Air tightness detection device for air conditioner compressor

Abstract

The utility model belongs to the technical field of air tightness detection, and particularly relates to an air-condition compressor air tightness detection device, which comprises a sealing box, locking structures are arranged on two sides in the sealing box, each locking structure comprises a chassis, a second fixing disc is mounted at the top end of each chassis, five groups of second slots are formed in the center of each second fixing disc, and each group of second slots is connected with the corresponding locking structure. A limiting column is inserted into the second inserting groove, a sliding block is arranged outside the limiting column, and five first inserting grooves are formed in the outer portion of the other end of the limiting column. According to the utility model, the locking structure is additionally arranged in the device, and the multi-section locking design is adopted, so that the problem of air leakage during air tightness detection can be prevented; a detection structure is additionally arranged on one side of the device, the air tightness of an object to be detected can be judged through the change of air pressure in a machine body, the size of an air leakage part can be judged through the change of a graduated scale on one side when the air tightness is insufficient, and therefore the air tightness detection accuracy of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness detection, in particular to an air tightness detection device for an air-conditioning compressor. Background Art

[0002] The automotive air-conditioning compressor is a key component of automotive air-conditioning. It is like a power source, driving the operation of the entire air-conditioning system. It compresses the refrigerant through mechanical movement, increasing its pressure and temperature. This compression process enables the refrigerant to circulate in the air-conditioning system to achieve heat exchange. Different types of automotive air-conditioning compressors have their own characteristics, such as the scroll type with stable performance and the piston type with simple structure. At the end of the production of the air-conditioning compressor, an air-tightness testing device is required to test the air-tightness of the chassis.

[0003] An airtightness testing device usually consists of a pressure sensor, an air source, a control system, and a testing chamber. Its principle is based on changes in gas pressure. First, a certain pressure of gas is filled into the testing chamber, and then the pressure change in the chamber is monitored by a pressure sensor. If the chamber is well sealed, the pressure will remain stable; if there is a leak, the pressure will drop. When testing the cylinder of a car engine, the cylinder is placed in the testing chamber, and the pressure data is observed after inflation. Similarly, this device is also widely used in the testing of various sealing products to ensure their quality and sealing.

[0004] The existing air tightness detection device uses an inflation method for detection during detection, which may cause air leakage at the connection between the device and the detection object, thereby causing large errors in the detection results, and making the data obtained by the device inaccurate; and the existing air tightness detection device has deficiencies in detection accuracy, which may cause the data obtained during air tightness detection to be inaccurate. Therefore, in response to the above problems, an air tightness detection device for an air-conditioning compressor is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and address the problems existing in the existing equipment, the utility model proposes an air-tightness detection device for an air-conditioning compressor.

[0006] The technical solution adopted by the utility model to solve its technical problem is an air-tightness detection device for an air-conditioning compressor, comprising a sealing box, wherein locking structures are provided on both sides of the interior of the sealing box, the locking structure comprises a chassis, a No. 2 fixing plate is installed on the top of the chassis, five groups of No. 2 slots are opened in the center of the No. 2 fixing plate, a limiting column is inserted in the interior of the No. 2 slots, a sliding block is provided on the outside of the limiting column, and five groups of No. 1 slots are provided on the outside of the other end of the limiting column, the No. 1 slot is a through-hole inside the No. 1 fixing plate, a connecting flange is provided on the top of the No. 1 fixing plate, the connecting flange, the No. 1 fixing plate, the No. 2 fixing plate and the center of the chassis are all provided with a socket, the diameter of the socket is consistent with the diameter of the compressor connection port; the bottom of the locking structure on one side of the sealing box is connected to the support plate, the center of the support plate is provided with a threaded hole, the bottom of the threaded hole is connected to the No. 2 ventilation pipe; the support plate is fixed to the inner wall of the sealing box by the No. 2 fixing bolt; by adding a locking structure design inside the device, the multi-section locking design can prevent the problem of air leakage during the air-tightness detection.

[0007] Preferably, the other end of the No. 2 ventilation pipe is connected to the output end of the vacuum pump, and a switch is provided on the outside of the vacuum pump; one side of the sealing box is connected to the No. 1 ventilation pipe, and the other end of the No. 1 ventilation pipe is connected to the detection box, and an air box is opened inside the detection box, and the bottom end of the air box is connected to the No. 3 ventilation pipe, and the other end of the No. 3 ventilation pipe is provided with a glass tube, and one side of the glass tube is provided with a scale; the inside of the glass tube is provided with a piston, and the top of the piston is provided with a traction rope, and the other end of the traction rope is fixed to the top of the glass tube; by adding a detection structure on one side of the device, the air tightness of the object to be tested can be judged by the change of the air pressure inside the fuselage, and the size of the leakage part can be judged by the change of the scale on one side when insufficient air tightness occurs.

[0008] Preferably, a top cover is provided on the top of the detection box, and positioning plates are provided at the four corners of the top cover; sockets are provided at the four corners of the detection box, and the outside of the sockets is connected to the positioning plates by No. 1 fixing bolts; a No. 1 air box is provided inside the sealed box, and a sealing cover is provided on the top of the No. 1 air box; by adding a top cover to the top of the detection box, subsequent inspection and maintenance of the device can be facilitated, thereby verifying the service life of the device.

[0009] The utility model is beneficial in that:

[0010] The utility model adds a locking structure design inside the device, and the multi-section locking design can prevent the problem of air leakage during the air tightness test; by adding a detection structure on one side of the device, the air tightness of the object to be tested can be judged by the change of the air pressure inside the fuselage, and the size of the leakage part can be judged by the change of the scale on one side when the air tightness is insufficient, thereby increasing the accuracy of the device in the air tightness test. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 Schematic diagram of the overall structure of the device;

[0013] Figure 2 Schematic diagram of the detection structure;

[0014] Figure 3 Schematic diagram of the locking structure;

[0015] Figure 4 Schematic diagram of the airtight box structure;

[0016] Figure 5 Schematic diagram of the airway structure;

[0017] In the figure: 1. Vacuum pump; 2. Switch; 3. Sealing cover; 4. Sealing box; 5. Top cover; 6. No. 1 ventilation pipe; 7. Connecting flange; 8. Socket; 9. No. 2 ventilation pipe; 10. Support plate; 11. No. 1 gas box; 12. Gas box; 13. Pull rope; 14. Scale; 15. Piston; 16. Glass tube; 17. No. 3 ventilation pipe; 19. No. 1 slot; 20. No. 1 fixing plate; 21. Slider; 22. Limiting column; 23. Chassis; 24. No. 2 slot; 25. No. 2 fixing plate; 26. Positioning plate; 27. No. 1 fixing bolt; 28. Socket; 29. ​​Detection box; 30. Threaded hole; 31. No. 2 fixing bolt; 32. Ventilation chamber. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Referring to Figure 1-5 As shown in the drawings, the air-tightness detection device for air conditioner compressor comprises a sealing box 4, locking structures are arranged on both sides of the inside of the sealing box 4, the locking structures comprise a bottom plate 23, a second fixing disc 25 is installed at the top end of the bottom plate 23, five groups of second insertion grooves 24 are formed in the center of the second fixing disc 25, a limiting column 22 is inserted into the inside of the second insertion grooves 24, a sliding block 21 is arranged on the outside of the limiting column 22, five groups of first insertion grooves 19 are arranged on the other end of the outside of the limiting column 22, the first insertion grooves 19 are perforations in the inside of a first fixing disc 20, a connecting flange 7 is arranged at the top end of the first fixing disc 20, insertion openings 8 are formed in the center of the connecting flange 7, the first fixing disc 20, the second fixing disc 25 and the bottom plate 23, the caliber of the insertion openings 8 is consistent with the caliber of the connecting openings of the compressor; a supporting disc 10 is connected to the bottom of the locking structure on one side of the sealing box 4, a threaded hole 30 is formed in the center of the supporting disc 10, a second air pipe 9 is connected to the bottom of the threaded hole 30; the supporting disc 10 is fixed to the inner wall of the sealing box 4 by a second fixing bolt 31; when the device is used for air-tightness detection, the operator places the two ends of the compressor in the inside of the connecting flange 7, then rotates the connecting flange 7, at this time, the limiting column 22 in the inside of the connecting flange 7 moves along the tracks of the second insertion grooves 24 and the first insertion grooves 19 under the driving of the connecting flange 7, at the same time, the sliding block 21 on the outside of the limiting column 22 is driven, at this time, the sliding block 21 starts to converge, in this way, the sliding block 21 clamps and fixes the connecting part of the compressor, then the threaded part of the connecting part of the compressor is screwed into the inside of the threaded hole 30 by rotating the compressor, thus the compressor is fixed.

[0020] The other end of the No. 2 ventilation pipe 9 is connected to the output end of the vacuum pump 1, and a switch 2 is provided on the outside of the vacuum pump 1; one side of the sealing box 4 is connected to the No. 1 ventilation pipe 6, and the other end of the No. 1 ventilation pipe 6 is connected to the detection box 29, and an air box 12 is opened inside the detection box 29, and the bottom end of the air box 12 is connected to the No. 3 ventilation pipe 17, and the other end of the No. 3 ventilation pipe 17 is provided with a glass tube 16, and a scale 14 is provided on one side of the glass tube 16; a piston 15 is provided inside the glass tube 16, and a traction rope 13 is provided at the top of the piston 15, and the other end of the traction rope 13 is fixed to the top of the glass tube 16; a top cover 5 is provided on the top of the detection box 29, and positioning plates 26 are provided at the four corners of the top cover 5; jacks 28 are opened at the four corners of the detection box 29, and the outside of the jacks 28 is connected to the positioning plate 2 by a No. 1 fixing bolt 27 6; There is an air box No. 1 11 inside the sealed box 4, and a sealing cover 3 is provided on the top of the air box No. 1 1; when the compressor is tested for air tightness, the operator closes the sealing cover 3 and isolates the outside unit from the inside of the air box No. 1 11, and then starts the vacuum pump 1 to allow the gas to enter the compressor from the No. 2 ventilation pipe 9. At this time, if the air tightness of the compressor is insufficient, the air will enter the No. 1 air box 11 along the place where the air tightness is insufficient, and then the gas will enter the No. 1 air box 11 along the No. 1 ventilation pipe 6 into the inspection box 19, and then the gas will enter the No. 3 ventilation pipe 17 into the glass tube 16. At this time, the air pressure inside the glass tube 16 will push the piston 15. At this time, the operator observes the rising speed of the piston 15 inside the glass tube 16 to judge the size of the point where the air tightness is insufficient, thereby completing the air tightness test operation of the compressor.

[0021] Working principle: when using the device for air tightness detection, the operator places the two ends of the compressor inside the connecting flange 7, and then rotates the connecting flange 7. At this time, the limiting column 22 inside the connecting flange 7 will move along the trajectory of the second slot 24 and the first slot 19, while driving the slider 21 outside it. At this time, the slider 21 will begin to converge, and in this way the slider 21 clamps and fixes the connection with the compressor. Then, by rotating the compressor, the spiral pattern of the connection enters the threaded hole 30, thereby completing the fixation of the compressor. When the compressor is tested for air tightness, the operator closes the Seal the cover 3 and isolate the outside unit inside the No. 1 air box 11. Then start the vacuum pump 1 to allow the gas to enter the compressor from the No. 2 ventilation pipe 9. At this time, if the airtightness of the compressor is insufficient, the air will enter the No. 1 air box 11 along the place where the airtightness is insufficient. Then the gas will follow the No. 1 ventilation pipe 6 to enter the detection box 19. Then the gas will follow the No. 3 ventilation pipe 17 to enter the glass tube 16. At this time, the air pressure inside the glass tube 16 will push the piston 15. At this time, the operator observes the rising speed of the piston 15 inside the glass tube 16 to judge the size of the point where the airtightness is insufficient, thereby completing the airtightness detection operation of the compressor.

[0022] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An air-tightness detection device for an air-conditioning compressor, characterized in that: The invention comprises a sealing box (4), wherein locking structures are provided on both sides of the interior of the sealing box (4), wherein the locking structure comprises a chassis (23), wherein a No. 2 fixing plate (25) is installed at the top of the chassis (23), wherein the center of the No. 2 fixing plate (25) is provided with five groups of No. 2 slots (24), wherein a limiting column (22) is inserted into the interior of the No. 2 slots (24), wherein a slider (21) is provided on the exterior of the limiting column (22), and wherein the other end of the limiting column (22) is provided with five groups of No. 1 slots (19), wherein the No. 1 slots (19) are through-holes inside the No. 1 fixing plate (20), wherein the top of the No. 1 fixing plate (20) is provided with a connecting flange (7), wherein the center of the connecting flange (7), the No. 1 fixing plate (20), the No. 2 fixing plate (25) and the chassis (23) are all provided with a socket (8), wherein the diameter of the socket (8) is consistent with the diameter of the compressor connection port.

2. The air-conditioning compressor air tightness detection device according to claim 1, characterized in that: The bottom of the locking structure on one side of the sealing box (4) is connected to the support plate (10), a threaded hole (30) is opened in the center of the support plate (10), and the bottom of the threaded hole (30) is connected to the second ventilation pipe (9); the support plate (10) is fixed to the inner wall of the sealing box (4) by the second fixing bolt (31).

3. The air-conditioning compressor air tightness detection device according to claim 2, characterized in that: The other end of the second ventilation pipe (9) is connected to the output end of the air pump (1), and a switch (2) is provided outside the air pump (1).

4. The air-tightness detection device for an air-conditioning compressor according to claim 1, characterized in that: One side of the sealing box (4) is connected to the No. 1 ventilation pipe (6), the other end of the No. 1 ventilation pipe (6) is connected to the detection box (29), an air box (12) is opened inside the detection box (29), the bottom end of the air box (12) is connected to the No. 3 ventilation pipe (17), the other end of the No. 3 ventilation pipe (17) is provided with a glass tube (16), one side of the glass tube (16) is provided with a scale (14); the inside of the glass tube (16) is provided with a piston (15), the top end of the piston (15) is provided with a traction rope (13), the other end of the traction rope (13) is fixed to the top end of the glass tube (16).

5. The air-tightness detection device for an air-conditioning compressor according to claim 4, characterized in that: The top of the detection box (29) is provided with a top cover (5), and the four corners of the top cover (5) are provided with positioning plates (26); the four corners of the detection box (29) are provided with insertion holes (28), and the outside of the insertion holes (28) is connected to the positioning plates (26) by a No. 1 fixing bolt (27).

6. The air-tightness detection device for an air-conditioning compressor according to claim 1, characterized in that: The sealed box (4) has a first air box (11) formed inside, and a sealing cover (3) is provided at the top end of the first air box (11).

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