Scroll compressor having a back pressure chamber comprising...

Details Scroll compressor having a back pressure chamber comprising... Scroll compressor having a back pressure chamber comprising...

2005-08-30

2005-08-30

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S057000, C418S055600

Reexamination Certificate

active

06935852

ABSTRACT:
A scroll compressor, whose back pressure is easily controlled and compression efficiency is high, is provided. The scroll compressor includes a plurality of compression chambers formed by engaging a fixed-scroll wrap and an orbiting-scroll wrap, and a back pressure chamber formed at an opposite side of the orbiting-scroll wrap of a orbiting-scroll. The scroll compressor additionally includes a high pressure chamber and a middle pressure chamber, which are formed by dividing the back pressure chamber using a seal. Moreover, the scroll compressor includes a first path for supplying lube oil from the high pressure chamber to the middle pressure chamber, and a second path for supplying the lube oil from the middle pressure chamber to an suction chamber of the compression chambers. The first path is intermittently opened by orbit of the orbiting-scroll.

REFERENCES:
patent: 5645408 (1997-07-01), Fujio et al.
patent: 0 822 335 (1998-02-01), None
patent: 05-187369 (1993-07-01), None
patent: 05-306689 (1993-11-01), None
patent: 11-22665 (1999-01-01), None
patent: P2000-213476 (2000-08-01), None

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