Rotary expansible chamber devices – With signal – indicator or transparent inspection means
Patent
1987-03-05
1988-04-05
Vrablik, John J.
Rotary expansible chamber devices
With signal, indicator or transparent inspection means
418 55, 418 57, 418 96, 418100, 418151, 418188, F04C 1804, F04C 2702, F04C 2902
Patent
active
047355590
ABSTRACT:
An upper housing for rotatably supporting a driving scroll in a sealing container is provided with an annular chamber to be maintained at the atmospheric pressure. The annular chamber is communicated with a compression chamber formed between the driving and driven scrolls through a discharge conduit which is formed in the driving shaft of the driving scroll. The annular chamber is communicated with the inside of the container through a throttling path. An oil stored in the lower part of the container is induced with the compression chamber during the revolution of the both scrolls to be introduced into the annular chamber. Owing to the throttling path, the oil is stored in the annular chamber to separate the inside of the container and the annular chamber kept at the atmospheric pressure.
REFERENCES:
patent: 2883101 (1959-04-01), Kosfeld
patent: 3386648 (1968-06-01), Van Rossem
patent: 3600114 (1971-08-01), Dvorak et al.
patent: 3884599 (1975-05-01), Young et al.
patent: 4475874 (1984-10-01), Sato
patent: 4597724 (1986-07-01), Sato et al.
Hirai Tetsuo
Kakuda Masayuki
Kitora Yoshihisa
Morishita Etsuo
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
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