Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working and working fluids intermix in working chamber
Patent
1995-07-21
1996-09-03
Freay, Charles G.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Non-working and working fluids intermix in working chamber
418 554, 418 556, 418 94, F01C 2104, F01C 104
Patent
active
055518524
ABSTRACT:
A scroll type compressor including a drive shaft which is provided with a spiral groove formed in an external circumferential surface of the drive shaft. The spiral groove communicates diagonally between the oil space and the upper portion of the main bearing to ensure sufficient lubrication and sealing in the area where the drive shaft slide in contact with the main bearing. A seal bearing portion is positioned between the oil space and the low pressure space to isolate the oil space from the low pressure orbiting space, achieving an improvement in lubrication. The seal bearing portion is constituted with a seal washer, a seal bearing and a seal member, and, furthermore, with seal reinforcing material, to especially improve the seal between the oil space and the oscillation space.
REFERENCES:
patent: 5192136 (1993-03-01), Thompson et al.
patent: 5263822 (1993-11-01), Fujio
patent: 5413469 (1995-05-01), Nakajima et al.
Harada Kiyohiro
Ishikawa Masakuni
Kazahaya Yukio
Kuchiki Seiji
Nakajima Nobuyuki
Freay Charles G.
Zexel Corporation
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