Pumps – Condition responsive control of drive transmission or pump... – Having condition responsive pumped fluid control
Patent
1997-03-31
1999-04-06
Thorpe, Timothy
Pumps
Condition responsive control of drive transmission or pump...
Having condition responsive pumped fluid control
4172222, 137907, 25112902, 251 615, F04B 4900
Patent
active
058908765
ABSTRACT:
A control valve in a compressor that adjusts the discharge displacement based on controlling of an inclination of a cam plate. The compressor includes a supply passage for connecting a discharge chamber with a crank chamber. The control valve is placed midway on the supply passage for adjusting the amount of the gas introduced into the crank chamber from the discharge chamber. The control valve has a valve hole and a valve chamber respectively disposed midway on the supply passage. A valve body is located in the valve chamber to adjust the opening size of the valve hole. A reacting member reacts to the pressure in the first area. The reacting member moves the valve body via a first rod in accordance with the pressure in the first area. A solenoid is opposed to the reacting member with respect to the valve body. The solenoid has a fixed core, a plunger and a plunger chamber. Electric current sent to the solenoid produces a magnetic attractive force between the core and the plunger in accordance with a magnitude of the current. A second rod is placed between the plunger and the valve body to urge the valve body by the magnetic attractive force. The discharge chamber is connected with the valve chamber. The crank chamber is connected with the valve hole and the plunger chamber.
REFERENCES:
patent: 5145326 (1992-09-01), Kimura et al.
patent: 5681150 (1997-10-01), Kawaguchi et al.
patent: 5702235 (1997-12-01), Hirota et al.
Hirata Ichiro
Kawaguchi Masahiro
Kubo Hiroshi
Nagayoshi Kazuaki
Suito Ken
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
NOK Corporation
Thorpe Timothy
Tyler Cheryl J.
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