Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1993-05-04
1994-08-30
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 553, 418 555, 29888022, 464102, F01C 104, B23P 1500
Patent
active
053421841
ABSTRACT:
A scroll machine designed to provide an unbalanced loading of the orbiting scroll and anti-rotation coupling in a direction which adds to the moment caused by contact forces between the scroll wraps during normal operation. The loading decreases the sound level of the machine and is achieved through the use of unbalanced flank gas leakage forces and flank contact forces, which are created by providing a targeted initial swing radius bias and/or a generating radius bias to either one or both of the scroll wraps. The generating radius biasing can be singular or plural on a given scroll wrap set. A number of different techniques for obtaining such biasing are disclosed.
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Bass Mark
Caillat Jean-Luc
Clendenin Harry B.
Comparin Robert J.
Fairbanks Steven C.
Copeland Corporation
Vrablik John J.
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