CN107155283B

CN107155283B - Multi-angle radiating fin forming method and radiator

Info

Publication number: CN107155283B
Application number: CN201710398357.3A
Authority: CN
Inventors: 曾昭文
Original assignee: Kunshan Jianghong Precision Technology Co ltd
Current assignee: Kunshan Jianghong Precision Technology Co ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2023-04-18
Anticipated expiration: 2037-05-31
Also published as: CN107155283A

Abstract

The invention discloses a multi-angle radiating fin forming method and a radiator. The multi-angle radiating fin forming method is characterized in that a radiating fin blank with an inclined buckling part is drawn and inclined to obtain an arc-shaped radiating fin blank, then the radiating fin blank is bent to obtain a radiating fin with a buckling flanging, and the radiating fins with the buckling flanging are mutually buckled to obtain the multi-angle radiating fin group. The multi-angle radiating fin group comprises a plurality of radiating fins, and the radiating fins are connected in a multi-angle mode through the buckling riveting blocks. At least one heat pipe through hole is formed in the radiating fin. According to the radiator manufactured by the multi-angle radiating fin forming method, a certain included angle is formed between the radiating fin main bodies, and included angles are formed at the air inlet and the air outlet, so that the internal space of the radiator is increased, the heat convection effect is enhanced, the heat conduction performance is improved due to the arrangement of the through hole folding edges of the heat pipe, and the radiating efficiency is further improved.

Description

Multi-angle radiating fin forming method and radiator

Technical Field

The invention relates to the technical field of radiating fins, in particular to a forming method of a multi-angle radiating fin group and a radiator.

Background

Each fin in existing heat sinks is typically identical in shape and size, and the fins are typically arranged perpendicular to the substrate or at a fixed angle to the substrate. The general method for forming the radiator comprises the following steps: A. punching a guide hole, namely punching the guide hole on the surface of the conveyed material belt according to a preset distance; B. shearing the material belt, and shearing the material belt required by each fin blank; C. shearing the radiating fin blanks, obtaining a bending expansion coefficient according to the material, the plate thickness and the bending inner diameter of the radiating fins, and shearing the material belt required by each radiating fin blank according to the bending expansion coefficient to obtain the radiating fin blanks; D. a buckling part of the oblique radiating fin blank; E. bending the radiating fins in a non-angle plane to obtain radiating fins with fixed shapes; F. connecting the radiating fins, and buckling the buckling parts of the adjacent radiating fins with the buckling riveting blocks to obtain radiating fin groups; G. and welding the radiating fin group on the substrate to obtain the radiator.

The radiator manufactured by the existing method for forming the radiating fin group has the following defects:

1) The radiating fins with a planar structure can only be manufactured, and the radiating fins are arranged on the substrate in a single mode, so that the appearance of the radiating fin group cannot meet the requirement of customers on attractiveness;

2) The distance between the radiating fins is small, and the heat convection efficiency inside the radiating fins is influenced, so that the radiating effect is poor.

Each fin in existing heat sinks is typically identical in shape and size, and the fins are typically arranged perpendicular to the substrate or at a fixed angle to the substrate. The general method for forming the radiator comprises the following steps: A. punching a guide hole, namely punching the guide hole on the surface of the conveyed material belt according to a preset distance; B. cutting the material belt, and cutting the material belt required by each radiating fin blank; C. shearing the radiating fin blanks, obtaining a bending expansion coefficient according to the material, the plate thickness and the bending inner diameter of the radiating fins, and shearing the material belt required by each radiating fin blank according to the bending expansion coefficient to obtain the radiating fin blanks; D. a buckling part of the oblique radiating fin blank; E. bending the radiating fins in a non-angle plane to obtain radiating fins with fixed shapes; F. connecting the radiating fins, and buckling the buckling parts of the adjacent radiating fins with the buckling riveting blocks to obtain radiating fin groups; G. and welding the radiating fin group to the substrate to obtain the radiator.

Therefore, how to provide a method for forming a set of fins and a heat sink that can solve the above-mentioned disadvantages is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a multi-angle radiating fin forming method, which can solve the problems that the structure and the arrangement mode of the existing radiator are single, the internal air is not easy to circulate, and the radiating efficiency is low.

In order to achieve the purpose, the invention adopts the following technical scheme:

the method comprises the steps of firstly drawing and inclining a radiating fin blank with an inclined buckling part to obtain an arc-shaped radiating fin blank, then bending the radiating fin blank to obtain a radiating fin with a buckling folding edge, and mutually buckling the radiating fins with the buckling folding edge to obtain the multi-angle radiating fin group.

The multi-angle radiating fin composition method has the beneficial effects that:

1) The blank of the radiating fin is stretched and inclined into an arc shape, so that the stretching and inclined angles and shapes of the radiating fin are different, and the radiating surface area of the multi-angle radiating fin group is increased;

2) The multi-angle fin group after the lock all forms the contained angle in air intake and air outlet department, and the space that every fin occupy is not repeated, has enlarged the space of the inside circulation of air of multi-angle fin group, can guarantee that every radiator blade can all carry out the heat exchange with cold air fully when outside cold air current is outdated, has improved the heat convection ability of radiator.

Preferably, before the fin blank fastening portion is beveled, the method further comprises:

punching a guide hole, namely punching the guide hole on the surface of the conveyed material belt according to a preset distance, and ensuring the advancing distance of the material belt in each process step;

cutting a material belt, and cutting the material belt required by each radiating fin blank;

and shearing the fin blanks, obtaining a bending expansion coefficient according to the material, the plate thickness and the bending inner diameter of the fin, and shearing the material belts required by each fin blank according to the bending expansion coefficient to obtain the fin blanks.

The preset distance can be the distance that the conveyor belt needs to travel after each process step is completed.

The arrangement mode ensures that the number of guide holes needing to be punched is minimum under the condition of ensuring the length of each step.

Preferably, the heat sink further comprises an outer folded edge, an air outlet folded edge and a folded edge of the heat pipe through hole, the outer folded edge, the air outlet folded edge and the folded edge of the heat pipe through hole are obtained by bending the heat sink blank, and the outer folded edge, the air outlet folded edge and the folded edge of the heat pipe through hole are respectively arranged on the heat sink main body.

The folded edge with a certain width is processed at the part of the heat pipe through hole in contact with the heat pipe, so that the contact area of the heat radiating fin and the heat pipe through hole is increased, the heat pipe is in closer contact with the heat pipe through hole, and the heat conduction capability of the heat radiating fin is improved.

And after the multi-angle radiating fin group is obtained, the multi-angle radiating fin group further comprises a welding base plate, and the multi-angle radiating fin group is welded on the base plate to obtain the radiator.

Preferably, an included angle between the buckling hem and the radiating fin main body and an included angle between the outer hem and the radiating fin main body are complementary angles, so that the projections of the buckling hem and the outer hem of the multi-angle radiating fin group in the direction perpendicular to the radiating fin main body and the substrate are respectively in a straight line; the cross section of the air outlet folding edge can be arc-shaped.

The invention also provides a radiator, which comprises a base plate, a multi-angle radiating fin group welded on the base plate and the like, wherein the radiating fin group is manufactured by adopting the multi-angle radiating fin group forming method, and the multi-angle radiating fin group comprises the following components:

the radiating fins are connected through the buckling riveting blocks and comprise radiating fin main bodies, and the radiating fins are not parallelly arranged between the radiating fin main bodies.

Wherein an included angle between adjacent ones of the fin bodies is less than 20 °.

At least one heat pipe through hole is formed in each cooling fin, and the vertical projection of the heat pipe through hole in each cooling fin on the adjacent cooling fin is overlapped with the heat pipe through hole formed in the adjacent cooling fin. The radiating fin further comprises an outer folded edge, an air outlet folded edge and a folded edge of the heat pipe through hole, and the outer folded edge, the air outlet folded edge and the folded edge of the heat pipe through hole are arranged on the radiating fin main body; the included angle between the buckling folding edge and the radiating fin main body ranges from 72 degrees to 90 degrees, and the included angle between the outer folding edge and the radiating fin main body ranges from 90 degrees to 108 degrees.

The arrangement of the air outlet folding edge converts the wind direction of the air outlet parallel to the radiating fins into the upper wind direction and the lower wind direction parallel to the substrate, saves the heat dissipation space required to be reserved at the air outlet and reduces the assembly space of the multi-angle radiating fin group.

Preferably, the cross-sectional shape of the air outlet folded edge of the heat sink may be an arc.

This arrangement effectively guides the flow of air in the radiator.

The cross section of the heat pipe through hole of the multi-angle radiating fin group can be T-shaped or L-shaped.

The shape of the heat pipe through hole is the same as that of the heat pipe, so that the contact area of the heat pipe and the radiator is increased, and the heat absorption efficiency of the radiator is improved.

The forming method of the multi-angle radiating fin group and the radiator manufactured by the method have the advantages that:

1) The included angle between the radiating fin main bodies increases the heat convection effect in the radiator, accelerates the air flow speed and further improves the radiating efficiency;

2) The radiator is elegant in appearance and compact in structure, and can meet the requirements of merchants and customers.

Drawings

FIG. 1 is a flow chart of a multi-angle fin forming method of the present invention;

FIG. 2 is a front view of a first heat sink in the present invention;

FIG. 3 is a front view of the heat sink of the present invention;

FIG. 4 is a view of the heat sink of the present invention in the direction A;

FIG. 5 is a cross-sectional view of a T-shaped heat pipe via;

FIG. 6 is a cross-sectional view of an L-shaped heat pipe via.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

10-a multi-angle radiating fin group, 11-a first radiating fin, 111-a radiating fin main body, 112-an air outlet folding edge, 113-a buckling folding edge, 114-an outer folding edge, 115-a heat pipe through hole, 116-a through hole body, 117-a boss, 12-a second radiating fin, 13-a third radiating fin, 14-a fourth radiating fin and 20-a substrate.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment discloses a multi-angle fin forming method, which includes that a fin blank with an inclined buckling part is drawn and inclined to obtain an arc-shaped fin blank, then the fin blank is bent to obtain a fin with a buckling folding edge 113, and the fins with the buckling folding edge 113 are buckled with each other to obtain a multi-angle fin group 10.

The multi-angle radiating fin group produced by the multi-angle radiating fin forming method of the embodiment can be used for manufacturing radiating fins with different stretching oblique angles and shapes, and the radiating surface area of the multi-angle radiating fin group is increased; and the multi-angle fin group after the riveting all forms the contained angle in air intake and air outlet department, and the space that every fin occupy is not repeated, has enlarged the space of the inside circulation of air of multi-angle fin group, can guarantee that every radiating blade can all carry out the heat exchange with cold air fully when outside cold air current is outdated, has improved the heat convection ability of radiator.

Before the fin stock fastening part is inclined, the method may further comprise:

punching a guide hole on the surface of the conveyed material belt according to a preset distance, wherein the guide hole is used for ensuring the advancing distance of the material belt in each step;

cutting the material belt, and cutting the material belt required by each radiating fin blank;

and shearing the fin blanks, obtaining a bending expansion coefficient according to the material, the plate thickness and the bending inner diameter of the fins, and shearing the material belts required by each fin blank according to the bending expansion coefficient to obtain the fin blanks.

The predetermined distance defined in this embodiment is the distance the conveyor belt needs to travel after each process step is completed. The arrangement mode ensures that the number of guide holes needing to be punched is minimum under the condition of ensuring the length of each step.

The heat sink provided by this embodiment may further include an outer folded edge 114, an air outlet folded edge 112, and folded edges of the heat pipe via hole 115, where the outer folded edge 114, the air outlet folded edge 112, and the folded edges of the heat pipe via hole 115 are obtained by bending a heat sink blank, and the outer folded edge 114, the air outlet folded edge 112, and the folded edges of the heat pipe via hole 115 are disposed on the heat sink main body 111. Preferably, an included angle between the fastening flange 113 and the heat sink main body 111 and an included angle between the outer flange 114 and the heat sink main body 111 are complementary angles, so that projections of the fastening flange and the outer flange of the multi-angle heat sink set in a direction perpendicular to the heat sink main body and the substrate are respectively a straight line; the cross-sectional shape of the outlet flap 112 may be an arc. The hem of certain width has been processed out at the heat pipe via hole part with the heat pipe contact, has increased the area of contact of fin with the heat pipe via hole, makes the contact of heat pipe with the heat pipe via hole inseparabler, has increased the heat-conduction ability of fin.

After obtaining the multi-angle fin group 10, the method further includes welding the substrate 20, and welding the multi-angle fin group 10 to the substrate 20 to obtain the heat sink.

Referring to fig. 1 and 2, the method for forming a multi-angle heat sink in this embodiment includes the following steps:

step 1, punching a guide hole, namely punching the guide hole on the surface of the conveyed material belt according to a preset distance. This preset distance may be the distance the conveyor belt needs to travel after each process step is completed. The arrangement ensures that the number of guide holes to be punched is minimum under the condition of ensuring the length of each step;

step 2, shearing the material belt, and shearing the material belt required by each radiating fin blank;

step 3, shearing the radiating fin blanks, obtaining a bending expansion coefficient according to the material, the plate thickness and the bending inner diameter of the radiating fins, and shearing the material belt required by each radiating fin blank according to the bending expansion coefficient to obtain the radiating fin blanks;

step 4, the buckling part of the radiating fin blank is inclined,

the step can facilitate the buckling of the buckling part in the subsequent step 7;

step 5, drawing and inclining the radiator blank and the heat pipe through hole 115, wherein the surfaces of the radiator blank and the heat pipe through hole 115 arranged on the radiator blank are arc-shaped after drawing and inclining are finished;

and 6, bending the radiator blank to obtain a buckling folded edge 113, an outer folded edge 114, an air outlet folded edge 112 and folded edges of the heat pipe through hole 115 of the radiator blank so as to obtain the radiator.

The included angle between the buckling folded edge 113 and the heat sink main body 111 and the included angle between the outward folded edge 114 and the heat sink main body 111 are complementary angles. Thus, the projections of the engaging flange 113 and the outward flange 114 of the multi-angle fin set 10 in the direction perpendicular to the fin body 111 and the base plate 20 are respectively in a straight line. The cross-sectional shape of the outlet flap 112 may be an arc.

And 7, connecting the radiating fins, and buckling the buckling parts of the adjacent radiating fins with the buckling riveting blocks to obtain the multi-angle radiating fin group 10.

And 8, welding the substrate 20, and welding the multi-angle radiating fin group 10 on the substrate 20 to obtain the radiator.

The embodiment also provides a radiator, which is manufactured by the multi-angle radiating fin forming method provided by the embodiment, can realize high-efficiency heat convection and heat conduction, and can meet the requirement of a user on the attractiveness of the radiator.

As shown in fig. 2, after the plurality of fins are connected into a multi-angle fin set, the direction a represents the air inlet direction, and the direction B represents the air outlet direction. The first heat sink 11 is soldered on the base plate 20. The first heat sink 11 includes a heat sink main body 111, an air outlet folded edge 112, a fastening folded edge 113, and an outer folded edge 114, wherein the heat sink main body 111 is provided with the air outlet folded edge 112, the fastening folded edge 113, and the outer folded edge 114, the air outlet folded edge 112 is disposed in an inclined manner with respect to the heat sink main body 111, and it should be noted that the air outlet folded edge 112, the fastening folded edge 113, and the outer folded edge 114 have the same extending direction and are all located on the same side of the heat sink main body 111.

The buckling edge 113 and the outer edge 114 are bent according to an included angle between the first heat sink 11 and the substrate 20, and an included angle formed by the buckling edge 113 and the heat sink main body 111 and an included angle formed by the outer edge 114 and the heat sink main body 111 are complementary angles after bending. The included angle between the fastening folding edge 113 and the heat sink main body 111 may range from 72 ° to 90 °, preferably from 72 °, 78 °, 74 °, and 90 ° in this embodiment, the included angle between the external folding edge 114 and the heat sink main body 111 may range from 90 ° to 108 °, preferably from 90 °, 96 °, 102 °, and 108 ° in this embodiment. The cross-sectional shape of the air outlet folding edge 112 of the first heat sink 11 is arc-shaped. 4 heat pipe through holes 115 are distributed on the heat sink main body 111, and the heat pipe through holes 115 are used for installing heat pipes. The second fin 12, the third fin 13, and the fourth fin 14 have the same front view shape as the first fin.

The embodiment also provides a heat radiator, as shown in fig. 3 and 4, the heat radiator comprises a substrate 20 and a multi-angle heat sink group 10 welded on the substrate, the multi-angle heat sink group 10 is manufactured by the multi-angle heat sink group forming method provided in the embodiment, the multi-angle heat sink group 10 comprises a plurality of first heat sinks 11, a plurality of second heat sinks 12, a plurality of third heat sinks 13 and a plurality of fourth heat sinks 14, and all the heat sinks are connected through buckling riveting blocks. The perpendicular projection of the heat pipe via 115 on each heat sink to the adjacent heat sink coincides with the heat pipe via 15 provided on the adjacent heat sink. The included angles between the first heat radiating fin 11 and the second heat radiating fin 12, between the third heat radiating fin 13 and between the fourth heat radiating fin 14 in the length direction are respectively 6 °,12 ° and 18 °.

The included angle formed between the radiating fin main bodies of the radiator increases the heat convection effect in the radiator, accelerates the air flow speed and further improves the radiating efficiency; moreover, the air outlet folding edge converts the wind direction parallel to the radiating fins at the air outlet into an up-wind direction and a down-wind direction parallel to the substrate, so that the radiating space required to be reserved at the air outlet is saved, and the assembling space of the multi-angle radiating fin group is reduced; the radiator has attractive and elegant appearance and compact structure, and can meet the requirements of merchants and customers.

As shown in fig. 5 and 6, the heat pipe via hole 115 is composed of a via hole body 116 and a boss 117, the boss 117 of the T-shaped heat pipe via hole is located on the linear side of the oblate via hole body 116, and the boss 117 of the L-shaped heat pipe via hole is located on the circular arc-shaped side of the oblate via hole body 116. The shape of the heat pipe through hole increases the contact area between the heat pipe and the radiating fin matched with the heat pipe through hole, and further improves the heat absorption efficiency of the radiator.

The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. A multi-angle radiating fin forming method is characterized in that a radiating fin blank with an inclined buckling part is drawn and inclined to obtain an arc-shaped radiating fin blank, then the radiating fin blank is bent to obtain a radiating fin with a buckling folding edge (113), and the radiating fins with the buckling folding edge (113) are mutually buckled to obtain a multi-angle radiating fin group (10);

the radiating fin further comprises an outer folded edge (114), an air outlet folded edge (112) and folded edges of the heat pipe through holes (115), the outer folded edge (114), the air outlet folded edge (112) and the folded edges of the heat pipe through holes (115) are arranged on the radiating fin main body (111), and the cross section of the air outlet folded edge (112) is arc-shaped.

2. The multi-angle fin forming method of claim 1, wherein before the fin stock material engagement portions are beveled, further comprising:

3. The multi-angle fin building set method of claim 1, wherein the outer fold (114), the outlet fold (112) and the fold of the heat pipe via (115) are obtained by bending the fin stock material.

4. The multi-angle fin structuring method as defined in claim 1, further comprising, after obtaining the multi-angle fin block (10):

and welding a base plate, and welding the multi-angle radiating fin group (10) to the base plate (20) to obtain the radiator.

5. The multi-angle fin forming method as set forth in claim 3, wherein an angle between the snap-fit flap (113) and the fin main body (111) and an angle between the outer flap (114) and the fin main body (111) are complementary angles.

6. A heat sink comprising a base plate (20) and a multi-angled fin array (10) welded to the base plate (20), wherein the fin array is manufactured by the multi-angled fin assembly method of any one of claims 1-5, the multi-angled fin array (10) comprising:

the heat radiating fins are connected through the buckling riveting blocks and comprise heat radiating fin main bodies (111), and the heat radiating fins are not parallel to each other and are adjacent to each other between the heat radiating fin main bodies (111).

7. A heat sink according to claim 6, wherein the angle between adjacent fin bodies (111) is less than 20 °.

8. The heat sink according to claim 6, wherein each of the heat sinks is provided with at least one heat pipe via hole (115), the heat sink further comprises an outer folded edge (114), an air outlet folded edge (112) and folded edges of the heat pipe via holes (115), and the outer folded edge (114), the air outlet folded edge (112) and the folded edges of the heat pipe via holes (115) are respectively provided on the heat sink main body (111); the included angle between the buckling hem (113) and the radiating fin main body (111) ranges from 72 degrees to 90 degrees, and the included angle between the outer hem (114) and the radiating fin main body (111) ranges from 90 degrees to 108 degrees.

9. The heat sink according to claim 6, wherein the cross-sectional shape of the air outlet flange (112) of the heat sink is arc-shaped.

10. The heat sink according to claim 6, wherein the cross-sectional shape of the heat pipe through hole (115) of the multi-angle fin group is T-shaped or L-shaped.