JP5046967B2 - Heat transfer tube forming method and structure thereof - Google Patents

Description

  The present invention relates to a heat conducting tube forming method and its structure. In particular, the present invention relates to a method for manufacturing a heat conducting tube having high heat conducting performance.

  As the number of transistors per unit area of an electronic component increases, the thermal energy generated during the operation also increases. In addition, since the operating frequency of electronic components is becoming higher and higher, the amount of heat (Switch Loss) generated by ON / OFF switching during transistor operation is also one of the main causes of the increase in heat generation of electronic components. In recent years, due to the rapid development of the semiconductor manufacturing process and IC encapsulation technology, the calculation speed of the chip has also increased significantly. Correspondingly, when the chip is operating, the thermal energy increases as the clock frequency increases. If these amounts of heat are not properly processed, the chip calculation speed is reduced, and if it is severe, the life of the chip is also affected.

A known method for manufacturing a heat conducting tube includes at least the following steps.
First, a heat transfer tube is provided, and the heat transfer tube is made of any material having an excellent heat conduction coefficient, and a molded bar is inserted into the heat transfer tube, so that a space between the tube wall of the heat transfer tube and the molded bar is inserted. A space with a fixed gap is formed. Subsequently, the copper powder is filled, and the copper powder is filled into the gap space between the conduit tube wall and the molding rod. Thereafter, in order to form a capillary structure, a method such as sintering, adhesion, filling, and deposition is performed, and then a step of separating the molded bar and the conduit is performed. Further, after that, the working liquid is injected and the vacuum operation is performed. After the opposite end of the conduit is sealed, the manufacturing process of the heat conducting tube is completed.
As shown in FIGS. 1 and 2, which are a three-dimensional exploded view and a combination diagram of a known heat dissipation module, the heat dissipation module 1 includes a heat dissipation fin set 11 and at least one heat conducting tube 12. The heat dissipating fin set 11 includes a plurality of heat dissipating fins 111 and a base 112. The heat dissipating fins 111 engage with each other and are welded to one surface of the base 112. In addition, at least one hole 113 is formed on the fin body, and the hole 113 is formed by the heat conducting tube 12.
On the base 112, a concave tub can be installed at a position where the heat dissipating fin 111 is welded, or a coupling hole can be installed on the base, whereby the heat conducting tube 12 is drilled. The heat conduction tube is in a known bay tube or U tube configuration (not described in detail here), and a combination of the above constitutes a known heat dissipation module.

When performing heat dissipation, the known heat dissipating module 1 is in close contact with the flat heat source 14 at the bottom of the base 112, conducts the heat source generated by the heat source, and further transmits the heat source to the heat dissipating fins through the heat conducting tube. Perform the operation. However, since all the heat sources are first conducted on the base 112 and later conducted to the heat conducting tube 12, the heat conducting tube 12 cannot be in direct contact with the heat generating source 14 from the viewpoint of design. In addition, when the heat dissipating parts are coupled to each other, the phenomenon of gap generation forms a thermal resistance phenomenon, and the heat conduction coefficient is greatly reduced.
The disadvantages of the known techniques are summarized below.
1. Production cost is high.
2. The coupling between heat dissipating parts is unstable and gaps are likely to occur.
3. There is a problem of thermal resistance.
4. Production efficiency is low because parts must be assembled individually after production.
The solution of the problems and drawbacks of the known structure is the aim of the inventor and related companies.
Japanese Patent Laid-Open No. 11-162417 Japanese Patent Laid-Open No. 9-326459

In view of the above-mentioned drawbacks, the inventor repeatedly evaluated and considered in various fields, made use of his many years of experience in the industry, continuously repeated trial production and correction, and finally arrived at the present invention and succeeded.
The first problem to be solved by the present invention is to provide a heat conducting tube molding method and a structure thereof capable of processing a heat conducting tube that can directly conduct the heat source by contacting the heat conducting tube directly with the heat source. The second problem to be solved by the invention is to provide a heat transfer tube molding method and its structure capable of greatly improving the heat dissipation performance as compared with known heat transfer tubes.

In order to solve the above problems, the present invention provides the following heat transfer tube forming method and the structure thereof.
First, a heat conducting tube having a necessary length is cut, and the cut length includes a sealed end, a contact portion, and a sealed portion, and a capillary structure is implemented in the sealed portion and the sealed end. One end of the inside is a sealed tube, a working fluid is added to perform a vacuum operation, the opposite end is then sealed, and the portion is thus completed as a heat conducting tube structure, and then the contact portion is divided into several parts in the axial direction, Each of the cut portions is formed outwardly as a folded contact portion, whereby the contact portion acquires a larger contact area and directly contacts or couples with the heat generation source, so that the heat source is directly connected to the heat transfer tube body from the contact portion. Conducted, can achieve the functions of thermal energy conduction and heat dissipation.

That is, the invention of claim 1 is a heat conducting tube forming method, wherein the heat conducting tube forming method includes the following steps, the heat conducting tube is cut into a certain length according to the user's needs, and the length is the sealed end and Including at least one contact part and a sealing part, respectively sealing the opening of the sealing end and the tube tube at the position of the sealing part to form a complete heat-conducting tube, and then cutting the contact part in the axial direction, The contact portion is formed, and a heat conducting tube that has a larger contact area and can be in direct contact with the heat source is configured.
According to a second aspect of the present invention, in the heat conducting tube forming method according to the first aspect, the plurality of formed contact portions can be folded.
According to a third aspect of the present invention, in the heat transfer tube molding method according to the first aspect, the plurality of contact portions formed can be folded outward to form a cross or other flowering shapes.

According to a fourth aspect of the present invention, in the heat transfer tube structure, the heat transfer tube of the heat transfer tube structure has at least one end as a flat contact portion, the contact portion is cut in the axial direction into a plurality of equal parts, It is characterized by being brought into contact and achieving a heat conduction effect.

  As described above, according to the heat-conducting tube molding method and the structure of the heat-conducting tube of the present invention, direct contact with the heat source is possible, so that when used as a heat source such as an electronic component, the thermal resistance is reduced. , Can save space and achieve cost savings. In addition, it is convenient for assembly and has the advantage of high heat dissipation effect.

In order to achieve the above objects and functions, the technical means and structure employed by the present invention will be described below with reference to the drawings and the detailed description of the preferred embodiments of the present invention, and the features and functions thereof.
As shown in FIG. 3 which is a process instruction diagram of the heat conducting tube forming method according to the embodiment of the present invention, the heat conducting tube forming method according to the embodiment of the present invention includes at least the following steps (31 to 35). Process the tube.
In step 31, a heat conducting tube to be molded is prepared (see FIG. 4).
In step 32, the sheet is cut into a certain length as required by the user (see FIG. 5).
At this time, the heat conducting tube A to be molded is cut into the heat conducting tube material A1 to be processed according to the needs of the user. The heat conducting tube A1 to be processed constitutes a blocking end 43, a blocking portion 42, and a contact portion 41.
In step 33, the opening of the blocking end 43 and the tube tub at the position of the blocking portion are blocked to form a heat conducting tube (see FIG. 5).
On the heat conducting tube A1 to be processed, after determining the required length of the necessary sealed end 43, the opening of the sealed end 43 and the tube rod at the position of the sealed portion 42 are respectively sealed to constitute the heat conducting tube 4. (Of course, a capillary structure is already installed in the tube, filled with a working fluid, and a vacuum operation is performed. Since it belongs to a known technique, it will not be described in detail).
In step 34, the contact portion can be selectively compressed and flattened (see FIG. 7).
The contact portion 41 is compressed and flattened to increase the contact area of the contact portion 41, and thus heat can be derived from the heat source faster.
In step 35, the blocking portion is folded into a bay, and the heat conducting tube is L-shaped (see FIG. 8).
By making the closed end 43 fold about 90 degrees and making the heat conducting tube 4 L-shaped, the contact portion 41 and the heat source 5 are in direct contact with each other so that the heat source can be conducted.

  As shown in FIGS. 9, 10, and 11, in another application example, the tube rod of the contact portion 41 of the heat conducting tube 4 can be cut in the axial direction and divided into a plurality of equal parts (see FIG. 9). Although the figure is in quadrants, it can be in six equal parts, eight equal parts or more. After cutting, the cut portion is folded outward and the contact portion 41 is shaped like a radial cross (see FIG. 10). By deploying the contact portion 41 in the form of a radiant cross, the contact area at the time of contact between the contact portion 41 and the heat source 5 can be increased, and thus installed directly on the heat source 5. (See FIG. 11), direct conduction of the heat source can be performed. Thus, the conduction of the heat source becomes smoother and faster.

  Still another embodiment of the present invention will be described with reference to FIG. 12. After the contact portion 41 is cut into a plurality of equal parts in the axial direction, the plurality of contact parts 41 are in direct contact with a large number of heat sources 5. Then, the heat source can be transferred to the sealed end 43 through the contact portion 41 to achieve the effect of heat dissipation.

As described above, in each of the embodiments of the present invention, a sealed end, a sealed portion, and a contact portion are formed on the heat conducting tube material to be processed, and the opening of the sealed end and the tube cage at the sealed portion position are respectively sealed. Construct a complete heat-conducting tube, flatten the end and bond it to the heat source, or cut it in the axial direction on the tube tube of the contact portion and divide it into multiple equal parts, Fold and radiate, expand the contact area when contacting the heat source and contact the heat source. Therefore, each optimum embodiment of the present invention described above has the following advantages and performance.
1. Regardless of other heat dissipating parts, it can be in direct contact with the heat source and conducted directly through the heat source.
2. Thermal resistance is reduced.
3. Parts can be saved and cost can be saved.
4. Easy assembly and high production efficiency.
The above is only an optimum embodiment of the present invention and does not limit the present invention. Modifications based on the concept of the present invention, conversion to shapes or installation forms performed within a range not departing from the spirit of the present invention, various changes, modifications and applications that produce equivalent effects are all included in the patent scope of the present invention. Shall be.

It is a three-dimensional exploded view of a known technology heat dissipation module. It is a three-dimensional combination diagram of a known technology heat dissipation module. It is process instruction | indication figure of the heat conducting tube shaping | molding method of the optimal Example of this invention. It is a three-dimensional view of the heat conducting tube of the optimum embodiment of the present invention. It is a heat guide tube processing instruction figure of the optimal example of the present invention. It is a heat guide tube processing instruction figure of the optimal example of the present invention. It is a heat guide tube processing instruction figure of the optimal example of the present invention. It is a heat conduction tube application figure of the optimal example of the present invention. It is a shaping | molding instruction | indication figure of another optimal Example of this invention. It is a shaping | molding instruction | indication figure of another optimal Example of this invention. It is an application instruction diagram of another optimum embodiment of the present invention. It is an application instruction | indication figure of another optimal embodiment of this invention.

Explanation of symbols

A Molded heat transfer tube
A1 Heat conducting tube material to be processed
1 Heat dissipation module
11 Heat dissipation fin assembly
111 Heat dissipation fin
112 base
113 holes
12 Heat transfer tube
14 Heat source
4 Heat transfer tube
41 Contact area
42 Blockade
43 Blockade Edge
5 Heat source

Claims (4)

The heat transfer tube forming method includes the following steps:
Cutting the heat conducting tube into a certain length as required by the user, the length including a sealed end and at least one contact portion and a sealed portion;
Each of the opening of the blocking end and the tube tub at the position of the blocking portion are respectively closed to form a complete heat conducting tube;
Thereafter, the contact portion is cut in the axial direction to form a plurality of contact portions, and the heat transfer tube forming method is characterized in that a heat transfer tube having a larger contact area and capable of being in direct contact with the heat generation source is formed.   The heat conducting tube forming method according to claim 1, wherein the plurality of formed contact portions can be folded.   2. The heat conducting tube forming method according to claim 1, wherein the plurality of contact portions formed can be folded outward to form a cross shape or other flowering shape. The heat-conducting tube having the structure of the heat-conducting tube is characterized in that at least one end is formed into a flat contact portion, and the contact portion is cut in the axial direction to be divided into a plurality of portions and brought into contact with a heat source to achieve a heat-conducting effect. Heat transfer tube structure.

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