Alternator for vehicle
US5763968A · kind A · utility
12Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1997 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Apr 21, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/54
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An alternator has front and rear cooling fans to effectively cool the stator windings and field coil of the alternator. The front cooling fan has a first number (e.g. six) of diagonal-flow type blades for cooling mainly the field coil and a second number (e.g. five) of centrifugal-flow-type blade for cooling the stator windings which are disposed between the diagonal-flow-type blades. The combination of the first and second numbers is designed to suppress noise level caused by the cooling fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.