JP3495098B2 - Radiator and manufacturing method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a radiator and a method of manufacturing the radiator.
Concerning the law .

[0002]

2. Description of the Related Art In general, a radiator that is incorporated in an audio device, an OA device or the like to radiate heat from an electronic component is known. As shown in FIG. 8, this type is manufactured by scraping the surface of an extruded mold member 101 made of aluminum to form a radiating fin 102. However, if the extruded mold material 101 is used, the width (w) of the base 101a must be 450 mm or less and the thickness (t) must be 2.5 mm or more due to manufacturing restrictions, which limits the size of the radiator. Receive. To remove this constraint,
Conventionally, there has been proposed a radiator in which a flat protrusion is provided on a flat panel and the hollow protrusion is shaved up to form a radiation fin.

[0003]

However, in the conventional structure, there is a limit to the heat dissipation effect depending on the number and size of the heat dissipation fins, and there is a problem that the heat dissipation effect cannot be further enhanced. Further, in the structure shown in FIG. 8, there is a problem that the direction of the air flowing through the radiator is limited to one direction, and the air cannot flow in the direction orthogonal to the one direction.

Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technique, to be free from the restriction of the size of the radiator, and to be restricted in the direction of the air flowing through the radiator. In addition, the radiator and the manufacturing method thereof can sufficiently enhance the heat radiation effect as compared with the conventional one.
To provide the law .

[0005]

In order to achieve the above object, a first aspect of the present invention uses a pressure-preventing agent on both sides of a plate member.
Print the expected expansion tube and place it above and below the plate member respectively.
Another plate member is piled up, rolled and crimped, and then the expansion tube
By introducing high-pressure air into the fixed section to form the expansion tube section,
To manufacture the panel body,
Part of the panel body
A circuit for circulating or enclosing the heat transfer medium is formed in the expansion tube portion on the other surface.

The second invention is a minimum of about 1.2 mm.
Even if the thickness of the plate member is thin, use an anti-compression agent on both sides of the plate member.
Print the expected expansion tube and place it above and below the plate member respectively.
Another plate member is piled up, rolled and crimped, and then the expansion tube
By introducing high-pressure air into the fixed section to form the expansion tube section,
For manufacturing panel bodies and mounting electronic components.
Keep the expansion tube on one side of the tube
A ring-shaped heat radiation fin is formed by shaving in the longitudinal direction of the portion, and a circuit for circulating or enclosing the heat transfer medium is formed in the expansion tube portion on the other surface.

[0007]

According to the first and second inventions, one surface of the panel body
Since the radiating fin is formed by scraping off the expansion tube part of, the radiating fin has a ring shape, so that the direction of the air flow to the radiator is not limited to one direction as in the conventional case. The wind can also flow in the direction orthogonal to the surface of the heat radiation fin. Further, unlike the conventional case, since the extruded mold material is not used, there is no restriction in manufacturing, and the size of the radiator is not restricted. Furthermore, the other side of the panel body
A circuit that circulates or encloses the heat transfer medium is formed in the tube portion. According to this, for example, a heat pipe is formed, so that the heat radiation effect can be significantly enhanced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a radiator according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a panel body of a radiator, and this body 1 is manufactured by forming a plurality of expansion tubes (hollow protrusions) 3 on a flat panel.

That is, in this embodiment, the main body 1 is made of aluminum and is manufactured by, for example, the roll bond manufacturing method. In this specification, hereinafter, the term "aluminum" includes aluminum alloy as well as pure aluminum.

The manufacture of the panel body 1 will be described.
First, the aluminum plate 100 is provided, the pre-expanded tube 101 is printed on both sides of the aluminum plate 100 using a pressure-preventing agent, and the aluminum plates 102 and 103 are stacked on the upper and lower sides of the aluminum plate 100, respectively, and rolled and pressure-bonded.
After that, high pressure air is introduced into the expected expansion tube portion 101 to expand those portions.

First, according to this embodiment, a radiation fin is formed on one surface of the panel body 1 manufactured as described above.

First, in FIGS. 2 and 3, a shaving and raising blade (not shown) is applied to the swelling tube portion 3 (FIG. 1) on one surface of the panel body 1, and the shaving and raising blade is applied in the longitudinal direction of the swelling tube portion 3. Move forward (in the direction a). Thereby, the expansion tube portion 3
Are shaving up to form the radiation fins 5a in the first row.

Then, the shaving and raising blade is retracted, and at that position, the shaving and raising blade is again brought into contact with the expansion tube portion 3 to advance and move in the longitudinal direction (direction a) of the expansion tube portion 3, The heat radiation fins 5b in the second row are formed.

Further, the shaving and raising operation is repeated in order to form the radiation fins 5c ...

The radiating fin 5 manufactured in this manner is formed in a substantially ring shape as shown in FIG.

Next, the expansion tube portion 3 on the other surface of the panel body 1
In FIG. 1, a heat transfer medium is enclosed to form a heat pipe 200 as a known means.

However, according to this embodiment, since the panel body 1 is manufactured by the roll bond manufacturing method, unlike the conventional method, the thickness (t) of the base 1a can be as small as about 1.2 mm. Become. Further, the size of the heat transfer area does not have the limit as in the extruded mold material and can be freely designed. For example, in this embodiment, 1000 mm × 2660 mm (W × L)
It can be as large as a degree.

Further, unlike the conventional case, the wall thickness of the main body 1 can be reduced, so that the weight can be reduced and the pattern of the expansion tube portion 3 can be arbitrarily changed.

Further, since the radiating fin 5 is formed in a substantially ring shape, when it is used as a radiator, it has the same structure as that in which a ventilation hole is opened in the surface of the radiating fin 5. In addition to the conventional air flow direction (X direction), for example, as shown in FIG. 2, air flow can be performed in a direction (Y direction) orthogonal to the surface of the heat radiation fins 5, so that compared to the conventional air flow direction. As a result, it is possible to provide a radiator that can blow air in two directions and is extremely easy to use.

Further, as a feature of this embodiment, since the heat radiation fins 5 are formed on one surface of the panel body 1 and the heat pipes 200 are formed on the other surface, the heat radiation effect is remarkably higher than that of the conventional one. Can be improved. In the past, radiating fins and heat pipes were manufactured separately,
After that, they were joined by brazing or other methods, but this has the drawback of increasing the manufacturing cost, increasing the weight, and further increasing the thermal resistance between the heat radiation fins and the heat pipe. is there. According to this embodiment, it is possible to solve all of these problems with a simple configuration.

FIG. 4 shows a specific example in which electronic parts are attached to this radiator.

An electronic component 110 is provided on one surface of the panel body 1.
Is provided, and specifically, the radiation fins 5 are formed so as to avoid the space. On the other surface, the expansion tube portion 3 is provided over the entire area, and the heat pipe heat transfer medium is enclosed therein. According to this, the heat generated from the electronic component 110 is dissipated through the plurality of heat dissipating fins 5 on one surface of the panel body 1, and is sent from the heat absorbing side A to the heat dissipating side B through the heat pipe on the other surface. The heat is dissipated through the heat dissipating fins 5 on the heat dissipating side B.
Therefore, the heat dissipation efficiency of the radiator is significantly improved as compared with the conventional one.

5 to 7 show a reference example of the present invention .

The main body 1 has a high-expansion tube portion 31,
An expansion tube portion 33 having a low height is formed. A heat pipe heat transfer medium is enclosed in the low expansion tube portion 33, and this radiator constitutes a heat pipe type radiator.

The high-expansion tube portion 31 is cut and raised in a plurality of steps, as in the above-mentioned embodiment, and a ring-shaped heat radiation fin 35 is formed therein.

As the manufacturing method in this case, first, the high expansion tube portion 31 is shaved up to form the heat radiation fins 35, and then the heat transfer medium is sealed in the low expansion tube portion 33.

According to this, as is apparent from FIG. 6, the ring-shaped heat radiation fins 3 are provided on the plate surface of the panel body 1.
In addition to 5, the heat pipe circuit 33 is provided, so that the heat dissipation efficiency can be improved as in the above-described embodiment. Further, in this case, although the bulging pipe portion having the height is formed on the plate surface of the panel body 1, the bulging pipe portion having the same height is formed, and the bulging pipe portion is shaved every one row or a plurality of rows. You may wake it up.

In this manufacturing method, the cutting edge of the shaving blade may be cut out so as to straddle the expansion tube portion, and the shaving blade may be used for shaving.

In the above embodiment, an example in which the heat transfer medium is enclosed in the expansion tubes 3, 33 of the panel body 1 to form a heat pipe has been described. The radiator according to the present invention can be made to function as a heat exchanger by circulating a refrigerant.

Although the present invention has been described based on the embodiment, the present invention is not limited to this.

For example, the main body 1 is not limited to the one manufactured by the roll bond manufacturing method, but a tube (hollow protrusion) is joined to a flat panel made of aluminum or stainless steel, and the tube is ground to raise the heat radiation fin. It may be formed. Further, although the main body 1 is described as having three layers of aluminum plates, the main body 1 is not limited thereto and may have four or more layers.

[0033]

As apparent from the foregoing description, according to the present invention <br/>, to form a radiating fin causing scraping 膨管portion of one surface of the panel body, the panel body of the other surface Rise tube
Since the part to form a heat pipe for example, the radiation fin is in a ring shape, in addition to the direction through the conventional wind,
For example, since it is possible to pass air in the direction orthogonal to the surface of the radiation fins, it is possible to allow air to flow in two or more directions, which makes it easy to use and provides a radiator with superior heat dissipation efficiency compared to conventional ones. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a radiator according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view showing an example in which electronic components are attached to a radiator.

FIG. 5 is a perspective view showing another embodiment of the radiator according to the present invention.

FIG. 6 is a plan view of the same.

FIG. 7 is a side view of the same.

FIG. 8 is a perspective view showing a conventional radiator.

[Explanation of symbols]

1 body 3,31,33 Expansion tube (hollow protrusion) 100 aluminum plate 101 Expected expansion tube 102 aluminum plate 200 heat pipe

Continuation of the front page (56) Reference JP-A-4-72795 (JP, A) JP-A-6-159894 (JP, A) JP-A-5-60483 (JP, A) JP-A-4-224357 (JP , A) JP-A-4-340091 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05K 7/20

Claims (2)

(57) [Claims] 1. A swelling tube using a pressure-preventing agent on both sides of a plate member.
Print the planned part and separate it above and below the plate member.
Plate members are piled up, rolled and pressure-bonded, and then the planned expansion tube
By introducing high-pressure air into the
The panel body is manufactured and the expansion tube on one surface of the panel body is scraped and raised to dissipate the heat radiation.
And a circuit for circulating or enclosing a heat transfer medium is formed in the expansion tube portion on the other surface of the panel body . 2. The thickness is as thin as about 1.2 mm,
Use the anti-pressing agent on both sides of the plate member
And stack different plate members above and below the plate member.
Roll and crimp, and then introduce high pressure air to the planned expansion tube.
Manufacture the panel body by inserting and forming the expansion tube
And avoid the space for mounting electronic components
Then, shave the expansion tube on one side in the longitudinal direction of this expansion tube.
To form a ring-shaped heat radiation fins Strain, other surface
A heat radiator characterized in that a circuit for circulating or enclosing a heat transfer medium is formed in the expansion tube portion of.