Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1988-05-12
1989-10-24
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 88, 418 94, F04C 1804, F04C 2700, F04C 2902
Patent
active
048758388
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. An oil sump is located in a discharge pressure chamber in the housing. 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 from the oil sump is supplied to the oil chambers. Either a hydrodynamic oil seal or an annular seal element is provided in each interface radially outwardly from the oil chamber.
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Ahlersmeyer David L.
Hoffman John F.
Jeffers Albert L.
Tecumseh Products Company
Vrablik John J.
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