CN106940146A - A kind of composite ultrathin flexible plane heat pipe - Google Patents
A kind of composite ultrathin flexible plane heat pipe Download PDFInfo
- Publication number
- CN106940146A CN106940146A CN201710166648.XA CN201710166648A CN106940146A CN 106940146 A CN106940146 A CN 106940146A CN 201710166648 A CN201710166648 A CN 201710166648A CN 106940146 A CN106940146 A CN 106940146A
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- CN
- China
- Prior art keywords
- plastics
- conduit
- heat pipe
- micro
- plane heat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- F28D15/0233—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 the conduits having a particular shape, e.g. non-circular cross-section, annular
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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)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of composite ultrathin flexible plane heat pipe, metal film layer and plastics micro-channel capillary wick are followed successively by from outside to inside, plastics micro-channel capillary wick includes plastics micro-channel capillary basic unit and plastics covering, the micron or nano-scale trenches structure of axial direction are set in plastics micro-channel capillary basic unit, micron or nano-scale trenches structure include the big peak of conduit and the conduit small peak between the big peak of adjacent conduit, plastics covering is connected with the end sealing at the big peak of conduit, make to form independent airtight cavity between the adjacent big peak of conduit, and worker quality liquid is filled in airtight cavity；The extexine of plastics covering and the extexine difference heat seal metal film layer of plastics micro-channel capillary basic unit.The present invention can recover normal with the capillary wick with flexible plastic production micron or nano-scale trenches structure, and heat seal layer of metal film layer after making plane heat pipe bending deformation, be greatly reduced while also making processing technology become simple and cost.
Description
Technical field
It is specially a kind of ultra-thin, flexible and plane heat pipe the present invention relates to a kind of heat-pipe apparatus.
Background technology
Heat pipe is a kind of high-performance heat transfer components, and it is fully sharp, and the fast speed heat of the phase transformation of hot use conduction principle and refrigeration filling is passed
Property is passed, by transmitting heat in the evaporation of Totally enclosed vacuum liquid in pipe and the condensation of steam.
Current heat pipe is widely used in high heat flux electronic equipment dissipating heat field, with the lightening development of electronic equipment
Trend, key issue of the radiating as this class of electronic devices, and traditional cylindrical type micro heat pipe or common flattening type heat pipe have been difficult to
Apply on the electronic equipment of compact light and thin type, therefore, the hot crisis of the exploitation of ultra-thin micro heat pipe to current microelectronic industry has
Have great advantage.
Ultrathin heat pipe refers to that integral thickness is less than 2mm heat pipe, is to adapt to the narrow and small radiating of light and thin type electronic equipment
The new heat pipe in space, compared with conventional heat pipe, ultrathin heat pipe is in addition to it will keep good heat conductivility, in addition it is also necessary to meet thick
The thinner requirement of degree, this just brings difficulty to the exploitation and design of ultrathin heat pipe, because the restriction of ultrathin heat pipe thickness causes
The internal liquid working medium useful space is greatly reduced, and further results in the reduction of the adopting heat pipes for heat transfer limit, and therefore thermal resistance increase, solves super
Thin heat pipe structure design problem promotes the key that working medium liquid phase reflux cycle is ultra-thin micro heat pipe research at present.
The content of the invention
The deficiency existed for above-mentioned existing middle technology, the present invention devises a kind of composite ultrathin flexible plane heat
Pipe, with the capillary wick with flexible plastic production micron or nano-scale trenches structure, and unifies in the outer surface heat of plastics
Layer metal film layer, can recover normal, while also making processing technology become simple and cost after making plane heat pipe bending deformation
It is greatly reduced.
The technical solution adopted by the present invention：A kind of composite ultrathin flexible plane heat pipe, is followed successively by metal from outside to inside
Film layer and plastics micro-channel capillary wick, the plastics micro-channel capillary wick includes plastics micro-channel capillary basic unit and plastics are covered
The micron or nano-scale trenches structure of axial direction, micron or the nanoscale ditch are set in layer, the plastics micro-channel capillary basic unit
Slot structure includes the big peak of conduit and the conduit small peak between the big peak of adjacent conduit, the plastics covering and the big peak of conduit
End sealing is connected, and makes to form independent airtight cavity between the adjacent big peak of conduit, and fill working medium in the airtight cavity
Liquid；The extexine of the plastics covering and the extexine difference heat seal metal film layer of plastics micro-channel capillary basic unit.
Further optimize, the micron or nano-scale trenches structure in the plastics micro-channel capillary basic unit are rolled using mould
Pressure or stretch forming process make；The top of the plastics covering and the big peak of conduit is tightly connected by hot composition process；Institute
The overlapping for stating the metal film layer and the metal film layer of plastics micro-channel capillary basic unit of modeling coating uses ultrasonic bonding
Process seal is connected.
Further optimize, the height of the conduit small peak is 0.10-0.50mm, and the height at the big peak of conduit is 0.50-
0.80mm。
Further optimize, the gross thickness of the plane heat pipe is 0.5-2.0mm, and the thickness of the metal film layer is
0.05-0.25mm。
Further optimize, the loading of the worker quality liquid accounts for the 105%- of micron or nanometer channel runner cumulative volume
115%。
Further optimize, the vertical sectional shape at the big peak of conduit and conduit small peak is rectangle or trapezoidal.
Further optimize, the metal film layer is made using copper or aluminum.
Further optimize, the worker quality liquid is liquefied ammonia, ultra-pure water, methanol, ethanol or acetone.
Further optimize, the plastics micro-channel capillary basic unit and plastics covering use polytetrafluoroethylene (PTFE), high density
Polyethylene or polypropylene carbonate make.
The present invention closes metal film layer in the outer surface heat of plastics micro-channel capillary basic unit and plastics covering, is prevented from
Plastics micro-channel capillary wick（Plastics micro-channel capillary basic unit and plastics covering）Produced in worker quality liquid gasification and condensation process
Raw expansion or shrinkage deformation by a relatively large margin, while metal film layer also makes plane heat pipe have certain intensity.It is micro- in plastics
The inside of conduit capillary wick, the top at multiple big peaks of conduit is tightly connected with plastics covering, forms multiple independent closed chambers
Body, so as to using the support at the big peak of conduit and pulling-down effect, further prevent plastics micro-channel capillary wick（Plastics micro-channel
Capillary basic unit and plastics covering）The issuable expansion or shrinkage by a relatively large margin in worker quality liquid gasification and condensation process
Deformation.
The multiple conduit small peaks set in the present invention between the adjacent big peak of conduit form the condensed backflow of worker quality liquid
Axial micron or nano-scale trenches runner.Formed between the big peak of adjacent conduit inside independent airtight cavity, micron or nanometer
The capillary force of level groove structure provides driving force for the backflow of worker quality liquid, it is possible to effectively reduces worker quality liquid and evaporates to be formed
Gas phase and liquid phase surface between influence each other, so as to lift heat output, reduce relative thermal resistance.
The present invention using with flexible plastic production plane heat pipe micron or nano-scale trenches structure tube core, with
The direct processing micron level groove structure of metal pipe internal surface is compared, and process becomes simple, and difficulty of processing is significantly reduced, processing
Cost is also reduced.Because being rolled by mould or stretch forming process, micron or nanoscale in plastics micro-channel capillary basic unit
Groove structure can be completed with disposal integral molding, but also can process more complicated groove structure, so as to further drop
The thickness of low degree heat pipe, while the weight of plane heat pipe can also be reduced.In addition, the present invention is made using the pliability of plastics
Plane heat pipe can be recovered normally after bending deformation in the short time, so as to improve heat pipe holding in actual use
The degree of crook received.
Brief description of the drawings
Fig. 1 is the structural representation of composite ultrathin flexible plane heat pipe.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme is further described in detail.
As shown in fig. 1, metal film layer 1 and plastics micro-channel capillary wick, plastics are followed successively by from outside to inside in the present invention
Micro-channel capillary wick includes plastics micro-channel capillary basic unit 2 and plastics covering 5, is existed using mould rolling or stretch forming process
The micron or nano-scale trenches structure 7 of axial direction are set in plastics micro-channel capillary basic unit 2, and micron or nano-scale trenches structure 7 are wrapped
Include the big peak 4 of conduit and the conduit small peak 6 between the big peak 4 of adjacent conduit；The top of plastics covering 5 and the big peak 4 of conduit leads to
Cross hot composition process to be tightly connected, make to form independent airtight cavity 8 between the adjacent big peak 4 of conduit, and fill out in airtight cavity 8
Fill a certain proportion of worker quality liquid 3；The extexine of plastics covering 5 and the extexine of plastics micro-channel capillary basic unit 2 are warm respectively
Close metal film layer 1；The weight of the metal film layer 1 of plastics covering 5 and the metal film layer 1 of plastics micro-channel capillary basic unit 2
Folded place is tightly connected using ultrasonic welding process.
In addition, the height of the conduit small peak 6 further optimized is 0.10-0.50mm, the height at the big peak 4 of conduit is
0.50-0.80mm；The gross thickness of the plane heat pipe is 0.5-2.0mm, and the thickness of the metal film layer 1 is 0.05-
0.25mm；The loading of the worker quality liquid 3 accounts for the 105%-115% of micron or the cumulative volume of nanometer channel 7；The big peak 4 of conduit
Vertical sectional shape with conduit small peak 6 is rectangle or trapezoidal；The metal film layer 1 is made using copper or aluminum；The working medium liquid
Body 3 is liquefied ammonia, ultra-pure water, methanol, ethanol or acetone；The plastics micro-channel capillary basic unit 2 and plastics covering 5 use poly- four
PVF, high density polyethylene (HDPE) or polypropylene carbonate make.
The metal film layer 1 of the present invention is prevented from plastics micro-channel capillary wick（Plastics micro-channel capillary basic unit 2 and plastics
Coating 5）Expansion or shrinkage deformation by a relatively large margin is produced in the gasification of worker quality liquid 3 and condensation process, while metal foil
Film layer 1 also makes plane heat pipe have certain intensity.In the inside of plastics micro-channel capillary wick, the top at multiple big peaks 4 of conduit
It is tightly connected with plastics covering 5, forms multiple independent airtight cavities 8, so as to utilizes the support and drawing at the big peak 4 of conduit
Contracting is acted on, and further prevents plastics micro-channel capillary wick（Plastics micro-channel capillary basic unit 2 and plastics covering 5）In worker quality liquid
Issuable expansion or shrinkage deformation by a relatively large margin in 3 gasification and condensation process.
The multiple conduit small peaks 6 set in the present invention between the adjacent big peak 4 of conduit form worker quality liquid 3 condensed time
The axial micron of stream or nano-scale trenches 7.Formed between the big peak 4 of adjacent conduit inside independent airtight cavity 8, micron or nanometer
The capillary force of level groove 7 structure formation provides driving force for worker quality liquid backflow, it is possible to effectively reduce the worker quality liquid 3 of evaporation
Between influence each other, so as to lift heat output, reduce relative thermal resistance.
Claims (9)
1. a kind of composite ultrathin flexible plane heat pipe, is followed successively by metal film layer 1 and plastics micro-channel capillary from outside to inside
Core, it is characterised in that：The plastics micro-channel capillary wick includes plastics micro-channel capillary basic unit 2 and plastics covering 5, the modeling
The micron or nano-scale trenches structure 7 of axial direction are set in material micro-channel capillary basic unit 2；The structure of micron or nano-scale trenches 7
Conduit small peak 6 including the big peak 4 of conduit and between the big peak 4 of adjacent conduit；
The plastics covering 5 is connected with the end sealing at the big peak of conduit 4, makes to be formed between the adjacent big peak 4 of conduit independent close
Closed chamber body 8, and the filling worker quality liquid 3 in the airtight cavity 8；The extexine and plastics micro-channel of the plastics covering 5
The extexine difference heat seal metal film layer 1 of capillary basic unit 2.
2. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The plastics microflute
Micron or nano-scale trenches structure 7 in road capillary basic unit 2 are rolled using mould or stretch forming process makes；The plastics cover
The top of cap rock 5 and the big peak of conduit 4 is tightly connected by hot composition process；The metal film layer 1 of the plastics covering 5 and modeling
The overlapping of the metal film layer 1 of material micro-channel capillary basic unit 2 is tightly connected using ultrasonic welding process.
3. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The conduit small peak
6 height is 0.10-0.50mm, and the height at the big peak 4 of conduit is 0.50-0.80mm.
4. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The plane heat pipe
Gross thickness be 0.5-2.0mm, the thickness of the metal film layer 1 is 0.05-0.25mm.
5. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The worker quality liquid
3 loading accounts for the 105%-115% of micron or the cumulative volume of nano-scale trenches structure 7.
6. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The big peak of conduit
4 and conduit small peak 6 vertical sectional shape be rectangle or trapezoidal.
7. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The metallic film
Layer 1 can be made using copper or aluminum.
8. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The worker quality liquid
3 be liquefied ammonia, ultra-pure water, methanol, ethanol or acetone.
9. a kind of composite ultrathin flexible plane heat pipe according to claim 1, it is characterised in that：The plastics microflute
Road capillary basic unit 2 and plastics covering 5 are made using polytetrafluoroethylene (PTFE), high density polyethylene (HDPE) or polypropylene carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166648.XA CN106940146A (en) | 2017-03-20 | 2017-03-20 | A kind of composite ultrathin flexible plane heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166648.XA CN106940146A (en) | 2017-03-20 | 2017-03-20 | A kind of composite ultrathin flexible plane heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106940146A true CN106940146A (en) | 2017-07-11 |
Family
ID=59464413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710166648.XA Pending CN106940146A (en) | 2017-03-20 | 2017-03-20 | A kind of composite ultrathin flexible plane heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106940146A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568703A (en) * | 2018-04-20 | 2018-09-25 | 西安交通大学 | One kind being used for the surface-cooled flexible heat pipe of high-speed electric main shaft shaft |
| CN109405609A (en) * | 2018-10-24 | 2019-03-01 | 山东岱荣节能环保科技有限公司 | A kind of efficient phase transformation pipe and preparation method thereof |
| CN112867359A (en) * | 2021-01-20 | 2021-05-28 | 北京空间机电研究所 | Silicon nitride capillary core rectangular flat plate capillary pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655347A (en) * | 2004-02-12 | 2005-08-17 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe and manufacturing method therefor |
| US20070068657A1 (en) * | 2005-09-27 | 2007-03-29 | Kenichi Yamamoto | Sheet -shaped heat pipe and method of manufacturing the same |
| CN102853700A (en) * | 2012-07-31 | 2013-01-02 | 南京航空航天大学 | Flexible flat heat pipe |
| 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 |
-
2017
- 2017-03-20 CN CN201710166648.XA patent/CN106940146A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655347A (en) * | 2004-02-12 | 2005-08-17 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe and manufacturing method therefor |
| US20070068657A1 (en) * | 2005-09-27 | 2007-03-29 | Kenichi Yamamoto | Sheet -shaped heat pipe and method of manufacturing the same |
| CN102853700A (en) * | 2012-07-31 | 2013-01-02 | 南京航空航天大学 | Flexible flat heat pipe |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568703A (en) * | 2018-04-20 | 2018-09-25 | 西安交通大学 | One kind being used for the surface-cooled flexible heat pipe of high-speed electric main shaft shaft |
| CN109405609A (en) * | 2018-10-24 | 2019-03-01 | 山东岱荣节能环保科技有限公司 | A kind of efficient phase transformation pipe and preparation method thereof |
| CN109405609B (en) * | 2018-10-24 | 2024-04-02 | 山东岱荣节能环保科技有限公司 | Efficient phase change heat pipe and preparation method thereof |
| CN112867359A (en) * | 2021-01-20 | 2021-05-28 | 北京空间机电研究所 | Silicon nitride capillary core rectangular flat plate capillary pump |
| CN112867359B (en) * | 2021-01-20 | 2023-03-07 | 北京空间机电研究所 | Silicon nitride capillary core rectangular flat plate capillary pump |
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Application publication date: 20170711 |