Main bearing lubrication system for scroll machine

Pumps – Motor driven – Including means utilizing pump fluid for augmenting cooling,...

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417372, 417902, 418 55, 418 88, 418 94, 418101, F04B 3902, F01C 102, F01C 2104

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active

044888554

ABSTRACT:
A system for lubricating the main drive shaft bearings in a scroll compressor enclosed within a hermetic shell. The drive shaft and its main bearings are supported in a frame that defines first and second chambers adjacent each end of a main bearing. Each of the chambers includes an opening to a spatial volume contained within the compressor shell. An oil pump at the lower end of the drive shaft supplies oil through a bore in the shaft to a swing link bearing and a thrust bearing, both disposed adjacent its upper end. Oil is dispersed into the spatial volume as a mist of oil droplets by the rotating elements connected to the drive shaft. Fan means are disposed within the second chamber and are operative to develop a differential pressure between the two chambers so that oil droplets are drawn toward the first chamber, lubricating the main bearing as they pass through it.

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patent: 4389171 (1983-06-01), Eber et al.
patent: 4403927 (1983-09-01), Butterworth et al.

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