Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Reexamination Certificate
2006-03-24
2008-10-21
Denion, Thomas (Department: 3748)
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
C418S097000
Reexamination Certificate
active
07438539
ABSTRACT:
A hermetic type scroll compressor according to the invention includes a scroll compressor element in which an end plate of a orbiting scroll and an end plate of a fixed scroll are assembled such that they slide against each other, an electric motor element which drives the scroll compressor element, a hermetic casing housing the scroll compressor element and the electric motor element and holding lubricating oil collected at a bottom thereof, and an oil separator disposed on a discharge side of the scroll compressor element. An interior of the hermetic casing is kept at an intermediate pressure between a suction pressure and a discharge pressure. An oil return mechanism is provided, which intermittently returns lubricating oil from the oil separator to sliding parts of the orbiting scroll end plate and the fixed scroll end plate. The hermetic type scroll compressor31can be improved in performance and reliability while promoting cost reduction.
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Higa Kazuto
Kohsokabe Hirokatsu
Kuboi Daisuke
Tojo Kenji
Antonelli, Terry Stout & Kraus, LLP.
Davis Mary A
Denion Thomas
Hitachi Air Conditioning Systems Co., Ltd
The Tokyo Electric Power Company Incorporated
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