Global Patent Index - EP 1024286 A3

EP 1024286 A3 2001-02-07 - Control valve for variable displacement compressor

Title (en)

Control valve for variable displacement compressor

Title (de)

Kontrollventil für einen verstellbaren Taumelscheibenverdichter

Title (fr)

Soupape de contrôle pour un compresseur à plateau en biais à capacité variable

Publication

EP 1024286 A3 (EN)

Application

EP 00101797 A

Priority

JP 2144099 A

Abstract (en)

[origin: EP1024286A2] A displacement control valve adjusts the pressure in a crank chamber (5) of a compressor to vary the displacement of the compressor. The control valve has a first valve mechanism (60), a second valve mechanism (70) and a solenoid mechanism (80). The solenoid mechanism (80) independently actuates the first and second valve mechanisms (60, 70). The first valve mechanism (60) selectively opens and closes a supply passage (28) of the compressor. The second valve mechanism (70) adjusts the flow rate of gas through a bleed passage (27) of the compressor. The second valve mechanism (70) includes a second valve opening (72), a second valve element (73), a bellows (76) and a second plunger (83). The second valve element (73) and the bellows (76) are accommodated in a single pressure chamber (71). The pressure of a suction chamber is introduced to the pressure chamber (71). The control valve has a relatively simple structure and is thus inexpensive and compact. <IMAGE>

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

F04B 27/18

IPC 8 full level (invention and additional information)

F04B 49/00 (2006.01); F04B 27/14 (2006.01); F04B 27/18 (2006.01); F16K 17/06 (2006.01); F16K 31/06 (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 2027/1854 (2013.01); F04B 2027/1859 (2013.01)

Citation (search report)

Designated contracting state (EPC)

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

EPO simple patent family

EP 1024286 A2 20000802; EP 1024286 A3 20010207; JP 2000220576 A 20000808; JP 3899719 B2 20070328

INPADOC legal status


2003-02-26 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020801

2001-10-24 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR IT

2001-02-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

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

2001-02-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2000-08-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000128

2000-08-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR IT

2000-08-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI