Saginomiya Seisakusho, Inc.

Hiroki Denda

Yasumasa Takada

Yuichiro Toyama

Junichi Yokota

Yoshihisa Arai

A throttling device is equipped with a valve seat in which a valve port for connecting a primary chamber and a secondary chamber is formed, a needle valve, a needle section which is inserted into the valve port, a guide section for guiding a slide shaft of the needle valve, and a coil spring for biasing the needle valve in a valve-closing direction. The guide section and the coil spring are positioned on the primary chamber side. The coil spring is covered by a stopper section. A gap between the stopper section and a main body case functions as a main body path for delivering a refrigerant from the primary chamber to the valve port.

Throttling device and refrigeration cycle

In a throttle device, a guide section including a small-diameter hole which slidably guides a guide stem of a needle member is formed upstream side portion from a communicating hole-in a guide tube.

Throttle device and refrigeration cycle system with same

A throttling device is equipped with a valve seat in which a valve port for connecting a primary chamber and a secondary chamber is formed, a needle valve, a needle section which is inserted into the valve port, a guide section for guiding a slide shaft of the needle valve, and a coil spring for biasing the needle valve in a valve-closing direction. The guide section and the coil spring are positioned on the primary chamber side. The position of the needle valve in the valve-closing direction is restricted by a stopper section in a manner such that the minimum gap between the needle valve and the valve port is maintained. Furthermore, the needle valve is not seated on the valve seat.

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Sayama, Japan

Hiroki Denda