Horizontal shaft oil pump

Details Horizontal shaft oil pump Horizontal shaft oil pump

F - Mech Eng,Light,Heat,Weapons

04

C

230/89

F04C 29/02 (2006.01)

Patent

CA 1221070

ABSTRACT A horizontal shaft oil pump is provided for use in a compressor comprising an outer housing having an inlet, an outlet, an oil pump, and a crankcase mounted therein. The crankcase has a generally vertically disposed passageway therein in communi- cation with the oil sump, and a crankshaft is horizontally rotatably received in a bore in the crankcase. A reduced diameter portion of the crankshaft forms between the crankshaft and crankcase an annular chamber in communication with the passageway, and a pair of oppositely angularly disposed helical grooves are disposed in the crankshaft on opposite sides of and in communication with the annular chamber. Upon rotation of the crankshaft, a low pressure area is developed in the annular chamber causing lubricant to be drawn upwardly through the crankcase passageway and into the annular chamber. The rotating helical grooves deliver lubricant from the annular chamber to opposite end portions of the crankshaft for lubricating bearings and other moving parts.

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