Global Patent Index - EP 0771948 B1

EP 0771948 B1 2000-01-19 - Capacity control device for variable-capacity compressor

Title (en)

Capacity control device for variable-capacity compressor

Title (de)

Kapazitätsregelvorrichtung für einen Verdichter mit veränderlicher Fördermenge

Title (fr)

Dispositif de réglage de la capacité d'un compresseur à capacité variable

Publication

EP 0771948 B1 (EN)

Application

EP 96103572 A

Priority

JP 28314095 A

Abstract (en)

[origin: EP0771948A1] A capacity control device for variable-capacity compressors is provided with a high-pressure valve portion 36 for opening or closing the communication between the discharge chamber 21 and the crank case 12; a low-pressure vale portion 41 for opening or closing the communication between the suction chamber 20 and the crank case 12; a valve open-close member 35 for opening or closing so as to reverse the open-close relationship between the high-pressure valve portion 36 and the low-pressure valve portion 41 by advancing or retreating; a pressurising chamber 53 for applying pressure to the valve open-close member 35 in a direction that opens the high-pressure valve portion 36 by means of a wider effective pressure-receiving area than that of the high-pressure valve portion 36. The device is driven with only small actuation forces by an electromagnetic solenoid 50 to open or close a communicating path between the discharge chamber 21 and the said pressurising chamber 53. <IMAGE>

IPC 1-7 (main, further and additional classification)

F04B 27/18

IPC 8 full level (invention and additional information)

F04C 28/26 (2006.01); F04B 27/08 (2006.01); F04B 27/14 (2006.01); F04B 27/18 (2006.01)

CPC (invention and additional information)

F04B 27/1804 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0771948 A1 19970507; EP 0771948 B1 20000119; AT 189042 T 20000215; DE 69606261 D1 20000224; DE 69606261 T2 20000608; ES 2142510 T3 20000416; JP 3490557 B2 20040126; JP H09126124 A 19970513