CN2847818Y

CN2847818Y - Heat radiator structure

Info

Publication number: CN2847818Y
Application number: CN 200520142777
Authority: CN
Inventors: 陈国星; 林暄智
Original assignee: HEFU HEAT CONDUCTION CO Ltd
Current assignee: Huahong Precise Corp.
Priority date: 2005-12-21
Filing date: 2005-12-21
Publication date: 2006-12-13
Anticipated expiration: 2015-12-21

Abstract

The utility model relates to a heat radiator structure, which can be attached to or contacted with a heating source of an electronic device. The utility model comprises a heat conducting member and at least one heat pipe, wherein the heat conducting member comprises a base and a cover body which is connected above the base, wherein the base is provided with at least one non open slot and the center of which is respectively formed with a through hole. In addition, the positions of the cover body, corresponding to the ends of the non open slot, are respectively provided with a through hole. The heat pipe comprises a heat absorbing end and a heat radiating end which is penetrated in the through hole of the cover body, and the heat absorbing end is connected between the base and the cover body through heat conducting medium. As the bottom edge of the heat absorbing end of the heat pipe is directly contacted with the surface of the heating source, the heat pipe and the heat conducting member are hermetically connected, the heat conducting speed rate of the radiator can be greatly increased and the radiating efficiency can be improved.

Description

Heat spreader structures

Technical field

The utility model relates to a kind of heat spreader structures, relates in particular to a kind of in order to attach the heat spreader structures of contact on the pyrotoxin of electronic installation.

Background technology

At present industry is aspect the heat radiation of electronic building brick, is to utilize characteristics such as high capacity of heat transfer that heat pipe has, flash heat transfer, high thermoconductivity, in light weight, simple in structure and multipurpose, can transmit a large amount of heats and not consume electric power.Therefore the radiating requirements that is fit to very much electronic product, and the combination sealing effect of heat pipe and heat conduction member, to directly have influence on the thermal conduction rate and the heat dissipation of integral heat sink device,, become the important topic that industry is studied so how to increase the sealing effectiveness that engages of heat pipe and heat conduction member.

Known heat spreader structures mainly comprises heat-conducting block, at least one heat pipe and a plurality of fin.Its end face at tabular copper material heat-conducting block is coated with heat-conducting medium, again an end of heat pipe is arranged on the surface that heat-conducting block is coated with heat-conducting medium, through the heat fused mode heat pipe is welded on the heat-conducting block, at last, again with the stacked in regular turn winding of each fin on heat pipe, so be combined into heat-pipe radiator structure.

Yet, above-mentioned known heat spreader structures, under practical application, still exist following problems, because its heat-transfer path is heat to be conducted to heat pipe through heat-conducting block again, and the thermal conduction rate of general heat pipe is more than the several times of thermal conduction rate of copper material heat-conducting block, therefore make heat pipe fast thermal conduction rate can't effectively obtain performance.In addition, heat conduction between heat-conducting block and heat pipe need be passed through the conduction of heat-conducting medium once more, and heat-conducting medium all adopts tin cream under various objective condition and cost consideration, and the conductive coefficient of this tin material is lower than the conductive coefficient of copper product, therefore rates of heat transfer is lowered once once more.Therefore, by the heat spreader structures that aforementioned manner is formed, the thermal conduction rate that can reach is subjected to sizable limitation, and significantly reduces the thermal conduction rate and the heat dissipation of integral heat sink device.

In view of the problem that above-mentioned known technology produced, then the design people being engaged in the sector experience for many years, and in line with excelsior spirit, active research is improved, and proposes heat spreader structures of the present utility model.

The utility model content

Main purpose of the present utility model is to provide a kind of heat spreader structures, its heat absorbing end root edge by heat pipe directly is contacted with on the surface of pyrotoxin, and being tightly connected between heat pipe and heat conduction member, significantly increased the thermal conduction rate of radiator and promoted heat dissipation.

In order to realize above-mentioned purpose, the utility model provides a kind of heat spreader structures, and in order to attach contact on the pyrotoxin of electronic installation, it comprises heat conduction member and at least one heat pipe.Wherein: heat conduction member comprises base and is connected the lid of base top, is provided with at least one non-open slot on base, and is formed with through hole respectively in the central authorities of non-open slot.In addition, lid is respectively equipped with through hole in the end corresponding to non-open slot.This heat pipe comprises heat absorbing end and radiating end, and this radiating end passes the through hole of lid, and heat absorbing end then is connected between base and the lid by heat-conducting medium.

Preferably, described base roughly is " ㄩ " shape, is respectively equipped with a plurality of connecting holes at its biside plate end face, and described lid also roughly is " ㄩ " shape, and flat board is arranged at the terminal outwards horizontal-extending of its biside plate, on described flat board, be provided with the location hole corresponding with described connecting hole.

Preferably, the biside plate lateral surface of described base has protruded out a plurality of projections respectively.

Preferably, the via top periphery of described lid is provided with chamfering.

Preferably, described heat pipe is any of U-shaped pipe, U-shaped elliptical tube or U-shaped rectangular pipe.

Preferably, the root edge of described base and heat pipe is in the same plane.

Preferably, described heat spreader structures also comprises groups of fins, described groups of fins comprises a plurality of stacked fin mutually, and each described fin is provided with the through hole corresponding to the radiating end of heat pipe, and the radiating end cross-under of described heat pipe is in the through hole of each described fin.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model radiator;

Fig. 2 is the combination schematic diagram of the utility model radiator;

Fig. 3 is the combination schematic diagram that the radiator of Fig. 2 is inserted heat-conducting medium;

Fig. 4 is another visual angle combination schematic diagram of the utility model radiator;

Fig. 5 is the combination schematic diagram that the utility model radiator connects groups of fins, fan frame;

Fig. 6 is the user mode figure of the utility model heat sink applications in pyrotoxin.

In the accompanying drawing, the list of parts of each label representative is as follows:

Heat conduction member 10

Base 11 non-open slots 111

Through hole 112 connecting holes 113

Projection 114 lids 12

Dull and stereotyped 121 through holes 122

Chamfering 123 location holes 124

Groove 125

Heat pipe 20

Heat absorbing end 21 radiating ends 22

Heat-conducting medium 30

Groups of fins 40

Fin 41 through holes 42

Framework 50

Fixed head 51

First fan, 60 second fans 61

Pyrotoxin 70

Embodiment

Relevant detailed description of the present utility model and technology contents, accompanying drawings is as follows, yet accompanying drawing only provide with reference to and be used for the explanation, be not to be used for the utility model is limited.

Referring to figs. 1 through shown in Figure 4, the utility model provides a kind of heat spreader structures, and it mainly comprises heat conduction member 10 and at least one heat pipe 20, wherein:

Heat conduction member 10 comprises base 11 and is connected the lid 12 of base 11 tops that base 11 can be made by the good material of thermal conductivity such as copper or aluminium, roughly is " ㄩ " shape.Be provided with at least one non-open slot 111 on base 11, present embodiment comprises three non-open slots 111 that are parallel to each other, and is formed with through hole 112 respectively in the central authorities of each non-open slot 111.In addition, be respectively equipped with a plurality of connecting holes 113 at the biside plate end face of base 11, these connecting holes 113 can be screw or hole.In addition, the biside plate lateral surface at base 11 has protruded out a plurality of projections 114 respectively.Lid 12 can be made by the good material of thermal conductivity such as copper or aluminium, and it is provided with corresponding to base 11, also roughly is " ㄩ " shape, and have dull and stereotyped 121 at the outside respectively horizontal-extending in the top of its and arranged on left and right sides plate.Be provided with a plurality of through holes 122 respectively at dull and stereotyped 121 left and right both ends, and be provided with chamfering 123, and be provided with the location hole 124 corresponding in its forward and backward both sides with connecting hole 113 at the apical margin of these through holes 122 corresponding to each non-open slot 111 of base 11.In addition, at the base plate of lid 12 and corresponding to the interval of each through hole 122, be provided with many grooves that are parallel to each other 125.

The radical of heat pipe 20 depends on the height of the heat of pyrotoxin fully, present embodiment comprises three heat pipes, and these heat pipes 20 can be the kenel of U-shaped pipe, U-shaped elliptical tube, U-shaped rectangular tube (temperature-uniforming plate) or other various different geometries, and it has heat absorbing end 21 and two radiating ends 22.Radiating end 22 is piercing in the through hole 122 of lid 12, and heat absorbing end 21 then is connected between base 11 and the lid 12 by heat-conducting medium 30.

Heat-conducting medium 30 with materials such as tin creams during making injects from through hole 122 chamferings 123 of lid 12, and in the heat fused mode, heat-conducting medium 30 is evenly filled up in the hole or slit of 20 of base 11, lid 12 and heat pipes, place again under the normal temperature to be cooled, so that the heat absorbing end 21 of heat pipe 20 closely is connected between base 11 and the lid 12.Wherein chamfering 123 has the double action that makes heat-conducting medium 30 be easy to inject and replenish as heat fused.At last, the radiator root edge in that base 11, heat pipe 20 and heat-conducting medium 30 are combined into grinding machine or the processing of emery cloth (paper) lapping mode, and makes each root edge of base 11 and heat pipe 20 in the same plane.

With reference to shown in Figure 5, radiator of the present utility model also can comprise groups of fins 40, and groups of fins 40 is formed by a plurality of fin 41 mutual stacked combination.Be provided with on each fin 41 corresponding to collinear through hole 42, the through hole 42 confessions respectively radiating end 22 of this heat pipe 20 wear connection.In addition, closed fan frame 50 at the exterior circumferential cover of these heat pipes 20 and groups of fins 40, the bottom of fan frame 50 is concaved with fixed head 51, and fixed head 51 is provided with the hole of the projection 114 of corresponding base 11, is connected on the base 11 with fixing.

With reference to shown in Figure 6, can install first fan 60 and second fan 61 in the forward and backward both sides of fan frame 50 respectively, and radiator of the present utility model is arranged on pyrotoxin 70 (as: central processing unit) top.Pyrotoxin 70 will produce high heat in operation, these heats will be directly from the surface conductive of pyrotoxin 70 on the heat absorbing end 21 and base 11 of each heat pipe 20, and by the gas-liquid phase heat transfer mechanism of each heat pipe 20 inside and the conduction of heat of heat conduction member 10, with heat is derived fast band from, and heat transmission, the diffusion of the groups of fins 40 by being serially connected with each heat pipe 20, reach the respectively forced air supply of this fan 61,62, and significantly promote the heat dissipation of radiator.

By after the above-mentioned explanation as can be known, the utility model directly is contacted with on pyrotoxin 70 surfaces of electronic installation by heat absorbing end 21 root edges of heat pipe 20, and being tightly connected of 12 of base 11, the lids of heat pipe 20 and heat conduction member 10, significantly increased the thermal conduction rate and the lifting heat dissipation of radiator.

Yet above-mentioned accompanying drawing and explanation are embodiment of the present utility model only, and the utility model is not limited thereto.Will be understood by those skilled in the art that according to feature category of the present utility model, other equivalent transformation or the modification done all should be encompassed in the claim scope of the present utility model.

Claims

1. heat spreader structures is characterized in that it comprises:

Heat conduction member, comprise base and be connected the lid of described base top, be provided with at least one non-open slot on described base, and be formed with through hole respectively in the central authorities of described non-open slot, described lid is respectively equipped with through hole in the end corresponding to described non-open slot; And

At least one heat pipe, it comprises heat absorbing end and radiating end, and described radiating end passes the through hole of described lid, and described heat absorbing end is connected between described base and the lid by heat-conducting medium.

2. heat spreader structures as claimed in claim 1, it is characterized in that, described base roughly is " ㄩ " shape, be respectively equipped with a plurality of connecting holes at its biside plate end face, described lid also roughly is " ㄩ " shape, and flat board is arranged at the terminal outwards horizontal-extending of its biside plate, on described flat board, be provided with the location hole corresponding with described connecting hole.

3. heat spreader structures as claimed in claim 2 is characterized in that, the biside plate lateral surface of described base has protruded out a plurality of projections respectively.

4. heat spreader structures as claimed in claim 1 is characterized in that, the via top periphery of described lid is provided with chamfering.

5. heat spreader structures as claimed in claim 1 is characterized in that, described heat pipe is any of U-shaped pipe, U-shaped elliptical tube or U-shaped rectangular pipe.

6. heat spreader structures as claimed in claim 1 is characterized in that the root edge of described base and heat pipe is in the same plane.

7. heat spreader structures as claimed in claim 1, it is characterized in that, also comprise groups of fins, described groups of fins comprises a plurality of stacked fin mutually, each described fin is provided with the through hole corresponding to the radiating end of described heat pipe, and the radiating end cross-under of described heat pipe is in the through hole of each described fin.