Variable displacement compressor

Details Variable displacement compressor Variable displacement compressor

2007-05-01

2007-05-01

Tapolcai, William E. (Department: 3744)

Refrigeration

Refrigeration producer

With lubricant handling means

C417S372000

Reexamination Certificate

active

10830340

ABSTRACT:
A variable displacement compressor for efficiently cooling and lubricating seals arranged on a rotary shaft. The seals are arranged at end portions of the rotary shaft that project from a housing of the compressor. A first lubrication chamber is defined by a first seal in the housing around the front end portion of the rotary shaft. A second lubrication chamber is defined by a second seal in the housing around the rear end portion of the rotary shaft. A shaft passage extends through the rotary shaft to connect the first and second lubrication chambers. Refrigerant gas including lubricating oil flows from a crank chamber to a suction chamber via the first lubrication chamber, the shaft passage, and the second lubrication chamber. This efficiently cools and lubricates the seals.

REFERENCES:
patent: 3039667 (1962-06-01), Kozlik
patent: 4645429 (1987-02-01), Asami et al.
patent: 5221191 (1993-06-01), Leyderman et al.
patent: 5591018 (1997-01-01), Takeuchi et al.
patent: 6675596 (2004-01-01), Iwanami et al.
patent: 6675607 (2004-01-01), Tarutani et al.
patent: 2002-081375 (2002-03-01), None
patent: 2003-286943 (2003-10-01), None

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