Heat exchanger with integral bleed air ejector

Patent metadata

Field	Value
Publication number	US-10203159-B2
Application number	US-201615332538-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Oct 24, 2016
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

A heat exchanger assembly includes a plurality of first and second fluid passages 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. An ejector is integrated into the heat exchanger assembly. The ejector includes: an integral ejector passage, wherein the integral ejector passage is a first fluid passage; a primary inlet configured to receive a hot fluid; an outlet nozzle configured to eject the hot fluid; a secondary inlet configured to receive a cold fluid, wherein the secondary inlet is in fluid communication with a second fluid passage; and a mixing section in fluid communication with the outlet nozzle and the secondary inlet.

First claim

The invention claimed is:

1. A heat exchanger assembly comprising:
a plurality of first fluid passages, the plurality of first fluid passages defined by:
a pair of opposing first fluid passage walls; 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 from a first fluid inlet end to a first fluid outlet end;

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; and

an ejector integrated into the heat exchanger assembly, the ejector comprising:
an integral ejector passage, wherein the integral ejector passage is a first fluid passage extending in the first direction from the first fluid inlet end to the first fluid outlet end, and wherein the integral ejector passage comprises:
a primary inlet located at the first fluid inlet end and configured to receive a hot fluid; and
an outlet nozzle configured to eject the hot fluid;
a secondary inlet configured to receive a cold fluid, wherein the secondary inlet is in fluid communication with a second fluid passage; and
a mixing section in fluid communication with the outlet nozzle of the integral ejector passage and the secondary inlet.

2. The assembly of claim 1 , further comprising: a manifold configured to introduce the hot fluid into the primary inlet.

3. The assembly of claim 1 , further comprising: a valve for selectively controlling the introduction of the hot fluid into the manifold.

4. The assembly of claim 1 , wherein the integral ejector passage is a downstream first fluid passage.

5. The assembly of claim 1 , wherein an inlet passage joins the secondary inlet to the second fluid passage.

6. The assembly of claim 5 , wherein the secondary inlet passage comprises an inner wall and an outer wall, and wherein the inner wall and outer wall are joined by a connector.

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

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

9. A method of making a heat exchanger assembly comprising:
forming a plurality of opposing first fluid passage walls 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, each of the plurality of first fluid passages extending in a first direction from a first fluid inlet end to a first fluid outlet end;
forming a pair 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;
integrating an ejector into the heat exchanger assembly, the ejector comprising:
an integral ejector passage extending in the first direction from the first fluid inlet end to the first fluid outlet end, wherein the integral ejector passage is a first fluid passage, and wherein the integral ejector passage comprises:
a primary inlet located at the first fluid inlet end and configured to receive a hot fluid; and
an outlet nozzle configured to eject the hot fluid;
a secondary inlet configured to receive a cold fluid, wherein the secondary inlet is in fluid communication with a second fluid passage; and
a mixing section in fluid communication with the outlet nozzle of the integral ejector passage and the secondary inlet.

10. The method of claim 9 , further comprising: forming an inlet passage having an inner wall and an outer wall.

11. The method of claim 10 , further comprising: connecting the inner wall to the outer wall with a connector.

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

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

Assignees

• Hamilton Sundstrand Corp

Inventors

• Zager Michael
• Perez Roberto J
• Doe Michael

Classifications

• F04F5/14

  the inducing fluid being elastic fluid · CPC title

• B60K11/04

  Arrangement or mounting of radiators, radiator shutters, or radiator blinds · CPC title

• F28F27/02

  for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) · CPC title

• F04F5/462

  with provisions for cooling the fluid · CPC title

• F02C7/12

  Cooling of plants (of component parts, see the relevant subclasses, e.g. F01D; cooling of engines in general F01P) · CPC title