Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1998-07-24
2000-08-22
Denion, Thomas
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 551, 4174105, 184 618, F04C 1800
Patent
active
061062545
ABSTRACT:
A closed-type scroll compressor comprising a closed housing (8) formed with a low-pressure chamber (45) and a high-pressure chamber (44), a scroll-type compression mechanism (C) having a swirling scroll (1) and a fixed scroll (2) and disposed in said low-pressure chamber (45), a frame (6) for fixing said fixed scroll (2) provided with a first oil drainage passage (62), a motor (M) for driving said scroll-type compression mechanism (C) made up of a stator (Mb) provided with a second oil drainage passage (84) and a rotor (Ma), a shaft (5) provided in a second oil drainage passage (52) for transmitting a driving force of said motor (M) to said scroll-type compression mechanism (C), characterized by providing a connection oil drainage passage (93) that is formed by a trough (90) and an inner circumferential surface of said closed housing (8) and whose inlet end is located near an outlet of said first oil drainage passage (62) and whose outlet end is located near an inlet of said second oil drainage passage (84).
REFERENCES:
patent: 4065279 (1977-12-01), McCulough
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patent: 4564339 (1986-01-01), Nakamura et al.
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patent: 5304045 (1994-04-01), Hoshino et al.
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patent: 5810573 (1998-09-01), Mitsunaga et al.
Hirooka Katsumi
Mizuno Hisao
Denion Thomas
Mitsubishi Heavy Industries Ltd.
Trieu Thai-Ba
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