A sealing test device for air conditioning duct of vehicle

Abstract

The utility model relates to sealing test equipment technical field, concretely is a kind of sealing test device of vehicle air conditioner air duct, including water tank, the inside of water tank is provided with the fixing mechanism for fixing to air duct and for moving air duct to the bottom of water tank, the outside of water tank is fixedly connected with the inflation mechanism for plugging up air duct air port and inflating to its inside, the fixing mechanism includes the moving plate that slides up and down in water tank inside, the top surface of moving plate is provided with clamp. In the utility model, the air port of air duct is plugged up with stopper, then air duct is sunk into the water of water tank, and air duct is inflated, the pressure in air duct is increased, if there is gap on air duct, and regardless of the size of gap, gas in air duct flows out from air duct and enters water quickly and generates bubble quickly, so as to facilitate staff to locate the leakage point of air duct in short time, thus the sealing detection efficiency of air duct can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing testing equipment, specifically a sealing testing device for automotive air conditioning ducts. Background Technology

[0002] Automotive air conditioning systems are used to adjust and control the temperature, humidity, air cleanliness, and airflow inside a car cabin to the optimal state, providing a comfortable riding environment for passengers. The air duct assembly is a key component of the automotive air conditioning system. It is responsible for delivering the air processed by the air conditioning system to various air outlets inside the vehicle, while regulating the temperature, humidity, and airflow direction. Since most automotive air conditioning ducts are made of plastic and manufactured through injection molding, the duct consists of two shells bonded together. To prevent air leakage during use, a sealing test is required after the duct is injection molded.

[0003] Currently, the airtightness test for air ducts usually involves blocking all the air vents in the duct and then placing it in water to observe the bubbles. If bubbles are generated on the outside of the air duct, it indicates that the connection of the air duct is not completely sealed. Although the airtightness of the air duct can be detected by immersion in water, it is not sensitive enough to detect some minor leaks, which can easily lead to misleading results. The air duct needs to be immersed in water for a longer time to detect whether there is a leak. Utility Model Content

[0004] The purpose of this invention is to provide a sealing test device for automotive air conditioning ducts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A sealing test device for an automotive air conditioning duct includes a water tank. The inside of the water tank is provided with a fixing mechanism for fixing the duct and for moving the duct to the bottom of the water tank. The outside of the water tank is fixedly connected with an inflation mechanism for blocking the air outlet of the duct and inflating it. The fixing mechanism includes a movable plate that slides up and down inside the water tank, and a clamp is provided on the top surface of the movable plate; The inflation mechanism includes a rectangular shell fixedly connected to the outside of the water tank. Multiple hoses are fixedly inserted through the inner top surface of the rectangular shell, and a plug is fixedly inserted through one end of each hose.

[0006] Furthermore, L-shaped plates are fixedly connected to both ends of the top surface of the movable plate, and a sliding rod is fixedly connected between the L-shaped plate and the movable plate. Connecting blocks that slide through the sliding rod at the corresponding positions are fixedly connected to both ends of the clamp, and a spring is fixedly connected between the connecting block and the L-shaped plate at the corresponding position.

[0007] Furthermore, the top surface of the clamp is fixedly connected to a fixing frame.

[0008] Furthermore, the water tank has rectangular frames fixedly connected to both ends of its interior, and a lead screw is rotatably connected between the two ends of the rectangular frames. A slider fixedly connected to a movable plate is screwed through the outer wall of the lead screw.

[0009] Furthermore, the top end of the lead screw penetrates the top surface of the rectangular frame at the corresponding position, and a motor is fixedly connected to the top surface of the rectangular frame. The output end of the motor is fixedly connected to the lead screw at the corresponding position.

[0010] Furthermore, an air pump is fixedly connected to the side of the water tank, the output end of the air pump is fixedly connected to the inside of the rectangular shell through a connecting pipe, and a switch valve is fixedly connected to the bottom of the outer wall of the hose.

[0011] Furthermore, the blockage is made of silicone and is press-fitted with the air vent of the air duct.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By blocking the air vents of the air duct, submerging the air duct in the water tank, and filling the air duct with air, the pressure inside the air duct increases. If there is a gap in the air duct, regardless of the size of the gap, the gas inside the air duct will quickly flow out of the air duct and enter the water, quickly generating bubbles. This makes it easy for staff to quickly locate the leak point of the air duct in a short time, thus improving the efficiency of air duct sealing test. By controlling the air intake of the hose at the corresponding location through the switching valve, the sealing performance of multiple air ducts can be tested simultaneously, thereby rapidly improving the efficiency of air duct sealing tests. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the fixing mechanism in this utility model; Figure 3 This is a schematic diagram of the movable plate in this utility model; Figure 4 This is a schematic diagram of the inflation mechanism in this utility model.

[0014] In the diagram: 1. Water tank; 2. Fixing mechanism; 21. Moving plate; 22. Clamp; 23. L-shaped plate; 24. Slide rod; 25. Spring; 26. Fixing frame; 27. Rectangular frame; 28. Slider; 29. ​​Motor; 3. Inflation mechanism; 31. Rectangular shell; 32. Hose; 33. Block; 34. Air pump; 35. Switch valve. Detailed Implementation

[0015] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 - Figure 4 In this embodiment of the present invention, a sealing test device for an automotive air conditioning duct includes a water tank 1. The water tank 1 is provided with a fixing mechanism 2 for fixing the duct and moving the duct to the bottom of the water tank 1. An inflation mechanism 3 for blocking the air vent of the duct and inflating it is fixedly connected to the outside of the water tank 1. The fixing mechanism 2 includes a movable plate 21 that slides up and down inside the water tank 1. A clamp 22 is provided on the top surface of the movable plate 21. The inflation mechanism 3 includes a rectangular shell 31 fixedly connected to the outside of the water tank 1. A plurality of hoses 32 are fixedly inserted through the inner top surface of the rectangular shell 31. A plug 33 is fixedly inserted through one end of each hose 32.

[0017] Specifically, firstly, the clamp 22 is made into a transparent structure (clamp 22 is existing technology and will not be described in detail here). Then, the clamp 22 is moved upwards and separated from the moving plate 21 with a certain gap. The air duct to be tested is placed on the moving plate 21. Then, the clamp 22 is released, so that the air duct is clamped between the clamp 22 and the moving plate 21. The air vents of the air duct are blocked by the plug 33. Then, the moving plate 21 is moved downwards until the air duct is completely submerged in the water tank 1. Air is injected into the rectangular shell 31, so that the gas enters the air duct through multiple hoses 32. As gas is continuously injected, the internal pressure gradually increases. Once the pressure inside the duct reaches a certain level using an external pressure gauge, gas injection stops. If there is a gap at the duct connection, the gas inside the duct will flow out rapidly from the gap, generating bubbles (regardless of the size of the gap, the gas flowing out from the gap is very fast as the air pressure inside the duct increases; however, the larger the gap, the larger the bubbles). This allows staff to quickly locate the leak point in the duct within a short time, thus improving the efficiency of duct sealing testing. Example

[0018] like Figure 2 and Figure 3As shown, in this embodiment, L-shaped plates 23 are fixedly connected to both ends of the top surface of the movable plate 21. A sliding rod 24 is fixedly connected between the L-shaped plate 23 and the movable plate 21. A connecting block that slides through the sliding rod 24 at the corresponding position is fixedly connected to both ends of the clamp 22. A spring 25 is fixedly connected between the connecting block and the L-shaped plate 23 at the corresponding position. A fixing frame 26 is fixedly connected to the top surface of the clamp 22. A rectangular frame 27 is fixedly connected to both ends of the inside of the water tank 1. A lead screw is rotatably connected between the two ends of the inside of the rectangular frame 27. A slider 28 fixedly connected to the movable plate 21 is screwed through the outer wall of the lead screw. The top end of the lead screw passes through the top surface of the rectangular frame 27 at the corresponding position. A motor 29 is fixedly connected to the top surface of the rectangular frame 27. The output end of the motor 29 is fixedly connected to the lead screw at the corresponding position.

[0019] In this embodiment, the operator holds the fixing frame 26 and lifts it up, which can move the clamp 22 upward and separate it from the moving plate 21. Then, the air duct to be tested is placed between the clamp 22 and the moving plate 21, and the clamp 22 is released. At this time, the clamp 22 fixes the air duct between the clamp 22 and the moving plate 21 under the elastic action of the two springs 25. Then, driven by the two motors 29 (a housing can be installed on the outside of the motors 29 to prevent water vapor from entering the motors 29), the two lead screws can be rotated synchronously. The synchronous rotation of the two lead screws can cause the moving plate 21 to move the air duct to be tested downward and sink into the water in the water tank 1. Example

[0020] like Figure 4 As shown, in this embodiment, an air pump 34 is fixedly connected to the side of the water tank 1. The output end of the air pump 34 is fixedly connected to the inside of the rectangular shell 31 through a connecting pipe. A switch valve 35 is fixedly connected to the bottom of the outer wall of the hose 32. The plug 33 is made of silicone and is press-fitted to the air vent of the air duct.

[0021] In this embodiment, by interfering with the air outlet of the air duct through the plug 33, the air outlet of the air duct can be completely blocked. Then, by driving the air pump 34, air can be injected into the rectangular shell 31, so that the pressure inside the air duct gradually increases. If air bubbles are generated, it indicates that the air duct is not sealed tightly. The air intake of the hose 32 at the corresponding position can be controlled by the switch valve 35, so that the sealing performance of multiple air ducts can be tested at the same time. (The air outlet of each air duct can be plugged with a plug, leaving only one air outlet, and this air outlet can be plugged with the plug 33. Then, the air pump 34 can be used to inject air into multiple air ducts at the same time, thereby realizing the simultaneous testing of the sealing performance of multiple air ducts.) This can quickly improve the efficiency of air duct sealing test.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sealing test device for automotive air conditioning ducts, characterized in that, Includes a water tank (1), the inside of which is provided a fixing mechanism (2) for fixing the air duct and for moving the air duct to the bottom of the water tank (1), and the outside of the water tank (1) is fixedly connected to an air filling mechanism (3) for blocking the air duct opening and filling it with air. The fixing mechanism (2) includes a movable plate (21) that slides up and down inside the water tank (1), and a clamp (22) is provided on the top surface of the movable plate (21). The inflation mechanism (3) includes a rectangular shell (31) fixedly connected to the outside of the water tank (1). Multiple hoses (32) are fixedly inserted through the inner top surface of the rectangular shell (31), and a plug (33) is fixedly inserted through one end of each hose (32).

2. The sealing test device for automotive air conditioning ducts according to claim 1, characterized in that, Both ends of the top surface of the movable plate (21) are fixedly connected to L-shaped plates (23), and a sliding rod (24) is fixedly connected between the L-shaped plate (23) and the movable plate (21). Both ends of the clamp (22) are fixedly connected to connecting blocks that slide through the sliding rod (24) at the corresponding position. A spring (25) is fixedly connected between the connecting block and the L-shaped plate (23) at the corresponding position.

3. The sealing test device for automotive air conditioning ducts according to claim 2, characterized in that, The top surface of the clamp (22) is fixedly connected to a fixing frame (26).

4. The sealing test device for automotive air conditioning ducts according to claim 2, characterized in that, The water tank (1) has a rectangular frame (27) fixedly connected to both ends of its interior. A screw rod is rotatably connected between the two ends of the rectangular frame (27). A slider (28) is fixedly connected to a movable plate (21) through the outer wall of the screw rod.

5. The sealing test device for automotive air conditioning ducts according to claim 4, characterized in that, The top end of the lead screw passes through the top surface of the rectangular frame (27) at the corresponding position. A motor (29) is fixedly connected to the top surface of the rectangular frame (27), and the output end of the motor (29) is fixedly connected to the lead screw at the corresponding position.

6. The sealing test device for automotive air conditioning ducts according to claim 5, characterized in that, An air pump (34) is fixedly connected to the side of the water tank (1). The output end of the air pump (34) is fixedly connected to the inside of the rectangular shell (31) through a connecting pipe. A switch valve (35) is fixedly connected to the bottom of the outer wall of the hose (32).

7. The sealing test device for automotive air conditioning ducts according to claim 6, characterized in that, The blockage (33) is made of silicone and is press-fitted to the air vent of the air duct.

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