Tube assembly for heat management apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11927397-B2
Application number	US-202016737095-A
Country	US
Kind code	B2
Filing date	Jan 8, 2020
Priority date	Jan 8, 2019
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

The present invention is directed to providing a tube assembly for a heat exchanger or heat management apparatus in which the tube assembly can be integrally assembled using inner fin tubes having a two-row structure and drainage performance and corrosion resistance performance can be improved. The tube assembly for the heat exchanger or heat management apparatus includes a first- and second-row tube including an inner fin type tube respectively, a central connection portion that connects the first-row tube to the second-row tube, and a header in which a first- and a second-row tube hole, into which ends of the first- and the second-row tube are inserted, are arranged, wherein a cut portion formed in the direction opposite to the ends of the first- and the second-row tube inserted into the header is included in the central connection portion.

First claim

What is claimed is:

1. A tube assembly for a heat exchanger or heat management apparatus, the tube assembly comprising:
a first-row tube comprising an inner fin type tube;
a second-row tube comprising an inner fin type tube;
a central connection portion that connects the first-row tube to the second-row tube; and
a header comprising a first-row tube hole and a second-row tube hole, and ends of the first-row tube and the second-row tube that are inserted into the first-row tube hole and the second-row tube hole to protrude therefrom, respectively,
wherein a surface of the central connection portion between the first-row tube and the second-row tube is embossed to form an embossment having a projection relative to the surface of the central connection portion and configured to drain condensate in a longitudinal direction along the surface of the embossed central connection portion,
wherein a cut portion is formed in the central connection portion between the ends of the first-row tube and the second-row tube inserted into the header, and
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.

2. The tube assembly of claim 1 , wherein the central connection portion is formed by bonding a spacer to each facing side of the first-row tube and the second-row tube.

3. The tube assembly of claim 1 , wherein, when the first-row tube and the second-row tube are manufactured in an inner fin type, sides outside each of the first-row tube and the second-row tube are not to overlap surfaces inside each of the first-row tube and the second-row tube so as to be folded but are bent so as to be radially spread toward facing sides and thus the sides outside each of the first-row tube and the second-row tube are bonded so as to form the central connection portion.

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.

5. The method of claim 4 , wherein the forming of the central connection portion comprises bonding a spacer to each facing side of the first-row tube and the second-row tube.

6. The method of claim 4 , wherein, when the first-row tube and the second-row tube are manufactured, the forming of the central connection portion comprises not overlapping sides outside each of the first-row tube and the second-row tube with surfaces inside each of the first-row tube and the second-row tube so as to be folded but bending the sides outside each of the first-row tube and the second-row tube so as to be radially spread toward facing sides and thus bonding the sides outside each of the first-row tube and the second-row tube to each other so as to form the central connection portion.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Kim Hwa Sung

Classifications

• F28D1/0391 Primary

  a single plate being bent to form one or more conduits · CPC title

• F28F1/022 Primary

  with multiple channels · CPC title

• B21C37/151

  Making tubes with multiple passages · CPC title

• B23K1/0012

  Brazing of heat exchangers · CPC title

• B23K2101/14

  Heat exchangers · CPC title