Electric machine with means for guiding cooling air supplied from outside of the machine
US5317224A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | May 12, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The electric machine, advantageously a generator, includes a machine housing with two end shields, a lamination bundle provided with a stator winding having winding heads and a rotor in the housing. To improve the cooling effect and reduce aerodynamic flow noise the machine housing is provided with at least one air guiding duct enclosing circularly at least one winding head on one side of the lamination bundle and the at least one air guiding duct is provided with at least one inlet opening and at least one outlet opening for cooling air to carry away heat dissipated during operation, and each of the at least one air guiding ducts is bounded exteriorly by one of the end shields of the machine housing and interiorly by one of the two annular walls inserted between the lamination bundle and the end shield bounding the at least one air guiding duct exteriorly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.