CN104457359A - Plate type heat pipe with separation channels - Google Patents
Plate type heat pipe with separation channels Download PDFInfo
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- CN104457359A CN104457359A CN201510000131.4A CN201510000131A CN104457359A CN 104457359 A CN104457359 A CN 104457359A CN 201510000131 A CN201510000131 A CN 201510000131A CN 104457359 A CN104457359 A CN 104457359A
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- pipe
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- split tunnel
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Abstract
The invention relates to a plate type heat pipe with separation channels. According to the plate type heat pipe, one or more sets of separation channels are arranged in a plate type base body, one set of separation channels is composed of at least one evaporation channel and at least one condensation channel, the evaporation channels and the condensation channels are separated by reinforcing ribs, and capillary narrow clearances are formed in the reinforcing ribs. Working media with the phase-change heat transfer function are poured into the channels, and efficient heat transfer of the heat pipe is achieved. According to the plate type heat pipe, interface friction shear force of a vapor phase and a liquid phase in the work process of the heat pipe can be greatly reduced, and the novel plate type heat pipe has the obvious advantages of being low in heat resistance, high in heat exchange capacity, high in heat exchange efficiency, large in inclination range and the like, and is light, simple in structure, high in loading capacity, simple in manufacturing process, efficient, practical and low in cost.
Description
Technical field
The present invention relates to phase-change heat transfer and technical field of heat exchange, particularly a kind of plate-type heat-pipe with split tunnel.
Background technology
In recent years, plate-type heat-pipe is high due to heat exchange property, is convenient at larger area uniformly transfer heat, and be 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 large quantifier elimination.Due to the reverse high-speed motion in same small passage of vehicle repair major in the plate-type heat-pipe course of work, produce very large liquid-vaqor interface frictional shearing, heat transfer resistance is increased greatly, the heat-transfer capability of restriction heat pipe.In addition, existing plate-type heat-pipe manufacturing process is comparatively complicated, and manufacturing cost is high, becomes the bottleneck that it is applied.How to adopt efficient technological method for processing to manufacture a kind of heat pipe that the liquid and vapor capacity in the heat pipe course of work can be separated, reduce or eliminate liquid-vaqor interface frictional shearing, improve heat-transfer capability, become the focus of industry research.
Summary of the invention
The object of the invention is: the technical barriers such as, thermal resistance large for plate-type heat-pipe vapour-liquid frictional resistance is large, processed complex, 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 reduce the thermal resistance of heat pipe, improve heat-transfer capability, and have lightweight, structure is simple, bearing capacity is strong, the advantage such as of many uses, easy for installation, the performance of plate-type heat-pipe is significantly improved, and considerably increases its range of application.
Technical scheme of the present invention is, 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 organizing split tunnel can be separate, or two ends UNICOM, has been filled with the working medium of phase-change heat-exchange effect in passage.
Below 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 can be arranged 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 be 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 technology feature of described plate-type heat-pipe is the method processing heat pipe matrix adopting global formation, and the method for global formation is extruding or punch forming.
Described plate-type heat-pipe carries out vacuumizing, pouring into working medium, potting end when making successively, and the mode that opposite heat tube two end sealed end carries out encapsulating is welding, glued joint, hot pressing or cold 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.
Described split tunnel has been filled with the working medium of phase-change heat-exchange effect after vacuumizing, and forms heat pipe, and often organize split tunnel and comprise evaporation channel and condensation channel, 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 also can 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 become arbitrary angle.
The sealing of the access port of described its inside of plate-type heat-pipe adopts welding (comprise and dissolve weldering, solid-state welding, friction stir welding, 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 greater 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, due to the effect of gas differential pressure, Working medium gas selects the evaporation channel from being positioned at top to transmit heat to condensation end fast, working medium is after the cooling of condensation end release heat becomes liquid, under the effect of capillary pumping forces, the condensation channel being positioned at below 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, circulation like this, direction of heat flow in plate-type heat-pipe forms a loop, substantially being separated 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, because evaporation channel and condensation channel are separated by the reinforcement with capillary narrow slit, heat pipe can realize vapor-liquid separation substantially, the frictional shearing of vapour phase and liquid phase motion reduces greatly, and the heat-transfer capability of heat pipe is improved greatly.
(2) owing to often organizing evaporation channel in split tunnel and condensation channel relative separation during plate-type heat-pipe of the present invention work, upwards flowed 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, make the angle of heat pipe axial direction and horizontal plane can become very little or horizontal positioned, greatly extend the range of application of plate-type heat-pipe.
(3) because the evaporation channel in plate-type heat-pipe split tunnel of the present invention and condensation channel are interconnected by capillary narrow slit, make the hydraulic fluid of inside heat pipe at the scarce liquid compensating action of fire end formative dynamics, substantially increase the performance of heat pipe anti-dry under large heat flow density.
(4) because the evaporation channel in split tunnel in plate-type heat-pipe of the present invention is communicated with 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, be conducive to the heat transfer of working medium evaporation process and the backflow of liquid, make the duty of heat pipe more stable.
(5) because each group of 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 can not be influenced, and whole heat pipe can continue to use, and further increases the reliability of plate-type heat-pipe.
(6) because the matrix of plate-type heat-pipe of the present invention adopts the method overall processing of extruding or punching press shaping, heat pipe is processed easy, with low cost, greatly reduce 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 A-A sectional view of Fig. 1;
Fig. 3 is four kinds of embodiment schematic diagrames 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 many row's split tunnels;
Fig. 5 is B-B sectional view of Fig. 4;
Fig. 6 is other four kinds of embodiment schematic diagrames of plate-type heat-pipe cross section of the present invention.
In the drawings:
1-evaporation channel, 2-capillary narrow slit, 3-condensation channel,
4,8-sealed end, 5-reinforcement, 6-groove,
7-matrix.
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, plate-type heat-pipe matrix 7 adopts the method for global formation to process, by vacuumizing, pouring into working medium, then sealed end 4 and 8 is sealed.Heat flow direction during described plate-type heat-pipe work as shown in Figure 1, when evaporation ends is heated, working medium heat absorption vaporization, due to the effect of gas differential pressure, Working medium gas rises to the evaporation channel 1 being positioned at top, transmit heat to condensation end to the right fast, working medium is after the cooling of condensation end release heat becomes liquid, under the effect of capillary pumping forces, the condensation channel 3 being positioned at below 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 left from condensation channel 3, circulation like this, direction of heat flow in plate-type heat-pipe forms a loop, achieve being separated 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 plate-type heat-pipe of the present invention four kinds of embodiments, several various combinations of evaporation channel 1 and condensation channel 3 when listing the large plane of plate-type heat-pipe and plane-parallel, (a) is circular evaporation channel 1 and the rectangular condensate passage 3 of with groove 6; B circular evaporation channel 1 that () is with groove 6 and the rectangular condensate passage 3 of with groove 6; C circular evaporation channel 1 that () is with groove 6 and the triangle condensation channel 3 of 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 and whether internal channel is set according to channel cross-sectional shape, also can there is multiple combination, various combination mode can be selected as required in actual application.
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, its difference is that split tunnel is set to many rows, 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 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 large plane of plate-type heat-pipe and horizontal plane.
Claims (10)
1. one kind has the plate-type heat-pipe of 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, in passage, be filled with the working medium of phase-change heat-exchange effect.
2. have the plate-type heat-pipe of split tunnel according to claim 1, it is characterized 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 can be circle, ellipse, triangle, square, rectangle, trapezoidal, swallow-tail form or Ω shape.
4. have the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, can be equipped with capillary wick in described condensation channel, capillary wick type can be sintering, silk screen or nanometer powder capillary wick.
5. have the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, described split tunnel is made up of micro-shape evaporation channel and condensation channel, and split tunnel can be arranged to a row or multi-row, and each row is one or more groups.
6. there is the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, when in described split tunnel, evaporation channel and condensation channel are in upper-lower position, evaporation channel upper, condensation channel under.
7. have the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, the processing technology feature of described plate-type heat-pipe is the method processing heat pipe matrix adopting 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 carries out vacuumizing, pouring into working medium, potting end when making successively, and the mode that opposite heat tube two end sealed end carries out encapsulating is welding, glued joint, hot pressing or cold pressing.
9. have the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, described plate-type heat-pipe matrix material is metal or nonmetal or composite.
10. have the plate-type heat-pipe of split tunnel according to claim 1, it is characterized in that, the outer surface of described plate-type heat-pipe is added with outer fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000131.4A CN104457359B (en) | 2015-01-02 | 2015-01-02 | There is the plate-type heat-pipe of split tunnel |
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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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| CN104457359A true CN104457359A (en) | 2015-03-25 |
| CN104457359B CN104457359B (en) | 2016-06-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108093604A (en) * | 2016-11-23 | 2018-05-29 | 三星电子株式会社 | Steam including being used to absorb heat（Two-phase）The electronic device of chamber |
| CN108461460A (en) * | 2017-12-15 | 2018-08-28 | 天津津航计算技术研究所 | A kind of two-phase laminated flow micro-channel heat sink |
| CN110500896A (en) * | 2019-08-14 | 2019-11-26 | 上海卫星工程研究所 | Two-phase fluid circuit condenser tube structure |
| CN111083911A (en) * | 2019-12-23 | 2020-04-28 | 浙江大学 | Composite liquid-cooled heat pipe radiator |
| CN112867359A (en) * | 2021-01-20 | 2021-05-28 | 北京空间机电研究所 | Silicon nitride capillary core rectangular flat plate capillary pump |
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Cited By (12)
| 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 |
| CN108093604A (en) * | 2016-11-23 | 2018-05-29 | 三星电子株式会社 | Steam including being used to absorb heat（Two-phase）The electronic device of chamber |
| 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 |
| CN108461460A (en) * | 2017-12-15 | 2018-08-28 | 天津津航计算技术研究所 | A kind of two-phase laminated flow micro-channel heat sink |
| 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 |
| CN110500896A (en) * | 2019-08-14 | 2019-11-26 | 上海卫星工程研究所 | Two-phase fluid circuit condenser tube structure |
| CN110500896B (en) * | 2019-08-14 | 2021-02-02 | 上海卫星工程研究所 | Two-phase fluid loop condenser tube structure |
| CN111083911A (en) * | 2019-12-23 | 2020-04-28 | 浙江大学 | Composite liquid-cooled heat pipe radiator |
| CN111083911B (en) * | 2019-12-23 | 2020-12-29 | 浙江大学 | Composite liquid-cooled heat pipe radiator |
| CN112867359A (en) * | 2021-01-20 | 2021-05-28 | 北京空间机电研究所 | Silicon nitride capillary core rectangular flat plate capillary pump |
| 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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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 |
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