Aircraft heat exchanger
A heat exchanger plate provides heat transfer between a first flow along a first flowpath and a second flow along a second flowpath. The heat exchanger plate has a substrate having: a first face and a second face opposite the first face; a leading edge along the second flowpath and a trailing edge along the second flowpath; a proximal portion having a plurality of inlet ports along the first flowpath and a plurality of outlet ports along the first flowpath; and a plurality of passageways along the first flowpath. Each passageway extends between a respective associated said inlet port of the plate and a respective associated said outlet port of the plate.
1. A heat exchanger for providing heat transfer between a first flow along a first flowpath and a second flow along a second flowpath, the heat exchanger comprising
at least one plate bank comprising a plurality of heat exchanger plates for providing heat transfer between the first flow along the first flowpath and the second flow along the second flowpath, each of the plurality of heat exchanger plates comprising a substrate having:
a first face and a second face opposite the first face;
a leading edge along the second flowpath and a trailing edge along the second flowpath;
a proximal portion having a plurality of inlet ports along the first flowpath and a plurality of outlet ports along the first flowpath, wherein:
the inlet ports are closer to the first face than are the outlet ports; and
the outlet ports are closer to the second face than are the inlet ports; and
a plurality of passageways along the first flowpath, each passageway extending between a respective associated said inlet port of the plate and a respective associated said outlet port of the plate; and
a manifold structure comprising:
an inlet manifold having at least one inlet port and at least one outlet port; and
an outlet manifold having at least one outlet port and at least one inlet port, the first flowpath passing from the at least one inlet port of the inlet manifold, through the at least one passageway of each of the plurality of heat exchanger plates, and through the at least one outlet port of the outlet manifold,
wherein:
the inlet manifold encloses an inlet plenum having a plurality of legs;
the outlet manifold encloses an outlet plenum having a plurality of legs interdigitated with the legs of the inlet plenum;
one of the legs of the inlet plenum feeds inlet ports of exactly one of the plates;
a remainder of the legs of the inlet plenum feed inlet ports of exactly two of the plates;
one of the legs of the outlet plenum receives flow from exactly one of the plates; and
a remainder of the legs of the outlet plenum receive flow from exactly two of the plates.
2. The heat exchanger of claim 1 wherein for each plate of the plurality of heat exchanger plates:
the first face and the second face extend between the leading edge and the trailing edge.
3. The heat exchanger of claim 1 wherein for each plate of the plurality of heat exchanger plates:
the plate has a distal edge; and
each passageway has at least one turn adjacent the distal edge between an upstream leg and a downstream leg along the first flowpath, the upstream leg and downstream leg being spaced from each other between the leading edge and the trailing edge.
4. The heat exchanger of claim 3 wherein for each plate of the plurality of heat exchanger plates:
each passageway has a plurality of turns adjacent the distal edge; and
each passageway has at least one turn adjacent the proximal portion.
5. The heat exchanger of claim 3 wherein for each plate of the plurality of heat exchanger plates:
the passageways are arrayed between the leading edge and the trailing edge.
6. The heat exchanger of claim 3 wherein for each plate of the plurality of heat exchanger plates:
for each said passageway, the inlet port is closer to the trailing edge than is the associated outlet port.
7. The heat exchanger of claim 3 wherein for each plate of the plurality of heat exchanger plates:
the proximal portion is a proximal edge.
8. The heat exchanger of claim 1 wherein for each plate of the plurality of heat exchanger plates:
the plate has two to fifty of said passageways.
9. The heat exchanger of claim 1 wherein for each plate of the plurality of heat exchanger plates:
said passageways are in a casting.
10. The heat exchanger of claim 1 wherein each plate of the plurality of heat exchanger plate further comprises a plurality of fin structures along the first face, each fin structure comprising:
a base secured to the first face; and
a first fin and a second fin extending from respective first and second edges of the base.
11. A gas turbine engine including the heat exchanger of claim 1 wherein:
the first flow is a bleed flow and the second flow is a bypass flow.
12. A heat exchanger for providing heat transfer between a first flow along a first flowpath and a second flow along a second flowpath, the heat exchanger comprising:
at least one plate bank comprising a plurality of heat exchanger plates for providing heat transfer between the first flow along the first flowpath and the second flow along the second flowpath, each of the plurality of heat exchanger plates comprising a substrate having:
a first face and a second face opposite the first face;
a leading edge along the second flowpath and a trailing edge along the second flowpath;
a proximal portion having a plurality of inlet ports along the first flowpath and a plurality of outlet ports along the first flowpath, wherein:
the inlet ports are closer to the first face than are the outlet ports; and
the outlet ports are closer to the second face than are the inlet ports; and
a plurality of passageways along the first flowpath, each passageway extending between a respective associated said inlet port of the plate and a respective associated said outlet port of the plate; and
a manifold structure comprising:
an inlet manifold having at least one inlet port and at least one outlet port; and
an outlet manifold having at least one outlet port and at least one inlet port, the first flowpath passing from the at least one inlet port of the inlet manifold, through the at least one passageway of each of the plurality of heat exchanger plates, and through the at least one outlet port of the outlet manifold,
wherein:
the inlet manifold encloses an inlet plenum having a plurality of legs;
the outlet manifold encloses an outlet plenum having a plurality of legs interdigitated with the legs of the inlet plenum; and
for each said passageway, the heat exchanger plate inlet port is closer to the trailing edge than is the associated heat exchanger plate outlet port.
13. The heat exchanger of claim 12 wherein:
the plurality of plates are a first group of plates and a second group of plates, the plates of the second group of plates alternating with the plates of the first group of plates.
14. The heat exchanger of claim 13 wherein:
the plates of the second group of plates are mirror images of the plates of the first group of plates.
15. The heat exchanger of claim 12 wherein for each plate of the plurality of heat exchanger plates:
each passageway has a plurality of turns adjacent the distal edge; and
each passageway has at least one turn adjacent the proximal portion.
16. The heat exchanger of claim 12 wherein:
the manifold structure is arcuate having a convex first face and a concave second face; and
the at least one plate bank is mounted along the concave second face.
17. The heat exchanger of claim 12 wherein for each plate of the plurality of heat exchanger plates:
the passageways are arrayed between the leading edge and the trailing edge.
18. The heat exchanger of claim 12 wherein for each plate of the plurality of heat exchanger plates:
the plate has two to fifty of said passageways.
19. The heat exchanger of claim 12 wherein for each plate of the plurality of heat exchanger plates:
said passageways are in a casting.
20. The heat exchanger of claim 12 wherein for each plate of the plurality of heat exchanger plates:
the plate has a distal edge;
each passageway has at least one turn adjacent the distal edge between an upstream leg and a downstream leg along the first flowpath, the upstream leg and downstream leg being spaced from each other between the leading edge and the trailing edge; and
the proximal portion is a proximal edge.
21. The heat exchanger of claim 12 wherein:
each plate has a distal edge;
for each plate, each passageway has at least one turn adjacent the distal edge; and
for each plate, the passageways are arrayed between the leading edge and the trailing edge.
22. A gas turbine engine including the heat exchanger of claim 12 wherein:
the first flow is a bleed flow and the second flow is a bypass flow.