CN104457359B - There is the plate-type heat-pipe of split tunnel - Google Patents
There is the plate-type heat-pipe of split tunnel Download PDFInfo
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- CN104457359B CN104457359B CN201510000131.4A CN201510000131A CN104457359B CN 104457359 B CN104457359 B CN 104457359B CN 201510000131 A CN201510000131 A CN 201510000131A CN 104457359 B CN104457359 B CN 104457359B
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Abstract
The present invention relates to a kind of plate-type heat-pipe with split tunnel, this plate-type heat-pipe is the split tunnel arranging a group or more in one piece of panel-shaped base body, one group of split tunnel is made up of at least one evaporation channel and at least one condensation channel, separated by reinforcement between evaporation channel and condensation channel, reinforcement has capillary narrow slit.The working medium of phase-change heat-exchange effect it has been filled with, it is achieved the efficient heat transfer of heat pipe in passage.Plate-type heat-pipe of the present invention, the interface friction shearing force of vapour phase and liquid phase during heat pipe work can be greatly reduced, there is the remarkable advantages such as thermal resistance is low, exchange capability of heat is big, heat exchange efficiency is high, inclination angle scope is big, and it is lightweight, simple in construction, bearing capacity is strong, and manufacturing process is simple, is a kind of new heat pipe efficient, practical, with low cost.
Description
Technical field
The present invention relates to phase-change heat transfer and technical field of heat exchange, particularly to a kind of plate-type heat-pipe with split tunnel.
Background technology
In recent years, plate-type heat-pipe is due to heat exchange property height, it is simple at larger area uniformly transfer heat, being subject to people in fields such as microelectronics heat radiation, solar energy heating, recuperations of heat and pay close attention to more and more widely, research worker has carried out substantial amounts of research.Due to vehicle repair major reverse high-speed motion in same small passage in plate-type heat-pipe work process, produce very big liquid-vaqor interface frictional shearing, make heat transfer resistance be greatly increased, the heat-transfer capability of restriction heat pipe.It addition, existing plate-type heat-pipe manufacturing process is complex, manufacturing cost is high, becomes the bottleneck of its popularization and application.How to adopt efficient technological method for processing to manufacture a kind of heat pipe that liquid and vapor capacity in heat pipe work process can separate, reduces or eliminate liquid-vaqor interface frictional shearing, raising heat-transfer capability, become the focus of industry research.
Summary of the invention
Present invention aim at: the technical barriers such as, thermal resistance big, processed complex big for plate-type heat-pipe vapour-liquid frictional resistance, a kind of plate-type heat-pipe efficiently with split tunnel is provided, adopt processing method with low cost, reduce the interface friction shearing force of liquid and vapor capacity in passage, thus reducing the thermal resistance of heat pipe, improve heat-transfer capability, and there is the advantages such as lightweight, simple in construction, bearing capacity are strong, of many uses, easy for installation, the performance making plate-type heat-pipe significantly improves, and considerably increases its range of application.
The technical scheme is that, the described plate-type heat-pipe with split tunnel, it is characterized in that, this plate-type heat-pipe is the split tunnel arranging a group or more in one piece of panel-shaped base body, one group of split tunnel is made up of at least one evaporation channel and at least one condensation channel, separated by reinforcement between evaporation channel and condensation channel, reinforcement has capillary narrow slit.Often group split tunnel can be separate, or two ends UNICOM, has been filled with the working medium of phase-change heat-exchange effect in passage.
Hereinafter the present invention is made and further illustrating.
Described split tunnel is made up of micro-shape evaporation channel and condensation channel, and split tunnel may be disposed to a row or multi-row, and each row is one or more groups.
In described split tunnel, the shape of cross section of evaporation channel or condensation channel is circle, ellipse, triangle, square, rectangle, polygon or abnormity.
The evaporation channel of described plate-type heat-pipe or condensation channel inwall are light wall or are provided with groove, and groove shape can be circle, ellipse, triangle, square, rectangle, trapezoidal, swallow-tail form or Ω shape.
Can being equipped with capillary wick in described condensation channel, capillary wick type can be sintering, silk screen or nanometer powder capillary wick etc..
When in described split tunnel, evaporation channel and condensation channel are in upper-lower position, evaporation channel upper, condensation channel under.
The processing technique of described plate-type heat-pipe is characterized by adopting the method processing heat pipe matrix of global formation, and the method for global formation is extruding or punch forming.
Described plate-type heat-pipe is sequentially carried out evacuation, perfusion working medium, potting end when making, the mode that opposite heat tube two end sealed end is packaged is welding, splicing, hot pressing or colds pressing.
Described plate-type heat-pipe matrix material is metal or nonmetal or composite.
The outer surface of described plate-type heat-pipe is added with outer fin, to increase the capacity of heat transmission of tube surface, reduces surface resistance of heat transfer.
Described split tunnel refers to the passage of overall processing in panel-shaped base body, and its size belongs to the scope of micro heat pipe.
Being filled with the working medium of phase-change heat-exchange effect after described split tunnel is evacuated, formed heat pipe, often group split tunnel includes evaporation channel and condensation channel, and in general, the capillarity of condensation channel is better than evaporation channel.
Evaporation channel and the condensation channel shape of cross section of described plate-type heat-pipe split tunnel can be identical or different, and cross-sectional area can be identical or different, and passage internal channel shape and size can also be identical or different.
The plane that in described split tunnel, multichannel forms is perpendicular or parallel with the larger-size surface of plate-type heat-pipe or becomes arbitrary angle.
The sealing of its internal access port of described plate-type heat-pipe adopts and welds (including dissolving weldering, solid-state welding, agitating friction weldering, soldering), glueds joint, colds pressing, the method potting end of hot pressing.
The inclination angle scope that plate-type heat-pipe of the present invention is placed is more than similar heat pipe, its operation principle is: when described plate-type heat-pipe large scale plane and plane-parallel or in an acute angle with the angle of horizontal plane time, general evaporation channel is upper, condensation channel under, when evaporation ends is heated, working medium heat absorption vaporization, effect due to gas differential pressure, Working medium gas selects quickly to transmit heat to condensation end from evaporation channel above, working medium is after condensation end release heat cooling becomes liquid, under the effect of capillary pumping forces, the condensation channel being positioned below it is seeped into by capillary narrow slit, under the capillary force of condensation channel internal channel or the effect of gravity, liquid is back to evaporation ends from condensation channel, so circulation, direction of heat flow in plate-type heat-pipe forms a loop, substantially separating of gas circuit and fluid path is realized, substantially reduce the frictional shearing of vapour phase and liquid interface, improve the heat-transfer capability of plate-type heat-pipe, so move in circles, define the circulation of plate-type heat-pipe flash heat transfer.
As known from the above, the present invention is a kind of plate-type heat-pipe with split tunnel, and its good effect has:
(1) when the major axis of the split tunnel of plate-type heat-pipe of the present invention and plane-parallel or in an acute angle with the angle of horizontal plane time, due to evaporation channel and condensation channel by the reinforcement with capillary narrow slit separately, heat pipe can realize vapor-liquid separation substantially, the frictional shearing of vapour phase and liquid phase motion is greatly reduced, and makes the heat-transfer capability of heat pipe be greatly improved.
(2) owing to often organizing the evaporation channel in split tunnel and condensation channel relative separation when plate-type heat-pipe of the present invention works, flowed up by capillary narrow slit in fire end vapour phase working medium, flowed downward by capillary narrow slit at colling end liquid working substance, hot-fluid forms circulation, the angle making heat pipe axial direction and horizontal plane can become only small or horizontal positioned, is greatly expanded the range of application of plate-type heat-pipe.
(3) owing to the evaporation channel in the plate-type heat-pipe split tunnel of the present invention and condensation channel are interconnected by capillary narrow slit, the hydraulic fluid making inside heat pipe forms dynamic scarce liquid compensating action at fire end, substantially increases heat pipe performance of anti-dry under big heat flow density.
(4) owing to the evaporation channel in split tunnel in plate-type heat-pipe of the present invention is connected by capillary narrow slit with condensation channel, compared with single independent micro heat pipe, be equivalent to add vapor chamber volume and liquid storage cylinder volume, being conducive to the heat transfer of working medium evaporation process and the backflow of liquid, the duty making heat pipe is more stable.
(5) owing to each group split tunnel in plate-type heat-pipe of the present invention is separate, if a certain group of split tunnel is impaired, other split tunnel will not be impacted, and whole heat pipe can be continuing with, and further increases the reliability of plate-type heat-pipe.
(6) owing to the matrix of plate-type heat-pipe of the present invention adopts the method overall processing molding of extruding or punching press so that heat pipe processing is easy, with low cost, greatly reduces the cost of heat pipe.
Accompanying drawing explanation
Fig. 1 is a kind of example structure schematic diagram (arrow is heat flow direction) that the present invention has the plate-type heat-pipe of split tunnel；
Fig. 2 is the A A sectional view of Fig. 1；
Fig. 3 is four kinds of embodiment schematic diagrams of plate-type heat-pipe cross section of the present invention；
Fig. 4 is the application example in plate-type heat-pipe of the present invention with multiple rows of split tunnel；
Fig. 5 is the B B sectional view of Fig. 4；
Fig. 6 is other four kinds of embodiment schematic diagrams of plate-type heat-pipe cross section of the present invention.
In the drawings:
1 evaporation channel, 2 capillary narrow slits, 3 condensation channels,
4,8 sealed end, 5 reinforcements, 6 grooves,
7 matrixes.
Detailed description of the invention
As depicted in figs. 1 and 2, described plate-type heat-pipe split tunnel long axis direction and plane-parallel, and evaporation channel 1 is upper, condensation channel 3 under, evaporation channel 1 and condensation channel 3 are separated by reinforcement 5, and reinforcement 5 has a capillary narrow slit 2, and plate-type heat-pipe matrix 7 adopts the method for global formation to process, by evacuation, perfusion working medium, then sealed end 4 and 8 is sealed.Heat flow direction during the work of described plate-type heat-pipe is as shown in Figure 1, when evaporation ends is heated, working medium heat absorption vaporization, effect due to gas differential pressure, Working medium gas rises to evaporation channel 1 above, quickly transmit heat to the right condensation end, working medium is after condensation end release heat cooling becomes liquid, under the effect of capillary pumping forces, the condensation channel 3 being positioned below it is seeped into by capillary narrow slit 2, under the capillary force of condensation channel 3 internal channel 6 or the effect of gravity, liquid is back to evaporation ends to the left from condensation channel 3, so circulation, direction of heat flow in plate-type heat-pipe forms a loop, achieve separating of gas circuit and fluid path, substantially reduce the frictional shearing of vapour phase and liquid interface, improve the heat-transfer capability of plate-type heat-pipe.So move in circles, define the circulation of plate-type heat-pipe flash heat transfer.
Fig. 3 is the cross sectional representation of four kinds of embodiments of plate-type heat-pipe of the present invention, several various combinations of evaporation channel 1 and condensation channel 3 when listing the big plane of plate-type heat-pipe with plane-parallel, (a) is the rectangular condensate passage 3 of circular evaporation channel 1 and with groove 6；The rectangular condensate passage 3 of b circular evaporation channel that () is with groove 61 and with groove 6；The triangle condensation channel 3 of c circular evaporation channel that () is with groove 61 and with groove 6；The circular condensation channel 3 of d rectangle evaporation channel that () is with groove 61 and with groove 6, different with size according to channel cross-sectional shape and whether internal channel is set, also can there is multiple combination, actual application can select various combination mode as required.
Fig. 4 and Fig. 5 is the schematic diagram of another embodiment of the present invention, and compared with Fig. 1, Fig. 2, Fig. 3, it is multiple rows of that it is distinctive in that split tunnel is set to, and now the heat power of heat pipe and structural strength improve a lot.The split tunnel of Fig. 4 and Fig. 5 has arranged three rows from top to bottom, has six groups of split tunnels in each row, the evaporation channel in each group of split tunnel upper, condensation channel under.
Fig. 6 is the cross sectional representation of the other four kinds of embodiments of plate-type heat-pipe of the present invention, several various combinations of evaporation channel 1 and condensation channel 3 when listing the big plane of plate-type heat-pipe with horizontal plane.
Claims (10)
1. a plate-type heat-pipe with split tunnel, it is characterized in that, this plate-type heat-pipe for arrange a group or more split tunnel in one piece of panel-shaped base body, one group of split tunnel is made up of at least one evaporation channel and at least one condensation channel, separated by reinforcement between evaporation channel and condensation channel, reinforcement has capillary narrow slit vertically from the beginning to the end, capillary narrow slit makes evaporation channel connect with condensation channel, evaporation channel and condensation channel in one group of split tunnel are in same channel lumen, reinforcement is arranged in split tunnel and split tunnel separates into evaporation channel and condensation channel, split tunnel is overall processing molding in panel-shaped base body, the working medium of phase-change heat-exchange effect it has been filled with in passage.
2. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that in described split tunnel, the shape of cross section of evaporation channel or condensation channel is circle, ellipse, triangle, square, rectangle, polygon or abnormity.
3. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, the evaporation channel of described plate-type heat-pipe or condensation channel inwall are light wall or are provided with groove, and groove shape is circle, ellipse, triangle, square, rectangle, trapezoidal, swallow-tail form or Ω shape.
4. having the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that described condensation channel is built-in with capillary wick, capillary wick type is sintering, silk screen or nanometer powder capillary wick.
5. having the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that described split tunnel is made up of micro-shape evaporation channel and condensation channel, and split tunnel is arranged to a row or multi-row, each row is one or more groups.
6. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that when evaporation channel and condensation channel are in upper-lower position in described split tunnel, evaporation channel upper, condensation channel under.
7. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that the processing technique of described plate-type heat-pipe is characterized by adopting the method processing heat pipe matrix of global formation, and the method for global formation is extruding or punch forming.
8. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, described plate-type heat-pipe is sequentially carried out evacuation, perfusion working medium, potting end when making, the mode that opposite heat tube two end sealed end is packaged is welding, splicing, hot pressing or colds pressing.
9. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that described plate-type heat-pipe matrix material is metal or nonmetal or composite.
10. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterised in that the outer surface of described plate-type heat-pipe is added with outer fin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510000131.4A CN104457359B (en) | 2015-01-02 | 2015-01-02 | There is the plate-type heat-pipe of split tunnel |
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| CN201510000131.4A CN104457359B (en) | 2015-01-02 | 2015-01-02 | There is the plate-type heat-pipe of split tunnel |
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| CN104457359A CN104457359A (en) | 2015-03-25 |
| CN104457359B true CN104457359B (en) | 2016-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105318754A (en) * | 2015-12-10 | 2016-02-10 | 兰州理工大学 | Variable-section internal recycle runner type flat-plate gravity heat tube |
| KR102660510B1 (en) * | 2016-11-23 | 2024-04-24 | 삼성전자주식회사 | Electronic Device Including Vapor(two phase) Chamber for Absorbing Heat |
| CN106885484A (en) * | 2017-01-16 | 2017-06-23 | 深圳市迈安热控科技有限公司 | A kind of porous heat pipe |
| CN106989625A (en) * | 2017-01-16 | 2017-07-28 | 深圳市迈安热控科技有限公司 | A kind of porous heat pipe |
| CN108461460B (en) * | 2017-12-15 | 2020-02-21 | 天津津航计算技术研究所 | Two-phase separation microchannel heat sink |
| CN110500896B (en) * | 2019-08-14 | 2021-02-02 | 上海卫星工程研究所 | Two-phase fluid loop condenser tube structure |
| CN111083911B (en) * | 2019-12-23 | 2020-12-29 | 浙江大学 | Composite liquid-cooled heat pipe radiator |
| CN112867359B (en) * | 2021-01-20 | 2023-03-07 | 北京空间机电研究所 | Silicon nitride capillary core rectangular flat plate capillary pump |
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| CN101403578A (en) * | 2008-11-03 | 2009-04-08 | 赵耀华 | Plate-shaped heat pipe and its processing technique |
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| CN201206955Y (en) * | 2008-03-26 | 2009-03-11 | 超众科技股份有限公司 | Heat pipe |
| US20100319882A1 (en) * | 2009-06-17 | 2010-12-23 | Yeh-Chiang Technology Corp. | Ultra-thin heat pipe and manufacturing method thereof |
| CN202889855U (en) * | 2010-01-18 | 2013-04-17 | 日本莫仕股份有限公司 | Heat transporting unit and electronic device |
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Effective date of registration: 20200702 Address after: F302, 3rd floor, pilot building, No.2 Lujing Road, high tech Development Zone, Changsha City, Hunan Province Patentee after: CHANGSHA XINLU ENERGY TECHNOLOGY Co.,Ltd. Address before: 410011, No. 758, Furong garden, 1910 Furong South Road, Tianxin District, Hunan, Changsha Patentee before: Ji Hong |