Global patent index - EP 1070845 A1

EP 1070845 A1 2001-01-24 - CRANK PRESSURE CONTROL MECHANISM OF VARIABLE DISPLACEMENT COMPRESSOR

Title (en)

CRANK PRESSURE CONTROL MECHANISM OF VARIABLE DISPLACEMENT COMPRESSOR

Title (de)

MECHANISMUS ZUR REGELUNG DESW KURBELGEHÄUSEDRUCKS BEI KOLBENKOMPRESSOREN

Title (fr)

REGULATEUR DE PRESSION DE CARTER POUR COMPRESSEUR A DEPLACEMENT VARIABLE

Publication

EP 1070845 A1 (EN)

Application

EP 00902118 A

Priority

  • JP 0000650 W
  • JP 3289599 A

Abstract (en)

A variable displacement compressor has a discharge pressure zone, the pressure of which is a discharge pressure, and a supply passage for supplying gas from the discharge pressure zone to a crank chamber. An inlet valve mechanism opens or closes the supply passage to control the pressure in the crank chamber. An adjusting mechanism is located in the supply passage between the inlet valve mechanism and the crank chamber. The adjusting mechanism gradually varies the amount of gas supplied from the discharge pressure zone to the crank chamber through the supply passage. This results in a rapid shift to the minimum displacement and operates the compressor with optimum efficiency. <IMAGE>

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

F04B 27/08; F04B 27/14

IPC 8 full level (invention and additional information)

F04B 49/06 (2006.01); F04B 27/08 (2006.01); F04B 27/14 (2006.01); F04B 27/18 (2006.01); F04B 49/08 (2006.01)

CPC (invention and additional information)

F04B 27/1804 (2013.01); F04B 2027/1813 (2013.01); F04B 2027/1827 (2013.01); F04B 2027/1831 (2013.01); F04B 2027/1836 (2013.01); F04B 2027/1854 (2013.01); F04B 2027/1877 (2013.01); F04B 2205/151 (2013.01); F04B 2205/173 (2013.01)

Citation (search report)

See references of WO 0047896A1

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

EP 1070845 A1 20010124; JP 2000230481 A 20000822; WO 0047896 A1 20000817

INPADOC legal status

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Ref Legal Event Code: RBV

- Designated State(s): DE FR IT

2003-03-26 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020829

2001-01-24 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001109

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE