CAPACITY CONTROL VALVE - EAGLE IND CO LTD

Title:

CAPACITY CONTROL VALVE

Document Type and Number:

WIPO Patent Application WO/2014/091975

Kind Code:

A1

Abstract:

In order to improve a liquid refrigerant discharge function of a control chamber when a variable displacement compressor starts up by simplifying a discharge valve structure and discharge flow path for discharging the liquid refrigerant, this capacity control valve is provided with: suction-side passages (34, 35) that allow a suction chamber (13), which sucks in a fluid, and the control chamber (12) to communicate; a pressure sensing chamber (37) formed in the middle of the suction-side passages (34, 35); a liquid refrigerant discharge valve (45) that opens and closes the suction-side passages (34, 35) in response to pressure from the control chamber (12); a pressure sensing body (50) that is positioned inside the pressure sensing chamber (37), exerts a biasing force in the direction in which the liquid refrigerant discharge valve (45) is closed as a result of extending, and contracts with increases in ambient pressure; and a solenoid (60) that exerts an electromagnetic driving force for controlling a main valve (40). The pressure sensing body (50) is characterized by being relatively movably supported by a drive rod (65) of the solenoid (60) on one side, and communicating with the liquid refrigerant discharge valve (45) on the other side.

Inventors:

SHIRAFUJI KEIGO (JP)
KANZAKI TOSHINORI (JP)
NISHIMURA NAOKI (JP)
HIGASHIDOZONO HIDEKI (JP)

Application Number:

PCT/JP2013/082536

Publication Date:

June 19, 2014

Filing Date:

December 04, 2013

Export Citation:

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Assignee:

EAGLE IND CO LTD (JP)

International Classes:

F04B27/14; F16K11/04; F16K31/06

Domestic Patent References:

WO2006137270A1	2006-12-28
WO2006090760A1	2006-08-31
WO2007119380A1	2007-10-25

Foreign References:

JP2000345961A	2000-12-12
JP2001132632A	2001-05-18
JP2013144957A	2013-07-25

Other References: