Centrifugal fan
US7500826B2 · kind B2 · utility
1Cited by
0References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | May 15, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/626
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal fan includes a spiral-shaped housing with a driving mechanism and multiple internally mounted centrifugal impellers. The driving mechanism is mounted on a circular base. At least two support brackets links the circular base to the spiral-shaped housing, wherein profiles of the support brackets are involute curves based upon the circular base. The multiple centrifugal impellers, driven by the driving mechanism, suck airflow into the spiral-shaped housing through void spaces among the support brackets. The centrifugal impellers are perpendicular to the support bracket profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.