TWI401406B - Method of producing heat dissipating fin and structure thereof and method of producing heat dissipating device comprising the heat dissipating fin and structure thereof - Google Patents

Description

Heat sink fin and manufacturing method thereof, and large area heat sink having the same Method

The present invention relates to a heat sink, and more particularly to a heat sink having a large heat dissipation area.

In general, electronic components generate heat when they operate. Especially with the advancement of technology, the function and performance of electronic products are greatly improved, and the heat generated inside them is greatly increased. For this reason, most electronic components are required to be equipped. A heat dissipating device is provided to maintain the normal operation of the electronic component by controlling the operating temperature. Among them, a heat sink having a heat pipe is disposed in a plurality of stacked heat dissipating fins, which is a common heat dissipating device.

Please refer to the first figure, which is a conventional heat pipe and heat sink fin. The heat sink 1a includes a heat conducting base 10a, two U-shaped heat pipes 20a and a plurality of fins 30a. The heat conducting base 10a is provided with a plurality of grooves 11a, and the two U-shaped heat pipes 20a are embedded. In the trenches 11a, a plurality of fins 30a provided with perforations are sleeved on the heat pipe 20a. Accordingly, the heat conducting base 10a is attached to a heat-generating electronic component, and the heat sink 1a can be guided away. The heat generated by the heat-generating electronic component.

In the above structure, the heat is conducted from the heat pipe 20a to the fins 30a, and the heat is quickly dissipated by the fins 30a; however, the heat pipes 20a do not uniformly conduct heat to the fins 30a. In the whole, on the fin 30a, the heat dissipation efficiency from the heat pipe 10a is not high; in addition, as the performance of the electronic component is continuously improved, the heat generated by the heat sink is increased, so the heat dissipation performance of the heat sink is also required. Constantly improving, light and thin in today's products Under the limitation of the compact appearance, how to expand the heat dissipation area of the heat sink 1a as much as possible in a limited space, thereby improving the heat dissipation efficiency, is a problem to be solved by the inventors.

In view of the above, the present inventors have made great efforts to improve and solve the above-mentioned shortcomings, and have finally made a proposal to rationally and effectively improve the above-mentioned defects.

The main purpose of the present invention is to provide a fin and a large-area heat sink, which can add a heat sink in a limited space, and allow the fin and the heat sink to simultaneously dissipate heat from the heat-generating component, thereby improving heat dissipation. effectiveness.

In order to achieve the above object, the present invention is a method for manufacturing a large-area heat sink, the steps of which include: a) providing a plurality of fins and a heat pipe; b) cutting each of the fins to form a plurality of the fins respectively. a cutting line, the cutting lines forming at least one cymbal; c) folding the cymbal to superimpose the cymbal on the fin, and forming a receiving hole on the fin; d) the fin and the The cymbal is punched to form overlapping two perforations; e) the fin and the cymbal are pierced by the heat pipe; and f) according to the step e), the other fins are sequentially placed on the On the heat pipe.

In order to achieve the above object, the present invention is a large-area heat sink comprising a heat pipe and a plurality of fins, the plurality of fins being arranged in parallel and spaced apart to form a heat pipe, the fins being provided with a cymbal piece, and the cymbals are reflexed. The fins are stacked on the fins to form a receiving hole on the fins, and the folded flaps and the fins are provided with overlapping two perforations, and the two perforations are provided for the fins to be sleeved on the heat pipe.

In order to achieve the above object, the present invention is a method for manufacturing a heat dissipating fin, the steps of which include: a) providing a fin; b) cutting the fin to form a plurality of cutting lines thereon, the cutting lines Forming at least one cymbal; c) folding the cymbal to stack it on the fin, forming a receiving hole on the fin; and d) punching the fin and the cymbal to Forming overlapping two perforations.

In order to achieve the above object, the present invention is a heat dissipating fin, the fin is provided with a cymbal, and the cymbal is folded over and stacked on the fin to form a receiving hole on the fin. The gusset and the fin are provided with overlapping two perforations.

Compared with the prior art, since the fin of the present invention is provided with a folded sheet and formed with a receiving hole, the present invention does not require an additional space under the same limited space, and the heat sink is not only provided with the heat sink. It has a plurality of fins and can be further placed with a heat sink in the receiving holes of the fins. Compared with the conventional heat sink, it has more and larger heat dissipation area, because the fins and the heat dissipation system are simultaneously Since the heat generating component dissipates heat, the heat dissipation efficiency of the heat sink can be improved, and the utility of the present invention can be increased.

The detailed description and technical content of the present invention are set forth in the accompanying drawings.

Please refer to FIG. 2 and FIG. 3 respectively, which are respectively a manufacturing flow chart and a combination diagram of the large-area heat sink of the present invention. First, a heat-conductive base 20, a heat sink 30 and a plurality of fins provided with a heat pipe 10 are provided. 40 (step 100).

In this embodiment, three U-shaped heat pipes 10 are provided, but not limited to the number and type. The bottom surface of the heat-conducting base heat-conducting base 20 is provided with three grooves 21 corresponding to the number of heat pipes 10, and the three The heat pipe 10 is embedded in the groove 21, and the heat sink 30 can be an aluminum extruded fin having a base 31 and a plurality of extending pieces 32 extending upward from the base 31. The extending pieces 32 The channels are formed in parallel and spaced apart. A channel 300 is formed between any two extension sheets 32. Further, the fins 40 are disposed on the heat pipes 10.

Referring to FIG. 4A to FIG. 4D again, the method for manufacturing the fin 40 is shown. First, the fin 40 is cut by a tool (step 200) to form on the fin 40. A plurality of cutting lines 41 are formed on the fins 40 by the cutting lines 41. If the cutting lines 41 are formed in a U shape, a fin shape can be formed on the fins 40. The cymbal piece 42 can be formed on the fin 40 by a cymbal 42 on the left and right sides of the fin 40.

Referring to FIG. 4B, the cymbal sheet 42 is folded back to overlap the cymbal 42 on the fin 40. A hollow flow channel 420 is formed between the folded slab 42 and the fin 40. The hollow flow channel 420 is configured to allow the airflow to flow through the tropics, and a receiving hole 400 is formed in the fin 40 (step 300). Then, the fin 40 and the cymbal 42 are punched to Forming the overlapping two perforations 401, 421 (step 400), in the embodiment, the step 400 is performed after the step 300, that is, the embodiment is the fin 40 and the crucible folded thereon The sheet 42 is simultaneously punched. On the other hand, the step 400 can also be performed before the step 300, that is, before the step 400, the fin 40 and the The cymbals 42 are respectively punched to form the overlapped two through holes 401 and 421, and then the step 300 is performed, and the cymbal sheet 42 is folded back to be superposed on the fins 40, so that the two through holes 401 and 421 are overlapped. Subsequently, the periphery of the overlapping two perforations 401, 421 can be further compressed by a tool 50 to form overlapping two flanges 402, 422 around the circumference of the two perforations 401, 421.

Aligning the fins 40 and the two through holes 401 and 422 of the cymbal 42 to the heat pipe 10 to lay the fin 40 thereon (step 500), wherein the base 31 of the heat sink 30 is disposed The top surface of the heat conducting base 20 is received in the receiving hole 400 of the fin 40.

Please refer to FIG. 5 to FIG. 7 , which are respectively a perspective view of the heat sink of the present invention and two cross-sectional views thereof; then, according to the above steps, the other fins are sequentially sleeved on the heat pipes 10 (steps). 600), in order to complete a heat sink 1, as can be seen from the figure, the flange 402 of the through hole 401 of the fin 40 is closely attached to the outer wall of the heat pipe 10 (except for the shrink pipe section 101 of the heat pipe 10), and The extensions 32 of the heat sink 30 are mostly accommodated in the receiving holes 400 of the stacked fins 40. Further, the channels 300 of the heat sink 30 are in communication with each other.

Please refer to the eighth figure, which is a schematic diagram of the use of the large-area heat sink of the present invention; when the heat sink 1 is used for heat dissipation of a heat-generating electronic component 60, the heat-conducting base 20 and the heat pipe 10 at the bottom thereof are attached thereto. The heat generated by the heat-generating electronic component 60 is transmitted to the heat-conducting base 20 and the heat pipe 10, and heat is re-conducted to the fins 40 via the heat pipe 10, and conduction is conducted on the other hand. The heat system to the heat conducting base 20 is re-conducted to the heat sink 30, and the heat is dissipated to the mutually circulated passages via the extending pieces 32. In the 300, the fins 40 and the heat sink 30 simultaneously dissipate heat from the heat-generating electronic component 60, and discharge heat one by one, thereby reducing the temperature of the heat-generating electronic component 60, thereby preventing heat from being accumulated in the heat-generating electronic component 60. The heat dissipation efficiency of the heat sink 1 is improved.

Please refer to the ninth embodiment, which is a second embodiment of the large-area heat sink of the present invention; the embodiment is substantially the same as the first embodiment, and the difference is that the heat sink 1' is not provided with a heat conducting seat, and The fin 40' is provided with a flat heat pipe 10'. The fin 40' is provided with a second piece 42' and is formed with a receiving hole 400'. The receiving hole 400' is also accommodated therein. Heat sink 30'.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and other equivalent variations of the patent spirit of the present invention are all within the scope of the invention.

<知知>

1a‧‧‧heatsink

10a‧‧‧thermal seat

11a‧‧‧ trench

20a‧‧‧heat pipe

30a‧‧‧Fins

<present invention>

1‧‧‧heatsink

10‧‧‧heat pipe

101‧‧ ‧ shrinkage section

20‧‧‧heating seat

21‧‧‧ trench

30‧‧‧ Heat sink

300‧‧‧ channel

31‧‧‧Base

32‧‧‧Extension

40‧‧‧Fins

400‧‧‧ accommodating holes

401‧‧‧Perforation

402‧‧‧Flange

41‧‧‧ cutting line

42‧‧‧ Picture

421‧‧‧Perforation

422‧‧‧Flange

50‧‧‧ Tools

60‧‧‧Fever electronic components

1'‧‧‧ radiator

10'‧‧‧ flat heat pipe

30'‧‧‧ heat sink

40’‧‧‧Fins

400’‧‧‧ 容孔

42’‧‧‧ Pictures

100~600‧‧‧Steps

The first figure is a schematic diagram of a combination of a conventional heat pipe and a heat sink fin; the second figure is a manufacturing flow chart of the large area heat sink of the present invention; the third figure is a combined schematic view of the large area heat sink of the present invention; The cutting of the fin of the present invention; the fourth drawing B is the reflex of the fin of the fin of the invention; the fourth drawing C is the punching of the fin and the cymbal of the invention; and the fourth drawing D is the fin of the invention The fifth drawing is a perspective view of the heat sink of the present invention; the sixth drawing is a longitudinal sectional view of the heat sink of the present invention; and the seventh drawing is a transverse sectional view of the heat sink of the present invention; Is a schematic diagram of the use of the heat sink of the present invention; The ninth diagram is a second embodiment of the heat sink of the present invention.

1‧‧‧heatsink

10‧‧‧heat pipe

101‧‧ ‧ shrinkage section

20‧‧‧heating seat

21‧‧‧ trench

30‧‧‧ Heat sink

31‧‧‧Base

32‧‧‧Extension

40‧‧‧Fins

400‧‧‧ accommodating holes

402‧‧‧Flange

42‧‧‧ Picture

420‧‧‧hollow runner

422‧‧‧Flange

Claims (26)

A method for manufacturing a large-area heat sink, the steps comprising: a) providing a plurality of fins and a heat pipe; b) cutting each of the fins to form a plurality of cutting lines on the fins, the cutting lines forming at least one a crotch piece; c) reflexing the crotch piece to be superposed on the fin, and forming a receiving hole on the fin; d) punching the fin and the crotch piece to form an overlapping second Perforating; e) arranging the fin and the second piece of the gusset through the heat pipe; and f) according to the step e), sequentially arranging the other fins on the heat pipe. The manufacturing method of the large-area heat sink of claim 1, wherein in the step b), the cutting lines form a U-shape on each of the fins to form a cymbal on the fin. The manufacturing method of the large-area heat sink of claim 1, wherein in the step b), the cutting lines form an I-shape on each of the fins to form a double-shaped piece on the fin. The method for manufacturing a large-area heat sink according to claim 1, wherein in the step c), a hollow flow path is formed between the re-folded rafter and the fin. The method for manufacturing a large-area heat sink according to Item 1, wherein the step d) is performed after the step c), and in the step c), the sheet is folded back to be stacked thereon. On the fin, in the step d), the fin and the cymbal stacked thereon are simultaneously punched. The method for manufacturing a large-area heat sink according to claim 1, wherein the step d) is performed before the step c), and the fin and the cymbal are respectively punched in the step d) To form the overlapable two perforations, and then perform the step c), re-folding the crotch to stack it on the fin, and overlapping the two perforations. The method for manufacturing a large-area heat sink according to Item 1, wherein the step d) and the step e) further comprise a step of d'), wherein the step d') is to press the two perforations. The periphery is such that the peripheral edges of the two perforations form overlapping flanges. The method of manufacturing a large-area heat sink according to claim 7, wherein in the step f), the perforated flange of the fin is attached to the outer wall of the heat pipe. The method for manufacturing a large-area heat sink according to claim 1, further comprising a step of providing a heat sink, the heat sink being received in the receiving hole of the fin. The method for manufacturing a large-area heat sink according to claim 1, further comprising a step h), wherein a heat conducting seat is provided, and the heat pipe is embedded in the heat conduction. A large-area heat sink includes: a heat pipe; and a plurality of fins arranged in parallel and spaced apart to sleeve the heat pipe, the fin being provided with a cymbal, the cymbal being folded over and stacked on the fin A venting hole is formed on the fin, and the gusset and the fin are folded to have two overlapping holes, and the two holes are provided for the fin to be sleeved on the heat pipe. The large area heat sink of claim 11, wherein a hollow flow path is formed between the folded piece and the fin. The large-area heat sink of claim 11, wherein the circumference of the two perforations is provided with overlapping two flanges. The large-area heat sink of claim 13, wherein the flange of the fin is in close contact with the outer wall of the heat pipe. The large-area heat sink of claim 11, further comprising a heat dissipating body disposed in the receiving hole of the fins. The large-area heat sink of claim 11, further comprising a heat-conducting seat for inserting the heat pipe. A method for manufacturing a heat dissipating fin, the steps comprising: a) providing a fin; b) cutting the fin to form a plurality of cutting lines thereon, the cutting lines forming at least one cymbal; c) reflexing The cymbal is stacked on the fin, and a receiving hole is formed on the fin; and d) the fin and the cymbal are punched to form overlapping two perforations. The method for manufacturing a heat dissipating fin according to claim 17, wherein in the step b), the cutting lines are cut into a U-shape on the fin to form a cymbal on the fin. The method for manufacturing a heat dissipating fin according to claim 17, wherein in the step b), the cutting lines are formed on the fin to form an I-shaped shape to form a two-piece piece on the fin. The method for manufacturing a heat sink fin according to claim 17, wherein in the step c), a hollow flow path is formed between the folded sheet and the fin. The method for manufacturing a heat sink fin according to claim 17, wherein the step d) is performed after the step c), and before the step c), the sheet is folded back to be stacked thereon. On the fin, in the step d), the fin and the cymbal stacked thereon are simultaneously punched to form overlapping two perforations. The method for manufacturing a heat sink fin according to Item 17, wherein the step d) is performed before the step c), and the fin and the die are respectively punched in the step d). To form the overlapable two perforations, the c) step is performed, and the crotch piece is folded back to be stacked on the fin, and the two perforations are overlapped. The method for manufacturing a heat sink fin according to Item 17, wherein the step d) further comprises a step of compressing the circumference of the two perforations for the two perforations. The circumference forms an overlapping two flanges. a heat dissipating fin, the fin is provided with a cymbal, the cymbal is folded over and stacked on the fin, so that a receiving hole is formed on the fin, and the cymbal and the fin are reversely folded There are two perforations that overlap. The heat dissipation fin of claim 24, wherein a hollow flow path is formed between the folded piece and the fin. The heat sink fin of claim 24, wherein the two perforations are provided with overlapping flanges.