Internal cooling fan with a non-repeating blade configuration
US7365471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2005 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Oct 28, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An internal cooling fan assembly for use with a claw-pole segment of a rotor assembly is provided that maximizes air flow while providing a reduced sound signature. The fan assembly includes a base portion that contacts the claw-pole segment when the fan assembly is mounted to the claw-pole segment. The fan assembly also includes a number of blades extending from the base portion such that the blades project outward from a plane normal to the rotor. The plurality of blades have a geometry that aligns with roots of the claw-pole segment. In addition, a first blade of the number of blades is of a first configuration and a second blade of the number of blades is of a second configuration different from the first configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.