Scroll compressor

Details Scroll compressor Scroll compressor

1995-03-13

1996-07-02

Freay, Charles

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 98, 418104, 277178, 277188R, F01L 104

Patent

active

055315780

ABSTRACT:
A large diameter portion of a rotating shaft is supported by an opening in a front housing via a radial bearing. An outer race of the bearing is in contact with an inner, rear surface of the housing as a shoulder portion of the opening. The inner surface is forwardly recessed, so that a small chamber is formed between the housing and the bearing unit. The housing has a stopper projection at a rear end of an opening to which a shaft seal unit is inserted. The projection is axially projected to a faced front surface of the large diameter portion of the shaft, while a seal chamber is formed between the shaft seal unit and the large diameter portion. The seal chamber is in communication with the small chamber. A plurality of circumferentially spaced grooves for holding lubricant are formed at the recessed surface for forming the small chamber.

REFERENCES:
patent: 4340339 (1982-07-01), Hiraga et al.
patent: 4484869 (1984-11-01), Nakayama et al.
patent: 4527963 (1985-07-01), Terauchi
patent: 4538975 (1985-09-01), Tsukagoshi
patent: 4547138 (1985-10-01), Mabe et al.
patent: 4561832 (1985-12-01), Shimizu
patent: 5269661 (1993-12-01), Iizuka et al.
patent: 5419690 (1995-05-01), Goto et al.

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