Scroll compressor having a back pressure partitioning member

Details Scroll compressor having a back pressure partitioning member Scroll compressor having a back pressure partitioning member

1997-02-24

1998-12-15

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, F04C 1804, F04C 2700

Patent

active

058488839

ABSTRACT:
A scroll compressor is designed to exert a stable pressure on the rear surface of the rotary scroll without causing excessive pressure rise or pressure gradient by the lubricating oil which flows out from a back pressure partitioning member in a very little gap of an axial supporting portion. A bearing member 18 has an inner portion extending radially inwardly from annular groove 22 and an outer portion extending radially outwardly from the annular groove 22 to an inner edge of an axial supporting portion 24. The inner and outer portions of the bearing member 18 are formed in a bottom portion of the bearing member 18 and have a difference in level d relative to a bottom surface of the axial supporting portion 24.

REFERENCES:
patent: 5085565 (1992-02-01), Barito

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