CN209726884U - A kind of heat pipe for realizing dropwise condensation - Google Patents
A kind of heat pipe for realizing dropwise condensation Download PDFInfo
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- CN209726884U CN209726884U CN201920494883.4U CN201920494883U CN209726884U CN 209726884 U CN209726884 U CN 209726884U CN 201920494883 U CN201920494883 U CN 201920494883U CN 209726884 U CN209726884 U CN 209726884U
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- heat pipe
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Abstract
The utility model discloses a kind of heat pipes for realizing dropwise condensation, outer tube, liquid-sucking core, inner tube and cooling device including upper end opening, liquid-sucking core is arranged in outer tube wall, inner tube is inserted into outer tube and upper end and outer tube are tightly connected, gap is kept between internal liquid-sucking core and inner tube outer surface, cooling device is inserted into internal tube.Both membranaceous solidifying condensation enhanced heat exchange mode had been utilized in the utility model, has also utilized the dropwise condensation enhanced heat exchange mode with more high cooling efficiency, the heat pipe that can be realized than existing only film condensation enhanced heat exchange mode has with high radiating efficiency.
Description
Technical field
The utility model relates to a kind of heat pipes for realizing dropwise condensation, belong to hot pipe technique field.
Background technique
With the proposition of " made in China 2025 ", country will will push great hair of the made in China inside ten big fields
Exhibition especially obtains important technical in fields such as generation information industry, aerospace equipment, energy conservation and new-energy automobile etc.
It breaks through.And in generation information industry big data storage, big data calculate etc. to high performance integrated circuit, CPU etc. is proposed
Higher requirement.During big data storage and calculation processing, it will generate amount of heat, and study surface and have more than
The damage of 55% electronic device be all as temperature it is excessively high caused by.Aerospace is equipped in the operational process of space, also can
A large amount of heat is generated, wherein electronic device plays a significant role the normal operation for maintaining the equipments such as satellite, once there is electricity
Sub- device temperature is excessively high and causes performance decline and damage loss by caused by huge.With the continuous development and progress of the mankind,
Mankind's lazyness has arrived disaster edge with the natural environment survived, and therefore, the mankind are higher and higher to the cry of environmental protection, causes
New-energy automobile comes into being.At present in fields such as new-energy automobiles, mainly provide power by electric energy, i.e., charge type battery and
Fuel cell, chemical cell etc..Battery will cause the generation of big calorimetric during the work time.Fuel cell distribution it is uneven with
Temperature is excessively high all to cause film rupture or fuel battery performance decline even to destroy.Therefore it is badly in need of that advanced heat management is wanted to arrange
It applies, is the fields such as generation information industry, aerospace equipment, energy conservation and new-energy automobile in " made in China 2025 "
Electronic device provides reliable heat management measure.At present in fields such as electronic devices, heat pipe has been widely used for radiating.
Heat pipe traditional at present is made of wall shell and liquid-sucking core, and the effect of liquid-sucking core is to provide the channel of Working fluid flow and move
Power.When heat pipe works, evaporator section is heated, so that working medium evaporation is reached condensation segment through adiabatic section, gaseous working medium coagulates to the cold in condensation segment
Film condensation is formed after knot, evaporator section is back under the driving of liquid-sucking core capillary force, and it is real to form circulation to continue evaporation
Existing heat transfer.But heat pipe traditional at present is mainly the augmentation of heat transfer mode of film condensation.Condensation is reached after working medium evaporation
Section will form liquid film in condensation section surface, and heat carries out heat transfer only in liquid film can just be discharged into air, because liquid film passes
Thermal resistance is larger, and entire condensing surface is covered by liquid film, therefore heat transfer efficiency is lower, it is difficult to it is high-power to meet electronic device
The needs of change and miniaturization.Dropwise condensation can form drop on surface during condensing surface is formed and condensed, in addition to
It is needed to be conducted heat by thermally conductive by the condensing surface that drop covers outer, the surface by drop covering can not pass through heat convection
It conducts heat, so its heat transfer coefficient is 15-20 times of membranaceous heat transfer coefficient.And used heat pipe is mainly membranaceous solidifying at present
Heat transfer modes are tied, dropwise condensation does not relate to really in the application of heat pipe.
Summary of the invention
Technical problem to be solved by the utility model is: a kind of heat pipe for realizing dropwise condensation is provided, it is above-mentioned existing to solve
There is the problem of technology.
The technical solution that the utility model is taken are as follows: a kind of heat pipe for realizing dropwise condensation, outer tube including upper end opening,
Liquid-sucking core, inner tube and cooling device, liquid-sucking core are arranged in outer tube wall, and inner tube is inserted into outer tube and upper end and the outer seal of tube connect
It connects, gap is kept between internal liquid-sucking core and inner tube outer surface, cooling device is inserted into internal tube.
Preferably, above-mentioned cooling device uses condensation pipe, and condensation pipe is with single-screw shape, the spiral shape of intersection or snakelike
Form insertion inner tube and directly contacted with interior pipe internal surface, and fill thermal grease layer in inner tube.
Preferably, above-mentioned heat pipe section is round tubular or rectangular tubulose.
Preferably, above-mentioned liquid sucting core structure is the combining form of powder, silk screen, conduit or powder, silk screen, conduit.
Preferably, above-mentioned inner tube outer surface is provided with the main channel of Working fluid flow, and main channel structure is straight channel, divides shape logical
Road or serpentine channel.
Preferably, above-mentioned main channel groove width becomes narrow gradually from top to bottom.
Preferably, the main channel of above-mentioned setting is surrounded by boss, and the gradient for being able to achieve terraced dropwise condensation is provided on boss
The surface micro-structure of function, surface micro-structure are the surface texture to become larger from top to bottom.
Preferably, above-mentioned upper end of inner tube is provided with the sealing ring end face of evagination, and functional ladder is arranged on the downside of sealing ring end face
Spend surface.
The utility model has the beneficial effects that compared with prior art, the effect of the utility model is as follows:
(1) when the utility model heat pipe works, the formation film condensation in heat pipe outer wall is understood after the working medium evaporation in heat pipe,
And it is back to evaporator section under the action of liquid-sucking core, achieve the purpose that heat dissipation.Meanwhile the working medium of evaporation can also reach the outer of inner tube
Surface, it will form dropwise condensation, and be back to evaporation under the action of the gradient function surface of inner tube outer surface and main channel
Section, realizes the purpose of heat dissipation, is able to achieve the dropwise condensation heat transfer modes of high-termal conductivity, with traditional heat pipe based on film condensation
It compares, there is more high strengthening heat transfer efficiency, by carrying out the preparation of gradient surface to surface, the drop after can be realized working medium evaporation
Shape condensation, and efficient transportation is carried out under liquid sucting core structure, there is high heat transfer characteristic；
(2) it is realized by the liquid-sucking core in outer tube wall face and the gradient function surface in outer wall of inner tube face to condensation working medium
Transport can effectively improve the efficiency of transport, while form film condensation in the liquid-sucking core in outer tube wall face, in the outer wall of inner tube
Face forms dropwise condensation, since the enhanced heat exchange coefficient of dropwise condensation is tens times of film condensation enhanced heat exchange coefficient,
By the combination of film condensation and two kinds of enhanced heat exchange modes of dropwise condensation, heat dissipation effect more higher than existing heat pipe can be realized
Rate, while by the design of the utility model, it can be realized the gradient function based on dropwise condensation enhanced heat exchange of heat pipe wall surface
The processing on surface overcomes and is difficult to the problem on gradient function surface in heat pipe inner wall face, and low in cost, processing method letter
It is single, it is easy to accomplish；
(3) after realizing condensation by outer pipe internal surface liquid-sucking core and inner tube outer surface gradient function surface in the utility model
Working medium reflux, compared to the reflux of single liquid-sucking core, back-flow velocity faster, so as to further increase the heat dissipation effect of heat pipe
Rate improves heat pipe in axial temperature uniformity, reduces heat pipe because evaporator section working medium " being evaporated " caused by heat flow density is higher is existing
The generation of elephant；
(4) it is condensed, has been further speeded up in heat pipe by the internal pipework condensation section of condensing unit in the utility model
The dropwise condensation rate of tube outer surface, further increases the radiating efficiency of heat pipe, while in use, heat pipe middle external tube
Outer surface be equipped with cooling fin accelerate the film condensation of outer tube liquid-sucking core formation, so that the radiating efficiency of heat pipe is obtained larger mention
It rises；
(5) it is set in the utility model by inner tube and outer tube to form heat pipe, is easy to process micro-nano in inner tube outer surface
Structure forms gradient function surface, and realizing has the dropwise condensation enhanced heat exchange mode of high efficiency and heat radiation, can overcome and be difficult in heat
Pipe internal surface processes the shortcomings that micro-nano structure forms gradient function surface, therefore cost is cheaper, and compared in heat pipe
Surface processing micro-nano structure is physically easier to perform.
Detailed description of the invention
Fig. 1 is that the structure of the utility model splits schematic diagram；
Fig. 2 is that the structure of the utility model splits partial enlargement diagram；
Fig. 3 is the inner tube structure schematic diagram of the utility model；
Fig. 4 is the inner tube structure plane view of the utility model；
Fig. 5 is that the utility model cooling device and inner tube become snakelike cooling device and elongated tubular inner tube schematic diagram；
Fig. 6 is the portion the A enlarged structure schematic diagram of Fig. 5；
Fig. 7 is the inner tube surface micro-structure enlarged structure signal of the utility model.
Specific embodiment
With reference to the accompanying drawing and the utility model is described further in specific embodiment.
Spider silk in nature can quickly absorb the moisture in air by way of dropwise condensation, and realize long distance
From linear transport for spider existence needed for.Spider silk be evolved within a kind of 1 years and the excellent water suction of one kind that is formed and remote
Apart from transport structure, work and transport principle and heat pipe working principle it is very much like.By nature spider silk in air
The absorption of moisture and the inspiration survived by long distance transportation for spider, the quasi- structure by imitating spider silk of the utility model are real
The conversion of existing heat pipe condensation mode, improves the heat transfer efficiency of heat pipe.
Embodiment 1: as shown in Fig. 1-Fig. 7, a kind of heat pipe for realizing dropwise condensation, heat pipe is divided into three sections, that is, steams
Section, isolation section and condensation segment are sent out, in outer tube 4, liquid-sucking core 3, the sealing of upper end opening lower end including the sealing of upper end opening lower end
Pipe 2 and cooling device 1, liquid-sucking core 3 are arranged in 4 inner wall of outer tube, and inner tube 2 is inserted into outer tube 4 and upper end and the sealing of outer tube 4 connect
It connects, the gap of steam flowing is kept between 2 outer surface of internal liquid-sucking core 3 and inner tube, inner tube outer surface is the dropwise condensation of spider silk
Surface, based on water suction spider silk structure and principle production, which is after the radial distance of liquid-sucking core and inner tube is working medium evaporation
Gaseous working medium flow channel, cooling device 1 is inserted into inside inner tube 2, when heat pipe works, can exist after the working medium evaporation in heat pipe
The formation film condensation of heat pipe outer wall, and it is back to evaporator section under the action of liquid-sucking core, achieve the purpose that heat dissipation, meanwhile, it steams
The working medium of hair can also reach the outer surface of inner tube, it will form dropwise condensation, and on the gradient function surface of inner tube outer surface and
It is back to evaporator section under the action of main channel, realizes the purpose of heat dissipation.
Preferably, above-mentioned cooling device 1 uses condensation pipe, and condensation pipe is with single-screw shape, the spiral shape of intersection or snake
The form of shape is inserted into inner tube 2 and is directly contacted with 2 inner surface of inner tube, and fills thermal grease layer in inner tube, reduces condensing unit
Thermal contact resistance between inner tube, to realize the high-efficiency condensation of inner tube.
Preferably, above-mentioned heat pipe section is round tubular or rectangular tubulose, and inner tube 2 is circular tube shaped, coniform or strip,
Preferably circular tube shaped, heat transfer property are more preferable.
Preferably, above-mentioned 3 structure of liquid-sucking core is the combining form of powder, silk screen, conduit or powder, silk screen, conduit.
Preferably, above-mentioned 2 outer surface of inner tube is provided with the main channel 5 of Working fluid flow, and 5 structure of main channel is straight channel, divides
Shape channel or serpentine channel.
Preferably, above-mentioned 5 groove width of main channel becomes narrow gradually from top to bottom, and dropwise condensation can be formed by moisture through transporting
Defeated arrival evaporator section.
Preferably, the main channel 5 of above-mentioned setting is surrounded by boss 6, and the ladder for being able to achieve terraced dropwise condensation is provided on boss 6
Spend function surface micro-structure, surface micro-structure be the surface texture to become larger from top to bottom, as shown in fig. 7, pass through laser engraving,
The processing technologys such as chemical attack easily process the micro-structure of realization dropwise condensation heat transfer in the outer surface of inner tube, can overcome
It is difficult to the problem of heat pipe inner surface processes gradient function surface, using surface micro-structure, forms dropwise condensation in boss surface,
And it is transported under the action of gradient surface energy.
Preferably, above-mentioned 2 upper end of inner tube is provided with the sealing ring end face of evagination, and functional ladder is arranged on the downside of sealing ring end face
Surface is spent, the structure that the surface centered on the structure on functionally gradient surface to edge can gradually decrease, sealing ring end face seal is welded
It connects in 1 upper end of outer tube, functionally gradient surface texture, can be realized dropwise condensation, while directly contacting with the liquid-sucking core of outer tube, lead to
Crossing liquid-sucking core may be implemented the transport of drop and is back to evaporator section, can also be under the action of inner tube outer surface gradient surface structure
It is back to evaporator section.
The new heat pipe of the utility model is made of outer tube, outer tube liquid-sucking core, inner tube and condensing unit, by
Outer tube wall sintered wicks, by inner tube set in outer tube, and there are the spaces of steam flowing between outer tube and inner tube, will
Inner tube and outer tube carry out directly welding and form complete heat pipe.Straight trough road, snakelike conduit are machined in inner tube outer surface and are divided
Shape conduit etc. is machined with gradient function surface in the boss surface that conduit is surrounded.Enable becoming larger surface from top to bottom gradually
It reduces, and forms dropwise condensation in boss surface, and transported under the action of gradient surface energy.The inner surface of inner tube is direct
It is contacted with condensing unit, condensation segment is cooled down.The heat pipe can be realized membranaceous and two kinds of heat exchange modes of drop-wise, together
When, the liquid refrigerant after condensation can be in the work on the liquid-sucking core of outer pipe internal surface and the gradient function surface of inner tube outer surface
With flowing back, the reflux of working medium can speed up to enhance the temperature uniformity of heat pipe axial direction, while preventing evaporation ends working medium from " steaming
It is dry " the phenomenon that occur.By realizing inner tube and external welding installation, the processing technologys sides such as laser engraving, chemical attack can be passed through
Just the micro-structure that realization dropwise condensation heat transfer is processed in the outer surface of inner tube can overcome and be difficult to process in heat pipe inner surface
The problem of gradient function surface, and low processing cost, simple process and be easily achieved.And it is suitble to high-power, high heat flux density
Radiating requirements, have broad application prospects.
In conclusion the advantages of the utility model, is as follows:
(1) membranaceous solidifying condensation enhanced heat exchange mode had both been utilized in the utility model, also utilizing has higher heat dissipation effect
The dropwise condensation enhanced heat exchange mode of rate, the heat pipe that can be realized than existing only film condensation enhanced heat exchange mode have with high
Radiating efficiency.Film condensation will be formed in the liquid sucting core structure of outer tube wall after working medium evaporation in heat pipe and inhaling
Evaporator section is back under the capillary force effect of wick-containing and continues evaporation and forms circulation, while the working medium after evaporation also can be outside inner tube
Surface forms dropwise condensation, and the dropwise condensation of formation is back to main channel under the action of gradient function surface, then is back to steaming
Section is sent out, circulation is formed.Therefore the working medium in the utility model can be realized by liquid-sucking core and gradient function surface two ways
Reflux, therefore compared with the existing single heat pipe to be flowed back by liquid-sucking core reflux type, there is higher radiating efficiency.
(2) it is set in the utility model by inner tube and outer tube to form heat pipe, is easy to process micro-nano in inner tube outer surface
Structure forms gradient function surface, and realizing has the dropwise condensation enhanced heat exchange mode of high efficiency and heat radiation, can overcome and be difficult in heat
Pipe internal surface processes the shortcomings that micro-nano structure forms gradient function surface, therefore cost is cheaper, and compared in heat pipe
Surface processing micro-nano structure is physically easier to perform.
(3) after realizing condensation by outer pipe internal surface liquid-sucking core and inner tube outer surface gradient function surface in the utility model
Working medium reflux, compared to the reflux of single liquid-sucking core, back-flow velocity faster, so as to further increase the heat dissipation effect of heat pipe
Rate improves heat pipe in axial temperature uniformity, reduces heat pipe because evaporator section working medium " being evaporated " caused by heat flow density is higher is existing
The generation of elephant.
(4) it is condensed, has been further speeded up in heat pipe by the internal pipework condensation section of condensing unit in the utility model
The dropwise condensation rate of tube outer surface, further increases the radiating efficiency of heat pipe, while in use, heat pipe middle external tube
Outer surface be equipped with cooling fin accelerate the film condensation of outer tube liquid-sucking core formation, so that the radiating efficiency of heat pipe is obtained larger mention
It rises.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model, therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (8)
1. a kind of heat pipe for realizing dropwise condensation, it is characterised in that: outer tube (4), liquid-sucking core (3), inner tube including upper end opening
(2) with cooling device (1), liquid-sucking core (3) is arranged in outer tube (4) inner wall, and inner tube (2) is inserted into outer tube (4) and upper end and outer
It manages (4) to be tightly connected, gap is kept between internal liquid-sucking core (3) and inner tube (2) outer surface, cooling device (1) is inserted into inner tube (2)
It is internal.
2. a kind of heat pipe for realizing dropwise condensation according to claim 1, it is characterised in that: cooling device (1) is using cold
Solidifying pipeline, condensation pipe with single-screw shape, the spiral shape of intersection or snakelike form insertion inner tube (2) and with inner tube (2) interior table
Face directly contacts, and fills thermal grease layer in inner tube.
3. a kind of heat pipe for realizing dropwise condensation according to claim 1, it is characterised in that: heat pipe section is round tubular
Or rectangular tubulose.
4. a kind of heat pipe for realizing dropwise condensation according to claim 1, it is characterised in that: liquid-sucking core (3) structure is powder
The combining form of end, silk screen, conduit or powder, silk screen, conduit.
5. a kind of heat pipe for realizing dropwise condensation according to claim 1, it is characterised in that: the setting of inner tube (2) outer surface
There is the main channel (5) of Working fluid flow, main channel (5) structure is straight channel, divides shape channel or serpentine channel.
6. a kind of heat pipe for realizing dropwise condensation according to claim 5, it is characterised in that: main channel (5) groove width is from upper
It is become narrow gradually under.
7. a kind of heat pipe for realizing dropwise condensation according to claim 5, it is characterised in that: enclose the main channel (5) of setting
At having boss (6), boss is provided with the surface micro-structure for being able to achieve the gradient function of terraced dropwise condensation, surface micro-structure on (6)
For the surface texture to become larger from top to bottom.
8. a kind of heat pipe for realizing dropwise condensation according to claim 5, it is characterised in that: inner tube (2) upper end is provided with
The sealing ring end face of evagination, sealing ring end face downside are provided with functionally gradient surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920494883.4U CN209726884U (en) | 2019-04-12 | 2019-04-12 | A kind of heat pipe for realizing dropwise condensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920494883.4U CN209726884U (en) | 2019-04-12 | 2019-04-12 | A kind of heat pipe for realizing dropwise condensation |
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| CN209726884U true CN209726884U (en) | 2019-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883229A (en) * | 2019-04-12 | 2019-06-14 | 贵州大学 | A kind of heat pipe structure for realizing dropwise condensation |
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2019
- 2019-04-12 CN CN201920494883.4U patent/CN209726884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883229A (en) * | 2019-04-12 | 2019-06-14 | 贵州大学 | A kind of heat pipe structure for realizing dropwise condensation |
| CN109883229B (en) * | 2019-04-12 | 2024-02-06 | 贵州大学 | Heat pipe structure for realizing drop-shaped condensation |
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