Rapid detection tool for heat exchanger of automobile air conditioner

Abstract

The utility model discloses a rapid detection tool for an automobile air conditioner heat exchanger, which relates to the technical field of detection tools and comprises a detection box, a movable plate and a fixed plate are arranged in the detection box, a fixed block is arranged on the fixed plate, a fixed cylinder is arranged on the fixed block, a movable rod is arranged outside the fixed cylinder, and the movable rod is connected with the movable plate. One end of the movable rod penetrates into the fixed cylinder, a mounting block is arranged on the movable plate, an exhaust cylinder is arranged on the mounting block, a connector is arranged outside the exhaust cylinder, a piston is arranged in the exhaust cylinder, the movable plate drives the exhaust cylinder to move, so that the connector on the exhaust cylinder is in butt joint with the heat exchange tube, and the push rod drives the piston to move. The piston presses air in the exhaust funnel into the heat exchange tube, the air pressure in the heat exchange tube is increased, a reading is obtained through the barometer, the reading of the barometer is observed after a period of time, the leakage condition of the heat exchange tube can be obtained according to the difference value of the reading, and rapid detection of the heat exchanger is achieved.

Description

A rapid testing tool for automotive air conditioning heat exchangers Technical Field

[0001] This utility model relates to the field of testing tooling technology, specifically a rapid testing tooling for automotive air conditioning heat exchangers. Background Technology

[0002] The automotive air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle. The air conditioning heat exchanger is a device that transfers some of the heat from the hot fluid to the cold fluid. It is an important component of the automotive air conditioning system and the core component of the system. Its main function is to exchange heat between the refrigerant and the air.

[0003] Heat exchange performance is an important indicator for evaluating the quality of automotive air conditioning heat exchangers. The sealing of the internal pipes of the heat exchanger affects its working effect. Therefore, it is necessary to use a testing device to test the sealing of the heat exchanger. Existing testing tools are usually water tests, which can easily introduce water into the heat exchanger and affect its subsequent use. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid testing fixture for automotive air conditioning heat exchangers to solve the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rapid testing fixture for automotive air conditioning heat exchangers includes a testing box and further includes:

[0007] The exhaust pipe has a movable plate and a fixed plate inside the detection box. A fixed block is provided on the fixed plate, and a fixed cylinder is provided on the fixed block. A movable rod is provided outside the fixed cylinder. One end of the movable rod passes through the inside of the fixed cylinder and is provided with a pressure block. An installation block is provided on the movable plate, and an exhaust pipe is provided on the installation block. A connector is provided outside the exhaust pipe. A piston is provided inside the exhaust pipe, and a push rod is provided outside the piston.

[0008] The pressure plate has an installation plate on the movable plate, a pressure gauge on the installation plate, a connecting pipe at the bottom of the pressure gauge, and the connecting pipe is connected to the inside of the exhaust pipe. The fixed plate has a sleeve with a fixing rod on it. A vertical plate is provided between the two fixing rods, and a pressure plate is provided on the vertical plate. The pressure plate has a fixing groove.

[0009] The transmission mechanism, connected to the push rod, can drive the movable plate and piston to move.

[0010] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0011] In one alternative embodiment: the transmission mechanism includes a push plate, a drive rod, and a cylinder. The cylinder is installed inside the detection box. The extension end of the cylinder is provided with a drive rod. One end of the drive rod is provided with a push plate. The push plate is fixedly connected to the push rod. A spring is provided between the push plate and the movable plate.

[0012] In one alternative: a positioning rod is provided on the movable plate, a positioning plate is provided on the outer wall of the movable plate, and a groove that cooperates with the positioning plate is provided inside the detection box.

[0013] In one alternative: a screw is provided on the pressure plate, one end of which passes through another pressure plate and is provided with a nut.

[0014] In one alternative: a locking bolt is provided on the outside of the sleeve, and a telescopic spring is sleeved on the outside of the movable rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The rapid testing fixture for automotive air conditioning heat exchangers uses a transmission mechanism to move a movable plate and piston. The movable plate moves the exhaust pipe, aligning the connector on the exhaust pipe with the heat exchange tube. A push rod moves the piston, which forces the air inside the exhaust pipe into the heat exchange tube. This increases the air pressure inside the heat exchange tube, which is read by a pressure gauge. After a period of time, the pressure gauge reading is observed, and the difference between the readings indicates a leak in the heat exchange tube. This rapid testing of the heat exchanger ensures efficient testing of air conditioning heat exchangers. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of a rapid testing fixture for automotive air conditioning heat exchangers.

[0018] Figure 2 is a cross-sectional view of the test box in the rapid testing tooling for automotive air conditioning heat exchangers.

[0019] Figure 3 is a cross-sectional view of the movable plate in the rapid testing fixture for automotive air conditioning heat exchangers.

[0020] Figure 4 is a schematic diagram of the structure of the fixing plate in the rapid testing tool for automotive air conditioning heat exchangers.

[0021] Figure label annotations: 1-Detection box, 101-Groove, 2-Cover plate, 3-Modible plate, 4-Positioning plate, 5-Mounting block, 6-Exhaust pipe, 601-Connector, 602-Piston, 7-Mounting plate, 8-Pressure gauge, 801-Connecting pipe, 9-Push rod, 10-Push plate, 11-Spring, 12-Drive rod, 13-Cylinder, 14-Positioning rod, 15-Vertical plate, 16-Fixing plate, 17-Heat exchanger body, 18-Heat exchange tube, 19-Fixing rod, 20-Sleeve, 21-Pressure plate, 211-Fixing groove, 22-Screw, 23-Nut, 24-Locking bolt, 25-Fixing block, 26-Fixing cylinder, 27-Pressure block, 28-Modible rod, 29-Telescopic spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. In the drawings and description, similar or identical parts are referred to by the same reference numerals, and in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of this utility model. Any obvious modifications or changes made to this utility model do not depart from its spirit and scope.

[0023] In one embodiment, as shown in Figures 1-4, a rapid testing fixture for an automotive air conditioning heat exchanger includes a testing box 1, and further includes:

[0024] The exhaust stack 6, the detection box 1 is externally provided with a cover plate 2, the detection box 1 is internally provided with a movable plate 3 and a fixed plate 16, the fixed plate 16 is fixedly provided inside the detection box 1, the fixed plate 16 is provided with a fixing block 25, the fixing block 25 is provided with a fixing cylinder 26, the fixing block 25 slides along a square groove and is fixed by bolts, which facilitates the adjustment of the position of the fixing cylinder 26 so that heat exchange tubes 18 with different spacings can be inserted into the fixing cylinder 26. The fixed cylinder 26 is externally provided with a movable rod 28, the movable rod 28... One end of the tube 8 is inserted into the fixed cylinder 26 and is provided with a pressure block 27. The pressure block 27 limits the heat exchange tube 18 that passes through. The movable plate 3 is provided with an installation block 5, which corresponds to the position of the fixed cylinder 26. An exhaust pipe 6 is provided on the installation block 5. A connector 601 is provided on the outside of the exhaust pipe 6. One end of the heat exchange tube 18 is connected to the connector 601, so that the air inside the exhaust pipe 6 can be forced into the heat exchange tube 18. A piston 602 is provided inside the exhaust pipe 6, and a push rod 9 is provided on the outside of the piston 602.

[0025] The pressure plate 21, the movable plate 3 is provided with an installation plate 7, the installation plate 7 is provided with a pressure gauge 8, the bottom of the pressure gauge 8 is provided with a connecting pipe 801, the connecting pipe 801 is connected to the inside of the exhaust pipe 6, the fixed plate 16 is provided with a sleeve 20, the sleeve 20 is provided with a fixing rod 19, the two fixing rods 19 are provided with a vertical plate 15, the vertical plate 15 is provided with a pressure plate 21, the pressure plate 21 is provided with a fixing groove 211, the pressure plate 21 squeezes and fixes the heat exchange tube 18 that passes through, to prevent the heat exchange tube 18 from moving during testing;

[0026] The transmission mechanism, connected to the push rod 9, can drive the movable plate 3 and the piston 602 to move.

[0027] The automotive air conditioning heat exchanger rapid testing fixture drives the movable plate 3 and piston 602 to move via a transmission mechanism. The movable plate 3 drives the exhaust pipe 6 to move, so that the connector 601 on the exhaust pipe 6 is aligned with the heat exchange tube 18. The push rod 9 drives the piston 602 to move, so that the piston 602 forces the air inside the exhaust pipe 6 into the heat exchange tube 18. The air pressure inside the heat exchange tube 18 increases, and the reading is obtained through the pressure gauge 8. The piston 602 stops moving, and the reading of the pressure gauge 8 is observed after a period of time. The leakage of the heat exchange tube 18 can be determined based on the difference between the two readings. As an example, the left, right, up, and down positions of the various components shown in the attached figure are only one arrangement method. The specific positions are set according to specific needs.

[0028] In one embodiment, as shown in Figures 1-3, the transmission mechanism includes a push plate 10, a drive rod 12, and a cylinder 13. The cylinder 13 is installed inside the detection box 1. The extension end of the cylinder 13 is provided with a drive rod 12. One end of the drive rod 12 is provided with a push plate 10. The push plate 10 is fixedly connected to the push rod 9. A spring 11 is provided between the push plate 10 and the movable plate 3. The cylinder 13 drives the push plate 10 to move through the drive rod 12.

[0029] In one embodiment, as shown in Figures 1-3, a positioning rod 14 is provided on the movable plate 3, a positioning plate 4 is provided on the outer wall of the movable plate 3, and a groove 101 that cooperates with the positioning plate 4 is provided inside the detection box 1. The positioning plate 4 slides along the groove 101, which can guide the movement of the movable plate 3.

[0030] In one embodiment, as shown in Figures 1-4, a screw 22 is provided on the pressure plate 12. One end of the screw 22 passes through another pressure plate 12 and is provided with a nut 23. Tightening the nut 23 causes the two sets of pressure plates 12 to move closer to each other, thereby squeezing and fixing the heat exchange tube 18 that passes through.

[0031] In one embodiment, as shown in Figures 1-4, a locking bolt 24 is provided on the outside of the sleeve 20, and a telescopic spring 29 is sleeved on the outside of the movable rod 28. The telescopic spring 29 drives the two sets of movable rods 28 to move closer to each other, and the heat exchange tube 18 is limited by the pressure block 27.

[0032] The above embodiments of this utility model provide a rapid testing fixture for automotive air conditioning heat exchangers. The heat exchanger 17 is placed inside the testing box 1, and the heat exchange tube 18 passes through the fixed cylinder 26. The heat exchange tube 18 is fixed by the pressure plate 21. The cylinder 13 drives the push plate 10 to move through the drive rod 12. The push plate 10 moves by pressing the movable plate 3 through the spring 11. The movable plate 3 drives the exhaust pipe 6 to move, so that the connector 601 on the exhaust pipe 6 connects with the heat exchange tube 18. After the movable plate 3 can no longer move, the push plate 10 continues to press the push rod 9, so that the push rod 9 drives the piston 602 to move. The piston 602 forces the air inside the exhaust pipe 6 into the heat exchange tube 18. The air pressure inside the heat exchange tube 18 increases, and the reading is obtained through the pressure gauge 8. The sealing performance of the heat exchange tube 18 can be tested based on the reading.

[0033] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A rapid testing fixture for automotive air conditioning heat exchangers, comprising a testing box, characterized in that, Also includes: The exhaust stack includes a movable plate and a fixed plate inside the detection box. A fixed block is mounted on the fixed plate, and a fixed cylinder is mounted on the fixed block. A movable rod is mounted outside the fixed cylinder, with one end of the movable rod penetrating into the fixed cylinder and having a pressure block attached. An installation block is mounted on the movable plate, and an exhaust stack is mounted on the installation block. A connector is mounted outside the exhaust stack. A piston is located inside the exhaust stack, and a push rod is mounted outside the piston. A pressure plate is mounted on the movable plate, and a pressure gauge is mounted on the mounting plate. A connecting pipe is located at the bottom of the pressure gauge and connects to the inside of the exhaust stack. A sleeve is mounted on the fixed plate, and a fixed rod is mounted on the sleeve. A vertical plate is positioned between two fixed rods, and a pressure plate is mounted on the vertical plate. A fixing groove is formed on the pressure plate. A transmission mechanism, connected to the push rod, is capable of moving the movable plate and the piston.

2. The rapid testing fixture for automotive air conditioning heat exchangers according to claim 1, characterized in that, The transmission mechanism includes a push plate, a drive rod, and a cylinder. The cylinder is installed inside the detection box. The extension end of the cylinder is equipped with a drive rod. One end of the drive rod is equipped with a push plate. The push plate is fixedly connected to the push rod. A spring is installed between the push plate and the movable plate.

3. The rapid testing fixture for automotive air conditioning heat exchangers according to claim 1, characterized in that, The movable plate is provided with a positioning rod, the outer wall of the movable plate is provided with a positioning plate, and the inside of the detection box is provided with a groove that cooperates with the positioning plate.

4. The rapid testing fixture for automotive air conditioning heat exchangers according to claim 3, characterized in that, A screw is provided on the pressure plate, and one end of the screw passes through another pressure plate and is fitted with a nut.

5. The rapid testing fixture for automotive air conditioning heat exchangers according to claim 1, characterized in that, The sleeve is provided with a locking bolt, and the movable rod is provided with a telescopic spring.

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