CN106403672A - Segmented ultra-thin phase-change heat tube and preparation method thereof - Google Patents
Segmented ultra-thin phase-change heat tube and preparation method thereof Download PDFInfo
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- CN106403672A CN106403672A CN201611047024.8A CN201611047024A CN106403672A CN 106403672 A CN106403672 A CN 106403672A CN 201611047024 A CN201611047024 A CN 201611047024A CN 106403672 A CN106403672 A CN 106403672A
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- Prior art keywords
- ultra
- heat pipe
- thin
- phase transformation
- thin phase
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Classifications
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- 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
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
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- 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 segmented ultra-thin phase-change heat tube and a preparation method thereof. The segmented ultra-thin phase-change heat tube is formed by welding or adhering at least two layers of ultra-thin phase-change heat tube bodies with the same structures, and each ultra-thin phase-change heat tube body comprises a tube shell with a closed cavity, a liquid absorbing core adhered to the inner side of the tube shell and a solid-state phase-change working medium arranged between the inner side of the tube shell and the liquid absorbing core. The segmented ultra-thin phase-change heat tube has excellent heat-conduction performance, and can meet requirements of lightness and thinness of electronic equipment; because the segmented ultra-thin phase-change heat tube has at least two layers of structures, different layers are filled with working media in different temperature regions, the working temperature of the filled working media can reach -60 DEG C to 1,800 DEG C, and the working temperature range of the heat tube can be increased. By the method, the working media are creatively condensed into solid working media, then the solid working media are filled, the amount of the working media is accurate during vacuumizing, the method is simple and convenient, the yield is greatly improved, and production cost is reduced.
Description
Technical field
The invention belongs to hot pipe technique field, ultra-thin phase transformation heat pipe of more particularly to a kind of segmentation and preparation method thereof.
Background technology
Developing rapidly with information industry, electronic product is constantly developed towards high performance with lightening direction, by
This causes a series of heat dissipation problem, if the high heat that electronic equipment produces fails to disperse in time, will have a strong impact on electronic equipment
Stability and reliability, high heat flux problem become restriction electron trade development critical limiting factor.
Ultrathin heat pipe is the new heat pipe manufacturing to adapt to the narrow and small heat-dissipating space of light and thin type electronic equipment.In existing skill
In art, the manufacture method of ultrathin heat pipe haves the shortcomings that complex process, production cost are high.And although the thermal resistance of ultrathin heat pipe
Very little, but the interfacial property of heat pipe is very poor, has very big thermal contact resistance with thermal source it is impossible to well by heat from heat when contacting
Source is delivered to heat pipe, thus affecting to radiate.
In addition, in prior art, the manufacture method of phase transformation heat pipe typically adopts vacuum filling or first fluid injection evacuation again
Method.Method using vacuum filling is by heat pipe evacuation, again fluid injection, there is complex interfaces, yield rate in this way
The low problem with inefficiency；And using first fluid injection, the method for evacuation is by evacuation again after heat pipe fluid injection, fluid injection again, adopt
The liquid measure that there is injection in this way controls inaccurate problem, thus can produce a large amount of scrap aborning, increases life
Produce cost.
Content of the invention
Based on this, in order to overcome the defect of above-mentioned prior art, the invention provides a kind of segmentation ultra-thin phase transformation heat pipe and
Its preparation method, this segmentation ultra-thin heat of transformation pipe has the advantages that thickness of thin, thermal contact resistance be little, good heat conductivity.
In order to realize foregoing invention purpose, this invention takes technical scheme below：
A kind of ultra-thin phase transformation heat pipe of segmentation, the ultra-thin phase transformation heat pipe of described segmentation is by least ultra-thin phase transformation of double-layer structure identical
Heat pipe welds or pastes and forms, and described ultra-thin phase transformation heat pipe includes having the shell of closed cavity, sticks in inside described shell
Wick and be arranged at the solid-state phase changes working medium and described wick between inside described shell.
Wherein in some embodiments, described solid-state phase changes working medium be solid-state ammonia, freon, water, ethanol, benzene, biphenyl,
Hydrargyrum, potassium, sodium or lithium.
Wherein in some embodiments, the material of the described shell with closed cavity is 0.01mm-0.1mm for thickness
Tinsel or non-metal plate.
Wherein in some embodiments, described tinsel is Copper Foil, aluminium foil or stainless steel thin slice.
Wherein in some embodiments, described wick is the wire netting of 0.01-0.1mm or non-woven fabrics for thickness.
Present invention also offers the preparation method of the ultra-thin phase transformation heat pipe of above-mentioned segmentation, comprise the following steps：
Step one, in the constant temperature working area less than working medium solidification temperature, makes working medium be frozen into solid-state, obtains solid-state phase and exchange work
Matter；
Step 2, according to the size of target thermal source, tinsel ultra-thin for two panels or nonmetallic slices is cut into and institute
State the size that target thermal source is fully contacted, the two panels tinsel after cutting or nonmetallic slices are laminated, in two panels metal
Place a piece of wick in the middle of paillon foil or nonmetallic slices, and by side edge sealing, leave side and do not seal；
Step 3, in constant temperature working area, puts into solid-state phase changes working medium through unsealed side；
Step 4, in constant temperature working area, carries out evacuation process, more unsealed side is sealed, and one layer of formation is ultra-thin
Phase transformation heat pipe；
Step 5, repeats above step and makes multiple ultra-thin phase transformation heat pipes, more multiple ultra-thin heat of transformation Gutron are crossed welding
Or laminating is bonded together, the ultra-thin phase transformation heat pipe of prepared segmentation.
Compared with prior art, the invention has the advantages that：
1st, the segmentation of the present invention ultra-thin phase transformation heat pipe make full use of ultra-thin tinsel or nonmetallic slices ductility,
Pliability and scalability, when heat pipe is heated, the working medium supercharging of gasification is so that tinsel or nonmetallic slices expand, swollen
Tinsel after swollen or nonmetallic slices can make heat pipe more effectively be in close contact with thermal source interface, thus reducing contact heat
Heat can be delivered to heat pipe from heat source side, have more excellent heat conductivility, disclosure satisfy that electronic equipment is frivolous by resistance well
The requirement changed；
2nd, the segmentation of the present invention ultra-thin phase transformation heat pipe is interval due to having at least double-layer structure, different layers filling different temperatures
Working medium, the operating temperature of filled working medium up to -60 DEG C～1800 DEG C it is thus possible to increase heat pipe operating temperature range；
3rd, the preparation method of the segmentation of the present invention ultra-thin phase transformation heat pipe, simple and reliable process, compares traditional vacuum filling
Or the method for first fluid injection evacuation again, solid-state that what the method for the invention was creative be condensed into working medium filled again so that
During evacuation, accurately, method is easy, substantially increases yield rate, reduces production cost for working medium dosage.
Brief description
Fig. 1 is the flow chart of the preparation method of segmentation ultra-thin phase transformation heat pipe of the embodiment of the present invention 1；
Fig. 2 is the Longitudinal cross section schematic of the ultra-thin phase transformation heat pipe (monolayer) of the embodiment of the present invention 1；
Fig. 3 is the Longitudinal cross section schematic of the segmentation ultra-thin phase transformation heat pipe (two-layer) of the embodiment of the present invention 1；
Reference：1 shell；2 wick；3 solid-state phase changes working medium；The ultra-thin heat of transformation in 4 upper stratas
Pipe；5 lower floors ultra-thin phase transformation heat pipe；The ultra-thin phase transformation in 41 upper stratas heat pipe package；The ultra-thin phase transformation in 42 upper stratas heat pipe is inhaled
Wick-containing；The ultra-thin phase transformation in 43 upper stratas heat-pipe working medium；51 lower floors ultra-thin phase transformation heat pipe package；The ultra-thin phase transformation of 52 lower floors
Heat pipe wicks；53 lower floors ultra-thin phase transformation heat-pipe working medium.
Specific embodiment
It is further discussed below the present invention below in conjunction with the accompanying drawings with specific embodiment, the present invention does not address part and is applied to existing skill
Art.The specific embodiment of the present invention is given below, but embodiment, merely to being described in further detail this explanation, is not intended to limit this
The claim of invention.
Embodiment 1 segmentation ultra-thin phase transformation heat pipe
The segmentation ultra-thin heat of transformation pipe of the present embodiment has double-layer structure, refers to Fig. 2 and Fig. 3, respectively segmentation is ultra-thin
The monolayer of phase transformation heat pipe and double-deck Longitudinal cross section schematic, it is upper that the ultra-thin phase transformation heat pipe of described segmentation includes welding or paste
Lower two-layer phase transformation heat pipe, bilevel structure is identical, all includes having the shell 1 of closed cavity, sticks in described shell 1
The wick 2 of side and be arranged at the solid-state phase changes working medium 3 between described shell 1 inner side and described wick 2.
The ultra-thin phase transformation in upper strata heat pipe 4 include having closed cavity the ultra-thin phase transformation in upper strata heat pipe package 41, stick in described
The ultra-thin phase transformation in upper strata heat pipe wicks 42 of the ultra-thin phase transformation in upper strata heat pipe package 41 inner side and be arranged at the ultra-thin phase in described upper strata
Become the ultra-thin phase transformation in the upper strata heat-pipe working medium 43 between heat pipe package 41 inner side and the ultra-thin phase transformation in described upper strata heat pipe wicks 42.
Lower floor's ultra-thin phase transformation heat pipe 5 include having closed cavity lower floor's ultra-thin phase transformation heat pipe package 51, stick in described
Lower floor's ultra-thin phase transformation heat pipe wicks 52 of lower floor's ultra-thin phase transformation heat pipe package 51 inner side and be arranged at the ultra-thin phase of described lower floor
Become the lower floor's ultra-thin phase transformation heat-pipe working medium 53 between heat pipe package 51 inner side and described lower floor ultra-thin phase transformation heat pipe wicks 52.
In this embodiment, the shell of the ultra-thin phase transformation heat pipe of described upper and lower two-layer is aluminium foil, and its thickness is 0.1mm, institute
The wick stating upper and lower two-layer ultra-thin phase transformation heat pipe is non-woven fabrics.The ultra-thin phase transformation in described upper strata heat pipe solid-state phase changes working medium is
Ammonia, its operating temperature is -60 DEG C～100 DEG C；The solid-state phase changes working medium of the ultra-thin phase transformation heat pipe of described lower floor is acetone, its work temperature
Spend for 0 DEG C～120 DEG C.
Refer to Fig. 1, be the preparation method of the segmentation ultra-thin phase transformation heat pipe described in the present embodiment, it includes following work successively
Skill step：
1) prepare solid-state phase changes working medium ammonia：Weigh quantitative solid-state ammonia working medium, the temperature of constant temperature working area in constant temperature working area
Degree≤- 77 DEG C；
2) choose the aluminium foil that two panels thickness is 0.1mm, be cut into the square dimensions of 50mm × 50mm, then cut out
The non-woven fabrics of same size, the two panels laminate aluminium foil after cutting, centre stacks non-woven fabrics, and side is sealed, and leaves one
Side is not sealed；
3) in constant temperature working area, by step 1) in the solid-state ammonia working medium that obtains be positioned over step 2) in the lamination that obtains；
4) in constant temperature working area, using air pump, evacuation is carried out to lamination, will continuously take out during evacuation, must not pause,
After taking out, the outlet with the vacuum tightness cavity of solid-state phase changes working medium is sealed, forms one layer of ultra-thin phase transformation heat pipe；
5) prepare solid-state phase changes working medium acetone：Weigh quantitative solid-state deionized water, constant temperature working area in constant temperature working area
Temperature≤- 95 DEG C；
6) choose the aluminium foil that two panels thickness is 0.1mm, be cut into the square dimensions of 50mm × 50mm, then cut out
The non-woven fabrics of same size, the two panels laminate aluminium foil after cutting, centre stacks non-woven fabrics, and side is sealed, and leaves one
Side is not sealed；
7) in constant temperature working area, by step 5) in the solid-state phase changes working medium ice that obtains be positioned over step 6) lamination that obtains
In；
8) in constant temperature working area, using air pump, evacuation is carried out to lamination, will continuously take out during evacuation, must not pause,
After taking out, the outlet with the vacuum tightness cavity of solid-state phase changes working medium is sealed, forms one layer of ultra-thin phase transformation heat pipe；
9) tightness tester is used to check the sealing of two-layer ultra-thin phase transformation heat pipe achieved above it is ensured that sealing is good
Good；
10) two-layer ultra-thin heat of transformation Gutron achieved above is crossed welding to be bonded together, prepared ammonia-acetone segmentation is ultra-thin
Phase transformation heat pipe.
Embodiment 2 segmentation ultra-thin phase transformation heat pipe
The segmentation ultra-thin phase transformation heat pipe of the present embodiment except ultra-thin phase transformation heat pipe package adopt graphite flake in addition to, other all with reality
Apply example 1 identical.
Embodiment 3 segmentation ultra-thin phase transformation heat pipe
The segmentation ultra-thin phase transformation heat pipe of the present embodiment except heat pipe package thickness be 0.05mm in addition to, other all with embodiment 1
Identical.
Embodiment 4 segmentation ultra-thin phase transformation heat pipe
The segmentation ultra-thin phase transformation heat pipe of the present embodiment adopts ammonia except upper strata heat-pipe working medium, and lower floor's heat-pipe working medium adopts ethanol
Outward, other are all same as Example 1.
The segmentation ultra-thin phase transformation heat pipe of test example 1 present invention is contrasted with the heat dispersion of common flat hot pipe
Heat conduction and heat radiation survey is carried out simultaneously to the segmentation ultra-thin phase transformation heat pipe of common flat hot pipe and the embodiment of the present invention 1
Examination, when heat dissipation capacity is 5W, the radiating temperature difference at ordinary flat heat pipe two ends is substantially at 5 DEG C about, and the segmentation of the embodiment of the present invention 1
The ultra-thin phase transformation heat pipe heat radiation temperature difference can reach 3-4 DEG C, and heat-conducting effect increases, thus good heat dissipation effect.
The segmentation ultra-thin phase transformation heat pipe of test example 2 present invention is contrasted with the processing characteristics of common flat hot pipe
Although common flat hot pipe radiating effect is preferably, processing technique is complicated, long processing time, high cost.One
As flat hot pipe processing percent defective be up to 80%, process time, flow process was up to 3 days.
And the segmentation ultra-thin heat of transformation pipe processing technique of the embodiment of the present invention 1 is simple, general percent defective only has 20%-
30%, a segmentation ultra-thin phase transformation heat pipe overall processing flow time only has several hours.Work flow shortens, and yield rate carries
Height, cost substantially reduces.
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic applied in example is all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope of this specification record.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (6)
1. a kind of ultra-thin phase transformation heat pipe of segmentation is it is characterised in that described segmentation ultra-thin phase transformation heat pipe is identical by least double-layer structure
Ultra-thin heat of transformation sealing of tube or paste form, described ultra-thin phase transformation heat pipe includes having the shell of closed cavity, sticks in institute
State the wick inside shell and be arranged at the solid-state phase changes working medium and described wick between inside described shell.
2. the ultra-thin phase transformation heat pipe of segmentation according to claim 1 is it is characterised in that described solid-state phase changes working medium is solid-state
Ammonia, freon, water, ethanol, benzene, biphenyl, hydrargyrum, potassium, sodium or lithium.
3. the ultra-thin phase transformation heat pipe of segmentation according to claim 1 is it is characterised in that the described shell with closed cavity
Material is tinsel or non-metal plate that thickness is 0.01mm-0.1mm.
4. the ultra-thin phase transformation heat pipe of segmentation according to claim 3 is it is characterised in that described tinsel is Copper Foil, aluminium foil
Or stainless steel thin slice.
5. the ultra-thin phase transformation heat pipe of segmentation according to claim 1 is it is characterised in that described wick is 0.01- for thickness
The wire netting of 0.1mm or non-woven fabrics.
6. the preparation method of the ultra-thin phase transformation of the segmentation described in any one of Claims 1 to 5 heat pipe is it is characterised in that include following
Step：
Step one, in the constant temperature working area less than working medium solidification temperature, makes working medium be frozen into solid-state, obtains solid-state phase changes working medium；
Step 2, according to the size of target thermal source, tinsel ultra-thin for two panels or nonmetallic slices is cut into and described mesh
The size that mark thermal source is fully contacted, the two panels tinsel after cutting or nonmetallic slices stacking, in two panels tinsel
Or place a piece of wick in the middle of nonmetallic slices, and by side edge sealing, leave side and do not seal；
Step 3, in constant temperature working area, puts into solid-state phase changes working medium through unsealed side；
Step 4, in constant temperature working area, carries out evacuation process, more unsealed side is sealed, and forms one layer of ultra-thin phase transformation
Heat pipe；
Step 5, repeats above step and makes multiple ultra-thin phase transformation heat pipes, more multiple ultra-thin heat of transformation Gutron is crossed welding or pastes
Conjunction is bonded together, the ultra-thin phase transformation heat pipe of prepared segmentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047024.8A CN106403672A (en) | 2016-11-23 | 2016-11-23 | Segmented ultra-thin phase-change heat tube and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047024.8A CN106403672A (en) | 2016-11-23 | 2016-11-23 | Segmented ultra-thin phase-change heat tube and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106403672A true CN106403672A (en) | 2017-02-15 |
Family
ID=58082651
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| CN201611047024.8A Pending CN106403672A (en) | 2016-11-23 | 2016-11-23 | Segmented ultra-thin phase-change heat tube and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749220A (en) * | 2018-07-23 | 2020-02-04 | 新光电气工业株式会社 | Loop heat pipe |
| CN112120287A (en) * | 2019-06-25 | 2020-12-25 | 湖南中烟工业有限责任公司 | Low-temperature smoking set with heat insulation structure |
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| CN103105083A (en) * | 2013-02-28 | 2013-05-15 | 张波 | Solid-state quantitative infusion method of heat working media |
| CN105698581A (en) * | 2015-12-14 | 2016-06-22 | 上海利正卫星应用技术有限公司 | Light, thin and pressing-resistant flat heat pipe with high installation adaptability |
| CN106017176A (en) * | 2016-07-18 | 2016-10-12 | 华南理工大学 | Ultrathin heat pipe for heat dissipation of mobile phone and manufacturing method thereof |
| CN206222987U (en) * | 2016-11-23 | 2017-06-06 | 广东合一新材料研究院有限公司 | It is segmented ultra-thin phase transformation heat pipe |
-
2016
- 2016-11-23 CN CN201611047024.8A patent/CN106403672A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928484A (en) * | 2005-09-05 | 2007-03-14 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe and method for manufacturing same |
| CN103105083A (en) * | 2013-02-28 | 2013-05-15 | 张波 | Solid-state quantitative infusion method of heat working media |
| CN105698581A (en) * | 2015-12-14 | 2016-06-22 | 上海利正卫星应用技术有限公司 | Light, thin and pressing-resistant flat heat pipe with high installation adaptability |
| CN106017176A (en) * | 2016-07-18 | 2016-10-12 | 华南理工大学 | Ultrathin heat pipe for heat dissipation of mobile phone and manufacturing method thereof |
| CN206222987U (en) * | 2016-11-23 | 2017-06-06 | 广东合一新材料研究院有限公司 | It is segmented ultra-thin phase transformation heat pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749220A (en) * | 2018-07-23 | 2020-02-04 | 新光电气工业株式会社 | Loop heat pipe |
| CN112120287A (en) * | 2019-06-25 | 2020-12-25 | 湖南中烟工业有限责任公司 | Low-temperature smoking set with heat insulation structure |
| CN112120287B (en) * | 2019-06-25 | 2024-05-14 | 湖南中烟工业有限责任公司 | Low-temperature smoking set with heat insulation structure |
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Application publication date: 20170215 |