Fan assembly for cooling electric machine and electric machine incorporating same
US10436204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2014 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jun 3, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The subject matter described herein includes a fan assembly for cooling an electric machine and an electric machine incorporating such a fan assembly. One exemplary fan assembly according to the subject matter described herein includes a first fan annulus for surrounding a portion of an electric machine. The fan assembly further includes a fan drive circuit for driving the first fan annulus separately from a drive mechanism of the electric machine. The first fan annulus is configured to be, when rotating to cool the electric machine, mechanically disconnected from a housing and a rotor of the electric machine and separated from the housing by radial gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.