DOUBLE-ENDED SCROLL COMPRESSOR LUBRICATION OF ONE ORBITING SCROLL BEARING VIA CRANKSHAFT OIL GALLERY FROM ANOTHER ORBITING SCROLL BEARING

摘要

A scroll compressor orbiting scroll bearing lubrication system includes a scroll compressor crankshaft having a lubricating fluid gallery extending therethrough between a first stage orbiting scroll and a second stage orbiting scroll. The first stage employs an orbiting scroll radial bearing and an orbiting scroll hydrodynamic thrust bearing, while the second stage employs an orbiting scroll radial bearing and an orbiting scroll hydrostatic thrust bearing. Lubricating fluid is supplied to the second stage orbiting scroll radial bearing via the lubricating fluid gallery.

主权项

1. A scroll compressor orbiting scroll bearing lubrication system, comprising:
a lubricating fluid sump storing a lubricating fluid pressurized higher than the scroll compressor suction pressure; a compressor crankshaft comprising:
a first eccentric drive pin extending from a first end of the crankshaft, wherein the first drive pin is rotatably disposed at least partially within a first radial orbital bearing and configured to engage a first orbiting scroll comprising a baseplate and a spiral wrap element extending from the baseplate, and further comprising one or more oil passages in the baseplate;a second eccentric drive pin extending from a second end of the crankshaft, wherein the second drive pin is rotatably disposed at least partially within a second radial orbital bearing and configured to engage a second orbiting scroll; an orbiting scroll hydrodynamic thrust bearing associated with the first orbiting scroll, wherein the first radial orbital bearing and the orbiting scroll hydrodynamic thrust bearing are configured to receive lubricating fluid from the lubricating fluid sump via the one or more oil passages in the first orbiting scroll baseplate;