US 11,698,188 B2
Flat-jet fuel injector for an aircraft turbine engine
Denis Chanteloup, Moissy-Cramayel (FR); Thomas Lederlin, Moissy-Cramayel (FR); Guillaume Mauries, Moissy-Cramayel (FR); and Simon Meilleurat, Moissy-Cramayel (FR)
Assigned to Safran Helicopter Engines, Bordes (FR)
Appl. No. 16/626,243
Filed by SAFRAN HELICOPTER ENGINES, Bordes (FR)
PCT Filed Jun. 18, 2018, PCT No. PCT/EP2018/066043
§ 371(c)(1), (2) Date Dec. 23, 2019,
PCT Pub. No. WO2019/001996, PCT Pub. Date Jan. 3, 2019.
Claims priority of application No. 1755888 (FR), filed on Jun. 27, 2017.
Prior Publication US 2020/0217500 A1, Jul. 9, 2020
Int. Cl. F23D 11/00 (2006.01); F23D 11/38 (2006.01); B05B 7/02 (2006.01); F23R 3/28 (2006.01)
CPC F23D 11/38 (2013.01) [B05B 7/025 (2013.01); F23R 3/28 (2013.01); F23R 2900/00004 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A flat-jet fuel injector for an aircraft turbine engine, comprising:
a body with a generally elongated shape having an elongation axis A, said body comprising a first longitudinal end for fuel supply and a second longitudinal end which ejects a flat-jet of fuel outside the flat-jet fuel injector,
said second longitudinal end comprising a main pipe, the main pipe having a generally elongated shape with an elongation axis B substantially perpendicular to said elongation axis A, said main pipe having its two longitudinal ends which are connected directly and respectively to longitudinal ends of two secondary pipes with a generally elongated shape having an elongation axis C at least substantially parallel to said elongation axis A, and which are configured for forming respectively two separate fuel flow inlets intended to meet substantially in a middle of said main pipe which comprises at least one slot which ejects said flat-jet of fuel outside the flat-jet fuel injector,
wherein at least one of said main and secondary pipes defines a flow cross-section area, having at least one geometric parameter such as shape or dimension, which varies along said at least one pipe of said main and secondary pipes and/or is different from the same geometric parameter defined by a flow cross-section area of another of said at least one pipe of said main and secondary pipes,
wherein said main pipe comprises an inner wall that is substantially parallel to the elongation axis B, the inner wall dividing the flow cross-section area of the main pipe into two parts,
wherein said main pipe has a central portion in which said at least one slot is located, the inner wall being open in said central portion.