Scroll fluid machine, scroll member and processing method thereof
US5427512A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49236
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A scroll fluid machine in which, even if volute bodies on the orbiting side and on the fixed side are different in material from each other, the volute bodies can be brought to their respective strengths equal to each other, dimension can be miniaturized or reduced, and internal leakage is reduced so that an attempt can be made to improve performance. In the scroll fluid machine, a curve of either one of a orbiting outward curve and a orbiting inward curve of a volute body on the orbiting side is formed by an algebraic spiral expressed by the following equation in the form of polar coordinates r=a.multidot..theta..sup.k (here, r: radius vector, .theta.: angle of deviation, a: coefficient, k: exponent). This curve and any one of a fixed outward curve and a fixed inward curve of the volute body on the fixed side are arranged with a phase difference of about 180 degrees. Thicknesses of respective volute walls on the orbiting side and on the fixed side are adequately or suitably changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.