Back to results
US 7,007,864 B2Granted
Fuel nozzle design
AssigneeUnited Technologies Corporation
InventorsTimothy S. Snyder, James B. Hoke
Life of this patent
Estimating the term…
Abstract
The present invention relates to a fuel nozzle for use in an engine such as a gas turbine engine. The fuel nozzle includes a fuel injector for injecting fuel into a combustion chamber of the engine and a plurality of rows of holes surrounding the fuel injector for eliminating recirculation of hot gas products onto a face of the fuel nozzle. The holes eject air primarily in an axial direction.
Claims11
A fuel nozzle for use in an engine comprising:
- means for injecting fuel into a combustion chamber of said engine;
- means surrounding said fuel injecting means for eliminating recirculation of hot gases onto a face of said fuel nozzle, said recirculation eliminating means comprising a plurality of rows of holes wherein each of said holes is provided with a flow of air at a velocity sufficient to prevent said recirculation;
- wherein said holes eject air primarily in an axial direction, each of said rows having an annular arrangement of said holes;
- each of said rows including a plurality of holes;
- each of said holes having the same diameter;
- and
- each of said holes being spaced apart a distance in the range of between 1.5 and 3.0 diameters.
4 more elements
A fuel nozzle for use in an engine comprising:
- a fuel injector for injecting fuel into a combustor chamber;
- a plurality of holes surrounding said fuel injector for generating a primarily axial flow of air sufficient to eliminate recirculation of hot gas products onto a face of said fuel nozzle;
- said plurality of holes arranged into two concentric rows of holes;
- and
- each of said holes having the same diameter and being spaced from each of its adjacent holes by a distance within the range of 1.5 to 3.0 times said diameter.
2 more elements
Dependencies are inferred from the claim text.