JPS6236027Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heat exchanger, and more particularly, to a heat exchanger in which a heat exchange shell and an endothermic part are welded and fixed with a brazing material.

This type of heat exchanger has been provided in the past, but in this case, it was difficult to weld and fix the two pieces of brazing metal, especially when arranging the brazing metal during automatic brazing in a brazing furnace.

Therefore, this invention provides a heat exchanger that does not have the above-mentioned disadvantages, and will be described in detail below with reference to the drawings. Reference numeral 1 denotes a heat absorbing section in which a large number of fins 2 are arranged in parallel between brackets 4 on both sides, and a heat exchanger pipe 3 is inserted through these fins. This heat absorbing part 1 is welded and fixed to the heat exchange cylinder 5 by a brazing metal, but a part of it is polymerized with the bracket 4 on the outside and the heat exchange cylinder 5 on the inside, and the brazing metal is welded at this overlapped part. .

6 is a locking piece, which is attached to the heat exchange cylinder 5 of the bracket 4;
It is bent outward and provided on the overlapping end 4a side. 7 is an insertion hole for the heat exchange pipe 3. Reference numeral 8 denotes a notch, which is created by forming the locking pieces 61 of adjacent brackets 41 when a large number of the brackets 4 are successively formed. The locking piece 6 is a brazing material 9
It is sufficient that the bracket is placed so that it is locked without falling, so if the material is removed as shown in Figure 5, a notch 8 will be created, but it is the same size as the locking piece and is not that large, so the bracket is structurally It is advantageous in terms of materials because it does not become weak. Reference numeral 9 denotes a brazing material for welding and fixing the heat absorbing portion 1 and the heat exchange shell 5, and is arranged in the space between the locking piece 6 and the heat exchange shell 5.

The heat exchanger of the present invention is constructed as described above, and when welding and fixing the heat absorbing part 1 and the heat exchange shell 5 using a brazing material, the bracket 4 of the heat absorbing part 1 is placed on the outside, and the heat exchange shell 5 is The locking piece 6 and the heat exchanger body 5 are partially polymerized and bonded to each other on the inside and bent outward.
After the brazing material 9 is placed in the space created between the two, automatic brazing or the like is performed in a brazing furnace.
The locking piece 6 may be bent outward before or after the heat absorbing portion 1 is polymerized and bonded to the heat exchange barrel 5.

As described above, in the heat exchanger of the present invention, the bracket 4 of the heat absorption part 1 is provided with the locking piece 6 bent outward, which helps in positioning the brazing material and prevents the brazing material from falling during brazing. It has very good workability and does not cause damage to the brazing weld due to falling brazing metal.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the proposed heat exchanger, Figure 2 is an enlarged view of its main parts, Figure 3 is an enlarged cutaway view of its main parts, Figure 4 is an exploded perspective view, and Figure 5 is a diagram showing the bracket. . DESCRIPTION OF SYMBOLS 1... Heat absorption part, 2... Fin, 3... Heat exchange pipe, 4... Bracket, 5... Heat exchange cylinder, 6...
... Locking piece, 9... Brazing material.

Claims (1)

[Scope of utility model registration request] A heat absorber consisting of brackets on both sides, a large number of fins arranged in parallel between the brackets, and a heat exchange pipe inserted through them, and a heat exchange shell are assembled together with the brackets on the outside and the heat exchange shell on the inside. In a heat exchanger in which parts are polymerized and the overlapped parts are welded and fixed to each other with a brazing material, a locking piece bent outward is provided on the end side of the bracket where it overlaps with the heat exchange body. Features of heat exchanger.