Ventilation system for an AC machine having overhanging salient poles with juxtaposed shrouds
US5757094A · kind A · utility
18Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1997 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of improving the airflow through a low to medium speed salient pole dynamoelectric machine DEM is disclosed. The rotor rim on which the salient poles are mounted is shortened in comparison to prior art structures so that the ends of the salient poles (and the rotor windings) protrude a substantial distance beyond the edge of the rim. A stationary or rotating shield is placed in juxtaposed relationship with the rotating ends of the salient poles to provide an enclosure so that the protruding ends of the salient poles can function as a crude radial fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.