Rotary compressor of variable displacement type

Details Rotary compressor of variable displacement type Rotary compressor of variable displacement type

1989-10-20

1991-04-23

Smith, Leonard E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417442, 417503, 418 15, 418159, 418184, 418255, F04B 4902, F04B 2102, F01C 2100

Patent

active

050095773

ABSTRACT:
A rotary compressor of variable displacement type comprises a cylinder, a rotor accommodated in the cylinder in an eccentric relationship therewith, at least one vane incorporated in the rotor through an outer periphery of the latter and movable relative to the rotor reciprocatively in a longitudinal direction of the vane, and two side plates closing the cylinder at both axial ends of the latter. A suction port is formed in at least one of the side plates, while an opening portion is formed in a rear side portion of the vane as viewed in a direction of rotation of the rotor and being opened at a surface of the vane making sliding contact with the rotor. This opening portion is repeatedly communicated with and interrupted from a working space in the compressor according to the reciprocative movement of the vane relative to the rotor. A suction passage is formed in the vane, or in the vane and the rotor, for establishing communication between the suction port and the opening portion in a predetermined range of rotation of the rotor.

REFERENCES:
patent: 3671146 (1972-06-01), Alderson
patent: 4421462 (1983-12-01), Ohe
patent: 4580949 (1986-04-01), Maruyama et al.
patent: 4723895 (1988-02-01), Hayase
patent: 4744732 (1988-05-01), Nakajima et al.
patent: 4844703 (1989-07-01), Watanabe et al.

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