CN208653277U - A kind of heat pipe - Google Patents
A kind of heat pipe Download PDFInfo
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- CN208653277U CN208653277U CN201820929098.2U CN201820929098U CN208653277U CN 208653277 U CN208653277 U CN 208653277U CN 201820929098 U CN201820929098 U CN 201820929098U CN 208653277 U CN208653277 U CN 208653277U
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Abstract
The utility model belongs to heat-transfer equipment technical field, and in particular to a kind of heat pipe, which is characterized in that including the shell with closed cavity and is sealed in the heat transfer cycle layer being made of in shell liquid-sucking core and working medium, the heat transfer cycle layer is in melting or liquid condition.It is simple using the technical solution of the utility model structure, it is low in cost, it is conducive to production, has broad application prospects.
Description
Technical field
The utility model belongs to heat-transfer equipment technical field, and in particular to a kind of heat pipe.
Background technique
With the fast development of the industries such as electronics industry, aerospace industry and equipment manufacture industry, modern industry is to heat dissipation
Requirement it is also higher and higher.Due to the birth of high heat flux density element, equipment etc., traditional wind-cooling heat dissipating has reached heat dissipation pole
Limit and far from meeting cooling requirements, liquid-cooling heat radiation is also because its is at high cost, system complex and has the shortcomings that leakage is difficult to always
It is generalizable.Heat pipe is that the element of heat transfer is realized by the phase transformation of therein working fluid, have efficient heat-conductive characteristic and
Excellent isothermal plays the role of more and more extensive in fields such as aeronautical engineering, electronic component cooling, Solar uses.
Hot pipe technique is George Ge Luofo of U.S. Los Alamos (Los Alamos) National Laboratory in 1963
One kind of (George Grover) invention is known as the heat transfer element of " heat pipe ", it takes full advantage of heat-conduction principle and refrigeration is situated between
The heat of thermal objects is transmitted to outside heat source rapidly by the quick thermal transport property of matter through heat pipe, and the capacity of heat transmission is more than to appoint
The capacity of heat transmission of He Yizhi metal.
The heat absorption of substance, heat release be it is opposite, it is all with the presence of the temperature difference, just necessarily there is heat and passed from high temperature at low temperature
The phenomenon that passing.From the point of view of the mode of heat transmitting (radiation, convection current, conduction), wherein the most fast power of heat transfer is maximum.Heat pipe is exactly benefit
Conduct heat quickly so that heat pipe both ends temperature difference is very big with sweat cooling, typical heat pipe is by shell and liquid-sucking core group
At, it is filled with suitable working medium after being evacuated in pipe, makes to be sealed after being full of working medium in the liquid-sucking core for being close to inside pipe wall, pipe
One end is evaporator section, the other end is condensation segment, and when one end of the heat pipe is heated, the liquid evaporation gasification in capillary wick, steam exists
Condensation segment is flowed under the action of small pressure difference and releases heat, liquid is condensed into after gas-phase working medium heat release, liquid is in capillary head
Evaporator section is flowed back into along liquid-sucking core again under effect, so constantly circulation, heat reach the other end by one end.The heat pipe of the type
Work is not limited by direction, i.e., evaporator section can be arranged in the top of condensation segment according to actual needs.
For liquid-sucking core as the core component in heat pipe, main function is to provide capillary draft to drive the work of heat pipe to be situated between
Matter is back to evaporator section from condensation segment, and working media is evenly distributed in heat pipe evaporator section, and performance directly affects heat
The heat-transfer effect of pipe.The type of liquid-sucking core in heat pipe substantially has wire mesh, axial slot, sintering metal powder and compound suction
The forms such as wick-containing, performance respectively have superiority and inferiority, and wire mesh, axial slot, sintering metal powder type working medium have when not boiling
Certain thermal resistance, after working medium is boiled, the thermal resistance of liquid-sucking core declines, but if heat flow density increase will occur to a certain extent
Heat transport limitation, for example, general agglutinating property liquid-sucking core in sintering among be inserted into cylindricality plug, the liquid-sucking core that is sintered out is along axial etc.
The shortcomings that thickness, the liquid-sucking core is that the core layer thickness far from fire end is remaining, and condensate film is thicker, increases condensation heat transfer resistance
Power reduces rate of heat transfer, and the core layer thickness close to fire end is insufficient, influences working medium regurgitant volume, reduces heat-transfer capability.In addition cylindricality
Plug keeps depoling difficult due to the presence of machining tolerance and deformation.Such as the China that Authorization Notice No. is CN104759627B is specially
Benefit discloses a kind of method for manufacturing micro heat pipe by reduction-oxidation copper powder, in order to prepare high porosity sintered copper as imbibition
Core is controlled using cupric oxide powder gap and using the Mixed adjustment particulate interspaces of the cupric oxide powder of different grain size size
The porosity and pore size of the sintered porous copper formed after required oxidation copper reduction are generated using high porosity and varying aperture
Capillarity realize the Rapid Circulation of medium phase transition process in heat pipe, manufacturing process includes: that (1) clearance is cleaned and dried；(2)
It is placed in die clamper and positions and be put into intermediolateral column, be then injected into cupric oxide powder and jolt ramming；(3) reduction sintering；(4) one end welding,
One end necking down processing；(5) it vacuumizes injection water and encapsulates；(6) round shape properties of hot pipe detects；(7) bending and deformation molding；From upper
As it can be seen that preparation method is very cumbersome time-consuming, and it cannot be guaranteed that every series-produced properties of hot pipe is identical, and cost is high；
And compound liquid-sucking core thermal resistance is lower, but structure is complicated.Therefore the heat pipe of development of new has broad prospects.
Utility model content
In order to solve the problems in the existing technology, the utility model provides a kind of new heat pipe, which is characterized in that
Including the shell with closed cavity and it is sealed in the heat transfer cycle layer being made of in shell liquid-sucking core and working medium (heat-transfer working medium),
The heat transfer cycle layer is in melting or liquid condition.
Become gaseous state after the working medium is heated and takes away heat.
In a preferred scheme, liquid-sucking core and working medium are independently and be not simultaneously solvent and solute.
Solute can be liquid or solid, and when solvent is liquid and solute is also liquid, solute is heat-transfer working medium；Solvent is
When liquid and solute are solids, solvent is heat-transfer working medium.
Heat-transfer working medium evaporation endothermic when the heat pipe somewhere is heated moves under pressure difference effect to low-temperature space and by heat
It is sent to low-temperature space, to realize heat transfer, condensed working medium then passes through solvent channel or rests on the substance of tube wall (tube wall is logical
Road) constitute channel spread go back to heat affected zone, so as to continuously recycle.In this course of work, solvent is acted on due to high viscosity
It is motionless to substantially remain in original place, channel is always existed, steam is transmitted by pipeline to be formed vapor-liquid separation and to follow
Ring can carry out always.
The tube wall channel is formed since working medium evaporation rests on tube wall with a part of liquid-sucking core.
In a preferred embodiment, the heat transfer cycle layer further includes enhancer, and the enhancer is that can enhance
To the solid of liquid refrigerant attraction, which can be the solid that can be dissolved in solute or can be dissolved in solvent for thermally conductive or enhancing,
It can be the solid that cannot be dissolved in solute or solvent, the characteristic of enhancer is often that can be improved to stop the viscous of in-situ substance
Degree, or its thermal conductivity is improved, while reducing the formation of vapour-liquid column, or enhancing aspirates the effects of flowing back to worker quality liquid, in this way may be used
To accelerate the quick backflow and circulation of working medium, and improve heat transfer efficiency.
The liquid-sucking core and working medium independently can be in liquid, solid or coexistence of gas and liquid form, as long as liquid-sucking core
The purpose of the present invention can be reached in melting or liquid condition by combining with working medium.
In a preferred scheme, the working medium is liquid.
Illustratively, the liquid-sucking core be refrigeration oil, cellulose, polyvinyl alcohol, waterglass, glycerine and calcium chloride etc. or
With the mixture of other solids composition.
Illustratively, the working medium is refrigerant, water etc..
Illustratively, the enhancer is modified starch, graphene, carbon dust, copper powder, bentonite etc..
In a preferred embodiment, the dosage weight ratio of the solute and solvent is 1:(1-10).
The advantages of using the ratio are as follows: can preferably keep liquid level parallel when horizontal heat transfer, while reduce wall surface thermal resistance, mention
Highly resistance dry combustion method ability.
In a preferred embodiment, the heat transfer cycle layer is highly heat pipe diameter in heat pipe diametrical direction
0.01-0.5 times.
In a preferred embodiment, the inner wall of the shell is equipped with a series of protrusions being parallel to each other.Using this
The advantages of raised structures are as follows: refrigeration oil limitation refrigeration oil flowing can be fixed, guarantee continuously going on smoothly for imbibition.Or it is described
Inner wall of tube shell filling can play identical work just like fiber, copper wire or copper mesh, carbon fiber, carbon dust, the fillers such as bentonite
With.
There is great advantage compared with sintered copper heat pipe, sintered copper heat pipe needs key equipment there are about more than ten, needs larger
Investment ability running, making material are only limitted to copper pipe, and length is general to be no longer than 1 meter by equipment limit.What new method needed
Equipment is fewer than sintered copper and simple, needs cost of investment than sintered copper much less, new method making material is not limited to copper, any
Material is ok, and length is also unrestricted, is thus greatly expanded the use scope of heat pipe and is reduced manufacturing cost, passes in level
Poor unlike sintered copper in thermal energy power, more advantageous than sintered copper heat pipe etc. more in heat dissipation heat transfer market, cost performance is advantageous.
Detailed description of the invention
Fig. 1 is the utility model embodiment heat pipe structure schematic diagram；
Fig. 2 is the utility model embodiment heat pipe structure schematic diagram；
1 is cavity in figure, and 2 be shell, and 3 be liquid-sucking core, and 4 be working medium, and 5 be protrusion, and 6 be heat transfer cycle layer.
Specific embodiment
In order to better understand the content of the utility model, below with reference to specific embodiment in the utility model
Appearance is described in detail, but specific embodiment is not the limitation to the content of the present invention.
Embodiment 1: heat pipe production method
Cutting corresponding size diameter by drawing is 10mm aluminum pipe, and scavenging duct inside and outside wall seals pipe with machine for shrinking spinning
To sealing, soldering is sealed up for one end, is bent into 90 degree as required, glycerine 15g and cellulose 2g is perfused, with machine for shrinking spinning aluminum pipe
The other end to drawing is sized generally internal diameter 3mm, and long 50mm is as process duct, technique of burn-oning in every process duct valve,
It is vacuumized by technique valve, setting time 60S, by technique valve priming petock 15g, is set as every pipe 30g, in 50 DEG C of hot water
Middle test, two test point temperature by extra incoagulable gas in technique valve drain to every pipe are consistent, use Sealing pliers
It is sealed at process duct, seals up sealing with argon arc welding or soldering, production finishes, and packs shipment.
Horizontal heat transfer comparative test
2 water of embodiment and glycerine combination
The heat pipe that template 1(embodiment 1 of the present invention is prepared) with the horizontal heat-sinking capability test comparison of sintered copper heat pipe: it burns
Copper heat pipe geomery is tied, wall thickness 0.3mm red copper pipe diameter 8mm sintering is flattened to 6mm, length 670mm.1 wall thickness 1mm of template
500mm, condensation are both heated with identical temperature platform level in 6061 aluminum pipe diameter 10mm, length 1100mm, heating position
Position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 1 are big, and the heating condition of sintered copper heat pipe is better than template 1,
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 30S, which does repeatedly
It is 3 times, as a result close, it is averaged, 2.1 DEG C of coolant water temperature temperature rise sintered copper, 2.5 DEG C of 1 coolant water temperature temperature rise of template.Pass through ratio
It is slightly better than sintered copper heat-sinking capability compared with 1 heat-sinking capability of template.
In heat pipe only heat transfer medium (working medium) without the common small-diameter heat of other structures include fluted tube heat pipe all
It is unable to persistent levels heat transfer, heated rear heat transfer medium can cannot all flow back so as to cause heating surface dry combustion method, heat transfer toward cold end concentration
Heat dissipation failure.
Embodiment 3: water and polyvinyl alcohol combination
Template 2 is made according to the method for embodiment 1, and wherein working medium is water 15g, and liquid-sucking core is polyvinyl alcohol 4g, with sintering
The horizontal heat-sinking capability test comparison of copper heat pipe: sintered copper heat pipe geomery, wall thickness 0.3mm red copper pipe diameter 8mm sintering are flattened
To 6mm, length 670mm.Phase is both used at 2 wall thickness 1mm of template 6061 aluminum pipe diameter 10mm, length 1100mm, heating position
500mm is heated with temperature platform level, condensation position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 2 are big, and the heating condition of sintered copper heat pipe is better than template, survey
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 30S, which does repeatedly
It is 3 times, as a result close, it is averaged.2.1 DEG C of coolant water temperature temperature rise sintered copper, 2.4 DEG C of 2 coolant water temperature temperature rise of template, by comparing
2 heat-sinking capability of template is slightly better than sintered copper heat-sinking capability.
Template 2 is suitable for horizontal and is tilted a certain angle downward heat transfer.
Embodiment 4: water and the combination of graphene and waterglass
Template 3 is made according to the method for embodiment 1, and wherein working medium is water 15g, and liquid-sucking core is waterglass 4g, and enhancer is
Graphene 2g, and the horizontal heat-sinking capability test comparison of sintered copper heat pipe: sintered copper heat pipe geomery, wall thickness 0.3mm copper tube
Diameter 8mm sintering is flattened to 6mm, length 670mm.3 wall thickness 1mm of template 6061 aluminum pipe diameter 10mm, length 1100mm, heating
500mm is both heated with identical temperature platform level in position, and condensation position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 3 are big, and the heating condition of sintered copper heat pipe is better than template, survey
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 30S, which does repeatedly
It is 3 times, as a result close, it is averaged.2.1 DEG C of coolant water temperature temperature rise sintered copper, 2.7 DEG C of 2 coolant water temperature temperature rise of template, by comparing
3 heat-sinking capability of template is slightly better than sintered copper heat-sinking capability.
Template 3 is suitable for high-temperature region and heat transfer efficiency is high.
Embodiment 5: modified starch and the combination of water and calcium chloride
Template 4 is made according to the method for embodiment 1, and wherein working medium is water 30g, and liquid-sucking core is calcium chloride 3g, and enhancer is
Chlorine modified starch 2g is purple with the horizontal heat-sinking capability test comparison of sintered copper heat pipe: sintered copper heat pipe geomery, wall thickness 0.3mm
Copper pipe diameter 8mm sintering is flattened to 6mm, length 670mm.4 wall thickness 1mm of template 6061 aluminum pipe diameter 10mm, length 1100mm,
It heats position and both heats 500mm with identical temperature platform level, condensation position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 4 are big, and the heating condition of sintered copper heat pipe is better than template, survey
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 2min, which does repeatedly
It is 3 times, as a result close, it is averaged.6.7 DEG C of coolant water temperature temperature rise sintered copper, 10.5 DEG C of 2 coolant water temperature temperature rise of template, passes through
It is slightly better than sintered copper heat-sinking capability to compare 4 heat-sinking capability of template.
The anti-dry combustion method ability of template 4 is stronger.
Embodiment 6:R134a and refrigeration oil combination
Template 5 is made according to the method for embodiment 1, and wherein working medium is R134a 30g, and liquid-sucking core is refrigeration oil 10g, with burning
Tie the horizontal heat-sinking capability test comparison of copper heat pipe: sintered copper heat pipe geomery, wall thickness 0.3mm red copper pipe diameter 8mm sintering pressure
It is flat to 6mm, length 670mm.5 wall thickness 1mm of template 6061 aluminum pipe diameter 10mm, length 1100mm, heating position are both used
Identical temperature platform level heats 500mm, and condensation position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 5 are big, and the heating condition of sintered copper heat pipe is better than template, survey
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 30S, which does repeatedly
It is 3 times, as a result close, it is averaged.2.1 DEG C of coolant water temperature temperature rise sintered copper, 2.8 DEG C of 5 coolant water temperature temperature rise of template, by comparing
5 heat-sinking capability of template is slightly better than sintered copper heat-sinking capability.
Template 5 is suitable for middle low-temperature space.
Embodiment 7: water and glycerine combination
Template 6 is made according to the method for embodiment 1, and wherein working medium is water 15g, and liquid-sucking core is glycerine 4g, with sintered copper
The horizontal heat-sinking capability test comparison of heat pipe: sintered copper heat pipe geomery, wall thickness 0.3mm red copper pipe diameter 8mm sintering are flattened extremely
6mm, length 670mm.6 wall thickness 1mm of template 6061 aluminum pipe diameter 10mm, length 1100mm, heating position are both used identical
Temperature platform level heats 500mm, and condensation position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 6 are big, and the heating condition of sintered copper heat pipe is better than template, survey
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 30S, which does repeatedly
It is 3 times, as a result close, it is averaged.2.1 DEG C of coolant water temperature temperature rise sintered copper, 2.8 DEG C of 5 coolant water temperature temperature rise of template, by comparing
6 heat-sinking capability of template is slightly better than sintered copper heat-sinking capability.
Template 6 is suitable for high temperature area.
Embodiment 8: acetone and cellulose acetate combination
Template 7 is made according to the method for embodiment 1, wherein working medium is acetone 15g, and liquid-sucking core is cellulose acetate 4g, with
The horizontal heat-sinking capability test comparison of sintered copper heat pipe: sintered copper heat pipe geomery, wall thickness 0.3mm red copper pipe diameter 8mm sintering
It flattens to 6mm, length 670mm.7 wall thickness 1mm of template 6061 aluminum pipe diameter 10mm, length 1100mm, heating position is both
500mm is heated with identical temperature platform level, condensation position is also horizontal.
Wherein sintered copper heat pipe and contact with platform area ratio template 7 are big, and the heating condition of sintered copper heat pipe is better than template, survey
Test result is as follows: cooling water initial temperature is all 18 DEG C, and water is all 50ml, and cooling time is all 30S, which does repeatedly
It is 3 times, as a result close, it is averaged, 2.1 DEG C of coolant water temperature temperature rise sintered copper, 2.4 DEG C of 7 coolant water temperature temperature rise of template.By comparing
7 heat-sinking capability of template is slightly better than sintered copper heat-sinking capability.
Claims (10)
1. a kind of heat pipe, which is characterized in that including the shell with closed cavity and be sealed in shell by liquid-sucking core and working medium
The heat transfer cycle layer of composition, the heat transfer cycle layer is in melting or liquid condition.
2. heat pipe according to claim 1, which is characterized in that the liquid-sucking core and working medium are independently and not molten simultaneously
Agent and solute.
3. heat pipe according to claim 2, which is characterized in that the solute can be liquid or solid.
4. heat pipe according to claim 3, which is characterized in that include since working medium is evaporated with a part on the shell
Liquid-sucking core rests on the tube wall worker quality liquid channel formed on tube wall.
5. heat pipe according to claim 4, which is characterized in that the heat transfer cycle layer further includes enhancer.
6. heat pipe according to claim 5, which is characterized in that the enhancer is that can enhance thermally conductive or enhancing to inhale working medium
The solid of gravitation, the solid can be the solid that can be dissolved in solute or can be dissolved in solvent, be also possible to that solute or molten cannot be dissolved in
The solid of agent.
7. heat pipe according to claim 4, which is characterized in that the working medium is liquid.
8. heat pipe according to claim 4, which is characterized in that the dosage weight ratio of the solute and solvent is 1:(1-
10).
9. heat pipe according to claim 4, which is characterized in that the inner wall of the shell be equipped with it is a series of be parallel to each other it is prominent
It rises or inner wall of tube shell filling is just like fiber, copper wire or copper mesh, carbon fiber, carbon dust, the fillers such as bentonite.
10. according to the described in any item heat pipes of claim 5-9, which is characterized in that the heat transfer cycle layer is in heat pipe diameter side
Height is 0.01-0.5 times of heat pipe diameter upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820929098.2U CN208653277U (en) | 2018-06-15 | 2018-06-15 | A kind of heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820929098.2U CN208653277U (en) | 2018-06-15 | 2018-06-15 | A kind of heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208653277U true CN208653277U (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820929098.2U Active CN208653277U (en) | 2018-06-15 | 2018-06-15 | A kind of heat pipe |
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| CN (1) | CN208653277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319891A (en) * | 2022-08-31 | 2022-11-11 | 马东辰 | Production process and equipment of refractory and heat-insulating material |
-
2018
- 2018-06-15 CN CN201820929098.2U patent/CN208653277U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319891A (en) * | 2022-08-31 | 2022-11-11 | 马东辰 | Production process and equipment of refractory and heat-insulating material |
| CN115319891B (en) * | 2022-08-31 | 2024-01-12 | 怀仁市心连心瓷料有限公司 | Production process and equipment for refractory heat insulation material |
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Address after: 311100 room 207, building 18, No. 998, Wenyi West Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Wuhao Technology (Zhejiang) Co.,Ltd. Address before: 311100 room 207, building 18, No. 998, Wenyi West Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU SHANGNENG THERMAL CONDUCTIVITY TECHNOLOGY Co.,Ltd. |