A cleaning device for central air conditioning pipeline cleaning
By designing cleaning, moving, and limiting mechanisms for the cleaning device, the problems of high labor intensity in manual cleaning and difficulty in stabilizing the high-pressure nozzles were solved, achieving efficient and thorough cleaning of the inner walls of central air conditioning ducts, especially for complex structures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN QIANSHI ENERGY SAVING & ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-02
AI Technical Summary
In existing technologies, manual cleaning of central air conditioning ducts is labor-intensive and inefficient. High-pressure nozzles are difficult to move stably in complex pipelines, resulting in unsatisfactory cleaning effects that cannot meet the high-efficiency cleaning standards of modern industry.
A cleaning device including cleaning, moving and limiting mechanisms was designed. The device uses a drive motor to drive gears and elbow spray pipes, combined with a rotating cleaning brush and high-pressure water flow, to achieve stable movement and thorough cleaning of the inner wall of the pipe, especially for the treatment of complex structures.
It achieves precise positioning and efficient movement of the inner wall of central air conditioning ducts, ensuring thorough and stable cleaning, especially for the effective cleaning of complex structures such as bends, thus improving cleaning efficiency.
Smart Images
Figure CN224309205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning duct cleaning technology, and in particular to a cleaning device for cleaning central air conditioning ducts. Background Technology
[0002] Central air conditioning ducts are a crucial component of a central air conditioning system, used to transport cold / heating media (such as chilled water, hot water, or refrigerant). Like blood vessels in the human body, they connect the main unit of the central air conditioning system (such as a chiller or heat pump) to the terminal devices in each room (such as fan coil units, radiators, or indoor air conditioning units). These ducts are typically made of copper, steel, or well-insulated plastic. The circulating cold / heating medium carries the cooling or heating energy generated by the main unit to the spaces requiring temperature regulation, thereby achieving centralized, efficient, and comfortable environmental temperature control throughout the building or a large area. The duct system is also often equipped with insulation layers and anti-condensation measures to reduce energy loss and ensure operational efficiency.
[0003] In the field of pipeline cleaning, the current mainstream traditional methods mainly rely on manual operation or direct flushing with high-pressure nozzles. However, both methods have significant shortcomings. Manual cleaning is not only labor-intensive and inefficient, but also unable to meet the demands of modern industry for large-scale, high-efficiency cleaning. While high-pressure nozzle flushing is effective in simple straight pipes, the device often struggles to achieve stable and controllable movement within the pipe wall, especially in complex pipelines or bends. This greatly limits its application and the thoroughness of cleaning, resulting in unsatisfactory cleaning effects that fail to meet increasingly stringent pipeline cleanliness standards. Utility Model Content
[0004] One objective of this invention is to provide a cleaning device for cleaning central air conditioning ducts. This invention addresses the issues raised in the background, such as the high labor intensity and low efficiency of manual cleaning, which are insufficient to meet the demands of modern industry for large-scale, high-efficiency cleaning. While high-pressure nozzle flushing is effective for simple straight pipes, the device often struggles to achieve stable and controllable movement within the pipe wall, especially in complex pipe or bend structures. This significantly limits its application and the thoroughness of cleaning, resulting in unsatisfactory cleaning effects that fail to meet increasingly stringent pipe cleaning standards.
[0005] A cleaning device for cleaning central air conditioning ducts according to an embodiment of the present invention includes a main body shell, a cleaning mechanism, a moving mechanism, and a limiting mechanism. The cleaning mechanism includes a water supply pipe and an elbow spray pipe. The elbow spray pipe is rotatably installed at one end of the water supply pipe, and the water supply pipe is fixedly installed inside the main body shell. The moving mechanism includes a sliding ring, a first roller, and a second roller. A top rod is rotatably installed on the side surface of the sliding ring, and a rotating rod is rotatably installed on the side surface of the main body shell. The top rod is rotatably installed on the side surface of the rotating rod. The first roller is rotatably connected to one end of the rotating rod, and the second roller is movably installed on the side surface of the rotating rod. The limiting mechanism includes a locking rod and a structural groove. The structural groove is formed inside the main body shell, and the locking rod is rotatably installed inside the structural groove via a rotating shaft.
[0006] Preferably, a rotating disk is fixedly installed on the side surface of the elbow nozzle, and a cleaning brush is fixedly installed on the side surface of the rotating disk.
[0007] Preferably, a drive motor is fixedly installed at one end of the inner shell of the main body by a fixing block, and a drive gear is drivenly installed at the output end of the drive motor. A driven gear is fixedly installed on the side surface of the elbow nozzle, and the driven gear and the drive gear mesh with each other.
[0008] Preferably, a fixing ring is fixedly installed at one end of the side surface of the main body shell, and a first spring is installed between the sliding ring and the fixing ring.
[0009] Preferably, the push rod is rotatably mounted on the side surface of the sliding ring via a second rotating seat.
[0010] Preferably, one end of the rotating rod is rotatably mounted on the side surface of the main body shell via a first rotating seat.
[0011] Preferably, an elastic telescopic rod is fixedly installed on the side surface of the rotating rod, and the second roller is rotatably installed on the telescopic end of the elastic telescopic rod. The side surfaces of the second roller and the first roller are both provided with grooves, which facilitate the normal rolling of the second roller and the first roller in the corrugated structure of the bent pipe.
[0012] Preferably, a second spring is installed between the inner side of the lever and the inner wall of the structural groove, and a button is movably installed through the outer side of the structural groove.
[0013] The beneficial effects of this utility model are:
[0014] This utility model, through its designed moving mechanism, allows the device to be placed inside the central air conditioning duct when cleaning is required. The moving mechanism is then unlocked by a limiting mechanism. Once the locking lever is released, the first spring pushes the sliding ring towards the cleaning mechanism, and the push rod pushes the rotating rod outward until the first roller contacts the inner wall of the duct. Simultaneously, the second roller is pushed outward by the force of the elastic telescopic rod, and the second roller also contacts the inner wall of the duct. The device is then pushed into the duct through the water supply pipe, achieving stable movement of the device within the central air conditioning duct. This ensures precise positioning and efficient movement, guaranteeing thorough cleaning.
[0015] This utility model features a cleaning mechanism. After the device enters the pipe, the drive motor is activated, which in turn drives the active gear to rotate, thereby causing the driven gear and the elbow nozzle to rotate. The elbow nozzle sprays clean water from the water supply pipe at high pressure, performing high-pressure rinsing on the inner wall of the pipe. At the same time, the elbow nozzle drives a rotating disk fixedly connected to its surface to rotate, and a cleaning brush fixedly installed on the side surface of the rotating disk cleans the inner wall of the pipe, achieving a more thorough cleaning, especially capable of handling complex structures such as bends, thus improving efficiency.
[0016] This invention utilizes a limiting mechanism. When not in use, the sliding ring slides towards the fixed ring, causing it to be locked by one end of the locking rod. At this time, the first spring is compressed. During use, pressing the button inwards presses the locking rod inwards, causing it to rotate inwards around its axis. This retracts the locking rod into the main body housing. Once the locking force is released, the sliding ring slides towards the cleaning mechanism, allowing the moving mechanism to automatically conform to the inner wall of the pipe. The device unlocks quickly during use, automatically conforming to the pipe, making operation convenient and ensuring the stability and safety of the cleaning process. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of a cleaning device for cleaning central air conditioning ducts proposed in this utility model.
[0019] Figure 2 This is a schematic diagram of the internal structure of one end of the main shell of a cleaning device for cleaning central air conditioning ducts proposed in this utility model.
[0020] Figure 3 This utility model proposes a cleaning device for cleaning central air conditioning ducts. Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 This is a cross-sectional view of the internal structure of the main body shell of a cleaning device for cleaning central air conditioning ducts proposed in this utility model.
[0022] In the diagram: 1. Main body shell; 2. Cleaning mechanism; 201. Water supply pipe; 202. Elbowed spray pipe; 203. Rotating disc; 204. Cleaning brush; 205. Fixing block; 206. Drive motor; 207. Drive gear; 208. Driven gear; 3. Moving mechanism; 301. First rotating seat; 302. Rotating rod; 303. First roller; 304. Groove; 305. Elastic telescopic rod; 306. Second roller; 307. Sliding ring; 308. Second rotating seat; 309. Top rod; 310. Fixing ring; 311. First spring; 4. Limiting mechanism; 401. Locking rod; 402. Rotating shaft; 403. Second spring; 404. Button; 405. Structural groove. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0024] refer to Figure 1-4A cleaning device for cleaning central air conditioning ducts includes a main housing 1, a cleaning mechanism 2, a moving mechanism 3, and a limiting mechanism 4. The cleaning mechanism 2 includes a water supply pipe 201 and an elbow spray pipe 202. The elbow spray pipe 202 is rotatably mounted on one end of the water supply pipe 201, which is fixedly installed inside the main housing 1. The moving mechanism 3 includes a sliding ring 307, a first roller 303, and a second roller 306. A top rod 309 is rotatably mounted on the side surface of the sliding ring 307, and a rotating rod 302 is rotatably mounted on the side surface of the main housing 1. The top rod 309 is rotatably mounted on the side surface of the rotating rod 302. The first roller 303 is rotatably connected to one end of the rotating rod 302, and the second roller 306 is movably mounted on the side surface of the rotating rod 302. The limiting mechanism 4 includes a locking rod 401 and a structural groove 405, which is formed in the main housing 1. Inside the device, the locking rod 401 is rotatably mounted inside the structural groove 405 via the rotating shaft 402. When the device needs to be used to clean the inner wall of the central air conditioning duct, it is placed inside the duct via the moving mechanism 3. The moving mechanism 3 is unlocked by the limiting mechanism 4. After the locking rod 401 is released, the first spring 311 pushes the sliding ring 307 towards the cleaning mechanism 2. The pushing rod 309 pushes the rotating rod 302 outward until the first roller 303 contacts the inner wall of the duct. Simultaneously, the second roller 306 is pushed outward by the force of the elastic telescopic rod 305, and the second roller 306 contacts the inner wall of the duct. The device is then pushed into the duct via the water supply pipe 201, achieving stable movement of the device within the central air conditioning duct, ensuring precise positioning and efficient movement, and guaranteeing the thoroughness of the cleaning operation.
[0025] Example 1: A rotating disk 203 is fixedly installed on the side surface of the elbow nozzle 202, and a cleaning brush 204 is fixedly installed on the side surface of the rotating disk 203. A drive motor 206 is fixedly installed at one end of the main body shell 1 through a fixing block 205. A drive gear 207 is driven and installed at the output end of the drive motor 206. A driven gear 208 is fixedly installed on the side surface of the elbow nozzle 202. The driven gear 208 and the drive gear 207 mesh with each other. After the device enters the pipe through the cleaning mechanism 2, the drive motor 206 is started. The drive motor 206 drives the drive gear 207 to rotate, thereby causing the driven gear 208 and the elbow nozzle 202 to rotate. The elbow nozzle 202 sprays clean water from the water supply pipe 201 at high pressure, performing high-pressure flushing on the inner wall of the pipe. At the same time, the elbow nozzle 202 drives the rotating disk 203 fixedly connected to its surface to rotate. The cleaning brush 204, which is fixedly installed on the side surface of the rotating disk 203, cleans the inner wall of the pipe, achieving a more thorough cleaning, especially capable of handling complex structures such as bends, thus improving efficiency. A fixed ring 310 is fixedly installed at one end of the side surface of the main body shell 1. A first spring 311 is installed between the sliding ring 307 and the fixed ring 310. The top rod 309 is rotatably installed on the side surface of the sliding ring 307 via the second rotating seat 308. One end of the rotating rod 302 is rotatably installed on the side surface of the main body shell 1 via the first rotating seat 301. An elastic telescopic rod 305 is fixedly installed on the side surface of the rotating rod 302. A second roller 306 is rotatably installed on the telescopic end of the elastic telescopic rod 305. Grooves 304 are provided on the side surfaces of both the second roller 306 and the first roller 303, which facilitate the normal rolling of the second roller 306 and the first roller 303 in the corrugated structure of the bend.
[0026] Example 2: A second spring 403 is installed between the inner side of the clamping rod 401 and the inner wall of the structural groove 405. A button 404 is movably installed through the outer side of the structural groove 405. Through the set limiting mechanism 4, when the device is not in use, the sliding ring 307 slides towards the fixed ring 310, so that the sliding ring 307 is clamped by one end of the clamping rod 401. At this time, the first spring 311 is in a compressed state. When in use, the button 404 is pressed inward, and the button 404 presses one end of the clamping rod 401 inward, so that the clamping rod 401 rotates inward around the rotating shaft 402, so that one end of the clamping rod 401 retracts inward into the main body shell 1. After losing the clamping force of the clamping rod 401, the sliding ring 307 slides towards the cleaning mechanism 2, so that the moving mechanism 3 automatically fits the inner wall of the pipe. When in use, it can be quickly unlocked and automatically fits the pipe. The operation is convenient and ensures the stability and safety of cleaning.
[0027] When using the central air conditioning duct cleaning device, first place the device inside the duct. In the initial state, the locking rod 401 of the limiting mechanism 4 locks the sliding ring 307, and the first spring 311 is compressed. When in use, press the button 404 inward. The button 404 pushes the locking rod 401 to rotate around the rotating shaft 402, causing one end of the locking rod 401 to retract into the main body shell 1, losing the locking force on the sliding ring 307. At this time, the compressed first spring 311 releases energy, pushing the sliding ring 307 toward the cleaning mechanism 2. As the sliding ring 307 moves, it drives the push rod 309 to move. The push rod 309 then pushes the rotating rod 302 to extend outward until the first roller 303 at one end of the rotating rod 302 contacts the inner wall of the pipe. At the same time, the elastic telescopic rod 305 on the side surface of the rotating rod 302 extends, pushing the second roller 306 to contact the inner wall of the pipe as well. In this way, the grooves 304 on the side surfaces of the first roller 303 and the second roller 306 are designed to facilitate rolling at the bend and corrugated structure of the pipe, so that the moving mechanism 3 automatically fits the inner wall of the pipe. The device is pushed further into the pipe through the water supply pipe 201, achieving stable movement and precise positioning of the device within the central air conditioning duct wall. After starting the device, the drive motor 206 rotates, its output driving the drive gear 207. The drive gear 207 meshes with the driven gear 208 on the side surface of the elbow nozzle 202, thus driving the elbow nozzle 202 to rotate. The water supply pipe 201 continuously supplies clean water to the elbow nozzle 202, and the rotating elbow nozzle 202 sprays high-pressure water onto the inner wall of the pipe. During the initial rinsing, the rotation of the elbow nozzle 202 causes the rotating disk 203 and the cleaning brush 204 fixedly connected to its side surface to rotate together. The cleaning brush 204 directly rubs the inner wall of the pipe for deep physical cleaning. This combination of high-pressure water rinsing and rotating brushing ensures the thorough cleaning of the inner wall of the pipe, especially complex structures such as bends. When not in use, the sliding ring 307 is slid toward the fixed ring 310, so that it is locked by the locking rod 401, and the first spring 311 is compressed again to complete the locking of the device.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A cleaning device for cleaning central air conditioning ducts, characterized in that, The system includes a main body shell (1), a cleaning mechanism (2), a moving mechanism (3), and a limiting mechanism (4). The cleaning mechanism (2) includes a water supply pipe (201) and a bend spray pipe (202). The bend spray pipe (202) is rotatably mounted on one end of the water supply pipe (201), and the water supply pipe (201) is fixedly mounted inside the main body shell (1). The moving mechanism (3) includes a sliding ring (307), a first roller (303), and a second roller (306). A push rod (309) is rotatably mounted on the side surface of the sliding ring (307). A rotating rod (302) is rotatably mounted on the side surface of the outer shell (1). The top rod (309) is rotatably mounted on the side surface of the rotating rod (302). The first roller (303) is rotatably connected to one end of the rotating rod (302). The second roller (306) is movably mounted on the side surface of the rotating rod (302). The limiting mechanism (4) includes a locking rod (401) and a structural groove (405). The structural groove (405) is opened inside the main outer shell (1). The locking rod (401) is rotatably mounted inside the structural groove (405) through a rotating shaft (402).
2. The cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, A rotating disk (203) is fixedly installed on the side surface of the elbow nozzle (202), and a cleaning brush (204) is fixedly installed on the side surface of the rotating disk (203).
3. The cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, A drive motor (206) is fixedly installed at one end of the inner shell (1) via a fixing block (205). A drive gear (207) is installed at the output end of the drive motor (206). A driven gear (208) is fixedly installed on the side surface of the elbow nozzle (202). The driven gear (208) and the drive gear (207) mesh with each other.
4. A cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, A fixing ring (310) is fixedly installed on one end of the side surface of the main body shell (1), and a first spring (311) is installed between the sliding ring (307) and the fixing ring (310).
5. A cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, The top rod (309) is rotatably mounted on the side surface of the sliding ring (307) via the second rotating seat (308).
6. A cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, One end of the rotating rod (302) is rotatably mounted on the side surface of the main body shell (1) via the first rotating seat (301).
7. A cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, An elastic telescopic rod (305) is fixedly installed on the side surface of the rotating rod (302). The second roller (306) is rotatably installed on the telescopic end of the elastic telescopic rod (305). The side surfaces of the second roller (306) and the first roller (303) are both provided with grooves (304). The grooves (304) facilitate the normal rolling of the second roller (306) and the first roller (303) in the corrugated structure of the bend.
8. A cleaning device for cleaning central air conditioning ducts according to claim 1, characterized in that, A second spring (403) is installed between the inner side of the lever (401) and the inner wall of the structural groove (405), and a button (404) is movably installed through the outer side of the structural groove (405).