Fan blade flow enhancing device
US5863182A · kind A · utility
6Cited by
17References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Jun 9, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/384
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An attachment for improving the efficiency of a fluid circulation device such as a fan comprises a back connector portion for connecting to a fan blade and a lobe which protrudes from a leading edge of the fan blade. An impeller has a plurality of fan blades extending from a central hub, and the impeller is rotated by an electrical motor. The impeller is housed within a fan guard. As the impeller is rotated, the lobes operate to pick up air passing around the preceding blade and continue accelerating the air to increase efficiency and flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.