CN102313472A - Sequentially-unequal equivalent-diameter micro-channel flat-plate type heat pipe - Google Patents
Sequentially-unequal equivalent-diameter micro-channel flat-plate type heat pipe Download PDFInfo
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- CN102313472A CN102313472A CN2010102171069A CN201010217106A CN102313472A CN 102313472 A CN102313472 A CN 102313472A CN 2010102171069 A CN2010102171069 A CN 2010102171069A CN 201010217106 A CN201010217106 A CN 201010217106A CN 102313472 A CN102313472 A CN 102313472A
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Abstract
The invention discloses a sequentially-unequal equivalent-diameter micro-channel flat-plate type heat pipe, wherein by processing continuously-communicated triangular or rectangular micro-channels with sequentially-unequal equivalent diameters and porous media with unequal PPI (Producer Price Index) values on the inner surfaces of an upper plate, a lower plate and a lateral plate, the capillary limit, the boiling limit and the structural strength of the flat-plate heat pipe are markedly improved, and the problem that non-condensed gas is generated due to cleaning and degassing uncleanness when the heat pipe is prepared is more effectively solved. The flat-plate type heat pipe can be used for the heat transfer of electronic components and parts, and has the following beneficial effects that: (1) the capillary limit, the boiling limit and the structural strength of the flat-plate heat pipe are markedly improved; and (2) the problem that the non-condensed gas is generated due to cleaning and degassing uncleanness when the heat pipe is prepared is more effectively solved.
Description
(1) technical field:
The present invention is a kind of flat plate heat tube that is used for heat conduction, can be used to electronic devices and components and conduct heat, and adopts the beneficial effect that can reach behind this flat plate heat tube: (1) has significantly improved capillary limit, the boiling limit and the structural strength of flat-plate heat pipe; (2) comparatively efficiently solve the not concretive gas that cleaning and degasification do not produce only when preparing because of heat pipe.
(2) background technology:
At present; Flat plate heat tube with its can effectively increase heat transfer area with two-dimensional approach, uniform temperature is good, thermal conductivity factor is high, heat transfer is rapid, thermal resistance is little, be easy to be integrated into the advantage of radiating module and receive high praise day by day with multiple radiator, be widely applied on the chip-scale heat dissipation design.The existing various ways of flat plate heat tube is suggested, but is mostly to utilize the two dull and stereotyped confined spaces that form up and down, sintering capillary structure on two dull and stereotyped inwalls, and be that working medium is made flat plate heat tube with water how.Yet; This form can not well improve the Heat Transfer of Heat Pipe on Heat Pipe performance; Can not effectively overcome because of capillary force is not enough, the excessive mummification phenomenon that produces of flow resistance; And improve because of adding heat and surpass critical value and produce the boiling limit that liquid film is directed at the heating surface sintering, and can not effectively solve cleaning and the clean not concretive gas that produces of degasification when preparing because of heat pipe.
(3) summary of the invention:
Therefore,, the present invention proposes a kind of capillary limit that can comparatively significantly improve flat-plate heat pipe, the boiling limit and structural strength, and effectively solve the flat plate heat tube of the not concretive gas that cleaning and degasification do not produce only when preparing because of heat pipe for addressing the above problem.
Micro-channel flat plate formula heat pipe according to a kind of equivalent diameter of the present invention does not wait successively comprises a closure casing, working medium, capillary structure and porous media supporting construction.Closure casing has the space that is welded to form by upper and lower plate and side plate; And process the triangle that communicates continuously that equivalent diameter do not wait successively or the micro-channel of rectangle at upper and lower plate and side plate inner surface; Be beneficial to form formation and the second cosmic velocity that the nucleus of boiling is accelerated bubble; Because of the flow resistance of bubble in the bigger micro-channel of equivalent diameter less than at the less micro-channel resistance of equivalent diameter; Therefore make the not concretive gas that when heat pipe prepares, does not produce only because of cleaning and degasification get rid of through gas vent in using for the first time, this measure also makes the transport path of working medium in capillary structure shorten, and has increased the evaporation/condensation area; Strengthen boiling heat transfer, and rolled up the closed loop; Utilize porous media material to do support column, and so as to reinforcement flat plate heat tube structural strength, and provide capillary force that working medium is refluxed, and can further reduce the thermal resistance of upper and lower plates; The metallurgical mesh formula capillary structure of powder China ink that adopts is with the lower plate sintering; It is capillary structure that upper plate adopts the bigger porous media of PPI value; And be aided with the less porous media support column of PPI value; Form by lower plate capillary structure, vapor chamber, upper plate porous media capillary structure steam channel with this to the upper plate condensing zone; And by upper plate condensing zone, upper plate porous media capillary structure, porous media support column, lower plate capillary structure to the lower plate evaporating area with by the micro-channel of upper plate condensing zone, side plate micro-channel working medium return flow line to the lower plate micro-channel; Form steam channel and the different circulation canal of working medium backflow runner with this; And can make that cleaning is promoted to follow the whole circulation channel cycle by capillary force and steam pressure with the not concretive gas that degasification does not produce only when preparing because of heat pipe, and effectively overcome because of capillary force is not enough, the excessive mummification phenomenon that produces of flow resistance, and raising produces the boiling limit that liquid film is directed at the heating surface sintering because of adding heat above critical value; Working medium can adopt general heat pipe water commonly used, ammonia etc.; The equivalent diameter that upper and lower plate and side plate inner surface process the micro-channel of the triangle that communicates continuously that do not wait successively or rectangle also matches with it, and selects for use the metallurgical mesh structure of lower plate powder China ink, porous media support column and the upper plate porous media that match to strengthen capillary force.Be employed in upper and lower plate and side plate inner surface and process the triangle that communicates continuously or the micro-channel of rectangle and the porous media capillary structure that the PPI value does not wait that equivalent diameter does not wait successively; Be because bubble is littler than the flow resistance of little micro-channel of equivalent diameter and porous media capillary structure from the flow resistance of big micro-channel of equivalent diameter and porous media capillary structure more easily; Otherwise its capillary force to working medium is bigger; The second cosmic velocity of bubble and the back-flow velocity of working medium have been accelerated; Thereby the capillary limit that has improved flat-plate heat pipe effectively and the boiling limit become big flared structure successively and reach effect same thereby the micro-channel among the present invention also can be processed into equivalent diameter.
The micro-channel flat plate formula heat pipe that a kind of equivalent diameter of the present invention does not wait successively is through processing the triangle that communicates continuously or the micro-channel of rectangle and the porous media that the PPI value does not wait that equivalent diameter does not wait successively at upper and lower plate and side plate inner surface; Significantly improve the capillary limit, the boiling limit and the structural strength of flat-plate heat pipe, and also comparatively efficiently solved the not concretive gas that cleaning and degasification do not produce only when preparing because of heat pipe.
For the ease of understanding structure content of the present invention in depth and can reaching beneficial effect, the present invention is done further explain below in conjunction with accompanying drawing and practical implementation.
(4) description of drawings:
Fig. 1 is the cutaway view of flat plate heat tube of the present invention.
Fig. 2 is a porous media support column sketch map of the present invention.
Fig. 3 is the metallurgical mesh formula capillary structure sketch map of lower plate powder China ink of the present invention.
Fig. 4 is a upper plate porous media capillary structure of the present invention.
Fig. 5 is upper plate of the present invention and lower plate front view.
Accompanying drawing sign: the metallurgical mesh formula capillary structure of upper plate 1, side plate 2, lower plate 3, porous media support column 4, upper plate porous media capillary structure 5, lower plate powder China ink 6, thermal source 7, vaporium 8, reserve implementation of port/exhaust outlet 9.
(5) specific embodiment:
In Fig. 1,2; The invention discloses micro-channel flat plate formula heat pipe that a kind of equivalent diameter do not wait successively and comprise that the metallurgical mesh formula capillary structure of upper plate 1, side plate 2, lower plate 3, porous media support column 4, upper plate porous media capillary structure 5, lower plate powder China ink 6, vaporium 8 form; Its forming process is followed successively by: at first moulding upper plate 1 and upper plate porous media capillary structure 5, side plate 2, porous media support column 4, the metallurgical mesh formula capillary structure 6 of lower plate powder China ink, again with lower plate 3 sintering and welding; Upper plate porous media capillary structure 5, porous media support column 4, upper plate 1, side plate 2, lower plate 3, be commaterial,, be beneficial to reduce system's thermal contact resistance and be convenient to sintering and welding such as being copper or aluminium all.
In Fig. 1,2,3,4,5; The invention discloses the micro-channel flat plate formula heat pipe that a kind of equivalent diameter does not wait successively; Comprise by the metallurgical mesh formula capillary structure of upper plate 1, side plate 2, lower plate 3, porous media support column 4, upper plate porous media capillary structure 5, lower plate powder China ink 6, vaporium 8 and working medium and forming; Wherein process equivalent diameter and do not wait the triangle that communicates continuously of (a as shown in Figure 5 is not equal to b) or the micro-channel of rectangle successively at upper plate 1, side plate 2, lower plate 3 inner surfaces; Be beneficial to form the nucleus of boiling and accelerate the formation and the second cosmic velocity of bubble, because of the flow resistance of bubble in the bigger micro-channel of equivalent diameter less than at the less micro-channel resistance of equivalent diameter, in making therefore that the not concretive gas that when heat pipe prepares, does not produce only because of cleaning and degasification is first and using through gas vent 9 eliminatings; This measure also makes the transport path of working medium in capillary structure shorten; And increased the evaporation/condensation area, strengthen boiling heat transfer, and rolled up the closed loop; Porous media support column 4; Can strengthen the flat plate heat tube structural strength, because of the PPI value is bigger than upper plate porous media capillary structure 5, working medium flow therein resistance is also different; Thereby provide enough capillary forces that working medium is refluxed, and can further reduce the thermal resistance of upper and lower plates; Filling working medium can fill through the reservation implementation of port/exhaust outlet 9 on the lower plate 3; The metallurgical mesh formula capillary structure 6 of lower plate powder China ink; And with lower plate 3, porous media support column 4 and upper plate porous media capillary structure 5 sintering; Form by the metallurgical mesh formula capillary structure of lower plate 3 evaporating area micro-channel, lower plate powder China ink 6, vaporium 8, upper plate porous media capillary structure 5 steam channel with this to upper plate 1 condensing zone micro-channel; And by the micro-channel of upper plate 1 condensing zone, upper plate porous media capillary structure 5, porous media support column 4, the metallurgical mesh formula capillary structure 6 of lower plate powder China ink to lower plate 3 evaporating area micro-channel with by the micro-channel of upper plate 1 condensing zone micro-channel, side plate 2 working medium return flow line to lower plate 3 evaporating area micro-channel; Form steam channel and the different circulation canal of working medium backflow runner with this; And can make when preparing cleaning followed the whole circulation channel cycle by capillary force and steam pressure promotion with the not concretive gas that degasification does not produce only because of heat pipe; And effectively overcome because of capillary force is not enough, the excessive mummification phenomenon that produces of flow resistance, and raising produces the boiling limit that liquid film is directed at the heating surface sintering because of adding heat above critical value; Working medium can adopt general heat pipe water commonly used, ammonia etc.; The equivalent diameter that upper and lower plate and side plate inner surface process the micro-channel of the triangle that communicates continuously that do not wait successively or rectangle also matches with it, and selects for use the metallurgical mesh structure of the lower plate powder China ink that matches 6, porous media support column 4 and upper plate porous media capillary structure 5 to strengthen capillary force.Also can be through after whole flat plate heat tube moulding, give the certain heat flow of lower plate 3 of flat plate heat tube, get rid of certain non-condensing gas, property burn-back again through the reservation exhaust outlet 9 of upper plate.
The micro-channel flat plate formula heat pipe that a kind of equivalent diameter does not in sum wait successively; The present invention uses independently diversion mechanism; And constitute between steam channel and working medium return flow line the different structure of resistance between the unequal and micro-channel of flow resistance; Cooperate principles that produced, hot-fluid imbalance, capillarity etc.; Form in-line order folk prescription to fluid circulation loop, and steam channel and working medium return flow line also can the parallel structures of each self-forming multichannel, as long as under the major premise of flow resistance in the working medium return flow line greater than steam channel; Just can produce UNICOM's cyclic loop; Cleaning was promoted to follow the whole circulation channel cycle by capillary force and steam pressure with the not concretive gas that degasification does not produce only when so the present invention made and prepares because of heat pipe, and effectively overcame because of capillary force is not enough, the excessive mummification phenomenon that produces of flow resistance, and raising produces the boiling limit that liquid film is directed at the heating surface sintering because of adding heat above critical value.
The above attaches for the detailed description of preferred embodiment of the present invention and figure; Be not to be used for limiting the present invention; All scopes of the present invention should be as the criterion with patent right book scope required for protection; The embodiment of all and of the present invention design philosophys and similar variation thereof, approximate construction all should be contained among the scope of patent protection of the present invention.
Claims (2)
1. the micro-channel flat plate formula heat pipe that equivalent diameter does not wait successively comprises closure casing, capillary structure and supporting construction, it is characterized in that:
Described closure casing; The Surface Machining that included has upper plate (1), side plate (2) and the lower plate (3) of the micro-channel of triangle that communicates continuously that equivalent diameter do not wait successively or rectangle; Capillary structure comprises porous media support column (4), upper plate porous media capillary structure (5), lower plate powder China ink metallurgical mesh formula capillary structure (6); Porous media support column (4) is as supporting construction; Through process the triangle that communicates continuously that equivalent diameter do not wait successively or the micro-channel of rectangle at upper plate (1), lower plate (3) and side plate (2) inner surface; And the porous media capillary structure (4) and (5) that combine the PPI value not wait; Constitute between steam channel and working medium return flow line the different structure of resistance between the unequal and micro-channel of flow resistance, the principle of that cooperation is produced, hot-fluid imbalance, capillarity etc. forms in-line order folk prescription to fluid circulation loop; And steam channel and working medium return flow line also can the parallel structures of each self-forming multichannel; So make that cleaning is promoted to follow the whole circulation channel cycle by capillary force and steam pressure with the not concretive gas that degasification does not produce only when preparing because of heat pipe, and effectively overcome, and raising produces the boiling limit that liquid film is directed at the heating surface sintering because of adding heat above critical value because of capillary force is not enough, the excessive mummification phenomenon that produces of flow resistance.
2. the micro-channel flat plate formula heat pipe that a kind of equivalent diameter according to claim 1 does not wait successively is characterized in that described flat-plate heat pipe has the micro-channel of the triangle that communicates continuously or rectangle also can be processed into equivalent diameter at upper plate (1), side plate (2), lower plate (3) inner surface and becomes big flared structure successively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102171069A CN102313472A (en) | 2010-07-05 | 2010-07-05 | Sequentially-unequal equivalent-diameter micro-channel flat-plate type heat pipe |
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| CN2010102171069A CN102313472A (en) | 2010-07-05 | 2010-07-05 | Sequentially-unequal equivalent-diameter micro-channel flat-plate type heat pipe |
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| CN102313472A true CN102313472A (en) | 2012-01-11 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927484A (en) * | 2012-11-26 | 2013-02-13 | 殷逢宝 | High-power LED lamp |
| CN103839837A (en) * | 2012-11-27 | 2014-06-04 | 泽鸿(广州)电子科技有限公司 | Method for manufacturing ultra-thin uniform temperature plate and ultra-thin uniform temperature plate manufactured by same |
| CN104735956A (en) * | 2013-12-24 | 2015-06-24 | 东芝家电技术股份有限公司 | Sheet-type heat pipe |
| CN107087374A (en) * | 2017-02-15 | 2017-08-22 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe and its fluid injection method for exhausting |
| CN108005810A (en) * | 2017-12-29 | 2018-05-08 | 天津绿能通汇科技发展有限公司 | The integral heater component of solar energy Stirling engine |
| CN108463094A (en) * | 2017-02-15 | 2018-08-28 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe of setting compensated chamber |
| CN108731525A (en) * | 2017-04-14 | 2018-11-02 | 双鸿科技股份有限公司 | Temperature equalizing plate |
| CN110384414A (en) * | 2018-04-18 | 2019-10-29 | 佛山市顺德区美的电热电器制造有限公司 | Steam valve, cover assembly and cooking apparatus |
| CN110476033A (en) * | 2017-04-28 | 2019-11-19 | 株式会社村田制作所 | Soaking plate |
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2010
- 2010-07-05 CN CN2010102171069A patent/CN102313472A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927484B (en) * | 2012-11-26 | 2013-11-20 | 殷逢宝 | High-power LED lamp |
| CN102927484A (en) * | 2012-11-26 | 2013-02-13 | 殷逢宝 | High-power LED lamp |
| CN103839837B (en) * | 2012-11-27 | 2016-06-22 | 泽鸿(广州)电子科技有限公司 | Ultrathin temperature-uniforming plate manufacture method and the ultrathin temperature-uniforming plate made thereof |
| CN103839837A (en) * | 2012-11-27 | 2014-06-04 | 泽鸿(广州)电子科技有限公司 | Method for manufacturing ultra-thin uniform temperature plate and ultra-thin uniform temperature plate manufactured by same |
| US9854705B2 (en) * | 2013-12-24 | 2017-12-26 | Toshiba Home Technology Corporation | Sheet-type heat pipe |
| CN104735956A (en) * | 2013-12-24 | 2015-06-24 | 东芝家电技术股份有限公司 | Sheet-type heat pipe |
| US20150181764A1 (en) * | 2013-12-24 | 2015-06-25 | Toshiba Home Technology Corporation | Sheet-type heat pipe |
| JP2015121355A (en) * | 2013-12-24 | 2015-07-02 | 東芝ホームテクノ株式会社 | Sheet-type heat pipe |
| CN108444320A (en) * | 2017-02-15 | 2018-08-24 | 山东大学 | A kind of jet chimney width is more than the flat-plate minitype loop circuit heat pipe of fluid pipeline width |
| CN107087374B (en) * | 2017-02-15 | 2018-04-13 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe and its fluid injection method for exhausting |
| CN107087374A (en) * | 2017-02-15 | 2017-08-22 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe and its fluid injection method for exhausting |
| CN108463094A (en) * | 2017-02-15 | 2018-08-28 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe of setting compensated chamber |
| CN108444320B (en) * | 2017-02-15 | 2019-03-29 | 山东大学 | A kind of jet chimney width is greater than the flat-plate minitype loop circuit heat pipe of fluid pipeline width |
| CN108731525A (en) * | 2017-04-14 | 2018-11-02 | 双鸿科技股份有限公司 | Temperature equalizing plate |
| CN110476033A (en) * | 2017-04-28 | 2019-11-19 | 株式会社村田制作所 | Soaking plate |
| CN110476033B (en) * | 2017-04-28 | 2022-05-10 | 株式会社村田制作所 | Vapor chamber |
| CN108005810A (en) * | 2017-12-29 | 2018-05-08 | 天津绿能通汇科技发展有限公司 | The integral heater component of solar energy Stirling engine |
| CN110384414A (en) * | 2018-04-18 | 2019-10-29 | 佛山市顺德区美的电热电器制造有限公司 | Steam valve, cover assembly and cooking apparatus |
| CN110384414B (en) * | 2018-04-18 | 2022-03-29 | 佛山市顺德区美的电热电器制造有限公司 | Steam valve, lid subassembly and cooking utensil |
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Application publication date: 20120111 |