Scroll compressor having a gear oil pump accommodating reverse r

Details Scroll compressor having a gear oil pump accommodating reverse r Scroll compressor having a gear oil pump accommodating reverse r

1994-09-06

1996-02-27

Vrablik, John J.

Rotary expansible chamber devices

Self-acting unidirectional flow with reverse rotation or...

418 556, 418 88, F04C 210, F04C 2902

Patent

active

054944210

ABSTRACT:
A reliable scroll-type compressor is provided which, even when the compressor is rotated in the reverse direction by the erroneous connection of the power source terminals for example, is prevented from establishing a vacuum state within the compression chamber and no damages occur in the addendum of the stationary scroll and the orbiting scroll. The compressor includes a gear pump which includes a pump case and a pump port. The arrangement of the present invention is such that the pump case alone rotates by 180 degrees upon the reverse rotation of the motor, so that lubricating oil which is at the bottom of a hermetic vessel can be ensured to be supplied by the gear pump to each sliding portion of the compressor.

REFERENCES:
patent: 3165066 (1965-01-01), Phelps et al.
patent: 3273501 (1966-09-01), Tothero
patent: 4193746 (1980-03-01), Aman, Jr.

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