Rotary valve apparatus

Details Rotary valve apparatus Rotary valve apparatus

F - Mech Eng,Light,Heat,Weapons

17

C

F17C 13/00 (2006.01) A24B 3/18 (2006.01) B65G 53/46 (2006.01)

Patent

CA 2113962

- 32 - ABSTRACT OF THE DISCLOSURE 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 rotate, 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.

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