Global patent index - EP 1033490 A2

EP 1033490 A2 2000-09-06 - Control valve for variable displacement compressor

Title (en)

Control valve for variable displacement compressor

Title (de)

Kontrollventil für variablen Verdrängungskompressor

Title (fr)

Soupape de contrôle pour compresseur à capacité variable

Publication

EP 1033490 A2 (EN)

Application

EP 00104151 A

Priority

JP 5249599 A

Abstract (en)

A displacement control valve for controlling the amount of gas flowing through a bleed passage (27A, 27B) of a compressor to adjust pressure in a crank chamber (5) of the compressor. The control valve includes a housing (60), a pressure sensitive member, or diaphragm (57), which is arranged in the housing (60), and an actuator (54) extending from the diaphragm (57) and arranged in the housing (60). A valve body (51) is formed integrally with the distal end of the actuator (54). A pressure receiving body (53) is provided at the proximal end of the actuator (54). The diaphragm (57) drives the actuator (54) in accordance with a suction pressure. The pressure receiving body (53) urges the diaphragm (57) in a single direction in accordance with a discharge pressure. The diameter (or cross-sectional are) of the actuator (54) decreases in a stepped-like manner in the axial direction. This simplifies manufacture and of the actuator (54) and facilitates assembly. <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)

CPC (invention and additional information)

F04B 27/1804 (2013.01); F04B 2027/1813 (2013.01); F04B 2027/1831 (2013.01); F04B 2027/185 (2013.01)

Citation (applicant)

JP H0552182 A 19930302 - TAIHEIYO KOGYO KK

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

EP 1033490 A2 20000906; EP 1033490 A3 20010110; JP 2000249051 A 20000912

INPADOC legal status

2003-03-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020903

2001-09-26 [AKX] PAYMENT OF DESIGNATION FEES

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2001-01-10 [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

2001-01-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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2000-09-06 [17P] REQUEST FOR EXAMINATION FILED

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- Effective date: 20000229

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): DE FR IT

2000-09-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

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