Scroll type fluid machinery with reduced pressure biasing the st

Details Scroll type fluid machinery with reduced pressure biasing the st Scroll type fluid machinery with reduced pressure biasing the st

1992-11-06

1994-07-19

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 57, F01C 104

Patent

active

053304632

ABSTRACT:
A scroll type fluid machinery has a stationary scroll and revolving scroll with spiral elements set up at end plates thereof. The scrolls respectively, are engaged with each other, and a high pressure fluid chamber is formed on the outside of the end plate of the stationary scroll. A low pressure fluid chamber or an intermediate pressure fluid chamber is formed between the end plate of the stationary scroll and the high pressure fluid chamber. As a result, the pressure of a low pressure fluid or an intermediate pressure fluid acts on the outside of the end plate of the stationary scroll. Accordingly, deformation of the end plate is prevented or reduced, and reliability of the fluid machinery may be improved.

REFERENCES:
patent: 3874827 (1975-04-01), Young
patent: 4767293 (1988-08-01), Caillat et al.

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