Title:
可変容量圧縮機用容量制御弁
Document Type and Number:
Japanese Patent JP4152674
Kind Code:
B2
Abstract:
In a capacity control valve for a variable displacement compressor, the cross-sectional area of a valve hole of a high pressure-side valve seat 25 for introducing discharge pressure Pd into the pressure-regulating chamber is "A", the cross-sectional area of a valve hole of a low pressure-side valve seat 28 for introducing pressure Pc1 (= Pc2) of the pressure-regulating chamber into the suction chamber is "B", and the average cross-sectional area of a refrigerant passage assumed when a low-pressure valve element 24 is in open position during most of control time of actual operation is "b". The areas "A" and "B" are set such that "A < B" holds to make the effective pressure receiving area ( A) of the high pressure-side valve and the effective pressure receiving area ( B-b) of the low pressure-side valve approximately equal to each other. This cancels any influence of Pc1 (= Pc2) on the valve elements 23, 24, during actual operation, and results in a constant value characteristic of the differential pressure Pd - Ps irrespective of the adjusted discharge capacity.
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Inventors:
Hisashi Hirota
Application Number:
JP2002162608A
Publication Date:
September 17, 2008
Filing Date:
June 04, 2002
Export Citation:
Assignee:
TAGC Inc.
International Classes:
F04B27/14; F04B49/06; F04B27/18; F04B49/00
Domestic Patent References:
| JP7027049A | ||||
| JP63065178A |
Attorney, Agent or Firm:
Takeshi Hattori