CN109405610A - A kind of wick structure and preparation method thereof - Google Patents
A kind of wick structure and preparation method thereof Download PDFInfo
- Publication number
- CN109405610A CN109405610A CN201811431617.3A CN201811431617A CN109405610A CN 109405610 A CN109405610 A CN 109405610A CN 201811431617 A CN201811431617 A CN 201811431617A CN 109405610 A CN109405610 A CN 109405610A
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- China
- Prior art keywords
- groove
- wick structure
- wick
- substrate
- preparation
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims abstract description 3
- 239000000523 sample Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000009835 boiling Methods 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a kind of wick structure preparation methods, comprising steps of processing groove structure arranged in parallel in metallic substrate surfaces；Using the liquid-containing air etched groove rooved face with ultrasonic activation, the microcellular structure of random distribution is formed.The invention also discloses a kind of wick structures, and including groove structure arranged in parallel on metal substrate and substrate, the micropore of countless random distributions is formed on the surface of groove structure.Wick structure direct forming of the invention can effectively enhance the capillary attraction to working medium in flute surfaces, increase wetting areas, provide more nucleus of boiling sites, and structure has excellent shock resistance.It can promote the quick backflow for condensing working medium applied to flat-plate heat pipe and boil again, enhance the stability under the heat transfer property and vibration operating condition of flat-plate heat pipe.
Description
Technical field
The present invention relates to flat-plate heat pipe manufacturing technology field, in particular to the strong porous groove capillary wick of a kind of anti-vibration resistance
Structure and preparation method.
Background technique
With the development of electronic technology, heat pipe becomes the primary hand for solving the problems, such as high density hot-fluid electronic device thermal control
Section has many advantages, such as that thermal conductivity is high, uniform temperature is good, transmission range is longer, the service life is high.Heat pipe capillary cored structure is to condense in heat pipe
Working medium reflux provides major impetus, while providing bigger heat transfer area and more boiling core sites for the boiling of working medium,
The excellent heat transfer property of opposite heat tube has considerable meaning.Size with electronic component is constantly reducing, working frequency
Higher and higher, integration degree is continuously increased, and flat-plate heat pipe becomes the pass for solving the problems, such as dissipation from electronic devices in the confined space
Key technology, and it is applied to the special dimensions such as rail traffic, space flight and aviation.
For flat-plate heat pipe, common wick structure principal mode has groove, silk screen and powder sintered.And it is handed in track
The special dimensions such as logical, space flight and aviation propose higher technical requirements to flat-plate heat pipe wick structure, are having excellent heat transfer
Should more have preferable anti-shake performance under conditions of performance.In common wick structure, by powder or silk screen sintering
At wick structure easily loosen or fall off because of vibration, loosen and will increase the thermal contact resistance of wall surface and capillary wick, fall off and understood
It is complete to lose capillary performance, cause heat pipe entirely ineffective, therefore, groove wick structure of the direct forming on wall surface, which becomes, to be applicable in
In the mainstream structure of the flat-plate heat pipe of the special dimensions such as rail traffic, space flight and aviation.However, compared with other wick structures
Compared with, traditional groove wick structure usually because surface is relatively smooth, and there are capillary performance is poor, nucleus of boiling site is equal less to be lacked
Point causes evaporator section under high heat flux density to be easy to be evaporated, and the coefficient of heat transfer is lower, and overall thermal resistance is larger, the heat power of heat pipe compared with
The problems such as low.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology with it is insufficient, a kind of wick structure and its preparation side are provided
Method, this structure and method can realize that porous structure in the direct forming of flute surfaces, there is enhancing capillary attraction, enhanced water evaporation to change
The advantages that hot and stronger anti-vibration resistance.
The purpose of the present invention is realized by the following technical solution: a kind of wick structure preparation method, including is walked as follows
It is rapid:
S1, groove structure arranged in parallel is processed in metallic substrate surfaces；
S2, using the liquid-containing air etched groove rooved face with ultrasonic activation, form the microcellular structure of random distribution.
Preferably, in step S1, groove structure is processed by machining process.
Further, the method for the machining is milling or wire cutting or plough is cut or extrusion forming.
Preferably, in step S2, the metal substrate completed the process is fixed on to the container bottom for filling liquid, groove structure
Upward and liquid level is higher than groove top surface, and the gap of ultrasonic probe and the top of the groove is adjusted by digital control platform, starts ultrasonic wave
Probe is controlled ultrasonic probe and is slowly moved along groove direction with certain frequency and amplitude vibration, flute surfaces cavitation corrosion go out with
The microcellular structure of machine distribution.
Further, the liquid levels are > 10mm at a distance from groove top surface, to guarantee that ultrasonic probe is immersed in
In liquid.
Further, the gap of the ultrasonic probe and the top of the groove is 0.3-0.7mm.
Further, the vibration frequency is 20kHz or 25kHz.
Further, the amplitude is 50-150 μm.
Further, the average speed slowly moved is 0.7-1.8mm/min.
A kind of wick structure, including groove structure arranged in parallel on metal substrate and substrate, the surface of groove structure
On be formed with the micropores of countless random distributions, porous structure had both promoted capillary attraction or had increased the nucleus of boiling site on surface.
Preferably, the material of the metal substrate is red copper or aluminium.
Preferably, the groove depth is 0.3-0.7mm, groove width 0.2-0.5mm, separation 0.3-0.7mm.
Preferably, the equivalent diameter of the micropore of the flute surfaces is 10-30 μm.
Compared with prior art, the present invention has the following advantages and effect:
1, wick structure of the invention forms the micropore of countless random distributions on groove, can enhance groove to working medium
Capillary attraction, promote condensation working medium quick backflow in the trench.
2, flute surfaces of the invention forming um porous structure can dramatically increase evaporator section nucleus of boiling number, have and increase
Strong film evaporation and nucleate boiling effect.
3, the preparation method of wick structure of the invention is simple and efficient, porous structure groove surface direct forming,
It is not easy to loosen or fall off because of vibration, shock resistance is good and reliable performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of wick structure of the present invention.
Fig. 2 is the schematic cross-section of wick structure of the present invention.
Fig. 3 is the processing unit (plant) schematic diagram of wick structure of the embodiment of the present invention.
Wherein: 1- red copper substrate；2- groove structure；3- micropore；4- ultrasonic transducer；5- fixture；6- ultrasonic probe；
The container of 7- dress pure water；8- digital control platform.
Specific embodiment
For a better understanding of the technical solution of the present invention, the implementation that the present invention is described in detail provides with reference to the accompanying drawing
Example, embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Figs. 1-2, a kind of wick structure, including red copper substrate 1 are provided with ditch arranged in parallel on red copper substrate
Slot structure 2 is formed with the micropore 3 of countless random distributions on the surface of groove structure.Groove depth is 0.3mm, groove width 0.2mm, slot
Spacing is 0.5mm, and the equivalent diameter of flute surfaces micropore is 10-30 μm.
The present invention makes groove also have porous structure, and this porous being directly formed at flute surfaces, with sintering
It is stronger compared to anti-vibration resistance, and capillary performance is stronger compared with pure groove.
The manufacturing method of above-mentioned wick structure, includes the following steps:
S1, groove structure arranged in parallel, and cleaning, drying are processed in red copper substrate surface using the method for wire cutting；
S2,7 bottom of container that the red copper substrate completed the process is fixed on to dress pure water, groove structure is upward and pure water
Liquid level is higher than groove top surface, and pure water level is 15mm at a distance from groove top surface；
S3, the gap of ultrasonic probe and the top of the groove is adjusted as 0.3mm by digital control platform 8, starts ultrasonic wave transducer
The ultrasonic probe 6 of device 4 with the frequency of 20kHz and 50 μm of amplitude vibration, control ultrasonic probe along groove direction with
The average speed of 1.8mm/min slowly moves, and goes out the microcellular structure of random distribution in flute surfaces cavitation corrosion.
Embodiment 2
A kind of porous groove wick structure, including an aluminum substrate are provided with groove structure arranged in parallel on aluminum substrate,
The micropore of countless random distributions is formed on the surface of groove structure.Groove depth is 0.7mm, groove width 0.5mm, and separation is
0.7mm, the equivalent diameter of flute surfaces micropore are 10-30 μm.
The manufacturing method of above-mentioned porous groove wick structure, includes the following steps:
S1, groove structure arranged in parallel, and cleaning, drying are processed in aluminium base plate surface using the method for Milling Process；
S2, the container bottom that the aluminum substrate completed the process is fixed on to dress pure water, groove structure is upward and pure aqueous
Face is higher than groove top surface, and pure water level is 15mm at a distance from groove top surface；
S3, the gap that ultrasonic probe and the top of the groove are adjusted by digital control platform are 0.5mm, start ultrasonic probe with
The frequency of 20kHz and 150 μm of amplitude vibration, control ultrasonic probe are slow with the average speed of 0.7mm/min along groove direction
It is slow mobile, go out the microcellular structure of random distribution in flute surfaces cavitation corrosion.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. a kind of wick structure preparation method, which comprises the steps of:
S1, groove structure arranged in parallel is processed in metallic substrate surfaces；
S2, using the liquid-containing air etched groove rooved face with ultrasonic activation, form the microcellular structure of random distribution.
2. wick structure preparation method according to claim 1, which is characterized in that in step S1, pass through machining
Method processes groove structure.
3. according to wick structure preparation method as claimed in claim 2, which is characterized in that the method for the machining is milling
Or wire cutting or plough are cut or extrusion forming.
4. according to wick structure preparation method described in claim 1, which is characterized in that in step S2, the gold that will complete the process
Belong to substrate and be fixed on the container bottom for filling liquid, groove structure is upward and liquid level is higher than groove top surface, passes through digital control platform tune
The gap of ultrasonic probe and the top of the groove is saved, starts ultrasonic probe with certain frequency and amplitude vibration, controls ultrasonic wave and visit
Head is slowly moved along groove direction, goes out the microcellular structure of random distribution in flute surfaces cavitation corrosion.
5. wick structure preparation method according to claim 4, which is characterized in that the liquid levels and groove top surface
Distance be > 10mm；The gap of the ultrasonic probe and the top of the groove is 0.3-0.7mm, and the vibration frequency is 20kHz
Or 25kHz, the amplitude are 50-150 μm, the average speed slowly moved is 0.7-1.8mm/min.
6. a kind of wick structure, which is characterized in that including groove structure arranged in parallel on metal substrate and substrate, groove knot
The micropore of countless random distributions is formed on the surface of structure.
7. wick structure according to claim 6, which is characterized in that the material of the metal substrate is red copper or aluminium.
8. wick structure according to claim 6, which is characterized in that the groove depth is 0.3-0.7mm, groove width 0.2-
0.5mm, separation 0.3-0.7mm.
9. wick structure according to claim 6, which is characterized in that the equivalent diameter of the micropore of the flute surfaces is
10-30μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431617.3A CN109405610A (en) | 2018-11-27 | 2018-11-27 | A kind of wick structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431617.3A CN109405610A (en) | 2018-11-27 | 2018-11-27 | A kind of wick structure and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109405610A true CN109405610A (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811431617.3A Pending CN109405610A (en) | 2018-11-27 | 2018-11-27 | A kind of wick structure and preparation method thereof |
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| Country | Link |
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| CN (1) | CN109405610A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106943A (en) * | 2019-05-13 | 2019-08-09 | 山东大学 | A kind of air fresh water device for making and its loop circuit heat pipe |
| CN110948182A (en) * | 2019-11-11 | 2020-04-03 | 中国航天空气动力技术研究院 | Method for forming refractory metal capillary core |
| WO2023193704A1 (en) * | 2022-04-07 | 2023-10-12 | 燕山大学 | Metal having microporous structure on surface, and preparation method therefor and application thereof |
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| CN105880956A (en) * | 2016-06-16 | 2016-08-24 | 厦门大学 | Microchannel heat exchanger with porous bottom face of micro-pore structures and manufacturing method of microchannel heat exchanger |
| CN106440898A (en) * | 2016-10-13 | 2017-02-22 | 广东工业大学 | Flat heat pipe composited groove type fluid suction core and preparation method thereof |
| CN107660102A (en) * | 2017-09-14 | 2018-02-02 | 南京理工大学 | Conduit nano flower composite wick structure and preparation method thereof |
| CN108362149A (en) * | 2018-02-05 | 2018-08-03 | 厦门大学 | The manufacturing method of micro channel heat exchange plate with multiple dimensioned surface texture featur |
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2018
- 2018-11-27 CN CN201811431617.3A patent/CN109405610A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225976A (en) * | 2013-04-23 | 2013-07-31 | 华南理工大学 | Method for increasing suction force of capillary core in groove heat pipe |
| CN104001747A (en) * | 2014-05-22 | 2014-08-27 | 华南理工大学 | Ultrasonic surface roughening micro groove group extrusion molding device |
| CN104191156A (en) * | 2014-09-12 | 2014-12-10 | 哈尔滨工业大学 | Method for using ultrasonic cavitation to machine panel surface micro-pits |
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| CN106440898A (en) * | 2016-10-13 | 2017-02-22 | 广东工业大学 | Flat heat pipe composited groove type fluid suction core and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106943A (en) * | 2019-05-13 | 2019-08-09 | 山东大学 | A kind of air fresh water device for making and its loop circuit heat pipe |
| CN110948182A (en) * | 2019-11-11 | 2020-04-03 | 中国航天空气动力技术研究院 | Method for forming refractory metal capillary core |
| WO2023193704A1 (en) * | 2022-04-07 | 2023-10-12 | 燕山大学 | Metal having microporous structure on surface, and preparation method therefor and application thereof |
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Application publication date: 20190301 |
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