CN203336548U - Integrated radiator based on foamy copper and micro groove channels - Google Patents
Integrated radiator based on foamy copper and micro groove channels Download PDFInfo
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- CN203336548U CN203336548U CN2013203848102U CN201320384810U CN203336548U CN 203336548 U CN203336548 U CN 203336548U CN 2013203848102 U CN2013203848102 U CN 2013203848102U CN 201320384810 U CN201320384810 U CN 201320384810U CN 203336548 U CN203336548 U CN 203336548U
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Abstract
The utility model discloses an integrated radiator based on foamy copper and micro groove channels. The radiator comprises an aluminium substrate, the upper half portion of the aluminium substrate is provided with cooling fins, the lower half portion of the aluminium substrate comprises flat heat pipes and a lower cover, crossed semi-circular hole micro groove channels are formed in the upper surfaces of the flat heat pipes, and one ends of the groove channels are connected with a liquid filling opening used for filling working medium liquid. The lower cover is arranged on the bottoms of the flat heat pipes, and a layer of foam copper serving as capillary wicks is arranged inside the lower cover. The cooling fins, the flat heat pipes and the lower cover are fixedly connected in sequence. The machining method of the integrated radiator based on the foamy copper and the micro groove channels comprises the steps that simulation debugging is carried out first to obtain the optimum parameter, then the cooling fins, the micro groove channels and the lower cover are formed through injection molding by using a heated mode continuous casting method, the foam copper is fixedly placed in the lower cover, and then the cooling fins, the micro groove channels and the lower cover are fixedly connected in sequence. The integrated radiator uses the foam copper as the capillary wicks, combines the crossed semi-circular hole micro groove channel structure, and integrates the flat heat pipes and the cooling fins, heat dissipation is more efficient, and meanwhile, weight of components can be reduced and cost can be saved.
Description
Technical field
The utility model relates to LED heat radiation research field, particularly a kind of integral heat radiator based on foam copper and micro-channel.
Background technology
In the practical application of LED light fixture, one of them key problem should be noted that is particularly great power LED of LED() heat dissipation problem, how heat is many as far as possible and derive soon and be dispersed in the external world and go.
Traditional radiator manufacturing process be heat sink and flat-plate heat pipe is is separately manufactured and designed after, then with heat conductive silica gel by both adhesions, this has increased the thermal contact resistance of radiator undoubtedly.ZHANG etc. have proposed a kind of by samming device and the integrated flat-plate heat pipe structure of soaking device, and wherein soaking device has adopted the intersection pore passage structure.Experiment shows, the integral flat heat pipe structure can effectively reduce the thermal contact resistance of radiator, yet intersect the integral heat sink performance of pore passage structure, but fails to produce a desired effect, and its reason is the increase of thermal resistance to phase transition.
At present, most of flat-plate heat pipe is to utilize copper cored structure or the metallic film of screen type or sintered type to be used as capillary wick, has the not enough problem of heat radiation.
Therefore, how more efficiently LED to be dispelled the heat and to become a problem that has much Research Significance.
The utility model content
Main purpose of the present utility model is to overcome the shortcoming of prior art with not enough, a kind of integral heat radiator based on foam copper and micro-channel is provided, this device utilizes foam copper as capillary wick, in conjunction with intersecting semicircle orifice micro-channel structure, flat-plate heat pipe and radiating fin is integrated, there is more efficient thermolysis, can alleviate device weight simultaneously, cost-saving.
The purpose of this utility model realizes by following technical scheme: a kind of integral heat radiator based on foam copper and micro-channel, comprise the aluminum base material, and the first half of aluminum base material is radiating fin; The latter half comprises flat-plate heat pipe and lower cover, and the flat-plate heat pipe upper surface is provided with intersection semicircle orifice micro-channel, and conduit one end is connected with the implementation of port for being filled with working medium liquid; Lower cover is located at the flat-plate heat pipe bottom, is provided with the foam copper of one deck as capillary wick in lower cover; Radiating fin, flat-plate heat pipe and lower cover are fixedly connected sequentially.
Preferably, the porosity of described foam copper is 95%, and hole density is 95～99ppi.The shared percentage in foam metal mesopore that porosity described here is certain volume, hole density refers to the hole number on per inch length under microscope, adopt above-mentioned parameter can make the liquid backflow resistance less, and have less hole in foam copper, can produce larger capillary force.
Preferably, described aluminum base material adopts aluminium extruded AL6063 to make.This kind of base material has good pyroconductivity and processability, is easy to Surface Machining and manufacture.
Preferably, be welded with on described radiating fin and wear circular hole.
Preferably, described intersection semicircle orifice micro-channel makes by the hot-mold continuous cast method.This technique is to replace the water mold of common continuous casting with the casting mold of heating.More than metal is heated to fusing point in casting mold and keep liquid, the cooling device of casting outside casting mold, make foundry goods towards casting mold direction directional solidification.By controlling mold temperature, cooling distance, casting speed, the first-class technological parameter of metal hydraulic, control freezing interface near outlet, make the frictional force of foundry goods and casting mold very little, can cast out complex-shaped, wall is thin, tiny, any surface finish, accurate in size foundry goods.
Concrete, described working medium liquid is water.Select water as working medium liquid, it has larger evaporation latent heat and surface tension, and evaporation potential makes liquid take away more heat with less flow, and surface tension makes capillary wick, in aperture, one timing produces larger capillary attraction.
A kind of method of processing above-mentioned radiator comprises the following steps:
(1) utilize hot analysis software emulation experiment method to carry out quantitative optimal design to thickness, profile and the structure of radiator, profile, perforation number and structure, the structure of micro-channel, the volume of foam copper, the consumption of working medium liquid to radiating fin carry out experimental design, debug out optimal parameter;
(2) designed radiating fin and the three-dimensional shape of micro-channel structure according to step (1), make mould; Use the hot-mold continuous cast method, inject high temperature fluent metal aluminium, cast micro-channel structure and implementation of port structure after cooling; By radiating fin and the upper and lower integrally weldedization structure of micro-channel part, finally complete the processing of screw thread;
(3) use the method same with step (2) to make lower cover, fixedly put into the foam copper after experimental design, device and lower cover that step (2) welding is obtained are fixed, and make complete radiator;
(4) working-medium water of the optimum dose of designing to injection experiments in implementation of port, the deadend implementation of port.
The utility model compared with prior art, has following advantage and beneficial effect:
1, the utility model used porosity is high, surface area is large foam metal copper as capillary wick with intersect the acting in conjunction of semicircle orifice micro-channel, accelerated the condensing reflux of working medium liquid on the basis that increases cool solidifying area, further increase rate of heat dispation, optimize heat conductivility.
2, the foam metal copper mass that the utility model is used is light and handy, and what adopt wears the circular hole radiating fin and intersect the semicircle micro-channel and also can reduce material usage simultaneously, alleviates well the total quality of device.
The accompanying drawing explanation
The cross-sectional view that Fig. 1 is the utility model embodiment.
The schematic diagram of the intersection semicircle orifice micro-channel that Fig. 2 is the utility model embodiment.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
As shown in Figure 1, a kind of integral heat radiator based on foam copper and micro-channel, comprise aluminum base material 1, and the first half of described aluminum base material 1 is to be welded with the radiating fin 2 of wearing circular hole; Comprise flat-plate heat pipe and lower cover, the flat-plate heat pipe upper surface is provided with intersection semicircle orifice micro-channel 3, and conduit one end is connected with the implementation of port 4 for being filled with working medium liquid; Lower cover is located at the flat-plate heat pipe bottom, is provided with the foam copper 5 of one deck as capillary wick in lower cover; Radiating fin 2, flat-plate heat pipe and lower cover are fixedly connected sequentially.Contact-making surface 6 is arranged at lower cover and radiating fin bottom.
The intersection semicircle orifice micro-channel structure 3 of this example is made by the hot-mold continuous cast method.
The porosity of the foam copper layer 5 that this example is selected (the shared percentage in foam metal mesopore of certain volume) is 95%, and hole density (the hole number under microscope on per inch length) is 99ppi.In actual applications, can be adjusted hole density according to actual requirement, for example can be chosen in 95～99ppi scope.
The present embodiment selects water as working medium liquid.Described aluminum base material adopts aluminium extruded AL6063 to make.
The radiator of the present embodiment obtains by following steps:
The first step: utilize hot analysis software emulation experiment method to carry out quantitative optimal design to the aspects such as thickness, profile and structure of radiator, profile, perforation number and structure, the structure of micro-channel, the volume of foam copper, the consumption of working-medium water to radiating fin carry out experimental design, debug out optimal parameter, make the radiating effect of integral flat heat pipe reach best.
Second step: according to the three-dimensional shape of the designed radiator first half (the micro-channel structure that comprises radiating fin and samming device), make mould; Use the hot-mold continuous cast method, inject high temperature fluent metal aluminium, cast micro-channel structure and implementation of port structure (as Fig. 2) after cooling; By the upper and lower integrally weldedization structure of micro-channel part in radiating fin and flat-plate heat pipe, finally complete the processing of screw thread.
The 3rd step: use the method same with upper step to make lower cover, fixedly put into the foam copper after experimental design, and aim at amalgamation by welding the device obtained in upper step with lower cover, precisely weld in the two contact-making surface position, make complete integral flat heat pipe.
The 4th step: the working-medium water of the optimum dose of designing to injection experiments in implementation of port, the deadend implementation of port, prevent fluid seepage.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (6)
1. the integral heat radiator based on foam copper and micro-channel, is characterized in that, comprises the aluminum base material, and the first half of aluminum base material is radiating fin; The latter half comprises flat-plate heat pipe and lower cover, and the flat-plate heat pipe upper surface is provided with intersection semicircle orifice micro-channel, and conduit one end is connected with the implementation of port for being filled with working medium liquid; Lower cover is located at the flat-plate heat pipe bottom, is provided with the foam copper of one deck as capillary wick in lower cover; Radiating fin, flat-plate heat pipe and lower cover are fixedly connected sequentially.
2. the integral heat radiator based on foam copper and micro-channel according to claim 1, is characterized in that, the porosity of described foam copper is 95%, and hole density is 95～99ppi.
3. the integral heat radiator based on foam copper and micro-channel according to claim 1, is characterized in that, described aluminum base material adopts aluminium extruded AL6063 to make.
4. the integral heat radiator based on foam copper and micro-channel according to claim 1, is characterized in that, on described radiating fin, is welded with and wears circular hole.
5. the integral heat radiator based on foam copper and micro-channel according to claim 1, is characterized in that, described intersection semicircle orifice micro-channel makes by the hot-mold continuous cast method.
6. the integral heat radiator based on foam copper and micro-channel according to claim 1, is characterized in that, described working medium liquid is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203848102U CN203336548U (en) | 2013-06-28 | 2013-06-28 | Integrated radiator based on foamy copper and micro groove channels |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203848102U CN203336548U (en) | 2013-06-28 | 2013-06-28 | Integrated radiator based on foamy copper and micro groove channels |
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| CN203336548U true CN203336548U (en) | 2013-12-11 |
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| CN2013203848102U Expired - Fee Related CN203336548U (en) | 2013-06-28 | 2013-06-28 | Integrated radiator based on foamy copper and micro groove channels |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990274A (en) * | 2015-02-10 | 2016-10-05 | 上海量子绘景电子股份有限公司 | Heat conduction film and manufacturing method thereof |
| CN106793685A (en) * | 2016-12-09 | 2017-05-31 | 淳铭散热科技股份有限公司 | A kind of composite heat dissipation device |
-
2013
- 2013-06-28 CN CN2013203848102U patent/CN203336548U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990274A (en) * | 2015-02-10 | 2016-10-05 | 上海量子绘景电子股份有限公司 | Heat conduction film and manufacturing method thereof |
| CN105990274B (en) * | 2015-02-10 | 2018-06-15 | 上海量子绘景电子股份有限公司 | A kind of heat conducting film and preparation method thereof |
| CN106793685A (en) * | 2016-12-09 | 2017-05-31 | 淳铭散热科技股份有限公司 | A kind of composite heat dissipation device |
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| 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: 20131211 Termination date: 20160628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |