US 12,110,840 B2
Turbine engine separate flow mixer with lobes
Cyrille Telman, Moissy-Cramayel (FR); Pierre Vincent, Moissy-Cramayel (FR); Olivier Arnaud Fabien Lambert, Moissy-Cramayel (FR); and Simon José Pierre Amoedo, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/608,292
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Apr. 3, 2020, PCT No. PCT/EP2020/059584
§ 371(c)(1), (2) Date Nov. 2, 2021,
PCT Pub. No. WO2020/224890, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 1904664 (FR), filed on May 3, 2019.
Prior Publication US 2022/0213848 A1, Jul. 7, 2022
Int. Cl. F02K 1/38 (2006.01); F02K 1/48 (2006.01)
CPC F02K 1/386 (2013.01) [F02K 1/48 (2013.01); F05D 2250/184 (2013.01); F05D 2250/611 (2013.01); F05D 2300/50212 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A turbine engine separate flow mixer centered on a longitudinal axis, comprising an exhaust housing, a shroud directly connected to the exhaust housing and intended to mix flows originating in a turbine engine, wherein said shroud comprises a metal sheet formed by a succession of first longitudinal strips and second longitudinal strips distributed circumferentially around the longitudinal axis of the turbine engine separate flow mixer, the shroud having a first shape when at rest or in a cold configuration and a second shape different from the first shape when operating or in a hot configuration, and the first longitudinal strips and second longitudinal strips being configured to form the shroud when at rest and grooves in the shroud when operating, the grooves being defined by an alternation of internal lobes and of external lobes the first longitudinal strips and the second longitudinal strips having different thermal dilations when the shroud is operating and, wherein the exhaust housing comprises clevises protruding radially outward from the exhaust housing to fasten the exhaust housing to a pylon, an annular hub centered on the longitudinal axis, and coaxial with an external shroud of the exhaust housing, and wherein a plurality of arms connect the annular hub to the external shroud of the exhaust housing, wherein the annular hub is fully enclosed by the exhaust housing and is upstream of the shroud.