JPS58106395A - Heat-radiating and cooling panel and production thereof - Google Patents

Abstract

PURPOSE:To facilitate production of a heat-radiating and cooling panel with excellent adhesion at a flat surface part from a true-circular tube, by a method wherein a true-circular tube preformed into a meandering shape is formed to have a semicircular cross section by a metallic die provided with a meandering semicircular groove, and is pressed-bonded to a heat-radiating plate on the die. CONSTITUTION:The true-circular tube 3 preformed into a meandering shape is fitted into the semicircular groove 1 cut in a surface of the metallic die 2, and is formed to have the semicircular cross section by pressing from above by a press or a roller. In this case, end parts 8 of several centimeters in length of the tube 3 are projected outwards from the die 2 to constitute connecting parts for other tubes. Then, the heat-radiating plate 7 such as an aluminum plate is adhered to the tube 3 by an adhesive on the die 2, and is press-bonded to the tube 3 by pressing from above by a press or a roller. Accordingly, the panel with excellent adhesion at the flat surface part can be produced by a small number of mechanical working steps without using any manual working.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a heat dissipation and cooling panel using a tube having an arcuate cross section, which has a large contact area with a flat plate and therefore has a good heat dissipation effect.

After processing a perfectly circular pipe into a tube with a bow-shaped cross section,
This invention is a manufacturing method that eliminates the above-mentioned drawbacks, such as bending the tube into a serpentine shape, causing deformation and wrinkles in the flat portion (2) of the tube, which impairs the adhesion of the flat portion (0).

To explain with drawings, 1) A mold with an arcuate groove carved into a flat plate as shown in Figure 1.
As shown in Figure 2, fit a perfect circular tube (2) bent twice in a meandering shape into the groove, and press the upper part (2) to easily clean the flat part in one step. A serpentine cross section allows the manufacture of arcuate tubes.

2) By applying the roller (2) on the flat surface of the mold (2) using a roller as shown in FIG.

3) As shown in Figure 3, when fitting a perfectly circular tube into the arcuate groove ■ of the mold ■, bring out the number 1 ear portions ■ on both ends of the tube outside the mold ■, and insert the round tube all the way around the mold ■. By applying a press ■ or roller ■ until the end of the mold ■, the part of the tube ■ sticking out from the mold ■ remains a perfect circular tube.
, When connecting to another perfectly circular tube, the conventional perfectly circular joint can be used as is, which is convenient because there is no need for a special joint.

When press ■ or roller ■ is applied, the part ■ of the tube that protrudes outside the mold ■ should be reinforced with a removable cap such as a cap to prevent the perfect circle from being deformed.

4) While placing the tube (which has a bow-shaped cross section) manufactured by methods 1), 2), and 3) on the mold ■, attach a heat dissipation plate ■ using a heat-resistant adhesive with good thermal conductivity. Adhere it and press it on the heat sink by applying a press (■) or a roller (■).

As described above, it is possible to manufacture a finished product by performing steps from the tube with an arcuate cross section to bonding the heat dissipation plate to the heat dissipation plate in a process only on the mold, and with less machining and no manual processing.

By this method, it is possible to produce a panel for heat radiation and cooling that has strong adhesion between the tube (1) and the heat sink (2), and therefore has high heat radiation performance.

In addition, panel dimensions, tube arrangement density, etc. can be differentiated for each application and made into modules, making it possible to mass produce, reduce costs, and save labor. Effective as prefabricated equipment.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a mold with a serpentine arcuate groove carved into it. Figure 2 is a perspective view of a perfect circular tube carved into a serpentine shape. Figure 4 is a perspective view of a perfectly circular tube fitted into the mold. Figure 5 is a diagram of the press procedure (1 part sectional view). Figure 5 is a diagram of the roller procedure (1 part sectional view). Figure 6 is a meandering shape inside the mold. Figure 7 is a completed cross-sectional view of a tube with a bow-shaped cross section. Figure 8 is a cross-sectional view of the heat sink installed on the mold. Figure 8 is a completed perspective view of a heat dissipation and cooling panel (viewed from the side of the tube with a bow-shaped cross section). Figure 9 is a partially enlarged MWJ diagram showing the adhesion between a tube with an arcuate cross section and a heat sink. A serpentine, perfectly circular tube ■ is a serpentine tube with an arcuate cross section ■ is a press ■ is a roller ■ is a heat sink ■ is a perfect circular ear at both ends of the tube ■ is a tube with an arcuate cross section Flat portion of tube Patent applicant: Shigeru Matsushita, Representative of Total System Co., Ltd.

Claims (1)

[Claims] A method of manufacturing a serpentine tube with an arcuate cross-section using a perfectly circular copper or steel tube, and constructing a heat dissipation and cooling panel using the serpentine tube 1) An arcuate groove in a flat plate. Into the groove of the mold ■ carved into a serpentine shape, insert a perfectly circular tube ■ that has been bent in a meandering manner beforehand, and press the upper part with a press vyL■ to create a tube with a serpentine cross-section that has an arcuate shape. How to manufacture. 2) During the above process, a roller (2) is used instead of a press to roll a roller (2) onto the plane of the mold to produce a tube (2) with a meandering cross section and an arcuate shape. 3) A manufacturing method in which when inserting the perfectly circular tube ■ into the arcuate groove ■ of the mold ■, the number 1 ear parts ■ of the perfectly circular tube are left at both ends of the tube. 4) A heat dissipation and cooling panel is made by pressing a tube with a bow-shaped cross section produced by the methods 1), 2), and 3) above onto a heat dissipation plate such as an aluminum plate using an adhesive on a mold. How to manufacture. μ and 44 cows.