Patent ID: 11927397
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 3:
4. A method of manufacturing a tube assembly for a heat exchanger or heat management apparatus, the method comprising:
manufacturing a first-row tube and a second-row tube, each of which comprises an inner fin type tube;
manufacturing a header having a first-row tube hole and a second-row tube hole, into which ends of the first-row tube and the second-row tube are respectively inserted;
arranging the first-row tube and the second-row tube in a longitudinal direction and forming a central connection portion that is disposed therebetween and connecting the first-row tube and the second-row tube;
forming an embossment on a surface of the central connection portion between the first-row tube and the second-row tube, the embossment having a projection relative to the surface of the central connection portion so that condensate is drained in a longitudinal direction along the surface of the embossed central connection portion;
forming a cut portion in the central connection portion between the ends of the first-row tube and the second-row tube inserted into the header; and
inserting the ends of the first-row tube and the second-row tube into the first-row tube hole and the second-row tube hole of the header to protrude therefrom, respectively,
wherein a length of the cut portion is based on a thickness of a material of the header and a length at which the ends of the first-row tube and the second-row tube are inserted into the header and protrude therefrom.