Air-Oil Heat Exchanger

Patent metadata

Field	Value
Publication number	US-2020200088-A1
Application number	US-201916723715-A
Country	US
Kind code	A1
Filing date	Dec 20, 2019
Priority date	Dec 24, 2018
Publication date	Jun 25, 2020
Grant date	—

Abstract

A matrix for exchanging heat between a first fluid and a second fluid, in particular for an air-oil application in a turbine engine, includes an envelope defining a flow path of the first fluid and a network extending into the flow path and in which the second fluid flows. Along the axis defined by the curvature of the matrix, the dimensions of the envelope vary circumferentially (T(A)) and radially (R(A)). The matrix may be used with a heat exchanger.

First claim

We claim:

1 . A matrix for a heat exchanger, the matrix comprising:
an envelope with an inner surface spatially delimiting a flow path for a first fluid and an outer surface, the envelope being generally arcuate in shape, defining an axial direction which is the main direction of flow of the first fluid, a radial direction, and a circumferential direction, the outer surface defining an outer outline of the matrix, seen in a plane perpendicular to the main direction; and a network extending within the flow path and within which a second fluid flows; wherein in the axial direction, the outer outline varies radially and circumferentially.

2 . The matrix according to claim 1 , wherein the outer outline is-expanded radially and circumferentially in an upstream portion of the matrix.

3 . The matrix according to claim 1 , wherein the outer outline tapers radially and circumferentially in a downstream portion of the matrix.

4 . The matrix according to claim 1 , wherein the envelope has a thickness which varies axially, circumferentially, and radially.

5 . The matrix according to claim 1 , wherein the network subdivides the flow path into a plurality of corridors, each corridor having, in a plane perpendicular to the axial direction, a cross-section which varies axially.

6 . The matrix according to claim 5 , wherein the cross-sections of the corridors and the outer outline vary according to a common trend.

7 . The matrix according to claim 1 , wherein the envelope and the network are integrally made by additive manufacturing.

8 . The matrix according to claim 1 , wherein the network is an interweaving of tubing forming the corridors delimiting a homogeneous or heterogeneous plurality of regular or irregular geometrical shapes in the flow path.

9 . The matrix according to claim 1 , further comprising:
an inlet manifold and an outlet manifold for the second fluid, the manifolds being integral with the matrix, and the manifolds being both circumferentially arranged on the same side of the matrix.

10 . The matrix according to claim 9 , further comprising:
a bypass connecting the inlet manifold to the outlet manifold, the bypass being integral with the matrix.

11 . The matrix according to claim 10 , wherein the bypass allows the flow of the second fluid in a substantially axial direction.

12 . The matrix according to claim 1 , further comprising:
fastening flanges integral with the matrix.

13 . The matrix according to claim 10 , further comprising:
fastening flanges integral with the matrix; wherein the bypass, the manifolds, and at least one fastening flange are arranged circumferentially on the same side of the matrix.

14 . The matrix according to claim 1 , further comprising:
a protective grid upstream of the flow path, the protective grid being integral with the matrix.

15 . The matrix according to claim 1 , further comprising:
a braking chamber upstream of the network and an acceleration chamber downstream of the network, the braking chamber and the acceleration chamber being integral with the matrix.

16 . A matrix for a heat exchanger, the matrix comprising:
an envelope with an inner surface spatially delimiting a flow path for a first fluid, and an outer surface, the envelope being generally arcuate in shape, defining an axial direction which is the main direction of flow of the first fluid, a radial direction, and a circumferential direction, the outer surface defining an outer outline of the matrix, seen in a plane perpendicular to the main direction; and a network extending within the flow path and within which a second fluid flows; wherein the network subdivides the flow path into a plurality of corridors, each corridor having, in a plane perpendicular to the axial direction, a cross-section which varies axially; and wherein the cross-sections of the corridors and the outer outline vary according to a common trend.

17 . A matrix for a heat exchanger, the matrix comprising:
an envelope with an inner surface spatially delimiting a flow path for a first fluid, and an outer surface, the envelope being generally arcuate in shape, defining an axial direction which is the main direction of flow of the first fluid, and a radial direction and a circumferential direction, the outer surface defining an outer outline of the matrix, seen in a plane perpendicular to the main direction; a network extending within the flow path and within which a second fluid flows; an inlet manifold and an outlet manifold for the second fluid; and a bypass connecting the inlet manifold to the outlet manifold; wherein the bypass convey the second fluid in the axial direction.

Assignees

• Safran Aero Boosters Sa

Inventors

• Weicker David
• Vleugels Roel
• Fellin Nicolas

Classifications

• F28F7/02

  Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} · CPC title

• F28D1/0246

  heat-exchange elements having several adjacent conduits forming a whole, e.g. blocks · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F28D21/00 Primary

  Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00 · CPC title