Exhaust silencer with baffles
US8596568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2220/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An exhaust silencer assembly includes an exhaust duct and an exhaust silencer. The exhaust silencer is disposed about the exhaust duct and has a plurality of solid baffles and at least one perforated baffle The exhaust silencer assembly is disposed downstream of an auxiliary power unit and at least partially attenuates the downstream noise of the combustion gases that result from operation of the auxiliary power unit. In one embodiment, at least one of the plurality of solid baffles is disposed to extend axially between generally radially extending solid baffles, perforated baffle(s), or partially perforated baffles. The axially extending solid baffle allows for cavity depth variation in the silencer to optimize tuning of particular frequencies from the auxiliary power unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.