Device for reducing the generation of noise in fans
US5584653A · kind A · utility
3Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Nov 1, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/667
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for reducing the generation of noise in a fan (11) having a gas intake channel (13), a gas discharge channel (14) and a gas propulsion device (15), in particular a side channel fan for supplying combustion air in a heater. At least in the regions of the opening cross-section (18, 19) of the gas intake channel (13) and/or the gas discharge channel (14) there is disposed structure for inducing a flow resistance (interference structure 20, 21).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.