CN204425876U - A kind of heat abstractor with composite construction - Google Patents
A kind of heat abstractor with composite construction Download PDFInfo
- Publication number
- CN204425876U CN204425876U CN201520118166.3U CN201520118166U CN204425876U CN 204425876 U CN204425876 U CN 204425876U CN 201520118166 U CN201520118166 U CN 201520118166U CN 204425876 U CN204425876 U CN 204425876U
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- China
- Prior art keywords
- heat
- fin
- heat pipe
- aluminum matrix
- matrix composite
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Abstract
The utility model discloses a kind of heat abstractor with composite construction, it comprises radiator fan, by the interconnective fin of heat pipe and heat conduction end, it is characterized in that, described fin is made up of carborundum aluminum matrix composite, described heat pipe is copper conductor tube, and together with described carborundum aluminum matrix composite direct sintering, utilize the expansion coefficient difference of these two kinds of materials (copper conductor tube ﹥ carborundum aluminum matrix composite) thus save the use of boundary material.Described heat conduction end and operational heat source link together.Usefulness of the present utility model is: in heat transfer process, thermal coefficient of expansion due to aluminum silicon carbide composite material is less than the thermal coefficient of expansion of copper, therefore the contact-making surface of aluminium base fin and heat pipe can combine more closely, thus add the useful life of heat abstractor, improve overall heat dispersion.
Description
Technical field
The utility model belongs to field of radiating, is specifically related to a kind of heat abstractor with composite construction.
Background technology
Present stage, heat pipe has the advantage compared with high heat transfer amount because of it, has been widely used in the electronic component of the larger caloric value of tool.Heat pipe technology vacuumizes in metal tube, pour into working media, sealing, when ambient temperature residing for its two ends is different, the liquid working media of inside, temperature higher one end absorbs the phase transformation of heat generating gasification, evaporate into the other end that temperature is lower, there is liquefaction phase transformation in distribute heat, flow back into one end that temperature is higher again, continuous circulation, thus make metal tube can carry out heat transfer with extreme efficiency to two ends environment, at temperature lower one end condenses, heat is distributed by thermal release, the heat abstractor that is delivered to condensation outer end.Thus realize dispelling the heat to electronic component.The heat that electronic component produces, in the motion of heat pipe inner loop, conducts, distributes by working media endlessly.
Current electronic product constantly tends to compact future development, and the heating power of its internal electronic element is more and more higher, it is important that electronic product heat dissipation problem in the space constantly reduced becomes all the more, this just need heat radiation product move towards compact while, more need higher heat transfer, heat dispersion.
Heat radiation device of thermal conduction tube of the prior art adopts aluminium base fin to join radiator fan substantially, by heat pipe and aluminium base fin compressed together, heat passes to aluminium base fin by heat pipe, cross-ventilation is increased by radiator fan, heat in aluminium radiator fin is dispersed in air and goes, finally realize the heat radiation that electronic component produces.The greatest drawback of this sets of plan of current employing is, heat pipe made of copper and aluminium radiator fin after operating ambient temperature raises, due to thermal expansion coefficient difference (the thermal coefficient of expansion 16*10 of copper of copper and aluminium
-6m/k is less than the thermal coefficient of expansion 25*10 of aluminium
-6m/k) heat pipe and aluminium radiator fin contact-making surface is caused to depart from, thus the interface resistance added between heat pipe and aluminium radiator fin, heat cannot better be delivered on aluminium radiator fin by heat pipe faster, cause integral heat sink efficiency low, adopt at present for this phenomenon and add boundary material-thermoconductive glue class (as shown in Figure 1), but the heat conductivility of this kind of material is poor, and useful life is short, thus fails well to address this problem.
Utility model content
In order to solve the problem of prior art, the utility model provides a kind of heat abstractor with composite construction, the integral heat sink effect of heat radiation device of thermal conduction tube can be improved, increase the useful life of product.
This uses novel technique improvement scheme as follows:
A kind of heat abstractor with composite construction, comprise radiator fan, by the interconnective fin of heat pipe and heat conduction end, it is characterized in that, described fin is made up of carborundum aluminum matrix composite (or aluminum matrix composite of aluminum-base silicon carbide composite material or SiC reinforcement), described heat pipe is copper conductor tube, and together with described carborundum aluminum matrix composite direct sintering, not Presence of an interface material between copper conductor tube and carborundum aluminum matrix composite.Described heat conduction end and operational heat source link together.
Carborundum aluminum matrix composite is made green compact by its concrete preparation method, is embedded in by described heat pipe (copper pipe) in described carborundum aluminum matrix composite, in nitrogen atmosphere protection, be sintered to 500 DEG C-700 DEG C and make.
Usefulness of the present utility model is: in heat transfer process, component temperature raises and produces expansion, the low (6-9*10 of the thermal coefficient of expansion due to aluminum-base silicon carbide composite material
-6m/k), the thermal coefficient of expansion (16*10 of copper is less than
-6m/k), therefore the contact-making surface of fin and heat pipe can combine more closely.The heat radiation device of thermal conduction tube adopting this scheme to do not only increases useful life, and improve overall heat dispersion, also solve existing scheme product again in the course of work temperature raise, produce the problem that thermal expansion causes contact interface peeling and uses the boundary material life-span short.
Accompanying drawing explanation
Fig. 1 is the sectional view of heat pipe of the prior art and aluminium base fin.
Fig. 2 is the sectional view of heat pipe of the present utility model and fin.
Fig. 3 is the schematic diagram of the utility model heat abstractor.
Reference numeral: 1 is heat pipe; 2 is fin; 3 is boundary material; 4 is radiator fan; 5 is heat conduction end; 6 is operational heat source.
Embodiment
Now by reference to the accompanying drawings the utility model is made and illustrating.
As shown in Figure 1, heat abstractor of the prior art be by heat pipe 1 and aluminium base fin 2 compressed together.Have between the two and increase heat conducting boundary material-thermoconductive glue 3, but the heat conductivility of this kind of material is poor, and useful life is short, thus not can solve heat problem of transmission.
As shown in Figure 2, the heat pipe 1 in the utility model is embedded among the fin 2 that carborundum aluminum matrix composite makes.The coefficient of expansion due to fin 2 is less than heat pipe 1, so when being heated, both contact-making surfaces can closely combine, thus without any need for boundary material.
As shown in Figure 3, the heat abstractor with composite construction of the present utility model, comprises radiator fan 4, by the interconnective fin 2 of heat pipe 1 and heat conduction end 5, described fin is made up of carborundum aluminum matrix composite, described heat pipe is copper conductor tube, and is sintered together with fin.The heat that operational heat source 6 produces passes to heat pipe 1 by heat conduction end 5, and heat passes to fin 2 by heat pipe 1 again, increases cross-ventilation, distribute heat in air finally by radiator fan 4.Carborundum aluminum matrix composite is made green compact by its concrete preparation method, is embedded in by described heat pipe in described carborundum aluminum matrix composite, in nitrogen atmosphere protection, be sintered to 500 DEG C-700 DEG C and make.
Certain above-mentioned execution mode, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, all should be encompassed within protection range of the present utility model.
Claims (2)
1. one kind has the heat abstractor of composite construction, it comprises radiator fan, by the interconnective fin of heat pipe and heat conduction end, it is characterized in that, described fin is made up of carborundum aluminum matrix composite, described heat pipe is copper conductor tube, and together with described carborundum aluminum matrix composite direct sintering, not Presence of an interface material between copper conductor tube and carborundum aluminum matrix composite.
2. the heat abstractor with composite construction according to claim 1, is characterized in that, described heat conduction end and operational heat source link together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118166.3U CN204425876U (en) | 2015-02-27 | 2015-02-27 | A kind of heat abstractor with composite construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118166.3U CN204425876U (en) | 2015-02-27 | 2015-02-27 | A kind of heat abstractor with composite construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425876U true CN204425876U (en) | 2015-06-24 |
Family
ID=53476195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520118166.3U Expired - Fee Related CN204425876U (en) | 2015-02-27 | 2015-02-27 | A kind of heat abstractor with composite construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425876U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385781A (en) * | 2015-07-30 | 2017-02-08 | 湖南金马铝业有限责任公司 | Improved heat dissipation apparatus and production technology thereof |
| CN113692198A (en) * | 2021-08-26 | 2021-11-23 | 哈尔滨铸鼎工大新材料科技有限公司 | Silicon-aluminum alloy built-in cooling structure and forming method thereof |
-
2015
- 2015-02-27 CN CN201520118166.3U patent/CN204425876U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385781A (en) * | 2015-07-30 | 2017-02-08 | 湖南金马铝业有限责任公司 | Improved heat dissipation apparatus and production technology thereof |
| CN113692198A (en) * | 2021-08-26 | 2021-11-23 | 哈尔滨铸鼎工大新材料科技有限公司 | Silicon-aluminum alloy built-in cooling structure and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |