Fan blade system with multiple spaced layers of blades and centrifugal fan using same
US9206808B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 2012 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Apr 2, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/281
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan blade system with multiple spaced layers of blades and a centrifugal fan using same are disclosed. The centrifugal fan includes a housing, in which the fan blade system is mounted. The fan blade system includes a hub, and a first and a second blade group outward extended from a circumferential wall of the hub to axially space from each other. The housing includes a main housing portion and a secondary housing portion integrally formed on one side of the main housing portion. When the fan blade system is mounted in the housing, the two blade groups are separately located in the main housing portion and the secondary housing portion to produce higher airflow pressure and more air volume. With these arrangements, the centrifugal fan can have upgraded performance and be manufactured with reduced labor, time and material costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.