Permanent magnet rotor cooling system and method
US6437468B1 · kind B1 · utility
47Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Apr 10, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet rotor cooling system and method in which the rotor end cap includes an axially extending bore with a plurality of radially extending holes aligned with holes in the sleeve around the permanent magnet to provide cooling air flow to the air gap between the permanent magnet sleeve and the stator. A second smaller diameter extended bore, with a second plurality of radially extending holes, offset from the first plurality of holes, may also be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.