Flow control valve with integrated pressure contro

专利名称：Flow control valve with integrated pressure

controller

发明人：Willi Wild,Siefried Merz申请号：US09/172992申请日：19981014公开号：US06062257A公开日：20000516

摘要：A flow control valve has two successively arranged throttle locations. The firstthrottle location serves as an adjusting member for the through- flow. The secondthrottle location controls the pressure difference across the first throttle location to aconstant value. The first throttle location is formed by a control member (4) which co-operates with a first valve seat (5) of a valve insert (7) which is fixedly connected to thevalve housing (6). The second throttle location is formed by a pressure regulatingmember (9) which co-operates with a second valve seat (10) of the valve insert (7). Thecontrol member (4) and the pressure regulating member (9) are displaceable in anidentical direction (12) and connected by means of a resilient diaphragm (13). The inletchamber (1) is communicated with a pressure chamber (15) which acts on the diaphragm(13) and on the pressure regulating member (9). The operative surface which transmitsthe pressure (p.sub.1) obtaining in the inlet chamber (1) to the pressure regulatingmember (9) is approximately equal to the operative surface which transmits the pressure(p.sub.2) obtaining between the two throttle locations to the pressure regulatingmember (9). In that arrangement the flow medium flows rotationally symmetricallythrough the second throttle location.

申请人：ELECTROWATT TECHNOLOGY INNOVATION AG

代理机构：Proskauer Rose LLP

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