Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – With condition responsive control of non-working fluid
Patent
1976-08-04
1978-04-25
Vrablik, John J.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
With condition responsive control of non-working fluid
418 93, 418100, 417295, F01C 2104, F01C 2112, F04B 4902, F04C 2902
Patent
active
040860418
ABSTRACT:
A rotor is eccentrically mounted in a bore of a housing and formed with radial slots in which vanes are slidably retained. A lubricant passageway leads from an oil sump through the radially inner portions of the slots to a fluid inlet, the oil sump communicating with a fluid outlet. The high pressure in the outlet forces oil through the lubricant passageway to lubricate the vanes and urge the vanes into sealing engagement with the inner wall of the bore. Oil sucked from the inlet into the bore lubricates the outer ends of the vanes and is recovered at the outlet and returned to the oil sump. A check valve at the inlet closes when the compressor is stopped to prevent discharge of fluid and oil out the inlet. An equalizing valve acting integrally with the check valve connects the inlet to the outlet when the compressor is stopped to prevent oil from filling the inlet.
REFERENCES:
patent: 1352750 (1920-09-01), Jackson
patent: 2827226 (1958-03-01), McCormack
patent: 3072319 (1963-01-01), Cox et al.
patent: 3258198 (1966-06-01), Harlin
patent: 3582233 (1971-06-01), Bloom
Diesel Kiki Co. Ltd.
Jordan Frank J.
Vrablik John J.
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