CN108601288A - A kind of high-power matrix fin enhanced heat exchange phase transition heat sink - Google Patents
A kind of high-power matrix fin enhanced heat exchange phase transition heat sink Download PDFInfo
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- CN108601288A CN108601288A CN201810202216.4A CN201810202216A CN108601288A CN 108601288 A CN108601288 A CN 108601288A CN 201810202216 A CN201810202216 A CN 201810202216A CN 108601288 A CN108601288 A CN 108601288A
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- phase
- change material
- heat sink
- heat
- phase transition
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a kind of high-power matrix fin enhanced heat exchange phase transition heat sinks, including bottom plate, phase-change material, matrix fin, shell and phase-change material fill hole, bottom plate forms the seal chamber for carrying phase-change material with shell, and it is covered with matrix fin above bottom plate, phase-change material fills hole and is connected with seal chamber, bottom plate bottom surface is contacted with heat source, for absorbing heat from heat source, and pass to phase-change material, a cavity is equipped with above shell, it is connected with a cover board above the cavity, and the fluid channel being connected equipped with a fluid circuit in the cavity, shell is equipped with the fluid inlet tubes being connected with the fluid channel, fluid outlet pipe.The present invention provides the big heat sink forms of a kind of convenient and efficient and quantity of heat storage, are taken away heat from heat source by fluid circuit；Paraffin class phase-change material synthesis heat conductivility is improved, phase-change material melting process temperature distribution evenness is improved, is suitable for the thermal control of spacecraft high-power fever single machine in short-term.
Description
Technical field
The invention belongs to thermal management technology fields, relate generally to a kind of high-power matrix fin enhanced heat exchange phase transition heat sink.
Background technology
With the development of space technology, the type of single machine is more and more, has a kind of single machine calorific value larger, heat flow density compared with
Height, and be in short-term, periodic duty.If these heats dissipation not in time, it will so that the temperature of single machine is risen excessively high, lead to its property
It can decline, the function of single machine and service life will be caused to be affected when more serious.For in short-term, the single machine of periodic duty, phase
It is a kind of selection well to become thermal control technology.When single machine operational heat, phase-change material absorbs heat and melts, and makes single machine temperature
It maintains near transformation temperature；After single machine is stopped, phase transition heat sink is solidified by radiating heat rejection and removal, on the one hand remains single
On the other hand the temperature of machine is prepared for next working cycles.During phase change material releases heat, fluid circuit can increase scattered
Thermal power shortens phase-change material setting time.
Paraffin is a kind of phase-change material for being widely used in spacecraft thermal control, and latent heat of phase change is larger, phase transformation point range compared with
Extensively, chemical stability is preferable, has good compatibility with various metals, the supercooling of phase transition process and superheating phenomenon are less bright
It is aobvious.But the maximum defect of paraffin class phase-change material is that thermal coefficient itself is very low (generally in 0.15W/mK or so), this is serious
The transmission of heat inside it in phase transition process is affected especially to limit in melting process to reduce its heat exchange property
Endothermic power.The light-weight metal fin of high thermal conductivity coefficient, usually magnesium or aluminium are added in paraffin, can be improved well
This situation.
At this stage, pump driving fluid circuit technology is the best techniques approach for solving the big heat dissipation capacity of spacecraft；It is driven by pumping
The working medium of dynamic big flow, higher convection transfer rate is obtained in heat collecting apparatus, big heat collection is got up.But
Resistance of the working medium in pipeline can greatly increase under big flow, can be put forward higher requirements to the lift of transfer tube, flow and raise
The increase of journey is eventually converted into being significantly increased for pump work, quality and volume；Angle based on system optimization, pump driving monophasic fluid
The pipeline in circuit is unsuitable too long, and which limits fluid circuit length.Based on this, fluid circuit is combined with phase change energy storage technology
Get up to form phase transition heat sink, first the phase transition heat sink using enhanced heat exchange get up powerful heat storage in short-term, then with small
Scale fluid circuit slowly dissipates the optimization, it can be achieved that heat management system.Phase transition heat sink is filled as intermediate energy storage and heat exchange
It sets, status also becomes important.
Invention content
For solve it is existing it is heat sink in short-term, the heat dissipation problem of periodical high power work single machine, improve prior paraffin class phase transformation
The low problem of temperature control device heat exchange efficiency, the present invention provides a kind of high-power matrix fin enhanced heat exchange phase transition heat sinks, have heat
The features such as capacity is big, heat exchange efficiency is high, easy to use, at low cost.
The purpose of the present invention is achieved through the following technical solutions：A kind of high-power matrix fin enhanced heat exchange heat of transformation
It sinks, including bottom plate, phase-change material, matrix fin, shell and phase-change material fill hole, bottom plate is formed with shell for carrying phase transformation
The seal chamber of material, and it is covered with matrix fin above bottom plate, the phase-change material fills hole and is connected with seal chamber, is used for phase transformation
Heat sink machine fills phase-change material later, and the bottom plate bottom surface is contacted with heat source, for absorbing heat from heat source, and transmitted
To phase-change material, phase-change material melts after reaching phase point temperature, and temperature remains unchanged in phase-change material melting process, can control
The warm increasing degree degree of heat source, the shell top are equipped with a cavity, a cover board are connected with above the cavity, and be equipped with one in the cavity
The fluid channel that fluid circuit is connected, the shell is equipped with the fluid inlet tubes being connected with the fluid channel, fluid goes out
Mouth pipe.The matrix fin in a rectangular parallelepiped shape, is distributed in the form of an array using the light-weight metal of high thermal conductivity coefficient as material
Above bottom plate, phase-change material is distributed in fin matrix, using the high heat conduction characteristic of the fin of distribution, increases the comprehensive of phase transition heat sink
Close thermal coefficient, the heat absorption capacity of reinforced transformation melting process；Heat sink temperature distribution evenness can be improved in fin matrix, prevents
The phase-change material of regional area gathers after melting, and spalling is heat sink.Cold fluid working medium flows in fluid circuit, and cold fluid is through overcurrent
Heat is absorbed when body channel so that phase-change material solidifies heat release, and the heat-sinking capability of reinforced transformation process of setting, fluid working substance will be warm
Amount dissipates after taking away.
Preferably, be additionally provided on the shell one it is external fill hole, for phase transition heat sink process assemble after, complete
To phase transition heat sink vacuumize process, then phase-change material is filled in phase transition heat sink.
Preferably, for the phase transition heat sink in addition to phase-change material, material therefor is the light-weight metal of high thermal conductivity coefficient.
Preferably, the phase-change material is paraffin class, molecular formula CnH2n+2, fusing point is between 5~40 DEG C.
Preferably, can access fluid circuit enhances hot dissipation efficiency, and phase transition heat sink outer surface heat loss through radiation can also be used.
Preferably, the outer shape of the bottom plate is shape that is plate or matching with heat source.
Compared with prior art, the invention has the advantages that：
On the one hand, fin matrix is done using the metal of high thermal conductivity coefficient, enhances the heat exchange inside paraffin phase change material
Journey, and density metal is small, can effectively mitigate weight in spacecraft thermal control application aspect.
On the other hand, for short-term, periodic duty but the larger single machine of power, at work, phase-change material melts fast
Speed absorbs heat and is slowly radiated by fluid circuit when single machine does not work, and phase-change material solidification works for single machine next time
It prepares.This phase transition heat sink not only can maintain single machine temperature in a certain range, but also can greatly reduce fluid circuit scale, subtract
Lighter fluid circuit weight.
Description of the drawings
Fig. 1 is a kind of outside drawing of high-power matrix fin enhanced heat exchange phase transition heat sink of the embodiment of the present invention.
Fig. 2 is a kind of internal structure schematic diagram of high-power matrix fin enhanced heat exchange phase transition heat sink of the embodiment of the present invention.
Fig. 3 is the schematic diagram of fin matrix in the embodiment of the present invention.
Fig. 4 is in the embodiment of the present invention along fluid inlet and outlet directional profile figure.
Fig. 5 is fluid channel sectional view in the embodiment of the present invention.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
As Figure 1-Figure 5, an embodiment of the present invention provides a kind of high-power matrix fin enhanced heat exchange phase transition heat sink, packets
It includes bottom plate 1, phase-change material 2, matrix fin 3, shell 4 and phase-change material and fills hole 8, bottom plate 1 is formed with shell 4 for carrying phase
Become the seal chamber of material, and 1 top of bottom plate is covered with matrix fin 3, the phase-change material fills hole 8 and is connected with seal chamber, uses
Phase-change material is filled after phase transition heat sink machines, 1 bottom surface of the bottom plate is contacted with heat source, for absorbing heat source heat
Amount, and phase-change material is passed to, 4 top of the shell is equipped with a cavity, and a cover board 5, and the cavity are connected with above the cavity
It is inside equipped with the fluid channel that a fluid circuit is connected, the shell 4 is equipped with the fluid inlet being connected with the fluid channel
Pipe 6, fluid outlet pipe 7.The matrix fin is using the light-weight metal of high thermal conductivity coefficient as material, in a rectangular parallelepiped shape, with array shape
Formula is distributed in above bottom plate, and phase-change material is distributed in fin matrix, and cold fluid working medium flows in fluid circuit, cold flow
Body absorbs heat when passing through fluid channel so that phase-change material solidifies heat release, the heat-sinking capability of reinforced transformation process of setting, fluid
Working medium dissipates after taking away heat.Be additionally provided on the shell 4 one it is external fill hole, for phase transition heat sink process assemble
After, it completes to phase transition heat sink vacuumize process, then phase-change material is filled in phase transition heat sink.
The shell of the present embodiment be the flat rectangular bodily form, specific size be 123mm × 103mm × 29.6mm, wall thickness 5mm,
It is made of aluminium alloy.
The bottom plate of the present embodiment is cuboid, and specific size is 119mm × 99mm × 23mm, and fin number is 46 × 56
Root, each root rib size are 1mm × 1mm × 20mm, are made of aluminium alloy.
The bottom plate of the present embodiment is cuboid, and specific size is 123mm × 103mm × 3mm, adopts and is formed from aluminium.
Fluid inlet and outlet is circular ring shape, internal diameter 4mm, outer diameter 6mm, and length 50mm is adopted and is formed from aluminium.
External filling tube is annular shape, and internal diameter 1mm, outer diameter 3mm, length 40mm are adopted and is formed from aluminium.
The phase-change material of the present embodiment is paraffin class, and main component molecular formula is CnH2n+2, such as 5.5 DEG C of tetradecane fusing point,
16.7 DEG C of latent heat of phase change 226kJ/kg, hexadecane fusing point, 28.0 DEG C of latent heat of phase change 237kJ/kg, octadecane fusing point, latent heat of phase change
247kJ/kg。
The present embodiment absorbs heat from heat source, and will be hot in use, phase transition heat sink bottom 1 is contacted with periodic duty heat source
Amount passes to paraffin class phase-change material 2, due to having a large amount of 3 reinforced heat conductions of fin matrix, heat from heat source to pass to phase rapidly inside 2
Become material.Phase-change material, which melts, absorbs heat.4 top connecting fluid circuit of shell, fluid enter fluid by inlet tube 6 and lead to
Road is finally flowed out by outlet 7, and phase-change material internal heat is slowly absorbed in flow process, heat is taken away, and is next time hot
Heat dissipation is prepared when source works.Fluid channel is sealed by cover board 5.Phase-change material filling process is implemented by filling mouth 8.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (8)
1. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink, which is characterized in that including bottom plate (1), phase-change material (2),
Matrix fin (3), shell (4) and phase-change material fill hole (8), and bottom plate (1) is formed with shell (4) for carrying phase-change material
Seal chamber, and it is covered with matrix fin (3) above bottom plate (1), the phase-change material fills hole (8) and is connected with seal chamber, is used for
Phase transition heat sink fills phase-change material after machining, and bottom plate (1) bottom surface is contacted with heat source, for absorbing heat source heat
Amount, and phase-change material is passed to, it is equipped with a cavity above the shell (4), a cover board (5) is connected with above the cavity, and should
The fluid channel being connected equipped with a fluid circuit in cavity, the shell (4) are equipped with the stream being connected with the fluid channel
Body inlet tube (6), fluid outlet pipe (7).
2. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that described
Matrix fin is using the light-weight metal of high thermal conductivity coefficient as material, in a rectangular parallelepiped shape, is distributed in the form of an array above bottom plate,
Phase-change material is distributed in fin matrix.
3. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that cold flow
Body working medium flows in fluid circuit, and cold fluid absorbs heat when passing through fluid channel so that phase-change material solidifies heat release, strengthens
The heat-sinking capability of phase transformation process of setting, fluid working substance dissipate after taking away heat.
4. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that described
Be additionally provided on shell (4) one it is external fill hole, for phase transition heat sink process assemble after, completion phase transition heat sink is vacuumized
Processing, then phase-change material is filled in phase transition heat sink.
5. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that described
For phase transition heat sink in addition to phase-change material, material therefor is the light-weight metal of high thermal conductivity coefficient.
6. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that described
Phase-change material is paraffin class, molecular formula CnH2n+2, fusing point is between 5~40 DEG C.
7. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that can connect
Entering fluid circuit enhances hot dissipation efficiency, and phase transition heat sink outer surface heat loss through radiation can also be used.
8. a kind of high-power matrix fin enhanced heat exchange phase transition heat sink according to claim 1, which is characterized in that described
The outer shape of bottom plate (1) is shape that is plate or matching with heat source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810202216.4A CN108601288B (en) | 2018-03-12 | 2018-03-12 | High-power matrix fin enhanced heat exchange phase change heat sink |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810202216.4A CN108601288B (en) | 2018-03-12 | 2018-03-12 | High-power matrix fin enhanced heat exchange phase change heat sink |
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| CN108601288A true CN108601288A (en) | 2018-09-28 |
| CN108601288B CN108601288B (en) | 2020-10-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110065646A (en) * | 2019-04-30 | 2019-07-30 | 东南大学 | The carrier-borne blast screen of heat of transformation buffer-type |
| CN111234781A (en) * | 2020-01-19 | 2020-06-05 | 广州视源电子科技股份有限公司 | Heat-conducting and heat-storing phase change plate and preparation method thereof |
| CN114148550A (en) * | 2021-11-30 | 2022-03-08 | 长光卫星技术有限公司 | Integrated flexible energy storage heat dissipation device for satellite |
| CN114302514A (en) * | 2021-12-27 | 2022-04-08 | 哈尔滨工业大学 | Electrothermal coupling temperature control device integrated with cross-type double-pin-plate heat sink and temperature control method thereof |
| WO2023279759A1 (en) * | 2021-07-09 | 2023-01-12 | 中兴通讯股份有限公司 | Heat dissipation device and communication device |
| CN116038166A (en) * | 2023-03-31 | 2023-05-02 | 河北宇天材料科技有限公司 | Composite uniform-temperature water cooling structure based on welding and manufacturing method thereof |
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| US20080128116A1 (en) * | 2003-08-25 | 2008-06-05 | Carlos Dangelo | Vapor chamber heat sink having a carbon nanotube fluid interface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110065646A (en) * | 2019-04-30 | 2019-07-30 | 东南大学 | The carrier-borne blast screen of heat of transformation buffer-type |
| CN111234781A (en) * | 2020-01-19 | 2020-06-05 | 广州视源电子科技股份有限公司 | Heat-conducting and heat-storing phase change plate and preparation method thereof |
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| CN114148550A (en) * | 2021-11-30 | 2022-03-08 | 长光卫星技术有限公司 | Integrated flexible energy storage heat dissipation device for satellite |
| CN114302514A (en) * | 2021-12-27 | 2022-04-08 | 哈尔滨工业大学 | Electrothermal coupling temperature control device integrated with cross-type double-pin-plate heat sink and temperature control method thereof |
| CN114302514B (en) * | 2021-12-27 | 2022-09-27 | 哈尔滨工业大学 | Electrothermal coupling temperature control device integrated with cross-type double-pin-plate heat sink and temperature control method thereof |
| CN116038166A (en) * | 2023-03-31 | 2023-05-02 | 河北宇天材料科技有限公司 | Composite uniform-temperature water cooling structure based on welding and manufacturing method thereof |
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| CN108601288B (en) | 2020-10-09 |
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