Vacuum preventing oil seal for scroll compressor

Details Vacuum preventing oil seal for scroll compressor Vacuum preventing oil seal for scroll compressor

2005-03-08

2005-03-08

Tyler, Cheryl J. (Department: 3746)

Pumps

Expansible chamber type

Having separate noncyclic valve

C417S410500, C418S055100, C418S015000, C137S246000, C092S083000

Reexamination Certificate

active

06863510

ABSTRACT:
Disclosed is a vacuum preventing device for a scroll compressor comprising: a chamber formed at one side of a fixed scroll and having a suction hole, a compression hole, and a discharge hole at an inner circumference surface thereof; an open/close member installed in the chamber and having a seal oil groove at an outer circumference surface thereof for selectively connecting the discharge hole to the suction hole; and an elasticity member installed in the chamber for providing an elasticity force to the open/close member. The device can enhance a compression efficiency of the compressor by preventing gas leakage efficiently and reduce a fabricating cost by improving a design of a clearance and enhancing a tolerance limit range.

REFERENCES:
patent: 17855 (1857-07-01), Gale
patent: 2753892 (1956-07-01), Clinton et al.
patent: 3596871 (1971-08-01), Rothrock
patent: 4294161 (1981-10-01), Sheppard
patent: 4391580 (1983-07-01), Hunsberger et al.
patent: 4690625 (1987-09-01), Murayama et al.
patent: 4841846 (1989-06-01), Grambling
patent: 5049044 (1991-09-01), Hirano
patent: 6-288361 (1994-10-01), None
Derwent Abstract 2002-088245; KR 2001076882 A, Aug. 17, 2001.

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