US 11,988,387 B2
Annular combustion chamber for an aircraft turbomachine
Haris Musaefendic, Moissy-Cramayel (FR); Romain Nicolas Lunel, Moissy-Cramayel (FR); and Jean-François Cabre, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/014,326
Filed by Safran Aircraft Engines, Paris (FR)
PCT Filed Jul. 2, 2021, PCT No. PCT/FR2021/051209
§ 371(c)(1), (2) Date Jan. 3, 2023,
PCT Pub. No. WO2022/008820, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 2007328 (FR), filed on Jul. 10, 2020.
Prior Publication US 2023/0250962 A1, Aug. 10, 2023
Int. Cl. F23R 3/50 (2006.01); F23R 3/10 (2006.01)
CPC F23R 3/50 (2013.01) [F23R 3/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An annular combustion chamber for an aircraft turbomachine, the chamber comprising two coaxial annular walls, respectively, an internal and an external, which are connected upstream by an annular bottom wall of the chamber, an injection device passing through an axis and comprising an air injection system and a frustoconical bowl which is flared downstream and comprising air passage orifices, the chamber further comprising an annular deflector placed downstream of the annular bottom wall, substantially parallel to the latter,
wherein the air injection system, the annular bottom wall, the deflector and the bowl are integrally formed,
the deflector comprising an annular portion substantially parallel to the annular bottom wall and separated from the annular bottom wall by a first space, the annular portion comprising an internal end with respect to the axis connected to the bowl and to the annular bottom wall,
the bowl comprising a first frustoconical wall and a second frustoconical wall substantially parallel and separated from each other by a second space, the annular bottom wall comprising [a] first air passage bores [in] opening into said first space, the first frustoconical wall of the bowl comprising [a] second air passage bores [in] opening into said second space, the air passage orifices of the bowl extending through the first and second frustoconical walls until they open into the chamber, the air passage orifices formed by walls that extend between the first and second frustoconical walls, [said] outlets of the air passage orifices of the bowl being located at junctions between a wall of the annular portion of the deflector and the second frustoconical wall of the bowl.