Scroll-type fluid machinery with seals for the discharge port an

Details Scroll-type fluid machinery with seals for the discharge port an Scroll-type fluid machinery with seals for the discharge port an

1992-06-24

1993-11-02

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 553, 418 554, 418 60, 418142, F01C 104, F01C 1908, F01C 2102

Patent

active

052580466

ABSTRACT:
The present invention is intended to provide an oilless scroll-type compressor which can obtain a high compression efficiency with highly accurate sealability retained and particularly has such a constitution that a chip seal fitted in each of the wrap end surfaces of stationary scrolls and an orbiting scroll is integrated with a backup seal, a discharge port in communication with a wrap groove terminal end through a through-hole is formed in a land section positioned on the interior side of a wrap inner circumferential end on the side of one scroll and situated around a shaft hole through which a main shaft is inserted, and the circumference of said discharge port is surrounded by the chip seal extended from said wrap.

REFERENCES:
patent: 3994635 (1976-11-01), McCullough
patent: 4157234 (1979-06-01), Weaver et al.
patent: 4730375 (1988-03-01), Nakamura et al.
patent: 4883413 (1989-11-01), Perevuznik et al.

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