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    • 10. 发明申请
    • SPRING VALVE IMPLEMENTED FLOW CONTROL VALVES
    • 弹簧阀实现流量控制阀
    • WO2003002897A1
    • 2003-01-09
    • PCT/US2002/020283
    • 2002-06-26
    • CAFE ENGINEERINGPHILLIPS, Edward, H.
    • PHILLIPS, Edward, H.
    • F16K1/40
    • G05D7/0635F01P2007/146F16K1/40Y10S251/902Y10T137/86622Y10T137/87772Y10T137/8778
    • Improved low flow impedance flow control valves are disclosed in the present invention wherein spring valve means (12) captured between a valve spool (28) and a shoulder (30) are utilized for selectively metering a flow of fluid from an inlet port (18) to an outlet port (14) via a round edged helical orifice (82) formed between the open coils of the spring valve (12) as a function of the instant axial position of the valve spool (28) and the differential pressure therebetween. An improved method of controlling low impedance flow control valves is also disclosed in the present invention. The improved method provides better accuracy in controlling fluid flow through low flow impedance flow control valves through continually cycling a means for substantially interrupting fluid flow therethrough in a low frequency pulse width modulated fashion.
    • 在本发明中公开了改进的低流阻抗流量控制阀,其中捕获在阀芯(28)和肩部(30)之间的弹簧阀装置(12)用于选择性地计量来自入口端口(18)的流体流, 通过形成在弹簧阀(12)的打开的线圈之间的圆形边缘螺旋孔(82)作为阀芯(28)的即时轴向位置和它们之间的压差的函数而连接到出口端口(14)。 本发明还公开了一种控制低阻流量控制阀的改进方法。 改进的方法通过连续循环用于以低频脉冲宽度调制方式基本上中断流体流动的装置来提供更好的精度控制通过低流阻抗流量控制阀的流体流动。