Scroll compressor having an auxiliary bearing for the crankshaft

Details Scroll compressor having an auxiliary bearing for the crankshaft Scroll compressor having an auxiliary bearing for the crankshaft

1996-09-13

1998-09-22

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

F04C 1804, F04C 2902

Patent

active

058105727

ABSTRACT:
A scroll compressor includes a stationary scroll member accommodated in a closed housing and having a stationary end plate and a stationary scroll wrap protruding axially from the stationary end plate, and also includes an orbiting scroll member accommodated in the closed housing and having an orbiting end plate and an orbiting scroll wrap protruding axially from the orbiting end plate so as to engage with the stationary scroll wrap to define a plurality of working pockets therebetween. A crankshaft is provided to drive the orbiting scroll member, and the crankshaft includes a main shaft and an auxiliary shaft on opposite sides thereof. A main bearing supports the main shaft of the crankshaft. A bearing frame is secured to an inner surface of the closed housing, and an auxiliary bearing is mounted to the bearing frame to support the auxiliary shaft of the crankshaft. The closed housing has an oil sump formed therein to accommodate lubricating oil, and an oil passage is formed in the bearing frame so as to extend into the oil sump. An oil feed device is mounted on the bearing frame and engages with one end of the auxiliary shaft to feed the lubricating oil from the oil sump through the oil passage.

REFERENCES:
patent: 5197868 (1993-03-01), Caillat et al.
patent: 5370513 (1994-12-01), Fain
patent: 5391066 (1995-02-01), Sawai et al.
patent: 5445507 (1995-08-01), Nakamura et al.
patent: 5494422 (1996-02-01), Ukai et al.

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