Rotary expansible chamber devices – Methods
Patent
1992-07-20
1994-04-26
Vrablik, John J.
Rotary expansible chamber devices
Methods
418 554, 418 555, 418 556, 418100, F04C 1804, F04C 2700, F04C 2902
Patent
active
053061268
ABSTRACT:
A hermetic scroll-type compressor including a housing, fixed and orbiting scroll members, a frame member having a thrust surface adjacent the orbiting scroll member back surface, and a crankshaft coupled to the orbiting scroll member. A seal between the thrust surface and the back surface of the orbiting scroll member seals between a radially inner portion of the back surface exposed to discharge pressure and a radially outer portion exposed to suction pressure. The frame member defines an annular oil chamber having a side surface and a bottom surface above which the radially outer portion of the back surface orbits in spaced relationship. The oil chamber contains a sufficient depth of oil to extend the oil level above an upper peripheral edge of the orbiting scroll member, whereby oil from the oil chamber is sucked between the intermeshed scroll members. Radial compliance of the orbiting scroll meters the oil flow between the scroll members.
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patent: 4762477 (1988-08-01), Hayano et al.
patent: 4767293 (1988-08-01), Caillat et al.
patent: 4875838 (1989-10-01), Richardson, Jr.
patent: 4884955 (1989-12-01), Richardson, Jr.
patent: 4997349 (1991-03-01), Richardson, Jr.
Tecumseh Products Company
Vrablik John J.
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