Fujitsu Fanuc Limited

Keiichi Harano

Shigeaki Oyama

Shigeki Kawada

A rotary electric motor of a sealed type comprising a heat pipe in a rotor shaft and a plurality of air vents in a stator. In the operation of this motor, a rotor mounted on the rotor shaft is cooled by the heat pipe and simultaneously, the stator is cooled directly by the air flowing therethrough.

Rotary electric motor

A rotary electric machine with a heat pipe for cooling, which pipe comprises a rotary shaft. The rotary shaft has a hole formed therein extending from a heating zone to a cooling zone and has working fluid charged therein. The inner diameter of the cooling zone is smaller than the diameter of the heating zone, and an inner wall of the cooling zone is connected to an inner wall of the heating zone via a step.

Growing community of inventors

Sagamihara, Japan

Keiichi Harano