# US 11,029,100 B2 · Heat exchanger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,100 B2 - Document ID: US11029100B2 - Status: Granted - Kind: B2 - Application number: 15/307,366 - Filed: 2015-04-28 - Published: 2017-02-16 - Granted: 2021-06-08 - Earliest claimed: 2014-04-29 - Assignees: Mahle International GmbH - Applicants: Mahle International GmbH - Inventors: Albrecht Siegel; Simon Hund; Faber Christian - Web page: https://patentgrep.com/patent/US11029100B2 ## CPC - F28F 9/002: {with fastening means for other structures} - F02M 26/32: Liquid-cooled heat exchangers - F28D 7/103: {consisting of more than two coaxial conduits or modules of more than two coaxial conduits} - F28D 7/16: the conduits being arranged in parallel spaced relation ({F28D7/0008 - F28D7/0058 take precedence}; F28D7/02 - F28D7/10 take precedence) - F28F 2275/00: Fastening; Joining - F28F 2275/025: by using adhesives - F28F 2275/04: by brazing - F28F 2275/06: by welding - F28F 2275/10: by force joining - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The heat exchanger as claimed in claim 1, wherein the heat exchanger is formed as an exhaust gas heat exchanger. ### Claim 3 (depends on 1) The heat exchanger as claimed in claim 1, wherein the flange is formed as a closed ring. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 1) The heat exchanger as claimed in claim 1, wherein a wall thickness t of the flange is 2.3 mm. ### Claim 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. ### Claim 8 (depends on 2) The heat exchanger as claimed in claim 2, wherein the flange is formed as a closed ring. ### Claim 9 (depends on 2) The heat exchanger as claimed in claim 2, wherein the flange has a thread. ### Claim 10 (depends on 2) 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. ### Claim 11 (depends on 10) The heat exchanger as claimed in claim 10, wherein the flange is formed as a closed ring. ### Claim 12 (depends on 10) The heat exchanger as claimed in claim 10, wherein the flange has a thread. ### Claim 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. ### Claim 14 (depends on 1) The heat exchanger as claimed in claim 1, wherein the wall has a uniform thickness. ### Claim 15 (depends on 5) The heat exchanger as claimed in claim 5, wherein the two connecting pieces are on the same side of the flange.