Radial compliance mechanism for corotating scroll apparatus
US5609478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1995 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Nov 6, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/0057
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A scroll type fluid handling apparatus, such as a refrigeration compressor, has co-rotating driver and idler scroll members supported for rotation about offset, generally parallel axes. The idler scroll member has a support shaft which is supported on the compressor housing by a pivot bushing having an eccentric pivot axis which permits radially compliant movement of the idler scroll along a line of action which is predetermined to provide a component of a resultant force acting between the scroll members which will urge the idler scroll wrap into engagement with the driver scroll wrap under a wide range of operating conditions to enhance the contact line seal between the scroll wraps. The idler scroll support shaft may have a bearing bore sleeved over a bearing surface on the pivot bushing and the pivot bushing supported on a stub shaft of the housing, or the idler scroll support shaft may be disposed in a bearing bore formed in the bushing which, in turn, is mounted for limited rotation in a bearing bore formed in the housing stub shaft part. Cooperating stop surfaces between the pivot bushing and the housing stub shaft limit the radial excursion of the idler scroll and its suppo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.