Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1980-02-12
1982-08-10
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 88, 418100, 418DIG1, 417410, 417902, F01C 102, F01C 2104, F04C 1802, F04C 2902
Patent
active
043435998
ABSTRACT:
A scroll-type compressor constituted by a stationary scroll and a revolving scroll, and an electric motor for causing a revolving motion of the revolving scroll are disposed in a closed container. The scroll-type compressor has openings which are adapted to permit fluid compression pockets between two scrolls to be communicated with the space inside the closed container when the pressure in the pockets have been increased to a predetermined pressure intermediate between the suction and discharge pressures, so that the pressure in the closed container may be maintained at the same level as the above-mentioned predetermined pressure. The bottom part of the closed container constitutes an oil well where the lubricating oil is stored. This oil well is connected to the suction side of the compressor through an oil feed passage constituted by a capillary tube, so that the oil is fed to the compressor due to the pressure difference between the space inside the closed container and the inlet side of the compressor. An oil separating tank is disposed at the discharge side of the compressor. The lubrication oil separated by this oil separating tank is returned back into the closed container by the pressure differential between the discharge side of the compressor and the interior of the closed container.
REFERENCES:
patent: 2313387 (1943-03-01), McArthur et al.
patent: 3544240 (1970-12-01), Rundell
patent: 3884599 (1975-05-01), Young et al.
patent: 3905729 (1975-09-01), Bauer
patent: 3924977 (1975-12-01), McCullough
patent: 4091638 (1978-05-01), Mitch
patent: 4216661 (1980-08-01), Tojo et al.
Hitachi , Ltd.
Vrablik John J.
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