CN112672610A

CN112672610A - Closed air-cooled radiator and manufacturing process thereof

Info

Publication number: CN112672610A
Application number: CN202011571572.7A
Authority: CN
Inventors: 杨田
Original assignee: Zhenjiang Honglian Electrician Co ltd
Current assignee: Zhenjiang Honglian Electrician Co ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2021-04-16

Abstract

The invention discloses a closed air-cooled radiator and a manufacturing process thereof, and the closed air-cooled radiator comprises two radiating main bodies which are arranged in central symmetry, wherein each radiating main body comprises a base plate and radiating fins, and the two radiating main bodies are respectively extruded and formed by a profile extrusion process; two heat dissipation main bodies are assembled in a centrosymmetric manner through the positioning of the positioning end and the assembling groove; and welding the assembly position of the positioning end and the assembly groove by a friction stir welding process. IGBT modules can be installed to effectively radiate heat; meanwhile, due to the closed structure, the heat brought away in the process of wind flowing can be improved, and the heat dissipation efficiency is further improved. The processes of extrusion forming, assembling and welding can be synchronously carried out, and the processes of synchronous forming, convenient processing and cost saving are realized.

Description

Closed air-cooled radiator and manufacturing process thereof

Technical Field

The invention relates to the technical field of radiators, in particular to a closed air-cooled radiator and a manufacturing process thereof.

Background

At present, electronic equipment is increasingly applied to the industries of automobile industry, high-speed rail, wind power generation and the like, and compact product equipment with small size, stable performance and competitiveness is gradually pursued in the market. The heat flux density per unit area is getting larger and larger, and a reasonable heat dissipation scheme is needed for better improving the reliability of the system.

In the prior art, a traditional air-cooled radiator is of a single-substrate and integral vertical tooth sheet type structure; the whole vertical tooth piece has small tooth piece area and limited heat dissipation efficiency, and other components need to be additionally provided with structural members to be installed in the integral installation process of the single substrate, so that the compact effect of equipment cannot be achieved.

Disclosure of Invention

The invention aims to solve the defects of the prior art, and provides a closed air-cooled radiator which comprises two radiating main bodies which are arranged in a central symmetry manner, wherein each radiating main body comprises a base plate and radiating fins, the base plate consists of a contact plate and a side supporting plate, one end of the side supporting plate, which is far away from the contact plate, is a positioning end, and a welding supporting rib is arranged at the position, which is close to the positioning end, of the side supporting plate; the end, far away from the side supporting plate, of the contact plate is an assembling end, an assembling groove is formed in the inner surface of the contact plate, close to the assembling end, the shape of the assembling groove is matched with that of the positioning end, and a welding thickening convex surface is reserved on the outer surface of the contact plate, located at the assembling end; the radiating fins are arranged on the inner surface of the contact plate.

Furthermore, a plurality of mounting holes are preset on the contact plates and the side supporting plates of the two heat dissipation main bodies.

Furthermore, the width of the welding thickening reserved convex surface is larger than that of the assembling groove.

Furthermore, the inner surface of the side supporting plate is provided with a reinforcing rib.

Furthermore, the welding support ribs are symmetrically arranged on the inner side and the outer side of the side support plate.

A manufacturing process of a closed air-cooled radiator comprises the following steps:

respectively carrying out extrusion forming on two heat dissipation main bodies through a profile extrusion process;

step two, assembling the two heat dissipation main bodies in a centrosymmetric manner through the positioning of the positioning end and the assembling groove;

and step three, welding the assembly position of the positioning end and the assembly groove through a friction stir welding process.

Has the advantages that: in the invention, the closed radiator structure formed by assembling the two radiating main bodies is adopted, compared with the traditional radiator, the double-sided substrate design of the two radiating main bodies is adopted, and IGBT modules can be arranged on the upper, lower, right and left sides (A, B, C, D sides in the figure) of the radiator preset with the mounting holes, so that the effective radiating work is carried out; meanwhile, due to the closed structure, the heat brought away in the process of wind flowing can be improved, and the heat dissipation efficiency is further improved; the contact thermal resistance between the tooth sheet and the substrate is small, and the heat dissipation effect is good.

In the invention, the production of two heat dissipation main bodies can be simultaneously finished by adopting a profile extrusion process, and after the two heat dissipation main bodies are assembled, the assembly positions (e and f in the drawing) of the positioning end and the assembly groove are subjected to friction stir welding, so that the assembly and the molding of the whole radiator can be finished. The reserved positioning end and the reserved assembly groove can improve the assembly efficiency, the welding support rib plays a role in positioning and supporting, and the reserved welding thickened convex surface reserves the allowance of post-processing, so that the cost is saved; the adoption of friction stir welding can lead the welded position to form compact solid-phase welding seam under the extrusion of a welding tool, thereby improving the strength of the welded position. The processes of extrusion forming, assembling and welding can be synchronously carried out, and the processes of synchronous forming, convenient processing and cost saving are realized.

Drawings

FIG. 1 is an exploded view of a closed air-cooled radiator;

FIG. 2 is a schematic perspective view of a closed air-cooled radiator

FIG. 3 is a schematic view of the weld locations of a friction stir weld;

FIG. 4 is a schematic structural diagram of a heat dissipating body;

in the figure: 1. go up the heat dissipation main part, 2, lower heat dissipation main part, 3, base plate, 4, radiating fin, 5, contact plate, 6, collateral branch backup pad, 7, location end, 8, welding backup pad, 9, assembly recess, 10, reserve welding thickening convex surface, 11, mounting hole, 12, strengthening rib.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

As shown in fig. 1-4, a closed air-cooled radiator includes two heat dissipation main bodies arranged in a central symmetry manner, namely an upper heat dissipation main body 1 and a lower heat dissipation main body 2, the heat dissipation main bodies include a substrate 3 and heat dissipation fins 4, the substrate 3 is composed of a contact plate 5 and a side supporting plate 6, one end of the side supporting plate 6, which is far away from the contact plate 5, is a positioning end 7, and a welding supporting rib 8 is arranged at a position of the side supporting plate 6, which is close to the positioning end 7; the end, far away from the side supporting plate 6, of the contact plate 5 is an assembling end, an assembling groove 9 is formed in the inner surface of the contact plate 5, close to the assembling end, the shape of the assembling groove 9 is matched with that of the positioning end 7, and a welding thickening convex surface 10 is reserved on the outer surface of the contact plate 5, located at the assembling end; the heat radiating fins 4 are mounted on the inner surface of the contact plate 5.

In this embodiment, a plurality of mounting holes 11 are preset on the contact plate and the side support plate of the two heat dissipation bodies.

In this embodiment, the width of the welding-reserved thickening convex surface 10 is greater than that of the assembling groove 9.

In this embodiment, the inner surface of the side support plate 6 is provided with a rib 12.

In this embodiment, the welding support ribs 8 are symmetrically disposed on the inner side and the outer side of the side support plate 6.

step two, two heat dissipation main bodies are assembled in a centrosymmetric manner through the positioning of the positioning end 7 and the assembling groove 9;

and step three, welding the assembly position of the positioning end 7 and the assembly groove 9 through a friction stir welding process.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A closed air-cooled radiator, characterized in that it comprises two radiating bodies arranged symmetrically in the center, the radiating bodies comprise a base plate and a radiating fin, and the base plate is composed of a contact plate and a side support plate , the end of the side support plate away from the contact plate is the positioning end, and the side support plate is provided with a welding support rib near the positioning end; the end of the contact plate away from the side support plate is the assembly end, and the inner surface of the contact plate is close to The assembly end is provided with an assembly groove, the shape of the assembly groove is matched with the positioning end, and the outer surface of the contact plate is provided with a reserved welding thickened convex surface at the assembly end; the heat dissipation fins are installed on the contact plate. on the inner surface of the board.

2 . The closed air-cooled radiator according to claim 1 , wherein a plurality of installation holes are preset on the contact plates and the side support plates of the two heat dissipation bodies. 3 .

3 . The closed air-cooled radiator according to claim 1 , wherein the width of the reserved welding and thickening convex surface is larger than the width of the assembling groove. 4 .

4 . The closed air-cooled radiator according to claim 1 , wherein a reinforcing rib is provided on the inner surface of the side support plate. 5 .

5 . The closed air-cooled radiator according to claim 1 , wherein the welded support ribs are symmetrically arranged on the inner and outer sides of the side support plate. 6 .

6. The manufacturing process of a closed air-cooled radiator according to claims 1 to 5, comprising the following steps:

Step 1: Extruding the two heat-dissipating bodies separately through a profile extrusion process;

Step 2, through the positioning of the positioning end and the mounting groove, the two heat dissipation bodies are symmetrically assembled into a center;

Step 3: Welding at the assembling position of the positioning end and the assembling groove by the friction stir welding process.