Axial flow fan
US5616004A · kind A · utility
35Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Apr 19, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/307
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An axial flow fan has a hub with a back plane that is perpendicular to the axis of hub rotation. The leading and trailing edges of the fan blades that bound the inner region of the respective blades are in general radial alignment with the hub. The leading portion of the tip region is swept forward relative to the back plane and the trailing portion of the tip region is swept in the opposite direction. The forward swept tip region forms an acute angle with the back plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.