CN2659095Y

CN2659095Y - Radiating fin

Info

Publication number: CN2659095Y
Application number: CN 03257851
Authority: CN
Inventors: 陈兴璞
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-13
Filing date: 2003-06-13
Publication date: 2004-11-24
Anticipated expiration: 2013-06-13

Abstract

The utility model relates to a heat sink, which at least comprises a main body of heat sink with a base plate and a high heat conductor, plurality of heat sinks arranged towards the base plate and in the first direction of bottom surface, a through sliding slot and two long inlaid parts, wherein, width of the sliding slot is bigger than distance between the two inlaid parts. Two concave parts are longitudinally arranged in the first direction on both side surfaces of the high heat conductor and the high heat conductor is limited on the long inlaid part of this sliding slot by the concave part. The first thermally conductive surface of the sliding slot is closely contacted with the second thermally conductive surface of the high heat conductor by pressing force provided by the long inlaid part. The utility model is characterized in simple structure, quick fabrication, low cost and very excellent heat conduction efficiency.

Description

Radiating fin

Technical field

The utility model relates to a kind of heat abstractor, relates in particular to that a kind of structure is simplified, processed rapidly, cost is low, and the splendid radiating fin of heat transfer efficiency.

Background technology

More than the existing heat radiation fin structure, too numerous to enumerate, be example with two kinds of heat radiating metal couplers, its structure is radiating fin 10 as shown in Figures 1 and 2, comprising:

One pedestal 11, its top extend upward several pieces fins 12, and 12 tool predetermined gaps of these several pieces fins are in order to getting rid of heat;

One groove 13, be bottom from this pedestal 11 to pedestal 11 inner fovea superior settings, this groove 13 is installed with for a good thermal conductor 14 that is different from pedestal 11 materials;

There is following shortcoming in above-mentioned radiating fin:

1, procedure is numerous and diverse, cost is high.The manufacture process of existing radiating fin, be to need first moulding one pedestal, again at the fin of these several pieces heat transmissions of pedestal top moulding, and then be drilled with a groove in this base bottom, for this good thermal conductor is set, and manufacture process like this, for a radiating fin, be more complicated, added metal material, so cost is higher relatively.

2, two kinds of metal matter fixed forms trouble and stability are not good.Existing radiating fin is fixed on mode in the groove with good thermal conductor, nothing more than the surface coated binder that contacts with groove at this good thermal conductor, to allow good thermal conductor be fixed in the groove.Certainly, also have directly in the opening ora terminalis of groove and the contact site of this good thermal conductor, fix with welding manner, but, no matter fixing in which way, for existing radiating fin, move, in the assembling process as careless collision, all might cause the pedestal of this radiating fin and good thermal conductor to break away from, damage transporting.

3, bonding coat or welding portion hinder heat conduction.Existing radiating fin is fixed two kinds of different heat-conducting metals in the mode of weldering, gluing, so need filling flux or glutinous agent between two articles, influences heat conduction efficiency greatly;

4, if then must splendid precision with interference engagement, the manufacturing cost height.Existing radiating fin also has between the groove of good thermal conductor and pedestal, replaces aforesaid welding or bonding with the solid method of interference state plug.But for ask closely connected firmly, must make the size of good thermal conductor and groove accurately errorless and contact-making surface is smooth, and such high-precision smooth structure can make manufacturing cost greatly increase.

The utility model content

In order to overcome the above-mentioned shortcoming that existing radiating fin exists, the utility model provides a kind of improved radiating fin, it has structure and simplifies, processes rapidly and the low advantage of cost, and do not need any weldering, glutinous agent and can fixedly positioning two metals, do not influence heat transfer efficiency, fit by two kinds of metallic packings, even arrange in pairs or groups heat pipe again and make heat transfer efficiency splendid.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of radiating fin comprises a radiating fin main body at least, and one and the high heat conductive body that links of this radiating fin main body; It is characterized in that described radiating fin main body has: a base body has an end face and a bottom surface; Several fins are arranged in the end face of this base body in regular turn according to first direction; One chute connects the bottom surface of this base body according to first direction, and the width of this chute is defined as first distance, and a groove of this chute top is first thermal conductive surface; Two long embedding portions are arranged on the both sides of this chute according to first direction, and intermarginal width is defined as second distance outside this two long embeddings portion, and this second distance is less than this first distance; Described high heat conductive body is that the material of the conductive coefficient conductive coefficient that is higher than this base body constitutes, and has: a top, and establish one second thermal conductive surface, and be closely connected relative form between this first and second thermal conductive surface; One bottom, its both sides according to first direction respectively fovea superior form a recess, this recess is cross-placed between first distance of two long embedding portions of this chute this high heat conductive body, contained restriction by the second distance of this chute, this length embedding portion makes the closely connected applying of the second thermal conductive surface packing of first thermal conductive surface of this chute and this high heat conductive body securely.

Aforesaid radiating fin, wherein long embedding portion integral body press down and make the inner formation one of this chute bending by a small margin.

Aforesaid radiating fin be provided with several exemplary pressure components again between wherein long embedding portion and described high heat conductive body, and several exemplary pressure components that are fixed in this length embedding portion pushes against this high heat conductive body.

Aforesaid radiating fin, wherein base body is an aluminium material, described high heat conductive body is a copper material.

Aforesaid radiating fin, wherein long embedding portion forms the holding division that press down shape to it near the part between this high heat conductive body outer rim along the two ends of first direction.

Aforesaid radiating fin, wherein closely connected of chute and described high heat conductive body, be arranged with first and second groove respectively along first direction, between this chute and this high heat conductive body, form a passage with this first and second groove, this passage is installed with a heat pipe.

The beneficial effects of the utility model are, it has structure simplifies, processes rapidly and the low advantage of cost, and does not need any weldering, glutinous agent and can fixedly positioning two metals, does not influence heat transfer efficiency, fit by two kinds of metallic packings, even arrange in pairs or groups heat pipe again and make heat transfer efficiency splendid.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the decomposition texture schematic diagram of existing radiating fin

Fig. 2 is the sectional side view of existing radiating fin

Fig. 3 is an exploded perspective schematic diagram of the present utility model

Fig. 4 is the schematic perspective view that the utility model shows the bottom

Fig. 5 is an A-A cutaway view shown in Figure 3

Fig. 6 is that first and second thermal conductive surface of the utility model chute and high heat conductive body is slightly gapped view

Fig. 7 is that first and second thermal conductive surface of the utility model chute and high heat conductive body is a packing fit-state schematic diagram

Fig. 8 is the enlarged diagram of the utility model part-structure

Fig. 9 is another embodiment schematic diagram of the utility model part-structure

Figure 10 is the another embodiment schematic diagram of the utility model part-structure

Figure 11 is an also embodiment schematic diagram of the utility model part-structure

Figure 12 is the utility model part-structure embodiment schematic diagram again

Figure 13 is other embodiment schematic diagrames of the utility model part-structure

Figure 14 is the schematic perspective view that structure shown in Figure 13 shows the bottom

Figure 15 is the cutaway view of exemplary pressure components part

The number in the figure explanation:

Radiating fin 10 pedestals 11

Fin 12 grooves 13

Good thermal conductor 14 radiating fin main bodys 20

Base body 21 fins 22

Chute 23 first thermal conductive surfaces 231

Length embedding portion 24 high heat conductive bodies 30

Recess 31 second thermal conductive surfaces 32

Lower concave part 33 passages 40

The first groove 40A, the second groove 40B

Heat pipe 41 exemplary pressure components 50

The first distance H second distance L

First direction P1

Embodiment

The utility model is a kind of radiating fin, sees also Fig. 3～shown in Figure 7, and it comprises a radiating fin main body 20 at least, and one and the high heat conductive body 30 that links of this radiating fin main body 20, wherein:

This radiating fin main body 20 has:

One base body 21 is first material (for example aluminium) with predetermined thermal coefficient of conductivity, and has an end face and a bottom surface;

Several fins 22 are that the first direction P1 towards base body 21 end faces arranges in regular turn;

One chute 23 is the bottom surfaces that connect this base body 21 according to first direction P1, and the width of chute 23 is decided to be first distance H, and a groove of chute 23 top is one first thermal conductive surface 231;

Two length embedding portions 24 are to be longitudinally set with in the both sides of this chute 23 according to first direction P1, and these two length embedding portion, 24 outer intermarginal width are defined as second distance L, and this second distance L is less than first distance H.

Above-mentioned high heat conductive body 30 is higher than second material (for example copper) of first material for conductive coefficient, and have a top and a bottom, one second thermal conductive surface 32 is established at this top, first thermal conductive surface 231 with second thermal conductive surface, 32 closely connected these chutes 23, and provide contact heat absorption with this bottom, and this first and second thermal

conductive surface

231 and 32 be can closely connected shape.The two bottom sides of this high heat conductive body 30 towards first direction respectively fovea superior form a recess 31, this recess 31 makes high heat conductive body 30 slip into, bridge in two long embedding portions 24 of chute 23 first distance H, makes high heat conductive body 30 be subjected to this second distance restriction that L contains; This length embedding portion 24 provides a compressing power to allow first thermal conductive surface 231 of this chute 23 closely connected with second thermal conductive surface, 32 packings of high heat conductive body 30 securely.In the present embodiment, this compressing power is to be formed one and press down bending by a small margin and produced toward chute 23 is inner by these length embedding portion 24 whole pieces.More particularly, these length embedding portion 24 whole pieces press down bending by a small margin toward these chute 23 inner formation one, to allow chute 23 and first and second thermal

conductive surface

231,32 of high heat conductive body 30 be forced to the packing applying securely.That is, become packing fit-state shown in Figure 7 by slightly gap state shown in Figure 6.

In fact, radiating fin main body 20 of the present utility model is to be applied to any heating surface (heat generating part that for example is used for CPU substantially, not shown in the figures) contact heat radiation, mainly be to contact with heating surface arbitrarily with the bottom of this high heat conductive body 30, so as to absorbing heat, and with the heat that is absorbed, characteristic by its high heat conduction, rapidly reach first thermal conductive surface 231 with this chute 23 groove top contact, and then heat is distributed by several fins 22 of these base body 21 end faces by second thermal conductive surface 32.

Secondly, base body 21 of the present utility model is aluminiums, the gap of this fin 22, the perforation direction of this chute 23 and this long filler rod 24 extend trend, all towards the first direction P1 of base body 21, so this base body 21 can the aluminium extruded molding mode, on a bulk of aluminium, according to one-body molded several fins 22 of first direction P1 (also comprising this chute 23 and this long filler rod 24 certainly), afterwards, again from a bulk of aluminium,, base body 21 separated one by one getting final product with " method of stripping and slicing rapidly ", on making, be fit to produce in batches, have structure concurrently and simplify, processing rapidly, the advantage that cost is low.

In addition, see also Fig. 8, for more guaranteeing cannot not closely cooperating looseningly of 21 of high heat conductive body 30 and base bodies, as long as at the two ends of the long embedding portion 24 that originally has been the whole piece pressed status extremely near the part of this high heat conductive body 30, once more towards chute 23 inner pressing down for the second time, make the two ends pressed down long embedding portion 24 once press down once more and slightly bend into, high heat conductive body 30 is blocked on the both sides, front and back, make it can't slippage on chute 23, even if this radiating fin main body 20 is subjected to sharp pounding, also can not cause between the two disengaging of high heat conductive body 30 and this base body 21, loosening.

Certainly, second thermal conductive surface 32 of this high heat conductive body 30 also can be complied with different demands except that generally being the triangular shape as preferred embodiment, forms circular arc as shown in Figure 9, trapezoid shown in Figure 10, even shown in Figure 11 trapezoidal.

In addition, see also shown in Figure 12, when this high heat conductive body 30 is triangular shape embodiment, for avoid its drift angle slightly contact to the groove of this chute 23 top, thereby the driving fit that influences first thermal conductive surface 231 and second thermal conductive surface 32 is incomplete, also can form a lower concave part 33, can guarantee that like this this first thermal conductive surface 231 and second thermal conductive surface 32 are certain close-fitting state, to reach the required driving fit of high heat conduction state at the top of this high heat conductive body 30.

Certainly, most important, be that the utility model can make two kinds of metals fix two metals in the trouble mode that does not adopt welding, gluing, and can be close-fitting state at the fixing contact-making surface of relief two metals, fully can be owing to any weldering, glutinous agent influence its excellent heat-conductive characteristic, make the utility model improve heat conduction efficiency, and be applied to the cooling system of more senior electronic product.

In addition, see also Figure 13, shown in Figure 14, in fact, at the relative closed surface of this chute 23 with this high heat conductive body 30, be arranged with the one first groove 40A and the second groove 40B respectively along first direction, form a passage 40 with this first groove 40A and the second groove 40B at this

chute

23 and 30 of this high heat conductive bodies, allow a heat pipe 41 hold in it by this passage 40.Whereby, this heat pipe 41 can be effectively be passed to two outer ends of the lower radiating fin main body 20 of temperature with heat by high heat conductive body 30, makes that the integral heat sink effect is better.

In addition, see also Figure 15, aforesaid compressing power also can otherwise produce, and promptly this

length embedding portion

24 and 30 of this high heat conductive bodies are provided with several exemplary pressure components 50 (for example screw) again, and this compressing power is to produce by being fixed in several exemplary pressure components 50 these high heat conductive bodies 30 of pushing and pressing in this length embedding portion 24.

About the contact surface of first thermal conductive surface 231 and second thermal conductive surface 32, even if but the packing applying if amplify observation, still reduces the ratio of real contact area unavoidably because of the surface roughness of contact-making surface outside the packing fitting part, influence whole hot transfer efficiency.If want head it off, can first thermal conductive surface 231 and the surface of second thermal conductive surface 32 between coat a little heat filling (or thermally conductive grease), when this length embedding portion 24 provides a compressing power to allow securely after the closely connected applying of second thermal conductive surface, 32 packings of first thermal conductive surface 231 and this high heat conductive body 30 of this chute 23, this a little heat filling (or grease) can be filled up pore or the little space between contact surface automatically, and then improves whole hot transfer efficiency.

The utlity model has following advantage:

1, structure is simplified, and processing is rapid and cost is low.The utility model is the base body that adopts in conjunction with high heat conductive body, be first Heat Conduction Material with aluminium in principle: the gap of this fin trend, this chute open direction, and this length embedding portion extend direction etc., all towards the first direction of this base body, so make the base body can " aluminium extruded processing method ", in the time processing process, simultaneously with this fin, this chute and should long embedding portion " one-body molded " on base body, make its processing rapidly and cost low.

2, structure links simple and firm.Because the high heat conductive body cunning is when placing the precalculated position of this chute, this long filler rod forms towards the inside of this chute and presses down form, can allow the closely connected binding of formation between first and second thermal conductive surface of this chute and high heat conductive body securely, and is very firm.And the utility model does not need to adopt as existing radiating fin with " the interference plug is solid " required accurate smooth processing mode, so also effectively reduction of cost with the combination of approximate " clamping ".

3, do not influence heat conducting bar.Long embedding of the present utility model portion provides a compressing power to allow the closely connected applying of the second thermal conductive surface packing of first thermal conductive surface of this chute and this high heat conductive body securely, eliminates existing radiating fin and stays weldering between in conjunction with the whole interface in back, sticks agent and influence the disappearance of heat conduction efficiency.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. a radiating fin comprises a radiating fin main body at least, and one and the high heat conductive body that links of this radiating fin main body; It is characterized in that,

Described radiating fin main body has:

One base body has an end face and a bottom surface;

Several fins are arranged in the end face of this base body in regular turn according to first direction;

One chute connects the bottom surface of this base body according to first direction, and the width of this chute is defined as first distance, and a groove of this chute top is first thermal conductive surface;

Two long embedding portions are arranged on the both sides of this chute according to first direction, and intermarginal width is defined as second distance outside this two long embeddings portion, and this second distance is less than this first distance;

Described high heat conductive body is that the material of the conductive coefficient conductive coefficient that is higher than this base body constitutes, and has:

One second thermal conductive surface is established at one top, and is closely connected relative form between this first and second thermal conductive surface;

One bottom, its both sides according to first direction respectively fovea superior form a recess, this recess is cross-placed between first distance of two long embedding portions of this chute this high heat conductive body, contained restriction by the second distance of this chute, this length embedding portion fits first thermal conductive surface of this chute and the second thermal conductive surface packing of this high heat conductive body.

2. radiating fin according to claim 1 is characterized in that described long embedding portion integral body presses down to make the inner bending by a small margin that forms of this chute.

3. radiating fin according to claim 1 it is characterized in that being provided with several exemplary pressure components again between described long embedding portion and described high heat conductive body, and several exemplary pressure components that are fixed in this length embedding portion pushes against this high heat conductive body.

4. radiating fin according to claim 1 is characterized in that described base body is an aluminium material, and described high heat conductive body is a copper material.

5. radiating fin according to claim 2 is characterized in that described long embedding portion forms the holding division that press down shape to it near the part between this high heat conductive body outer rim along the two ends of first direction.

6. radiating fin according to claim 2, it is characterized in that described chute and described high heat conductive body closely connected, be arranged with first and second groove respectively along first direction, form a passage with this first and second groove between this chute and this high heat conductive body, this passage is installed with a heat pipe.

7. radiating fin according to claim 3, it is characterized in that described chute and described high heat conductive body closely connected, be arranged with first and second groove respectively along first direction, form a passage with this first and second groove between this chute and this high heat conductive body, this passage is installed with a heat pipe.