Invention Grant
- Patent Title: Control valve
- Patent Title (中): 控制阀
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Application No.: US12673993Application Date: 2008-08-22
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Publication No.: US08434517B2Publication Date: 2013-05-07
- Inventor: Eiji Okamoto
- Applicant: Eiji Okamoto
- Applicant Address: JP Tokyo
- Assignee: Eagle Industry Co. Ltd.
- Current Assignee: Eagle Industry Co. Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, PLC
- Priority: JP2007-216970 20070823
- International Application: PCT/JP2008/065034 WO 20080822
- International Announcement: WO2009/025366 WO 20090226
- Main IPC: F16K11/07
- IPC: F16K11/07

Abstract:
The present invention relates to a control valve capable of performing capacity control independent of the pressure of operation fluid. In the control valve which opens and closes a first poppet valve and a second poppet valve by a solenoid section the following pressure-receiving areas relating to the first poppet valve and the second poppet valve are set to be substantially equal to each other: the first effective pressure-receiving area of a first pressure-sensing spring device, the second effective pressure-receiving area of a second pressure-sensing spring device, the first pressure-receiving area on the inner side of a portion where a first valve seat surface and a first valve section surface are in contact with each other, and the second pressure-receiving area on the inner side of a portion where a second valve seat surface and a second valve section surface are in contact with each other.
Public/Granted literature
- US20110061749A1 CONTROL VALVE Public/Granted day:2011-03-17
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