JP2003343985A - Plate type heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve cooling capacity by a heat generation body and durability by efficiently diffusing heat from a heat radiation face side of the heat generation body over the whole heat exchanger. <P>SOLUTION: The plate type heat exchanger 100 is constituted by overlapping and fixing metallic plates 20-1, 20-2 on both sides of a metallic plate 30 in which various heat radiation structures are formed. A plate type heat pipe for transporting heat by phase change and travel phenomenon of operation liquid sealed in a meandering pipe arranged in its inside is used in the metallic plates 20-1, 20-2. Since the plate type heat pipe has higher heat conductive property than ordinary metals, it is possible to diffuse heat generated from heat radiation sides of the heat generation bodies 10-1, 10-2 over the whole heat exchanger including the metallic plate 30 through the metallic plates 20-1, 20-2 composed of the plate type heat pipes efficiently. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-shaped heat exchanger that radiates heat from a heating element that takes heat from a temperature controlled object to generate heat through a metal plate. The present invention relates to the structural improvement of the metal plate for further improving the cooling capacity and durability of the heating element.

[0002]

2. Description of the Related Art As a conventional plate-shaped heat exchanger of this kind, one having a structure shown in FIGS. 12 and 13 is known.

Here, FIG. 12 shows a side view of a conventional plate heat exchanger 90, and FIG. 13 shows a top view of the plate heat exchanger 90 in FIG.

As can be seen from FIGS. 12 and 13, the conventional plate-shaped heat exchanger 90 has a heating element 91 using an electronic cooling / heating element module including, for example, a Peltier element.
Is bonded to the upper surface of the heat dissipation plate 92 via grease, an adhesive, a heat dissipation sheet or the like. Here, the heating element 9
The heat radiation side of 1 is abutted and joined to the heat radiation plate 92.

The heat radiating plate 92 is formed by forming a flow path 920 for passing cooling water inside a metal plate such as copper.

In such a conventional plate-shaped heat exchanger 92, a temperature control object (not shown) is provided on the heat absorption side of the heating element 91.
And a fluid inlet 925 to the flow path 920.
By driving the heating element 91 while allowing cooling water to flow from the direction to the fluid outlet 926, heat is taken from the temperature controlled object and the heat is discharged to the heat radiation side.

At this time, the heat dissipated by the heat dissipating plate 92 from the heat taken from the temperature control object which the heating element 91 abuts on its cooling side.
The heat generating element 91 is maintained so as not to exceed a predetermined temperature by transmitting the heat to the cooling water flowing through the flow path 920 inside the heat generating element 91 to radiate the heat.

[0008]

As described above, in the conventional plate-shaped heat exchanger, the heating element composed of the electronic cooling element module or the like is joined to the upper surface of the metal plate in which the flow passage is formed, and the heating element is formed. The heat drawn from the temperature controlled object that is in contact with the cooling side is transmitted to the cooling water flowing through the internal flow path through the heat dissipation plate to dissipate the heat so that the heating element has a predetermined temperature. I was trying not to exceed it.

In such a conventional plate heat exchanger, even if the heat radiating plate is made of a metal (copper or aluminum) having a relatively high thermal conductivity, if the size of the heat generating element is smaller than that of the heat exchanger, The heat diffusion from the heat exchanger is limited to the vicinity of the contact surface with the heat exchanger, and the heat diffusion efficiency when transferring the heat from the heat dissipation surface side of the heating element to the cooling water via the heat dissipation plate is low There was a problem that the performance was lowered and the durability was deteriorated.

The present invention solves the above-mentioned problems and efficiently diffuses the heat from the heat radiating surface side of the heating element through the entire heat exchanger, thereby further improving the cooling capacity and durability of the heating element. An object of the present invention is to provide a heat exchanger.

[0011]

In order to achieve the above object, the invention of claim 1 is characterized in that a first metal plate in which a heat dissipation structure is provided and one or both surfaces of the first metal plate are overlapped. A plate-shaped heat exchanger comprising a second metal plate, which is attached to the opposite side of the first metal plate and transfers heat generated by a heating element to a heat dissipation mechanism of the first metal plate, Of the first and second metal plates, at least the second metal plate is composed of a plate-shaped heat pipe that performs heat exchange by the heat transport action of the heat medium passing through the inside of the pipe. Characterize.

According to a second aspect of the present invention, in the above-mentioned first aspect of the present invention, the plate-shaped heat pipe is provided with a meandering pipe through which a working liquid as the heat medium flows. A self-excited vibration type heat pipe that transfers heat by the phase change and transfer phenomenon of the working fluid enclosed in it, or a plate type heat pipe formed by expanding a heat pipe with a wick structure into a plate shape, or a plurality of metal plates on a metal plate. It is characterized by being a plate-type heat pipe in which a heat pipe is fitted or embedded.

According to a third aspect of the present invention, in the first aspect of the present invention, the first metal plate has a structure in which a continuous groove corresponding to a flow path through which a cooling medium flows is formed. It is characterized by

According to a fourth aspect of the present invention, in the first aspect of the present invention, the first metal plate has a structure in which a slit corresponding to a flow passage for a cooling medium is formed. And

According to a fifth aspect of the present invention, in the first aspect of the present invention, the first metal plate has a structure in which a pipe for flowing a cooling medium is cast inside the plate. To do.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the first metal plate has the corrugated heat radiation fins and the heat radiation fins provided internally between the second metal plates on both sides. It is characterized by being composed of a spacer bar that secures a space.

According to a seventh aspect of the present invention, in the above-described first aspect of the invention, the first metal plate and the second metal plates on both sides are provided.
The metal plates are characterized by being brazed together, either by brazing, or by soldering or adhesive bonding.

According to an eighth aspect of the present invention, in the above-mentioned seventh aspect, the first and second metal plates using the plate-shaped heat pipe are used at the time of heavy attachment by the brazing or soldering, or The heating medium is injected into the second metal plate after the brazing or soldering is completed.

According to a ninth aspect of the present invention, in the first aspect of the invention, the first metal plate and the second metal plates on both sides are fixed by a tightening tool via grease or a heat transfer material. It is characterized by being done.

According to a tenth aspect of the present invention, in the above first aspect of the invention, the first metal plate is provided with a space corresponding to a flow path through which a cooling medium flows.
The metal plate and the second metal plates on both sides are tightened and fixed by a tightening tool via an O-ring or packing provided around the space.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side view showing a conceptual configuration of a plate-shaped heat exchanger (hereinafter referred to as a heat exchanger) 100 according to the present invention.

As shown in FIG. 1, a heat exchanger 100 according to the present invention is joined to, for example, both upper and lower sides of a first metal plate 30 in which a heat dissipation structure is provided, and to the opposite side of the first metal plate 30. The second metal plates 20-1 and 20-2 for transmitting the heat generated from the heat radiating side of the heat generating elements 10-1 and 10-2 to the heat radiating mechanism of the first metal plate 10 are superposed on each other. It

The metal plate 30 is made of, for example, a copper plate. As a heat dissipation structure, heat dissipation is performed through a cooling medium (cooling water or the like) flowing through the internal flow path, and heat dissipation is performed through heat dissipation fins. Structures (see each embodiment described later) are provided.

The metal plates 20-1 and 20-2 are constituted by plate-shaped heat pipes for exchanging heat by the heat transport action of the heat medium passing through the pipes provided therein.

As a plate-shaped heat pipe of this type, for example, a self-excited vibration type heat pipe (Japanese Patent No. 2544701) provided by TS Heatronix Co., Ltd.
No.), a meandering pipe that allows a working fluid (heat medium) to flow therethrough is provided, and heat transfer is performed by a phase change and movement phenomenon of the working fluid enclosed in the meandering pipe, and a conventional wick. A technology of Thermocore Inc. in which a heat pipe having a structure is developed in a plate shape (US Patent No. 6302
No. 192), or one in which a plurality of heat pipes are fitted or embedded in a metal plate can be used.

The plate-shaped heat pipes (metal plates 20-1 and 20-2) have an extremely large thermal conductivity (for example, the above self-excited vibration type) as compared with a general metal such as copper which is a material of the metal plate 30. Heat pipes are known to have 15 to 70 times the thermal conductivity of aluminum.

A heating element 10-which is bonded to the surfaces of the metal plates 20-1 and 20-2 opposite to the metal plate 30.
As 1 and 10-2, for example, an electronic cooling / heating element module (thermo module) that performs cooling and heating using a Peltier element is used.

That is, the heating elements 10-1 and 10-2 are
A plurality of N-type and P-type semiconductor elements (Peltier elements) are alternately arranged in the vertical and horizontal directions, and adjacent elements are electrically connected in series by upper and lower bonding plates (metal electrodes). As shown in the figure, one of the joint plates (heat absorption side) cools and removes heat from the surroundings by passing a direct current in the N-type to P-type direction. The side) operates to generate heat and release the heat to the surroundings.

In the heat exchanger 100 according to the present invention,
The heat radiating sides of the heating elements 10-1 and 10-2 are in contact with and joined to the metal plates 20-1 and 20-2.

The heat exchanger 100 having such a structure (see FIG. 1)
(See), the metal plates 20-1 and 20
-2, the heat generating elements 10-1 and 1 each having the heat radiation side joined
The heat exchanger 100 is arranged such that the heat absorbing side of 0-2 is brought into contact with the object to be cooled, and then the heating elements 10-1, 10
The energization control described above is performed for -2.

By this energization control, the heating elements 10-1, 1
The object to be cooled, which is in contact with the heat absorbing side of 0-2, is cooled, while the heat taken by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat released from the heat radiating side of the heating elements 10-1 and 10-2 is the metal plates 20-1 and 20-.
2 to the metal plate 30 and further to the heat dissipation structure of the metal plate 30 to dissipate heat, and the heat dissipation suppresses overheating of the heating elements 10-1 and 10-2.

In the heat exchanger 100 according to the present invention,
Since the metal plates 20-1 and 20-2 use plate-shaped heat pipes, they have a significantly higher thermal conductivity than metals such as copper.

As a result, the heat exchanger 10 according to the present invention
No. 0 is a conventional device (FIG. 12, FIG. 1) in which a heating element is simply brought into contact with a metallic heat dissipation plate having a flow passage inside.
3)), heat generated from the heat radiating sides of the heat generating elements 10-1 and 10-2 is exchanged through the metal plates 20-1 and 20-2, which are plate-shaped heat pipes, including the metal plate 30. The heat can be efficiently diffused by the entire unit, and as a result, the cooling capacity of the heating elements 10-1 and 10-2 can be enhanced, and the bonding plate (metal electrode) can be also added.
It can also be expected to improve durability by suppressing the temperature rise.

In the structure shown in FIG. 1, the second metal plate (20-1,
20-2) is attached to both sides of the first metal plate 30, but the second metal plate (for example, 10-1) is attached to only one side of the first metal plate 30. Also good.

Although FIG. 1 shows an example in which a plate-shaped heat pipe is adopted only for the second metal plates (20-1, 20-2), the first metal plate 3
0 also uses a plate-shaped heat pipe (see FIG. 11).
See).

Hereinafter, a more detailed structure of the plate-shaped heat exchanger 100 according to the present invention will be described with reference to specific examples.

First Embodiment: FIG. 2 shows a plate-shaped heat exchanger according to the first embodiment (hereinafter, simply referred to as heat exchanger).
A side view of 110 is shown. In addition, this heat exchanger 11
0, the parts denoted by the same reference numerals as those of the heat exchanger 100 shown in FIG. 1 have the same functions.

As shown in FIG. 1, this heat exchanger 110
Is a metal plate 20-1 to which the heating element 10-1 is joined.
And the metal plate 20-2 to which the heating element 10-2 is joined
Has a structure in which the upper and lower sides of the metal plate 30 are superposed.

As the heating elements 10-1 and 10-2, for example, an electronic cooling element module (thermo module) for cooling and heating by utilizing the Peltier effect is used, and the heat radiating side of these is a metal plate 20-1, 20-2 are respectively abutted and joined.

The metal plates 20-1 and 20-2 are discharged from the heat radiating side of the heating elements 10-1 and 10-2 together with the metal plate 30 on which the metal plates 20-1 and 20-2 are superposed. The heat dissipation structure is configured to dissipate heat.

This heat dissipation structure will be described in detail with reference to FIG. FIG. 3 is a perspective view showing an exploded structure of the heat exchanger 110 in FIG.

In FIG. 3, the metal plate 30 is provided with, for example, a U-shaped groove 301 carved to a predetermined depth from the metal plate 20-1 side.

By stacking the metal plates 20-1 and 20-2 on the metal plate 30 from above and below, respectively, the U-shaped groove 301 of the metal plate 30 is closed by the metal plate 20-1. As a result, the flow channel 301a (see FIG. 2) is formed.

The metal plates 20-1 and 20-2, which are superposed on and below the metal plate 30, are each composed of the above-mentioned plate-shaped heat pipe.

That is, the heat exchanger 110 includes metal plates 20-1 and 20 made of plate-shaped heat pipes.
-2 is laminated on both sides of the metal plate 30 in which the groove 301 corresponding to the flow channel 301a is formed.

For this heavy wearing, the metal plate 30
There is a method of brazing the metal plates 20-1 and 20-2 on each surface. In addition, a method of soldering the metal plates 20-1 and 20-2 to each surface of the metal plate 30 or adhering the metal plates 30 using an adhesive can be applied.

The heat exchanger 1 obtained by superposing the metal plates 20-1 and 20-2 on the metal plate 30 by the above method.
10 (see FIG. 2) in actual operation, the heating element 10
The heat exchanger 110 is arranged such that the heat absorption sides of -1, 10-2 (or one of them) come into contact with the object to be cooled.

In this state, the heating element 10-1 is heated while the cooling water is flowed from the fluid inlet 305 to the fluid outlet 306 in the flow passage 301a formed between the metal plate 30 and the metal plate 20-1. , 10-2 performs the energization control described above.

By this energization control, the heating elements 10-1, 1
While cooling the object to be cooled, which is in contact with the heat absorbing side of 0-2, the heat taken away by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat released from the heat radiating side of the heating elements 10-1 and 10-2 is the metal plates 20-1 and 20-.
2 to the metal plate 30, and further transmitted to the cooling water flowing through the flow path 301a of the metal plate 30 to radiate heat, and the heat radiation suppresses overheating of the heating elements 10-1 and 10-2. .

Here, the metal plates 20-1, 20-2
Uses a plate-shaped heat pipe and has a very high thermal conductivity as compared with a general metal such as copper, so that the heat generated by the heating elements 10-1 and 10-2 is generated by the metal plate 20-1, 20-2, heat can be diffused more efficiently through the heat exchanger, and as a result, the heating element 1
It is possible to enhance the cooling capacity by 0-1 and 10-2, and also improve the durability of the heating elements 10-1 and 10-2.

In this embodiment, the metal plates 20-1 and 20-2 using the plate-shaped heat pipe are superposed on both sides of the metal plate 30, but only on one side of the metal plate 30. For example, metal plate 10-
It is also possible to adopt a structure in which 1 is superposed.

In this embodiment, the fluid inlet 305 and the fluid outlet 306 are exposed on the side surface of the metal plate 30. However, as another configuration, a fluid inlet pipe,
A pipe corresponding to the fluid outlet pipe is provided with an internal flow path 301a.
A structure may be employed in which the metal plate 30 is protruded from the side surface (attached by welding or screwing) so as to be connected to. Note that this structure can also be applied to other embodiments.

Second Embodiment: FIG. 4 shows a plate heat exchanger according to the second embodiment (hereinafter, simply referred to as heat exchanger).
A side view of 120 is shown. 5 is a perspective view showing an exploded structure of the heat exchanger 120 in FIG.

As shown in FIG. 4, this heat exchanger 120
Is a metal plate 20-1 to which the heating element 10-1 is joined.
And the metal plate 20-2 to which the heating element 10-2 is joined
Has a structure in which the upper and lower sides of the metal plate 31 are superposed.

In this heat exchanger 120, the structure other than the metal plate 31 is the same as the heat exchanger 1 according to the first embodiment.
It is the same as the structure of 10.

The metal plate 31 is, as shown in FIG.
A U-shaped slit 313 is formed between the plate body 311 and the land 312.

By stacking the metal plates 20-1 and 20-2 on the metal plate 31 from above and below, respectively, the U-shaped slit 3 of the metal plate 31 is stacked.
13 is closed by the metal plates 20-1 and 20-2 to form the flow path 314 (see FIG. 4).

The metal plates 20-1 and 20-2, which are superposed on and under the metal plate 31, are each composed of the above-mentioned plate-shaped heat pipe.

That is, this heat exchanger 120 is composed of metal plates 20-1 and 20 made of plate-shaped heat pipes.
-2 is superposed on both sides of the metal plate 31 in which the slit 3113 corresponding to the flow path 314 is formed.

As a method for superposing the metal plates 20-1 and 20-2 on the metal plate 31, there are brazing, soldering, adhering and the like as in the first embodiment.

Even in the actual operation of the heat exchanger 120, the heat-absorbing sides of the heat generating elements 10-1 and 10-2 (or one of them) are contacted with the object to be cooled. After arranging the exchanger 120, the inside of the flow path 314 formed between the metal plate 31 and the metal plates 20-1 and 20-2 is changed from the fluid inlet 315 to the fluid outlet 3.
While flowing cooling water in 16 directions, the heating element 10-1,
The energization control described above is performed on 10-2.

By this energization control, the heating elements 10-1, 1
While cooling the object to be cooled, which is in contact with the heat absorbing side of 0-2, the heat taken away by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat released from the heat radiating side of the heat generating elements 10-1 and 10-2 is the metal plates 20-1 and 20-.
2 to the metal plate 31, and further transmitted to the cooling water flowing through the flow path 314 of the metal plate 31 to radiate heat, and the heat radiation suppresses overheating of the heating elements 10-1 and 10-2. .

Also in the heat exchanger 120 of this embodiment, the metal plates 20-1 and 20-2 are plate-shaped heat pipes having extremely high thermal conductivity as compared with general metals such as copper. Therefore, the heating elements 10-1, 10
-2 can efficiently dissipate the heat generated by the heat exchanger 2 through the metal plates 20-1 and 20-2 to the entire heat exchanger, and enhance the cooling capacity of the heating elements 10-1 and 10-2. The durability of the heating elements 10-1 and 10-2 can also be improved.

Third Embodiment: FIG. 6 shows a plate-shaped heat exchanger (hereinafter, simply referred to as heat exchanger) 1 according to the third embodiment.
FIG. 7 shows a side view of 30, and FIG. 7 shows the heat exchanger 13 in FIG.
0 shows a top view of 0.

As shown in FIG. 6, this heat exchanger 130
Is a metal plate 20-1 to which the heating element 10-1 is joined.
And the metal plate 20-2 to which the heating element 10-2 is joined
Has a structure in which the metal plate 32 and the metal plate 32 are vertically attached.

Here, the metal plate 32 has a structure in which a meandering pipe (pipe) 40 is cast.
The metal plate 32 is, for example, a molten metal (for example, copper, etc.) in a plate form housing the pipe 40.
It can be produced by pouring aluminum and the like and solidifying.

The metal plates 20-1 and 20-2, which are superposed on both sides of the metal plate 32, are composed of plate-shaped heat pipes, as in the above-mentioned embodiments.

Metal plate 32 and metal plate 20-
1, 20-2 are joined to each other by using methods such as brazing, soldering, and adhesion.

On the upper surface of the metal plate 20-1, for example, a heating element 10-1 composed of an electronic cooling / heating element module is joined so that its heat radiation side is in contact with the metal plate 20-1.

Similarly, on the upper surface of the metal plate 20-2, the heating element 10-2 has its heat radiation side on the metal plate 20-.
It is joined so that it touches 2.

In the operation of the heat exchanger 130 having such a structure, the heat absorption sides of the heating elements 10-1 and 10-2 (or either one of them) may be brought into contact with the object to be cooled. The heat exchanger 130 is arranged in such a manner that the pipe 40 is cast into the metal plate 32.
While the cooling water is allowed to flow from the fluid inlet 401 toward the fluid outlet 402, the above-described energization control is performed on the heating elements 10-1 and 10-2.

By this energization control, each heating element 10-1,
The object to be cooled, which is in contact with the heat absorbing side of 10-2, is cooled, while the heat taken by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat radiated from the heat radiating side of each of the heating elements 10-1 and 10-2 is the metal plates 20-1 and 20-2.
-2 to the metal plate 32, and further transmitted to the cooling water flowing through the pipe 40 cast in the metal plate 32 to radiate heat.
Overheating of 1 and 10-2 is suppressed.

The heat exchanger 130 according to the third embodiment.
In the above, since the metal plates 20-1 and 20-2 have a structure using a plate-shaped heat pipe having an extremely large thermal conductivity as compared with a metal such as copper, each of the heating elements 10-1 and 10- 2 can be efficiently diffused through the heat exchanger through the metal plates 20-1 and 20-2.
10-2 enhances the cooling capacity, and also the respective heating elements 1
The durability of 0-1 and 10-2 can also be improved.

Fourth Embodiment: FIG. 8 shows a plate-shaped heat exchanger according to the fourth embodiment (hereinafter, simply referred to as heat exchanger).
FIG. 4 is a perspective view showing an exploded structure of 140.

In this heat exchanger 140, as shown in FIG.
The parts denoted by the same reference numerals as the respective parts of the heat exchanger 100 shown in have the same functions.

As shown in FIG. 8, the heat exchanger 140 according to the fourth embodiment has a metal plate 20-1 to which the heating element 10-1 is joined and a metal plate 20-to which the heating element 10-2 is joined. 2 has a structure in which the upper and lower sides of the metal plate 34 are superposed on each other by using a fastening tool such as a bolt.

Particularly, in the heat exchanger 140 of this embodiment, a predetermined number of bolt holes 205, 205 are provided near the outer periphery of the metal plates 20-1 and 20-2, and the metal plate 34 is also provided.
The same number of bolt holes 345 are also provided on the metal plate 20-
1, 20-2 are superposed on the metal plate 34 with a grease, an electric heating sheet or the like interposed therebetween, and then these three members are fastened and fixed by bolts 70 through which bolt holes 205, 345, 205 are passed. .

As the metal plates 20-1 and 20-2, plate-like heat pipes are used as in the above-mentioned embodiments.

Further, the metal plate 34 has a U-shaped flow path 341 for circulating cooling water therein, and the flow path 3
A fluid inlet pipe 342 and a fluid outlet pipe 343 are attached to the end portions of 41, respectively.

In the operation of the heat exchanger 140 having such a structure, the heat absorbing sides of the heating elements 10-1 and 10-2 (or one of them) should be contacted with the object to be cooled. After arranging the heat exchanger 140,
The energization control described above is performed for each of the heating elements 10-1 and 10-2 while allowing cooling water to flow from the fluid inlet 342 to the fluid outlet pipe 343 in the internal flow path 341 of the metal plate 34.

By this energization control, each heating element 10-1,
The object to be cooled, which is in contact with the heat absorbing side of 10-2, is cooled, while the heat taken by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat released from the heat radiating side of each of the heating elements 10-1 and 10-2 is the metal plates 20-1 and 20.
-2 to the metal plate 34, and further transmitted to the cooling water flowing through the internal flow path 341 of the metal plate 34 to radiate heat.
-2 overheating is suppressed.

The heat exchanger 140 according to the fourth embodiment.
Also, since the metal plates 20-1 and 20-2 have a structure using a plate-shaped heat pipe having extremely high thermal conductivity as compared with a metal such as copper, the heating element 10
-1, 10-2 generate heat from the metal plate 20-
The heat exchanger can be efficiently diffused through the heat exchangers 1 and 20-2 through the heat generators 10-1 and 10-2.
The cooling capacity of the heating element 10-1, 1
The durability of 0-2 can also be improved.

Fifth Embodiment: FIG. 9 shows a plate-shaped heat exchanger according to the fifth embodiment (hereinafter, simply referred to as heat exchanger).
It is a perspective view showing an exploded structure of 150.

In addition, in this heat exchanger 150, as shown in FIG.
The parts denoted by the same reference numerals as the respective parts of the heat exchanger 100 shown in have the same functions.

As shown in FIG. 9, a heat exchanger 150 according to the fifth embodiment has a metal plate 20-1 to which a heating element 10-1 is joined and a metal plate 20-to which a heating element 10-2 is joined. 2 has a structure in which the upper and lower sides of the metal plate 35 are superposed on each other by using a fastening tool such as a bolt.

In this heat exchanger 150, the metal plates 20-1 and 20-2 are plate-shaped heat pipes, as in the above embodiments. In particular, in this embodiment,
A predetermined number of bolt holes 205, 205 are provided near the outer circumferences of the metal plates 20-1, 20-2.

On the other hand, the metal plate 35 is provided with the same number of bolt holes 355 as the bolt holes 205 of the metal plates 20-1 and 20-2 in the vicinity of the outer periphery thereof, and a space 351 corresponding to a flow path is formed in the central portion. Formed and this space 3
A fluid inlet pipe 352 and a fluid outlet pipe 353 penetrating from 51 to the outside are provided.

The metal plate 35 further includes a space 3
For example, an O-ring 354 is provided around the upper and lower outer peripheral edges of 51. Note that packing may be used instead of the O-ring 354.

The heat exchanger 150 of this embodiment has the metal plates 20 on the upper and lower sides of the metal plate 35 having the above structure.
-1 and 20-2 are superposed, and these three members are tightened and fixed by a bolt 70 through which bolt holes 205, 355, 205 are passed.

In this tightened and fixed state (finished product state), the metal plate 35 and the metal plates 20-
A flow path formed by the space 351 is formed between 1 and 20-2.

As described above, with respect to the metal plate 35 provided with the space 351 corresponding to the flow path, from both sides thereof,
In the actual operation of the heat exchanger 150 having the structure in which the metal plates 20-1 and 20-2 are clamped and fixed by the clamps through the O-ring 354 that is provided around the space 351, the heat generating elements 10-1 and After arranging the heat exchanger 160 so that the heat absorption side of 10-2 (or any one of them) contacts the object to be cooled,
While allowing the cooling water to flow from the fluid inlet pipe 352 to the fluid outlet pipe 353 in the flow path formed by the space 351 of the metal plate 35, the heating elements 10-1 and 10-2.
Then, the energization control described above is performed.

By this energization control, each heating element 10-1,
The object to be cooled provided on the heat absorbing side of 10-2 is cooled, while the heat taken by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat released from the heat radiating side of each of the heating elements 10-1 and 10-2 is the metal plates 20-1 and 20-2.
-2 to the metal plate 35, and further transmitted to the cooling water flowing through the internal flow path (space 351) of the metal plate 35 to radiate heat, and the heat radiation causes each heating element 10-
Overheating of 1 and 10-2 is suppressed.

The heat exchanger 150 according to the fifth embodiment.
Also, since the metal plates 20-1 and 20-2 have a structure using a plate-shaped heat pipe having extremely high thermal conductivity as compared with a metal such as copper, the heating element 10
-1, 10-2 generate heat from the metal plate 20-
The heat exchanger can be efficiently diffused through the heat exchangers 1 and 20-2 through the heat generators 10-1 and 10-2.
The cooling capacity of the heating element 10-1, 1
The durability of 0-2 can also be improved.

Sixth Embodiment: FIG. 10 shows a plate heat exchanger according to the sixth embodiment (hereinafter, simply referred to as heat exchanger).
FIG.

In addition, in this heat exchanger 160, as shown in FIG.
The parts denoted by the same reference numerals as the respective parts of the heat exchanger 100 shown in have the same functions.

As shown in FIG. 10, the heat exchanger 160 according to the sixth embodiment includes a corrugated fin (corrugated heat radiation fin) 60 and super servers 6 arranged on both sides thereof.
A metal plate 20-1 in which a heating element 10-1 is joined to both sides of a metal plate composed of 5-1 and 65-2.
And the metal plate 20-2 to which the heating element 10-2 is joined are superposed.

Here, the spacer bars 65-1, 65-
2 has the same height as the corrugated fin 60, and secures a space in which the corrugated fin 60 can be provided between the metal plate 20-1 and the metal plate 20-2.
This space is used as a flow path for a cooling medium such as cooling water.

As the metal plates 20-1 and 20-2, plate-like heat pipes similar to those in the above-mentioned respective embodiments are used.

In operation of the heat exchanger 160 having such a structure, the heat absorbing sides of the heat generating elements 10-1 and 10-2 (or one of them) should be contacted with the object to be cooled. After arranging the heat exchanger 160,
While allowing a cooling medium such as cooling water to flow through the space (flow path) in which the corrugated fins 60 are installed, each heating element 10
The above-described energization control is performed for -1, 10-2.

By this energization control, each heating element 10-1,
The object to be cooled, which is in contact with the heat absorbing side of 10-2, is cooled, while the heat taken by this cooling is released to the heat radiating side (the side joined to the metal plates 20-1 and 20-2).

At this time, the heat emitted from the heat radiating side of each of the heat generating elements 10-1 and 10-2 is transmitted to the corrugated fins 60 and radiated to the cooling medium, and the heat radiating causes each heat generating element 10-.
Overheating of 1 and 10-2 is suppressed.

The heat exchanger 160 according to the sixth embodiment.
Also, since the metal plates 20-1 and 20-2 have a structure using a plate-shaped heat pipe having extremely high thermal conductivity as compared with a metal such as copper, the heating element 10
-1, 10-2 generate heat from the metal plate 20-
The heat exchanger can be efficiently diffused through the heat exchangers 1 and 20-2 through the heat generators 10-1 and 10-2.
The cooling capacity of the heating element 10-1, 1
The durability of 0-2 can also be improved.

In each of the first to sixth embodiments, the second metal plate (20-1, 20-2) is replaced with the first metal plate (30, 31, 32, 34, 35). Is a plate made of another metal and has a heat conductivity higher than that of the first metal plate (plate heat pipe). The plate heat exchanger according to the present invention will be described later. It can also be realized by a structure in which both the first and second metal plates are plate-shaped heat pipes as in the seventh embodiment.

Seventh Embodiment: FIG. 11 is a perspective view showing an exploded structure of a plate heat exchanger (hereinafter, simply referred to as heat exchanger) 170 according to the seventh embodiment.

In this heat exchanger 170, as shown in FIG.
The parts denoted by the same reference numerals as the respective parts of the heat exchanger 100 shown in have the same functions.

As shown in FIG. 11, the heat exchanger 170 according to the seventh embodiment has a metal plate 25-1 to which the heating element 10-1 is joined and a metal plate 25-to which the heating element 10-2 is joined. 2 has a structure in which the upper and lower sides of the metal plate 26 are superposed on each other.

Here, the metal plates 25-1, 25-
2 and the metal plate 26 are all plate-shaped heat pipes similar to the metal plates 20-1 and 20-2 in the above-described embodiments.

In the present embodiment, the metal plate 26 and the metal plates 25-1 and 25-2 are brazed,
It joins using each method, such as soldering and adhesion.

The metal plate 26 has a plate body 26.
1 and the land portion 262 have a U-shaped slit 263.
Are formed.

By stacking the metal plates 25-1 and 25-2 on the metal plate 26 from above and below, respectively, the U-shaped slit 263 of the metal plate 26 is formed into the metal plates 25-1 and 25-. It is blocked by 2 to form a flow path.

In operation of the heat exchanger 170 having such a structure, the heat absorbing sides of the heat generating elements 10-1 and 10-2 (or one of them) should be contacted with the object to be cooled. After arranging the heat exchanger 170,
While flowing the cooling water inside the flow path formed between the metal plates 25-1 and 25-2 and the metal plate 26, the above-described energization control is performed on the heating elements 10-1 and 10-2. To do.

By this energization control, the heating elements 10-1, 1
The object to be cooled, which is in contact with the heat absorbing side of 0-2, is cooled, while the heat taken by this cooling is released to the heat radiating side (the side joined to the metal plates 25-1 and 25-2).

At this time, the heat released from the heat radiating side of the heating elements 10-1 and 10-2 is the metal plates 25-1 and 25-.
2 to the metal plates 25-1 and 25-2.
The cooling water flowing through the flow path formed between 5-2 and the metal plate 26 is transmitted and radiated, and the heat radiation suppresses overheating of the heating elements 10-1 and 10-2.

According to the heat exchanger 170 of this embodiment, each of the metal plates 25-1, 25-2 and the metal plate 26 has a very high thermal conductivity as compared with a metal such as copper. Since it is configured by using a heat pipe, the heat generated by the heat generating elements 10-1 and 10-2 is more efficiently exchanged through the metal plates 25-1 and 25-2 than in the above-described embodiments. The heat can be diffused to the entire container, and the cooling capacity and durability of the heating elements 10-1 and 10-2 can be further improved.

Besides, the present invention is not limited to the embodiments described above and shown in the drawings, but can be appropriately modified and carried out within the scope not changing the gist thereof.

For example, a metal plate using a plate-shaped heat pipe (metal plates 20-1 and 20-2 in FIG. 1)
It is possible to arbitrarily determine whether 0 to 2) are mounted on both sides or one side of a metal plate having a heat dissipation structure (corresponding to the metal plate 30; a plate-shaped heat pipe may be used).

[0124] Further, as a method of superposing the metal plates, it is possible to select a method such as brazing, soldering, or adhesion, or a method of fastening and fixing using a fastening tool such as a bolt.

Here, in the case of joining by brazing or soldering, that is, when heat is required at the time of joining, it is safe from the viewpoint of safety that the working liquid is contained in the inner pipe of the metal plate using the plate heat pipe. Since there is concern, it is preferable to inject the working fluid into the inner pipe of the plate-shaped heat pipe after joining the metal plates.

It goes without saying that, as an application example of the present invention, it is used as a heat exchanger on the heat absorption side of a Peltier element and is also effective as a fluid cooling means.

Further, the heating element 10 is not limited to the electronic cooling / heating element module using the Peltier element, but various heating elements such as those constituted by a semiconductor chip can be used.

[0128]

As described above, according to the present invention,
A second heat transfer mechanism that transfers heat generated by a heating element bonded to the opposite side of the first metal plate to one or both surfaces of the first metal plate having the heat dissipation structure provided therein to the heat dissipation mechanism of the first metal plate. Of the first and second metal plates, and at least the second metal plate is composed of a plate-shaped heat pipe, the heat generated by the heating element is much higher than that of a general metal. The heat dissipation effect can be remarkably enhanced by efficiently dissipating heat through the entire heat exchanger through the second metal plate made of a plate-shaped heat pipe having the property of
This can contribute to the improvement of the cooling capacity of the heating element and the durability of the heating element.

[Brief description of drawings]

FIG. 1 is a side view showing a conceptual configuration of a plate-shaped heat exchanger according to the present invention.

FIG. 2 is a side view of the plate heat exchanger according to the first embodiment.

FIG. 3 is a perspective view showing an exploded structure of the plate-shaped heat exchanger in FIG.

FIG. 4 is a side view of a plate heat exchanger according to a second embodiment.

5 is a perspective view showing an exploded structure of the plate-shaped heat exchanger in FIG.

FIG. 6 is a side view of a plate heat exchanger according to a third embodiment.

7 is a top view of the plate heat exchanger in FIG.

FIG. 8 is a perspective view showing an exploded structure of a plate-shaped heat exchanger according to a fourth embodiment.

FIG. 9 is a perspective view showing an exploded structure of a plate-shaped heat exchanger according to a fifth embodiment.

FIG. 10 is a side view of a plate heat exchanger according to a sixth embodiment.

FIG. 11 is a perspective view showing an exploded structure of a plate-shaped heat exchanger according to a seventh embodiment.

FIG. 12 is a side view of a conventional plate heat exchanger.

FIG. 13 is a top view of a conventional plate heat exchanger.

[Explanation of symbols]

100,110,120,130,140,150,160,170 Plate-shaped heat exchangers 10-1, 10-2 Heating elements 20-1, 20-2, 25-1, 25-2, 26 Metal plate (plate Heat pipe) 205,345,355 Bolt holes 30, 31, 32, 34, 35 Metal plate 301 Grooves 301a, 314 Flow paths 305, 315, 401 Fluid inlets 306, 316, 402 Fluid outlets 311, 261 Plate body 312 , 262 Land portion 313, 262 Slit 341 Flow path 342, 352 Fluid inlet pipe 343, 353 Fluid outlet pipe 351 Space 354 O-ring 40 Pipe 60 Corrugated fin 65-1, 65-2 Spacer

Claims (10)

[Claims] 1. A first metal plate having a heat-dissipating structure provided therein, and a heating element superposed on one surface or both surfaces of the first metal plate and joined to the opposite side of the first metal plate. A plate-shaped heat exchanger comprising a second metal plate that transfers the heat generated to a heat dissipation mechanism of the first metal plate, wherein at least the second metal plate of the first and second metal plates. The plate-shaped heat exchanger is characterized by being constituted by a plate-shaped heat pipe that performs heat exchange by a heat transport action of a heat medium passing through an internally provided pipe. 2. The plate-shaped heat pipe is internally provided with a meandering pipe for allowing the working liquid as the heat medium to flow therethrough, and heat transfer is performed by a phase change and movement phenomenon of the working liquid sealed in the meandering pipe. Either a self-excited vibrating heat pipe for performing the above, a plate type heat pipe formed by expanding a heat pipe having a wick structure into a plate shape, or a plate type heat pipe in which a plurality of heat pipes are fitted or embedded in a metal plate. The plate-shaped heat exchanger according to claim 1, wherein 3. The plate-shaped heat exchanger according to claim 1, wherein the first metal plate has a structure in which a continuous groove corresponding to a flow path through which a cooling medium flows is formed. . 4. The plate-shaped heat exchanger according to claim 1, wherein the first metal plate has a structure in which a slit corresponding to a flow path through which a cooling medium flows is formed. 5. The plate-shaped heat exchanger according to claim 1, wherein the first metal plate has a structure in which a pipe for flowing a cooling medium is cast inside the plate. 6. The first metal plate comprises a corrugated heat radiation fin and a spacer bar for securing a space for internally disposing the heat radiation fin between the second metal plates on both sides. The plate-shaped heat exchanger according to claim 1. 7. The first metal plate and the second metal plates on both sides are superposed on each other by brazing, soldering or bonding with an adhesive. Plate heat exchanger. 8. The brazing or soldering to the first and second metal plates or the second metal plate using the plate-shaped heat pipe at the time of heavy adhesion by the brazing or soldering. The plate-shaped heat exchanger according to claim 7, wherein the heat medium is injected after completion of attachment. 9. The plate-shaped heat according to claim 1, wherein the first metal plate and the second metal plates on both sides are clamped and fixed by a clamp via a grease or a heat transfer material. Exchanger. 10. The first metal plate is provided with a space corresponding to a flow path through which a cooling medium flows, and the first metal plate and the second metal plates on both sides are surrounded by the space. The plate-shaped heat exchanger according to claim 1, wherein the plate-shaped heat exchanger is clamped and fixed by a clamp via an O-ring or packing provided.