Gas-cooled electrical machine with pressure charging
US7271515B2 · kind B2 · utility
6Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2005 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Nov 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas-cooled electric machine includes a generator housing, a rotor shaft, at least one axial fan disposed on the rotor shaft inside the generator housing and having a hub, and a pressure boosting apparatus associated with the axial fan and configured to raise an absolute pressure in a generator interior. The pressure boosting apparatus has at least one flow channel between an interior of the hub and the generator interior and is at least partially delimited by the hub. A flow inlet into the flow channel and a flow outlet out of the flow channel are disposed radially at a distance with respect to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.