Rotary compressor with tapered valve ports for lubricating pump

Details Rotary compressor with tapered valve ports for lubricating pump Rotary compressor with tapered valve ports for lubricating pump

1984-02-02

1985-12-31

Freeh, William L.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417410, 417490, 417557, 417902, 418 63, 418 88, 418 94, 184 616, F04B 3902, F04C 1800, F04C 2902

Patent

active

045618291

ABSTRACT:
A horizontal compressor including an electric motor and a compressor element mounted in a case serving concurrently as an oil sump. The compressor element includes a cylinder, a shaft having a crank, a roller fitted to the crank for eccentric rotation along inner side surfaces of the cylinder, a vane moving in reciprocatory movement in a bore of the cylinder while abutting against the roller, two side plates located on opposite sides of the cylinder, one of the two side plates being formed with a suction port for a lubricant and the other side plate being formed with a discharge port for the lubricant, and a pump chamber defined by a back of the vane, the bore of the cylinder and the two side plates. The suction port is in the form of a tapering port including a small diameter portion directly adjacent the pump chamber and a large diameter portion directly adjacent the case; the discharge port is in the form of a tapering port including a small diameter portion directly adjacent the lubricant feed passage and a large diameter portion directly adjacent the pump chamber; and a space is provided at least to the suction port in a position in which the space is in communication with the small diameter portion of the suction port.

REFERENCES:
patent: 1180613 (1916-04-01), Siemen
patent: 2422972 (1947-06-01), Knowles
patent: 2819678 (1958-01-01), Nordell et al.
patent: 3897173 (1975-07-01), Mardroian
patent: 4385875 (1983-05-01), Kanazawa

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