Centrifugal fan
US7748954B2 · kind B2 · utility
34Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2007 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Jan 6, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/282
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal fan includes a space in which the dimension between a shroud-facing wall and a shroud, from the outer peripheral side to the inner peripheral side of the shroud, is substantially uniform, wherein the shroud-facing wall includes a recess extending in the circumferential direction, the recess being disposed at the inner peripheral side of the outer peripheral end of the shroud-facing wall forming the space having the uniform dimension so that the recess forms a space larger than the other part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.