Title:
容量可変型圧縮機の制御弁
Document Type and Number:
Japanese Patent JP3991556
Kind Code:
B2
Abstract:
A control valve is used for a cooling apparatus having a compressor including a displacement variation mechanism and an external refrigerant circuit connected to the compressor to form a cooling circuit. The discharge displacement of the compressor is regulated by controlling a control pressure, which acts on the displacement control mechanism. The control valve has a housing and an internal passage. The internal passage includes a valve chamber defined in the housing. A valve body is located in the valve chamber and controls the opening degree of the internal passage. A first pressure sensing structure senses the differential pressure between two pressure monitoring points in the cooling circuit, that is, a primary pressure, and transmits a force corresponding to the primary pressure to the valve body. A second pressure sensing structure senses a secondary pressure, which is different from the primary pressure, and applies the secondary pressure to the valve body. The valve body is positioned in the valve chamber by a combination of forces corresponding to the primary pressure and the secondary pressure, and the opening degree of the internal passage is controlled accordingly.
Inventors:
Kazuya Kimura
Ken Mizuto
Taku Yasutaya
Masahiro Kawaguchi
Ken Mizuto
Taku Yasutaya
Masahiro Kawaguchi
Application Number:
JP2000186348A
Publication Date:
October 17, 2007
Filing Date:
June 21, 2000
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
F04B27/14; F04B27/18; F04B49/00; F04B49/03; F16K31/06
Domestic Patent References:
| JP2567947B2 | ||||
| JP10176659A | ||||
| JP11218078A | ||||
| JP10103249A | ||||
| JP10318155A | ||||
| JP5099136A | ||||
| JP9166086A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda