, improving the device's mobility.

[0016] 2. The multi-way valve and multiple spray nozzles of the spraying mechanism can evenly spray disinfectant onto the inner wall of the pipe, achieving efficient sterilization. The oscillation of the rotating sleeve makes the spraying range wider, ensuring that all parts of the inner wall of the pipe can be covered by disinfectant.

[0017] 3. The brushes of the cleaning mechanism are always in close contact with the inner wall of the pipe under the action of the compression spring. As the annular rotating plate rotates, it can effectively clean the dust and dirt on the inner wall of the pipe, improving the cleaning effect.

[0018] 4. The drive mechanism uses a dual-axis motor to drive the drive gear to rotate, which in turn drives the annular rotating plate to rotate, realizing the circular motion of the cleaning mechanism and improving cleaning efficiency.

[0019] 5. The cooperation between the reciprocating mechanism and the linkage mechanism allows the rotating sleeve to rotate circumferentially and reciprocate along the axial direction at the same time, which further expands the spraying range and improves the sterilization effect. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a self-cleaning and sterilizing device for central air conditioning ducts proposed in this utility model;

[0021] Figure 2 This is a partial three-dimensional structural diagram of a self-cleaning and sterilizing device for central air conditioning ducts proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of part A of a self-cleaning and sterilizing device for central air conditioning ducts proposed in this utility model.

[0023] Figure 4 for Figure 2 A schematic diagram of a local structure in the image;

[0024] Figure 5 for Figure 4 A schematic diagram of part B in the diagram.

[0025] In the diagram: 101. Mobile vehicle body; 102. Support seat; 103. Disinfectant tank; 104. U-shaped frame; 201. Pump body; 202. Rotating sleeve; 203. Multi-way valve; 204. Hose; 205. Spray nozzle; 301. Annular rotating plate; 302. Guide mechanism; 401. L-shaped plate; 402. T-shaped rod; 403. Connecting plate; 404. Brush; 405. Compression spring; 501. Rack 1; 502. Dual-shaft motor; 503. Drive gear; 601. Transmission shaft; 602. Drive bevel gear; 603. Driven bevel gear; 701. Drive plate; 702. Reciprocating screw; 703. Rack seat; 704. Transmission gear; 8. Control box. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] This application discloses a self-cleaning and sterilization device for central air conditioning ducts.

[0028] Reference Figure 1-5A self-cleaning and sterilizing device for central air conditioning ducts includes a mobile vehicle 101, a support base 102 mounted on the top of the mobile vehicle 101, a disinfectant tank 103 mounted on the top of the support base 102, a pump body 201 mounted on one side of the disinfectant tank 103, and a spraying mechanism connected to the pump body 201 on one side of the disinfectant tank 103. The spraying mechanism includes a U-shaped frame 104, a rotating sleeve 202 rotatably mounted on the U-shaped frame 104, a multi-way valve 203 mounted on one side of the rotating sleeve 202, multiple spray pipes 205 fixedly mounted on the outside of the multi-way valve 203, a hose 204 mounted on one side of the multi-way valve 203 and fixedly fitted onto the outlet of the pump body 201, an annular rotating plate 301 rotatably mounted on one side of the disinfectant tank 103, a guide mechanism 302 between the annular rotating plate 301 and the disinfectant tank 103, and cleaning mechanisms evenly spaced on the outside of the annular rotating plate 301.

[0029] In this embodiment, the cleaning mechanism includes an L-shaped plate 401, a T-shaped rod 402, a connecting plate 403, a brush 404, and a compression spring 405. Multiple L-shaped plates 401 are evenly spaced on the outer side of the annular rotating plate 301. A T-shaped rod 402 is slidably mounted on the L-shaped plate 401. A connecting plate 403 is mounted on one end of the T-shaped rod 402. A brush 404 is mounted on the outer side of the connecting plate 403. A compression spring 405 is fixedly mounted on the inner side of the connecting plate 403. One end of the compression spring 405 is mounted on the L-shaped plate 401. This design ensures that the brush 404 remains tightly fitted to the inner wall of the pipe under the action of the compression spring 405, effectively removing dust and dirt from various locations on the inner wall of the pipe when the annular rotating plate 301 rotates, improving the cleaning effect and ensuring comprehensive and thorough cleaning.

[0030] In this embodiment, the guiding mechanism 302 includes an annular guide groove and an annular guide seat. The annular guide groove is opened on one side of the disinfectant tank 103, and the annular guide seat is fixedly installed on one side of the annular rotating plate 301. The annular guide seat is rotatably connected to the annular guide groove. The guiding mechanism 302 provides stable support and guidance for the rotation of the annular rotating plate 301, so that the annular rotating plate 301 remains stable during the rotation around the disinfectant tank 103, avoiding shaking or deviation. This ensures that the cleaning mechanism and the spraying mechanism can accurately and stably clean and sterilize the inner wall of the pipe, improving the reliability of the entire device operation.

[0031] In this embodiment, a control box 8 is fixedly installed on the top of the U-shaped frame 104. A dual-axis motor 502 is installed inside the control box 8. A drive mechanism is provided between the dual-axis motor 502 and the annular rotating plate 301. The control box 8 centrally arranges the dual-axis motor 502 and related drive mechanisms, facilitating the control and maintenance of the entire device's power system. The dual-axis motor 502 provides power to the rotation of the annular rotating plate 301 through the drive mechanism, thus driving the cleaning and spraying mechanisms. The structure is compact and the power transmission is highly efficient.

[0032] In this embodiment, the drive mechanism includes a rack 501 and a drive gear 503. The rack 501 is fixedly mounted on the outer side of the annular rotating plate 301. The drive gear 503 is fixedly mounted on one output shaft of the dual-axis motor 502, and the drive gear 503 meshes with the rack 501. This gear and rack transmission method can accurately convert the rotational motion of the dual-axis motor 502 into the circular motion of the annular rotating plate 301, with a stable transmission ratio and reliable power transmission.

[0033] In this embodiment, a drive shaft 601 is rotatably mounted on the bottom inner wall of the control box 8. A reciprocating mechanism is provided between the dual-axis motor 502 and the drive shaft 601, and a linkage mechanism is provided between the drive shaft 601 and the rotating sleeve 202. The reciprocating mechanism includes a reciprocating lead screw 702, a drive plate 701, a rack seat 703, and a transmission gear 704. The reciprocating lead screw 702 is fixedly mounted on the other output shaft of the dual-axis motor 502. The drive plate 701 is slidably mounted inside the control box 8 and threaded onto the reciprocating lead screw 702. A rack seat 703 is fixedly mounted on one side of the drive plate 701, and a transmission gear 704 is fixedly mounted on the top end of the drive shaft 601. The rack seat 703 meshes with the transmission gear 704. The design of this reciprocating mechanism and linkage mechanism enables the other output shaft of the dual-axis motor 502 to transmit power to the rotating sleeve 202 through a series of transmission components, so that it can reciprocate along the axial direction while rotating in a circular motion. This reciprocating motion greatly expands the spray range of the nozzle 205, ensuring that the disinfectant can evenly cover the entire inner wall of the pipe, significantly improving the sterilization effect.

[0034] In this embodiment, the linkage mechanism includes a driving bevel gear 602 and a driven bevel gear 603. The driving bevel gear 602 is fixedly installed at the bottom end of the transmission shaft 601, and the driven bevel gear 603 is fixedly sleeved on the outer side of the rotating sleeve 202. The driving bevel gear 602 and the driven bevel gear 603 mesh with each other. The linkage mechanism composed of the driving bevel gear 602 and the driven bevel gear 603 cleverly changes the rotation direction of the transmission shaft 601, so that the transmission shaft 601 can smoothly drive the rotating sleeve 202 to rotate. This transmission method has a simple and compact structure, high transmission efficiency, and can stably transmit power from the transmission shaft 601 to the rotating sleeve 202, providing a reliable guarantee for realizing the reciprocating motion of the rotating sleeve 202, thereby improving the sterilization efficiency of the entire device.

[0035] In this invention, the mobile frame can move within the central air conditioning duct. Then, the dual-axis motor 502 is activated. One output shaft of the dual-axis motor 502 drives the drive gear 503 to rotate. The drive gear 503 meshes with the rack 501, thereby driving the annular rotating plate 301 to rotate around the disinfectant tank 103. At this time, the brush 404 of the cleaning mechanism cleans the inner wall of the duct in a circumferential direction as the annular rotating plate 301 rotates. Simultaneously, the compression spring 405 applies pressure to the brush 404, ensuring that the brush 404 remains in close contact with the inner wall of the duct, thus achieving the purpose of cleaning dust and dirt from the inner wall of the duct. The other output shaft of the dual-axis motor 502 drives the reciprocating screw 702 to rotate. Under the action of the reciprocating screw 702, the drive plate 701 reciprocates axially. The rack seat 703 on one side of the drive plate 701 connects with the transmission shaft 601 at its top. Gear 704 meshes, causing the drive shaft 601 to reciprocate. The driving bevel gear 602 at the bottom of the drive shaft 601 meshes with the driven bevel gear 603 on the outer side of the rotating sleeve 202, transmitting the rotation of the drive shaft 601 to the rotating sleeve 202. This allows the rotating sleeve 202 to rotate circumferentially and reciprocate axially. Meanwhile, the pump body 201 delivers the disinfectant solution from the disinfectant tank 103 through the hose 204 to the multi-way valve 203, which then distributes it to various spray nozzles 205. The spray nozzles 205 evenly spray the disinfectant solution onto the inner wall of the pipe. Due to the reciprocating motion of the rotating sleeve 202, the spray area covers the entire inner wall of the pipe, achieving efficient sterilization.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-cleaning and sterilization device for central air conditioning ducts, characterized in that, The device includes a mobile vehicle body (101), a support base (102) is installed on the top of the mobile vehicle body (101), a disinfectant tank (103) is installed on the top of the support base (102), a pump body (201) is installed on one side of the disinfectant tank (103), and a spraying mechanism connected to the pump body (201) is provided on one side of the disinfectant tank (103). The spraying mechanism includes a U-shaped frame (104), a rotating sleeve (202) is rotatably mounted on the U-shaped frame (104), a multi-way valve (203) is mounted on one side of the rotating sleeve (202), a multi-way valve (205) is fixedly mounted on the outside of the multi-way valve (203), a hose (204) is mounted on one side of the multi-way valve (203), and the hose (204) is fixedly mounted on the outlet of the pump body (201); A ring-shaped rotating plate (301) is rotatably installed on one side of the disinfectant tank (103). A guide mechanism (302) is provided between the ring-shaped rotating plate (301) and the disinfectant tank (103). Cleaning mechanisms are installed at equal intervals on the outer side of the ring-shaped rotating plate (301).

2. The self-cleaning and sterilization device for central air conditioning ducts according to claim 1, characterized in that, The cleaning mechanism includes an L-shaped plate (401), a T-shaped rod (402), a connecting plate (403), a brush (404), and a compression spring (405). Multiple L-shaped plates (401) are installed at equal intervals on the outer side of the annular rotating plate (301). A T-shaped rod (402) is slidably installed on the L-shaped plate (401). A connecting plate (403) is installed at one end of the T-shaped rod (402). A brush (404) is installed on the outer side of the connecting plate (403). A compression spring (405) is fixedly installed on the inner side of the connecting plate (403). One end of the compression spring (405) is installed on the L-shaped plate (401).

3. The self-cleaning and sterilization device for central air conditioning ducts according to claim 1, characterized in that, The guiding mechanism (302) includes an annular guide groove and an annular guide seat. The annular guide groove is opened on one side of the disinfectant tank (103), and the annular guide seat is fixedly installed on one side of the annular rotating plate (301), and the annular guide seat is rotatably connected to the annular guide groove.

4. The self-cleaning and sterilization device for central air conditioning ducts according to claim 1, characterized in that, A control box (8) is fixedly installed on the top of the U-shaped frame (104). A dual-axis motor (502) is installed inside the control box (8). A drive mechanism is provided between the dual-axis motor (502) and the annular rotating plate (301).

5. A self-cleaning and sterilizing device for central air conditioning ducts according to claim 4, characterized in that, The drive mechanism includes a rack (501) and a drive gear (503). The rack (501) is fixedly mounted on the outer side of the annular rotating plate (301). The drive gear (503) is fixedly mounted on one output shaft of the dual-axis motor (502), and the drive gear (503) meshes with the rack (501).

6. A self-cleaning and sterilizing device for central air conditioning ducts according to claim 4, characterized in that, A drive shaft (601) is rotatably mounted on the bottom inner wall of the control box (8). A reciprocating mechanism is provided between the dual-axis motor (502) and the drive shaft (601), and a linkage mechanism is provided between the drive shaft (601) and the rotating sleeve (202).

7. A self-cleaning and sterilizing device for central air conditioning ducts according to claim 6, characterized in that, The reciprocating mechanism includes a reciprocating lead screw (702), a drive plate (701), a rack seat (703), and a transmission gear (704). The reciprocating lead screw (702) is fixedly installed on another output shaft of the dual-axis motor (502). The drive plate (701) is slidably installed in the control box (8), and the drive plate (701) is threaded onto the reciprocating lead screw (702). A rack seat (703) is fixedly installed on one side of the drive plate (701), and a transmission gear (704) is fixedly installed at the top of the transmission shaft (601). The rack seat (703) meshes with the transmission gear (704).

8. A self-cleaning and sterilizing device for central air conditioning ducts according to claim 6, characterized in that, The linkage mechanism includes a driving bevel gear (602) and a driven bevel gear (603). The driving bevel gear (602) is fixedly installed at the bottom end of the transmission shaft (601), and the driven bevel gear (603) is fixedly sleeved on the outer side of the rotating sleeve (202). The driving bevel gear (602) and the driven bevel gear (603) mesh with each other.