Gas turbine engine combustion chamber
US5640851A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Oct 23, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23R3/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A combustion chamber which has a primary combustion zone and a secondary combustion zone is provided with a plurality of secondary fuel and air mixing ducts arranged around the primary combustion zone. The secondary fuel and air mixing ducts are defined by a pair of annular walls and by a plurality of walls extending radially between the annular walls. Each secondary fuel and air mixing duct has an aperture to direct a fuel and air mixture into the secondary combustion zone. The apertures have the same flow area. Each secondary fuel and air mixing duct has one or more fuel injectors to inject fuel into the upstream end of the secondary fuel and air mixing duct. This arrangement ensures that the fuel/air ratio emitted from each aperture is within 3.0% of the mean fuel/air ratio of all the apertures even though the air flow to the secondary fuel and air mixing ducts is non-uniform
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.