CN102927840A - Composite heat pipe comprising fin and method for manufacturing same - Google Patents
Composite heat pipe comprising fin and method for manufacturing same Download PDFInfo
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- CN102927840A CN102927840A CN2012104025117A CN201210402511A CN102927840A CN 102927840 A CN102927840 A CN 102927840A CN 2012104025117 A CN2012104025117 A CN 2012104025117A CN 201210402511 A CN201210402511 A CN 201210402511A CN 102927840 A CN102927840 A CN 102927840A
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Abstract
The invention discloses a composite heat pipe comprising a fin and a method for manufacturing the composite heat pipe. The composite heat pipe comprises a metal tube (2), wherein a metal sheet (1) is pressed on the metal tube (2) to form the fin; and the fin is provided with a coating. The method for manufacturing the composite heat pipe comprises the following steps of: 1) pressing the metal tube (2) and the metal sheet (1) through mechanical force to ensure that the metal tube (2) is flattened, and the metal tube (2) and the metal sheet (1) are pressed together to form a composite sheet material; 2) preparing the coating on the surface of the composite sheet material; 3) introducing high-pressure air into the flattened metal tube to ensure that the flattened metal tube becomes round; and 4) sealing a throat at one end of the metal tube, and vacuumizing the other end of the metal tube and filling a working medium into the other end of the metal tube and then sealing to obtain the composite heat pipe comprising the fin with the coating, wherein the coating is one of selective absorbing coatings TiON, Al-N-Al, black nickel or black chromium, or one of high-heat-dissipation nano coatings Cu, Al, Ag, Ti or nano materials of carbon. The composite heat pipe can be used for collecting heat or dissipating the heat according to different coatings.
Description
Technical field
The present invention relates to heat collector tube heat dissipation technology field, especially relate to a kind of finned composite heat pipe and preparation method thereof.
Technical background
Heat pipe is to realize that heat transmits fast and the ideal chose of exchange.Heat pipe is realized High Efficiency Thermal conduction, exchange by phase transformation, utilizes the evaporation of airtight cavity internal working medium, condensation phase transformation to carry out the heat transmission, and its heat-transfer capability is that tens of traditional metal materials arrives hundreds of times.
Hot pipe technique is applied in solar energy heating technical, obtains heat pipe type solar heat collection pipe.This thermal-collecting tube generally is to be welded with the heat pipe of coating for selective absorption fin as heat-absorbing plate core, this coating for selective absorption can absorb sunshine to greatest extent, then be converted into heat energy, and minimizing thermal radiation loss that can be as far as possible little, so collecting efficiency is very high.The plate core of this heat pipe type solar heat collection pipe is generally through following steps preparations: 1) make first copper heat pipe, 2) weld together with the copper heat pipe with the fin of coating for selective absorption and obtain heat-absorbing plate core.There are two problems in this plate core, and the one, mainly with the method welding of manually-operated ultrasonic bonder, the process of material loading blanking is wasted a lot of times, has restricted the raising of production efficiency in the welding of heat pipe and fin; The 2nd, used heat pipe is generally the copper heat pipe, and cost compare is high.
In addition, for radiation type heat pipe, at present commonly used is by welding fin around heat pipe, increase area of dissipation, but this method is very limited for the increase of area of dissipation.
Patent and the document announced are retrieved, do not adopted the report of the method making heat pipe of " pressing → deposition special coating → propel the price of fourth contact → vacuumize and fill with liquid ".
Summary of the invention
The invention discloses a kind of finned composite heat pipe and preparation method thereof.
The present invention is directed to the problem that solar heat tubular type vacuum heat collection pipe plate core prior art exists, the creationary method that has proposed new making compound thermal tube sheet core, namely, the method of " pressing → deposition special coating → propel the price of fourth contact → vacuumize and fill with liquid ", this method compares 1 with existing technology) adopt the method for mechanical pressing that metal tube and sheet metal are pressed together, obtain composite pipe, the way of this pressing can be produced continuously, has improved production efficiency; 2) composite pipe that obtains of pressing can be reeled, for follow-up successive sedimentation coating for selective absorption has been created condition, and this method deposited coatings, not only sedimentation rate is fast, and the uniformity of coating also increases; 3) need not weld, reduce the destruction of process to product, the contact area of fin and metal tube is conducive to improve heat-transfer effect greater than welding method; When the metal tube that 4) adopts was copper pipe or titanium pipe, because copper pipe or titanium pipe are by the sheet metal double team together, that therefore copper pipe or titanium pipe can be done was very thin, has reduced cost, and when metal tube was aluminum pipe, iron pipe and stainless steel tube, cost advantage was more obvious; 5) compare by the way of around heat pipe, welding fin increase area of dissipation with traditional heat-dissipating type heat pipe, the present invention is by making the nano coating of high-cooling property at fin, utilize the characteristics of nano material high-specific surface area, greatly increased area of dissipation, improve radiating effect.
Composite heat pipe of the present invention comprises metal tube (2), and sheet metal (1) is pressed together on upper fin, the coating on the fin of forming of metal tube (2).
Described sheet metal (1) can be one deck, also can be two-layer, when sheet metal (1) is two-layer with the centre of metal tube (2) double team in double layer of metal sheet (1).
Described metal tube (2) can be selected from any in aluminum pipe, copper pipe, iron pipe, stainless steel tube, the titanium pipe; Described sheet metal (1) can be selected from any in aluminium flake, copper sheet, the stainless steel substrates.
Described coating can be any of coating for selective absorption TiON, Al-N-Al, black nickel, black chromium, aluminium oxide, also can be any in the nano material of high-cooling property nano coating Cu, Al, Ag, Ti and carbon.
The present invention also provides the preparation method of above-mentioned composite heat pipe.Step is as follows:
1. metal tube (2) and sheet metal (1) pressing: metal tube (2) and sheet metal (1) are carried out pressing by mechanical force, and metal tube (2) is crushed also and sheet metal (1) presses together, and obtains composite sheet;
Metal tube (2) and sheet metal (1) carry out pressing by pressing machine, the position of metal tube (2) is positioned at the center of sheet metal (1), after the pressing, metal tube (2) is crushed, and and sheet metal (1) in conjunction with very firm, contact area is also much bigger than laser weld, and this is conducive to heat transfer.Sheet metal (1) can be one deck, also can be two-layer, when sheet metal (1) is two-layer with the centre of metal tube (2) double team in double layer of metal sheet (1).When scope at 500KN ~ 10000KN of the pressure of pressing, can guarantee above-mentioned any pipe and sheet metal are carried out good pressing.The composite sheet that pressing is good can be reeled, and is convenient to carrying and subsequent deposition special coating, also can be without coiling Direct precipitation coating.
2. make coating on the good composite sheet surface of pressing;
The making of coating for selective absorption: the composite sheet that obtains in step 1 deposits coating for selective absorption.This coating for selective absorption can obtain by simple spraying, if sheet metal is aluminium, can also directly obtain by anodised method, can also obtain coating for selective absorption by the method for metal surface black chromium plating, black nickel in addition.If think further to improve the performance of coating for selective absorption, preferably make of the method for physical vapour deposition (PVD), generally adopt method sputtered with Ti ON or the Al-N-Al of magnetron sputtering.
The making of high radiation nano coating: the method by spraying on the composite sheet that obtains in step 1 just can deposit high radiation nano coating.
3. in the metal tube that flattens, lead to gases at high pressure, make metal tube (2) fourth contact;
On the basis of step 2, by in the metal tube that flattens, passing into gases at high pressure metal tube is blown circle, for becoming heat pipe, following process prepares.
Described compression pressure scope is preferably 2 ~ 30 atmospheric pressure.
4. the making of heat pipe
As required, the product that step 3 is obtained is cut into suitable length, and then an end carries out the reducing welded seal.Vacuumize, fill with liquid, encapsulation in other end reducing, obtain complete heat pipe.
The pressure limit that vacuumizes is preferably 10
-2Pa ~ 10
-6Between the Pa.The working medium of can be the mixing of any in water, ethanol, methyl alcohol, liquefied ammonia, acetone, hexane and the toluene or two kinds.
What need to further specify is, the inventive method is made finned composite heat pipe, not only production efficiency is high, and low price, take band (sheet metal) as aluminium, the situation when metal tube is copper is example, the heat pipe that this method is made, the thickness of copper pipe can accomplish that about 1/10 ~ 1/2 of ordinary copper heat pipe wall thickness just can satisfy the requirement that vacuumizes, and therefore can greatly save cost.And the existence of coating so that the thermal-arrest of heat pipe or heat dispersion greatly improve.This composite heat pipe both can be used for thermal-arrest according to the difference of coating, can be used for again dispelling the heat.When coating is coating for selective absorption, can be used in the solar energy optical-thermal field, coating absorbs sunshine to greatest extent, and is translated into heat, collects by heat pipe.And when coating is the high-cooling property nano coating, utilize the characteristics of nano material high-specific surface area, can be used for industry or dissipation from electronic devices.
Description of drawings
Fig. 1 is the schematic diagram of heat pipe.
Fig. 2 is the generalized section of heat pipe.
The specific embodiment
Below in conjunction with embodiment content of the present invention is described further, but protection domain of the present invention is not limited only to following examples, everyly belongs to the technical scheme that content of the present invention is equal to, all belong to protection scope of the present invention.
The heat collection type heat pipe is made:
Take sheet metal (1) as aluminium flake, metal tube (2) is example during for copper pipe, is that aluminium flake and the copper pipe of 10cm sent into pressing machine with width, and the position of adjusting copper pipe is positioned at the center of aluminium flake, and the pressure that adopts is 2000KN.After the composite sheet that pressing is good is reeled, put into the preparation that magnetic-control sputtering coiling film coating machine carries out coating for selective absorption TiON; With passing into 12 atmospheric air in the backward copper pipe that is coated with the coating for selective absorption composite sheet, the metal copper pipe is blown circle; Then it is cut into 2 meters long, selects any end as evaporation ends, carry out reducing with necking machine, the other end then is condensation segment, and in the present embodiment, condensation segment is decided to be 15cm.The fin that condensation segment is corresponding is cut, and then reducing is evacuated to 10
-4Pa, the perfusion hydraulic fluid, the working medium in the present embodiment is water, volume is 10mL.Poured into after the working medium, sealed, just obtained complete plate core.
Simultaneously, the present embodiment also can carry out pressing with two wide aluminium flake and copper pipes of 10cm, and this moment, copper pipe was by the centre of double team two aluminum strip.
Need to prove: the pressure that 1) adopts when pressing is 500KN, and it is 2 atmospheric pressure that the metal copper pipe is blown the round pressure that adopts, and is evacuated down to 10 before the filling liquid
-2During Pa, also can obtain complete plate core.
2) pressure that adopts when pressing is 10000KN, and it is 30 atmospheric pressure that the metal copper pipe is blown the round pressure that adopts, and is evacuated down to 10 before the filling liquid
-6During Pa, also can obtain complete plate core.
3) coating for selective absorption is except can magnetron sputtering TiON, and sputter Al-N-Al also can; In addition, can also adopt chemical method black coating nickel or black chromium to make coating for selective absorption; When fin is aluminium, can directly obtain the coating for selective absorption of aluminium oxide with anodised method;
4) sheet metal strip can be any one of aluminium flake, copper sheet, stainless steel substrates, metal tube also can be in aluminum pipe, copper pipe, iron pipe, stainless steel tube, the titanium pipe any, cited band and pipe can make up arbitrarily in twos, and its preparation method is similar with the plate core preparation method of above-mentioned cited " aluminium flake-copper pipe " structure.
5) above-mentioned heat pipe, its working medium can be the mixing of any in water, ethanol, methyl alcohol, liquefied ammonia, acetone, hexane and the toluene or two kinds.
The making of thermal diffusivity heat pipe:
Take sheet metal (1) as aluminium flake, metal tube (2) is example during for copper pipe, is that aluminium flake and the copper pipe of 10cm sent into pressing machine with width, and the position of adjusting copper pipe is positioned at the center of aluminium flake, and the pressure that adopts is 2000KN.After the composite sheet that pressing is good was reeled, in aluminium flake deposition heat radiation coating, the heat radiation coating that the present embodiment adopts was the Nanometer Copper material with flush coater; With passing into 12 atmospheric air in the backward copper pipe of composite sheet that deposits the heat radiation coating, the metal copper pipe is blown circle; Then it is cut into 2 meters long, selects any end as evaporation ends, in the present embodiment, the length of evaporator section is decided to be 0.5 meter, and the fin that evaporator section is corresponding is cut, and carries out reducing with necking machine.The other end then is condensation segment, and in the present embodiment, condensation segment is decided to be 1.5m, then to the condensation segment reducing, is evacuated to 10
-4Pa, the perfusion hydraulic fluid, the working medium in the present embodiment is water, volume is 10mL.Poured into after the working medium, sealed, just obtained complete plate core.
Simultaneously, the present embodiment also can carry out pressing with two wide aluminium flake and copper pipes of 10cm, and this moment, copper pipe was by the centre of double team two aluminum strip.
Need to prove: the pressure that 1) adopts when pressing is 500KN, and it is 2 atmospheric pressure that the metal copper pipe is blown the round pressure that adopts, and is evacuated down to 10 before the filling liquid
-2During Pa, also can obtain complete heat pipe.
2) pressure that adopts when pressing is 10000KN, and it is 30 atmospheric pressure that the metal copper pipe is blown the round pressure that adopts, and is evacuated down to 10 before the filling liquid
-6During Pa, also can obtain complete heat pipe.
3) the heat radiation coating be except being the Cu, also can be any in the nano material of Al, Ag, Ti and carbon.
4) sheet metal strip can be any one of aluminium flake, copper sheet, stainless steel substrates, metal tube also can be in aluminum pipe, copper pipe, iron pipe, stainless steel tube, the titanium pipe any, cited band and pipe can make up arbitrarily in twos, and its preparation method is similar with the plate core preparation method of above-mentioned cited " aluminium flake-copper pipe " structure.
5) above-mentioned heat pipe, its working medium can be the mixing of any in water, ethanol, methyl alcohol, liquefied ammonia, acetone, hexane and the toluene or two kinds.
Claims (6)
1. a finned composite heat pipe comprises metal tube (2), it is characterized in that: sheet metal (1) is pressed together on upper fin, the coating on the fin of forming of metal tube (2); Described coating is selected from any of coating for selective absorption TiON, Al-N-Al, black nickel, black chromium, aluminium oxide, or is selected from any in the nano material of high-cooling property nano coating Cu, Al, Ag, Ti and carbon.
2. finned composite heat pipe claimed in claim 1 is characterized in that described sheet metal (1) for two-layer, and metal tube (2) double team is in the centre of double layer of metal sheet (1).
3. the preparation method of finned composite heat pipe claimed in claim 1 is characterized in that being comprised of following steps:
1) metal tube (2) and sheet metal (1) are carried out pressing by mechanical force, metal tube (2) is crushed and and sheet metal
(1) presses together, obtain composite sheet;
2) make coating on the good composite sheet surface of pressing;
3) in the metal tube that flattens, lead to gases at high pressure, make metal tube (2) fourth contact;
4) with an end reducing sealed of metal tube, the other end seals after vacuumizing and fill with working medium, obtains finned composite heat pipe.
4. the preparation method of finned composite heat pipe as claimed in claim 2 is characterized in that sheet metal (1) is two-layer in the step (1), with the centre of metal tube (2) double team in double layer of metal sheet (1).
5. the preparation method of finned composite heat pipe as claimed in claim 2 is characterized in that sheet metal (1) is one deck in the step (1), and metal tube (2) directly is pressed together on the sheet metal.
6. the preparation method of finned composite heat pipe as claimed in claim 2 is characterized in that the coating described in the step (2) is selected from coating for selective absorption TiON, Al-N-Al, black nickel, deceives any of chromium, aluminium oxide; Or be selected from any in the nano material of high-cooling property nano coating Cu, Al, Ag, Ti and carbon.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104025117A CN102927840A (en) | 2012-10-19 | 2012-10-19 | Composite heat pipe comprising fin and method for manufacturing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104025117A CN102927840A (en) | 2012-10-19 | 2012-10-19 | Composite heat pipe comprising fin and method for manufacturing same |
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| CN102927840A true CN102927840A (en) | 2013-02-13 |
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| CN2012104025117A Pending CN102927840A (en) | 2012-10-19 | 2012-10-19 | Composite heat pipe comprising fin and method for manufacturing same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331768A (en) * | 2015-12-08 | 2016-02-17 | 马鞍山钢铁股份有限公司 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
| CN110542330A (en) * | 2019-09-02 | 2019-12-06 | 枣庄学院 | Water-cooled air cooler capable of being connected in multiple ways |
| CN116772227A (en) * | 2021-12-07 | 2023-09-19 | 北京丰润铭科贸有限责任公司 | Dedicated anti-freezing pipeline of coal fired boiler cooling system |
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| US5572987A (en) * | 1994-07-18 | 1996-11-12 | Moratalla; Jose M. | Solar energy system |
| CN2357282Y (en) * | 1999-02-24 | 2000-01-05 | 黄新华 | Whole copper heat pipe fin for solar water heater |
| CN2439650Y (en) * | 2000-08-15 | 2001-07-18 | 扬州市华扬太阳能热水器有限公司 | Heat-pipe type vacuum heat collector |
| CN2451978Y (en) * | 2000-11-02 | 2001-10-03 | 中国科学院广州能源研究所 | Copper-aluminium heat-absorption plate straight-through vacuum tube heat collector |
| TW200900642A (en) * | 2007-06-21 | 2009-01-01 | Metal Ind Res & Dev Ct | Heat-collecting sheet and manufacturing method thereof |
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2012
- 2012-10-19 CN CN2012104025117A patent/CN102927840A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572987A (en) * | 1994-07-18 | 1996-11-12 | Moratalla; Jose M. | Solar energy system |
| CN2357282Y (en) * | 1999-02-24 | 2000-01-05 | 黄新华 | Whole copper heat pipe fin for solar water heater |
| CN2439650Y (en) * | 2000-08-15 | 2001-07-18 | 扬州市华扬太阳能热水器有限公司 | Heat-pipe type vacuum heat collector |
| CN2451978Y (en) * | 2000-11-02 | 2001-10-03 | 中国科学院广州能源研究所 | Copper-aluminium heat-absorption plate straight-through vacuum tube heat collector |
| TW200900642A (en) * | 2007-06-21 | 2009-01-01 | Metal Ind Res & Dev Ct | Heat-collecting sheet and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331768A (en) * | 2015-12-08 | 2016-02-17 | 马鞍山钢铁股份有限公司 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
| CN110542330A (en) * | 2019-09-02 | 2019-12-06 | 枣庄学院 | Water-cooled air cooler capable of being connected in multiple ways |
| CN116772227A (en) * | 2021-12-07 | 2023-09-19 | 北京丰润铭科贸有限责任公司 | Dedicated anti-freezing pipeline of coal fired boiler cooling system |
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Application publication date: 20130213 |