CN102135385B - Plate type heat pipe with minitype circular channels - Google Patents
Plate type heat pipe with minitype circular channels Download PDFInfo
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- CN102135385B CN102135385B CN201010583300A CN201010583300A CN102135385B CN 102135385 B CN102135385 B CN 102135385B CN 201010583300 A CN201010583300 A CN 201010583300A CN 201010583300 A CN201010583300 A CN 201010583300A CN 102135385 B CN102135385 B CN 102135385B
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Abstract
The invention relates to a plate type heat pipe with minitype circular channels. The interior of the plate type heat pipe is composed of a group or more than one group of minitype circular channels, wherein each circular channel comprises main channels and a connecting channel which is communicated with two ends of the main channels; the main channels are respectively an evaporation channel and a backflow channel; the connecting channel is respectively a liquid storage chamber and an evaporation chamber; the channels are filled with working media which play a role in phase change and heat transfer at a certain ratio, so that the efficient heat transfer of the heat pipe is realized; and welding, cold compression, hot compression or cementing are adopted for the sealing at each channel opening. The plate type heat pipe provided by the invention has the advantages of low heat resistance, high heat exchange efficiency, light weight, simple structure, high bearing capability and wide application, and ensures that the interface friction shearing force of vapor phase and liquid phase in the channels can be reduced maximally, thus being an efficient and practical novel heat pipe.
Description
Technical field
The present invention relates to phase-change heat transfer and heat transfer technology field, particularly a kind of plate-type heat-pipe with miniature annular channel.
Background technology
Heat pipe is a kind of a kind of high-efficiency heat conduction body that in the thermal evaporation of evaporation ends chance heat is passed to fast condensation end through the working medium in the closed container.In recent years, heat pipe is because its heat exchange property efficiently, receives People more and more in fields such as the heat exchange of aerospace heat exchange, microelectronic heat radiation, solar energy, recuperations of heat and pays close attention to widely, and the research worker has carried out a large amount of research to various heat pipes.
The conventional heat pipe technology is comparatively ripe, be used widely, but its inside will add capillary wick, and the structure more complicated is made cumbersomely, and volume is bigger, has limited its application.Single microminiature heat pipe though need not add capillary wick, has been realized miniaturization, and single heat transfer power is restricted.
For the ease of the larger area uniformly transfer heat; Someone has studied and has developed the flat-plate heat pipe that independent, the parallel micro-channel of cluster forms micro heat pipe bunch and has microflute low-grade fever nest of tubes on the solid substrate, this type flat-plate heat pipe have heat output big, with thermal source and heat sink contact area greatly and advantage such as easy for installation.But this type heat pipe generally require evaporation ends down, condensation end is last, its operation principle is that working medium is met thermal evaporation at evaporation ends heat is upwards passed to condensation end, leans on the capillarity of microflute in the passage and the effect of gravity to reflux at the liquid of condensation end heat radiation back condensation; Realize heat conduction; Vapour-liquid two this moment reverse high-speed motion in same small passage produces very big liquid-vaqor interface fricting shearing power, and it can hinder the backflow of condensation end liquid; Heat transfer resistance is increased greatly; Restricted heat exchange efficiency, when heat flow is excessive even can micro heat pipe be burnt out, this situation all is the bottleneck that the tabular micro heat pipe of restriction bunch combination property further improves all the time.
Summary of the invention
The object of the invention is: the deficiency that is directed against prior aries such as aforesaid existing plate-type heat-pipe vapour-liquid frictional resistance is big, thermal resistance is big; A kind of plate-type heat-pipe with miniature annular channel is provided; Can reduce the interface friction shearing force of vapour phase in the passage or liquid phase to greatest extent, have that thermal resistance is low, heat exchange efficiency is high, and in light weight, simple in structure, bearing capacity is strong, advantage such as of many uses and easy for installation; Make the performance of plate-type heat-pipe that great raising arranged, and enlarge its range of application greatly.
Technical scheme of the present invention is, said plate-type heat-pipe with miniature annular channel is characterized in that, this plate-type heat-pipe does, little shape annular channel of a group or more sealing is set in a matrix, has been filled with the working medium of phase-change heat-exchange effect in the passage.
Below the present invention made further specify.
Said matrix external form is Any shape such as cuboid, square, cylinder, polyhedron, spheroid, and miniature annular channel wherein has been filled with the phase-change heat-exchange effect after vacuumizing working medium forms micro heat pipe.
Said every group of miniature annular channel comprises plural main channel and is communicated with the interface channel at two ends, main channel respectively, and the main channel is for being arranged in parallel or non-parallel arrangement.
Said miniature annular channel is meant the annular channel of in panel-shaped base body, processing, and its size belongs to the scope of micro heat pipe.
Said miniature annular channel has been filled with the working medium of phase-change heat-exchange effect after vacuumizing, form micro heat pipe, and the main channel of every group of miniature annular channel is respectively evaporation channel and return flow line, and in general, the capillarity of return flow line is stronger.
Among the present invention, the cross-sectional area of one group of described evaporation channel of little shape annular channel and return flow line and be shaped as one of following four kinds of situation:
(1) shape of cross section of evaporation channel and return flow line is identical, and cross-sectional area is different;
(2) cross-sectional area of evaporation channel and return flow line is identical, and shape of cross section is different;
(3) cross-sectional area of evaporation channel and return flow line is different, and shape of cross section is different;
(4) cross-sectional area of evaporation channel and return flow line is identical, and shape of cross section is identical.
Said miniature annular channel is separate, can be arranged to a row or many rows, and each row is one or more groups miniature annular channel.
The shape of cross section of said main channel is circle, ellipse, triangle, square, rectangle, polygon or abnormity.
Among the present invention, can be as required, wall is provided with little fin in the main channel.
The plane that each bar limit of said miniature annular channel is formed is vertical with the larger-size surface of plate-type heat-pipe, or parallel with the larger-size surface of plate-type heat-pipe, perhaps becomes arbitrary angle with the larger-size surface of plate-type heat-pipe.
When the plane that each bar limit of the miniature annular channel of said plate-type heat-pipe is formed was perpendicular to the ground, evaporation channel was last, and the return flow line is following.
The main channel of every group of miniature annular channel is set to two or more.
Said plate-type heat-pipe with miniature annular channel adopts metal or nonmetal or composite is monolithic extruded or punch forming, or adopts other technology each several part to be spliced.
Methods such as said sealing with its interior miniature annular channel port partly of plate-type heat-pipe of miniature annular channel is adopted and welded (comprise and dissolve weldering, solid-state welding, friction stir welding, soldering, cold welding, thermocompression bonding etc.), glueds joint, colds pressing, hot pressing are sealed, and realize the efficient heat transfer of heat pipe.
The present invention is provided with evaporation channel and return flow line in each miniature annular channel of plate-type heat-pipe; And make the capillarity of one of them passage stronger; The main channel that capillarity is stronger is mainly used in liquid and refluxes; Be referred to as return flow line or condensation channel, another main channel is mainly used in steam raising, is referred to as evaporation channel.Plate-type heat-pipe operation principle of the present invention is, when evaporation ends is heated, because the effect of gas differential pressure; Gas is selected to move to condensation end from evaporation channel, and working medium is after condensation end is cooled to liquid, because capillarity or add the effect of gravity; Liquid selective moves to evaporation ends from condensation channel; Basic realization gas circuit is separated with the liquid road, has reduced the fricting shearing power of vapour phase and liquid interface greatly, improves the heat transfer efficiency of plate-type heat-pipe.So move in circles, working medium has formed the circulation of flash heat transfer.
Known that by above the present invention is a kind of plate-type heat-pipe with miniature annular channel, its good effect has:
(1) owing to is provided with evaporation channel and return flow line in the annular channel of plate-type heat-pipe of the present invention; And the capillarity of return flow line is stronger; Can realize vapor-liquid separation basically when making the heat pipe steady operation; The fricting shearing power of vapour phase and liquid phase motion reduces greatly, and the Heat Transfer of Heat Pipe on Heat Pipe ability is improved greatly;
(2) because steam channel and return flow line in the annular channel in the plate-type heat-pipe of the present invention are interconnected, make the hydraulic fluid of inside heat pipe form the dynamic liquid compensating action that lacks, improved the anti-dry performance of heat pipe under big heat flow density greatly at fire end;
(3) because the little shape annular channel two ends in the plate-type heat-pipe of the present invention respectively are provided with communication passage; Compare with single independent micro heat pipe; Be equivalent to increase vapor chamber volume and liquid storage cylinder volume, help the heat transfer of working medium evaporation process and the backflow of liquid, make the duty of heat pipe more stable.
(4) because the little shape annular channel in the plate-type heat-pipe of the present invention is separate; Only adjacent steam channel and return flow line are communicated with; With other not on the same group miniature annular channel then be what to separate, if a certain annular channel is impaired, other annular channel can be not influenced; Whole heat pipe can continue to use, and further improved the reliability of plate-type heat-pipe.
Description of drawings
Fig. 1 is a kind of example structure sketch map of miniature annular channel of the present invention (arrow is the heat flow direction);
Fig. 2 be among Fig. 1 A-A to view;
Fig. 3 is the embodiment sketch map of the main channel different cross section of the miniature annular channel of the present invention; Wherein (a) is that cross section, two main channels is respectively squares and triangles; (b) being that cross section, two main channels is respectively circle and triangle, (c) is that cross section, two main channels all is rectangle (being provided with little fin in the backflow main channel); Each two main channel of organizing miniature annular channel is arranged above and below;
Fig. 4 is the sketch map of another embodiment of the present invention, and miniature annular channel has been arranged three rows from top to bottom; Among each row six groups of miniature annular channels are arranged, each two main channel of organizing miniature annular channel is arranged above and below;
Fig. 5 be among Fig. 4 B-B to structure;
Fig. 6 is the sketch map of yet another embodiment of the invention, and each is organized about two main channels of miniature annular channel and arranges;
Fig. 7 be among Fig. 6 C-C to structure;
In the drawings:
The 1-matrix, the 2-evaporation channel, the 3-return flow line,
The 4-liquid storage cylinder, the 5-vapor chamber, 6, the 7-seal,
The little fin of 8-.
The specific embodiment
As shown in Figure 1, when said plate-type heat-pipe was vertically placed (be main channel in position perpendicular to the ground or wide-angle work), vapor chamber 5 was last; Liquid storage cylinder 4 is following, and evaporator section absorbs heat, and the liquid refrigerants that play the phase-change heat-exchange effect in the liquid storage cylinder 4 receive thermal evaporation; Steam is under the effect of pressure reduction; Select to move to condensation end through evaporation channel 2, the high-speed transfer heat, heat exchange was condensed into liquid after steam arrived condensation end; Because the capillary force of return flow line 3 is much larger than evaporation channel 2, liquid working substance basically in the return flow line 3 capillary forces and gravity effect refluxed to liquid storage cylinder 4; When evaporation channel 2 is on-circular cross-section, also having a small amount of working medium refluxes through evaporation channel; After in case micro heat pipe conducts heat and stablizes; Counterclockwise tractive force of the inner formation of circulation canal, steam can rise through evaporation channel 2, and working medium can be selected 3 backflows from the return flow line; Can form stable dynamic circulation this moment, realizes vapor-liquid separation.When said plate-type heat-pipe horizontal positioned (being position shown in Figure 1 or low-angle work), its operation principle and last similar.
Fig. 3 is a main channel of the present invention different cross section shape embodiment sketch map, and at this moment can there be multiple combination the main channel, (a) is rectangle evaporation channel 2 and triangle return flow line 3; (b) be circular evaporation channel 2 and triangle return flow line 3; (c) be circular evaporation channel 2 and rectangle return flow line 3 with little fin 8; Different and whether little fin is set according to the channel cross-section shape and size, also multiple combination can be arranged, in actual application, can select the various combination mode as required.
Fig. 4 is the sketch map of another embodiment of the present invention, compares with Fig. 1, Fig. 3, and its difference is that annular channel is set to many rows, and this moment, Heat Transfer of Heat Pipe on Heat Pipe power and structural strength improved a lot.
Fig. 6 is the sketch map of another embodiment of the present invention.The plane that this moment, the annular channel four edges was formed is parallel with the maximum planes of plate-type heat-pipe; This heat pipe thickness of slab is thinner, simple in structure, is easy to processing; When vertically placing; Its operation principle and performance and heat pipe shown in Figure 1 are basic identical, but when small inclination is placed, and heat-transfer effect structure not as shown in Figure 1 is desirable.
Claims (4)
1. the plate-type heat-pipe with miniature annular channel is characterized in that, this plate-type heat-pipe does, little shape annular channel of a group or more sealing is set in a matrix, has been filled with the working medium of phase-change heat-exchange effect in the passage; Every group of miniature annular channel comprises two or more main channels and is communicated with the interface channel at two ends, main channel respectively, and the main channel is made up of evaporation channel and return flow line, and the capillarity of return flow line is stronger, and the main channel is for being arranged in parallel or non-parallel arrangement.
2. according to the said plate-type heat-pipe with miniature annular channel of claim 1, it is characterized in that said miniature annular channel is arranged to a row or many rows, each row is one or more groups miniature annular channel.
3. according to the said plate-type heat-pipe with miniature annular channel of claim 1, it is characterized in that when the evaporation channel of the miniature annular channel of said plate-type heat-pipe and return flow line were in upper-lower position, evaporation channel was last, the return flow line is following.
4. the plate-type heat-pipe with miniature annular channel according to claim 1 is characterized in that, adopts metal or nonmetal or composite is monolithic extruded or punch forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010583300A CN102135385B (en) | 2010-12-13 | 2010-12-13 | Plate type heat pipe with minitype circular channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010583300A CN102135385B (en) | 2010-12-13 | 2010-12-13 | Plate type heat pipe with minitype circular channels |
Publications (2)
| Publication Number | Publication Date |
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| CN102135385A CN102135385A (en) | 2011-07-27 |
| CN102135385B true CN102135385B (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010583300A Active CN102135385B (en) | 2010-12-13 | 2010-12-13 | Plate type heat pipe with minitype circular channels |
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| CN (1) | CN102135385B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6121854B2 (en) * | 2013-09-18 | 2017-04-26 | 東芝ホームテクノ株式会社 | Sheet-type heat pipe or personal digital assistant |
| CN104812206A (en) * | 2014-01-27 | 2015-07-29 | 王敬敦 | Self-operated circulation type uniform temperature cooling device |
| CN104006685A (en) * | 2014-05-06 | 2014-08-27 | 新疆太阳能科技开发公司 | Multi-array planar heat tube |
| CN104457360B (en) * | 2015-01-02 | 2016-11-09 | 季弘 | Plate heat pipe with capillary slits |
| CN104457359B (en) * | 2015-01-02 | 2016-06-29 | 季弘 | There is the plate-type heat-pipe of split tunnel |
| 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 |
| CN108662932A (en) * | 2017-03-29 | 2018-10-16 | 深圳市迈安热控科技有限公司 | Cyclic annular porous heat pipe and heat-exchange device |
| CN108323099B (en) * | 2018-01-16 | 2024-03-29 | 南昌大学 | Fin type heat pipe coupling radiator |
Citations (4)
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|---|---|---|---|---|
| CN1403777A (en) * | 2001-09-06 | 2003-03-19 | 李嘉豪 | Flat-plate loop heat pipe (1) |
| JP2006344636A (en) * | 2005-06-07 | 2006-12-21 | Fuji Electric Holdings Co Ltd | Parallel loop type heat dispersion plate |
| CN101493296A (en) * | 2009-02-27 | 2009-07-29 | 赵耀华 | Novel flat-plate heat pipe with stratose microflute subfebrile temperature tube group |
| CN101522013A (en) * | 2008-02-28 | 2009-09-02 | 株式会社东芝 | Electronic device, loop heat pipe and cooling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07198278A (en) * | 1993-12-30 | 1995-08-01 | Tohoku Electric Power Co Inc | Rod loop heat pipe |
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2010
- 2010-12-13 CN CN201010583300A patent/CN102135385B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403777A (en) * | 2001-09-06 | 2003-03-19 | 李嘉豪 | Flat-plate loop heat pipe (1) |
| JP2006344636A (en) * | 2005-06-07 | 2006-12-21 | Fuji Electric Holdings Co Ltd | Parallel loop type heat dispersion plate |
| CN101522013A (en) * | 2008-02-28 | 2009-09-02 | 株式会社东芝 | Electronic device, loop heat pipe and cooling device |
| CN101493296A (en) * | 2009-02-27 | 2009-07-29 | 赵耀华 | Novel flat-plate heat pipe with stratose microflute subfebrile temperature tube group |
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| CN102135385A (en) | 2011-07-27 |
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