Rotary expansible chamber devices – Helical working member
Patent
1997-12-24
2000-06-27
Denion, Thomas
Rotary expansible chamber devices
Helical working member
418 94, 418 96, 418 88, F01C 2108
Patent
active
060799676
ABSTRACT:
A fluid compressor comprises a sealing case, an oil reservoir formed to an inner bottom portion of the sealing case, in an installed state, for storing an lubricating oil and a compression mechanism having a helical blade structure housed in the sealing case. The compression mechanism comprises a cylinder, a rotating member arranged in the cylinder so as to perform eccentric motion and a helical blade interposed between the rotating member and the cylinder for defining a plurality of partitioned compression chambers. The fluid compressor further comprises an electric motor unit housed inside the sealing casing in operative connection to the compression mechanism. The compression mechanism has a vertical structure in which the fluid is compressed and transferred in a perpendicular direction in the installed state. The compression mechanism is provided with a sucking portion for the fluid to be compressed to a portion below the rotating member, the rotating member is provided with an end surface located on the side of the sucking portion for defining a thrust surface which is supported by a bearing, and the thrust surface of the rotating member is immersed in the lubricating oil supplied from the oil reservoir.
REFERENCES:
patent: 5174737 (1992-12-01), Sakata et al.
patent: 5388969 (1995-02-01), Fujiwara et al.
patent: 5558512 (1996-09-01), Fujiwara et al.
Denion Thomas
Kabushiki Kaisha Toshiba
Trieu Thai-Ba
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