JPH06174386A - Thermal connection tape - Google Patents

Abstract

PURPOSE:To make simple and easy the thermal connection between the inside and outside of an apparatus by a method wherein the parts of straight pipe containers of long and thin heat pipes are lined up side by side in parallel and formed to be a flat-plate tape-shaped body being abundant in movability, bendability and flexibility and a prescribed part of this tape-shaped body is bonded to be integral by a bonding means being excellent in thermal conductivity. CONSTITUTION:A group of straight pipes of meandering, long and thin heat pipes 1 are bonded mutually by a bonding means being excellent in thermal conductivity, such as soldering, at the parts of the opposite terminals except turn parts 2-1 and 2-2, so as to be formed in the shape of a laminated flat plate of two layers, and a high-temperature-side bonded part 3-l as a heat-receiving part and a low-temperature- side bonded part 3-2 as a heat-radiating part are formed. A part formed of the residual parts of the grouped straight pipes is made a thermal connection part 1-2 connecting thermally the high-temperature part with the low-temperature part in an apparatus, and in this connection part 1-2, the grouped straight pipe container parts are made to have a non-bonded structure wherein they are separated from each other although lined up side by side in parallel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an application structure of a thin tube heat pipe, and more particularly to a novel application structure of a loop type thin tube heat pipe or a meandering thin tube heat pipe, in which the thin tube container group is formed in a tape shape. The present invention relates to an application structure of a thin tube heat pipe in which a high temperature part and a low temperature part are thermally connected and heat is exchanged by a simple means in which a predetermined tape-shaped part is attached to the high temperature part and the low temperature part.

[0002]

2. Description of the Related Art High temperature parts (or heat generating parts) inside and outside equipment
As an example of means for thermally connecting the low temperature part (or cooling means) spaced apart from it and exchanging the amount of heat, a separation type heat pipe (also called a separate type heat pipe) is used. is there. FIG. 5: is explanatory drawing which shows an example of a separation-type heat pipe which can be applied also in a small apparatus. In the figure, 11 and 12 are a heat receiving flat plate and a heat radiating flat plate, respectively, which are bonded to a high temperature part (or a heat generating part) and a low temperature part (or a cooling means) inside and outside the equipment by a bonding means having a low contact thermal resistance. is there. Reference numeral 13 is a loop type thin pipe heat pipe shown in a diagram for simplification of the drawing, and its heat receiving portion 13-1 and heat radiating portion 13-2 are built in and integrated with the heat receiving flat plate 1 and the heat radiating flat plate 2, respectively. It has been done. The heat insulating part 13-3 thermally connects the heat receiving flat plate 1 and the heat radiating flat plate 2. Such a loop type thin pipe heat pipe type separation type heat pipe has a smaller diameter than a normal separation type heat pipe and does not require a pump for circulating a working fluid. The size can be significantly reduced, and it can be installed relatively easily even when it is applied to a small device, and the high temperature part and low temperature part inside and outside the device are thermally connected to effectively exchange heat. It can be done.

[0003]

Since the heat pipe itself is large in the separation type heat pipe of the conventional example, the target device is large and it is difficult to apply it to a normal device. Even in the case of the separate type heat pipe applied to the small loop type thin pipe heat pipe as illustrated in FIG. 5, the heat receiving flat plate of the heat pipe as the contact surface of the bonding portion with the heat pipe at the high temperature portion and the low temperature portion and the connecting means. In addition, strict smoothness and accurate parallelism are required on the flat surface of the heat dissipation plate, and various means for reducing the contact thermal resistance are required. I could not do it.

[0004] The recent tendency toward miniaturization and complexity of equipment is
It is necessary to keep the overall temperature of the device within the allowable temperature range by letting the temperature of some protruding high-temperature heat-generating components or parts inside the device to low-temperature components or low-temperature parts inside the device. In many cases, it is necessary to thermally connect the high temperature component in the device and the inner wall surface of the housing and to discharge the amount of heat to the outside of the housing through the housing wall. Under these circumstances, the advent of means for easily and easily thermally connecting the high temperature portion and the low temperature portion inside and outside the device and exchanging the amount of heat between them is desired. The problem to be solved by the present invention is to provide means capable of simplifying and facilitating such a thermal connection between the inside and outside of a device.

[0005]

The basic structure of the means for solving the problems is that of a long thin tube heat pipe which is reciprocally meandered along the same plane to form a spiral shape or a meandering shape. The straight pipe containers are arranged in parallel and in parallel and formed into a flat tape-shaped body having high flexibility, flexibility and flexibility, and a predetermined portion of the tape-shaped body is a bonding means having good thermal conductivity. It is characterized by being integrally bonded by.

FIG. 1 is an explanatory view showing a basic structure and a first embodiment of a thermal connection tape of the present invention which is means for solving such a problem. 1 is a meandering (or spiral) long thin tube heat pipe, 2 is its turn part, and 2 is its turn part.
Parts of the straight tube container of the long thin tube heat pipe 1 except for are arranged in parallel and parallel to form a flat tape shape. The predetermined portion 3 of the tape-shaped body is bonded and integrated by a bonding means having good thermal conductivity.
Reference numeral 1 denotes a high temperature side adhesive portion, and 3-2 denotes a low temperature side adhesive portion, which are adhered to the high temperature portion and the low temperature portion inside and outside the device by predetermined means, respectively, and thermally connect them.

[0007]

The structure of the thermal connection tape thus formed is proposed by the present inventor and put into practical use.
O90 (loop type thin tube heat pipe) and JP-A-4-
251189 (micro heat pipe) is an application of the structure, and a loop structure in which both ends of the thin tube heat pipe are connected in a communicating state is an application of the structure of Japanese Patent Laid-Open No. 4-190090, and the thin tube heat pipe is a loop. If the structure is not formed on both ends and both terminals are sealed, the structure of JP-A-4-251189 is applied. Therefore, the thermal connection tape of the present invention can exert the same function and effect as the heat pipe of either of the above-mentioned Japanese Patent Laid-Open.

That is, as a first action, when both ends of the heat connecting tape are respectively adhered to a high temperature portion and a low temperature portion in the equipment, the working fluid in the flat tape heat pipe heat pipe is
While vibrating vigorously, it gently circulates in the loop to transfer the amount of heat from the high temperature part side to the low temperature part side, or due to more vibrating vibration, it transfers the heat amount from the high temperature part side to the low temperature part side only by vibration. Further, as a characteristic of the heat pipes of both of the above-mentioned patent applications, this heat transport loses its function even if it is arranged in a top heat state, regardless of the height of the position between the high temperature side and the low temperature side. Never. That is, this heat connecting tape exerts an optimum heat transport function as heat connecting means.

As a second function, since this heat connecting tape is formed by collecting thin heat pipes in parallel, it is highly flexible, bendable and flexible, and can be freely adjusted according to the gap in the equipment. It is easy to bend and easy to handle when arranging. In particular, the flexibility is extremely excellent when the outer diameter of the thin tube is 1.2 mm or less.

The third function is that the heat connecting tape is flat and has high flexibility, flexibility and flexibility, so that it can be adhered flexibly along the adhering surface of the adherend. As a result, it is possible to easily and easily adhere without requiring strict smoothness and flatness such as the heat radiation surface of the separation type heat pipe.

[0011]

【Example】

First Embodiment FIG. 1 shows the basic structure of the thermal connection tape of the present invention and also serves as an explanatory view of the first embodiment. In the figure, the straight tube parts of the meandering long thin tube heat pipe 1 are bonded to each other by a bonding means having good thermal conductivity such as solder bonding at both ends except the turn parts 2-1 and 2-2. The two layers of flat plates are laminated to form a flat plate, and a high temperature side adhesive section 3-1 as a heat receiving section and a low temperature side adhesive section 3-2 as a heat radiating section are formed. Such an adhesive portion can be easily solder-bonded to a high-temperature portion or a low-temperature portion inside the device, because of its flexibility and good adhesiveness of the solder.

A portion formed by the remaining portion of the straight pipe portion group serves as a heat connecting portion 1-2 which thermally connects the high temperature portion and the low temperature portion in the equipment, and this heat connecting portion 1- In Fig. 2, the straight pipe container parts are arranged in parallel and parallel, but are separated from each other to have a non-adhesive structure. Since the straight pipe container section group of the thermal connection section 1-2 is in a non-adhesive state, the flexibility, bendability and flexibility of the thermal connection tape are remarkably improved in this section, and along the gap in the equipment. Can be easily bent. In particular, when the thermal connection tape is formed in a double-layer structure as illustrated in the figure, the non-adhesive state between the layers in the thermal connection or between the thin tubes improves flexibility, bendability and flexibility. It is extremely effective for

The thermal connection state by the thermal connection tape configured as described above is shown in FIGS. Figure 2 (a)
In the figure, 4-1 is a heating element and 5-1 is a cooling means, which correspond to a high temperature part and a low temperature part in the device, respectively. As shown in the figure, even if the bonding surface of the high temperature portion and the bonding surface of the low temperature portion are different in position and surface direction, the thermal connection tape of this embodiment can be flexibly bent in the non-bonding portion. It shows that the faces can be easily connected. The figure also shows that the position of the heating element 4-1 is arranged higher than the position of the cooling means 5-1, and even when the heating element 4-1 is arranged in a so-called top heat state, the heat connection tape of the present invention does not transport heat. It shows that it is possible.

In FIG. 2B, a component group P- in the equipment is shown.
Heating element 4 arranged in a narrow gap between 1 and P-2
The heat quantity of -1 is carried by the meandering long thin tube heat pipe 1 configured as a heat connection tape to a spatially vacant part, and this heat quantity is used as the heat receiving plate of the heat radiation fin 5-2 as the cooling body 5-1. It shows a state in which heat is absorbed in the cooling convection 7-1. The heat connecting tape of the present invention can take out the amount of heat generated in such an extremely narrow space and thermally connect it to the heat radiating means for heat radiation cooling.

Second Embodiment FIG. 3 is an explanatory view of the second embodiment, in which (a) is a schematic side view and (b) is a schematic cross-sectional view. The heat connecting tape of the first embodiment has a two-layer structure, but the second embodiment is characterized by a single layer structure. In FIG. 3, the straight tube container parts of the meandering long thin tube heat pipe 1 are arranged in parallel and parallel in the same plane. In the case of the two-layer structure, the connecting portion needs to have a non-adhesive structure in order to improve flexibility and flexibility, but in the case of the one-layer structure of the present embodiment, all the straight pipe containers of the straight pipe container section group. Since they do not lose their flexibility, bendability and flexibility even if they are configured as a single flat tape that is adhered to each other, all of the thermal connection tapes except the turn parts 2-1 and 2-2 It is characterized in that it can be formed into a complete tape shape as an adhesive structure. Therefore, in this embodiment, the handleability at the time of arrangement is extremely good as compared with the first embodiment. However, since the number of straight pipe container parts within the same width is half that of the first embodiment, it is unavoidable that the heat transfer capacity is also halved.

Third Embodiment In the second embodiment of FIG. 3, when all the straight pipe container parts of the meandering thin pipe heat pipe constituting the heat connecting tape are bonded to each other and the bonding means is solder bonding Can be configured as an excellent heat connecting tape because of its good manufacturing workability, good adhesiveness to high temperature parts and low temperature parts in equipment, flexibility, flexibility and good flexibility. I can. However, the flows of the working fluid circulating inside the adjacent straight pipe container portions in the heat joining portion 1-2 of the heat joining tape are in opposite directions to each other, and the high temperature working fluid carries the heat quantity from the high temperature portion toward the low temperature portion. Then, the working fluid that is cooled in the low temperature portion and flows toward the high temperature portion for absorbing heat flows adjacently. Therefore, the amount of heat is exchanged between the adjacent straight pipe container parts, the working fluid that should be at high temperature loses the amount of heat during the heat transport, and the working fluid that should be at low temperature absorbs the amount of heat on the way to the high temperature portion, The heat transfer efficiency decreases.

Since the moving speed of the amount of heat in the heat connecting tape is fast, even if the straight pipe container group is adhered by an adhesive means having a good thermal conductivity such as solder, the reduction of the heat amount carrying efficiency is remarkable. However, when the thermal connection part 1-2 is short, it is not a serious problem in practical use. However, when the heat connecting portion 1-2 is long, the decrease in heat transfer efficiency due to the heat interference between the straight pipe container portions cannot be ignored, as described above. Further, since the high temperature side adhesive portion 3-1 which is the heat receiving portion is short, the working fluid circulation force is weak, that is, when the heat transport amount is very small, the function of the heat connecting tape may be caused by slight thermal interference between the straight pipe portions. Often lost.

In the third embodiment, as a means for preventing the reduction of the heat transport efficiency due to the heat interference between the straight pipe container parts as described above, the straight pipe container parts or the interlayers in the heat connection part are connected to each other. An adhesive material having a small thermal conductivity is selectively used as an adhesive material for adhesion.

Fourth Embodiment FIGS. 4 (a), (b), (c), and (d) are explanatory views of a fourth embodiment of the thermal connecting tape of the present invention. FIG. 4 (a) is a perspective view showing its structure, and the like. Is an explanatory diagram of an application example thereof. In FIG. 4 (a), the long thin tube heat pipe 1 is formed in a spiral shape, and the thin tube container groups of each turn of the spiral are all aligned in parallel and parallel to each other to form an endless flat belt shape. The thin tube container group is adhered to each other at a predetermined portion thereof. In this case, it is also a feature of this embodiment that the flat belt has a one-layer structure in all parts. Therefore, since the flexibility, bendability, and flexibility are less likely to be lost due to the adhesion between the thin tubes, the thin tubes are bonded and integrated in the entire flat belt shape in the figure. is there.

The thermal connecting tape having the above-described structure can be applied to a structure for applying a unique thermal connecting mode different from the other embodiments. As shown in FIG. 4B, if the heating element 4-1 is wound and sandwiched by the high temperature side adhesive portion 3-1 and the turn portion 2-1, and the adhesive is applied, the adhesive area is doubled. Can be sucked up. Figure 4 (C)
At the low temperature side adhesion portion 3-2, the adhesion of the straight pipe container portion group can be released, the separator thin tube 8 can be inserted and expanded as shown in the figure, and heat can be radiated by the cooling convection air 7-1.
When applied in this way, the amount of heat can be drawn from the narrow part to the part where the cooling convection air 7-1 can be used for heat dissipation. FIG. 4D shows an example in which a cylindrical heating element and a cylindrical cooling means are thermally connected. 4-2
Is a hot conduit through which the hot fluid 6 flows. 5-2 is a low temperature pipe line through which the low temperature fluid 7-2 flows. The high temperature portion and the low temperature portion can be easily and effectively thermally connected as shown by the endless belt-shaped heat connecting tape.

[0021]

As described above, the heat of the present invention formed into a tape shape by arranging the straight pipe container portions of the thin pipe heat pipe reciprocating along the same plane in parallel and in parallel and adhering to each other at predetermined portions. Since the connecting tape is highly flexible, flexible and flexible, both ends of the tape can be easily and easily adhered to the high temperature part inside the device and the low temperature part inside and outside the device to thermally connect them. . It is also possible to bond one end of the tape to a high temperature portion arranged in a narrow portion and draw the other end into a space where heat can be easily radiated. Since this tape is a meandering thin tube heat pipe, the amount of heat is actively transported from the high temperature side to the low temperature side regardless of the mounting posture according to the operating principles of JP-A-4-190090 and JP-A-4-251189.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a basic structure and a first embodiment of a thermal connection tape of the present invention.

FIG. 2 is an explanatory diagram showing a heat connection state of an application example of a heat connection tape.

FIG. 3 is an explanatory view showing a second embodiment of the thermal connection tape of the present invention.

FIG. 4 is an explanatory view showing a third embodiment of the thermal connection tape of the present invention. (A) Structural explanatory diagram (b) (c) (d) Application example explanatory diagram

FIG. 5 is an explanatory view of a conventional separation type heat pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Meandering long thin tube heat pipe 1-2 Thermal connection part 2 Turn part 3 Adhesive part 3-1 High temperature side adhesive part 3-2 Low temperature side adhesive part 4-1 Heating element 4-2 High temperature pipe line 5-1 Cooling means 5 -2 low temperature pipe 6 high temperature fluid 7-1 cooling convection wind 7-2 low temperature fluid P parts group 11 heat receiving flat plate 12 heat radiating flat plate 13-1 heat receiving part of loop type thin tube heat pipe 13-2 heat radiating part of loop type thin tube heat pipe 13-3 Heat insulation part of loop type thin tube heat pipe

[Procedure amendment]

[Submission date] December 8, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art High temperature parts (or heat generating parts) inside and outside equipment
As an example of means for thermally connecting the low temperature part (or cooling means) spaced apart from it and exchanging the amount of heat, a separation type heat pipe (also called a separate type heat pipe) is used. is there. FIG. 8 is an explanatory diagram showing an example of a separation type heat pipe that can be applied to a small device. In the figure, 11 and 12 are a heat receiving flat plate and a heat radiating flat plate, respectively, which are bonded to a high temperature part (or a heat generating part) and a low temperature part (or a cooling means) inside and outside the equipment by a bonding means having a low contact thermal resistance. is there. Reference numeral 13 is a loop type thin pipe heat pipe shown in a diagram for simplification of the drawing, and its heat receiving portion 13-1 and heat radiating portion 13-2 are built in and integrated with the heat receiving flat plate 1 and the heat radiating flat plate 2, respectively. It has been done. The heat insulating part 13-3 thermally connects the heat receiving flat plate 1 and the heat radiating flat plate 2. Such a loop type thin pipe heat pipe type separation type heat pipe has a smaller diameter than a normal separation type heat pipe, and a pump for circulating a working fluid is not required. The size can be significantly reduced, and it can be installed relatively easily even when it is applied to a small device, and the high temperature part and low temperature part inside and outside the device are thermally connected to effectively exchange heat. It can be done.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

[0003]

Since the heat pipe itself is large in the separation type heat pipe of the conventional example, the target device is large and it is difficult to apply it to a normal device. Even in the case of the separate type heat pipe applied to the small loop type thin pipe heat pipe as shown in FIG. 8, the heat receiving flat plate of the heat pipe as the contact surface of the bonding portion with the heat pipe at the high temperature portion and the low temperature portion and the connecting means. In addition, strict smoothness and accurate parallelism are required on the flat surface of the heat dissipation plate, and various means for reducing the contact thermal resistance are required. I could not do it.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Fourth Embodiment FIG. 4, FIG. 5, FIG. 6 and FIG. 7 show the fourth embodiment of the thermal connection tape of the present invention .
FIG. 4 is an explanatory view of an embodiment, FIG . 4 is a perspective view showing its structure, and the other is an explanatory view of its application example. In FIG. 4, the long thin tube heat pipe 1 is formed in a spiral shape, and the thin tube container groups of each turn of the spiral are all arranged in parallel and in parallel to form an endless flat belt shape. The thin tube container group is characterized by being adhered to each other at a predetermined portion. In this case, it is also a feature of this embodiment that the flat belt has a one-layer structure in all parts. Therefore, since the flexibility, bendability, and flexibility are less likely to be lost due to the adhesion between the thin tubes, the thin tubes are bonded and integrated in the entire flat belt shape in the figure. is there.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

The thermal connecting tape having the above-described structure can be applied to a structure for applying a unique thermal connecting mode different from the other embodiments. As shown in Fig. 5 , high temperature side adhesive section 3-1
Also, if the heating element 4-1 is wound and sandwiched by the turn portion 2-1, and the adhesive is applied, the adhesive area is doubled, so that the heat can be absorbed more strongly than in the other embodiments. FIG. 6 shows the low-temperature side adhesion section 3-2 in which the adhesion of the straight pipe container section group is released,
It is possible to insert the separator thin tube 8 and expand it as shown in the figure to radiate heat by the cooling convection air 7-1. When applied in this way, the amount of heat is reduced from the narrow part to the cooling convection air 7-
1 can be drawn to the usable part to dissipate heat. FIG. 7 shows an example in which a cylindrical heating element and a cylindrical cooling means are thermally connected. 4-2 is a high temperature pipe line through which the high temperature fluid 6 flows. 5-2 is a low temperature pipe line through which the low temperature fluid 7-2 flows. The high temperature portion and the low temperature portion can be easily and effectively thermally connected as shown by the endless belt-shaped heat connecting tape.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is an explanatory view showing a basic structure of a thermal connection tape of the present invention and a first embodiment.

FIG. 2 is an explanatory diagram showing a heat connection state of an application example of a heat connection tape.

FIG. 3 is an explanatory view showing a second embodiment of the thermal connection tape of the present invention.

FIG. 4 is a structure showing a third embodiment of the thermal connection tape of the present invention.
FIG.

FIG. 5: Application showing a third embodiment of the thermal connection tape of the present invention
It is an example explanatory view.

FIG. 6 is an application showing a third embodiment of the thermal connection tape of the present invention.
It is an example explanatory view.

FIG. 7: Application showing a third embodiment of the thermal connection tape of the present invention
It is an example explanatory view.

FIG. 8 is an explanatory view of a conventional separation type heat pipe.

[Procedure correction 6]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 4]

[Figure 5]

[Figure 7]

[Figure 3]

[Figure 6]

[Figure 8]

Claims (4)

[Claims] 1. A straight tube container portion of a long thin tube heat pipe, which is formed in a spiral shape or a meandering shape by reciprocatingly meandering along the same plane, is arranged in parallel and in parallel and is highly flexible. A thermal connection tape, which is formed into a flat tape-shaped body, and a predetermined portion of the tape-shaped body is bonded and integrated by a predetermined bonding means. 2. The heat connection tape according to claim 1, wherein the straight tube container portion of the long thin tube heat pipe that reciprocates and meanders in the same plane is formed in a flat plate tape shape. 3. The structure of the thermal connection tape comprises: an adhesive part that is thermally joined to each of the high temperature part and the low temperature part in the equipment; and a thermal connection part that thermally connects the high temperature part and the low temperature part. Becomes
In the straight pipe container part group of the long thin pipe heat pipe in the heat connection portion, each straight pipe container is mutually bonded, or in the case of a two-layer structure, the respective layers are bonded to each other,
The thermal bonding tape according to claim 1, wherein the adhesive material is an adhesive material having a low thermal conductivity. 4. The long thin tube heat pipe is formed in a spiral shape, and the thin tube container groups of each turn of the spiral are all arranged in parallel and in parallel, and formed as an endless flat belt shape as a whole. The thermal connection tape according to claim 1, wherein the thin tube container group is adhered to each other in a predetermined portion.