Thermal expansion valve

A thermal expansion valve and valve hole technology, applied in the field of thermal expansion valves, can solve the problems of insufficient welding reliability, difficulty in the stable welding state of the hole on the outer wall and the head, and achieve reliable welding, prevent poor welding, and reliable welding Effect
CN1932344AActive Publication Date: 2007-03-21ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
Publication Date
2007-03-21

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Abstract

The present invention relates to a thermal expansion valve. It includes the following several main portions: valve core, diaphragm, air tight chamber and seal head. Said invention also provides the concrete structure of the above-mentioned every portion and the connection mode of all the above-mentioned portions. Besides, said also provides the concrete working principle of said thermal expansion valve and its concrete application method.
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Description

technical field

[0001] The invention relates to a thermal expansion valve suitable for an air-conditioning system, especially a structure in which a sealing head is used to seal a filling hole of an air box head (also called a power head) part to seal a temperature-sensitive gas in an airtight chamber. Background technique

[0002] There are many types of thermal expansion valves used in refrigeration cycles, such as JP-Ping 8-226567 bulletin. This thermal expansion valve includes the following: the high-pressure refrigerant passage for the refrigerant to flow into the evaporator and the low-pressure refrigerant passage for the refrigerant to flow out of the evaporator, A valve body with a valve hole in the middle of the above-mentioned high-pressure refrigerant flow path, a valve core part that changes the opening of the valve hole by touching or leaving the valve hole of the valve body, and a drive rod to drive the valve to control the movement of the...

Claims

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