Air fuel mixer for gas turbine combustor having slots at downstream end of mixing duct
US5638682A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Sep 23, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/14021
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air fuel mixer is disclosed having a mixing duct, a set of inner and outer counter-rotating swirlers adjacent the upstream end of the mixing duct, and a hub separating the inner and outer swirlers to allow independent rotation thereof, wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and fuel is injected into the mixing duct so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when the fuel/air mixture is exhausted out the downstream end of the mixing duct into the combustor and ignited. In addition, the mixing duct of the mixer includes slots, preferably with flares associated therewith, at its downstream end which modify the shape and direction of mixing eddies emanating therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.