Electronic expansion valve
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United States of America Patent
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Apr 26, 2016
Grant Date -
May 7, 2015
app pub date -
Aug 10, 2012
filing date -
May 11, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electronic expansion valve is provided, which includes a main valve cavity. A sleeve is fixed in the main valve cavity. A lower end part of the sleeve is supported by a valve seat, and the lower end part of the sleeve surrounds a main valve port. A valve core seat is axially movably arranged in the sleeve. A lower part of the valve needle component extends into the sleeve to open and close the valve core valve port. A circumferential side wall of the sleeve is provided with a first communicating hole close to the main valve port and a second communicating hole away from the main valve port. The structural design of the electronic expansion valve may prevent an excessive impact on a valve core seat caused by the refrigerant with high pressure when the refrigerant flows forward, thereby preventing the eccentricity of the valve core seat.
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