Two-stage cooling fan for an electric generator
US8125110B2 · kind B2 · utility
1Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2007 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Feb 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/1815
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An engine driven generator (17) is provided with first and second stage fans (41,42) at one end thereof. The two-stage fan system draws in ambient air and forces it through the generator windings (38) and rotor-stator air gap (37,39) for the purpose of improving generator cooling. Stationary guide vanes (49) are disposed between the two fans (41,42) for the purpose of de-swirling the flow therebetween. The fans are of the centrifugal type and are preferably backward curved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.