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US 5,307,634 AGranted
Premix gas nozzle
AssigneeUnited Technologies Corporation
InventorAaron S. Hu
Life of this patent
Estimating the term…
Abstract
A premix gas nozzle has longitudinal tangential entrance slots to a cylindrical chamber. There is an axially increasing flow area toward the chamber outlet, with pilot fuel centrally introduced near the outlet. A lean mix low NOx fuel nozzle is thereby stabilized.
Claims8
A low NOx burner for a gas turbine engine, comprising:
- a substantially cylindrical burner chamber having an axis and an axially extending chamber wall, and having an upstream end and an outlet end;
- at least one longitudinally extending slot in the wall of said cylindrical chamber, said slot having a slot wall tangential to said chamber wall;
- supply means for supplying air through said slot;
- a gas distribution manifold located adjacent said slot and having a plurality of axially spaced openings for delivering gas into the airflow as it passes into said slot;
- a conical body located in said chamber on the axis of said chamber with the base of said conical body at the upstream end of said chamber and the apex of said conical body toward the outlet end of said chamber;
- and
- a gas pilot tube having a discharge opening through said conical body at the apex end.
4 more elements
Dependencies are inferred from the claim text.