CN201413076Y

CN201413076Y - Heat dissipation structure

Info

Publication number: CN201413076Y
Application number: CN2009201461264U
Authority: CN
Inventors: 陈盈同; 陈伟恩
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-26
Filing date: 2009-03-26
Publication date: 2010-02-24
Anticipated expiration: 2019-03-26

Abstract

The utility model relates to a heat dissipation structure which is used in a heat energy generation part in an electronic device and comprises a metal matrix and a carbonaceous composite material layer which is formed on the metal matrix and formed by sintering a plurality of carbonaceous particles coated with a metal layer; and the carbonaceous composite material layer can also be formed by sintering metal particles and the carbonaceous particles. When being applied, the heat dissipation structure has the heat dissipation effect of a traditional vapor chamber and a traditional heat spreader,and comprises the carbonaceous composite material layer and a metal board with high heat conductivity so as to be coated on a calorific electronic component for heat exchange, thus forming better heatdissipation effect.

Description

A kind of radiator structure

Technical field

The utility model relates to a kind of radiator structure, is relevant a kind of heat energy generation place that is applied to electronic installation inside, with the radiator structure of rapid absorption heat energy and release heat energy.Belong to the heat dissipation technology field.

Background technology

Has the member that much can produce the high heat of high temperature in the member of electronic installation, comprise as central processing unit, laser diode, light emitting diode, microwave source etc., and along with the lifting of computer usefulness, the power of these members will be more and more higher, and its circuit will be more and more intensive also, and the heat that those members are produced is more and more higher, and heat more and more is difficult to get rid of, so that the temperature of those members surpasses the upper limit of allowing gradually, and the anxiety of burning is arranged.

With the central processing unit is example, at present general central processing unit also can be got rid of unnecessary heat energy with fin made of copper reluctantly, but more high-power central processing unit, its heat energy are incited somebody to action bigger and can be produced in moment, if still will be easy to be damaged with the then intensive circuit of copper sheet heat radiation.

Radiator structure system commonly used now utilizes heat pipe or plate heat pipe to dispel the heat, its structure lies in this inside heat pipe and is provided with copper mesh, make it have cellular structure, and inside has the evaporation part, this evaporation part system is positioned at the top of centralized heat energy place (being central processing unit), its operation principle is identical with the hydrocone type heat pipe principle, and different is the mode that working fluid returns the evaporation part.The required working fluid of desiring to be evaporated in the evaporation part, by the driving force of cellular structure, this capillary pressure can push the liquid of condensation towards the evaporation part fully, working fluid is evaporated once more, so constantly circulation can make heat pipe constantly work, and then reach the effect of heat radiation.

Because the heat pipe or the plate heat pipe of tradition also are to utilize the made copper mesh of copper to make cellular structure, though the radiating efficiency of copper itself is pretty good, but lifting along with central processing unit power, gradually, structures such as copper mesh or its similar copper groove, copper sintering, the heat energy that central processor produced among the high power of can't having loaded.Therefore, the appearance of the radiator structure of high-heat-conductive composite material is arranged recently, usually this high-heat-conductive composite material must possess characteristics such as high thermoconductivity, low-density and low-expansion coefficient, so that the heat energy in the electronic installation can be got rid of as early as possible, and can rapidly the high temperature that moment produced be conducted, could really effectively reach the purpose of heat radiation.Meet the most common with the diamond composite of above-mentioned characteristic, because the heat conductivity of diamond composite is far above fine copper and other material, and its density and thermal coefficient of expansion be lower than aluminium, copper etc. again, so be splendid heat sink material.

See also Figure 1A and Figure 1B, it is the schematic diagram of the heat conduction structure of No. 093117360 application for a patent for invention case in Taiwan, it is to use the main base material of industrial diamond as this heat conduction structure, as shown in the figure, the embodiment of this heat conduction structure 10, lie in container 11 interior storehouses cylindraceous and place plural diamond grains 12, and then place anaerobic high conductance copper 13 in the top of this plural number diamond grains 12, see through the operating environment of HTHP again, for example with 2000 tons exert pressure in the top of this anaerobic high conductance copper 13, and pass to electric current heating is provided, make temperature up to more than 1150 ℃, this anaerobic high conductance copper 13 is understood Yin Gaowen and is melted, and is penetrated between the plural diamond grains 12, through pressurization anaerobic high conductance copper 13 and diamond grains 12 are combined into one again, moreover, can add a little metal dust in addition again, for example: zirconium, silver etc., to promote penetrating power or heat conductivity, in order to do forming a cylindric heat exchange block.

This heat conduction structure 10 is to utilize diamond and copper to be combined into one and can form the structure with good heat conductivity, because of the heat conductivity of diamond up to 2300W/mK, be equivalent to six times of copper, farther greater than other metal, so be splendid heat conducting material.

In the above-mentioned known techniques, though this heat conduction structure 10 is to have good thermal conduction characteristic, but its manufacturing process need be carried out in the environment of HTHP, the significantly increase of cost of manufacture will be caused, and the control of temperature and pressure is difficult for, and when too high and pressure is excessive when temperature, all has the anxiety of infringement diamond grains 12, so control temperature and pressure not only have the problem of cost increase, also have the problem of processing procedure difficulty simultaneously.Moreover this heat conduction structure 10 is that pressurization forms block solid structure, its inner and tight, and therefore, in the environment of fluid flow, this heat conduction structure 10 can't make the fluid radiator structure, and then can't reach the heat radiation function of expection.

Therefore, how to provide a kind of heat dissipation technology, have great heat radiation effect, structure simple, be easy to the design making and effectively reduce cost, improving the disappearance of aforementioned known techniques, need problem to be solved badly for this industry in fact.

Summary of the invention

In order to overcome the deficiency of prior art structure, one of the utility model purpose ties up to provides a kind of radiator structure, to have good radiating effect.

Another purpose of the utility model ties up to provides a kind of radiator structure that is easy to making.

A purpose again of the utility model ties up to provides a kind of radiator structure that reduces cost.

The radiator structure that provides a kind of structure simple is provided the another purpose of the utility model.

For reaching above-mentioned purpose and other purpose, the utility model system provides a kind of radiator structure, is to comprise the compound bed of material of carbonaceous at least, and the compound bed of material of this carbonaceous system is made of the mutual sintering of plural carbonaceous particle that the surface is coated with metal level respectively.

For reaching above-mentioned purpose and other purpose, the utility model system provides a kind of radiator structure again, system comprises the metal system matrix and the compound bed of material of carbonaceous at least, the compound bed of material of this carbonaceous system is formed on this metal system matrix, and be to have the mutual sintering of plural carbonaceous particle of metal level to be constituted, be formed with cellular structure in the compound bed of material of this carbonaceous by surface coverage.

In a preferred embodiment, this radiator structure, system comprises the metal system matrix and the compound bed of material of carbonaceous at least, this metal system matrix has a chamber, the compound bed of material of this carbonaceous also can be made of plural metallic particles and the carbonaceous particle institute that mutually combines, and the compound bed of material of this carbonaceous system is formed with cellular structure wall within this chamber.

A kind of manufacture method of radiator structure is to comprise the steps: to provide metal system matrix at least; Provide surface coverage that the plural carbonaceous particle of metal level is arranged; There is the plural carbonaceous particle of metal level to sinter the compound bed of material of carbonaceous into surface coverage; And utilize the mode of sintering that the compound bed of material of carbonaceous is incorporated on this metal system matrix.

In the aforementioned radiator structure, cording has cellular structure in the compound bed of material of this carbonaceous.In an embodiment, these metal series of strata are selected from wherein one of copper layer, aluminium lamination, silver layer, nickel dam and cobalt group that layer is formed.This carbonaceous particle system is selected from wherein one of diamond and group that graphite is formed, and this metallic particles is to be selected from wherein one of copper, aluminium, silver, nickel and group that cobalt is formed.And this carbonaceous particle magnitude range is 1 μ m-2mm, and preferred range is 100 μ m-150 μ m.

Compared to known techniques, the radiator structure of the utility model, system makes this carbonaceous particle appearance be coated with metal level, see through the mode of sintering again, plural carbonaceous particle is mutually combined and form the compound bed of material of carbonaceous, promote thermal conduction effect and radiating effect by carbonaceous particle, and be formed with cellular structure in the compound bed of material of this carbonaceous, when being applied to the fluid cooling mechanism, the capillarity and the flowing space of fluid can be provided by cellular structure, to promote radiating effect, therefore, it is unclear to solve known radiating effect really, cost of manufacture is high, processing procedure control is difficult for and complex structure and other problems.

Description of drawings

Fig. 1 is the schematic diagram of Taiwan application for a patent for invention number No. 093117360 heat conduction structure that case discloses;

Fig. 2 is the structural representation of radiator structure first embodiment of the utility model;

Fig. 3 is the structural representation of radiator structure second embodiment of the utility model;

Fig. 4 is the schematic diagram of radiator structure the 3rd embodiment of the utility model;

Fig. 5 is the structural representation of the 4th embodiment of the radiator structure of the utility model;

Fig. 6 is the user mode reference diagram of the radiator structure of the utility model;

Fig. 7 is the structural representation of the 5th embodiment of the radiator structure of the utility model;

Fig. 8 is the flow chart of manufacture method of the radiator structure of the utility model;

Fig. 9 is the structural representation of manufacture method of the radiator structure of the utility model.

Among the figure: heat conduction structure 10; Container 11; Diamond grains 12; Anaerobic high conductance copper 13; Radiator structure 20; The compound bed of material 21 of carbonaceous; Carbonaceous particle 211; Metal level 212; Metallic particles 213; Cellular structure 214; Metal system matrix 22; Chamber 220; Superconductive medium 221; Steam 222; Condensing zone 223; Liquid phase fluid 224; Radiating fin 30; Central processing unit 40; Step S10-S12.

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

The specific embodiment

Below be the embodiment by particular specific embodiment explanation the utility model, appearance was understood other advantage and the effect of the utility model easily within the personage who has the knack of this skill can be disclosed by this specification.The utility model also can be implemented or be used by other different specific embodiment, and the every details in this specification also can be carried out various modifications and change based on different viewpoints and application under not departing from the spirit of the utility model.

The embodiment of the graphic explanation the utility model of following reference, it should be noted, the utility model system is applied to have the member top of heating energy, for example the top of central processor (or LED pyrotoxin) among the electronic installation inside, with rapid conduction heat energy and discharge heat energy, and then reach the effect of heat radiation, kenel, quantity and ratio during its actual enforcement are not to exceed with diagram, can need change according to actual design, close chat earlier bright.

Seeing also Fig. 2 and Fig. 3, is the schematic diagram of radiator structure first embodiment of the utility model and the schematic diagram of second embodiment.As shown in the figure, the radiator structure 20 of the utility model embodiment is to comprise the compound bed of material 21 of a carbonaceous, and the compound bed of material 21 of this carbonaceous is to have the carbonaceous particle 211 mutual sintering of metal level 212 to be constituted by surface coverage.In addition, as shown in Figure 3, the compound bed of material 21 of the carbonaceous of the utility model also can be made of plural carbonaceous particle 211 and metallic particles 213 mutual sintering.

It should be noted that at this technology of this thermal sintering is general prior powder metallurgy processing procedure; Or be a kind of processing procedure in conjunction with prior powder metallurgy and plastics injection molding technology, this processing procedure mainly is that carbonaceous particle 211 is mixed with the macromolecule adhesive, make it after heating, have the flowability of similar plastics material, and can provide the part of complicated shape by general Jet forming machine manufacturing, living embryo behind the injection molding is through skimming processes, after removing the macromolecule adhesive, can obtain high density and have excellent mechanical and the sintered part(s) of physical property through sintering again.

Seeing also Fig. 4, is the schematic diagram of radiator structure the 3rd embodiment of the utility model, and as shown in Figure 4, this radiator structure 20 is to comprise a metal system matrix 22 and the compound bed of material 21 of a carbonaceous.This metal system matrix 22 is the metal that is selected from high heat conduction, for example: copper, aluminium and nickel.The compound bed of material 21 of this carbonaceous is to be sintered on this metal system matrix 22, the compound bed of material 21 of this carbonaceous is made of plural carbonaceous particle 211 mutual sintering, the surface of this carbonaceous particle 211 also is coated with metal level 212, and, respectively this carbonaceous particle 211 melts because of sintering surface metal edge, therefore make each other to mutually combine, and make respectively and have cellular structure 213 between this carbonaceous particle 211.

In addition, in other embodiments, the compound bed of material 21 of this carbonaceous also can be made of plural metallic particles 213 and plural carbonaceous particle 211 mutual sintering, same, respectively this metallic particles 214 and carbonaceous particle 211 melt because of the sintering marginal surface, therefore make each other to mutually combine, and make respectively and have cellular structure 213 between this metallic particles 214 and carbonaceous particle 211.This carbonaceous particle 211 is to can be diamond or graphite etc., this metal level 212 is to be selected from wherein one of copper layer, aluminium lamination, silver layer, nickel dam and cobalt group that layer is formed, in the present embodiment, this carbonaceous particle 211 mainly is to be that example describes with the carbonado, and this metal level 212 is to be that example describes with the copper layer.

It should be noted that, in other embodiments, the carbonaceous particle 211 of the compound bed of material 21 of this carbonaceous also can be graphite, this metal level 212 also can be aluminium lamination, silver layer, but and configuration example as: diamond grains add copper particle, graphite granule add copper particle, diamond grains copper facing (shown in annex), graphite granule copper facing (shown in annex) or above each become mixing institute's sintering of branchs and form.

Because the heat conductivity of carbonado is up to 2300 (W/m.K), the heat conductivity of copper also has 401 (W/m.K), both heat conductivities are all much larger than other metal, so, make the high-heat-conductive composite material radiator structure of the utility model have good heat conductivity; Wherein, this carbonaceous particle magnitude range is 1 μ m-2mm, and is preferred range with 100 μ m-150 μ m.

Seeing also shown in Figure 5ly, is the structural representation that the utility model radiator structure the 4th is implemented profit, and as shown in Figure 5, the radiator structure 20 of the utility model the 4th embodiment also comprises: the compound bed of material 21 of a metal system matrix 22 and a carbonaceous.With first, what second and third embodiment was different is, the plural carbonaceous particle 211 of the compound bed of material 21 of this carbonaceous is that monolayer alignment is on this metal system matrix 22, certainly also can be bilayer or multilayer is arranged on this metal system matrix 22 in other embodiment, and sintering constitutes mutually, because the carbonaceous particle 211 of the compound bed of material 21 of this carbonaceous is little, and carbonaceous particle 211 itself has the heat conductivity of good directionless restriction, and the surface area of carbonaceous particle 21 is big, therefore, can effectively promote radiating efficiency, and can replace the function of known heat radiation graphite flake, more can promote practicality.

As shown in Figure 6, it is the user mode reference diagram of the utility model radiator structure, the radiator structure 20 of the utility model is when using as shown in Figure 6, the side further is provided with radiating fin 30 thereon, this radiating fin 30 is to be covered on this metal system matrix 22, in order to promote radiating effect, certainly, in other embodiment, also available condenser or other equivalent device replace this radiating fin 30.It should be noted that, this metal system matrix 22 is the top that is placed in this heat energy generation place, central processor 40 or other can produce the assembly top of heat energy among this heat energy generation place can be in the electronic installation, in the present embodiment, system is that example describes with central processing unit 40, because this central processing unit 40 can produce very high temperature when running, promptly produce a large amount of heat energy.System directly is arranged at the radiator structure 20 of the utility model the top of this central processing unit 40.

The radiator structure 20 of the utility model is when using, the metal system of tying up to matrix 22 is made into the chamber 220 with vacuum sealing, in this chamber 220, be filled with superconductive medium 221, this superconductive medium 221 system usually for example is pure water or alcohol, this central processing unit produces 40 heat energy system by metal system matrix 22, and by the rapid absorption of the compound bed of material 21 of this carbonaceous and be delivered to superconductive medium 221, this superconductive medium 221 is because of the phenomenon of liquid-phase vaporization, promptly produce the steam 222 of high temperature, the steam 222 of this high temperature also riddles whole chamber 220, when the steam 222 of this high temperature touches colder condensing zone 223, just can produce the phenomenon of condensing, by the phenomenon of condensing heat energy being seen through the compound bed of material 21 of carbonaceous is passed to metal system matrix 22 and radiating fin 30 and discharges towards the external world, and the liquid phase fluid 224 after condensing, then see through the compound bed of material 21 of carbonaceous cellular structure 214 capillarity and flow back into bottom (being the top of heat energy generation place), the circulation that so goes round and begins again running and can reach rapid and good radiating effect.

See also Fig. 7, it is the structural representation of the utility model the 5th embodiment, as shown in Figure 7, the metal system matrix 22 of the radiator structure 20 of the utility model is a cylinder, its inside has the chamber 220 of a cylindrical shape, the compound bed of material 21 of this plural number carbonaceous is to be placed in this chamber 220, sinters a radiator structure 20 with cellular structure 214 again into.And, the compound bed of material 21 of this carbonaceous can also plural carbonaceous particle 211 and metallic particles 213 constitute.By this, get final product porous carbonaceous composite construction, if in addition fluid (water or air) flows, also can promote radiating effect.The shape of the metal system of it should be noted that matrix 21 is except for the cylindrical shape, also can be the demand of looking and makes the metal system matrix 22 of square or other arbitrary shape.

Seeing also Fig. 8 and shown in Figure 9, is the flow chart and the structural representation of the manufacture method of radiator structure, is to comprise the steps.

In step S10, provide metal system matrix 22 and surface coverage that the plural carbonaceous particle 211 of metal level 212 is arranged.Then proceed to step S11.

In step S11, there is the plural carbonaceous particle 211 of metal level 212 to sinter the compound bed of material 21 of carbonaceous into surface coverage.Then proceed to step S12.

In step S12, the carbonaceous compound bed of material 21 of the mode of utilizing sintering after with sintering is incorporated on this metal system matrix 22.

In present embodiment, the preferably before the carbonaceous particle 211 that plural number is coated with metal level 212 is arranged on this metal system matrix 22, more is included in the step of these metal level 212 surface coverage anti oxidation layers.These anti-oxidant series of strata are in order to prevent the metal level oxidation.These anti-oxidant series of strata are selected from wherein one of silver layer and group that nickel dam is formed.

And, this carbonaceous particle 211 is to can be diamond or graphite etc., this metal level 212 is to be selected from wherein one of copper layer, aluminium lamination, silver layer, nickel dam and cobalt group that layer is formed, and these carbonaceous particle 211 magnitude range are 1 μ m-2mm, and is preferred range with 100 μ m-150 μ m.

It should be noted that at this compound bed of material 21 of this carbonaceous also can be made of plural carbonaceous particle 211 and plural metallic particles 213 mutual sintering.

And the sintering processing of the various embodiments described above includes the sintering processing that decompression sintering, vacuum-sintering, microwave sintering etc. can cause hole.Moreover this sintering temperature system is lower than 1100 ℃ to avoid the characteristic of influence or infringement diamond.And the carbonaceous particle metal coverage mode of the various embodiments described above comprises general plating, chemical plating, barrel plating, sol-gal process etc.

It should be noted that at this, carbonaceous particle covers the technology of metal, because of carbon can't be directly and metals such as copper, aluminium, nickel produce chemical bonded refractory, therefore the suitable surperficial carbonization treatment of metal level previous crops need covered, as on carbonaceous particle, applying one deck Ti (titanium), W (tungsten), Cr (chromium), Si metals such as (silicon) earlier, make itself and carbonaceous particle form carbide, as TiC, WC, Cr _xC _x, SiC etc., cover the layer of metal layer at last again.

And general graphite has directionality, and the coefficient of conductivity of its horizontal direction is ten times of vertical direction, and the utility model covers the directionality that metal can evenly heat on graphite, in order to the conduction of heat; Moreover the utility model can cover metal level on direction-free graphite nodule because graphite nodule is non-directional, so its heat conduction be etc. to.

Compared to known techniques, the radiator structure of the utility model is to have the mutual sintering of plural carbonaceous particle of metal level to be constituted with surface coverage, make respectively and have cellular structure between this carbonaceous particle, therefore, formation has the structure of splendid fluid thermal conductibility and thermal diffusivity, and then can reach the effect of rapid heat radiation.Simultaneously, the manufacture method of the heat radiation knot of the utility model, system directly forms metal level in the surface of this carbonaceous particle to cover, again with the mode general of sintering respectively this carbonaceous particle combine, make to have cellular structure each other, so, not only utilize carbonaceous particle itself to have the characteristic of good conductive, and can reach good radiating effect, and, the utility model does not need accurate control temperature and pressure in manufacturing process, so processing procedure is simple and can reduce cost of manufacture.Moreover the utility model overall structure is simple, so the heat structure of the utility model is real has solved known disadvantages, has high industrial utilization in fact.

Above-mentioned specific embodiment only is characteristics and the effect in order to illustration the utility model, but not in order to limit the utility model.Have in the technical field under any and know that usually the knowledgeable all can be under the spirit and category of the utility model, modify and change for above-mentioned embodiment.Therefore, the rights protection scope of the utility model, claim that should be as described later is listed.

Claims

1. radiator structure is characterized in that comprising at least: the compound bed of material of carbonaceous, it is that the mutual sintering of plural carbonaceous particle that is coated with metal level respectively by the surface is constituted.

2. a kind of radiator structure according to claim 1 is characterized in that: the compound bed of material of this carbonaceous system is made of plural metallic particles and the mutual sintering of carbonaceous particle.

3. a radiator structure is characterized in that being to comprise at least: metal system matrix; And the compound bed of material of carbonaceous, be to be formed on this metal system matrix, it is to have the mutual sintering of plural carbonaceous particle of metal level to be constituted by surface coverage, is formed with cellular structure in the compound bed of material of this carbonaceous.

4. a kind of radiator structure according to claim 3 is characterized in that: the cellular structure that the compound bed of material of this carbonaceous system is made of plural metallic particles and the mutual sintering of carbonaceous particle.

5. radiator structure, it is characterized in that being to comprise at least: metal system matrix, cording have a chamber; And the compound bed of material of carbonaceous, be that the plural carbonaceous particle that is coated with metal level respectively by the surface links institute mutually and constitutes, the compound bed of material of this carbonaceous system is formed at the internal face of the chamber of this metal system matrix.

6. a kind of radiator structure according to claim 5 is characterized in that: wherein the compound bed of material of this carbonaceous is to link institute mutually by plural metallic particles and carbonaceous particle to constitute.

7. according to claim 1 or 3 or 5 described radiator structures, it is characterized in that: these metal series of strata are selected from wherein one of copper layer, aluminium lamination, silver layer and group that nickel dam is formed.

8. according to claim 2 or 4 or 6 described radiator structures, it is characterized in that: this metallic particles system is selected from wherein one of copper, aluminium, silver and group that nickel is formed.

9. according to claim 1 or 2 or 3 or 4 or 5 or 6 described radiator structures, it is characterized in that: this carbonaceous particle system is selected from wherein one of diamond and group that graphite is formed.

10. according to claim 3 or 5 described radiator structures, it is characterized in that: the compound bed of material of this carbonaceous is incorporated on this metal system matrix in the mode of sintering.

11. according to claim 1 or 2 or 3 or 4 or 5 or 6 described radiator structures, it is characterized in that: this carbonaceous particle magnitude range is 1 μ m-2mm.

12. radiator structure according to claim 11 is characterized in that: this carbonaceous particle size preferred range is 100 μ m-150 μ m.

13. a radiator structure, it is characterized in that being to comprise at least: metal system matrix, cording have a chamber; And the compound bed of material of carbonaceous, be that the mutual sintering of plural carbonaceous particle that is coated with metal level respectively by the surface is constituted, the compound bed of material of this carbonaceous lies in the chamber of this copper matrix and forms cellular structure.

14. radiator structure according to claim 13 is characterized in that: the cellular structure that the compound bed of material of this carbonaceous system is made of plural metallic particles and the mutual sintering of carbonaceous particle.