EP 1630419 A2 20060301 - Control valve for variable displacement compressor
Title (en)
Control valve for variable displacement compressor
Title (de)
Kontrollventil für einen verstellbaren Taumelscheibenkompressor
Title (fr)
Soupape de contrôle pour un compresseur à capacité variable
Publication
Application
Priority
- JP 2004251287 A 20040831
- JP 2005021518 A 20050128
Abstract (en)
A valve section 13 of a control valve controls the flow rate between a discharge chamber and a crankcase, based on the differential pressure between discharge pressure Pd and suction pressure Ps. A pressure-sensing section 12 is provided in a high-pressure port 18. When a pressure-sensing piston 19 having a pressure-receiving area larger than a valve element 23 is exposed to a rapid discharge pressure change, the differential pressure generated between the discharge pressure Pd and a pressure in a pressure-adjusting chamber 20 acts on the valve element 23 opposite to the valve-opening/closing direction, to temporarily retard the motion of the valve element 23 which opens or closes by the differential pressure (Pd-Ps). Even a high-sensitivity variable displacement compressor promptly restores without hunting to a predetermined discharge capacity.
IPC 8 full level
F04B 27/18 (2006.01)
CPC (source: EP KR US)
F04B 27/14 (2013.01 - KR); F04B 27/1804 (2013.01 - EP US); F04B 49/06 (2013.01 - KR); F25B 1/00 (2013.01 - KR); F04B 2027/1813 (2013.01 - EP US); F04B 2027/1827 (2013.01 - EP US); F04B 2027/1854 (2013.01 - EP US); F04B 2027/1859 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 1630419 A2 20060301; EP 1630419 A3 20061018; JP 2006097673 A 20060413; KR 20060050781 A 20060519; US 2006045758 A1 20060302
DOCDB simple family (application)
EP 05018104 A 20050819; JP 2005021518 A 20050128; KR 20050079729 A 20050830; US 21390205 A 20050830