Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1988-05-12
1989-10-31
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 94, 184 618, 384 99, 384118, 384369, F04C 1804, F04C 2902, F01M 1102, F16C 3206
Patent
active
048773816
ABSTRACT:
A scroll-type hermetic compressor is disclosed including within a hermetically sealed housing a fixed scroll member, an orbiting scroll member, a main bearing frame member, and a crankshaft. The frame member and fixed scroll member define a suction pressure chamber in which the orbiting scroll member is disposed. The crankshaft includes a plate portion disposed between the orbiting scroll member and a thrust surface of the frame. Oil chambers are disposed within respective interfaces between the orbiting scroll member bottom surface and the plate portion top surface, and the plate portion bottom surface and the frame thrust surface. Oil at discharge pressure from an oil sump is supplied to the oil chambers. The oil chambers communicate with one another via a pressure equalization port extending through the plate portion.
REFERENCES:
patent: 3003684 (1961-10-01), Tarleton
patent: 4473343 (1984-09-01), Hazaki et al.
patent: 4502852 (1985-03-01), Hazaki
patent: 4637786 (1987-01-01), Matoba et al.
patent: 4702682 (1987-10-01), Inaba et al.
Johnson William C.
Richardson, Jr. Hubert
Ahlersmeyer David L.
Hoffman John F.
Jeffers Albert L.
Tecumseh Products Company
Vrablik John J.
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