Duct and method for damping pressure waves caused by thermoacoustic instability
US9169804B2 · kind B2 · utility
1Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Jun 25, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23R2900/00014
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A duct and a method for damping pressure waves caused by thermoacoustic instability, the duct comprising: a locking Helmholtz resonator positioned on the circumference of the duct, the locking Helmholtz resonator tuned to a first frequency; and one or more damping Helmholtz resonators positioned on the circumference of the duct at or adjacent to 90 and/or 270 degrees from the locking Helmholtz resonator, wherein the damping Helmholtz resonators are tuned to a second frequency which is different from the first frequency of the locking Helmholtz resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.