Cooling fan built into rotor
US7952241B2 · kind B2 · utility
20Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Jul 22, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cooling fan includes a fan ring to be attached to an end surface of a rotor core near the outer circumference thereof, and a plurality of fins connected to the fan ring. The fan ring has positioning leg portions provided on an end surface thereof facing a thrust direction. The fan ring is positioned in relation to the rotor core through insertion of the positioning leg portions into core slots of the rotor core. The fan ring has wire accommodation recesses which are formed on the end surface of the fan ring facing the thrust direction and communicate with the core slots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.