Heat exchanger with integral anti-icing

Patent metadata

Field	Value
Publication number	US-10451360-B2
Application number	US-201615332574-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Oct 24, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A heat exchanger includes a plurality of first and second fluid passages. The first fluid passages are defined by a pair of opposing first fluid passage walls and a plurality of first fluid diverters disposed between the first fluid passages walls. The second fluid passages are defined by a pair of opposing second fluid passage walls and a plurality of second fluid diverters disposed between the second fluid passage walls. The second fluid diverters include a body portion and a leading edge portion. The first fluid passage walls form a first fluid leading edge that extends upstream of the leading edge portion of the second fluid diverters. The second fluid passages extend in a direction perpendicular to the direction of the first fluid passages.

First claim

The invention claimed is:

1. A heat exchanger comprising:
a plurality of first fluid passages, the plurality of first fluid passages defined by:
a pair of opposing first fluid passage walls each having a first wall thickness; and
a plurality of first fluid diverters disposed between the first fluid passage walls;
wherein each of the plurality of first fluid passages extends in a first direction and is configured to receive a first fluid flow in the first direction; and

a plurality of second fluid passages, the plurality of second fluid passages defined by:
a pair of opposing second fluid passage walls; and
a plurality of second fluid diverters disposed between the second fluid passage walls;
wherein each of the plurality of second fluid diverters comprises a body portion and a leading edge portion; and
wherein each of the plurality of second fluid passages extends in a second direction perpendicular to the first direction and is configured to receive a second fluid flow in the second direction;

wherein one of the plurality of first fluid passages is an upstream first fluid passage defined by the first fluid passage walls which meet to form a first fluid leading edge located upstream, relative to the second fluid flow, of the leading edge portions of the second fluid diverters,
wherein another of the plurality of first fluid passages abuts the upstream first fluid passage on a side opposite the first fluid leading edge,
wherein the first fluid leading edge has a leading edge thickness greater than the first wall thickness, and
wherein the first fluid leading edge is situated upstream of the leading edge portions of the second fluid diverters a distance equivalent to at least twice a width of an individual one of the plurality of second fluid passages.

2. The heat exchanger of claim 1 , wherein the second fluid diverters are selected from the group consisting of fins, pins, and combinations thereof.

3. The heat exchanger of claim 1 , wherein the body portion of the second fluid diverter has a first thickness, and the leading edge portion of the second fluid diverter has a second thickness.

4. The heat exchanger of claim 3 , wherein the second thickness is between 110% to 500% of the first thickness.

5. The heat exchanger of claim 1 , wherein the first fluid passage leading edge has an inner surface, and wherein the inner surface comprises fins.

6. The heat exchanger of claim 1 , wherein the plurality of first fluid passage walls and diverters, and the plurality of second fluid passage walls and diverters are formed from aluminum.

7. The heat exchanger of claim 1 , wherein the plurality of first fluid passage walls and diverters, and the plurality of second fluid passage walls and diverters are formed from a material selected from the group consisting of steel, nickel alloys, titanium, and combinations thereof.

8. The heat exchanger of claim 1 , wherein the plurality of first fluid passage walls and diverters, and the plurality of second fluid passage walls and diverters are formed from a non-metal material.

9. A method of making a heat exchanger comprising:
forming a plurality of opposing first fluid passage walls each having a first wall thickness, and a plurality of first fluid diverters disposed between the first fluid passage walls;
wherein the plurality of first fluid passage walls and the plurality of first fluid diverters define a plurality of first fluid passages extending in a first direction and configured to receive a first fluid flow in the first direction; and

forming a plurality of opposing second fluid passage walls, and a plurality of second fluid diverters disposed between the second fluid passage walls;
wherein the plurality of second fluid passage walls and the plurality of second fluid diverters define a plurality of second fluid passages extending in a second direction perpendicular to the first direction and configured to receive a second fluid flow in the second direction; and
wherein each of the plurality of second fluid diverters comprises a body portion and a leading edge portion;

wherein one of the plurality of first fluid passages is an upstream first fluid passage defined by the first fluid passage walls which meet to form a first fluid leading edge located upstream, relative to the second fluid flow, of the leading edge portions of the second fluid diverters,
wherein another of the plurality of first fluid passages abuts the upstream first fluid passage on a side opposite the first fluid leading edge,
wherein the first fluid leading edge has a leading edge thickness greater than the first wall thickness, and
wherein the first fluid leading edge is situated upstream of the leading edge portions of the second fluid diverters a distance equivalent to twice a width of an individual one of the plurality of second fluid passages.

10. The method of claim 9 , further comprising: forming the leading edge portion of the second fluid diverter such that is has a thickness between 110% to 500% relative to a thickness of the body portion of the second fluid diverter.

11. The method of claim 9 , further comprising: forming fins on an inner surface of the first fluid passage leading edge.

12. The method of claim 9 , further comprising: forming the heat exchanger by additive manufacturing.

13. The method of claim 9 , further comprising: forming the heat exchanger from aluminum.

14. The method of claim 9 , further comprising: forming the heat exchanger from a material selected from the group consisting of steel, nickel alloys, titanium, and combinations thereof.

15. The method of claim 9 and further comprising: forming the heat exchanger from a non-metal material.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Zager Michael
• Doe Michael

Classifications

• F28F2225/06

  for fins · CPC title

• F28F1/126

  consisting of zig-zag shaped fins (F28F1/105 takes precedence) · CPC title

• F28F1/022 Primary

  with multiple channels · CPC title

• F28F2225/04

  for conduits · CPC title

• F28F21/087

  from nickel or nickel alloys · CPC title