Rotary compressor lubrication arrangement

Details Rotary compressor lubrication arrangement Rotary compressor lubrication arrangement

F - Mech Eng,Light,Heat,Weapons

04

C

230/89

F04C 29/02 (2006.01) F04C 23/00 (2006.01)

Patent

CA 1274494

ABSTRACT In a rotary hermetic compressor an improved lubrication arrangement is provided for the sliding cylinder vanes. An oil pump in the lower portion of the crankshaft extends into the oil sump of the compressor. The oil pump comprises an axial aperture in the crankshaft which angles diagonally radially outwardly in the upward direction. Oil is pumped through this aperture into an annulus surrounding the crankshaft. A passageway in the outboard bearing conducts the oil radially outwardly from the annulus and then upwardly against gravity to a vertical oil channel which is open to both sides of the sliding vane and adjacent thereto. The positive pressure provided by the oil pump will ensure that the oil channel is filled with oil at all times. Excess oil exits at the upper end of the vane through a relief in the main bearing and then flows down around the cylinder by gravity and into the oil sump.

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