Heat exchanger

Patent metadata

Field	Value
Publication number	US-11029100-B2
Application number	US-201515307366-A
Country	US
Kind code	B2
Filing date	Apr 28, 2015
Priority date	Apr 29, 2014
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A heat exchanger for an internal combustion engine may include a base tube and a flange extending at least partially around the base tube. The flange may be formed as a forged piece.

First claim

The invention claimed is:

1. A heat exchanger for an internal combustion engine, comprising:
a base tube;
a flange extending at least partially around the base tube, wherein the flange is formed as a forged piece; and
an adhesive between the flange and the base tube to provide a permanent bond between the flange and the base tube;
wherein the flange has a V-shaped cross-section and is formed by a wall bent in the shape of a V to form the V-shaped cross-section with a cavity between the wall and the base tube;
wherein the flange has a thread on a radially outermost section of the flange; and
wherein a wall thickness t of the flange is in the range of 2 mm≤t≤3.0 mm, and a ratio of an outer diameter of the flange to the wall thickness ranges between 37.3:1 and 56:1.

2. The heat exchanger as claimed in claim 1 , wherein the heat exchanger is formed as an exhaust gas heat exchanger.

3. The heat exchanger as claimed in claim 1 , wherein the flange is formed as a closed ring.

4. The heat exchanger as claimed in claim 1 , wherein the flange has at least one contact section with which the flange rests flatly on the base tube.

5. The heat exchanger as claimed in claim 1 , wherein the base tube has two connecting pieces via which a fluid is led into an interspace delimited by tubes of the base tube and the base tube.

6. The heat exchanger as claimed in claim 1 , wherein a wall thickness t of the flange is 2.3 mm.

7. A motor vehicle comprising at least one heat exchanger having:
a base tube;
a flange extending at least partially around the base tube, wherein the flange is formed as a forged piece; and
an adhesive between the flange and the base tube to provide a permanent bond between the flange and the base tube;
wherein the flange is formed by a wall having a contact section and a V-shaped section, the contact section resting flatly against the base tube, and the contact section and the V-shaped section having a same thickness;
wherein the V-shaped section has a thread; and
wherein a wall thickness t of the flange is in the range of 2 mm≤t≤3.0 mm, and a ratio of an outer diameter of the flange to the wall thickness ranges between 37.3:1 and 56:1.

8. The heat exchanger as claimed in claim 2 , wherein the flange is formed as a closed ring.

9. The heat exchanger as claimed in claim 2 , wherein the flange has a thread.

10. The heat exchanger as claimed in claim 2 , wherein a wall thickness t of the flange is in the range of 2 mm≤t≤3.0 mm.

11. The heat exchanger as claimed in claim 10 , wherein the flange is formed as a closed ring.

12. The heat exchanger as claimed in claim 10 , wherein the flange has a thread.

13. A heat exchanger for an internal combustion engine, comprising:
a base tube having tubes in which a first fluid is flowable, and two connecting pieces via which a second fluid is led into an interspace delimited by the tubes and the base tube; and
a flange extending at least partially around the base tube, the flange being formed from a wall bent to have at least one contact section with which the flange rests flatly on the base tube, and a V-shaped section defining a cavity between the wall and the base tube, the flange being formed as a forged piece and adhesively bonded to the base tube;
wherein the at least one contact section and the V-shaped section have a same thickness;
wherein the flange has a thread on a radially outermost section of the V-shaped section; and
wherein a wall thickness t of the flange is in the range of 2 mm≤t≤3.0 mm, and a ratio of an outer diameter of the flange to the wall thickness ranges between 37.3:1 and 56:1.

14. The heat exchanger as claimed in claim 1 , wherein the wall has a uniform thickness.

15. The heat exchanger as claimed in claim 5 , wherein the two connecting pieces are on the same side of the flange.

Assignees

• Mahle Int Gmbh

Inventors

• Siegel Albrecht
• Hund Simon
• Christian Faber

Classifications

• F28F2275/00

  Fastening; Joining · CPC title

• F28D7/16

  the conduits being arranged in parallel spaced relation ({F28D7/0008 - F28D7/0058 take precedence}; F28D7/02 - F28D7/10 take precedence) · CPC title

• F28F2275/06

  by welding · CPC title

• F28D2021/008

  for vehicles · CPC title

• F28F2275/10

  by force joining · CPC title