TWI410601B - A large area of ​​cooling fins, and a radiator with the fins - Google Patents

Abstract

This invention relates to a large-area heat dissipation fin and its manufacturing method, and the heat sink having the same and its manufacturing method. The heat dissipation fin comprises a metal sheet, and a fin main body. The outer edge of one side of the fin main body is extended with a sheet-shaped expansion part, so that the expansion part can be bent toward the main body and stacked thereon to form the heat dissipation fin. The heat sink includes a plurality of heat dissipation fins and a heat conduction element, and is formed by inserting the condensing sections of the heat conduction element through each the heat dissipation fins in sequence.

Description

Large area heat sink fin and heat sink having the heat sink fin

The invention relates to a heat sink, in particular to a large-area heat-dissipating fin which can increase the heat-dissipating area of the stacked heat-dissipating fins, a manufacturing method thereof, and a heat-dissipating fin having the same.

According to the rapid upgrade of the computer industry, the operation speed of electronic components is increasing, and the heat generated by them is also increasing. Therefore, in order to maintain the electronic component to continue operating at its permitted temperature, it is a well-known technique to provide heat dissipation for the electronic heating element using a heat sink. In today's heat sinks, in addition to heat transfer elements that use vapor-liquid phase changes through a heat pipe to help the heat sink quickly achieve heat transfer, the heat sink fins that pass through the condensing end of the heat-conducting element also affect heat dissipation. One of the important factors of good efficiency.

In the past, aluminum extruded heat sinks were limited by the manufacturing technology, so that the heat sink fins must have a certain thickness and spacing, and there is a stacked heat sink. Stacked heat sinks are mainly made up of a plurality of heat-dissipating fins formed by stamping. Since the thickness can be thinner and the spacing between the fins can be denser, the heat dissipation area can be greatly increased, and the heat dissipation effect can be improved. At this point, if you want to further increase the fin area of the stacked heatsink, in addition to increasing its size to increase the area, the fins are shaped like waves to increase the area, but the increase can still be limited. And often accompanied by an increase in volume, it is considered to reach a bottleneck.

In view of the above, the present inventors have made an effort to improve and solve the above-mentioned shortcomings, and have devoted themselves to research and cooperate with the application of the theory, and finally proposed a present invention which is reasonable in design and effective in improving the above-mentioned defects.

The main purpose of the present invention is to provide a large-area heat dissipation fin and a manufacturing method thereof, and a heat sink having the same, which can further utilize the bending without significantly increasing the occupied volume. And stacking means to greatly increase the area of the heat dissipating fins, and to form a heat sink by having such a large area of fins. In order to improve the heat dissipation efficiency of the heat sink fins or heat sinks.

In order to achieve the above object, the present invention provides a large-area heat-dissipating fin having a fin body extending from a peripheral portion of one side of the fin body to form a sheet-like amplifying portion, and the amplifying portion is bent Stacked on the fin body.

In order to achieve the above object, the present invention provides a method for manufacturing a large-area heat dissipation fin, the steps of which are as follows:

a) preparing a metal piece having a fin body extending from the outer edge of one side of the fin body into a sheet-like amplifying portion;

b) The amplifying portion is bent and folded toward the fin body to constitute one of the heat dissipating fins.

In order to achieve the above object, the present invention provides a heat sink having a large area of heat sink fins, including a plurality of heat sink fins, and a heat conducting component having a segment heat segment and a condensation section; wherein each heat sink fin has a fin The sheet body has a sheet-like amplifying portion extending from an outer edge of the fin body, and the amplifying portion is bent and stacked on the fin body, and each of the heat dissipating fins is provided with a corresponding perforation. The condensation section of the heat-conducting element is inserted through the perforations of the heat-dissipating fins so that the heat-dissipating fins are stacked on the condensation section of the heat-conducting element.

In order to achieve the above object, the present invention provides a method for manufacturing a heat sink having a large area of heat dissipation fins, the steps of which are as follows:

a) preparing a heat-conducting element and a plurality of heat-dissipating fins, the heat-conducting element having a heated section and a condensing section, and each of the heat-dissipating fins has a fin body extending from the outer edge of the fin body to form a sheet-like amplifying part ;

b) bending the overlapping portions of the heat dissipation fins toward the fin body thereof to overlap;

c) punching perforations on each of the heat dissipation fins;

d) The heat-dissipating fins are sequentially passed through the fused section of the heat-conducting element with their perforations.

The detailed description of the present invention and the accompanying drawings are to be understood by the accompanying claims .

The invention provides a large-area heat dissipation fin and a preparation method thereof. As shown in the first figure and the second figure, respectively, it is a flow chart of the heat dissipation fin manufacturing method of the present invention and an external view of the first embodiment. The heat dissipating fin 1 has a fin body 10 made of a metal material having good heat dissipation, and a sheet-like amplifying portion 11 is extended on the outer edge of the fin body 10 to transmit and expand. The portion 11 increases the heat dissipation area of the heat dissipation fins 1 , and the amplification portion 11 is bent and stacked on the fin body 10 , so that the heat dissipation area can be increased without significantly increasing the volume occupied by the fins 11 . purpose.

Please refer to step S10 of the first figure together with the third figure: First, prepare a metal piece made of a metal material with good heat dissipation, and use it to make the above-mentioned heat dissipation fin 1 . The metal sheet can be formed into a developed shape as shown in FIG. 3 by means of stamping or the like to have a fin body 10 and a sheet-like portion extending from at least one outer edge of the fin body 10. The amplification unit 11 is described.

Referring to step S20 of the first figure together with the fourth figure, the amplifying portion 11 is bent toward the fin body 10 so that the amplifying portion 11 is stacked on the fin body 10; In the step, the fin body 10 and the amplifying portion 11 are integrally connected with an inverted meandering curved arc segment 100 so as to have a gap between the fin body 10 and the amplifying portion 11 for the amplification portion 11 The surface area can be used as a heat sink. In the embodiment, the amplifying portion 11 includes a first extending portion 110, a perforating portion 111, and a second extending portion 112. The first extending portion 110 is formed by the fin body 10 side. The outer edge extends and is integrally connected with the fin body 10 to the curved arc segment 100. The gap between the fin body 10 and the fin portion 10 is also the first extension portion 110 of the amplifying portion 11.

As described above, the perforated section 111 of the amplifying portion 11 is extended from the end edge of the first extending portion 110, and the perforating portion 111 is attached to the fin body 10. . As shown in FIG. 5, a perforation punch 4 is punched through the perforating section 111 at a position corresponding to the fin body 10; and in the embodiment of the present invention, the punching is performed through the perforation. The head 4 is penetrated from the opposite side of the fin body 10 to form an outer circumference 13 on the perforated section 111, and the fin body 10 defines an inner circumference 12 opposite to the outer circumference 13 A desired perforation 14 is formed in the inner and outer circumferences 12, 13 for facilitating subsequent heat conduction member wear. Conversely, the perforating punch 4 can also be inserted through the perforating section 111 such that the inner circumference 12 is formed on the perforating section 111, and the outer circumference 13 is formed on the fin body 10, The perforations 14 can likewise be formed.

As described above, the second extension 112 of the amplifying portion 11 is extended from the end edge of the perforating section 111, and the heat dissipating area of the heat dissipating fin 1 can be further increased, and the second extending section 112 is Tilting up from the fin body 10 so as not to be in contact with the fin body 10, the second extension portion 112 can have more surface area to be in contact with the air, and the heat dissipation area is used.

In the embodiment of the present invention, the amplifying portion 11 is extended on the outer edges of the two sides of the fin body 10, so that the length of the amplifying portion 11 can be shorter. One half of the fin body 10; or, if the amplifying portion 11 is provided on one side, the length of the amplifying portion 11 may be shorter than the fin body 10.

In addition, as shown in the sixth figure, it is a partial cross-sectional view of the second embodiment of the heat dissipation fin of the present invention. The heat dissipating fin 1 may also be provided with the inner ring 12 and forming the through hole 14 on the fin body 1 when the amplifying portion 11 has only the first extending portion 110. The sample is also available for subsequent penetration of the thermally conductive element.

In addition, the present invention also provides a heat sink having the heat sink fin and a method of fabricating the same. As shown in the seventh, eighth and ninth drawings, respectively, it is a flow chart of the heat sink manufacturing method of the present invention, and a perspective exploded view and a combined view of the first embodiment. The heat sink includes a plurality of the heat dissipating fins 1 and at least one heat conducting element 2, and the through holes 14 of the heat dissipating fins 1 are sequentially disposed on the heat conducting element 2, thereby forming a heat dissipating fin. The heat sink of the film can also increase the heat dissipation area of the heat sink fin 1 without significantly increasing the volume occupied by each heat sink fin 1 .

Please refer to step S11 of the seventh figure together with the fourth figure. First, at least one of the above heat conducting elements 2 and a plurality of the above heat radiating fins 1 are prepared. Since the heat dissipation fin 1 has been previously described, it will not be described again; and the heat conduction element 2 may be a heat pipe or a Vapor chamber, and has a heat receiving section 20 and at least one condensation section 21. In the present embodiment, the heat-conducting element 2 is a heat pipe and is in the shape of a U-shape, so that the bottom portion of the U-shape is a heat-receiving section 21 and has a "U" shape. At the two ends of the type, a condensation section 21 is formed.

Referring to step S21 of the seventh figure together with the fourth figure, the amplifying portion 11 of each fin 1 is bent toward the fin body 10 so that the amplifying portion of each fin 1 is expanded. 11 is stacked on the fin body 10; since this step is the same as the method of the heat sink fin 1 described above, only the number of the heat dissipating fins 1 is plural, and the rest are the same, and therefore will not be described herein.

Please refer to step S31 of the seventh figure together with the foregoing fifth figure: the through holes 14 are punched on the heat dissipating fins 1 formed, and the through holes 14 on the heat dissipating fins 1 are correspondingly arranged; This step can be seen in the previous description.

Please refer to the step S41 of the seventh figure together with the eighth figure: the heat dissipation fins 1 are sequentially arranged with the through holes 14 penetrating the condensation section 21 of the heat conduction element 2 to form a Said radiator (ie as shown in Figure IX). In addition, in order to make the heat-receiving section 20 of the heat-conducting element 2 easier to face-to-face contact with the heat source (not shown), please refer to the eighth to tenth drawings together, the heat sink may further include a base 3 The base 3 is disposed on the heat receiving section 20 of the heat conducting component 2 for heat transfer connection, and a groove 30 for burying the heat receiving section 20 of the heat conductive component 2 is recessed on the bottom surface of the base 3 for heating the heat conductive component 2 The segment 20 can also be exposed on the bottom surface of the base 3, and can be directly in contact with the heat source (not shown).

Further, as shown in Fig. 11, a cross-sectional view of a second embodiment of the heat sink of the present invention is shown. When the heat dissipating fins 1 have the amplifying portion 11 on only one side, the fins 1 may be arranged in a staggered manner to facilitate stacking.

Further, as shown in Fig. 12, it is a cross-sectional view showing a third embodiment of the heat sink of the present invention. Wherein, the heat conducting element 2 is a temperature equalizing plate, and the through holes 14 are also matched thereto; and the remaining structural forms are the same as described above.

In summary, the present invention can achieve the intended use purpose, and solve the lack of the conventional, and because of the novelty and progress, fully meet the requirements of the invention patent application, and apply according to the patent law, please check and The patent in this case is granted to protect the rights of the inventor.

However, the above description is only a preferred embodiment of the present invention, and thus the scope of the present invention is not limited thereto, and the equivalent techniques and means, etc., which are used in the description of the present invention and the contents of the drawings, are the same. It is included in the scope of the present invention and is combined with Chen Ming.

<present invention>

1. . . Heat sink fin

10. . . Fin body

100. . . Curved arc

11. . . Amplification department

110. . . First extension

111. . . Perforated section

112. . . Second extension

12. . . Inner circle

13. . . Outer ring

14. . . perforation

2. . . Thermal element

20. . . Heated section

twenty one. . . Condensation section

3. . . Base

30. . . Trench

4. . . Punch punch

S10, S20. . . step

S11, S21, S31, S41. . . step

The first figure is a flow chart of the heat dissipation fin manufacturing method of the present invention.

The second drawing is an external view of the first embodiment of the heat dissipating fin of the present invention.

The third figure is a development view of the first embodiment of the heat sink fin of the present invention.

The fourth figure is an action diagram of the first embodiment of the heat dissipating fin of the present invention.

Fig. 5 is a motion diagram of the first embodiment of the heat dissipating fin of the present invention.

Figure 6 is a partial cross-sectional view showing a second embodiment of the heat dissipating fin of the present invention.

Figure 7 is a flow chart of the heat sink manufacturing method of the present invention.

Figure 8 is a perspective exploded view of a first embodiment of the heat sink of the present invention.

Figure 9 is a perspective assembled view of a first embodiment of the heat sink of the present invention.

Figure 10 is a cross-sectional view showing a first embodiment of the heat sink of the present invention.

Figure 11 is a cross-sectional view showing a second embodiment of the heat sink of the present invention.

Figure 12 is a cross-sectional view showing a third embodiment of the heat sink of the present invention.

1. . . Heat sink fin

10. . . Fin body

100. . . Curved arc

11. . . Amplification department

110. . . First extension

111. . . Perforated section

112. . . Second extension

12. . . Inner circle

13. . . Outer ring

14. . . perforation

Claims (18)

A large-area heat-dissipating fin having a fin body extending from a periphery of one side of the fin body to form a sheet-like amplifying portion, the amplifying portion being bent and stacked on the fin body Wherein the amplifying portion has a first extending portion, and a curved portion is integrally connected between the fin body and the first extending portion such that the fin body and the amplifying portion have a a gap, the amplification portion further extending a perforation section from the end edge of the first extension portion, the perforation section is attached to the fin body, and the amplification section is further by the end of the perforation section The rim extends a second extension, and the second extension is tilted up by the fin body. The large-area heat-dissipating fin of the first aspect of the invention, wherein the fin body and the amplifying portion are integrally connected with an inverted meandering curved portion to make the fin body and the expanded portion There is a gap between the additions. The large-area heat-dissipating fins of claim 1, wherein the length of the amplifying portion extends shorter than the fin body. The large-area heat-dissipating fin of the first aspect of the invention, wherein the perforated section is provided with an outer circumference, and the fin body is provided with an inner circumference opposite to the outer circumference A perforation is formed in the inner and outer circumferences. The large-area heat-dissipating fin of the first aspect of the invention, wherein the perforated section is provided with an inner circumference, and the fin body is provided with an outer circumference of the inner ring A perforation is formed in the inner and outer circumferences. The large-area heat-dissipating fin of claim 1, wherein the outer edge of the other side of the fin body extends another sheet-like amplifying portion, and the other amplifying portion is also bent. Stacked on the fin body. The large-area heat-dissipating fins of claim 6, wherein the length of the two-amplified portion is shorter than one half of the fin body. A heat sink having a large area of heat dissipating fins includes: a plurality of fins each having a fin body extending from a peripheral portion of the fin body to a sheet-like amplifying portion The amplifying portion is bent and stacked on the fin body; and a heat conducting member has a heating section and a condensation section; wherein each of the heat dissipating fins is provided with a corresponding perforation, and the heat conducting component is condensed The segments are disposed in the perforations of the heat dissipating fins such that the heat dissipating fins are stacked on the condensation section of the heat conducting element, and the amplifying portions of each of the heat dissipating fins have a first extending portion, and An arcing segment is integrally connected between the fin body and the first extending portion, so that a gap is formed between the fin body and the amplifying portion, and the amplifying portion of each of the heat dissipating fins is further The end of the first extension extends a perforation section, and the perforation section is attached to the fin body, and the perforation is located at a position corresponding to the fin body. The amplifying portion of the fin further extends from the end edge of the perforated section to a second Extending section, said second extension based on the inclination of the fin body looked up. Large-area heat-dissipating fins as described in claim 8 The heat sink of the sheet, wherein the fin body of each of the heat dissipating fins and the amplifying portion thereof are integrally connected with an inverted meandering curved section so as to have a gap between the fin body and the amplifying portion. The heat sink having a large-area heat-dissipating fin according to claim 8 , wherein the length of each of the heat-dissipating fins extends shorter than the fin body. The heat sink having a large-area heat-dissipating fin according to claim 8, wherein the perforated section is provided with an outer circumference, and the fin body is disposed opposite to the outer circumference. Circumference to form the perforations in the inner and outer circumferences. The heat sink having a large-area heat-dissipating fin according to claim 8, wherein the perforated section is provided with an inner circumference, and the fin body is provided with a relatively outer outer circumference. Circumference to form the perforations in the inner and outer circumferences. A heat sink having a large area of heat dissipating fins as described in claim 8 wherein the heat dissipating fins are staggered. The heat sink having a large-area heat-dissipating fin according to claim 8, wherein the outer edge of the other side of the fin body of each of the heat-dissipating fins extends another sheet-like amplifying portion, and the other An amplifying portion is also bent and stacked on the fin body. The heat sink having a large-area heat dissipation fin according to claim 14, wherein the length of the two amplification portions is shorter than one half of the fin body. The heat sink having a large-area heat-dissipating fin according to claim 8, wherein the heat-conducting element is a heat pipe or a temperature equalizing plate. The heat sink having a large-area heat-dissipating fin according to claim 8 further includes a base disposed on the heated portion of the heat-conducting element. The heat sink having a large-area heat-dissipating fin according to claim 17, wherein the bottom surface of the base is recessed with a groove, and the heated portion of the heat-conducting element is buried in the groove.