ELECTROMAGNETIC CONTROL VALVE
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United States of America Patent
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Issued Date -
Mar 16, 2017
app pub date -
Nov 7, 2014
filing date -
Mar 13, 2014
priority date (Note) -
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Abstract
Provided is a pressure balance type electromagnetic control valve in which an electromagnetic force of an electromagnetically-driving part is balanced against a spring force of an adjusting spring, and an influence of a pressure difference applied to a valve body between the pressure of a first port and a pressure of a second port is cancelled so that an opening degree of the valve body is proportionally changed. An opening degree is accurately controlled by shortening a length of a valve housing and removing an influence of the dynamic pressure of a fluid of the second port with respect to a plunger of the electromagnetically-driving part. The electromagnetically-driving part, an adjusting spring, a pressure equalizing chamber, and a diaphragm are provided on the opposite side of the valve port with respect to the valve body on an axis line of a valve port.
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