Fuji Electric Co., Ltd.

Yasutaka Sanuki

Yukihiro Takano

Nobutoshi Migishima

Naoki Inoshita

Shusuke Saito

Koji Takiguchi

An electronic expansion valve () includes a small hole () that expands a refrigerant, a valve body () that opens and closes the small hole, an elastic member () that urges the valve body to close the small hole, and a solenoid () that suctions the valve body to open the small hole, and expands the refrigerant by opening and closing the valve body. The elastic member is a disc spring in which a plurality of slits () formed in a spiral form is provided at mutually equal pitches on the perimeter. Therefore, there is no need for a guide, the occurrence of sludge due to sliding is suppressed, and the electronic expansion valve operates stably over a long period.

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Yokkaichi, Japan

Yasutaka Sanuki