Shrouded fan impeller with reduced cover overlap
US9765788B2 · kind B2 · utility
7Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2014 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Nov 27, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/4226
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The described embodiments relate to improving efficiency of a low-profile cooling fan. In one embodiment, an impeller of the cooling fan includes a shroud which covers a central portion of the impeller, thereby allowing a central inlet portion of the blades to have an increased fan blade height when compared to a cooling fan constrained by minimum part tolerances between the fan blades and a portion of the fan housing. In some embodiments, the impeller includes splitter blades that can improve performance of the low-profile cooling fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.