Patent ID: 8033114
Filing Date: 2011-10-11
Classification: F23C,F23D,F23R,Y02T

Abstract:
1. A multimode fuel injector for combustion chambers, comprising: at least two coaxial fuel atomization system, one of the at least two coaxial fuel atomization systems is a peripheral atomization system, wherein the peripheral atomization system comprises a distributor with an annular distribution chamber communicating with a plurality of fuel ejection orifices distributed at regular intervals along a circumference of the distributor, and an annular air eddy deflector, radially installed on the outside relative to said plurality of fuel ejection orifices, wherein said deflector comprises vanes defining air ejection channels spaced at regular intervals along a circumference of the deflector and directing air towards fuel jets coming from said fuel ejection orifices, for each fuel ejection axis defined by the fuel ejection orifice, at least a radially most internal part of a corresponding air ejection channel has a median which substantially intersects the fuel ejection axis, and wherein said annular deflector comprises two internally truncated coaxial walls, upstream and downstream respectively, with their conicity directed towards the downstream, and said annular distribution chamber comprises a truncated wall in which said orifices are provided and the exterior face of said truncated wall having a frusto-conical surface parallel to or merging with an interior face of said upstream wall of said annular deflector and another atomization system comprising an axial fuel ejection nozzle is provided with another air eddy deflector arranged around this nozzle and two axially assembled annular guide defining counter-rotational swirlers.