EP 1033490 A3 20010110 - Control valve for variable displacement compressor
Title (en)
Control valve for variable displacement compressor
Title (de)
Kontrollventil für variablen Verdrängungskompressor
Title (fr)
Soupape de contrôle pour compresseur à capacité variable
Publication
Application
Priority
JP 5249599 A 19990301
Abstract (en)
[origin: EP1033490A2] A displacement control valve for controlling the amount of gas flowing through a bleed passage (27A, 27B) of a compressor to adjust pressure in a crank chamber (5) of the compressor. The control valve includes a housing (60), a pressure sensitive member, or diaphragm (57), which is arranged in the housing (60), and an actuator (54) extending from the diaphragm (57) and arranged in the housing (60). A valve body (51) is formed integrally with the distal end of the actuator (54). A pressure receiving body (53) is provided at the proximal end of the actuator (54). The diaphragm (57) drives the actuator (54) in accordance with a suction pressure. The pressure receiving body (53) urges the diaphragm (57) in a single direction in accordance with a discharge pressure. The diameter (or cross-sectional are) of the actuator (54) decreases in a stepped-like manner in the axial direction. This simplifies manufacture and of the actuator (54) and facilitates assembly. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 27/14 (2006.01); F04B 27/18 (2006.01); F04B 49/00 (2006.01)
CPC (source: EP)
F04B 27/1804 (2013.01); F04B 2027/1813 (2013.01); F04B 2027/1831 (2013.01); F04B 2027/185 (2013.01)
Citation (search report)
- [Y] US 4702677 A 19871027 - TAKENAKA KENJI [JP], et al
- [A] DE 4446832 A1 19950629 - TOYODA AUTOMATIC LOOM WORKS [JP]
- [DY] PATENT ABSTRACTS OF JAPAN vol. 017, no. 362 (M - 1441) 8 July 1993 (1993-07-08)
- [A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 563 (M - 1693) 27 October 1994 (1994-10-27)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1033490 A2 20000906; EP 1033490 A3 20010110; JP 2000249051 A 20000912
DOCDB simple family (application)
EP 00104151 A 20000229; JP 5249599 A 19990301