CN208079627U - A kind of lightweight heat sink - Google Patents
A kind of lightweight heat sink Download PDFInfo
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- CN208079627U CN208079627U CN201820334578.4U CN201820334578U CN208079627U CN 208079627 U CN208079627 U CN 208079627U CN 201820334578 U CN201820334578 U CN 201820334578U CN 208079627 U CN208079627 U CN 208079627U
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- heat
- conducting layer
- heat sink
- outer housing
- magnesium alloy
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Abstract
The utility model provides a kind of lightweight heat sink, including closed outer housing, and the heat-conducting layer of solid is equipped in outer housing, and outer housing is magnesium alloy covering, and the heat conductivility of heat-conducting layer is better than the heat conductivility of magnesium alloy covering.Lightweight heat sink provided by the utility model uses magnesium alloy covering as the outer housing of heat sink, for the aluminium alloy heat sink of same volume, the weight of heat sink can be also reduced in the case where meeting cooling plate structure intensity requirement, make its further lightweight, the interior heat-conducting layer for being equipped with solid among outer housing simultaneously, the heat conductivility of heat-conducting layer is better than the heat conductivility of magnesium alloy covering, the whole heat-conductive characteristic for further increasing heat sink, that is, improve the ability of heat sink rapid cooling in plate plane.
Description
Technical field
The utility model is related to spacecraft thermal control field, more particularly to a kind of lightweight heat sink.
Background technology
With the rapid development of science and techniques of defence, satellite class spacecraft is higher to meet its by integrated more function modules
Application requirement.To realize various functions, for the single machine electronic equipment in modules all to miniaturization, this is spacecraft heat
Control system brings the problem of heat source distribution dispersion and single heat source high heat flux density.When in order to eliminate equipment stable operation by
High heat flux density impacts the security risk brought, and electronic equipment is generally directly installed on the knot with cooling effect by designers
On structure plate so that the heat of each hot source point quickly uniformly arrives in plate plane, then outwardly by plate planar radiation.Cause
Requirement of this designer to this kind of radiating panel be：Under the premise of with enough structural strengths, have both in plate plane
The ability of quick temperature uniforming heat radiation.
In current satellite thermal control design, it is typically chosen answer of the aluminium alloy sheet as the such heat dissipation problem of solution,
This is the characteristics of being provided simultaneously with excellent heat-transfer capability and structural strength based on it.But this aluminium alloy expands hot plate in practical application
When, it has the following problems：1, the proportion of aluminium determines that aluminium alloy expands hot plate and cannot be satisfied higher lightweight requirements in weight；
2, it with the raising of electronic equipment on satellite cooling requirements, requires also to improve therewith for expanding the heat-sinking capability of hot plate in design, it is single
It is pure to cannot be satisfied higher cooling requirements using aluminium alloy panels.
Utility model content
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of lightweight heat sink.
The utility model provides a kind of lightweight heat sink, including closed outer housing, and the heat conduction of solid is equipped in outer housing
Layer, outer housing are magnesium alloy covering, and the heat conductivility of heat-conducting layer is better than the heat conductivility of magnesium alloy covering.
Preferably, heat-conducting layer is graphite linings.
Preferably, the outer surface of magnesium alloy covering is equipped with protection film layer.
Preferably, outer housing includes the upper shell and lower housing being oppositely arranged, the edge sealing of upper shell and lower housing
Connection.
Preferably, it is tightly connected as vacuum diffusion bonding.
Preferably, heat-conducting layer gluing is on the inner surface of outer housing.
Preferably, one of them in heat-conducting layer and outer housing is equipped with protrusion, another is equipped with groove, protrusion and groove grafting
Cooperation.
Preferably, the upper and lower side of heat-conducting layer is all equipped with 2 or more grooves, and the groove depth of groove is no more than heat conduction layer thickness
40%, be respectively equipped on the inner surface of upper shell and lower housing raised correspondingly with groove.
Preferably, the ratio between magnesium alloy covering and the projected area of heat-conducting layer in the vertical direction are 2:1~4:3, magnesium alloy
The wall thickness of covering is no more than 2mm, and the thickness of heat-conducting layer is not less than 2mm.
Compared with prior art, the utility model has following advantageous effect：
1, the utility model uses magnesium alloy covering as the outer housing of heat sink, and the structure that can not only meet heat sink is strong
Degree, and due also to the proportion of magnesium elements is 2/3rds of aluminium element, for the aluminium alloy heat sink of same volume, meeting
The weight that heat sink can be also reduced under cooling plate structure intensity requirement makes its further lightweight.
2, the utility model is better than magnesium by the interior heat-conducting layer for being equipped with solid among outer housing, the heat conductivility of heat-conducting layer
The heat conductivility of alloy covering further increases the whole heat-conductive characteristic of heat sink, that is, improves heat sink in plate plane
The ability of interior rapid cooling.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon：
Fig. 1 is the exploded perspective view for the lightweight cooling plate structure that the utility model embodiment provides；
Fig. 2 is the vertical view for the lower housing that the utility model embodiment provides.
Specific implementation mode
The utility model is described in detail with reference to specific embodiment.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made.
These belong to the scope of protection of the utility model.
Please refer to attached drawing 1-2, the utility model provides a kind of lightweight heat sink, including closed outer housing, in outer housing
Heat-conducting layer 1 equipped with solid, outer housing are magnesium alloy covering, and the heat conductivility of heat-conducting layer 1 is better than the thermal conductivity of magnesium alloy covering
Energy.
Lightweight heat sink includes closed outer housing, and seal chamber is formed in outer housing, heat-conducting layer is installed in seal chamber
1, and heat-conducting layer 1 is solid structure.Outer housing of the magnesium alloy covering as heat sink, the structure that can not only meet heat sink are strong
Degree, and due also to the proportion of magnesium elements is 2/3rds of aluminium element, for the aluminium alloy heat sink of same volume, meeting
The weight that heat sink can be also reduced under cooling plate structure intensity requirement makes its further lightweight.Meanwhile it being set in outer housing centre
There are the heat-conducting layer 1 of solid, the heat conductivility of heat-conducting layer 1 to be better than the heat conductivility of magnesium alloy covering, further increase heat sink
Whole heat-conductive characteristic improves the ability of heat sink rapid cooling in plate plane.
Preferably, heat-conducting layer 1 is graphite linings.
The material of heat-conducting layer 1 is graphite, and graphite can bear 1800 DEG C or more high temperature, and have anisotropy heat transfer property,
Its heat-conductive characteristic and high-melting-point performance are all better than magnesium alloy covering, and then increase the integral heat sink ability of heat sink.Certainly
The material of heat-conducting layer 1 is also not limited to graphite, other solid heat conductive materials with high heat conduction, high-melting-point performance are also applied for
Lightweight heat sink in the application.
Preferably, the outer surface of magnesium alloy covering is equipped with protection film layer.
Protection film layer can play a protective role to magnesium alloy covering, improve the corrosion resistance and wearability of magnesium alloy covering, into
And improve the service life of magnesium alloy covering.The protection film layer can by magnesium alloy covering through chemical conversion, anodic oxidation
Or the surface treatment methods such as surface modification are formed.In addition, magnesium alloy covering is such as, but not limited to cast magnesium alloy covering.
Preferably, outer housing includes the upper shell 2 being oppositely arranged and lower housing 3, the edge of upper shell 2 and lower housing 3
It is tightly connected.
Outer housing includes upper shell 2 and lower housing 3, and upper shell 2 is stacked and placed on the top of lower housing 3, and wherein upper shell 2 is under
The edge of shell 3 is tightly connected, and centre forms the seal chamber for placing heat-conducting layer 1.In addition, upper shell 2 and lower housing 3
Material can be identical, is magnesium alloy stressed-skin construction.It is further preferred that magnesium alloy covering is magnesium alloy thin harden structure.
Preferably, it is tightly connected as vacuum diffusion bonding.
Sealed connection between upper shell 2 and lower housing 3 will be upper in vacuum diffusion bonding using vacuum diffusion bonding
Shell 2 and the edge of lower housing 3 fit closely, and then the holding Jing Guo certain temperature and pressure under vacuum conditions, makes
The welding of the two is completed in the atom phase counterdiffusion at shell 2 and the edge of lower housing 3.After vacuum diffusion bonding, upper shell 2 with
The edge bonding strength of lower housing 3 is high, few to upper shell 2 and the damage at 3 edge of lower housing, and leakproofness between the two
It is good.
Preferably, 1 gluing of heat-conducting layer is on the inner surface of outer housing.
1 gluing of heat-conducting layer passes through adhesive on the inner surface of outer housing between heat-conducting layer 1 and the inner surface of outer housing
It is connected as one, increases the structural stability of heat sink, while the inner surface of heat-conducting layer 1 and outer housing can be filled using adhesive
Between gap, reduce hollowing situation appearance, also avoid heat-conducting layer 1 from shaking the appearance of situation in outer housing.Certainly, heat conduction
Connection type between layer 1 and outer housing is not limited to the mode connected above by adhesive, for example, outer housing with lead
Lead to machinery positioning or mechanical connection manner between thermosphere 1.
Preferably, adhesive includes poly-vinyl alcohol solution, polyvinyl butyral solution or epobond epoxyn, wherein poly-
For the concentration range of glycohol solution and polyvinyl butyral solution 8%~10%, epobond epoxyn includes epoxy resin
And curing agent, epoxy resin are 1 with curing agent mass ratio:1~3:1.
When using above-mentioned adhesives between outer housing and heat-conducting layer 1, adhesive is coated in the following table of upper shell 2
It is then that lower housing 3, heat-conducting layer 1 and upper shell 2 is whole successively on the outer surface in face, the upper surface of lower housing 3 and heat-conducting layer 1
It is neat to be stacked and pressed.After adhesive curing is complete, heat sink is integrally put into vacuum diffusion welding and is picked middle carry out vacuum
Diffusion welding (DW) makes the edge seal of upper and lower cover plates connect.Certainly, before application of adhesive, also it can be used acetone cleaning agent to leading
Thermosphere 1 and outer housing carry out surface cleaning and processing of rust removing, to improve adhesion strength between the two.
Meanwhile when using the adhesive of above-mentioned concentration in the application, the concentration of solution directly affects graphite linings and magnesium alloy
Adhesion strength between covering, suitable solution concentration can guarantee the adhesion strength between outer housing and heat-conducting layer 1.On meanwhile
The solidification rate for stating adhesive is fast, and after adhesive curing, is that permanent stablize connects between heat-conducting layer 1 and outer housing inner surface
It connects.
It is further preferred that the concentration range of poly-vinyl alcohol solution and polyvinyl butyral solution is 8%, epoxy resin is viscous
Mixture epoxy resin is 2 with curing agent mass ratio:1.
Preferably, the ratio between magnesium alloy covering and the projected area in the vertical direction of heat-conducting layer 1 are 2:1~4:3, magnesium closes
The wall thickness of golden covering is no more than 2mm, and the thickness of heat-conducting layer 1 is not less than 2mm.
The ratio between magnesium alloy covering and the projected area in the vertical direction of heat-conducting layer 1 are 2 in the application:1~4:3,
Ensure between upper shell 2 and lower housing 3 under the conditions of rational bonding area so that plane of the heat-conducting layer 1 in outer housing
Area is as big as possible, to improve the capacity of heat transmission of heat sink.
In addition, the heat conductivility of heat-conducting layer 1 is higher than the heat conductivility of magnesium alloy covering, to further increase leading for heat sink
Hot property needs the thickness proportion for controlling magnesium alloy covering and heat-conducting layer 1.The wall thickness of magnesium alloy covering is no more than in the application
The thickness of 2mm, heat-conducting layer 1 are not less than 2mm, can be in two conditions of the weight for ensureing outer shell construction intensity and control heat sink
Under, realize the thickness proportion increased between heat-conducting layer 1 and magnesium alloy covering, and then realize the heat conductivility for improving heat sink.
Preferably, one of them in heat-conducting layer 1 and outer housing is equipped with protrusion 4, another is equipped with groove 5, protrusion 4 and groove
5 is mating.
Heat-conducting layer 1 is equipped with the protrusion 4 that outside housing direction extends, outer housing be equipped with it is raised 4 mating recessed
Slot 5, alternatively, outer housing is equipped with the protrusion 4 extended to 1 direction of heat-conducting layer, heat-conducting layer 1 is equipped with mating with protrusion 4
Groove 5.Between heat-conducting layer 1 and outer housing by protrusion 4 with the mating mode of groove 5, may not only facilitate outer housing with
Location and installation between heat-conducting layer 1, and it is upwardly formed limit in the side being perpendicularly to the plugging direction, it avoids occurring between the two opposite
Offset.In addition, adhesive can coat the outer surface of groove 5 and protrusion 4, the company between outer housing and heat-conducting layer 1 is further increased
Connect stability.
Preferably, the upper and lower side of heat-conducting layer 1 is all equipped with 2 or more protrusions 4, and the height of protrusion 4 is no more than heat-conducting layer 1
It is respectively equipped on the inner surface of the 40% of thickness, upper shell 2 and lower housing 3 and raised 4 one-to-one grooves 5.
The upper side of heat-conducting layer 1 is equipped with 2 or more protrusions 4, is set on the upper shell 2 of the upper side of corresponding heat-conducting layer 1
There are 2 or more grooves 5, which is arranged in a one-to-one correspondence with groove 5.Similarly, the downside of heat-conducting layer 1 be equipped with 2 with
On protrusion 4, the lower housing 3 of the downside of corresponding heat-conducting layer 1 is equipped with 2 or more grooves 5, and the protrusion 4 and groove 5 are one by one
It is correspondingly arranged.By increasing protrusion 4 between heat-conducting layer 1 and upper shell 2 and lower housing 3 with groove 5 with number is combined, further increase
Add the connective stability between heat-conducting layer 1 and outer housing.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (9)
1. a kind of lightweight heat sink, which is characterized in that including closed outer housing, the heat conduction of solid is equipped in the outer housing
Layer, the outer housing are magnesium alloy covering, and the heat conductivility of the heat-conducting layer is better than the heat conductivility of the magnesium alloy covering.
2. lightweight heat sink according to claim 1, which is characterized in that the heat-conducting layer is graphite linings.
3. lightweight heat sink according to claim 1, which is characterized in that the outer surface of the magnesium alloy covering, which is equipped with, to be protected
Cuticular layer.
4. lightweight heat sink according to claim 1, which is characterized in that the outer housing includes the upper shell being oppositely arranged
It is tightly connected with the edge of lower housing, the upper shell and the lower housing.
5. lightweight heat sink according to claim 4, which is characterized in that described be tightly connected is vacuum diffusion bonding.
6. lightweight heat sink according to claim 1, which is characterized in that the heat-conducting layer gluing is in the outer housing
On surface.
7. lightweight heat sink according to claim 4, which is characterized in that wherein one in the heat-conducting layer and the outer housing
A to be equipped with protrusion, another is equipped with groove, and the protrusion is mating with the groove.
8. lightweight heat sink according to claim 7, which is characterized in that the upper and lower side of the heat-conducting layer is all equipped with 2
Above protrusion, 40% of height no more than the heat conduction layer thickness of the protrusion, the upper shell and lower housing
It is respectively equipped on inner surface and the one-to-one groove of the protrusion.
9. lightweight heat sink according to any one of claims 1 to 8, which is characterized in that the magnesium alloy covering with it is described
The floor space ratio of heat-conducting layer is 2:1~4:3, the wall thickness of the magnesium alloy covering is no more than 2mm, and the thickness of the heat-conducting layer is not small
In 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820334578.4U CN208079627U (en) | 2018-03-12 | 2018-03-12 | A kind of lightweight heat sink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820334578.4U CN208079627U (en) | 2018-03-12 | 2018-03-12 | A kind of lightweight heat sink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208079627U true CN208079627U (en) | 2018-11-09 |
Family
ID=64039134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820334578.4U Active CN208079627U (en) | 2018-03-12 | 2018-03-12 | A kind of lightweight heat sink |
Country Status (1)
| Country | Link |
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| CN (1) | CN208079627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471692A (en) * | 2018-03-12 | 2018-08-31 | 上海利正卫星应用技术有限公司 | A kind of lightweight heat sink |
| CN110430716A (en) * | 2019-06-30 | 2019-11-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The preparation method of efficient soaking plate |
-
2018
- 2018-03-12 CN CN201820334578.4U patent/CN208079627U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471692A (en) * | 2018-03-12 | 2018-08-31 | 上海利正卫星应用技术有限公司 | A kind of lightweight heat sink |
| CN110430716A (en) * | 2019-06-30 | 2019-11-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The preparation method of efficient soaking plate |
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