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Patent Searching and Data


Title:
CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2019/155780
Kind Code:
A1
Abstract:
Provided is a control valve for a variable displacement compressor, configured so that the influence of refrigerant pressure acting on a main valve body can be effectively cancelled, the complexity of a structure can be avoided, and an increase in the size of a construction can be avoided. This control valve for a variable displacement compressor is provided with a pressure equalization passage 15 which introduces a suction pressure Ps acting on the upper end of a main valve body 10 into a Ps introduction chamber 48B provided at the lower end of the main valve body 10, and which causes the suction pressure Ps to act on the lower end of the main valve body. When (the solenoid section 30A of) an electromagnetic actuator 30 is de-energized (that is, when a valve opening 22 is fully open), the introduction of pressure Pc in a crank chamber into the Ps introduction chamber 48B from a Pc inlet-outlet opening 26 is blocked, the suction pressure Ps is introduced into the Ps introduction chamber 48B through the pressure equalization passage 15, and the suction pressure Ps acts on both the upper and lower ends of the main valve body 10.

Inventors:
TANO Shintaro (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
SAKAMOTO Takashi (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
SHIMADA Kenki (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
ITOH Masaharu (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
KUME Yoshiyuki (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
Application Number:
JP2018/047971
Publication Date:
August 15, 2019
Filing Date:
December 26, 2018
Export Citation:
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Assignee:
FUJIKOKI CORPORATION (17-24, Todoroki 7-chome Setagaya-k, Tokyo 82, 〒1580082, JP)
International Classes:
F04B27/18; F16K31/06
Foreign References:
JP2012036812A2012-02-23
JP4550651B22010-09-22
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (Atago Green Hills MORI Tower 32F, 5-1 Atago 2-chome, Minato-k, Tokyo 32, 〒1056232, JP)
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