CN103313574B - heat sink - Google Patents

Abstract

A heat dissipation device comprises a body, a first bending part, a second bending part, a plurality of heat pipes and a working fluid. The body is provided with a central line, the first bending part is connected with the body, and a tangent direction of the first bending part and the central line form a first included angle theta 1, wherein theta 1 is more than 0 degree and less than 180 degrees. The heat pipes are formed in the body, wherein at least one of the heat pipes extends from the body to the first bending part, and the working fluid is stored in the heat pipes to transfer heat. The heat dissipation device provided by the invention is simple in manufacturing process and can effectively save cost.

Description

heat sink

technical field

The invention relates to a heat dissipation device, in particular to a heat dissipation device with a heat pipe.

Background technique

With the rapid development of electronic devices, the requirements for heat dissipation efficiency of electronic components are getting higher and higher. In order to obtain sufficient heat dissipation efficiency, existing electronic devices often use a combination of heat pipes and fins to dissipate heat. escape to the outside world.

However, this known heat sink requires an additional process of combining heat pipes and fins, which not only complicates the manufacturing process, but also increases the cost.

Contents of the invention

An embodiment of the present invention provides a heat dissipation device, which includes a body, a first curved portion, a plurality of heat pipes, and a working fluid. The aforementioned body has a centerline, the first curved portion is connected to the body, and the tangential direction of the first curved portion forms a first included angle θ1 with the aforementioned centerline, wherein 0°<θ1<180°. The heat pipe is formed inside the body, wherein at least one of the plurality (plurality) of heat pipes extends from the body to the first bend, wherein the working fluid is stored in the heat pipe to transfer heat.

In one embodiment, the aforementioned heat dissipation device further includes a second bent portion, the aforementioned second bent portion is connected to the main body, wherein the second bent portion and the first bent portion are respectively located on opposite sides of the center line, and the second bent portion The tangent direction forms a second included angle θ2 with the central line, where 0°<θ2<180°. Wherein, the plurality of heat pipes respectively extend from the body to the first and second bending parts.

In one embodiment, the aforementioned body has a first end and a second end, and the aforementioned first bent portion and the aforementioned second bent portion are formed between the aforementioned first end and the aforementioned second end.

In one embodiment, the aforementioned body and the aforementioned first and second bending portions are integrally formed.

In one embodiment, the aforementioned body and the aforementioned first and second bent portions are made of aluminum.

In an embodiment, the aforementioned thermal device further has a plurality of first curved portions and a plurality of second curved portions.

In one embodiment, the first curved portion and the second curved portion are formed at the first end and the second end.

In one embodiment, the aforementioned first curved portion and the second curved portion form a dendritic structure.

In one embodiment, the aforementioned heat pipe is substantially parallel to the aforementioned central line.

In one embodiment, the aforementioned body forms an arc-shaped turning portion.

Description of drawings

Fig. 1 shows the schematic diagram before processing of the cooling device of an embodiment of the present invention;

FIG. 2 shows a schematic diagram of the connection between a heat sink and a heat source according to an embodiment of the present invention;

3 shows a perspective view of a heat sink according to an embodiment of the present invention;

Fig. 4 shows the schematic diagram of the heat dissipation device of another embodiment of the present invention;

Fig. 5 shows the schematic diagram of the heat sink of another embodiment of the present invention before processing; and

FIG. 6 is a schematic view of the heat sink shown in FIG. 5 after processing.

Wherein, the reference signs are explained as follows:

heat sink 100; first end 101;

second end 102; body 10;

rib 11; cutting line 12;

turning part 13; first bending part 20;

The second bending part 21; the heat pipe 30;

heat source 50; centerline C;

The first angle θ1; the second angle θ2.

detailed description

Embodiments of the present invention will be described in detail below with reference to the drawings. Please refer to Fig. 1 first, the heat dissipation device 100 of an embodiment of the present invention is mainly made of a rectangular metal plate, the metal can be aluminum or copper, wherein a plurality of hollow and parallel arrays are formed inside the metal plate. The heat pipes 30 are spaced apart from each other by elongated ribs 11 , and the inside of the heat pipes 30 can be filled with working fluid for transferring heat energy.

It should be noted that when the heat sink material is aluminum, the working fluid is acetone. When the material of the cooling device is copper, the working fluid is water, which can achieve the best effect. However, those skilled in the art should know other device materials and working fluids with good matching effects, and will not repeat them here.

Please refer to FIGS. 1 to 3 together. One end of the heat sink 100 can be cut along the cutting line 12 and bent in different directions to form at least one first bending portion 20 and at least one second bending portion 21 (as shown in FIG. 2. As shown in FIG. 3 ), the cutting lines 12 can be arranged on the ribs 11 between the heat pipes 30 , thereby avoiding the heat pipes 30 from breaking during cutting and causing the working fluid to leak out. It should be understood that the aforementioned heat pipes 30 are arranged parallel to each other in configuration, and one or more heat pipes 30 may be included between each cutting line 12 .

It can be seen from FIG. 2 and FIG. 3 that the heat sink 100 of this embodiment is formed with a body 10 and a plurality of first and second curved portions 20, 21 extending from the body 10 after cutting and bending, wherein The aforementioned heat pipe 30 extends from the inside of the main body 10 to the first and second curved portions 20, 21, and the aforementioned body 10 and the first, second curved portions 20, 21 are integrally formed, so that heat energy can be effectively transferred to the heat sink. end of device 100.

As shown in FIG. 2 , the body 10 has a centerline C, and the body 10 forms an arc-shaped turning portion 13 , wherein the first bending portion 20 and the second bending portion 21 are located on opposite sides of the centerline C, respectively. In this embodiment, the tangent direction of the first bending portion 20 and the centerline C form a first included angle θ1, and 0°<θ1<180°; in addition, the tangent direction of the second bending portion 21 and the center line The line C forms a second included angle θ2, and 0°<θ2<180°.

Thus, the first and second curved portions 20 and 21 can form a dendritic structure at the end of the heat dissipation device 100 , thereby improving heat dissipation performance. For example, one side of the aforementioned main body 10 can be in contact with the heat source 50. When the working fluid in the heat pipe 30 is heated and vaporized, it can transfer heat energy to the first and second curved parts 20 and 21, and then when the working fluid is in the first , After the second curved parts 20 and 21 are cooled and liquefied, they can return to the heat source 50 to continue absorbing heat energy, and this cycle is repeated to achieve the effect of continuous heat dissipation.

Next, please refer to FIG. 4 , the heat dissipation device according to another embodiment of the present invention is mainly provided with first and second curved portions 20 and 21 at the first end 101 and the second end 102 of the body 10, so that the body 10 can be positioned on both sides. The end forms a dendritic structure to further enhance the heat dissipation performance. In this embodiment, the heat dissipation area that can be formed by the first bending portion 20 and the second bending portion 21 is larger than that of the previous embodiment, so it can have a better heat dissipation effect.

Next, please refer to FIG. 5 and FIG. 6 together. As shown in FIG. 5 , in another embodiment of the heat dissipation device of the present invention, the cutting line 12 is mainly arranged between the first end 101 and the second end 102 of the body 10, which can After the cutting is completed, at least one first bent portion 20 and/or at least one second bent portion 21 are bent upwards and downwards. The cutting lines 12 can be arranged on the ribs 11 between the heat pipes 30 , thereby preventing the heat pipes 30 from breaking during cutting and causing the working fluid to leak out. It should be understood that the aforementioned heat pipes 30 are arranged parallel to each other, and one or more heat pipes 30 may be included between each cutting line 12 .

Although the present invention has been described above through the foregoing embodiments, they are not intended to limit the present invention. Those skilled in the technical field to which the present invention belongs may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined by the appended claims.

Claims (6)

1. a heat abstractor, it comprises:

One body, has a center line and a first end and one second end;

One first bend, this first bend is formed between this first end of this body and this second end, wherein a tangential direction of this first bend and this center line form one first angle theta 1, and 0 ° of < θ 1<180 °;

One second bend, this second bend is formed between this first end of this body and this second end, and this second bend and this first bend lay respectively at the opposition side of this center line, one tangential direction of this second bend and this center line form one second angle theta 2, wherein 0 ° of < θ 2<180 °;

Multiple heat pipe, is formed at this body interior; And

One working fluid, is stored in described heat pipe, in order to transferring heat;

Described heat pipe extends to this first, second bend by this body respectively.

2. heat abstractor as claimed in claim 1, wherein, this body and this first, second bend are formed in one.

3. heat abstractor as claimed in claim 1, wherein, this body and this first, second bend contain aluminium or copper material.

4. heat abstractor as claimed in claim 1, wherein, this heat abstractor has multiple first bend and multiple second bend.

5. heat abstractor as claimed in claim 1, wherein, described heat pipe is roughly parallel to this center line.

6. heat abstractor as claimed in claim 1, wherein, this body is formed with the turning point of an arcuation.