Patent ID: 9310072
Filing Date: 2016-04-12
CPC Classification: F23C,F23R

Claim Text:
1. A fuel nozzle arrangement comprising: an annular combustor having four quadrants; a plurality of fuel injectors disposed in the four quadrants; and a plurality of fuel nozzles of a first type and second type disposed onto the plurality of fuel injectors so that each fuel injector of the plurality of fuel injectors has either one first type fuel nozzle or one second type fuel nozzle attached to it, wherein the first type fuel nozzles are configured to provide a higher fuel flow than the second type fuel nozzles; wherein the plurality of fuel injectors with attached first type and second type fuel nozzles are disposed with varying circumferential spacing which defines a circumferential array of the first type fuel nozzles and second type fuel nozzles in which at least two fuel nozzles of the same type are adjacent to each other, wherein the plurality of fuel nozzles of the circumferential array are spaced non-uniformly so that circumferential spacing between any two adjacent second type fuel nozzles is less than circumferential spacing between a second type fuel nozzle and an adjacent first type fuel nozzle, and the circumferential spacing between the second type fuel nozzle and the adjacent first type fuel nozzle is less than circumferential spacing between any two adjacent first type fuel nozzles, wherein adjacent fuel nozzles do not have any other fuel nozzle between them.