Method and apparatus for enhanced scroll stability in a co-rotational scroll
US5142885A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C21/003
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-aligned axes to produce a relative orbital motion, a mass secured to at least one of the scrolls for enhancing the nutational stability of the scroll member. Preferably, the nutation reducing means includes a mass affixed to an end plate of the scroll member to induce a dynamic imbalance during rotation of the scroll member, creating a balancing or moderating moment sufficient to compensate for the moment induced by the varying pressure of the fluids in the various compression chambers during the rotation of the scroll member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.