CN107764117A - A kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array - Google Patents
A kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array Download PDFInfo
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- CN107764117A CN107764117A CN201711019214.3A CN201711019214A CN107764117A CN 107764117 A CN107764117 A CN 107764117A CN 201711019214 A CN201711019214 A CN 201711019214A CN 107764117 A CN107764117 A CN 107764117A
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- cover board
- metal cover
- support column
- liquid
- lower metal
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 81
- 229910052751 metal Inorganic materials 0.000 claims abstract description 81
- 230000012010 growth Effects 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 13
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention discloses a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array, including upper and lower metal cover board and the upper and lower metal cover board liquid-sucking core support column integrative-structure that is generated respectively on the inside of upper and lower metal cover board；Closed cavity is formed by edge seal between the upper and lower metal cover board, and hydraulic fluid is filled with the airtight cavity after vacuumizing；The upper and lower metal cover board liquid-sucking core support column integrative-structure is included in the thin layer CNT grown on metal cover board inner surface and the vertical CNT of some continued growths in thin layer CNT specific region, and both respectively constitute flat-plate heat pipe capillary wick and flat-plate heat pipe support column；Upper and lower metal cover board support column is staggered, and forms the liquid-sucking core support column integrative-structure with fork row's form.The present invention has the characteristics that thermal conductivity height, small volume, in light weight, can both ensure that the heat transfer property and can of flat-plate heat pipe reaches mechanical strength security when heat pipe is run.
Description
Technical field
The present invention relates to a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array, belong to heat transfer
Technical field.
Background technology
As electronic component gradually develops to miniaturization, high power, high-performance direction, it can be adjoint in evolution
Higher heat flow density, heat dissipation problem is increasingly becoming the bottleneck problem for restricting the development of high integration electronic component.Flat-plate heat pipe
Due to its high thermal conductivity and good uniform temperature, the electric heat source of high heat flux can be shifted into diffusion rapidly, meet electricity
Sub- equipment is increasingly becoming to the requirement such as compactedness, reliability, flexibility of heat abstractor and researchs and solves high-power equipment surface and dissipate
The splendid selection of heat problem.
Common flat-plate heat pipe is made up of upper and lower two pieces of metal cover boards, and silk screen, agglomerated powder are often laid in the inner surface of cover plate
The wick structures such as end, the thermal conductivity of this wick structure is very low compared to the thermal conductivity of metal cover board, is heat pipe thermal resistance
One of important component, leverage the heat transfer property of heat pipe.Moreover, for flat-plate heat pipe, liquid flowing resistance is still suffered from
The problems such as power is big, steam channel size is big, volume is big, weight is heavy, manufacturing process is complicated, sealing difference.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides one kind and is based on carbon nano pipe array
Liquid-sucking core support column integrative-structure flat-plate heat pipe, there is thermal conductivity height, small volume, in light weight, can both ensure to put down
The heat transfer property and can of plate heat pipe reaches mechanical strength security during heat pipe operation.
Technical scheme：To achieve the above object, the technical solution adopted by the present invention is：
A kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array, including upper metal cover board, under
Metal cover board and the upper and lower metal cover board liquid-sucking core support column integrative-structure generated respectively on the inside of upper and lower metal cover board；
Wherein, closed cavity is formed by edge seal between the upper and lower metal cover board, and it is closed after vacuumizing
Hydraulic fluid is filled with cavity；The upper metal cover board liquid-sucking core support column integrative-structure is included in metal cover board inner surface
The thin layer CNT of upper growth and the vertical CNT of some continued growths in thin layer CNT specific region, two
Person respectively constitutes metal cover board capillary wick and upper metal cover board support column；The lower metal cover board liquid-sucking core support column is integrally tied
Structure equally includes receiving as the thin layer CNT of lower metal cover board capillary wick and as the vertical carbon of lower metal cover board support column
Mitron；The upper metal cover board support column is staggered with lower metal cover board support column, forms the liquid-sucking core with fork row's form
Support column integrative-structure.
Preferably, the thin layer CNT and vertical CNT are formed in one.
Preferably, the airtight cavity side that the upper metal cover board, lower metal cover board are formed is provided with topping up pipe.
Preferably, the upper metal cover board, the material of lower metal cover board select copper, and thickness is 0.5mm, length, width
Degree is respectively 55mm, 50mm.
Preferably, the thickness of the thin layer CNT is 50 μm；The thickness of the preferred CNT support column of the theoretical analysis
Spend for 0.5mm, a diameter of 5mm, spacing 10mm between two centers of circle.
The operation principle of the present invention is：Heat enters the bottom of capillary wick by the evaporator section metal cover board of heat pipe,
The high-termal conductivity of vertical CNT causes heat to pass to capillary wicking surface rapidly；Because vertical carbon nanotube diameter only has nanometer
Level, growing high density, equivalent to the liquid sucting core structure of a fine conduit, has very high capillary force, can be working medium edge
Larger surface tiling to open, make to be soaked in the liquid heat absorption evaporation in capillary structure rapidly；With evaporator section steam increasingly
More, steam will be delivered to condensation segment from evaporator section in the presence of steam pressure difference；Condensation segment metal cover board is in contact with low-temperature receiver, temperature
Spend relatively low, the vapours of arrival herein is condensed into liquid and enter in capillary wick, condensation release heat will be delivered to low-temperature receiver.It is perpendicular
The liquid that the capillary wick that straight CNT is formed can provide enough capillary forces and make to accumulate in capillary wick is back to evaporator section,
Also some liquid reflux channel provided by CNT support column returns to evaporator section, shortens liquid return flow path.
So circulation is gone down, and heat is constantly delivered to condensation segment from evaporator section.
Beneficial effect：A kind of liquid-sucking core support column integrative-structure flat board heat based on carbon nano pipe array provided by the invention
Pipe, relative to prior art, has advantages below：
(1) suction of the growing high density and nano-grade size that vertical CNT has equivalent to a fine conduit
Wick-containing structure, there is very high capillary force, when liquid flowing resistance is smaller, can provide enough capillary forces makes to accumulate in hair
Condensed fluid in thin core is back to evaporator section, and also some liquid provided by vertical CNT support column flows back logical
Road returns to evaporator section, shortens liquid return flow path；
(2) high-termal conductivity possessed by vertical CNT, solves the problems, such as that thermal conductivity is low in conventional wick structure,
So that the heat being passed to from metal cover board passes to rapidly capillary wicking surface by liquid evaporation, the heat transfer property of heat pipe is enhanced, greatly
The big thermal conductivity for improving heat pipe；
(3) liquid-sucking core and support column arrangement described in are being integrally formed based on vertical carbon nano pipe array, easy to process
Make.Upper and lower metal cover board uses edge seal, good airproof performance；Because the intensity of vertical CNT is high so that the support column
Structure is under rational structure design, the vapor space for the thinner and enough supporting ＆ stablizing that can be designed, and effectively prevents that flat board is warm
Pipe deformation collapses problem, and the very light in weight of vertical CNT so that weight is lighter under flat-plate heat pipe same volume, therefore
The ultra-thin panel heat pipe that volume is smaller, weight is lighter can be produced；
(4) the enough capillary forces that can be provided by vertical CNT capillary wick on wall due to liquid working substance and
CNT support column return flow line in cavity returns to evaporating surface, therefore heat pipe is carried out into random angle placement, to liquid
Back-flow velocity influences all very littles, adds the application flexibility of heat pipe.
Brief description of the drawings
Fig. 1 is the exploded perspective view of the embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section in support column of embodiment of the present invention direction；
Fig. 3 is the diagrammatic cross-section of in-plane of the embodiment of the present invention；
Fig. 4 is the liquid-sucking core and support column schematic diagram of upper metal cover board growth；
Fig. 5 is the liquid-sucking core and support column schematic diagram of lower metal cover board growth；
Fig. 6 is the scanning electron microscope (SEM) photograph of common vertical CNT.
Figure includes：1st, upper metal cover board, 2, lower metal cover board, 5, topping up pipe, 3, upper metal cover board liquid-sucking core support column
Integrative-structure, 31, upper metal cover board capillary wick, 32, upper metal cover board support column, 4, lower metal cover board liquid-sucking core support column one
Structure, 41, lower metal cover board capillary wick, 42, lower metal cover board support column.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
It is a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array as shown in Figure 1, 2, including
Upper metal cover board 1, lower metal cover board 2, and closed chamber is formed between upper metal cover board 1, lower metal cover board 2 by edge seal
Body, hydraulic fluid is filled with inside the airtight cavity after vacuumizing, the working medium used in the present embodiment is water.In upper metal cover board 1
Liquid-sucking core support column integrative-structure is generated respectively with the upper inner side of metal cover board 2, and metal cover board liquid-sucking core support column is integral in composition
Structure 3 and lower metal cover board liquid-sucking core support column integrative-structure 4.
The upper metal cover board liquid-sucking core support column integrative-structure 3 is included in the inner surface bottom grown of metal cover board 1
Thin layer CNT capillary wick 31, and in specific region, the carbon nanometer of some continued growths with certain array format
Pipe support column 32.Equally, also there are lower metal cover board capillary wick 41 and lower metal cover board support column 42 on lower metal cover board 2.
The liquid-sucking core is being integrally formed based on vertical carbon nano pipe array with support column arrangement.Except as liquid-sucking core
Bottom thin layer CNT, the longer vertical carbon nanometer of continued growth is distinguished in specific region on upper and lower two metal cover boards
Pipe forms the liquid-sucking core support column integrative-structure with in-line arrangement cylindrical support rod structure, is finally combined as having as support column
The complete support column return-flow structure of row's form is pitched, as shown in Figure 3.
Specifically, the material of upper metal cover board 1, lower metal cover board 2 selects copper, its size is selected according to practical application
Select, preferred thickness is 0.5mm herein, and length, width are respectively 55mm, 50mm, and upper metal cover board 1, lower metal cover board 2 are formed
Airtight cavity side is provided with topping up pipe 5, to carrying out welding envelope between upper metal cover board 1, lower metal cover board 2 and topping up pipe 5
Dress up type.
Liquid-sucking core support column integrative-structure is directly to grow vertical carbon nano pipe array in the inner surface of upper and lower metal cover board,
Thin layer CNT that a layer thickness is 50 μm is first generated in the bottom of inner surface as porous capillary cored structure, growth district
Length, width are respectively 50mm, 45mm, and then continued growth is longer in specific region on evaporation cover plate, condensation cover plate respectively
Vertical CNT as support column, the thickness for the cylindrical support post that the theoretical analysis is drawn is preferably 0.5mm, a diameter of
5mm, spacing 10mm between two centers of circle.The liquid-sucking core support column integrative-structure grown on upper metal cover board 1 and lower metal cover board 2 is such as
Shown in Fig. 4 and Fig. 5.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array, it is characterised in that including upper gold
Belong to cover plate (1), lower metal cover board (2) and the upper and lower metal cover board suction generated respectively on the inside of upper and lower metal cover board (1,2)
Wick-containing support column integrative-structure (3,4)；
Wherein, closed cavity is formed by edge seal between the upper and lower metal cover board (1,2), and it is close after vacuumizing
Hydraulic fluid is filled with closed chamber body；The upper metal cover board liquid-sucking core support column integrative-structure (3) is included in metal cover board
(1) the thin layer CNT and the vertical CNT of some continued growths on thin layer CNT grown on inner surface,
Both respectively constitute metal cover board capillary wick (31) and upper metal cover board support column (32)；The lower metal cover board liquid-sucking core branch
Dagger integrative-structure (4) equally including the thin layer CNT as lower metal cover board capillary wick (41) and is used as lower metal cover board
The vertical CNT of support column (42)；The upper metal cover board support column (32) and lower metal cover board support column (42) staggered row
Row, form the liquid-sucking core support column integrative-structure with fork row's form.
2. a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array according to claim 1,
Characterized in that, the thin layer CNT and vertical CNT are formed in one.
3. a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array according to claim 1,
Characterized in that, the airtight cavity side that the upper metal cover board (1), lower metal cover board (2) are formed is provided with topping up pipe (5).
4. a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array according to claim 1,
Characterized in that, the upper metal cover board (1), the material of lower metal cover board (2) select copper, and thickness is 0.5mm, length,
Width is respectively 55mm, 50mm.
5. a kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array according to claim 1,
Characterized in that, the thickness of the thin layer CNT is 50 μm；The thickness of vertical CNT is 0.5mm, a diameter of 5mm,
Spacing 10mm between two centers of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711019214.3A CN107764117A (en) | 2017-10-27 | 2017-10-27 | A kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711019214.3A CN107764117A (en) | 2017-10-27 | 2017-10-27 | A kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array |
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| CN107764117A true CN107764117A (en) | 2018-03-06 |
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|---|---|---|---|
| CN201711019214.3A Pending CN107764117A (en) | 2017-10-27 | 2017-10-27 | A kind of liquid-sucking core support column integrative-structure flat-plate heat pipe based on carbon nano pipe array |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253641A (en) * | 2018-08-30 | 2019-01-22 | 桂林电子科技大学 | A kind of polyimide flex flat-plate heat pipe |
| CN110195987A (en) * | 2018-02-24 | 2019-09-03 | 浙江三花汽车零部件有限公司 | A kind of heat-exchanger rig and the battery cooling apparatus with the heat-exchanger rig |
| JP2019194515A (en) * | 2018-05-04 | 2019-11-07 | 泰碩電子股▲分▼有限公司 | Reflux vapor chamber |
| JP2019194514A (en) * | 2018-05-04 | 2019-11-07 | 泰碩電子股▲分▼有限公司 | Gas-liquid separation type reflow vapor chamber |
| CN110966880A (en) * | 2019-10-31 | 2020-04-07 | 东莞领杰金属精密制造科技有限公司 | Ultrathin soaking plate and manufacturing method thereof |
| WO2021017731A1 (en) * | 2019-07-26 | 2021-02-04 | 昆山联德电子科技有限公司 | Composite-type vapor chamber and manufacturing method therefor |
| CN112665817A (en) * | 2020-12-15 | 2021-04-16 | 南京航空航天大学 | Variable-pitch capillary core micro-channel flow resistance measuring device |
| WO2021073158A1 (en) * | 2019-10-15 | 2021-04-22 | 昆山联德电子科技有限公司 | Thin capillary structure supporting vapor chamber |
| CN112729758A (en) * | 2020-12-15 | 2021-04-30 | 南京航空航天大学 | Fixed capillary core microchannel flow resistance measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110195987A (en) * | 2018-02-24 | 2019-09-03 | 浙江三花汽车零部件有限公司 | A kind of heat-exchanger rig and the battery cooling apparatus with the heat-exchanger rig |
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| CN112729758A (en) * | 2020-12-15 | 2021-04-30 | 南京航空航天大学 | Fixed capillary core microchannel flow resistance measuring device |
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