EP 1630419 A3 20061018 - 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)
[origin: EP1630419A2] 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)
Citation (search report)
- [X] EP 1103721 A2 20010530 - TOYODA AUTOMATIC LOOM WORKS [JP]
- [X] EP 1106831 A2 20010613 - TOYODA AUTOMATIC LOOM WORKS [JP]
- [X] EP 1431578 A2 20040623 - TOYOTA JIDOSHOKKI KK [JP]
- [X] EP 1098091 A2 20010509 - TGK CO LTD [JP]
- [X] US 5071321 A 19911210 - SKINNER TIMOTHY J [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
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