EP 1455090 A1 20040908 - Variable displacement compressor
Title (en)
Variable displacement compressor
Title (de)
Kompressor mit variabler Fördermenge
Title (fr)
Compresseur à déplacement variable
Publication
Application
Priority
EP 03100541 A 20030305
Abstract (en)
Variable displacement compressor (10) comprising a crankcase, housing a tilted cam plate (26) connected to a rotary shaft (20); at least one piston (30) associated to the tilted cam plate (26), the tilted cam plate (26) transferring rotary movement of the rotary shaft (20) to reciprocating movement of the piston (30), the piston (30) being arranged in a cylinder bore (28), wherein, in operation, the piston (30) draws refrigerant at suction pressure into the cylinder bore (28) and compresses the refrigerant to a discharge pressure. The compressor (10) further comprises a control valve (52) for changing the crankcase pressure with respect to the suction pressure so as to change the angle of tilt of the cam plate (26); and a control unit (60) for operating the control valve (52). According to an important aspect of the invention, the control unit (60) comprises means (66, 68) for determining a pressure differential between a crankcase pressure and a suction pressure; and means for operating a control valve (52) based on the determined pressure differential. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 27/18 (2006.01)
CPC (source: EP)
F04B 27/1804 (2013.01); F04B 2027/1845 (2013.01); F04B 2027/1854 (2013.01); F04B 2027/1859 (2013.01); F04B 2201/0401 (2013.01); F04B 2205/02 (2013.01)
Citation (search report)
- [X] EP 1039129 A2 20000927 - TOYODA AUTOMATIC LOOM WORKS [JP]
- [X] US 4880356 A 19891114 - SUZUKI SHINICHI [JP], et al
- [X] US 4848101 A 19890718 - SUZUKI NOBUHIKO [JP]
- [X] EP 0864749 A2 19980916 - TOYODA AUTOMATIC LOOM WORKS [JP], et al
- [A] US 2003029180 A1 20030213 - MARTIN URBANK THOMAS [US], et al
- [A] US 5051067 A 19910924 - TERAUCHI KIYOSHI [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03100541 A 20030305