Scroll type compressor

Details Scroll type compressor Scroll type compressor

1995-06-16

1997-01-14

Freay, Charles G.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

With pump for non-working fluid

418 94, 418 98, 418151, 184 616, F01C 2104

Patent

active

055932975

ABSTRACT:
In a scroll type compressor, a simple structure provides oil intake assistance to ensure that lubricating oil in an oil space is induced into a spiral groove in correspondence to the rotation rate of a drive shaft. The drive shaft is provided with an inclined spiral groove which is formed in the external circumferential surface of the drive shaft. The drive shaft slides in contact with a main bearing. A leading end of the spiral groove, in the direction of the rotation of the drive shaft, communicates with the oil space and a trailing end of the spiral groove opens into the lubricating oil reservoir. The lubricating oil is supplied to the area where the drive shaft slides in contact with the main bearing by the spiral groove. Also, upon rotation of the drive shaft, intake of lubricating oil into the spiral groove is assisted when the suction force is reduced due to a high rotation rate.

REFERENCES:
patent: 4828466 (1989-05-01), Kim
patent: 5263822 (1993-11-01), Fujio

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