Lubrication oil volume control device in a scroll type compresso

Details Lubrication oil volume control device in a scroll type compresso Lubrication oil volume control device in a scroll type compresso

1991-09-16

1993-06-22

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 84, 418 87, 418 94, 137 56, 184 618, F04C 1804, F04C 2902, F01M 106, G05D 1310

Patent

active

052211991

ABSTRACT:
A scroll compressor includes a stationary scroll and a rotary scroll rotated by a motor-driven crankshaft. The crankshaft has parallel passages therein which communicate at their lower ends with a pool of lubricating oil. A first of the passages coincides generally with the axis of rotation of the crankshaft at an inclination thereto, and a second of the passages is eccentrically offset. The crankshaft drives a pump which creates a suction in the passages to conduct oil from the pool to the scrolls. A control member is connected to the crankshaft for rotation therewith and is responsive to centrifugal force for gradually closing the second passage as the crankshaft speed exceeds a predetermined value. The amount of oil which is conducted is thus proportional to the crankshaft speed.

REFERENCES:
patent: 4343599 (1982-08-01), Kousokabe

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