The invention relates to a heat exchanger comprising first fluid inlets, first fluid outlets, second fluid inlets and second fluid outlets. Each of the first fluid inlets, the first fluid outlets, the second fluid inlets and the second fluid outlets are arranged on four different sides of a heat exchanger core. A manifold covers one of the four different sides of the heat exchanger core, wherein a first sidewall of the manifold is arranged at an angle smaller than 90 degree to the one side of the heat exchanger core which is covered by the manifold. An edge of the heat exchanger core between the one side of the heat exchanger core which is covered by the manifold and a neighbouring side of the four different sides of the heat exchanger core forms a common weld line with a connecting edge of the first sidewall of the manifold. The invention also relates to a method for manufacturing a heat exchanger comprising a heat exchanger core and a manifold.

One embodiment of the present invention is a unique aircraft propulsion gas turbine engine. Another embodiment is a unique gas turbine engine. Another embodiment is a unique gas turbine engine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines with heat exchange systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

A heat exchanger includes a heat exchanger core, an intake tank, and a flow limiting portion. The heat exchanger core includes a stacked heat exchange portion, a distribution portion, and a collection portion. The stacked heat exchange portion defines first fluid flow paths through which a first fluid flows in a first direction, and second fluid flow paths through which a second fluid flows in a third direction. The distribution portion is configured to distribute the first fluid to the first fluid flow paths. The collection portion is configured to collect the first fluid from the first fluid flow paths. The flow limiting portion is configured to suppress an inflow of the second fluid from the intake tank into the distribution portion and the collection portion. The flow limiting portion and the intake tank are provided as a single component.

A liquid to refrigerant heat exchanger includes a coolant volume that is at least partially defined by a plastic housing and by a metal closure plate. The plastic housing is sealingly joined to the closure plate along an outer periphery of the closure plate. The metal closure plate can be part of a brazed assembly that defines a continuous refrigerant flow path through the heat exchanger between a refrigerant inlet port and a refrigerant outlet port.

A tank for a heat exchanger is disclosed. The tank may comprise: an axially extending body, comprising a first wall, a second wall, a third wall between the first and second walls, and a plurality of ribs, wherein the first, second, and third walls define a channel; a transition, comprising a first transition portion and a second transition portion each axially extending from respective distal ends of the first and second walls; and a foot, comprising a first foot portion and a second foot portion coupled to the first and second transition portions, respectively, the first and second foot portions extending axially and positioned outboard of the body by the transition, wherein the plurality of ribs extends radially outwardly from an outer surface of the body.

A heat exchanger manifold configured to receive or discharge a first fluid includes a primary fluid channel and a plurality of secondary fluid channels. The primary fluid channel includes a fluid port and a first branched region distal to the fluid port. The plurality of secondary fluid channels are fluidly connected to the primary fluid channel at the first branched region. Each of the plurality of secondary fluid channels includes a first end and a second end opposite the first end. Each of the plurality of secondary fluid channels extends radially from the first branched region at the first end and has an equal length from a center of the first branched region to the second end.

The invention relates to a heat exchanger comprising first fluid inlets, first fluid outlets, second fluid inlets and second fluid outlets. Each of the first fluid inlets, the first fluid outlets, the second fluid inlets and the second fluid outlets are arranged on four different sides of a heat exchanger core. A manifold covers one of the four different sides of the heat exchanger core, wherein a first sidewall of the manifold is arranged at an angle smaller than 90 degree to the one side of the heat exchanger core which is covered by the manifold. An edge of the heat exchanger core between the one side of the heat exchanger core which is covered by the manifold and a neighbouring side of the four different sides of the heat exchanger core forms a common weld line with a connecting edge of the first sidewall of the manifold. The invention also relates to a method for manufacturing a heat exchanger comprising a heat exchanger core and a manifold.

A heat exchanger component comprises a core portion with alternating first and second heat exchanging channels. A first ducting portion comprises first ducting channels for transfer a first fluid between a first fluid inlet/outlet and the first heat exchanging channels of the core portion, and second ducting channels for transfer of second fluid between a second fluid inlet/outlet and the second heat exchanging channels of the core portion. The first ducting channels direct the first fluid around the turn of at least 45 degrees and the second ducting channels direct the second fluid around a turn of at least 90 degrees. The first and second ducting channels are interleaved.

A tube for a heat exchanger includes a tube outer body enclosing a tube inner volume, and a corrugated insert received within the tube inner volume. The tube outer body has a pair of broad planar walls joined by arcuate end walls. The corrugated insert defines flow channels through the tube, with opening in flanks of the insert allowing for flow communication between adjacent flow channels. Bypass channels adjacent the arcuate end walls are fluidly isolated from the adjacent flow channels by the absence of such openings in the end flanks. Flow through the bypass channels is obstructed by flow blocks at one or both ends of the bypass channels.

A heat exchanger for a gas turbine engine includes a heat exchanger body having a first surface and a second surface oriented at least partially at an oblique angle relative to the first surface. The heat exchanger body defines a plenum extending between the first and second surfaces. Furthermore, the heat exchanger body defines a fluid passage extending through the second surface such that the fluid passage is in fluid communication with the plenum. The fluid passage, in turn, includes first and second portions. The first portion intersects the plenum at an intersection and defines a line of projection extending normal to the second surface. The second portion defines a line of projection extending normal to the first surface. The fluid passage further includes a curved portion extending from the first portion to the second portion.