JP2001241870A - Small-diameter tunnel plate heat pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably reduce the cost of a small-diameter tunnel plate heat pipe and to put the peculiar function of the heat pipe to practical use by effectively utilizing an inexpensive ribbon-like plate obtained by extrusion molding a light-weight soft metal and having a group of small-diameter through tunnels. SOLUTION: This tough ribbon-like heat plate containing small-diameter meandering tunnels is constituted by sealing both end faces of a long plate having a group of small-diameter through tunnels and, at the same time, cutting off parts of inter-tunnel partition walls from the surface side of the plate, and then, successively making a hydraulic fluid to freely flow through the spaces among adjacent tunnels by means of a means which closes the opening by welding. Consequently, the plate heat plate is released from the structural restriction imposed on the plate by the size of the indispensable manufacturing device and a ribbon-like heat pipe having an almost limitless length can be obtained. In addition, a large-area plate heat pipe and a flexible heat pipe can be obtained by combining long heat pipes with each other. Moreover, a light-weight, small- size, and highly functional self-cooling type coil can also be constituted.

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 ribbon-shaped plate heat pipe for heat diffusion or heat transport and its application, and particularly to the effective use of a ribbon-shaped metal plate having a group of through tunnels in the plate. The present invention relates to a structure of a ribbon-shaped plate heat pipe including a loop-shaped meandering small-diameter tunnel tote heat pipe and its application.

[0002]

2. Description of the Related Art As a result of the development of various thin tube heat pipes, plate heat pipes for heat diffusion and heat transport, which are formed by holding a group of thin tube heat pipes in parallel between metal plates, have begun to be used. . In particular, Japanese Patent Publication No. 6-3354 (loop-type thin-tube heat pipe), Japanese Patent Application Laid-Open No. 4-190090 (loop-type thin-tube heat pipe), Japanese Patent Application Laid-Open No. 4-251189 (micro-heat pipe), etc. By applying, the plate heat pipe has been reduced in thickness and weight down to several millimeters. However, with the rapid progress of semiconductor elements in recent years and the rapid progress of miniaturization of heating elements and miniaturization and weight reduction of equipment, plate heat pipes are required to be further thinner, lighter, and higher in performance. Was.

[0003] The present inventor has responded to such a demand and has filed Japanese Patent Application No. 5-2.
No. 41918 (plate type heat pipe) was invented and put into practical use. The configuration of the thin plate heat pipe is such that a predetermined number of thin metal plates are laminated and joined, and in the thin plate heat pipe, the thin metal plate is formed in advance on the laminated joint surface of the thin metal plates constituting the thin plate heat pipe. A predetermined number of thin layers of the small-diameter tunnel heat pipe meandering on the same plane are formed by the formed meandering narrow groove, and the small-diameter tunnel heat pipe has a meandering pattern similar to the meandering thin-tube heat pipe. Is configured as a loop type meandering small diameter tunnel heat pipe or a non-loop type meandering small diameter tunnel heat pipe, and the circular equivalent inner diameter of the small diameter tunnel is sufficiently reduced, so that it is enclosed in the tunnel. The heat pipe working fluid is always closed in the tunnel due to its surface tension and cohesive force, and the closed state is maintained regardless of the holding posture. The working fluid circulates or vibrates in the axial direction of the tunnel, and the nucleate boiling pressure wave of the working fluid in the heat receiving portion of such a meandering small-diameter tunnel heat pipe causes the working fluid to circulate or vibrate. Is to be transported efficiently. The plate heat pipe with such a configuration has a heat transfer performance by reducing the contact thermal resistance between the small diameter tunnel and the plate to zero.
In all respects, such as heat diffusion performance, characteristics in top heat mode, etc., it is superior to plate heat pipes applied to meandering thin tube heat pipes.Furthermore, small diameter tunnels are regarded as thin tubes with zero wall thickness and bending of meandering turns Because the radius can be reduced to a minimum, a plate heat pipe that is much thinner and lighter than a plate heat pipe applied to a meandering thin tube heat pipe can be constructed. That is, the thickness of the plate heat pipe can be reduced to 4 mm or less by setting the circular converted inner diameter of the small diameter tunnel to a small diameter of 2 mm or less. This value is a value close to the maximum, and it is possible to make the inside diameter of the tunnel 0.3 mm and the thickness of the plate heat pipe as thin as 0.5 mm or less.

[0004]

The lamination bonding between the metal sheets for manufacturing such a thin plate heat pipe is performed by applying a hard brazing method or a diffusion bonding method. However, such lamination requires a large vacuum furnace, such as brazing in a vacuum furnace, brazing in an atmosphere furnace, and diffusion bonding in a high vacuum furnace. A pressing jig or an in-furnace pressing device has been indispensable. Due to these, the size of the plate heat pipe is limited by itself, and the maximum is about 1 m x 1 m in the case of a plate, and the length is about 2 m even in the case of a ribbon-like plate having a width of about 100 mm. It was limited to. Furthermore, the conventional plate heat pipe has great restrictions on the size of the NC milling machine in cutting the tunnel pattern on the plate lamination surface in the process before lamination and bonding, and on the size of various devices in the photolithography process of the tunnel pattern. Accordingly, the increase in size and length has been hindered from this point as well.

A thin plate heat pipe is disclosed in Japanese Unexamined Patent Publication No.
No. 90090 (Loop-type thin tube heat pipe)
Since it is an application such as -251189 (micro heat pipe), it should be possible to manufacture a coil for electromagnetic equipment by applying it as a winding for electromagnetic equipment in the same way as these, but because of its length limitation, Application as a winding was impossible.

FIGS. 17 and 18 are explanatory views showing the structure of the conventional thin plate heat pipe 21 as described above. FIG. 17 is a plan view thereof, and FIG. 18 is a sectional side view thereof. Reference numeral 21-1 denotes a first thin plate,
In FIG. 3, a meandering long narrow groove 22-1 is cut. The second thin plate 21-2 is a simple flat plate,
The two plates 21-1 and 21-2 are joined by a predetermined means on the lamination surface 23, and a meandering long tunnel is formed at the boundary surface. A predetermined working fluid is sealed in the closed tunnel to form a loop-shaped meandering small-diameter tunnel heat pipe.

The present invention fundamentally improves the structure and manufacturing method of the above-mentioned thin plate heat pipe, solves the problems, enables the manufacture of a long, large-area plate heat pipe, and expands the field of application. At the very least, it also enables the manufacture of coils for electromagnetic equipment.

[0008]

SUMMARY OF THE INVENTION Recent advances in metal extrusion techniques have enabled the extrusion of ribbon-shaped metal plates having a large number of small diameter through tunnels. In particular, the technology of extrusion of aluminum-based alloys, pure aluminum, and magnesium-based alloys has been remarkably advanced, and a plate having a thickness of 2 mm or less having dozens of through tunnels having an inner diameter of about 1 mm has also been successfully extruded. Since this molding is an extrusion molding of a flexible metal, a long molding of several tens of meters or more is easy, and it is estimated that a long molding of several hundred meters will be possible depending on future development. The present invention is to form a ribbon-shaped plate heat pipe by effectively utilizing a ribbon-shaped plate formed by extrusion of such a lightweight flexible metal and having a plurality of parallel small-diameter through tunnel groups. FIG. 2 is a perspective view of a ribbon-shaped plate having such a group of through-tunnels, where 1 is a ribbon-shaped plate having a group of small-diameter through-tunnels, 2-1, 2-2, 2-3 and 2-n. 3 shows a small diameter through tunnel.

FIG. 1 is a partially sectional plan view showing a ribbon-shaped plate heat pipe constructed by effectively utilizing the lightweight flexible ribbon-shaped plate as described above, and showing a basic structure of the present invention. A large number of parallel through tunnel groups 2-1 and 2-2,
At both ends of the ribbon-shaped metal plate 1 on which 2-3 and 2-n are formed, both ends of the tunnel group are welded and sealed by predetermined means 3, and one end of each tunnel is sealed. In a portion adjacent to the part, a U-turn is formed by being connected and connected to one end of the next adjacent tunnel by a predetermined means (cutting off a partition between adjacent tunnels). The other terminals are U-turned at a portion near the sealing portion by being connected and connected to each other by a predetermined means similar to one terminal of the next next tunnel which is further adjacent, and such means are sequentially turned on. Repeatedly, the tunnel group is formed as a continuous long meandering small-diameter tunnel. The long tunnel is a meandering small-diameter tunnel container in which a predetermined amount of a predetermined working fluid is sealed and refilled. It is configured as down-like plate heat pipe.

It is important that the above-mentioned predetermined welding sealing means at both ends of the tunnel group is a welding sealing means for completely filling the portion from both ends of the tunnel group to a predetermined depth. There are features. The welding sealing means may be a brazing welding means to the group of tunnel mouths, a welding means in which the group of tunnel mouths are crushed and welded, or a penetration through the edge where the group of tunnel mouths are aligned. Either the edge of the ribbon-shaped metal plate without the group of tunnels or the edge of the short piece thereof is a butt-welded welding means; Each of the means is a welding means in which a sufficient amount of molten metal generated by welding is completely filled and closed in the tunnel from the end of the tunnel to a predetermined depth as shown in 3-2 and welded. According to these means, the end portion of the ribbon-shaped plate heat pipe has a strong structure composed of an integral metal block. Such hermetic sealing means enhances the mechanical strength of both ends of the ribbon-shaped plate heat pipe, which must sometimes be subjected to severe handling, and significantly improves its reliability. Further, when the working fluid becomes hot or the working fluid has a high saturated vapor pressure, the most vulnerable parts of the ribbon-shaped plate heat pipe with respect to the internal pressure due to the high-pressure steam are both ends thereof, and the present invention The terminal hermetically sealing means also completely guarantees the pressure resistance against such a condition.

FIGS. 3, 4, and 5 show the terminal structure of the ribbon-shaped plate heat pipe according to the present invention, respectively. As an essential condition, it is necessary to have a structure in which the mechanical strength is enhanced as described above, and at the same time, to guarantee perfect airtightness with respect to the vapor pressure of the working fluid while maintaining high reliability. FIG. 3 shows a terminal structure by soldering. 3-1
Reference numeral 3-2 denotes a brazing filler portion of the penetration tunnel. FIG. 4 shows a terminal structure in which crushing of the plate terminal and soldering are used together. 4-1 is a crushed weld, 4-
Numeral 2 is a filler material filling portion of the through tunnel. FIG. 5 shows a terminal structure by butt welding with a ribbon-shaped metal plate. 6 is a ribbon-shaped metal plate, 5-1 is a butt welding portion, and 5-2 is a brazing filler material filling portion of the through tunnel.

A structure other than the present invention as shown in FIG. 8 is also conceivable as a terminal welding sealing means for a plate heat pipe to which a plate having a group of through tunnels is applied. That is, the excision of the partition wall excision section 1-2 is performed from the end side (the end of the partition wall), and after the excision, the metal ribbon 1-6 is welded and hermetically sealed. In the case of this structure, it is necessary to suppress the generation amount of the molten metal so that the molten metal does not block the partition wall cut-out portion 1-2. Since the welding area is significantly reduced, there is a disadvantage that the mechanical strength of the terminal sealing portion is reduced and the reliability is significantly deteriorated.

In the present invention, the partition wall 1-1 is partially cut off at a predetermined position as shown in the drawing to form a partition wall cut-out portion 1-2 as a means for connecting and connecting adjacent tunnels as a means for turning the tunnel into a U-turn. And implement it. There are various kinds of means for partition wall resection. The simplest example is a means for cutting the partition wall from the surface of the ribbon-like plate at a predetermined position near the end of the tunnel partition wall and then sealing the mouth of the opening of the hole by welding. Although this means is simple, it is not possible to visually check the partition walls, so that means for ensuring the perforation position is required.

Both the terminal structure of the ribbon-shaped plate heat pipe and the structure of the turn part for meandering the tunnel group need not be brazed in a furnace using a vacuum furnace or an atmosphere furnace. It can also be carried out by ordinary AC TIG welding, welding by argon arc or brazing. In contrast to the conventional plate heat pipe, which forms a highly airtight small-diameter tunnel container by laminating and bonding plates, the ribbon-shaped plate has a structure in which a highly airtight tunnel group is formed in advance. The bonding between the ribbon-shaped plate heat pipes should be performed safely even if hard brazing or soft brazing is performed in the normal atmosphere, without impairing the airtightness of the tunnel. Can be.

[0015] As described above, the ribbon-shaped plate heat pipe can be formed to a required length sufficiently long, the end formation does not need to be brazed in the furnace, and the bonding between the ribbon-shaped plate heat pipes can be performed in the furnace. Since middle brazing is not required, it is possible to manufacture a large plate heat pipe having a length of 6 m and a width of 1 m and a long ribbon-shaped plate heat pipe having a length of 50 m. Compared with the conventional plate heat pipe, the size and length of the furnace and the size of the meandering groove and photo-etching equipment make it impossible to increase the size and length of the plate heat pipe. I was

The ribbon-shaped plate having a group of through tunnels has a tunnel inner diameter of 0.8 mm and a ribbon thickness of 1.5 mm.
Since it can be formed into a thin shape as described above, many embodiments utilizing its flexibility, light weight and the like can be considered.

[0017]

[First Embodiment] The present embodiment is an embodiment for easily and surely cutting a partition wall as a means for turning a tunnel in a U-turn in the present invention. FIG. 6 is an explanatory plan view of the first embodiment, and is a partial cross-sectional view for clearly showing the cut-out portion of the partition wall. FIG. 7 is a sectional view orthogonal to the tunnel in FIG. In the present embodiment, a shallow groove 1-4 that is substantially perpendicular to the longitudinal edge is cut and formed at a position separated by a predetermined distance from both ends of a ribbon-shaped metal plate having a group of tunnels in advance. 4 is a depth not reaching the wall surface where the thin film is left on the tunnel wall surface, and the thickness of the remaining thin film 1-6 is determined by touching or visually checking the partition wall 1-.
The thickness is sufficiently thin so that the position of No. 1 can be confirmed. The width of the shallow groove 1-4 is sufficiently larger than the length of the partition wall cutout 1-2. The partition wall cutting portion 1-2 is formed by cutting off a part of the thin film from the bottom surface of the shallow groove 1-4 and drilling the cutting hole 1-7, and at the same time, removing a predetermined portion of the partition wall to the tunnel bottom wall surface. Thereafter, a filling metal tape 1-5 having a width and a thickness that fits into the shallow groove is inserted into the shallow groove 1-4 by welding and filled with the shallow groove. At the same time, the cutting hole 1 of the remaining thin film 1-6
-7 is hermetically sealed to complete a meandering small diameter tunnel container. In the first embodiment, the remaining thin film 1
-6 has a very important function, greatly increases the welding contact area between the shallow groove 1-4 and the filling metal tape 1-5, and improves the reliability of hermetic sealing with the filling metal tape 1-5. In addition, the position of the partition can be reliably confirmed by touching the finger or visually, and the partition wall resection operation can be facilitated. In FIG. 6, reference numeral 3-1 denotes a welded sealing portion formed by soldering.
Reference numeral 2 denotes a brazing filler material filling portion of the tunnel, and the terminal sealing portion formed by these components has the basic structure of the present invention as described in FIG.

[Second Embodiment] The present invention is to form a ribbon-shaped plate heat pipe by processing a through tunnel of a ribbon-shaped metal plate having a large number of small-diameter through tunnels into a meandering small-diameter tunnel. However, each of the above embodiments is a ribbon-shaped plate heat pipe incorporating a non-loop type meandering small-diameter tunnel heat pipe, and is disclosed only in Japanese Patent Application Laid-Open No. Hei 4-251189 (micro heat pipe) among various basic patents of the present invention. It is just an application of In this embodiment, the range of application is expanded, and a loop-shaped meandering small-diameter tunnel heat pipe is an application of Japanese Patent Publication No. 6-3354 (loop-type thin-tube heat pipe) and Japanese Patent Application Laid-Open No. 4-190090 (loop-type thin-tube heat pipe). Is to constitute a ribbon-shaped plate heat pipe.

FIG. 9 is an explanatory view showing such a second embodiment, which is partially shown in a sectional view. In addition, in the figure, most of the tunnels are omitted and only four tunnels are shown for easy understanding of the turn state of the tunnel group. The material metal constituting the ribbon-shaped metal plate 1 having the through-tunnel groups 2-1, 2-2, 2-3, 2-n is a metal having a melting point sufficiently lower than that of pure copper. The outer periphery is coated with a thick metal plating of the same metal as the material metal to form a composite metal thin tube 7-1. Two positions corresponding to both ends of the meandering small diameter tunnel in the ribbon-shaped plate heat pipe are provided at two positions. Through holes 8-1 and 8-2 reaching the inner wall of the tunnel from the outer wall of the plate are drilled, and both ends of the above-described composite metal thin tube 7-1 are inserted into the two through holes 8, respectively, so as to be airtight. Brazing or welding 8-3, 8-4
Have been. Since the through-hole 8 and the composite metal thin tube 7 are made of exactly the same material, their brazing or welding is a highly reliable joint.

With this configuration, the meandering small-diameter tunnel is formed in a loop shape, and is configured as a loop-shaped meandering small-diameter tunnel container. This configuration is applied to Japanese Patent Application Laid-Open No. 4-190090 (loop-type thin-tube heat pipe).
No. 3354 (loop-type thin tube heat pipe) is applied, and a ribbon-shaped plate heat pipe having a variety of functions and a wider application range is constructed. In addition, since this connecting thin tube exposed to the outside of the plate is easily affected by impact or bending due to external force, the connecting thin tube whose basic material is pure copper is more suitable as a connecting thin tube because it is more resistant to these external forces than other metal thin tubes. ing. The present embodiment has been proposed in view of the above.

The present embodiment is not necessarily limited to a ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

[Third Embodiment] FIG. 9 also serves as an explanatory diagram of the third embodiment. The third embodiment is an embodiment showing the configuration of the working fluid injection thin tube of the ribbon-shaped plate heat pipe of the present invention. Penetrating tunnel group 2-1, 2-2, 2-3,
The material metal forming the ribbon-shaped metal plate 1 having 2-n is a metal having a melting point sufficiently lower than that of pure copper, and the outer periphery of a pure copper thin tube of a predetermined length is coated with a thick plating of the same metal as this material metal. At the predetermined position of the ribbon-shaped plate heat pipe, a through hole 8-5 is formed from the outer wall of the plate to reach the inner wall of the tunnel. One end is inserted and airtightly brazed or welded 8-6, and the other end of the composite metal thin tube is made to protrude from the ribbon-shaped plate heat pipe by a predetermined length. It is configured to be applied as a working fluid injection capillary 12 for sealing. Since the joining surfaces of the brazing and welding of the through hole 8 and the working fluid injection capillary 12 are made of exactly the same material, the joining between them is extremely reliable.

The vapor pressure of the working fluid in the plate heat pipe has the strongest effect on the end of the tunnel. It is necessary that the capillary tube 12 for hydraulic fluid injection always withstand this large internal pressure during injection of the hydraulic fluid and during operation of the plate heat pipe. Pure copper tubing is the most suitable material as an injection tubing because the inner wall of the tubing is pressed very effectively by "caulking" or crushing and the joining force is extremely tough. Pure copper tubing is also very flexible, so that there is almost no risk of cracking or breakage during "caulking" or crushing. Further, in the case of a structure in which the working fluid injection thin tube has to be exposed to the outside, such as the present plate heat pipe, it is extremely desirable to apply a pure copper thin tube which is flexible against external force and free from cracks or breakage. The present embodiment in which a pure copper thin tube is applied as a basic material has been conceived in view of these.

The present embodiment is not necessarily limited to a ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

Fourth Embodiment FIG. 10 is a perspective view showing a fourth embodiment of the present invention, and a part is shown in a sectional view.
In this embodiment, a plurality of ribbon-shaped plate heat pipes are welded in parallel and parallel to each other, or a plurality of ribbon-shaped plate heat pipes 1-a arranged in parallel and parallel.
Ribbon-shaped metal plates 9-1, 9 which do not incorporate a tunnel group between 1-b, 1-c, 1-n and are provided with a ribbon-shaped plate heat pipe attaching means as required.
-2 and 9-3 are mixedly arranged and welded in parallel and parallel to each other and in a plane, or are configured as a wide plate heat pipe by any of the above means, and a ribbon constituting a main part thereof The plate-shaped heat pipe may have a built-in meandering small-diameter tunnel heat pipe having at least 20 turns in one or more strips, or a clam built in each of a plurality of ribbon-shaped plate heat pipes. The terminal of the tunnel container of the row thin-diameter tunnel heat pipe is provided with predetermined means 7-1, 7-2, 7-3, 7
-N and are connected to each other by at least 20
It is characterized by being configured as a meandering small-diameter tunnel heat pipe having more turns than turns.

It is empirically known that the meandering thin-tube heat pipe is desirably provided with at least 20 turns as the meandering turn of the thin-tube container in order to sufficiently exhibit the characteristic that does not depend on the holding posture. Have been. Therefore, the same phenomenon occurs in the meandering small-diameter tunnel heat pipe incorporated in the plate heat pipe, which is an application thereof. The characteristic that does not depend on the holding posture is caused by the fact that a large number of heat receiving parts are provided in a single meandering tunnel, and the pressure waves of nucleate boiling generated simultaneously in many heat receiving parts are mutually amplified. The effect is exhibited by the action, and the amplification action is effective when there are at least 20 heat receiving portions, that is, it is desired that the number of turns is 20 or more. According to our experience, when the number of turns exceeds 80 turns, there is no difference in performance between the bottom heat mode and the top heat mode in a normal plate heat pipe.

When mass-producing the ribbon-shaped plate heat pipe of the present invention, it is necessary to keep a ribbon-shaped metal plate having various numbers of through-tunnels in stock and to combine them to form a wide-width plate heat pipe. Therefore, it is not economical to stock only a ribbon-shaped metal plate having 20 or more through tunnels per sheet. This embodiment is devised to economically manufacture a high-performance plate heat pipe even in such a case. The connecting thin tube 7 in FIG. 10 is merely an example of a connecting means, and there is also a means for connecting by a connecting tunnel provided between adjacent ribbon-shaped metal plates.

In many cases, a plate heat pipe requires a mounting hole for a plate when applied. In such a case, the ribbon-shaped plate heat pipe mounting means 10-1
The structure shown in FIG. 10 in which the ribbon-shaped metal plates 9-1, 9-2, and 9-3 provided with 10-2 and 10-n are arranged in a mixed manner is convenient for mounting application.

The present embodiment is not necessarily limited to the ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

[Fifth Embodiment] FIG. 11 is an explanatory diagram of the fifth embodiment. Multiple ribbon-shaped plate heat pipes 1
-A, 1-b, 1-c, 1-n are arranged in parallel and parallel to each other and are adhered to each other in a flat plate shape to form a wide-width plate heat pipe. The wide plate heat pipe is formed by spot welding or spot brazing at a predetermined pitch as in the case of the welded portion 11, and the entire width of the plate heat pipe is configured as “interdigital”, and the ribbon constituting the “interdigital” plate heat pipe is formed. The ends of the tunnel container of the meandering small-diameter tunnel heat pipe incorporated in each of the plate heat pipes 1-a, 1-b, 1-c and 1-n are provided with predetermined means 7-1, 7-2 and 7-3. Are connected to each other to form a single meandering small-diameter tunnel heat pipe having at least 20 turns or more.

In the case of a plate heat pipe for the purpose of heat transport, flexibility is often required. In such a case, a thin ribbon-shaped plate heat pipe with a small number of through tunnels and a narrow width, that is, a plurality of flexible and flexible ribbon-shaped plate pipes each having a “border shape” as shown in the figure. It is advisable to use a connected plate heat pipe. In the plate heat pipe configured as described above, since the individual ribbon-shaped plate heat pipes are highly flexible in the three-dimensional direction, the plate heat pipes can conduct heat even if the target heat exchanger is three-dimensionally uneven. It can be adhered in a good condition. In addition, since the "interdigital" plate heat pipe of this embodiment is extremely flexible and highly flexible, it is easy to transport the calorific value to the target position by sewing through the gap between the mounted components having a complicated arrangement in the device. .

In such a case, since the individual ribbon-shaped plate pipes have a small number of meandering turns of the small-diameter tunnel and the performance is reduced, the connecting means (the connecting thin tube in the figure) 7-
1, 7-2 and 7-3 make it possible to make the entire small-diameter tunnel into a single tunnel. By increasing the number of turns to at least 20 turns, high performance is achieved and the performance depends on the attitude. Sex can be reduced.

The present embodiment is not necessarily limited to the ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

Sixth Embodiment FIG. 12 is an explanatory view of a sixth embodiment which is another embodiment as a highly flexible plate heat pipe, and is shown in a schematic sectional view. In the figure, ribbon-shaped plate heat pipes 1-a, 1-b, 1-
c, 1-d are arranged in parallel and parallel to each other with a predetermined gap therebetween, and are formed on one surface of a thin flexible metal plate 14 formed on a plane wider than a plane formed by their outer edges. All of them are bonded by welding or brazing, so that the contact area with the heat exchanger to be applied is enlarged, and the predetermined gap is a ribbon-like shape where fillets 15 generated by welding or brazing are adjacent to each other. This is a gap where the flexibility is not lost by being connected to the fillet 15 of the plate heat pipe. A predetermined portion other than the welded portion is attached to the ribbon-shaped plate heat pipe mounting means 10- if necessary. 1, 10-2 are provided.

Although the flexibility of this plate heat pipe is not as good as that of a "blind" plate heat pipe,
The flexibility in the direction perpendicular to the axial direction of each ribbon-shaped plate heat pipe is excellent. In addition, the surface smoothness of the bonding surface, which plays an important role in thermal conductivity, is superior to that of the “interdigital” plate heat pipe. The ribbon-shaped plate heat pipes 1-a, 1-
Another important purpose of the structure of this embodiment in which b, 1-c, 1-d are arranged in parallel and bonded by welding or brazing is to improve surface smoothness. Since the ribbon-shaped plate heat pipe is formed by extrusion using a press, it is inevitable that the thickness and width of the heat pipe have a large processing error as compared with the rolling. Further, since it is formed of a flexible metal, it is excellent in flexibility, but it is inevitable that bending and unevenness occur in a measuring and cutting step, an end face processing step, and other secondary processing steps. Therefore, when these are bonded to each other to form a wide plate heat pipe, it is often difficult to apply them to applications requiring strict surface smoothness. In such a case, the present embodiment, in which the ribbon-shaped plate heat pipes are aligned and adhered to one surface of the flexible metal plate 14 having good smoothness as in this embodiment, has a very excellent surface smoothness. A wide plate heat pipe having a surface can be provided.

Also in this plate heat pipe, since the number of meandering turns of the meandering small-diameter tunnel heat pipe built in each ribbon-shaped plate heat pipe is small and high performance cannot be expected, the connecting thin tubes 7-1, 7-2,. According to 7-3, the meandering small-diameter tunnel heat pipes included in each ribbon-shaped plate heat pipe are connected to each other and are configured as a single tunnel heat pipe.
Zero or more turns are provided to ensure a high performance meandering small diameter tunnel heat pipe. In this embodiment, when the width of each ribbon-shaped plate heat pipe is wide and at least 20 turns or more are given to the meandering small diameter tunnel, the connecting thin tube 7 is used.
-1, 7-2, and 7-3 may be omitted.

This plate heat pipe has a "blind shape".
Unlike a plate heat pipe, it cannot exhibit the flexibility corresponding to a three-dimensional uneven surface, but a better adhesive surface can be obtained corresponding to a two-dimensional curved surface, and heat can be transported efficiently. It is better than a "blinded" plate heat pipe in that it can do.

The present embodiment is not necessarily limited to the ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

[Seventh Embodiment] When connecting a ribbon-shaped metal plate having a group of through-tunnels to each other by welding or brazing to lengthen the small-diameter tunnel group, the diameter of each group is too small. It is easy to lose its function by being blocked, and it is extremely difficult to make it longer. The seventh embodiment is an embodiment for surely and easily performing such a difficult welding connection. FIG. 13 is a cross-sectional explanatory view showing a structure of a connection portion of a tunnel in the welding connection portion, and is a long ribbon-like metal plate in which a ribbon-like metal plate having a plurality of through tunnel groups is connected by brazing or welding. The connections of all the tunnels at the connections of the metal plate are formed in a structure as illustrated in FIG. 13 and are welded or brazed while preventing molten metal from flowing into the small diameter tunnel. In the figure, reference numeral 13 denotes a welding connection part or a brazing connection part. At the connection portion of the tunnel group of the ribbon-shaped metal plate, each of all the tunnels is made of a metal having a melting point higher than that of the material metal of the ribbon-shaped metal plate and having no fear of generating electrolytic corrosion with the material metal. A short thin connecting thin tube 16 is fitted and inserted across both plates,
Each of the ribbon-shaped metal plates 1-a and 1-b is formed by welding and connecting the groups of connecting thin tubes 16 in a state of being interposed in the group of tunnels. Since the connecting tubule 16 does not melt at the melting point of the material metal of the plate, if the connecting tubule 16 is closely fitted in the tunnel, the molten metal may flow into the tunnel and block the tunnel. Absent. In order to improve the connection reliability of the connecting thin tube portion, plating of the same material metal as that of the ribbon-shaped metal plate is performed in advance, so that the connecting thin tube 16 is welded or brazed at the connection of the ribbon-shaped metal plate. The connection reliability is greatly improved because not only the fitting is performed but also the brazing or welding is performed integrally with the plate. By using such a ribbon-shaped metal plate, the ribbon-shaped plate heat pipe can be several tens of meters, and if necessary, several hundreds.
m can be formed.

This embodiment is not necessarily limited to the ribbon-shaped plate heat pipe having the same structure as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

[Eighth Embodiment] Since the ribbon-shaped plate heat pipe of the present invention can be configured to be long, Japanese Patent Publication No. 6-3354 filed and put to practical use by the inventor (loop-type thin tube heat pipe). JP-A-4-190090 (loop-type thin tube heat pipe), JP-A-4-25118
As in No. 9 (micro heat pipe) etc., it is possible to form a self-cooling type electromagnetic device coil that forms a winding for electromagnetic devices, transports the Joule heat generated by itself to the radiator, and cools itself. I can do it.

FIGS. 14 and 15 are explanatory diagrams of the eighth and ninth embodiments. FIG. 14 is a sectional view of a winding for an electromagnetic device of the present invention, and FIG. 15 is a schematic perspective view of a coil for an electromagnetic device configured by applying the same. In FIG. 14, 1 is a ribbon-shaped plate heat pipe configured as a winding for electromagnetic equipment, 2 is a meandering small-diameter tunnel, and 17 is a heat-resistant electrical insulating coating. In FIG. 15, 1 is a ribbon-shaped plate heat pipe of the present invention configured as a coil for electromagnetic equipment,
Reference numeral 20 denotes an iron core, 19 denotes a water-cooled cooling jacket which is an example of cooling means, 19-1 denotes an inlet of cooling water, and 19-2 denotes an outlet of cooling water.

The ribbon-shaped plate having a group of tunnels formed by extrusion molding is formed by using a lightweight soft metal material that is easy to extrude, and is extremely flexible. It can be carried out with good workability at the time of winding work in the case of construction. Also, an extremely lightweight coil for an electromagnetic device can be configured.

Further, when a normal meandering thin tube heat pipe is configured as a coil for electromagnetic equipment, the thin tube heat pipe only has one built-in tunnel heat pipe and cannot operate as it is, and exhibits self-cooling characteristics. Can not. A large number of heat receiving portions and a large number of heat radiating portions are provided for the first time by installing the cooling means 19, and pressure waves due to nucleate boiling generated in the heat receiving portion are mutually amplified to function as a high-performance meandering thin tube heat pipe. Demonstrate. On the other hand, the ribbon-shaped plate heat pipe of the present invention incorporates a multi-turn tunnel heat pipe as it is, operates as a meandering thin tube heat pipe, and exerts a temperature equalizing action in the coil. Therefore, the function when the cooling means 19 is mounted can exhibit higher performance than the coil constituted by the ordinary meandering thin tube heat pipe.
Therefore, the ribbon-shaped plate heat pipe of the present embodiment has a large number of meandering small-diameter tunnels built-in by widening, and a wide-width electromagnetic device winding capable of exhibiting the performance as a heat pipe alone. It is more effective to be configured as

The winding for an electromagnetic device of the present embodiment can exhibit a greater effect by reducing the thickness, which is one of the other features of the ribbon-shaped plate heat pipe, in addition to increasing the width. The winding of the conventional thin tube heat pipe type electromagnetic device has a larger inner diameter (tunnel 1) than the tunnel of this embodiment.
Book only) and could not be thinned. As the first effect of the thinning, the reduction in the number of winding turns due to the widening is complemented by the thinning, so that the same number of turns can be maintained. The second effect is that the heat receiving and radiating area is enlarged, and the heat absorbing and radiating effects are increased. That is, examples of the increase in the heat absorbing and dissipating effect include an increase in heat radiation performance due to an increase in the area of heat exchange with the cooling means 19 and an increase in the self-cooling function of the entire coil due to the active exchange of heat between coil layers.

The present embodiment is not necessarily limited to the ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

[Ninth Embodiment] The predetermined both-end welding sealing means is welding sealing means by butt welding connection with a ribbon-shaped metal plate having no through-tunnel group, and the entire surface of the ribbon-shaped plate heat pipe 1. Is provided with a thin heat-resistant electrical insulating coating 17 and is formed as a winding for an electromagnetic device, thereby constituting a coil for an electromagnetic device, which is also connected as a double-end welding sealing means. The ribbon-shaped metal plate is the lead wire 18 of the coil for electromagnetic equipment.
Has been applied as In the winding of the coil for electromagnetic equipment, it is the end of the coil that receives the most severe external force,
This is the root of the lead wire 18 on the coil side. At the end of the coil winding operation, a force is applied to this portion to tighten it, and the lead wire 18 is connected to the power supply means after being repeatedly bent at this portion. Therefore, this part is required to have the highest toughness in the entire winding of the electromagnetic device. The end structure of the ribbon-shaped plate heat pipe 1 of the present invention is an extremely tough structure in which the molten metal is filled into the inside of the small diameter tunnel group 2 and solidified, blocked and joined. Strength is given. Since the lead wire 18 of the present embodiment also has this strong terminal structure, it has a sufficient strength required as a lead wire.

This embodiment is not necessarily limited to a ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

Tenth Embodiment In the eighth embodiment and the ninth embodiment, the ribbon-shaped plate heat pipe applied to the winding for the electromagnetic device constituting the coil for the electromagnetic device has the number of turns of the coil. When the number of tunnels is sufficiently large, the built-in tunnel group does not necessarily have to be configured as a single meandering small-diameter tunnel. Since the number of winding turns of the coil is the number of meandering turns of the meandering small-diameter tunnel, if the number of turns of the coil is at least 20 turns or more, the straight tunnel built in the ribbon-shaped plate heat pipe is used as a meandering small-diameter tunnel. Function can be fully exhibited. In other words, a ribbon-shaped plate having a large number of through-tunnels is provided with a heat-resistant electrical insulation coating on both ends of which are welded and sealed without applying a means to make each tunnel U-turn, and applied as a winding for electromagnetic equipment. You can do it. In that case, the coil exhibits the same effect as when a number of meandering thin-tube heat pipes are wound in parallel. In the case of such a configuration, arranging a large number of capillary tubes for the working fluid and repeating the working fluid sealing operation many times greatly impairs the practicality of the present embodiment.

The tenth embodiment is an embodiment in which a practical measure is taken, and FIG. 16 is an explanatory sectional view of the tenth embodiment. The figure shows the cross-sectional structure of the countermeasure implementation portion at a position close to both terminals or one terminal of the tunnel group. In the figure, all tunnels 2-1, 2-2, 2-
3, 2-n are connected to each other through a single thin and small diameter connecting tunnel 12-1 which penetrates and connects them. The small diameter connecting tunnel is perforated from the side edge of the plate, and passes through each small diameter tunnel partition wall to connect the tunnels. In the figure, the small-diameter connecting tunnel 12-1 is formed integrally with the working-fluid injecting thin tube 12, but they may be provided separately. The hydraulic fluid can be simultaneously injected into all the tunnels through the connection tunnel 12-1.

In the ribbon-shaped plate heat pipe,
Since the means for making each tunnel U-turn partially cuts and removes half of the partition wall between adjacent tunnels, the mechanical strength of that portion is inevitably reduced. Also, in the welding operation for sealing the opening of the perforation for cutting removal, it is necessary to pay close attention to the operation so as not to generate a blockage in the meandering small diameter tunnel. Since the connecting tunnel of this embodiment has a small diameter, the mechanical strength of the perforated portion is not reduced. In addition, there is no danger of closing the small-diameter tunnel at the time of welding and sealing the injection narrow tube portion. As a result, the manufacturing time of the winding for the electromagnetic device in this embodiment is significantly shortened, the cost is reduced, and operation errors are less likely to occur as compared with the eighth and ninth embodiments, so that the reliability is remarkably improved.

The present embodiment is not necessarily limited to the ribbon-shaped plate heat pipe having the same configuration as the present invention. Even if the various functions are slightly reduced, the present invention can be applied to all the ribbon-shaped plate heat pipes constituted by the ribbon-shaped plates having the group of through tunnels.

[0053]

According to the present invention, both ends of the ribbon-shaped plate having a group of small through-diameter tunnels are welded and sealed, and at the same time, at a position close to the sealing portion, a partition wall at a portion close to each tunnel end is semi-automated. By cutting by means, all the independent tunnel groups can be changed into a single meandering small diameter tunnel, and can be easily configured as a ribbon-shaped plate containing a meandering small diameter tunnel container.

Unlike a conventional plate heat pipe plate in which a plurality of thin plates are laminated and bonded to form a built-in tunnel type plate, a ribbon-shaped plate having a group of small through-diameter tunnels is formed by extrusion molding. Therefore, it has an integrated structure without any seams, and can be manufactured all at once in one process. Therefore, the material cost of semi-manufactured parts is 1 /
The cost will be reduced to 10 or less.

The ribbon-shaped plate heat pipe of the present invention can be used for a high-cost brazing process in a high-vacuum furnace, which is indispensable for a conventional plate heat pipe.
Similarly, since a high-cost meandering narrow groove cutting step, an etching step, and the like are omitted, the manufacturing cost can be reduced to a fraction of the conventional rate.

Since it is manufactured by extrusion molding, not only can a long product be molded, but the molded product does not need to be brazed in a furnace.
Since they can be connected to each other relatively easily in a normal atmosphere by brazing or welding, the size of a vacuum furnace for laminating and bonding, the size of a serpentine narrow groove cutting device for forming a tunnel pattern, etc. , And it is possible to form a very long ribbon-shaped plate heat pipe of several tens of meters or more, and to form a very large-area plate heat pipe by parallel and parallel bonding.

Further, the long and flexible ribbon-shaped plate heat pipe forms a coil for an electromagnetic device in the same manner as a conventional meandering thin tube heat pipe, and significantly reduces the weight of various stationary and rotating electromagnetic devices. And it can contribute to miniaturization.

The ribbon-shaped plate heat pipe of the present invention, which is inexpensive and has high performance, can be applied to various heat sinks, various heat exchangers, etc. like the conventional meandering thin tube heat pipe, and contributes to weight reduction and low cost. Significantly expand the market for serpentine heat pipes.

[Brief description of the drawings]

FIG. 1 is a plan view showing a basic structure of a ribbon-shaped plate heat pipe of the present invention, and is an explanatory view showing a partial cross section.

FIG. 2 is a perspective view showing a structure of a ribbon-shaped plate having a group of through tunnels, which is a component of the ribbon-shaped plate heat pipe of the present invention.

FIG. 3 is an explanatory view showing an example of a structure of a terminal portion in the basic structure of the ribbon-shaped plate heat pipe of the present invention, and is partially shown in a sectional view.

FIG. 4 is an explanatory view showing another example of the structure of the terminal portion in the basic structure of the ribbon-shaped plate heat pipe of the present invention, and is a partial cross-sectional view.

FIG. 5 is an explanatory view showing another example of the structure of the terminal portion in the basic structure of the ribbon-shaped plate heat pipe of the present invention, and is shown in a partial cross-sectional view.

FIG. 6 is a partial explanatory view of the first embodiment of the ribbon-shaped plate heat pipe of the present invention, which is partially shown in a sectional view.

FIG. 7 is a partially enlarged sectional view of the first embodiment of the ribbon-shaped plate heat pipe of the present invention.

FIG. 8 is a reference explanatory view showing an example of a structure other than the present invention of a terminal portion of the ribbon-shaped plate heat pipe, and is partially shown in a sectional view.

FIG. 9 is an explanatory view of a second embodiment and a third embodiment of the ribbon-shaped plate heat pipe of the present invention, and is partially shown in a sectional view.

FIG. 10 is an explanatory view of a fourth embodiment of the ribbon-shaped plate heat pipe of the present invention, which is shown in a perspective view.

FIG. 11 is an explanatory view of a fifth embodiment of the ribbon-shaped plate heat pipe of the present invention, which is shown in a plan view.

FIG. 12 is an explanatory view of a sixth embodiment of the ribbon-shaped plate heat pipe of the present invention, which is shown in a schematic sectional view.

FIG. 13 is an explanatory view of a seventh embodiment of the ribbon-shaped plate heat pipe of the present invention, which is shown in a partial cross-sectional view.

FIG. 14 is a cross-sectional view of a winding for an electromagnetic device, which is a component of the eighth and ninth embodiments of the ribbon-shaped plate heat pipe of the present invention.

FIG. 15 is an explanatory view and a perspective view of an eighth embodiment and a ninth embodiment of the ribbon-shaped plate heat pipe of the present invention.

FIG. 16 is a sectional view showing a tenth embodiment of the ribbon-shaped plate heat pipe of the present invention.

FIG. 17 is a partial cross-sectional plan view showing a structure of a conventional thin plate heat pipe.

FIG. 18 is a cross-sectional view showing a structure of a conventional thin plate heat pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ribbon-shaped metal plate 1-1 Tunnel partition 1-2 Partition cutout 1-4 Shallow groove 1-5 Filling metal tape 1-6 Remaining thin film 1-7 Cutting hole 1-8 Metal ribbon for sealing 2 Meandering small diameter tunnel 2-1 Penetration tunnel 2-n Penetration tunnel 3 Welding sealing part 3-1 Filling welding part 3-2 Filling part for brazing material 4-1 Crushing welding part 4-2 Filling part for brazing material 5-1 Butt welding part 5- 2 Filling material for brazing material 6 Ribbon-shaped metal plate 7-1 Composite metal thin tube (connection thin tube) 7-n Composite metal thin tube (connection thin tube) 8-1 Through hole 8-2 Through hole 8-3 Weld portion 8-4 Weld portion 9 Non-return valve 10-1 Attaching means 10-2 Attaching means 11 Brazing part (welding part) 12 Hydraulic fluid injection thin tube 12-1 Micro small diameter connection tunnel 13 Welding connection part 14 Thin flexible metal plate 15 Weld fillet 16 Connection Pipe 17 Heat-resistant electrical insulation coating 18 Lead wire 19 Water-cooled cooling jacket 20 Iron core 21 Thin plate heat pipe 21-1 First thin plate 21-2 Second thin plate 22-1 Meandering long narrow groove 23 Stacking surface

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[Procedure amendment]

[Submission date] December 26, 2000 (200.12.
26)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[ Title of the Invention] Small diameter tunnel plate heat pipe

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to Plate heat pipes for use or heat transport thermal diffusion, constructed by effectively utilizing the Rukin genus plate having a through-tunnel group especially a plate, Small diameter tunnel plate heat pump
About ip .

[0002]

2. Description of the Related Art As a result of the development of various thin tube heat pipes, plate heat pipes for heat diffusion and heat transport, which are formed by holding a group of thin tube heat pipes in parallel between metal plates, have begun to be used. . In particular, Japanese Patent Publication No. 6-3354 (loop-type thin-tube heat pipe), Japanese Patent Application Laid-Open No. 4-190090 (loop-type thin-tube heat pipe), Japanese Patent Application Laid-Open No. 4-251189 (micro-heat pipe), etc. By applying, the plate heat pipe has been reduced in thickness and weight down to several millimeters. However, with the rapid progress of semiconductor elements in recent years and the rapid progress of miniaturization of heating elements and miniaturization and weight reduction of equipment, plate heat pipes are required to be further thinner, lighter, and higher in performance. Was.

[0003] The present inventor has responded to such a demand and has filed Japanese Patent Application No. 5-2.
No. 41918 (plate type heat pipe) was invented and put into practical use. The configuration of the thin plate heat pipe is such that a predetermined number of thin metal plates are laminated and joined, and in the thin plate heat pipe, the thin metal plate is formed in advance on the laminated joint surface of the thin metal plates constituting the thin plate heat pipe. A predetermined number of thin layers of the small-diameter tunnel heat pipe meandering on the same plane are formed by the formed meandering narrow groove, and the small-diameter tunnel heat pipe has a meandering pattern similar to the meandering thin-tube heat pipe. Is configured as a loop type meandering small diameter tunnel heat pipe or a non-loop type meandering small diameter tunnel heat pipe, and the circular equivalent inner diameter of the small diameter tunnel is sufficiently reduced, so that it is enclosed in the tunnel. The heat pipe working fluid is always closed in the tunnel due to its surface tension and cohesive force, and the closed state is maintained regardless of the holding posture. The working fluid circulates or vibrates in the axial direction of the tunnel, and the nucleate boiling pressure wave of the working fluid in the heat receiving portion of such a meandering small-diameter tunnel heat pipe causes the working fluid to circulate or vibrate. Is to be transported efficiently. The plate heat pipe with such a configuration has a heat transfer performance by reducing the contact thermal resistance between the small diameter tunnel and the plate to zero.
In all respects, such as heat diffusion performance, characteristics in top heat mode, etc., it is superior to plate heat pipes applied to meandering thin tube heat pipes.Furthermore, small diameter tunnels are regarded as thin tubes with zero wall thickness and bending of meandering turns Because the radius can be reduced to a minimum, a plate heat pipe that is much thinner and lighter than a plate heat pipe applied to a meandering thin tube heat pipe can be constructed. That is, the thickness of the plate heat pipe can be reduced to 4 mm or less by setting the circular converted inner diameter of the small diameter tunnel to a small diameter of 2 mm or less. This value is a value close to the maximum, and it is possible to make the inside diameter of the tunnel 0.3 mm and the thickness of the plate heat pipe as thin as 0.5 mm or less.

[0004]

The lamination bonding between the metal sheets for manufacturing such a thin plate heat pipe is performed by applying a hard brazing method or a diffusion bonding method. However, such lamination requires a large vacuum furnace, such as brazing in a vacuum furnace, brazing in an atmosphere furnace, and diffusion bonding in a high vacuum furnace. A pressing jig or an in-furnace pressing device has been indispensable. Due to these, the size of the plate heat pipe is limited by itself, and the maximum is about 1 m × 1 m for a plate, and the length is limited to about 2 m even for a plate about 100 mm in width Was to be done. Furthermore, the conventional plate heat pipe has great restrictions on the size of the NC milling machine in cutting the tunnel pattern on the plate lamination surface in the process before lamination and bonding, and on the size of various devices in the photolithography process of the tunnel pattern. Accordingly, the increase in size and length has been hindered from this point as well.

A thin plate heat pipe is disclosed in Japanese Unexamined Patent Publication No.
No. 90090 (Loop-type thin tube heat pipe)
Since it is an application such as -251189 (micro heat pipe), it should be possible to manufacture a coil for electromagnetic equipment by applying it as a winding for electromagnetic equipment in the same way as these, but because of its length limitation, Application as a winding was impossible.

FIGS. 8 and 9 are explanatory views showing the structure of the conventional thin plate heat pipe 21 as described above. FIG. 8 is a plan view and FIG. 9 is a side sectional view. 21
Reference numeral -1 denotes a first thin plate having a meandering long and narrow groove 22-1 cut in the laminated surface 23. The second thin plate 21-2 is a mere flat plate, and is joined by a predetermined means on the laminated surfaces 23 of the two plates 21-1 and 21-2 to form a meandering long tunnel at the boundary surface. is there. A predetermined working fluid is sealed in the closed tunnel to form a loop-shaped meandering small-diameter tunnel heat pipe.

The present invention solves the above problems by fundamentally improving the manufacturing and structure of the above-mentioned thin plate heat pipe,
It enables the manufacture of long, large-area plate-type heat pipes, expands applicable fields, and also enables the manufacture of coils for electromagnetic devices.

[0008]

Means for Solving the Problems To solve the above problems,
Therefore, the small-diameter tunnel plate heat pipe of the present invention
Has multiple parallel small diameter tunnels filled with a predetermined amount of fluid
A small-diameter tunnel plate, the working fluid
Close the narrow tunnel by tension and transport heat
Plate type heat pipe, wherein the small diameter tunnel
Metal plate is light like aluminum or magnesium metal
Flexible metal and the small diameter tunnel is extruded
And the mouth of the small diameter tunnel is crushed.
And the ends of the tunnels, which are sealed by welding and are adjacent to each other
At the end, the parts close to the weld seal are mutually
Is connected and connected to

The present invention has the following effects. (1) Adjacent tunnel terminals are connected to each other
Easy to connect small diameter tunnel plate heat pipe
Can be configured. (2) The plate having the small diameter tunnel is extruded.
It has a seamless integrated structure because it is molded
It is manufactured all at once in one process. Therefore, this is
As a semi-manufactured component material
The cost can be greatly reduced. (3) The conventional plate-type heat pipe is indispensable
The high-cost high-vacuum furnace brazing process that did not come
Manufacturing costs can be significantly reduced
You. (4) Plates with small diameter tunnels are extruded
Since it can be molded into a long length, the molded product requires brazing in a furnace.
And relatively easily solder the molded products together in the normal atmosphere
Or because it can be connected by welding,
The size of the vacuum furnace for forming
Eliminates restrictions due to the size of the groove cutting device, etc.
Constructs an extremely long, small-diameter plate heat pipe of m or more
Can also be achieved by parallel bonding
Large area small-diameter plate heat pipe can be configured
It will work. (5) thin tunnel terminal portion integral from become robust structure formed of a metal block, the harsh handling forced thin plate heat pipe end end of the machine according to the time
By increasing the mechanical strength, the reliability is significantly improved
Confuse. Also, the working fluid becomes hot or the saturated vapor pressure is high.
When using hydraulic fluid, the internal pressure due to high-pressure steam
The weakest part of the small diameter plate heat pipe is both
Terminal, the small-diameter plate heat pipe of the present invention
The withstand voltage reliability in such a state is completely guaranteed. (6) A plurality of highly airtight parallel tunnels are formed in advance
Because of the structure that has been formed, between small-diameter plate heat pipes
Bonding of hard brazing or soft brazing in normal atmosphere
Even if brazing is performed, the airtightness of the tunnel is damaged.
No bonding between individual small-diameter plate heat pipes
Can be implemented safely.

[0010]

DETAILED DESCRIPTION OF THE INVENTION Recent advances in metal extrusion technology have enabled the extrusion of ribbon-like metal plates having a large number of small diameter through-tunnels. In particular, the technology of extrusion of aluminum-based alloys, pure aluminum, and magnesium-based alloys has been remarkably advanced, and a plate having a thickness of 2 mm or less having several tens of through tunnels having an inner diameter of about 1 mm has been successfully extruded. Since this molding is an extrusion molding of a flexible metal, a long molding of several tens of meters or more is easy, and it is estimated that a long molding of several hundred meters will be possible depending on future development. The present invention constitutes a plate-type heat pipe by effectively utilizing a plate formed by extrusion of such a lightweight flexible metal and having a plurality of parallel small-diameter through-tunnel groups. FIG. 2 is a perspective view of a plate having such a group of through tunnels, where 1 is a plate having a group of small diameter through tunnels, 2-1, 2-2, 2-3,.
2-n indicates a small-diameter through tunnel.

FIG. 1 shows a plate-type heat pipe constructed by effectively utilizing the above-mentioned lightweight flexible ribbon-like plate, and is a plan view of a partial cross section showing a preferred embodiment of the present invention. A large number of parallel through tunnel groups 2-1 and 2
Metal plate 1 on which -2, 2-3 and 2-n are formed
In both terminals, both terminals of the tunnel group are connected to the predetermined means 3
In addition, one end of each tunnel is mutually connected to one end of the next adjacent tunnel by a predetermined means (cutting off a partition between adjacent tunnels) at a portion adjacent to the sealing portion. Is connected to
The other end of the next next tunnel is turned on and interconnected by a predetermined means similar to one end of the next next tunnel at a portion near the sealing portion, thereby making the U By turning, such means are sequentially repeated, and the tunnel group is formed as a continuous long meandering small-diameter tunnel, and the long tunnel serves as a meandering small-diameter tunnel container and has a predetermined amount of a predetermined amount of hydraulic fluid. Is enclosed to form a small-diameter tunnel plate heat pipe.

It is important that the predetermined welding sealing means at both ends of the tunnel group is a welding sealing means for completely and completely filling a portion from both ends of the tunnel group to a predetermined depth. There are features. The welding sealing means may be a brazing welding means to the group of tunnel mouths, a welding means in which the group of tunnel mouths are crushed and welded, or a penetration through the edge where the group of tunnel mouths are aligned. Either the edge of the ribbon-shaped metal plate having no group of tunnels or the edge of the short piece thereof is a butt-welded welding means. According to these means, the end portion of the plate heat pipe has a strong structure made of an integral metal block. Such a sealing means increases the mechanical strength of both ends of the plate heat pipe, which sometimes has to be subjected to severe handling,
It significantly improves its reliability. Further, when the working fluid becomes high temperature or the working fluid has a high saturated vapor pressure, the most vulnerable parts of the plate heat pipe with respect to the internal pressure due to the high-pressure steam are both terminals, and the terminals of the present embodiment are The hermetic sealing means also completely guarantees the pressure resistance against such a condition.

FIG . 3 shows a plate heat pump according to this embodiment.
3 shows the terminal structure of IP. As an essential condition, it is necessary to have a structure in which the mechanical strength is enhanced as described above, and at the same time, to guarantee perfect airtightness with respect to the vapor pressure of the working fluid while maintaining high reliability. Figure 3 shows a plate terminal
1 shows a terminal structure in which crushing of a joint and soldering are used together. 4
-1 is the crush welded part, 4-2 is the filler metal filling of the penetration tunnel
Part.

[0014] The terminal welding sealing means of a plate heat pipe to which a plate having a group of through tunnels is applied is shown in FIG.
Structures other than such illustrative of the present invention to 6 is also conceivable. That is, the excision of the partition wall excision section 1-2 is performed from the end side (the end of the partition wall), and after the excision, the metal ribbon 1-6 is welded and hermetically sealed. In the case of this structure, it is necessary to suppress the generation amount of the molten metal so that the molten metal does not block the partition wall cut-out portion 1-2. Since the welding area is significantly reduced, there is a disadvantage that the mechanical strength of the terminal sealing portion is reduced and the reliability is significantly deteriorated.

In the present embodiment, as a means for connecting and connecting the adjacent tunnels as a means for turning the tunnel into a U-turn, the partition wall 1-1 is partially cut off at a predetermined position as shown in FIG. The resection 1-2 is formed and performed.
There are various kinds of means for partition wall resection. The simplest example is a means for cutting the partition wall from the surface of the ribbon plate at a predetermined position near the end of the tunnel partition wall and then welding and sealing the mouth of the opening of the hole. Although this means is simple, it is not possible to visually check the partition walls, so that means for ensuring the perforation position is required.

The plate heat pie thus constituted
Neither the end structure of the pump nor the structure of the turn section for meandering the group of tunnels need to be brazed in a furnace using a vacuum furnace or an atmosphere furnace. It is also possible to carry out by brazing or the like. In contrast to the conventional plate heat pipe, which forms a highly airtight small-diameter tunnel container by laminating and bonding plates, the ribbon-shaped plate has a structure in which a highly airtight tunnel group is formed in advance. , adhesion between the ribbon-like plate heat pipe, be carried out hard sonorous with or soft sonorous with at a during normal atmosphere, because there is not impaired airtightness of the tunnel, each of the small-diameter plate heat pipe Among
Bonding can be performed safely .

[0017] As described above, the ribbon-shaped plate heat pipe can be formed to a required length sufficiently long, the terminal formation does not need to be brazed in the furnace, and the bonding between the ribbon-shaped plate heat pipes is performed in the furnace. Since middle brazing is not required, it is possible to manufacture a large-sized plate heat pipe having a length of 6 m and a width of 1 m and a long ribbon-shaped plate heat pipe having a length of 50 m. Compared with the conventional plate heat pipe, the size and length of the furnace and the size of the meandering groove and photo-etching equipment make it impossible to increase the size and length of the plate heat pipe. I was

[0018] plate which have a through tunnel group tunnel inner diameter 0.8 mm, its flexibility since it is possible to form the thin as plate thickness 1.5 mm, of the many utilizing the light weight and the like Examples are possible.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present embodiment is directed to a small-diameter tunnel pump of the present invention.
A plate-type heat pipe to which a rate pipe is applied.
Therefore, this is an embodiment for easily and surely cutting the partition wall as a means for making a small diameter tunnel into a U-turn. Figure
4 is an explanatory plan view of the present embodiment , which is a partial cross-sectional view for clearly showing the cut-out portion of the partition wall. Figure 5 is a sectional view orthogonal to the tunnel in FIG. Ribbon-shaped metal plate 1
In other words, the small-diameter tunnel plate is composed of multiple parallel small-diameter tunnels.
With certain through tunnels 2-1, 2-2, 2-3, 2-n
are doing.

[0020] In the present embodiment to have a pre-tunnel group
A shallow groove 1-4 substantially perpendicular to the longitudinal edge is cut and formed at a position separated by a predetermined distance from both ends of the metal plate , and the depth of the shallow groove 1-4 is determined by forming a thin film on the tunnel wall surface. The depth of the remaining thin film 1-6 is not enough to reach the remaining wall surface, and the thickness of the remaining thin film 1-6 is sufficiently small so that the position of the partition wall 1-1 can be confirmed by touching with a finger or visually. The width of the shallow groove 1-4 is sufficiently larger than the length of the partition wall cutout 1-2. The partition wall cutting portion 1-2 is formed by cutting off a part of the thin film from the bottom surface of the shallow groove 1-4 and drilling the cutting hole 1-7, and at the same time, removing a predetermined portion of the partition wall to the tunnel bottom wall surface. Thereafter, a filling metal tape 1-5 having a width and a thickness that fits into the shallow groove is inserted into the shallow groove 1-4 by welding and filled with the shallow groove. At the same time, the cutting holes 1-7 of the remaining thin film 1-6 are hermetically sealed and hermetically closed, thereby completing the meandering small diameter tunnel container.

In the present embodiment , the remaining thin film 1-6 has a very important function, and the shallow groove 1-4 and the filled metal tape 1-5
Greatly increases the area of welding contact with the metal tape and improves the reliability of hermetic sealing with the filled metal tape 1-5. Also,
The position of the partition wall can be reliably confirmed by finger touch or visual inspection, and the partition wall resection operation can be facilitated. In FIG. 4, reference numeral 3-1 denotes a welded sealing portion by brazing welding, and reference numeral 3-2 denotes a brazing filler material filling portion of the tunnel. The terminal sealing portion thus formed has a structure as described in FIG.

[0022]

The small-diameter tunnel heat pipe of the present invention is as follows.
Has the effect of (1) Adjacent tunnel terminals are connected to each other
Easy to connect small diameter tunnel plate heat pipe
Can be configured. (2) The plate having the small diameter tunnel is extruded.
It has a seamless integrated structure because it is molded
It is manufactured all at once in one process. Therefore, this is
As a semi-manufactured component material
The cost can be greatly reduced. (3) The conventional plate-type heat pipe is indispensable
The high-cost high-vacuum furnace brazing process that did not come
Manufacturing costs can be significantly reduced
You. (4) Plates with small diameter tunnels are extruded
Since it can be molded into a long length, the molded product requires brazing in a furnace.
And relatively easily solder the molded products together in the normal atmosphere
Or because it can be connected by welding,
The size of the vacuum furnace for forming
Eliminates restrictions due to the size of the groove cutting device, etc.
Constructs an extremely long, small-diameter plate heat pipe of m or more
Can also be achieved by parallel bonding
Large area small-diameter plate heat pipe can be configured
It will work. (5) thin tunnel terminal portion integral from become robust structure formed of a metal block, the harsh handling forced thin plate heat pipe end end of the machine according to the time
By increasing the mechanical strength, the reliability is significantly improved
Confuse. Also, the working fluid becomes hot or the saturated vapor pressure is high.
When using hydraulic fluid, the internal pressure due to high-pressure steam
The weakest part of the small diameter plate heat pipe is both
Terminal, the small-diameter plate heat pipe of the present invention
The withstand voltage reliability in such a state is completely guaranteed. (6) A plurality of highly airtight parallel tunnels are formed in advance
Because of the structure that has been formed, between small-diameter plate heat pipes
Bonding of hard brazing or soft brazing in normal atmosphere
Even if brazing is performed, the airtightness of the tunnel is damaged.
No bonding between individual small-diameter plate heat pipes
Can be implemented safely.

[Brief description of the drawings]

FIG. 1 shows a small diameter tunnel plate heat pipe of the present invention.
Some a plan view showing an embodiment is an explanatory view showing in cross-section.

FIG. 2 is a perspective view showing the structure of a plate having a group of through tunnels, which is a component of the small diameter tunnel plate heat pipe of the present invention.

FIG. 3 shows the small diameter tunnel plate heat pipe of the present invention .
FIG. 3 is an explanatory diagram illustrating a structure of a terminal unit according to the embodiment;
It is shown in a partial sectional view .

FIG. 4 shows the small diameter tunnel plate heat pipe of the present invention .
FIG. 2 is a partial explanatory view of the embodiment, which is partially shown in a sectional view.
You .

FIG. 5 shows the small diameter tunnel plate heat pipe of the present invention .
It is a partial expanded sectional view of an example .

FIG. 6 shows the terminal portion of a small-diameter plate heat pipe according to the present invention.
It is a reference explanatory view showing an example of the outer structure, and a partial cross-sectional view.
Is shown .

FIG. 7 shows the structure of a conventional thin plate heat pipe.
FIG .

FIG. 8 shows the structure of a conventional thin plate heat pipe.
FIG .

[Description of Signs] 1 Ribbon-shaped metal plate (small-diameter tunnel metal plate)
Rate) 1-1 Tunnel bulkhead 1-2 Partition wall excision part 1-7 Cutting hole 2-1 Through tunnel (small diameter tunnel) 2-n Through tunnel (small diameter tunnel) 3 Weld sealing part 3-1 Welding welding part 3-2 Brazing filler part 4-1 Crush welding part 4-2 Brazing filler part

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 8

FIG. 5

FIG. 6

FIG. 7

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F28F 13/10 F28F 13/10

Claims (11)

[Claims] 1. At both ends of a ribbon-shaped metal plate formed by extrusion of a lightweight flexible metal such as an aluminum-based or magnesium-based metal and having a plurality of parallel through-tunnels, both ends of the tunnels are welded by a predetermined welding method. Means, and one end of each tunnel is connected to and communicated with one end of the next adjacent tunnel by a predetermined means at a portion adjacent to the welded seal, thereby forming a U-turn. The other end of the next adjacent tunnel is U-turned by being interconnected and connected by predetermined means similar to one end of the next next tunnel further adjacent to the weld seal. By repeating such means sequentially, the group of tunnels is formed as a continuous long meandering small-diameter tunnel. As a diameter tunnel container, a ribbon-shaped plate heat pipe configured by enclosing a predetermined amount of a predetermined working fluid, wherein predetermined welding sealing means at both ends of the tunnel group is a predetermined welding sealing means at both ends of the tunnel group. Welding and sealing means for completely filling the part up to the depth, which is a brazing welding means for the group of tunnel mouths, or a welding means in which the group of tunnel mouths are crushed and welded A welding means in which either the edge of the ribbon-shaped metal plate having no through-tunnel group or the edge of its short piece is butt-welded to the edge at which the tunnel opening group is aligned, Any of these welding sealing means, and all of these welding sealing means completely fill and close the tunnel until a sufficient amount of molten metal generated by welding reaches a predetermined depth from the tunnel end. Welding and sealing means integrated with the clamping plate body, and the connecting and communicating means between adjacent tunnels as means for making a U-turn of the tunnel is formed by cutting from the plate surface side at a position close to the sealing portion at both ends of the plate. As a result, a predetermined portion of a partition between two pairs of adjacent tunnels which are connected and connected by a U-turn, that is, a predetermined portion of every other partition of a group of tunnel partitions is cut off, and then the cutting opening on the plate surface is welded and sealed. A ribbon-shaped plate heat pipe having a basic structure that is a means to be performed. 2. The means for connecting and connecting adjacent tunnels as a means for turning the tunnel into a U-turn is located at a predetermined distance from both ends of a ribbon-shaped metal plate having a group of tunnels, and is preliminarily attached to a longitudinal edge. An orthogonal shallow groove is cut and formed.The depth of this shallow groove is the depth that does not reach the wall surface where the thin film remains on the tunnel wall surface, and the thickness of the remaining thin film confirms the position of the partition wall by finger touch or visual inspection The thickness of the shallow groove is sufficiently thin enough to be possible, and the width of the shallow groove is sufficiently wider than the length of the partition wall cutout. At the same time as the hole is formed, a predetermined part of the partition wall is removed to the bottom wall of the tunnel and formed.After that, a metal tape with a thickness at least equal to the width fitting into the shallow groove and the depth of the shallow groove is inserted into the shallow groove. To fill the shallow grooves, The ribbon-shaped plate heat pipe according to claim 1, wherein the opening of the cut hole of the thin film is hermetically sealed and sealed to complete a meandering small-diameter tunnel container. 3. Formed by extrusion of a flexible metal,
The material metal constituting the ribbon-shaped metal plate having a plurality of parallel through-tunnel groups is a metal having a melting point sufficiently lower than that of pure copper, and a thick plating of the same metal as this material metal on the outer periphery of a pure copper thin tube of a predetermined length. Are coated to form a composite metal thin tube, and at two positions corresponding to both ends of the meandering small diameter tunnel built in the ribbon-shaped plate heat pipe, there are through holes reaching from the plate outer wall to the tunnel inner wall. The two ends of the above-described composite metal thin tube are inserted into these two through holes, respectively, and brazed or welded in an airtight manner, whereby the meandering small diameter tunnel is formed in a loop shape, and the loop is formed. The ribbon-shaped plate heat pipe according to claim 1, wherein the ribbon-shaped plate heat pipe is configured as a meandering small-diameter tunnel container. 4. Formed by extrusion of a flexible metal,
The material metal constituting the ribbon-shaped metal plate having a plurality of parallel through-tunnel groups is a metal having a melting point sufficiently lower than that of pure copper, and a thick plating of the same metal as this material metal on the outer periphery of a pure copper thin tube of a predetermined length. Is coated to form a composite metal thin tube, and a through hole is formed at a predetermined position of the ribbon-shaped plate heat pipe from the outer wall of the plate to the inner wall of the tunnel, and one end of the above-described composite metal thin tube is inserted into the through hole. It is inserted and airtightly brazed or welded, and the other end of the composite metal thin tube is protruded from the ribbon-shaped plate heat pipe by a predetermined length. The ribbon-shaped plate heat pipe according to claim 1, wherein the heat pipe is configured to be applied as a liquid injection thin tube. 5. A plurality of ribbon-shaped plate heat pipes made of a flexible metal, which are arranged in parallel and parallel with each other and are welded and connected in a plane, or a plurality of ribbon-shaped plate heat pipes arranged in parallel and parallel. Between the plate heat pipes, a ribbon-shaped metal plate made of a flexible metal without a built-in tunnel group and provided with a ribbon-shaped plate heat pipe attaching means as necessary is arranged in parallel and mutually parallel. Or by a flat plate heat pipe formed by any of the above means, and the ribbon-shaped plate heat pipe constituting the main part thereof may be constituted by a single or at least one strip. Either a meandering small-diameter tunnel heat pipe with more turns than the built-in one or a plurality of ribbon-shaped plate heat pipes The terminals of the tunnel containers of the meandering small-diameter tunnel heat pipes incorporated therein are connected and connected to each other by predetermined means, and are configured as meandering small-diameter tunnel heat pipes having at least 20 turns in one line. The ribbon-shaped plate heat pipe according to claim 1, wherein the heat pipe is a heat pipe. 6. A plurality of ribbon-shaped plate heat pipes made of a flexible metal are adhered to each other in a parallel and parallel manner and in a flat plate shape to form a wide-width plate heat pipe. Pitch spot welding or spot brazing is performed. The wide plate heat pipe is configured as a “border” as a whole, and the ribbon plate heat pipe constituting the “border” plate heat pipe is formed. The terminals of the tunnel container of the meandering small-diameter tunnel heat pipe incorporated therein are mutually connected and connected by a predetermined means, and become a single meandering small-diameter tunnel heat pipe having at least 20 turns. The ribbon-shaped plate heat pipe according to claim 1, wherein 7. A plurality of ribbon-shaped plate heat pipes made of a flexible metal are arranged in parallel and parallel with a predetermined gap therebetween, and are formed in a plane shape wider than a plane formed by their outer edges. All of them are welded or brazed to one side surface of the thin flexible metal plate to form a wide plate heat pipe as a whole, increasing the contact area with the applicable heat exchanger. The predetermined gap is a gap in which a fillet generated by welding or brazing is not connected to a fillet of the adjacent ribbon-shaped plate heat pipe, and the ribbon-shaped plate constituting the plate heat pipe The terminals of the tunnel container of the meandering small-diameter tunnel heat pipe built into each heat pipe are interconnected by predetermined means. It is a single, meandering, small-diameter tunnel heat pipe with at least 20 turns, which is connected through and connected to it. A ribbon-shaped plate heat pipe is attached to a predetermined part other than the welded part as necessary. 2. A method according to claim 1, wherein means are provided.
4. A ribbon-shaped plate heat pipe according to 1. 8. A ribbon-shaped metal plate having a group of through tunnels constituting a ribbon-shaped plate heat pipe is an extremely long ribbon formed by welding a ribbon-shaped flexible metal plate having a plurality of groups of through tunnels. In the connection part of the tunnel group of the ribbon-shaped metal plate, each of the tunnels has a melting point higher than that of the material metal of the ribbon-shaped metal plate, and electrolytic corrosion occurs with the material metal. A short thin tubing made of metal that does not have the risk of being fitted and inserted across both plates,
2. The ribbon-shaped metal plate according to claim 1, wherein each of said short thin-walled metal thin tubes is a long ribbon-shaped metal plate formed by being welded and connected to each other in a state of being interposed in the tunnel group. The described ribbon-shaped plate heat pipe. 9. A thin, heat-resistant electrical insulating coating is applied to the entire outer surface of a flexible ribbon-shaped plate heat pipe in which a meandering small-diameter tunnel heat pipe is embedded, and is formed as a winding for electromagnetic equipment. Thus, a coil for an electromagnetic device is configured, a predetermined cooling means is mounted on a predetermined portion of the coil, and a ribbon-shaped plate heat pipe with a built-in meandering small-diameter tunnel heat pipe is formed of a meandering thin-tube heat pipe. The ribbon-shaped plate heat pipe according to claim 1, wherein the heat pipe is applied as a meandering thin tube. 10. The predetermined two-end welding sealing means is a welding sealing means by butt welding connection with a ribbon-shaped metal plate having no through-tunnel group, and the entire surface of the flexible ribbon-shaped plate heat pipe is thin-walled. Is formed as a winding for electromagnetic equipment by applying a heat-resistant electrical insulating coating, thereby forming a coil for electromagnetic equipment. The ribbon-shaped plate heat pipe according to claim 1, wherein the heat pipe is applied as a lead wire. 11. Instead of connecting and communicating means between adjacent tunnels as means for making a U-turn of the tunnel, a hole is drilled from a side edge of the plate at a position close to a welded seal at both ends or one end of the plate. All the tunnels are interconnected by a single common tunnel having a small diameter, and the number of turns of the electromagnetic device coil constituted by the electromagnetic device winding is at least 20.
The ribbon-shaped plate heat pipe according to claim 9, wherein the number of turns is equal to or longer than the number of turns.