Hermetic reciprocating compressor having an oil guiding path

Details Hermetic reciprocating compressor having an oil guiding path Hermetic reciprocating compressor having an oil guiding path

1997-10-16

1999-10-26

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

184 66, F04B 3504

Patent

active

059717246

ABSTRACT:
A hermetic reciprocating compressor is provided. The compressor comprises: a hermetic casing formed with an oil container at the bottom thereof; a driving motor having a stator installed inside the casing, a rotor rotatably installed inside the stator and a rotating shaft rotating with the rotor, the rotor having a journal and an eccentric portion; a sliding bearing for supporting the rotation of the journal of the rotating shaft; an oil pickup device extending downward from a lower end portion of the eccentric portion, for supplying a lubricating oil contained in the oil container between the journal of the rotating shaft and the bearing; and a medium compressing portion having a cylinder block which is provided with a cylinder, a piston reciprocating inside the cylinder and a connecting rod for connecting the piston to the eccentric portion of the rotating shaft to convert the rotational movement of the rotating shaft into the reciprocating movement of the piston inside the cylinder, wherein the cylinder block has at least one oil guiding path for guiding the lubricating oil flowing downward along the outer surface of the bearing into the oil container. Accordingly, collection and boiling of the oil on the cylinder block can be prevented, thereby preventing noises and deterioration of the oil. Furthermore, part of the oil returning to the oil container is directed to the connecting rod, thereby enhancing the lubricating efficiency.

REFERENCES:
patent: 5118263 (1992-06-01), Fritchman

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