US 12,460,558 B2
Heat exchanger having a mixing chamber and protrusions
Jason Fish, Oakville (CA); and Gabriel Naccache, Longueuil (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Apr. 29, 2024, as Appl. No. 18/649,339.
Prior Publication US 2025/0334057 A1, Oct. 30, 2025
Int. Cl. F28F 13/12 (2006.01); F01D 25/12 (2006.01)
CPC F01D 25/12 (2013.01) [F28F 13/12 (2013.01); F05D 2220/323 (2013.01); F05D 2260/213 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for an aircraft engine, comprising:
an aircraft component; and
a heat exchanger for exchanging heat with a fluid flowing through the aircraft component, the heat exchanger having:
a housing defining a first inlet, a first outlet, a second inlet, and a second outlet;
first conduits within the housing, the first conduits fluidly connecting the first inlet to the first outlet;
one or more second conduit within the housing, the one or more second conduits fluidly connecting the second inlet to the second outlet, the one or more second conduit in heat exchange relationship with the first conduits;
a mixing chamber intersecting two or more of the first conduits and separating the first conduits into upstream sections and downstream sections relative to a flow from the first inlet to the first outlet, the mixing chamber having a peripheral wall extending around a mixing volume and a central axis; and
protrusions extending from the peripheral wall into the mixing volume, the protrusions extending around the central axis and across a direction of the flow through the mixing chamber, the protrusions extending along a radial direction relative to the central axis from bases at the peripheral wall to tips without intersecting the central axis, the tips of the protrusions being radially offset from the central axis.