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Electromagnetic valve

A solenoid valve and valve body technology, applied in the field of solenoid valves, can solve the problems of expansion stress of seals, damage to the mechanical structure of seals, relaxation and other problems, and achieve the effect of good applicability

Inactive Publication Date: 2018-05-29
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in CO 2 In the automotive air conditioning system, too high temperature will cause the seal to expand and stress relaxation, and too high pressure will damage the mechanical structure of the seal

Method used

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Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] In this article, terms such as "upper, lower, left, right" are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may also change accordingly depending on the drawings. It is understood as an absolute limitation on the scope of protection; moreover, relative terms such as "first" and "second" are only used to distinguish one from another component with the same name, and do not necessarily require or No such actual relationship or order between these components is implied.

[0042] Please refer to figure 1 , figure 2 , figure 1 It is a structural schematic diagram of a solenoid valve disclosed in an embodiment of the present invention; figure 2 for figu...

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Abstract

The invention discloses an electromagnetic valve. The electromagnetic valve comprises a valve body (1) and a valve base (2); the valve body (1) is provided with a first sealing surface; the valve base(2) is provided with a second sealing surface; the first sealing surface and / or the second sealing surface are provided with at least one annular projection (5) projected on the first sealing surfaceand / or the second sealing surface; through a pressing part, the valve base and the valve body are mutually pressed and butted; the annular projection (5) is embedded in the butted second sealing surface and / or the first sealing surface under the effect of pressing force; and hard sealing is formed between the first sealing surface and the second sealing surface. The electromagnetic valve achievesthe sealing purpose through elastic plastic deformation between two parts, needing to be sealed, through external force; and the sealing structure can bear higher working temperature and higher working pressure, so that stable and reliable work in a carbon dioxide vehicle air conditioning system can be achieved.

Description

technical field [0001] The invention relates to the technical field of refrigerant control valves, in particular to solenoid valves used in carbon dioxide automotive air-conditioning systems. Background technique [0002] Problems such as the destruction of the atmospheric ozone layer and global warming have attracted more and more attention. In order to solve this problem, the automobile industry has successfully replaced the Freon refrigerant that pollutes the environment with R134a refrigerant in the automobile air-conditioning system, but The ability of R134a refrigerant to resist environmental pollution is still limited, and it has also become the object of restricted use. [0003] According to different sources, refrigerants can be divided into two categories: natural refrigerants and synthetic refrigerants. Natural refrigerants refer to substances that exist naturally in nature and can be used as working media in refrigeration engineering. They are non-polluting and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/00F16K51/00
Inventor 汪立新周文荣
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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