Rotary compressor with sealing portions and oil-supply groove

Details Rotary compressor with sealing portions and oil-supply groove Rotary compressor with sealing portions and oil-supply groove

2008-01-29

2008-01-29

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Non-working fluid passage in inner working or reacting member

C418S055100, C418S055400, C418S055600, C184S006180

Reexamination Certificate

active

07322809

ABSTRACT:
In a rotary compressor to perform oil supplying to bearings through a main oil-supply passage formed in a drive shaft by making use of pressure differential between high-level pressure and low-level pressure in the casing, sealing portions having air-tight structures are formed at both sides in the axis direction of each of the sliding faces constituted between the drive shaft and the bearings, putting bearing-portion oil-supply passages between the sealing portions, to improve the reliability of the bearings by preventing high-pressure gas flowing into a portion between the drive shaft and the bearings.

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