CN103234376A - High-performance composite-structure super heat-conductive flat heat pipe - Google Patents
High-performance composite-structure super heat-conductive flat heat pipe Download PDFInfo
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- CN103234376A CN103234376A CN2013101801375A CN201310180137A CN103234376A CN 103234376 A CN103234376 A CN 103234376A CN 2013101801375 A CN2013101801375 A CN 2013101801375A CN 201310180137 A CN201310180137 A CN 201310180137A CN 103234376 A CN103234376 A CN 103234376A
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- heat pipe
- heat
- flat heat
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- seal casinghousing
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Abstract
The invention provides a composite-structure super heat-conductive flat heat pipe which is characterized by comprising a sealing casing, at least three branch ribs are arranged inside the sealing casing, the inside of the sealing casing is divided into a plurality of independent steam cavities through the branch ribs, a heat transfer working medium is respectively arranged in the steam cavities, a groove with a triangular section is arranged on an inner wall of the sealing casing, at least one tubular capillary structure formed by a metal net or foam metal is arranged in each steam cavity, and the section of the tubular capillary structure is rectangular or circular. The composite-structure super heat-conductive flat heat pipe is a heat conduction component with super heat conductive performance. Apparent heat conductivity of the composite-structure super heat-conductive flat heat pipe is about ten thousand times as high as that of the same metal material. Heat exchanging capacity of the flat heat pipe is 5-20 times as high as that of a traditional circular heat pipe with the same surface area, loading capacity of the flat heat pipe is more than 10-20 times as high as that of the traditional circular heat pipe, and the cost of the flat heat pipe is only less than 1/3 of that of the traditional heat pipe.
Description
Technical field
The present invention relates to a kind of high-performance composite construction superconducting flat heat pipe.
Background technology
Along with the develop rapidly of industries such as IT, communication, power electronics, LED, green energy resource, wherein the heating of used electronic element and thermal losses power are also improving constantly, and utilize traditional radiating subassembly to be difficult to well solve relevant hot arraign topic.
In heat high-power, high heat source density transmits, heat-transferring assembly heat pipe and aluminium flat-plate heat pipe are widely used in the radiating module now, as shown in Figure 1, be the conventional heat pipe fundamental diagram, described heat pipe comprises housing 12, be provided with fluid passage 13 and steam channel 14 in the housing 12, be provided with imbibition core capillary porous material 18 in the fluid passage 13, will be pumped into 1.3 * (10 in the housing 12
-3～10
-4) fill with an amount of hydraulic fluid after the negative pressure of Pa, make to be sealed after being full of liquid in the imbibition core capillary porous material of being close to cavity inner wall.One end of housing 12 is evaporator section (bringing-up section) 15, and the middle part is adiabatic section 16, and the other end is condensation segment (cooling section) 17.Liquid carburation by evaporation when one end of housing 12 is heated in the imbibition core capillary porous material 18, steam flow to the other end and emit heat and condense into liquid under small pressure reduction, liquid flows back to evaporator section along imbibition core capillary porous material 18 by the effect of capillary force.So circulate endlessly, heat Q reaches the other end by an end of heat pipe.Housing 12 is mainly based on the thin-walled copper tube, and imbibition core capillary porous material more than 18 is based on structure or composite constructions such as sintered powder, braided metal net, grooves, and working solution mostly is high purity water greatly.Simple, the technical maturity of this HP processing procedure, for industry generally adopts, hot transmission quantity is little, transmission range short, flatten problems such as yielding, that structural strength is low but it has, and is especially flattening 2.0mm when following, heat conveyance performance applied defect such as significantly decay.
As shown in Figure 2, be conventional aluminum flat-plate heat pipe fundamental diagram, described conventional aluminum flat-plate heat pipe comprises housing 6, is provided with fluid passage 7 and steam channel 8 in the housing 6, will be pumped into 1.0 * (10 in the housing 6
-2～10
-3) fill with an amount of hydraulic fluid sealing after the negative pressure of Pa.One end of housing 6 inside is evaporator section (bringing-up section) 9, and the middle part is adiabatic end 10, and the other end is condensation segment (cooling section) 11.Liquid carburation by evaporation when one end of housing 6 is heated, steam flow to the other end and emit heat Q and condense into liquid under small pressure reduction, liquid flows back to evaporator section along gravity direction, so circulation endlessly, heat reaches the other end by an end of heat pipe.
The aluminium flat-plate heat pipe is many to be housing with the micro slot array pipe, and by the phase-change heat transfer of working medium in the seal casinghousing, and the capillary force of utilizing gravity or imbibition core is back to fire end with the hydraulic fluid of colling end, thereby constitutes heat transmission circulation.So that hydraulic fluid when flowing back to evaporator section from condensation segment, heat pipe has reached the capillary limit when the capillary force deficiency, and the imbibition core of evaporator section can dry up.And the many surface tension by the conduit edges and corners of the imbibition core capillary force of aluminium flat-plate heat pipe produce, capillary force relatively a little less than, the backflow of its cooling fluid is mainly finished by the gravity effect, so the heat radiation product made from the aluminium flat-plate heat pipe generally adopt thermal source below, condensation segment is in the vertical occupation mode on top, and this has also had a strong impact on the range of application of aluminium flat-plate heat pipe.And, because steam channel and return flow line can not separate fully, also influenced the heat conveyance performance of conventional aluminum flat-plate heat pipe.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of thermal resistance is little, thermal response is quick, heat output is big, volume in light weight is little, simple in structure, structural strength is big, can be at the agravic composite construction superconducting flat heat pipe that uses after the match.
In order to solve the problems of the technologies described above, technical scheme of the present invention has provided a kind of composite construction superconducting flat heat pipe, it is characterized in that, comprise seal casinghousing, seal casinghousing inside is provided with at least three buttress, seal casinghousing inside is divided into a plurality of independently steam cavitys via described buttress, be provided with heat-transfer working medium in the steam cavity, it is leg-of-mutton groove that the seal casinghousing inwall is provided with the cross section, be provided with the tubulose capillary structure that at least one is made of wire netting or foam metal in each steam cavity, the cross section of described tubulose capillary structure is rectangle or circle.
Preferably, described at least three buttress be arranged in parallel, and it is leg-of-mutton groove that the outer wall of buttress also is provided with the cross section.
Preferably, the angle α of described groove is 5 °～45 °, and depth D is 0.2mm～0.7mm.
Preferably, the mesh of described wire netting is 150～300 orders, and the aperture of described foam metal is 100～200 orders.
Preferably, the material of described wire netting or foam metal is copper, aluminium, steel or nickel steel.
Preferably, the thickness T of described seal casinghousing is between 2.0mm～8.0mm, and width W is 12.0mm～100.0mm.
Compared with prior art, the invention has the beneficial effects as follows:
Composite construction superconducting flat heat pipe of the present invention is a kind of heat conducting element with superior heat conductivity energy.The apparent heat conductivity of composite construction superconducting flat heat pipe is about 10,000 times of same metal material pyroconductivity, be 5～20 times of exchange capability of heat with traditional circular heat pipe of same surface area, bearing capacity is more than 10～20 times of the latter, and cost then has only below 1/3 of conventional heat pipe.
Description of drawings
Fig. 1 is the conventional heat pipe fundamental diagram;
Fig. 2 is conventional aluminum flat-plate heat pipe fundamental diagram;
Fig. 3 is can and the buttress structural representation of composite construction superconducting flat heat pipe;
Fig. 4 is can and the buttress sectional view of composite construction superconducting flat heat pipe;
Fig. 5 is can and the buttress enlarged drawing of composite construction superconducting flat heat pipe;
Fig. 6 is the groove schematic diagram of composite construction superconducting flat heat pipe;
Fig. 7 is composite construction superconducting flat heat pipe structure schematic diagram among the embodiment 1 (not shown whole 5 buttress);
Fig. 8 is composite construction superconducting flat heat pipe structure schematic diagram among the embodiment 2;
Fig. 9 is composite construction superconducting flat heat pipe structure schematic diagram among the embodiment 3.
The specific embodiment
For the present invention is become apparent, now with preferred embodiment, and conjunction with figs. is described in detail below.
A kind of composite construction superconducting flat heat pipe comprises seal casinghousing 1, and generally between 2.0mm～8.0mm, width is between 12.0mm～100.0mm for the thickness of seal casinghousing 1.As shown in Figure 4, seal casinghousing 1 inside is provided with five buttress 2, as shown in Figure 5, seal casinghousing 1 inside is divided into 6 independently steam cavitys 3 via described buttress 2, be provided with heat-transfer working medium in the steam cavity 3, it is leg-of-mutton groove 4 that seal casinghousing 1 inwall is provided with the cross section, is provided with a tubulose capillary structure 5 that is made of wire netting in each steam cavity 3, and the cross section of described tubulose capillary structure 5 is rectangle.Described five buttress 2 be arranged in parallel, and it is leg-of-mutton groove 4 that the outer wall of buttress 2 also is provided with the cross section.
With aluminium or copper as seal casinghousing 1 used material, by extrusion modling, produce flat can 1 as shown in Figure 3, and in can 1, process buttress 2, buttress 2 had both been strengthened the structural strength of seal casinghousing 1, simultaneously seal casinghousing 1 was divided into several independently steam cavitys 3.Processing small cross section at seal casinghousing 1 inner surface is leg-of-mutton groove 4, and as shown in Figure 6, the angle α of groove 4 is 5 °, and the depth D of groove 4 is 0.2mm.Groove 4 provides certain capillary force for the backflow of heat-transfer working medium; Can effectively promote the heat transfer property of flat-plate heat pipe.But in high heat flux or the transmission of high-power heat and negative G application, the capillary force that only relies on groove 4 is not nearly enough, also need constitute compound capillary structure at the additional new capillary structure of surface of shell, as shown in Figure 7, make the tubulose capillary structure 5 that the cross section is rectangle with the copper mesh of 150 order mesh, by wearing the net tool tubulose capillary structure 5 is located and adherent placing in the steam cavity 3, thereby make the seal casinghousing 1 of tubulose capillary structure and with groove 4 constitute the dull and stereotyped housing of composite construction.The dull and stereotyped housing of composite construction has excellent compound capillary structure, and working medium return flow line and steam channel are separated, thereby can significantly promote composite construction superconducting flat Heat Transfer of Heat Pipe on Heat Pipe performance.
Composite construction superconducting flat heat pipe utilizes as mentioned above the dull and stereotyped housing of composite construction to be seal casinghousing and capillary structure, with the sealing of composite construction housing one end, and with injecting equivalent heat-transfer working medium water in each steam cavity 3, is evacuated to 1.0～6.0x10
-3Pa, the sealing other end.Formation has a plurality of independent sealed cavitys, and has the composite construction superconducting flat heat pipe of superpower capillary effect.Absorb heat at composite construction superconducting flat heat pipe, heat-transfer working medium becomes gas mutually, pass tubulose capillary structure 5, enter each independent steam cavity 3, be transferred to colling end, after colling end was condensed into liquid state, the capillary force by tubulose capillary structure 5 and groove 4 (flow channel for liquids) was back to evaporation ends with heat-transfer working medium, thereby forms heat transfer cycle in cavity.
Composite construction superconducting flat heat pipe has certain thickness buttress 2, is to form by an extrusion modling, and itself and last lower wall surface connect as one, and at the certain fillet of the intersection place moulding of intersecting with last lower wall surface; And on the surface of buttress 2, also form corresponding groove 4.Buttress 2 becomes relatively independent a plurality of little space with big flat seal casinghousing 1 space segmentation, thereby form a plurality of independently microcirculation heat pipe structures, buttress 2 can well strengthen the structural strength of seal casinghousing 1 simultaneously, improve general heat pipe owing to flatten the top and bottom depression that shaping causes, or because the not strong problem of structural strength that hollow structure causes.Buttress 2 can also increase the evaporation surface of seal casinghousing 1 transfer working medium in heat, can strengthen exchange heat and the conduction of the last lower wall surface of composite construction superconducting flat heat pipe simultaneously.
Composite construction superconducting flat heat pipe is a kind of heat conducting element with superior heat conductivity energy.The apparent heat conductivity of composite construction superconducting flat heat pipe is about 10,000 times of same metal material pyroconductivity, be 5～20 times of exchange capability of heat with traditional circular heat pipe of same surface area, bearing capacity is more than 10～20 times of the latter, and cost then has only below 1/3 of conventional heat pipe.
As shown in Figure 8, be composite construction superconducting flat heat pipe structure schematic diagram among the embodiment 2, described composite construction superconducting flat heat pipe is similar to embodiment 1, difference is: described seal casinghousing 1 inside is provided with three buttress 2, seal casinghousing 1 inside is divided into 4 independently steam cavitys 3 via described buttress 2, evenly is provided with 2 tubulose capillary structures 5 that are made of foamed aluminium in each steam cavity 3.The aperture of foamed aluminium is 100 orders.The angle α of groove 4 is 45 °, and depth D is 0.7mm.The thickness T of seal casinghousing 1 is 8.0mm, and width W is 100.0mm.
As shown in Figure 9, be composite construction superconducting flat heat pipe structure schematic diagram among the embodiment 3, described composite construction superconducting flat heat pipe is similar to embodiment 1, difference is: described seal casinghousing 1 inside is provided with three buttress 2, seal casinghousing 1 inside is divided into 4 independently steam cavitys 3 via described buttress 2, is provided with 4 cross sections in each steam cavity 3 and is the circular tubulose capillary structure 5 that is made of foamed aluminium.The aperture of foamed aluminium is 200 orders.The angle α of groove 4 is 30 °, and depth D is 0.5mm.The thickness T of seal casinghousing 1 is between the 5.0mm, and width W is 60.0mm.
Claims (5)
1. composite construction superconducting flat heat pipe, it is characterized in that, comprise seal casinghousing (1), seal casinghousing (1) inside is provided with at least three buttress (2), seal casinghousing (1) is inner to be divided into a plurality of independently steam cavitys (3) via described buttress (2), the steam cavity is provided with heat-transfer working medium in (3), it is leg-of-mutton groove (4) that seal casinghousing (1) inwall is provided with the cross section, be provided with at least one in each steam cavity (3) by the tubulose capillary structure (5) that wire netting or foam metal constitute, the cross section of described tubulose capillary structure (5) is rectangle or circle.
2. composite construction superconducting flat heat pipe as claimed in claim 1 is characterized in that, described at least three buttress (2) be arranged in parallel, and it is leg-of-mutton groove (4) that the outer wall of buttress (2) also is provided with the cross section.
3. composite construction superconducting flat heat pipe as claimed in claim 1 is characterized in that, the angle α of described groove (4) is 5 °～45 °, and depth D is 0.2mm～0.7mm.
4. composite construction superconducting flat heat pipe as claimed in claim 1 is characterized in that, the mesh of described wire netting is 150～300 orders, and the aperture of described foam metal is 100～200 orders.
5. composite construction superconducting flat heat pipe as claimed in claim 1 is characterized in that, the thickness T of described seal casinghousing (1) is between 2.0mm～8.0mm, and width W is 12.0mm～100.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101801375A CN103234376A (en) | 2013-05-15 | 2013-05-15 | High-performance composite-structure super heat-conductive flat heat pipe |
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|---|---|---|---|
| CN2013101801375A CN103234376A (en) | 2013-05-15 | 2013-05-15 | High-performance composite-structure super heat-conductive flat heat pipe |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654412A (en) * | 2015-01-28 | 2015-05-27 | 王海燕 | Ground radiation heating system and paving method thereof |
| CN106604621A (en) * | 2017-01-23 | 2017-04-26 | 苏州天脉导热科技有限公司 | Micro-channel aluminum vapor chamber |
| CN107017728A (en) * | 2017-05-27 | 2017-08-04 | 中山大洋电机股份有限公司 | A kind of phase-change heat motor case and its ventilated machine of application |
| CN107148196A (en) * | 2017-05-09 | 2017-09-08 | 华南理工大学 | The preparation method of ultra-thin Multi-functional aluminum substrate with multi-toothed plough machining trench features |
| CN107167008A (en) * | 2017-04-28 | 2017-09-15 | 华北电力大学 | A kind of ultra-thin panel heat pipe and its manufacture method |
| WO2017177539A1 (en) * | 2016-04-14 | 2017-10-19 | 青岛海尔特种电冰箱有限公司 | Heat conducting plate and method for producing plate body thereof |
| CN107764112A (en) * | 2016-08-16 | 2018-03-06 | 北京市天银地热开发有限责任公司 | A kind of flat-plate heat pipe, preparation method and phase transformation store heat-releasing device |
| CN108366508A (en) * | 2017-01-26 | 2018-08-03 | 中国科学院工程热物理研究所 | A kind of flexibility microflute group's radiator |
| CN109210975A (en) * | 2018-10-16 | 2019-01-15 | 华南理工大学 | A kind of heat accumulation heat dissipation microchannel aluminothermy pipe based on solid-liquid double-work medium |
| CN114657636A (en) * | 2022-04-06 | 2022-06-24 | 中国原子能科学研究院 | Metal organic chemical vapor deposition equipment |
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Patent Citations (3)
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| CN101493296B (en) * | 2009-02-27 | 2010-10-06 | 赵耀华 | Novel flat-plate heat pipe with stratose microflute subfebrile temperature tube group |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654412A (en) * | 2015-01-28 | 2015-05-27 | 王海燕 | Ground radiation heating system and paving method thereof |
| WO2017177539A1 (en) * | 2016-04-14 | 2017-10-19 | 青岛海尔特种电冰箱有限公司 | Heat conducting plate and method for producing plate body thereof |
| CN107764112A (en) * | 2016-08-16 | 2018-03-06 | 北京市天银地热开发有限责任公司 | A kind of flat-plate heat pipe, preparation method and phase transformation store heat-releasing device |
| CN106604621A (en) * | 2017-01-23 | 2017-04-26 | 苏州天脉导热科技有限公司 | Micro-channel aluminum vapor chamber |
| CN108366508A (en) * | 2017-01-26 | 2018-08-03 | 中国科学院工程热物理研究所 | A kind of flexibility microflute group's radiator |
| CN108366508B (en) * | 2017-01-26 | 2024-06-28 | 中国科学院工程热物理研究所 | Flexible micro-groove group heat dissipation device |
| CN107167008A (en) * | 2017-04-28 | 2017-09-15 | 华北电力大学 | A kind of ultra-thin panel heat pipe and its manufacture method |
| CN107148196A (en) * | 2017-05-09 | 2017-09-08 | 华南理工大学 | The preparation method of ultra-thin Multi-functional aluminum substrate with multi-toothed plough machining trench features |
| CN107017728A (en) * | 2017-05-27 | 2017-08-04 | 中山大洋电机股份有限公司 | A kind of phase-change heat motor case and its ventilated machine of application |
| CN107017728B (en) * | 2017-05-27 | 2019-11-26 | 中山大洋电机股份有限公司 | A kind of phase-change heat motor case and its ventilated machine of application |
| CN109210975A (en) * | 2018-10-16 | 2019-01-15 | 华南理工大学 | A kind of heat accumulation heat dissipation microchannel aluminothermy pipe based on solid-liquid double-work medium |
| CN114657636A (en) * | 2022-04-06 | 2022-06-24 | 中国原子能科学研究院 | Metal organic chemical vapor deposition equipment |
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Application publication date: 20130807 |