Kabushiki Kaisha Saginomiya Seisakusho

Yasuo Komiya

Tadashi Aoki

Seiichi Nakano

Hideki Sekiguchi

Tokuji Yatsui

Soichiro Tomioka

The present invention provides a motor-operated valve having no additional stopper for stopping the rotation of a rotor at fully open and closed states of the valve to allow a reduced number of parts of the valve and to prevent a noise otherwise generated by the abutment of the rotor against a stopper. The motor-operated valve includes a rotor having a shaft formed with an external thread The motor-operated valve also includes a needle valve element having a needle valve head at one end portion thereof and an internal thread engaging with the external thread at another end portion. The valve element has a joining portion for joining the valve head to the internal thread The motor-operated valve also includes a main valve body having a guide portion which stops the rotation of the valve element but allows the axial movement of the valve element. The shaft has an upper end supported by a supporting portion provided on a top wall of a valve housing while a lower end of the shaft is rotatably supported by a bearing secured to the main valve body.

Motor operated valve

An electrically operated reversible expansion valve. It has a valve body formed with a primary port, a secondary port, a valve seat defined between the primary and secondary ports, and a slide bore in an opposing relation to said valve seat. A valve needle is supported by the slide bore. In order to prevent the fluid from being admitted into a bimetal chamber through the slide bore, a bypass is provided between the primary port and the slide bore.

Reversible expansion valve

A reversing valve means for use with a reversible refrigerating cycle system in which a selector valve is actuated by pressure difference in the refrigerant gas and not by any mechanical means such as spring or the like. Said valve means is simple in construction and excellent in durability, enabling sure switchover of a heating cycle to a cooling cycle and vice versa.

Growing community of inventors

Saitama, Japan

Yasuo Komiya