Heat exchanger

Patent metadata

Field	Value
Publication number	US-10295276-B2
Application number	US-201414564457-A
Country	US
Kind code	B2
Filing date	Dec 9, 2014
Priority date	Dec 9, 2013
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A heat exchanger having a tube-fin block that is closed by two collecting tanks, whereby the ends of the tubes engage in a bottom of the particular collecting tank and the bottom is closed with a cover. A partition wall secured to the cover is formed transverse to a longitudinal extension of the collecting tank and divides an interior space of the collecting tank into two subchambers. The heat exchanger, which prevents great structural changes for compensating temperature-induced stresses, a first stress decoupling device is formed in the bottom and/or a second stress decoupling device in the area of the partition wall in the cover of at least one collecting tank.

First claim

What is claimed is:

1. A heat exchanger comprising:
a tube-fin block that is fluidically connected to two collecting tanks;
tubes having ends that engage in a bottom of each of the collecting tanks, the bottom of each of the collecting tanks being closed with a cover;
a partition wall secured to the cover of at least one of the collecting tanks, the partition wall being formed transverse to a longitudinal extension of the at least one of the collecting tanks and dividing an interior space of the at least one of the collecting tanks into two subchambers; and
first stress decoupling devices formed in the bottom of the at least one of the collecting tanks in an area of the partition wall and a second stress decoupling device formed in the area of the partition wall in the cover of the at least one of the collecting tanks,
wherein, in each of the first stress decoupling devices, a slot that runs in a longitudinal direction of the bottom of the at least one of the collecting tanks is provided, wherein the slot is expanded by a further slot that runs in the transverse direction of the bottom of the at least one of the collecting tanks,
wherein the slot and the further slot are each formed as through-holes that extend entirely through the bottom of the at least one of the collecting tanks,
wherein the second stress decoupling device is provided in an upper surface of the cover of the at least one of the collecting tanks and is formed as a corrugation,
wherein a circumferential border of the cover of the at least one of the collecting tanks, provided at side surfaces of the cover, is formed as a corrugated flange, and
wherein a first one of the two subchambers has a higher temperature than a second one of the two subchambers, and wherein by being formed in the area of the partition wall, the first stress decoupling devices are only located in an area of the bottom of the at least one of the collecting tanks between a supply connector and an outlet connector, such that a step offset is provided between the two subchambers to relieve stresses transmitted via the bottom to the tubes.

2. The heat exchanger according to claim 1 , wherein the corrugation is formed V- or U-shaped.

3. The heat exchanger according to claim 1 , wherein the cover of the at least one of the collecting tanks is lowered in the area of the partition wall in a direction of the bottom of the at least one of the collecting tanks, and wherein the partition wall is formed between the corrugation and the circumferential border of the cover of the at least one of the collecting tanks.

4. The heat exchanger according to claim 3 , wherein a height of the partition wall resting on the bottom of the at least one of the collecting tanks corresponds to <50% of a total height of the cover of the at least one of the collecting tanks.

5. The heat exchanger according to claim 3 , wherein a height of the partition wall corresponds to between 1 and 100% of a height of the circumferential border of the cover of the at least one of the collecting tanks.

6. The heat exchanger according to claim 1 , wherein a seal or a sealing frame is arranged between the partition wall and the bottom of the at least one of the collecting tanks.

7. The heat exchanger according to claim 1 , wherein the first stress decoupling devices of the bottom of the at least one of the collecting tanks are formed as an attenuation elasticity.

8. The heat exchanger according to claim 1 , wherein the cover of the at least one of the collecting tanks has one medium inlet connector and two medium outlet connectors, wherein the medium inlet connector is associated with the first one of the two subchambers formed by the partition wall and the two medium outlet connectors are associated with the second one of the two subchambers.

Assignees

• Mahle Int Gmbh

Inventors

• Ghiani Franco
• Strese Thomas
• Rouhana Hicham
• Krisa Roland
• Nguyen Chi-Duc
• Helms Werner
• Heine Reinhard

Classifications

• F28F1/10 Primary

  Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F1/06, F28F1/08) · CPC title

• F28F9/0224

  Header boxes formed by sealing end plates into covers (F28F9/0221 takes precedence) · CPC title

• F28D1/0443

  Combination of units extending one beside or one above the other (F28D1/0452 takes precedence) · CPC title

• F28F9/0209 Primary

  having only transversal partitions · CPC title

• F28F2265/26

  for allowing differential expansion between elements · CPC title