Heat exchanger with improved flow at mitered corners

Patent metadata

Field	Value
Publication number	US-2016348980-A1
Application number	US-201514723612-A
Country	US
Kind code	A1
Filing date	May 28, 2015
Priority date	May 28, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A heat exchanger has a first flow path communicating fluid into a turning flow path at a first mitered interface. The turning flow path has a second mitered interface for communicating fluid from the turning flow path into a return flow path. The first flow path extends in a nominal direction toward the turning flow path. First flow passages within the first flow path and return flow passages in the return flow path are provided by walls having alternating sections which extend in opposed angular directions relative to nominal directions. Sizes of a portion of passages at the interfaces are different such that some passages are larger than other openings into other passages.

First claim

1 . A heat exchanger comprising:
a first flow path for communicating fluid into a turning flow path at a first mitered interface, said turning path having a second mitered interface for communicating fluid from said turning flow path into a return flow path; the return flow path extends in a nominal direction away from the turning flow path, said first flow path extends in a first nominal direction toward said turning flow path, first flow passages within said first flow path and return flow passages in said return flow path are provided by walls having alternating sections which extend in opposed angular directions relative to the nominal directions; turning flow passages extend through said turning flow path from said first and second mitered interfaces and sizes of a portion of said first flow passages and said turning flow passages at said first interface are different such that openings into one of said first and turning flow passages are larger than openings into the other of the first and turning flow passages; sizes of a portion of said return flow passages and said turning flow passages at said second interface are different such that openings into one of the return and turning flow passages are larger than openings into the other of said return and turning flow passages.

2 . The heat exchanger as set forth in claim 1 , wherein said turning flow passages are also formed by wall sections extending in opposed directions relative to a nominal flow direction through said turning flow path.

3 . The heat exchanger as set forth in claim 2 , wherein said larger openings are formed in said turning flow path at at least one of said first and second interfaces.

4 . The heat exchanger as set forth in claim 3 , wherein said larger openings are formed in said turning flow path at both of said first and second interfaces.

5 . The heat exchanger as set forth in claim 2 , wherein the larger openings are formed in at least one of said first flow path and said return flow path.

6 . The heat exchanger as set forth in claim 5 , wherein said larger openings are formed in both of said first flow path and said return flow path.

7 . The heat exchanger as set forth in claim 1 , wherein said turning flow passages extend parallel to a nominal flow direction through said turning flow path.

8 . The heat exchanger as set forth in claim 1 , wherein said larger openings are formed in said turning flow path at at least one of said first and second interfaces.

9 . The heat exchanger as set forth in claim 8 , wherein said larger openings are formed in said turning flow path at both of said first and second interfaces.

10 . The heat exchanger as set forth in claim 1 , wherein the larger openings are formed in at least one of said first flow path and said return flow path.

11 . The heat exchanger as set forth in claim 10 , wherein said larger openings are formed in both of said first flow path and said return flow path.

12 . A heat exchanger comprising:
a source of fluid communicating into a first flow path communicating fluid into a turning flow path at a first mitered interface, said turning path having a second mitered interface for communicating fluid from said turning flow path into a return flow path and communicating to a use for the fluid; the return flow path extends in a nominal direction away from the turning flow path, said first flow path extends in a first nominal direction toward said turning flow path, first flow passages within said first flow path and return flow passages in said return flow path are provided by walls having alternating sections which extend in opposed angular directions relative to the nominal directions such that the first flow passages and the return flow passages are herringbone-shaped; turning flow passages extend through said turning flow path from said first and second mitered interfaces and a size of a portion of said first flow passages and said turning flow passages at said first interface are different such that openings into one of said first and turning flow passages are larger than openings into the other of the first and turning flow passages; a size of a portion of said return flow passages and said turning flow passages at said second interface are different such that openings into one of the return and turning flow passages are larger than openings into the other of said return and turning flow passages.

13 . The heat exchanger as set forth in claim 12 , wherein said turning flow passages extend parallel to a nominal flow direction through said turning flow path.

14 . The heat exchanger as set forth in claim 13 , wherein said turning flow passages are also formed by wall sections extending in opposed directions relative to a nominal flow direction through said turning flow path.

15 . The heat exchanger as set forth in claim 12 , wherein said turning flow passages are also formed by wall sections extending in opposed directions relative to a nominal flow direction through said turning flow path.

16 . The heat exchanger as set forth in claim 12 , wherein said larger openings are formed in said turning flow path at at least one of said first and second interfaces.

17 . The heat exchanger as set forth in claim 16 , wherein said larger openings are formed in said turning flow path at both of said first and second interfaces.

18 . The heat exchanger as set forth in claim 12 , wherein the larger openings are formed in at least one of said first flow path and said return flow path.

19 . The heat exchanger as set forth in claim 12 , wherein said larger openings are formed in both of said first flow path and said return flow path.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Veilleux Jr Leo J
• Ribarov Lubomir A

Classifications

• F28D1/0383 Primary

  with U-flow or serpentine-flow inside the conduits · CPC title

• F28D2001/0266

  Particular core assemblies, e.g. having different orientations or having different geometric features · CPC title

• F28D1/035 Primary

  with U-flow or serpentine-flow inside the conduits (F28D1/0341 takes precedence) · CPC title

• F28F3/046

  the deformations being linear, e.g. corrugations · CPC title

• F28D9/0068

  with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones · CPC title