Axial flow fan having counter-rotating dual impeller blade arrangement
US6565334B1 · kind B1 · utility
96Cited by
51References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A counter-rotating axial flow fan for cooling electronic components comprising two or more impellers with narrow chord blades. At least one impeller rotates in a first direction and at least one impeller rotates in a second direction opposite to the first direction. The blades of the impellers are configured so as to cause air to flow in the same axial direction. The air flow generated by this counter-rotating fan is substantially greater than the air flow of an otherwise identical co-rotating fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.