Oil feeding device for scroll fluid apparatus

Details Oil feeding device for scroll fluid apparatus Oil feeding device for scroll fluid apparatus

1987-04-27

1988-06-07

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 88, 418 94, 184 618, 384 99, F01C 102, F01C 2104, F01M 1102, F16C 902

Patent

active

047493445

ABSTRACT:
An oil feeding device for a scroll fluid apparatus. A fixed scroll member is associated with an orbiting scroll member. A crankshaft rotatably supported by a bearing of a frame has a crank portion engaging with a plain bearing of the orbiting scroll member. A variable speed driving motor is connected to the crankshaft. An oil feeding passageway is provided in the crankshaft and the crank portion. Oil is supplied to the plain bearing of the orbiting scroll member through a space at the end face of the crank portion. An oil flow passage is provided in parallel with the axis and in a surface of the crank portion located at a position advanced through approximately 45 degrees toward the rotational direction of the crank portion, from a position at which the load acting radially of the shaft due to the centrifugal force caused by the orbiting motion of the orbiting scroll member is applied to the crank portion of the shaft.

REFERENCES:
patent: 4462772 (1984-07-01), Hazaki et al.
patent: 4502852 (1985-03-01), Hazaki
patent: 4623306 (1986-11-01), Nakamura et al.

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