发明名称 PROPORTIONAL CONTROL VALVE
摘要 PURPOSE:To prevent a valve from vibrating without impairing the control characteristics by providing a diaphragm moving in conjunction with a valve element controlling the fluid flow so as to form a damper chamber. CONSTITUTION:A diaphragm 25 moving in conjunction with a valve element 18 is provided to form a damper chamber A, and also a primary pressure chamber B is formed with a body 4 and the valve element 18, etc. beneath the diaphragm 25. The damper chamber A is connected to the primary pressure chamber B with a fine hole 26 provided on the diaphragm 25. When the current flowing through a coil 12 is increased or decreased, a plunger 16 is moved up or down and the diaphragm 25 is also moved accordingly, thus the volume of the damper chamber A is changed. If the plunger 16 is moved up or down at a normal speed, the gas in the damper chamber A is connected to the primary pressure chamber B through the fine hole 26, and the movement of the plunger 16 is not hindered. However, the gas acts to hinder the movement of the plunger against such a quick movement as a valve vibration, thereby a valve vibration can be prevented.
申请公布号 JPS5850378(A) 申请公布日期 1983.03.24
申请号 JP19810147605 申请日期 1981.09.17
申请人 MATSUSHITA DENKI SANGYO KK 发明人 TANAHASHI TAKASHI;UEMATSU HIDEO;YAMAUCHI MASAJI;MATSUMOTO TOMOHIDE
分类号 F16K31/06 主分类号 F16K31/06
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