Heat exchanger

Patent metadata

Field	Value
Publication number	US-2016363379-A1
Application number	US-201414770642-A
Country	US
Kind code	A1
Filing date	Feb 17, 2014
Priority date	Feb 28, 2013
Publication date	Dec 15, 2016
Grant date	—

Abstract

The invention relates to a heat exchanger, preferably for motor vehicles, comprising a heat exchanger body ( 11 ), a first fluid channel ( 18 ), which is flowed through by a first fluid ( 12 ), and a second fluid channel ( 36 ), which is flowed through by a second fluid ( 14 ), wherein one of the fluids, either the first fluid ( 12 ) or the second fluid ( 14 ) is warmer than the other of the fluids, the first fluid ( 12 ) or the second fluid ( 14 ), wherein, after entering a heat exchanging region, a heat transfer ( 30 ) from the warmer fluid ( 14 ) to the colder fluid ( 12 ) takes place in the heat exchanging region, wherein the first channel ( 18 ) and the second fluid channel ( 36 ) have in the heat exchanging region at least two shared co-current regions ( 25 ) and a shared counter-current region ( 27 ) arranged between the co-current regions ( 25 ), or have at least two shared counter-current regions ( 27 ) and a shared co-current region ( 25, 125, 225 ) arranged between the counter-current regions ( 27 ).

First claim

1 . A heat exchanger, preferably for motor vehicles, said heat exchanger comprising:
a heat exchanger body a first fluid duct through which a first fluid can flow, and; a second fluid duct through which a second fluid can flow, wherein one of the first fluid and the second fluid is a relatively warm fluid and warmer than the other of the first fluid and the second fluid, which is a relatively cool fluid, wherein, during use of the heat exchanger with the first fluid and the second fluid, after said fluids enter a heat exchange region, heat transport from the relatively warm fluid to the relatively cool fluid takes place in the heat exchange region, and wherein the first fluid duct and the second fluid duct have, in the heat exchange region, at least two common codirectional-flow regions and one common counterdirectional-flow region arranged between the codirectional-flow regions, or at least two common counterdirectional-flow regions and one common codirectional-flow region arranged between the counterdirectional-flow regions.

2 . The heat exchanger as claimed in claim 1 , wherein a first of the at least two codirectional-flow regions, the counterdirectional-flow region and a second of the at least two codirectional-flow regions are fluidically connected in the stated sequence, such that the first fluid can flow through said regions in series.

3 . The heat exchanger as claimed in claim 1 , wherein a first of the at least two counterdirectional-flow regions, the codirectional-flow region and a second of the two counterdirectional-flow regions are fluidically connected in the stated sequence, such that the first fluid can flow through said regions in succession.

4 . The heat exchanger as claimed in claim 1 , wherein the counterdirectional-flow regions and the codirectional-flow regions are arranged between a base region and a top region.

5 . The heat exchanger as claimed in claim 4 , wherein at least one changeover region between a counterdirectional-flow region and a codirectional-flow region are arranged in the base region and/or in the top region.

6 . The heat exchanger as claimed in claim 4 , wherein an inlet and an outlet for the first fluid are arranged together in the base region or in the top region.

7 . The heat exchanger as claimed in claim 4 , wherein an inlet and an outlet for the second fluid are arranged together in the base region or in the top region.

8 . The heat exchanger as claimed in claim 1 , wherein the first fluid duct has at least one codirectional-flow duct section and at least one counterdirectional-flow duct section, wherein the codirectional-flow duct section and the counterdirectional-flow duct section are fluidically connected.

9 . The heat exchanger as claimed in claim 8 , wherein a flow partition is arranged between adjacent codirectional-flow duct sections and counterdirectional-flow duct sections.

10 . The heat exchanger as claimed in claim 9 , wherein the second fluid duct is arranged at least partially in the flow partition.

11 . The heat exchanger as claimed in claim 8 , wherein the heat exchanger body has a fluid partition arranged between the first fluid duct and the second fluid duct, wherein the fluid partition has a cylindrical basic shape, and wherein the flow partition forms a part of the fluid partition.

12 . The heat exchanger as claimed in claim 11 , wherein the flow partition is an outwardly pointing part of the fluid partition.

13 . The heat exchanger as claimed in claim 1 , wherein the heat exchanger body, in particular the fluid partition, has a constant wall thickness, in particular a constant wall thickness in the heat exchange region.

14 . The heat exchanger as claimed in claim 1 , wherein overflow edges are arranged in the first fluid duct such that swirl is imparted to the first fluid.

15 . The heat exchanger as claimed in claim 15 , wherein the overflow edges are arranged in a changeover region between the codirectional-flow region and the counterdirectional-flow region, such that swirl is imparted to the first fluid in the changeover region.

Assignees

• Webasto SE

Inventors

• Strecker Uwe
• llchenko Volodymyr
• Appel Klaus

Classifications

• F28D7/103

  consisting of more than two coaxial conduits or modules of more than two coaxial conduits · CPC title

• F28D7/12 Primary

  the surrounding tube being closed at one end, e.g. return type (F28D7/14 takes precedence) · CPC title

• F28D2021/008

  for vehicles · CPC title

• F28F13/06

  by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} · CPC title

• F28F2250/102

  with change of flow direction · CPC title