Global patent index - EP 1024286 A2

EP 1024286 A2 2000-08-02 - 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 A2 (EN)

Application

EP 00101797 A

Priority

JP 2144099 A

Abstract (en)

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 (applicant)

Designated contracting state (EPC)

DE FR IT

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2003-02-26 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020801

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

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

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- 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

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

- Ref Legal Event Code: 17P

- Effective date: 20000128

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

- Ref Legal Event Code: AK

- Designated State(s): DE FR IT

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

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI