Patent ID: 8863525
Filing Date: 2014-10-21
Classification: F23D,F23R

Abstract:
1. A combustor, comprising: an air flow path with a flow of air therein; a flow obstruction positioned within the air flow path; the flow obstruction causing a wake or a recirculation zone downstream thereof; a first fuel injector positioned downstream and outside of the wake or the recirculation zone of the flow obstruction; and a second fuel injector, adjacent to and axially aligned with the first fuel injector, positioned downstream and in line with the flow obstruction, the second fuel injector within the wake or the recirculation zone of the flow obstruction and configured to be an unfueled fuel injector; wherein the first fuel injector is configured to inject a flow of fuel into the air flow path at the same time that the second fuel injector is unfueled such that flows of fuel and air in the wake or the recirculation zone do not exceed a flammability limit therein; and the first and second fuel injectors comprise an airfoil-like shape, such that air flows about each side of the first and second fuel injectors.