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1. 发明授权

US4953825A Electro-magnetic proportional flow control valve 失效
标题翻译：电磁比例流量控制阀
公开(公告)号：US4953825A
公开(公告)日：1990-09-04
申请号：US400766
申请日：1989-08-30
申请人： Toru Osumi , Shoji Ito , Kenji Hashimoto
发明人： Toru Osumi , Shoji Ito , Kenji Hashimoto
IPC分类号： F16K31/06
CPC分类号： F16K31/0693 , F16K31/0658 , F16K31/0672
摘要： An electromagnetic proportional flow control valve includes an electromagnetic solenoid having a bobbin with an axial bore and a fixed core in the axial bore. A valve housing defines a first port, a second port and a valve seat fludically positioned between the first and second ports, while a valve is normally in a closing position for closing the valve seat and interrupting fluid communication between the first and second ports. A movable core is fixed to the valve and positioned relative to the electromagnetic solenoid such that the movable core is attracted to the fixed core upon excitation of the electromagnetic solenoid. As a result, the valve may move from the closing position upon excitation of the electromagnetic solenoid to fluidically communicate the first and second ports. An annular diaphragm is positioned between the valve and the electromagnetic solenoid and is sealingly mounted to the movable core so as to form a fluid tight pressure chamber on a side of the diaphragm opposite the valve. A passage in the movable core fluidically communicates the pressure chamber with the second port so that forces acting on the valve due to pressure differences across the valve are cancelled.
摘要翻译：电磁比例流量控制阀包括电磁螺线管，该电磁螺线管具有轴向孔的筒管和轴向孔中的固定芯。阀壳体限定第一端口，第二端口和位于第一和第二端口之间的阀座，同时阀通常处于关闭位置以关闭阀座并中断第一和第二端口之间的流体连通。可动铁心固定在阀门上并相对于电磁螺线管定位，使得可动铁芯在电磁螺线管激励时被吸引到固定铁芯上。结果，当电磁螺线管激励时，阀可以从关闭位置移动，以流体地连通第一和第二端口。环形隔膜位于阀和电磁螺线管之间，并且密封地安装到可动铁芯上，以便在隔膜的与阀相对的一侧上形成流体密封的压力室。可动芯体中的通道使压力室与第二端口流体连通，从而消除由于阀门两端的压力差而作用在阀门上的力。

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