Blade structure for centrifugal fan
US9267507B2 · kind B2 · utility
8Cited by
1References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2011 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | May 31, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blade structure for centrifugal fan includes a hub, a first blade unit, and a second blade unit. The hub includes at least one connection section, to a radially outer end of which an annular body is connected. The annular body has a first side and an opposite second side; and the first and the second blade unit are arranged on and spaced along the first and the second side of the annular body, respectively. By providing the first and the second blade unit around the hub of a centrifugal fan, the air flows and pressure produced by the centrifugal fan can be largely increased at effectively reduced noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.