초록 ▼

A fuel injector 28 for gaseous and liquid fuel is disclosed. Various construction details are developed to enhance mixing and reduce nitrogen oxide emissions in a compact design. In one embodiment of the invention, the fuel nozzle 28 includes two radially spaced passages 68, 104 for air having swirl

A fuel injector 28 for gaseous and liquid fuel is disclosed. Various construction details are developed to enhance mixing and reduce nitrogen oxide emissions in a compact design. In one embodiment of the invention, the fuel nozzle 28 includes two radially spaced passages 68, 104 for air having swirlers 86, 112 and a liquid fuel passage 57 disposed between the air passages and a gaseous fuel passage 116 outwardly of the outermost air passage. In one detailed embodiment, a center body 76 is disposed in the inner air chamber to promote re-circulation of the hot gases.

대표청구항 ▼

A fuel injector for a gas turbine engine having passages for liquid fuel and for gaseous fuel extending circumferentially about an axis, the injector having a discharge region downstream of the injector, which comprises: means for forming two, annular, co-rotating streams of air and for discharging

A fuel injector for a gas turbine engine having passages for liquid fuel and for gaseous fuel extending circumferentially about an axis, the injector having a discharge region downstream of the injector, which comprises: means for forming two, annular, co-rotating streams of air and for discharging the streams into a discharge region and directing the streams of air toward each other; means for flowing liquid fuel and water through the injector between the two co-rotating streams prior to discharge from the injector into the discharge region and for discharging the liquid fuel and water into the discharge region between the two co-rotating streams in the discharge region; means for flowing gaseous fuel and steam through the injector circumferentially about the outermost stream of air and injecting the gaseous fuel and steam into the discharge region; wherein the disposition of the air passages relative to the gaseous fuel and steam passages avoids having a supply conduit for the gaseous fuel and steam interrupt the outermost air passage and wherein each of the means for flowing fuel is adapted to carry water in the same state as the fuel to efficiently mix water and fuel with rotating air streams.