Pilot burner having burner face with radially offset recess
AssigneeSiemens Aktiengesellschaft
InventorsEoghan Buchanan, Suresh Sadasivuni
Life of this patent
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Abstract
A burner includes a pilot burner, a combustion chamber, and a swirler located radially outwardly of the combustion chamber and being adapted to impose a swirling motion on a fuel/air mixture about an axial centerline of the combustion chamber. The pilot burner has a pilot burner face located radially inwardly of the swirler and forms an axially upstream wall of the combustion chamber, the pilot burner face incorporating a pilot fuel injector and an ignitor, both being positioned radially offset from the axial centerline. A recess is positioned radially offset from the axial centerline within the pilot burner face.
Claims13
A burner comprising:
- a pilot burner, a combustion chamber, and a swirler located radially outwardly of the combustion chamber and being adapted to impose a swirling motion on a fuel/air mixture about an axial centerline of the combustion chamber,
- wherein the pilot burner comprises a pilot burner face located radially inwardly of the swirler and forming an axially upstream wall of the combustion chamber, the pilot burner face incorporating a pilot fuel injector and an ignitor, both being positioned radially offset from the axial centerline, and a recess being positioned radially offset from the axial centerline within the pilot burner face, the recess having a center that is remote from the axial centerline and being spaced apart from the pilot fuel injector and the ignitor, the recess comprising a depression in the pilot burner face configured to create a local aerodynamic effect on the swirling motion of the fuel/air mixture effective to draw droplets of fuel in the fuel/air mixture toward the ignitor.
A gas turbine engine burner comprising:
- a combustion chamber partially defined by a burner face;
- a fuel injector and an ignitor disposed proximate the burner face and remote from an axial centerline of the combustion chamber;
- a swirler adapted to impose a swirling motion on a fuel/air mixture about the axial centerline within the combustion chamber, and
- the burner face comprising a recess spaced apart from the fuel injector, the ignitor and the axial centerline, the recess having a center that is remote from the axial centerline, wherein the recess is configured to create a relative low pressure region in the swirling fuel/air mixture effective to draw droplets of fuel in the fuel/air mixture toward the ignitor.
Dependencies are inferred from the claim text.