JPH01266931A - Manufacture of heat exchanger - Google Patents

Abstract

PURPOSE:To reduce the assembling time without using a jig, a tool by eliminating the need for individually positioning or fixing tubular parts when adjacent, parallel, tubular parts are joined at joining places and sections, headers and corrugated fins are assembled. CONSTITUTION:A section 11 formed from an Al extruded section 11 is wounded in the shape of a coil and a wound section 11 is fed and straightened flatly by straightening rollers 21 and then out by a cutter 22 to a length of one heat exchanger. The unnecessary part of the cut section is punched by a press 23 and the headers 14 and the corrugated fins 15 are assembled and set to the sections 13. The end parts of a tubular member 32 are inserted into the through hole 17 of each header 14, a corrugated fin 15 is interposed between the adjacent tubular parts 32, the sections 13, the headers 14 and the corrugated fins are assembled, sent to the next brazing stage and brazed. Hereby, a plurality of tubular parts of sections need not be positioned and fixed and the assembling time can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for manufacturing a heat exchanger used as a condenser in car coolers, refrigerators, room coolers, etc.

BACKGROUND ART The heat exchanger described above includes parallel heat exchange tubes, headers connected to both ends of the heat exchange tubes, and corrugated fins interposed between adjacent heat exchange tubes. What exists is known.

The heat exchanger manufacturing method described above involves cutting a heat exchange tube into a predetermined length, and assembling the cut heat exchange tube, header, and corrugated fins.

Problem to be Solved by the Invention In the above method, a large number of jigs and tools are required for positioning and fixing the heat exchange tubes, headers, and corrugated fins because they are all separated, and the assembly time is long. It took.

An object of the present invention is to provide a method for manufacturing a heat exchanger that solves the above problems.

Means for Solving the Problems A method of manufacturing a heat exchanger according to the present invention involves extrusion molding a shape having a parallel tubular portion and a parallel flat plate portion spanning adjacent tubular portions, and Cut out both side edges along the entire length of the same edge, punch out the part sandwiched by the band parts so that the band parts remain along both notches, use the band parts as connecting parts, and attach the ends of the tubular part. The section is fitted into a through hole pre-formed in the peripheral wall of the header, and the same end is joined to the peripheral edge of the through hole, and a corrugated fin is interposed between adjacent tubular sections to connect the opposing surfaces of the adjacent tubular sections. This is used to join the wave heads of corrugated fins.

Function: When assembling a section, adjacent parallel tubular sections are connected at a connecting section, and when assembling sections, headers, and corrugated fins, the tubular section must be assembled by itself. There is no need to fix the position, and a jig for that purpose is provided.
No tools required.

Example Embodiments of the invention will now be described with reference to the drawings.

As shown in FIG. 1, the method for manufacturing a heat exchanger includes a forming step S in which an aluminum shaped material 11 is extruded, a winding step S2 in which the formed shaped material 11 is wound into a coil shape, and a winding step S2 in which the formed shaped material 11 is wound into a coil shape. The correction roller 21 feeds out the removed profile 11.
unwinding step S3 in which the cutter 22 straightens the material 12 so that it is flat and cuts it into lengths corresponding to one heat exchanger, and a press 23 punches out unnecessary parts of the shape material 12 cut to a predetermined length. It includes a pressing step S4 for removing, and a setting step S5 for assembling the header 14 and the corrugated fin]5 on the section 13 from which unnecessary parts have been punched out.

As shown in FIG. 2, the shaped member 11 formed in the forming step S1 includes a parallel tubular section 32 having two hollow sections 31 serving as fluid passages and an adjacent tubular section at one edge of the tubular section 32. It consists of parallel flat plate-like parts 33 extending over 32 parts.

The shape member 11 wound into a coil shape in the winding step S2 has its flat plate portion 33 side facing outward.

The press 23 has a punch 24 and a lower die 25. Although not shown, in addition to the hole through which the punch 24 passes, a positioning hole 26 into which the tubular portion 32 of the profile 12 is fitted is formed in the lower mold 25 .

As shown in FIG. 3, by the press 23, both edges of the flat plate-like part 33 of the profile 12 on the end surface side are notched along the entire length of the edges, and strips remain along both the notches. The portion sandwiched between the strips is punched out, and the strips are used as the connecting portions 41.

Both the header 14 and the corrugated fins 15 are made of plating sheet. As shown in FIG. 4, through holes 17 are formed in the peripheral wall 16 of the header 14 at intervals equal to the intervals between the tubular sections 32, and which match the outer surfaces of the ends of the tubular sections 32. As shown in FIG.

The above profile 13, header 14 and corrugated fin 1
5 is sent to a setting step S5 after cleaning, and there, as shown in FIG.
4 and the corrugated fins 15 are assembled so that the corrugated fins 15 are inserted into the through holes 17 of 4 and are interposed between the adjacent tubular parts 32.

Shape 13 and header 1 assembled as explained above
4 and the corrugated fins 15 are sent to the next process, a brazing process, where the end of the tubular part 32 is corrugated to the peripheral edge of the through hole 17 and the opposing surface of the adjacent tubular part 32 is corrugated by the brazing material of the plating sheet. The wave heads of the fins 15 are respectively joined and integrated.

Effects of the Invention According to the present invention, when assembling a section, a header, and a corrugated fin, there is no need to position and fix the plurality of tubular sections of the section, so there is no need for jigs, tools, etc., and assembly is easy. Attachment can save time.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a manufacturing process diagram;
Fig. 2 is a perspective view of the extruded section, Fig. 3 is a perspective view of the section with unnecessary parts punched out, Fig. 4 is a perspective view of the header, and Fig. 5 is a perspective view of the section, header, and corrugated fins. It is a front view showing an assembled state. 11. , 13 Profile, 14 Header, 15 Corrugated fin, 16 Peripheral wall, 17 Through hole, 3
2... Tubular part, 33... Flat plate part. Patent applicant: Showa Aluminum Co., Ltd. 1st cause

Claims (1)

[Claims] extrusion molding a shape member 11 having parallel tubular portions 32 and parallel flat plate portions 33 spanning adjacent tubular portions 32;
Both edges of the flat plate-shaped part 33 on the end surface side of the profile are cut out along the entire length of the edges, and the parts sandwiched by the band-shaped parts are punched out so that the band-shaped parts remain along both notches. The connecting portion 41 is formed by fitting the end of the tubular portion 32 into the through hole 17 previously formed in the peripheral wall 16 of the header 14 and joining the same end to the peripheral edge of the through hole 17, and connecting between the adjacent tubular portions 32. A method for manufacturing a heat exchanger in which the corrugated fins 15 are interposed between the corrugated fins 15 and the corrugated crests of the corrugated fins 15 are joined to opposing surfaces of adjacent tubular portions 32.