TWI781515B - Heat dissipation structure and manufacturing method thereof - Google Patents

Abstract

A heat dissipation structure and manufacturing method thereof are provided. The heat dissipation structure has a heat pipe and a plurality of heat dissipation fins. The heat pipe has an outer-ring wall and a plurality of conical-ring groove arranged on the outer-ring wall. Each conical-ring groove has an inclined inner-ring wall. Each heat dissipation fin has a perforation and a conical-ring wall formed around an edge of the perforation. The heat dissipation fins are mounted onto the heat pipe at interval overlapping manner. Each conical-ring wall is embedded in each conical-ring groove and sleeved on each inclined inner-ring wall in a tight manner. Thereby, the heat dissipation structure has excellent heat dissipation efficiency and structural strength.

Description

Heat dissipation structure and manufacturing method thereof

The present invention relates to a heat dissipation structure including a heat pipe and a plurality of heat dissipation fins, and in particular to a heat dissipation structure and a manufacturing method thereof.

By the way, as the calculation speed of electronic components continues to increase, the heat generated by them is also getting higher and higher. In order to effectively solve the problem of high heat generation, the industry has designed various forms of heat dissipation devices to provide heat dissipation, but the existing heat dissipation There is still room for improvement in the practical application of the device.

The conventional heat dissipation device mainly includes a heat pipe, a heat conduction block and a plurality of heat dissipation fins. Dissipate heat from electronic components such as the CPU to the external environment through heat pipes and fins.

However, in the process of arranging the plurality of heat dissipation fins in series on the heat pipe, if each heat dissipation fin cannot be stably positioned on the heat pipe, the heat dissipation efficiency and structural strength of the heat dissipation device will be affected. Therefore, how to stably fix the cooling fins on the heat pipe is an urgent problem to be solved by the manufacturers of cooling devices.

In view of this, the inventor of the present invention aimed at the above-mentioned prior art, devoted himself to research and combined with the application of theories, and tried his best to solve the above-mentioned problems, which became the goal of the inventor's development.

The present invention provides a heat dissipation structure and a manufacturing method thereof, which utilizes each tapered ring wall to be embedded in each tapered ring groove and is socketed on each inclined inner ring wall in a pressing manner, so as to achieve excellent heat dissipation efficiency of the heat dissipation structure and structural strength.

In an embodiment of the present invention, the present invention provides a heat dissipation structure, comprising: a heat pipe having an outer ring wall, the outer ring wall is provided with a plurality of tapered ring grooves, each of the tapered ring grooves has an inclined inner ring wall; and a plurality of cooling fins, each of which is provided with a perforation and has a tapered ring wall formed on the outer periphery of the perforation, the plurality of cooling fins are sleeved on the heat pipe in a stacked manner at intervals, each The tapered ring wall is embedded in each of the tapered ring grooves and is tightly sleeved on each of the inclined inner ring walls; wherein, the heat pipe has a top end, and each of the inclined inner ring walls gradually approaches the top end. The height is lowered to be concave and inclined toward the inside of the heat pipe, each of the tapered ring grooves has an annular side wall disposed on one side of the inclined inner ring wall and adjacent to the top end, and the height of each of the annular side walls is between the 1/4 to 1/2 the thickness of the ring wall.

In an embodiment of the present invention, the present invention provides a method of manufacturing a heat dissipation structure, the steps of which include: a) providing a heat pipe, the heat pipe has an outer ring wall, and the outer ring wall is provided with a plurality of tapered ring grooves, each The inside of the tapered ring groove has an inclined inner ring wall, and the heat pipe has a top end, and each of the inclined inner ring walls gradually decreases in height toward the top end and slopes toward the inside of the heat pipe; b) providing a plurality of cooling fins, Each of the cooling fins is provided with a perforation and has a tapered ring wall formed on the outer periphery of the hole; c) the plurality of cooling fins are sleeved on the heat pipe through each of the through holes until each of the tapered ring walls Embedded in each of the tapered ring grooves and fastened to each of the inclined inner ring walls, so that the plurality of heat dissipation fins are spaced and stacked to pass through the heat pipe and d) provide an extrusion die, the extrusion The die extrudes each of the tapered ring walls, so that each of the tapered ring walls is tightly connected to each of the inclined inner ring walls, and each of the tapered ring walls The inside of the ring groove has an annular side wall arranged on one side of the inclined inner ring wall and adjacent to the top end, the height of each of the annular side walls is between 1/4 and 1/2 of the thickness of each of the tapered ring walls .

Based on the above, the heat pipe is provided with a plurality of tapered ring grooves, each heat dissipation fin has a tapered ring wall, and each tapered ring wall is embedded in each tapered ring groove and is sleeved on each inclined inner ring wall in a tight manner. Each tapered ring wall is thermally attached to each inclined inner ring wall, so that the heat of the heat pipe can be quickly transferred to the plurality of heat dissipation fins, and the plurality of heat dissipation fins can also be firmly positioned on the heat pipe to achieve a heat dissipation structure It has excellent heat dissipation efficiency and structural strength.

10: Heat dissipation structure

1: heat pipe

11: Outer ring wall

111: tapered ring groove

112: inclined inner ring wall

113: Annular side wall

12: top

2: cooling fins

21: perforation

22: tapered ring wall

23: Convex lapping piece

24: tenon

h: height

t: thickness

100: extrusion die

a~d: steps

FIG. 1 is a flow chart of the steps of the manufacturing method of the heat dissipation structure of the present invention.

Fig. 2 is a perspective view of the heat dissipation fins of the present invention to be sleeved on the heat pipe from the top of the heat pipe.

Fig. 3 is a cross-sectional view of the heat dissipation fin of the present invention to be sleeved on the heat pipe from the top of the heat pipe.

FIG. 4 is a perspective view of a plurality of heat dissipation fins of the present invention that have been sequentially sleeved on the heat pipe.

Fig. 5 is a perspective view of a plurality of cooling fins of the present invention that have been sleeved together on the heat pipe.

Fig. 6 is a sectional view of each tapered ring wall embedded in each tapered ring groove of the present invention.

Fig. 7 is a partially enlarged view of the place framed by the dotted line in Fig. 6 .

Fig. 8 is a cross-sectional view of the extrusion die of the present invention on each tapered ring wall.

The detailed description and technical content of the present invention will be described as follows with accompanying drawings, but the attached drawings are only for illustration purposes and are not intended to limit the present invention.

Please refer to FIG. 1 to FIG. 8 , the present invention provides a heat dissipation structure and its manufacturing method. The heat dissipation structure 10 mainly includes one or a plurality of heat pipes 1 and a plurality of heat dissipation fins 2 .

As shown in FIG. 1 , it is the steps of the manufacturing method of the heat dissipation structure 10 of the present invention, which are described in detail as follows. First, as shown in step a of Figure 1 and Figure 2, a heat pipe 1 is provided, the heat pipe 1 has an outer ring wall 11, and the outer ring wall 11 is provided with a plurality of tapered ring grooves 111, each tapered ring groove 111 inside It has an inclined inner ring wall 112 .

In addition, the heat pipe 1 has a top end 12 , and each inclined inner ring wall 112 gradually decreases in height toward the top end 12 and slopes toward the inside of the heat pipe 1 . Wherein, the number of heat pipes 1 in this embodiment is plural, but it is not limited thereto.

Second, as shown in step b of FIG. 1 and FIG. 2 , a plurality of cooling fins 2 are provided, and each cooling fin 2 is provided with a through hole 21 and has a tapered ring wall 22 formed on the outer periphery of the through hole 21 . Wherein, the number of through holes 21 provided on each cooling fin 2 is multiple, but not limited thereto.

In addition, the inner diameter of each tapered ring wall 22 is about 0.1mm less than the outer diameter of each inclined inner ring wall 112, as illustrated below, when the outer diameter of each inclined inner ring wall 112 is 8mm, each tapered ring wall 22 The inner diameter is about 7.9mm, but not limited thereto.

Third, as shown in step c of Figure 1, Figure 2 to Figure 7, a plurality of cooling fins 2 are sleeved on the heat pipe 1 through each through hole 21, until each tapered ring wall 22 is embedded in each tapered ring groove 111 and is fastened to each inclined inner ring wall 112, so that a plurality of cooling fins 2 are passed through the heat pipe 1 in an overlapping manner at intervals.

Furthermore, the outer peripheral edge of each cooling fin 2 extends upwards with a plurality of convex-shaped overlapping pieces 23 that are embedded with each other and extends outwards with a plurality of tenons that are inserted between each adjacent two convex-shaped overlapping pieces 23. 24, make the plurality of cooling fins 2 firmly overlap and stack together.

Also, as shown in Figure 4, a plurality of heat dissipation fins 2 can be sleeved on the heat pipe 1 in sequence from the top 12 of the heat pipe 1; Set on the heat pipe 1.

Fourth, as shown in step d of Figure 1 and Figure 8, an extrusion die 100 is provided, and the extrusion die 100 carries out extrusion operations to each tapered ring wall 22, so that each tapered ring wall 22 is compressed in a tight manner. It is sleeved on each inclined inner ring wall 112 .

The extrusion operation is that the extrusion die 100 extrudes each tapered ring wall 22 toward the direction of the heat pipe 1 , so that a portion of each tapered ring wall 22 embeds and tightens each annular side wall 113 .

In addition, each tapered ring groove 111 has an annular side wall 113 disposed on one side of the inclined inner ring wall 112 and adjacent to the top end 12. The height h of each annular side wall 113 is between the thickness t of each tapered ring wall 22. 1/4 to 1/2 of, but not limited to.

As shown in Figures 6 to 8, the use state of the heat dissipation structure 10 of the present invention is that the heat pipe 1 is provided with a plurality of tapered ring grooves 111, each heat dissipation fin 2 has a tapered ring wall 22, and each tapered ring wall 22 is embedded in each tapered ring groove 111 and is sleeved on each inclined inner ring wall 112 in a tight manner, so that each tapered ring wall 22 is closely thermally attached to each inclined inner ring wall 112, and then the heat of the heat pipe 1 It can be quickly transmitted to the plurality of heat dissipation fins 2 , and at the same time, the plurality of heat dissipation fins 2 can also be firmly positioned on the heat pipe 1 , so that the heat dissipation structure 10 has excellent heat dissipation efficiency and structural strength.

In addition, the extrusion die 100 extrudes each tapered ring wall 22 toward the direction of the heat pipe 1, so that the parts of each tapered ring wall 22 are more reliably embedded and tightened by each annular side wall 113, thereby further enhancing the heat dissipation efficiency of the heat dissipation structure 10 and structural strength.

To sum up, the heat dissipation structure of the present invention and its manufacturing method have never been seen in similar products and public use, and have industrial applicability, novelty and progress, and fully meet the requirements of patent application. Please file an application in accordance with the Patent Law. Dear Please check and grant the patent of this case to protect the rights of the inventor.

10: Heat dissipation structure

1: heat pipe

11: Outer ring wall

111: tapered ring groove

112: inclined inner ring wall

113: Annular side wall

12: top

2: cooling fins

21: perforation

22: tapered ring wall

Claims (5)

A heat dissipation structure, comprising: a heat pipe with an outer ring wall, the outer ring wall is provided with a plurality of tapered ring grooves, each of the tapered ring grooves has an inclined inner ring wall inside; and a plurality of heat dissipation fins, each The radiating fin is provided with a perforation and has a conical ring wall formed on the outer periphery of the perforation, the plurality of radiating fins are sleeved on the heat pipe in a stacked manner at intervals, and each of the conical ring walls is embedded in each of the cones. The annular groove is sleeved on each of the inclined inner ring walls in a pressing manner; wherein, the heat pipe has a top end, and each of the inclined inner ring walls gradually decreases in height toward the direction of the top end and slopes toward the inside of the heat pipe. The inside of the tapered ring groove has an annular side wall disposed on one side of the inclined inner ring wall and adjacent to the top end, and the height of each of the annular side walls is between 1/4 of the thickness of each of the tapered ring walls. Half. The heat dissipation structure as described in claim 1, wherein the outer peripheral edge of each of the heat dissipation fins extends upwards with a plurality of convex-shaped laps that are embedded with each other and extends outwards with two adjacent convex-shaped laps inserted into each Multiple tenons between pieces. A method for manufacturing a heat dissipation structure, the steps of which include: a) providing a heat pipe, the heat pipe has an outer ring wall, the outer ring wall is provided with a plurality of tapered ring grooves, each of the tapered ring grooves has an inclined inner ring wall, the heat pipe has a top, and each of the inclined inner ring walls gradually decreases in height toward the direction of the top and is inclined toward the interior of the heat pipe; b) providing a plurality of heat dissipation fins, each of which is provided with a through hole and has A tapered ring wall formed on the outer periphery of the perforation; c) the plurality of cooling fins are sleeved on the heat pipe through each of the perforations until each of the tapered ring walls is embedded in each of the tapered ring grooves and bundled close to each of the inclined inner ring walls, so that the plurality of cooling fins are spaced and overlapped to pass through the heat pipe; and d) An extrusion die is provided, and the extrusion die performs extrusion operation on each of the tapered ring walls, so that each of the tapered ring walls is sleeved on each of the inclined inner ring walls in a tight manner, and each of the The inside of the tapered ring groove has an annular side wall arranged on one side of the inclined inner ring wall and adjacent to the top end, and the height of each of the annular side walls is between 1/4 and 2/3 of the thickness of each of the tapered ring walls one. The manufacturing method of the heat dissipation structure according to claim 3, wherein in step c), the plurality of heat dissipation fins are sequentially or jointly sleeved on the heat pipe from the top end of the heat pipe. The manufacturing method of the heat dissipation structure as described in claim 3, wherein in step c), the outer peripheral edge of each heat dissipation fin extends upwards with a plurality of convex-shaped overlapping pieces that are embedded with each other and extends outwards with plugs in each phase Multiple tenons between two adjacent convex-shaped overlapping pieces.

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