Reciprocating compressor having crankshaft with lubrication-cond

Details Reciprocating compressor having crankshaft with lubrication-cond Reciprocating compressor having crankshaft with lubrication-cond

1996-10-07

1998-08-18

Thorpe, Timothy

Pumps

Motor driven

Interrelated or common lubricating or cooling means for pump...

184 618, 184 61, F04B 1700

Patent

active

057951403

ABSTRACT:
A reciprocating compressor includes a housing in which lubricating oil is stored, and an electric motor for driving a vertical crankshaft connected to a piston for reciprocating the piston. The crankshaft includes an outer peripheral contact surface rotatably mounted in the bearing. An oil passage is formed in the crankshaft, the oil passage having an oil inlet submerged in the oil, and an oil outlet communicating with the contact surface for conducting oil to the contact surface in response to rotation of the crankshaft. The contact surface includes spiral races formed therein in circumferentially spaced relationship to the oil outlet for reducing the size of the contact surface and hence reducing the amount of friction produced between the contact surface and the bearing.

REFERENCES:
patent: 3068820 (1962-12-01), Ketteren et al.
patent: 4236877 (1980-12-01), Abe
patent: 4568253 (1986-02-01), Wood
patent: 4901819 (1990-02-01), Tamba et al.
patent: 5228843 (1993-07-01), Novolan et al.

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