Centrifugal fan impeller structure
US9777742B2 · kind B2 · utility
4Cited by
12References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2012 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Apr 13, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/666
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal fan impeller structure includes a hub having multiple blades. The blades extend from a circumference of the hub in a direction away from the hub. Each two adjacent blades define therebetween a flow way, an air outlet and an air inlet. The air outlet and the air inlet are respectively positioned at two ends of the flow way in communication with the flow way. The air outlets are arranged at unequal intervals so as to greatly reduce noise in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.