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Pressure release valve for automobile air conditioning system

A technology for automotive air-conditioning systems and pressure relief valves, applied in the field of pressure relief valves, can solve problems such as unstable working conditions and inability to solve external leakage well

Pending Publication Date: 2022-08-05
SHANGHAI ZHONGYUAN FUEL RAIL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN 214743587 U discloses a pressure relief valve for automotive air-conditioning systems, including a valve body, a chamber is provided in the middle of the valve body, a sealing seat is provided at the insertion end of the valve body, and a pressure relief channel is provided in the middle of the sealing seat; The chamber of the valve body is provided with a sealing ball, a slider and a spring in turn. The slider is movably installed in the chamber. The slider is provided with an exhaust through hole. The sealing ball is arranged between the slider and the sealing seat. One end of the spring It abuts against the slider, and the other end of the spring is limited by the limiter. The pressure relief valve can not solve the problem of external leakage by setting ring teeth at its outermost end. Under ultra-high pressure conditions, Working conditions are not stable

Method used

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  • Pressure release valve for automobile air conditioning system
  • Pressure release valve for automobile air conditioning system
  • Pressure release valve for automobile air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 , a pressure relief valve for an automobile air conditioning system, comprising a valve body 1 with a chamber, the chamber of the valve body 1 is provided with a sealing ball 4, a sliding block 2 and a spring 5, and the sliding block 2 is movably installed on the In the chamber, the slider 2 is provided with an exhaust through hole, one end of the spring 5 is in contact with the slider 2, and the other end of the spring 5 is limited by the limiting member. like Figure 4 , the limiting member is specifically the adjusting nut 3, the adjusting nut 3 is screwed into the chamber of the valve body 1, and is located at the outer end of the valve body 1, the adjusting nut 3 is provided with a through hole in the middle, and the pressure is relieved by adjusting the position of the adjusting nut 3 Adjustment of valve pressure. Both the slider 2 and the adjustment nut 3 are provided with a sleeve structure for installing the spring 5 , and the ends of the spring...

Embodiment 2

[0035] like figure 2 In this embodiment, compared with Embodiment 1, a sealing seat 8 is also provided between the sealing ball 4 and the plug of the valve body 1. The sealing seat 8 is installed in the cavity of the valve body 1 near the plug through the gland 9. The sealing seat There is a channel in the middle of 8, and the sealing ball 4 abuts against the channel port of the sealing seat 8. The setting of the sealing seat 8 can further improve the sealing performance of the internal channel of the pressure relief valve, which is convenient for flexible adjustment according to actual needs.

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PUM

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Abstract

The pressure release valve for the automobile air conditioning system comprises a valve body, a sealing ball, a sliding block and a spring, the sliding block is movably installed in a cavity, the sliding block is provided with an exhaust through hole, one end of the spring abuts against the sliding block, and the other end of the spring is limited by a limiting piece; an integrally-formed plug is arranged at the insertion end of the valve body, a pressure relief channel is formed in the center of the plug, and the sealing ball is arranged between the sliding block and the end side of the pressure relief channel. The front section of the inserting end of the valve body is provided with external threads for installation, the periphery of the valve body is provided with a convex edge pressing plate protruding out of the valve body at the rear portion of the external threads, and the convex edge pressing plate is provided with an annular tooth structure on the end face of the inserting end of the valve body. The pressure release valve is installed on an opponent piece, is screwed in the opponent piece through external thread tightening torsion, is installed more firmly by means of the pressing effect of the convex edge pressing plate protruding out of the valve body on the rear portion, can better solve the problem of external leakage, is more stable in structure and can be used under the working condition of bearing larger pressure.

Description

technical field [0001] The invention relates to a valve body structure, in particular to a pressure relief valve used in an automobile air conditioning system. Background technique [0002] The working refrigerant of automobile air conditioning system usually adopts CO 2 , CO 2 The critical pressure is high (Pc=7.38MPa) and the critical temperature is low (Tc=31.25℃). In order to achieve good comprehensive refrigeration performance, the refrigeration system using carbon dioxide as the refrigerant must work in the transcritical region, the working pressure exceeds the critical pressure, and Compared with the current car air conditioning system, the working pressure is much higher. [0003] Patent CN 214743587 U discloses a pressure relief valve for automobile air-conditioning system, comprising a valve body, a chamber is arranged in the middle of the valve body, a sealing seat is arranged at the installation and insertion end of the valve body, and a pressure relief channel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/04F16K17/06
CPCF16K17/0406F16K17/06
Inventor 卢春鸿宋晓伟黄丽
Owner SHANGHAI ZHONGYUAN FUEL RAIL MFG