Rotary-linear vane guidance in a rotary vane pumping machine
US6120273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Nov 4, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C1/32
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary vane pumping machine having a rotary-linear vane guidance structure, including a translation ring disposed at each axial end of the pumping machine, the translation ring rotating around a fixed hub, with the fixed hub being eccentric to a rotor shaft axis, with the rotor spinning around the rotor shaft axis which is a fixed rotational axis relative to a stator cavity. A plurality of vanes are disposed in a corresponding plurality of vane slots in the rotor, each of the vanes having a tip portion and a base portion, with the base portion having a protruding tab extending from each axial end therefrom. A plurality of linear channels are formed in each translation ring, wherein the protruding tabs extending from the base portion of each of the plurality of vanes communicate with a respective linear channel in the translation ring, whereby the rotor rotation causes rotation of the vanes and a corresponding rotation of the translation ring. The stator cavity has a contoured sealing profile determined from a continuous path traced by the tips of the vanes as the rotor spins around the rotor shaft axis and the translation ring rotates around the eccentric fixed hub, thereby creat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.