Heating and ventilation electronic expansion valve leakage test tool

Abstract

The utility model provides a leakage testing tool for a heating and ventilation electronic expansion valve, and belongs to the field of leakage testing of heating and ventilation electronic expansion valves. A test component; the test assembly comprises a mounting groove penetrating through the main mounting block, a product to be tested is positioned through the guide block and extends into the two positioning blocks, upward force is applied to the ascending piston, a rectangular sealing ring mounted at the upper end of the ascending piston is compressed, so that the rectangular sealing ring tightly reports the outer wall of the product to be tested to realize sealing, and a medium is introduced to perform sealing detection; after the detection is finished, the applied force is cut off, and the original position is restored under the action of the reset spring. The test tool provided by the utility model can replace manual press-fitting of the valve core, solves the problem of leakage detection of the heating and ventilation electronic expansion valve, can realize quick disassembly and quick change integrally, is convenient and quick, improves the production efficiency, ensures the product quality, is simple and compact in tool design, stable in test effect, high in durability and high in efficiency, saves time, and has popularization significance.

Description

Technical Field

[0001] This utility model relates to the field of HVAC electronic expansion valve leakage testing technology, and in particular to a HVAC electronic expansion valve leakage testing fixture. Background Technology

[0002] In the existing manufacturing process of HVAC electronic expansion valves, leakage detection is a crucial step. Traditional leakage detection methods often rely on manual operation, especially the manual pressing of the valve core, which is not only labor-intensive but also inefficient, making it difficult to meet the needs of large-scale production.

[0003] In addition, manual operation may lead to unstable test results due to factors such as improper operation or fatigue, which in turn affects product quality.

[0004] Therefore, this application proposes a leak testing fixture for HVAC electronic expansion valves. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a leak testing fixture for HVAC electronic expansion valves.

[0006] An embodiment of this utility model provides a leak testing fixture for HVAC electronic expansion valves, comprising:

[0007] Main installation block;

[0008] The test component includes a mounting slot that runs through the main mounting block. A repositionable upward piston is movably mounted within the mounting slot. Positioning blocks are mounted on the upper end of each mounting slot, and a guide block is mounted on one of the positioning blocks. The product under test is positioned by the guide block and extends into the two positioning blocks. An upward force is applied to the upward piston, compressing the rectangular sealing ring mounted on the upper end of the upward piston, causing it to tighten around the outer wall of the product under test to achieve a seal. A medium is then introduced for seal testing. After the test, the applied force is disconnected, and the product returns to its original position under the action of a return spring.

[0009] Furthermore, the positioning block is provided with a recessed hole that communicates with the upward piston, and the product being tested is located inside the recessed hole.

[0010] Furthermore, the guide block has a notch at its upper end, and when the product under test is installed in the positioning block, the product under test is secured in the notch.

[0011] Furthermore, an O-ring is installed between the positioning block and the main mounting block.

[0012] Furthermore, a return spring is installed between the upward piston and the positioning block, and the return spring is used to reset the upward piston.

[0013] Furthermore, the bottom of the mounting groove is stepped, and the bottom of the upward piston is provided with a mating mechanism.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model's testing fixture can replace manual valve core pressing, solving the problem of leakage detection in HVAC electronic expansion valves. The fixture allows for quick disassembly and replacement, which is convenient and fast, improving production efficiency and ensuring product quality. The fixture has a simple and compact design, stable testing results, high durability and efficiency, and saves time, making it worthy of widespread application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a leakage test fixture for a heating, ventilation, and air conditioning electronic expansion valve as described in this embodiment of the present invention.

[0017] Figure 2 This is a side view of a leak testing fixture for a heating, ventilation, and air conditioning electronic expansion valve as described in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram (AA) of a leak testing fixture for a heating, ventilation, and air conditioning electronic expansion valve as described in this embodiment of the present invention.

[0019] In the above attached figures: 1 main mounting block, 2 guide block, 3 positioning block, 4 upward piston, 5 O-ring, 6 return spring, 7 rectangular sealing ring, 8 mounting groove. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-3 As shown in the figure, this utility model embodiment proposes a leakage testing fixture for HVAC electronic expansion valves, comprising:

[0022] Main mounting block 1;

[0023] The test component includes a mounting slot 8 that runs through the main mounting block 1. A repositionable upward piston 4 is movably mounted in the mounting slot 8. The bottom of the mounting slot 8 is stepped. The bottom of the upward piston 4 is fitted to prevent the upward piston 4 from falling off. A reset spring 6 is installed between the upward piston 4 and the positioning block 3. The reset spring 6 is used to reset the upward piston 4.

[0024] Positioning blocks 3 are installed on the upper end of each mounting slot 8. O-rings 5 ​​are installed between the positioning blocks 3 and the main mounting blocks 1 to ensure sealing after installation. The positioning blocks 3 have sinkholes that communicate with the upward piston 4 through the top and bottom. The product under test is located in the sinkhole. A guide block 2 is installed on one of the positioning blocks 3. The guide block 2 has a notch at its upper end. When the product under test is installed in the positioning block 3, the product under test is locked in the notch.

[0025] The tested product (tubes A and B) is positioned by guide block 2 and extends into the two positioning blocks 3, applying an upward force to the upward piston 4, compressing the rectangular sealing ring 7 installed on the upper end of the upward piston 4, so that it tightens the outer wall of the tested product to achieve a seal, and the medium (gas) is introduced to perform a seal test; after the test is completed, the applied force is disconnected, and the product returns to its original position under the action of the return spring 6.

[0026] In summary, the testing fixture of this utility model can replace manual valve core pressing, solving the problem of leakage detection in HVAC electronic expansion valves. It allows for quick disassembly and replacement, which is convenient and fast, improving production efficiency and ensuring product quality. The fixture has a simple and compact design, stable testing results, high durability and efficiency, and saves time, making it worthy of widespread application.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heating, ventilation, and electronic expansion valve leak test tool, characterized by, The utility model relates to a test device for sealing test of products, which comprises: a main mounting block (1); a test assembly; the test assembly comprises mounting grooves (8) arranged through the main mounting block (1), a resettable up-piston (4) movably mounted in the mounting grooves (8), positioning blocks (3) mounted at the upper ends of the mounting grooves (8), and a guide block (2) mounted on one of the positioning blocks (3); the product to be tested is positioned by the guide block (2) and extends into the two positioning blocks (3), an upward force is applied to the up-piston (4), a rectangular sealing ring (7) mounted at the upper end of the up-piston (4) is compressed to tightly seal the outer wall of the product to be tested, and a medium is introduced for sealing test; after the test, the force is removed, and the up-piston (4) returns to the original position under the action of a reset spring (6).

2. The leak test tool for a heating and ventilation electronic expansion valve according to claim 1, wherein Wherein: a subsidence hole communicating with the up-piston (4) is arranged through the positioning block (3) from top to bottom, and the product to be tested is located in the subsidence hole.

3. The leak test tool for a heating and ventilation electronic expansion valve according to claim 1, wherein Wherein: a notch is arranged at the upper end of the guide block (2), and the product to be tested is buckled in the notch when the product to be tested is mounted in the positioning block (3).

4. The electronic expansion valve leak test tool of claim 1, wherein, Wherein: an O-ring (5) is mounted between the positioning block (3) and the main mounting block (1).

5. The electronic expansion valve leak test tool of claim 1, wherein, Wherein: a reset spring (6) is mounted between the up-piston (4) and the positioning block (3), and the reset spring (6) is used for resetting the up-piston (4).

6. The electronic expansion valve leak test fixture of claim 1, wherein, Wherein: the bottom of the mounting groove (8) is in a stepped shape, and the bottom of the up-piston (4) is arranged in a matching manner.

Images