Mitsubishi Jukogyo Kabushiki Kaisha

Japan Tobacco Inc.

Harushige Ibe

Takashi Ogawa

Kensuke Uchiyama

Kazuo Yoshimoto

Taketoshi Shiraishi

Yoshinori Gotoh

Yoshiharu Arai

A rotary valve apparatus comprises a rotor housing having an inlet and an outlet, a rotor rotatably fitted in the rotor housing, a plurality of pockets arranged at regular intervals in the circumferential direction on the outer peripheral surface of the rotor and adapted to be connected successively to the inlet and the outlet of the rotor housing as the rotor rotates, two communication ports arranged in separate regions extending from the inlet to the outlet of the rotor housing and from the outlet to the inlet, respectively, with respect to the rotating direction of the rotor, and pressure equalizing pipes for connecting one communication port in one region with the corresponding communication port in the other region. As the rotor rotates, the pockets moving from the inlet toward the outlet and the pockets moving from the outlet toward the inlet are subjected to two cycles of pressure equalization by means of one and the same equalizing pipe.

Rotary valve apparatus

Growing community of inventors

Yokohama, Japan

Harushige Ibe