Scroll compressor having an annular seal for a stationary scroll

Details Scroll compressor having an annular seal for a stationary scroll Scroll compressor having an annular seal for a stationary scroll

1999-03-23

2000-09-05

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, F04C 1804

Patent

active

061133736

ABSTRACT:
In a scroll compressor, a stationary scroll is pressed toward a movable scroll by a back pressure of a discharge fluid compressed by a compression mechanism, and wear powder, produced from an annular seal (which receives the pressure of the discharge fluid) as a result of precession of the stationary scroll, is arrested, thereby achieving the scroll compressor high in efficiency and reliability. A pressure-receiving surface for receiving a back pressure of the discharge fluid so as to press the stationary scroll toward the movable scroll is formed on that portion of the stationary scroll disposed around a communication port which is formed in the stationary scroll, and communicates with a discharge port. An annular seal is provided to form a seal between the stationary scroll and an upper frame around a region of communication between the communication port and the discharge port in such a manner as to satisfy a necessary annular sealing surface area, and a circumferential recess is provided on that side lower in pressure than this annular seal.

REFERENCES:
patent: 3874827 (1975-04-01), Young
patent: 4877382 (1989-10-01), Caillat et al.
patent: 5329788 (1994-07-01), Caillat et al.
patent: 5346376 (1994-09-01), Bookbinder et al.
patent: 5540572 (1996-07-01), Park et al.
patent: 5674061 (1997-10-01), Motegi et al.

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