JP2000154984A - Modularized composite heat sink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To largely reduce a cost and to stabilize quality by a mass production effect by bending a strip-like thin plate having good thermal conductivity to form a plurality of standard heat exchanging modules, and selectively connecting the modules to a heat receiving and radiating module plate to be complexed. SOLUTION: A plurality of standard heat exchanging modules 1 are formed by serpentine bending a strip-like thin plate 2 having good thermal conductivity plural times, and a combination of the modules 1-1, 1-2 of them is selected. Heat receiving and radiating module plates 3 delivers and receives a cold heat amount generated from a heat quantity supply element 4 to and from the modules 1 to exchange a heat quantity. The heat receiving and radiating module is selected from a plurality of module plates standardized corresponding to a shape of the element 4, a size of a heat flux and the like. The plates 3 are connected to the modules 1, and complexed to constitute a modularized composite heat sink having a desired heat receiving and radiating capability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a light-weight and high-performance heat sink for heat radiation, and more particularly to one or more selected modules among a plurality of standard type heat exchange modules. The present invention relates to a structure of a modularized composite heat sink in which a selected module in a standard type heat receiving / radiating module plate is joined and combined to form a composite heat sink having a desired light weight, high performance and heat radiation capability.

[0002]

2. Description of the Related Art An ordinary composite heat sink is formed by integrating a light-weight and high-performance heat exchange section and a heat receiving plate for mounting a heating element by brazing. Therefore, it is superior to an extruded aluminum heat sink in that it is lightweight and has high performance.

[0003]

However, although the composite heat sink has the advantage of being lightweight and high performance as compared with the extruded aluminum heat sink, the composite heat sink has a complicated structure, a complicated manufacturing process, and a high cost. Was a problem. In addition, extruded aluminum heat sinks can respond to differences in heat value only by cutting and adjusting the length, whereas composite heat sinks require individual design changes for differences in applied heat value. This has also made cost reduction difficult.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a lightweight, high-performance composite heat sink with significantly reduced cost. The composite heat sink referred to here is a heat sink manufactured by processing and assembling a member having good heat conduction. The heat sink designation for extruded integral heat sink is used as a synonym for all types of heat sinks.

[0005] The basic concept of solving the problems of the present invention is as follows.
Modular structure, which has a structure that can be divided into unit modules that are easy to standardize and that can be easily mass-produced, and has a modular structure that can be easily increased in capacity by combining unit modules with a standard structure. . The modularization here refers to a combination of unit modules.

FIG. 1 shows a side view of an example of the basic structure. The heat sink of the present invention has a basic structure of a modular composite heat sink having a combination structure of a standard type heat exchange module and a standard type heat receiving / radiating module.
In FIG. 1, reference numeral 1 denotes a heat exchange module, which further comprises a plurality of standard heat exchange modules 1- 1 formed by serpentine bending of a strip-shaped thin plate 2 having a very good heat conductivity a predetermined number of times. n is a combination of selected modules 1-1 and 1-2. The heat exchange module 1 may be a single unit. 2 and 3 are perspective views showing various configurations of the standard heat exchange module 1-n. The reason for adopting the serpentine bending structure of the strip-shaped thin plate 2 in this module is that
This is because the heat exchange unit 1 having any number of turns can be easily configured by a combination of a few simple unit modules such as a two-turn structure, a three-turn structure, and a four-turn structure. That is, the serpentine bending structure of the thin plate 2 is characterized in that connection with an adjacent module is easy.

In FIG. 1, reference numeral 3 denotes a heat receiving / radiating module plate, which is a module for exchanging the amount of heat or cold generated by the heat supply element 4 with the heat exchange module 1 to exchange the amount of heat. This module is a module selected from a plurality of various standard-type heat receiving and radiating module plates that are standardized specifically for the shape, size, heat flux size, etc. of the heat supply element 4. 1
To form a modularized composite heat sink having a desired ability to receive and dissipate heat.

[0008]

The modular composite heat sink having the basic structure as described above has the following effects. (1) Since the conventional composite heat sink is designed and manufactured for each order, the biggest problem is that the delivery time is longer and the price is higher than the conventional heat sink. However, since each standard module of the modularized composite heat sink according to the present invention can be mass-produced and can always be stocked, there is no need for individual design and individual production at the time of receiving an order. The time is greatly reduced, enabling extremely short delivery times, and at the same time significant cost reductions.

(2) The production of each standard module can be automated and mass-produced, so that a higher quality control can be achieved and stable compared to the conventional composite heat sink, which is an individual order individual production system. Therefore, it is possible to manufacture the heat sink with a small manufacturing error, and the product becomes a stable and high-performance composite heat sink.

(3) It is not necessary for the user to purchase a modularized composite heat sink as a finished product, and it is possible to produce a product unique to each user, in which the standard module of the present invention is attached to a composite heat sink uniquely designed for each user. The degree of freedom of design on the user side increases. In other words, each of the standard modules is a low-priced, high-quality individual product,
This has led to a significant increase in orders, which means further mass production of standard modules, further promoting cost reduction and quality improvement.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] In this embodiment, a strip-shaped thin plate 2 forming a standard heat exchange module 1 in FIG. 1 has a meandering thin plate as illustrated in a partial sectional view of FIG. A thin plate heat pipe 5 incorporating a diameter tunnel heat pipe 5-1 is applied. 5-2 in FIG.
Indicates a sealed portion of the working fluid sealed in the meandering small diameter tunnel heat pipe 5-1. FIG. 5 shows an example of the heat exchange module 1 in which the thin plate heat pipe 5 is subjected to serpentine bending. Since the heat exchange module 1 is a heat pipe, the amount of heat supplied from the heat receiving / radiating module plate 3 is shown. Alternatively, the heat is transmitted to all surfaces of the serpentine shape with almost no loss, and all surfaces act as very good fins having a fin efficiency of 100%. In FIG. 5, the curvature, bending pitch, and shape of the serpentine bending portion 6 of the thin plate heat pipe 5 are standardized in all the bending portions of all the standard heat exchange modules, and the standardized curvature, bending pitch, And the same shape. Accordingly, by joining or adjoining the parallel portions 7 of the plates in the serpentine bending, the standard heat exchange module 1-1 is different from the other standard heat exchange modules 1-2.
The number of serpentine turns can be increased easily by connecting or adjoining.

FIGS. 2 and 3 show a second embodiment of the present invention.
It is also explanatory drawing which shows an Example. This embodiment is an embodiment of a practical structure of the heat exchange module 1 of the present invention. The serpentine bending structure of the strip-shaped thin plate 2 is a kind of spring structure, is easily deformed, is difficult to handle as a module, and needs to be a strong structure to handle as a heat exchange component. Therefore, the present embodiment employs a heat exchange module 1 having a structure as shown in FIGS. 2 and 3 as a practical structure. That is, both ends 8, 9 or one end 8 in the serpentine bending of the strip-shaped thin plate 2 forming the standard heat exchange module 1 are bent in the direction of the aligned serpentine bent group, and each of the serpentine bent portions 6 is bent. It is characterized in that it is thermally conductively joined to the bending outer periphery. With such a configuration, the shape of the serpentine-shaped heat exchange module 1 is fixed, and a robust module component is obtained. Such a rigid module is easy to handle, it is easy to accurately join and integrate the module with the heat receiving / radiating module plate 3, and the structure can be easily expanded by joining between the heat exchange modules. Such a strong structure also contributes to stabilization of heat exchange performance. In addition, strip-shaped thin plate 2
In the case of a thin plate heat pipe 5 as shown in FIGS. 4 and 5, the flat surfaces formed by bending the ends 8 and 9 in FIGS. 2 and 3 exhibit extremely excellent heat diffusion performance.
The heat quantity of the heat quantity supply element 4 in FIG. 1 is transmitted to all the bent portions 6 of the heat exchange module 1 uniformly and with little heat loss, and has an excellent feature of improving the heat exchange performance of the heat exchange module 1.

[Third Embodiment] In this embodiment, which is illustrated in the schematic diagrams of FIGS. 6 and 7, the parallel portions 7 between the plates in the serpentine bending of the strip-shaped thin plate 2 forming the heat exchange module 1 are opposed to each other. The present invention is characterized in that auxiliary fins 10 made of a thin ribbon that bends and meanders by thermally connecting the plate surfaces to each other are provided. This embodiment can be implemented only when the radius of curvature and the pitch of the serpentine bending of the strip-shaped thin plate 2 applied to the present invention are all formed exactly the same by standardization of the module. However, the performance of the heat exchange module 1 can be greatly improved by a large expansion of the heat exchange area by the auxiliary fins 10.

[Fourth Embodiment] FIG. 8 is a perspective view showing an example of a heat receiving / radiating module plate 3 according to a fourth embodiment of the present invention. FIG. 9 is a side view of a modular composite heat sink obtained by combining the heat receiving / radiating module plate 3 of FIG. 8 and a heat exchange module of the same type as that of FIG. The standard type heat receiving and radiating module plate 3 illustrated in FIG. 8 is a light metal thick plate having excellent thermal conductivity, and a serpentine bent portion of the heat exchanging module 1 is provided on a surface to be joined to the heat exchanging module 1. It is characterized in that a group of U-shaped grooves 11 having a cross-sectional shape capable of closely fitting the groups of 6 is formed. The U-shaped groove 11 thus formed has the following operation.
(1) The contact area of the connection portion with the heat exchange module 1 is increased, and the performance of the composite heat sink is improved. Therefore, sufficient performance can be exhibited even when an inexpensive heat conductive adhesive is used in place of expensive brazing for joining the connecting portions. (2) The heat exchanger modules 1 as shown in FIGS. 3 and 7 can be easily aligned and mounted. (3)
The heat diffusion performance in the direction of the U-shaped groove 11 is improved, and the heat diffusion performance of the heat exchange module 1 in the direction perpendicular to the U-shaped groove 11 is significantly improved in combination with the good heat diffusion performance. Therefore, the heat exchange module 1 can be actively operated even when the bonding area of the heat supply element 4 illustrated in FIG. 9 is small.

[0015]

The modularization of the composite heat sink according to the present invention significantly reduces the cost as compared with the composite heat sink of the conventional structure, and realizes the stabilization of the quality and the shortened delivery time by the mass production effect, thereby improving the user's life. Numerous effects were exhibited, such as increasing the degree of freedom in design.

[Brief description of the drawings]

FIG. 1 is a schematic side view illustrating a modularized composite heat sink of the present invention.

FIG. 2 is a perspective view illustrating an example of a standard heat exchange module applied to a second embodiment of the present invention.

FIG. 3 is a perspective view illustrating another example of the standard heat exchange module applied to the second embodiment of the present invention.

FIG. 4 is a partially sectional explanatory view of a thin plate heat pipe with a built-in meandering small-diameter tunnel heat pipe applied to a second embodiment of the present invention.

FIG. 5 is an explanatory view of an application example of a thin plate heat pipe applied to the second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing an application example of the heat exchange module according to the third embodiment of the present invention.

FIG. 7 is an explanatory diagram showing another application example of the heat exchange module of the third embodiment of the present invention.

FIG. 8 is an explanatory view showing an example of a heat receiving and radiating module plate according to a fourth embodiment of the present invention.

FIG. 9 is an explanatory view showing an application example of a heat receiving and radiating module plate according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchange module 1-1 Standard type heat exchange module 1-2 Standard type heat exchange module 2 Strip-shaped thin plate 3 Standard type heat receiving and radiating module plate 4 Heat supply element 5 Thin plate heat pipe 5-1 Meandering small diameter tunnel heat Pipe 5-2 Sealing part 6 Bending part 7 Parallel part 8 Terminal 9 Terminal 10 Auxiliary fin 11 U-shaped groove

Claims (5)

[Claims] 1. A lightweight, high-performance, modularized composite heat sink having a combined structure of a heat exchange module and a heat receiving / radiating module, formed by serpentine bending a strip-shaped thin plate having extremely good thermal conductivity at a predetermined number of bending times. One or more selected modules from among the plurality of standard type heat exchange modules, and selected modules from among a plurality of standard type heat receiving and radiating module plates that exchange heat with the heat exchange module. Wherein the composite heat sink is formed as a composite heat sink having a desired ability to receive and dissipate heat. 2. The belt-shaped thin plate forming the standard heat exchange module is a thin plate heat pipe having a meandering small-diameter tunnel heat pipe built therein. The curvature, bending pitch, and shape of the serpentine bent portion are all The modularized composite heat sink according to claim 1, wherein the curvature, bending pitch, and shape are common and standardized in all the bent portions of the standard heat exchange module. 3. The serpentine bending of the strip-shaped thin plate forming the standard type heat exchange module, both ends or one end thereof is bent in the direction of the aligned serpentine bent group, and the bent outer periphery of each serpentine bent part is bent. The modular composite heat sink of claim 1, wherein the composite heat sink is thermally conductively joined. 4. A parallel portion of the strip-shaped thin plate forming the standard heat exchange module in the serpentine bending is formed of a thin ribbon that is bent and meandered by thermally connecting the opposing plate surfaces. The modular composite heat sink of any preceding claim, wherein auxiliary fins are provided. 5. The standard type heat receiving / radiating module plate is a light metal thick plate having excellent heat conductivity, and a serpentine bent portion of the heat exchange module is densely formed on a surface to be joined to the heat exchange module. 2. The modular composite heat sink according to claim 1, wherein a U-shaped groove group having a cross-sectional shape capable of fitting is formed.