Scroll compressor having a rotated oldham ring
US6312236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2000 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C17/066
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A small-size scroll compressor is provided wherein strength of key portions has been enhanced without increasing ring width, ring diameter or key widths of an Oldham's ring. In the Oldham's ring 31, a rotated elliptical ring 31b is formed on x- and y-axes of coordinates by rotating an elliptical ring 31a having axes of coordinates of the major axis and the minor axis respectively in a first radial direction (X-axis) and in a second radial direction (Y-axis) by a predetermined angle in a direction reverse to the direction of revolution of the shaft, and first keys 34, 35 and second keys 37, 38 are respectively opposingly disposed in the first radial direction and in the second radial direction on the rotated elliptical ring 31b. By employing this configuration, the ring width, ring diameter or key widths of the Oldham's ring 31 do not need to be increased, and the length of arm from the point of stress concentration on the bases of the key portions can be shortened, thus relieving the bending moments of the keys and resulting in the control of vibration during high-speed, high-pressure operation and in the improvement of the durability of the key portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.