CN106440899A - Flexible pulsating heat tube device - Google Patents
Flexible pulsating heat tube device Download PDFInfo
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- CN106440899A CN106440899A CN201611050112.3A CN201611050112A CN106440899A CN 106440899 A CN106440899 A CN 106440899A CN 201611050112 A CN201611050112 A CN 201611050112A CN 106440899 A CN106440899 A CN 106440899A
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- Prior art keywords
- shaped
- capillary tube
- copper capillary
- micro
- copper
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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
- F28D15/0241—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 tubes being flexible
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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 flexible pulsating heat tube device which comprises an evaporation section, a heat insulation section, a condensation section and a vacuumizing/liquid injection hole. The evaporation section and the condensation section are composed of copper capillary tubes. The heat insulation section is composed of elastic material fluorine rubber tubes. The filling factor of the flexible pulsating heat tube ranges from 30% to 70%. When working, the flexible pulsating heat tube device not only has the advantages of common pulsating heat tubes of being simple and compact in structure and high in heat transfer capacity, but also can better meet the requirements for heat dissipation in various complex sealed spaces due to the fact that the self structure of the pulsating heat tube can be repeatedly bent and deformed in a large angle range, and meanwhile keeps good heat transfer performance.
Description
Technical field
The present invention relates to the cooling technical field of passive drive, specially a kind of flexibility pulsating heat pipe device.
Background technology
With the continuous improvement of various electronic component integration degree, high density, miniaturization have been irreversible trend,
Can the effective solution that heating problem is found for seriously have govern the cost of commercial electronic products, and affects its input
The time in market.In recent years, due to development and the popularization of Intelligent mobile equipment, wearable device and electric automobile, to radiating
The portability of equipment and space adaptability etc. are put forward higher requirement.Pulsating heat pipe structure is simple, no internal capillary core, has
Miniaturization, the advantage of low cost, are very suitable for the cooling under high heat flux in little space.But in current research,
Pulsating heat pipe is mainly integrally formed with metal materials such as copper, aluminium, has rigid structure, and therefore its application also can be subject to a certain extent
The impact of working environment.
At present, in conventional heat pipe field, flexible heat pipe particularly high molecular polymer flexible heat pipe, because it has high heat transfer concurrently
The performance of ability and flexible pliable and receive significant attention.Yang etc. exists《Applied Thermal Engineering》
" the Fabrication and performance evaluation of delivering on (volume 95 page number 445-453 in 2016)
Flexible heat pipes for potential thermal control of foldable electronics " one
The flexible heat pipe device that a kind of adiabatic section uses fluorine rubber-pipe is devised in literary composition, in the mode of operation of horizontal positioned, designed
Heat pipe can realize the free bend from 0 ° to 180 °, and still can have very low heat in the case of repeated flex
Resistance.But for traditional general heat pipe, the bending of repetition can cause to manage interior liquid-sucking core structural damage and come off, so that hot
Tube failure.Therefore, a kind of new no liquid-sucking core flexible heat pipe of design is most important.Ogata etc. is in " Performance
evaluation of ultra-thin polymer pulsating heat pipes”(14th IEEE Thermal and
Thermomechanical Phenomena in Electronic Systems Conference) propose in a literary composition a kind of new
The pulsating heat pipe that type thin polymer makes, its heat-transfer capability copper coin thick with 0.4mm is suitable.Although flexible polymer pulsation heat
Pipe has certain development, but has not yet to see the related report being capable of the flexible pulsating heat pipe of free bend in polarizers of big angle scope
Road.
Content of the invention
The purpose of the present invention is to propose to a kind of flexibility pulsating heat pipe device is so as to adapt to equipment in complicated confined space
Heat dissipation problem, provides efficient Cooling Solution, strengthens its actual application ability.
The present invention is to realize above-mentioned technical purpose by following technological means.
A kind of flexibility pulsating heat pipe device is it is characterised in that include condensation segment, adiabatic section, evaporator section, threeway, working medium；
Described condensation segment, including n little " U-shaped " copper capillary tube, big " U-shaped " copper capillary tube, copper fin, copper fin is solid
It is scheduled in little " U-shaped " copper capillary tube and big " U-shaped " copper capillary tube；
Evaporator section, including n+1 little " U-shaped " copper capillary tube；
Described adiabatic section, including rubber tube, rubber bore is identical with copper capillary tube external diameter, using fluorine rubber-pipe material；
Condensation segment, adiabatic section, evaporator section is sequentially communicated by way of cementing, constitutes snakelike heat pipe circuit, internal filling
Working medium, the port of two rubber tubes in two ports and adiabatic section outermost of big " U-shaped " copper capillary tube is connected, and is formed and closes back
Road；
Described threeway is arranged on greatly in " U-shaped " copper capillary tube, is not to take out with one end port that " U-shaped " copper capillary tube is connected greatly
Vacuum/working medium liquid injection port.
Described " U-shaped " copper capillary tube 7, its inwall can be smooth inner wall or the inwall being processed into micro-channel, micro-channel
Shape of cross section is rectangle or triangle；
Described working medium, volume liquid filled ratio is within 30～70%.
The micro-channel structure of described " U-shaped " copper capillary tube, the overall diameter d of " U-shaped " copper capillary tubeo=4mm, " U-shaped " capillary copper
The wall thickness t of tubulew=0.22mm, the high l of micro-channel inner structural wall face toothf=0.12mm, micro-channel structure addendum angle γ=40 °, micro-
Channel structure pitch angle alpha=12 °, micro-channel structure tooth bar number N=40, the wetted perimeter S=0.448mm of the single tooth of micro-channel structure.
The present invention is mainly also had the effect that compared with existing pulsating heat pipe technology：Except inheriting tradition pulsating heat pipe structure
Simply, outside the strong advantage of heat-transfer capability, also can achieve bending and the deformation in polarizers of big angle scope, form multiple space structures, and
Can be repeated several times bending, adjust bending angle and self structure at any time according to radiating requirements.Compared with other high molecular polymers,
Fluorubber material used by adiabatic section of the present invention can keep stable performance in -50 to 200 DEG C of temperature ranges, has excellent electricity absolutely
Edge, air-tightness and heat-insulating property.At evaporator section and condensation segment position, still adopt traditional copper capillary material, thus more favourable
In this partly flow boiling of hot intraductal working medium and condensing heat-exchange.Therefore, present invention flexibility pulsating heat pipe is not only in the course of work
In be capable of free bend in polarizers of big angle scope, environment has higher adaptability to external world, still ensures that good simultaneously
Heat transfer property.
Brief description
Fig. 1 is present invention flexibility pulsating heat pipe apparatus structure schematic diagram.
Fig. 2 (a), (b) and (c) is respectively three kinds of different structure schematic diagrames of present invention flexibility pulsating heat pipe.
Fig. 3 is micro-channel cross section partial enlarged drawing schematic diagram.
Fig. 4 is the thermal resistance of the flexible pulsating heat pipe of notch cuttype, inverse u shape and three kinds of different structures of " N " type with heating power
Change curve
Fig. 5 is micro-channel along heat pipe length direction partial sectional view.
Wherein, 1, condensation segment, 2, adiabatic section, 3, evaporator section, 4, threeway, 5, copper fin, 6, rubber tube, 7, " U-shaped " capillary copper
Tubule, do, overall diameter, tw, wall thickness, lf, internal face tooth high, γ, addendum angle, α, helical angle.
Specific embodiment
In order to better illustrate objects and advantages of the present invention, it is that embodiment is done to the present invention further below in conjunction with the accompanying drawings
Detailed description.
As shown in figure 1, a kind of flexibility pulsating heat pipe device is it is characterised in that include condensation segment 1, adiabatic section 2, evaporator section
3, threeway 4, working medium；Described condensation segment 1, including n little " U-shaped " copper capillary tube 7, big " U-shaped " copper capillary tube 7, copper fin
5, copper fin (5) is fixed in little " U-shaped " copper capillary tube 7 and big " U-shaped " copper capillary tube 7；Evaporator section 3, including n+1 little " U
Shape " copper capillary tube 7, n is the positive integer more than or equal to 1；Described adiabatic section 2, including rubber tube 6, rubber tube 6 internal diameter is thin with capillary copper
Pipe external diameter is identical, using fluorine rubber-pipe material；Condensation segment 1, adiabatic section 2, evaporator section 3 is sequentially communicated by way of cementing, structure
Become snakelike heat pipe circuit, internal filling working medium, two ports of big " U-shaped " copper capillary tube 7 and adiabatic section two rubber of 2 outermost
The port of pipe 6 is connected, and forms loop；Described threeway 4 is arranged on greatly in " U-shaped " copper capillary tube 7, not with " U-shaped " capillary copper greatly
One end port that tubule 7 connects is to vacuumize/working medium liquid injection port；Described " U-shaped " copper capillary tube 7, its inwall can be smooth inner wall
Or it is processed into the inwall of micro-channel, the shape of cross section of micro-channel is rectangle or triangle.
Embodiment 1
As shown in such as Fig. 1 and Fig. 2 (a).Wherein evaporator section 3 and condensation segment 1 are mainly machined with micro-channel structure by internal face
" U-shaped " copper capillary tube 7 form, the overall diameter of " U-shaped " used copper capillary tube 7 is 4mm, wall thickness 0.3mm, material used by adiabatic section 2
Expect for fluorine rubber-pipe, rubber tube 6 internal-and external diameter is respectively 4mm and 6mm, by the tool of room temperature setting adhesives and evaporator section 3 and condensation segment 1
" U-shaped " copper capillary tube 7 having micro-channel structure is connected.Threeway 4 is in order to realize vacuumizing the injection with working medium, and high temperature is cementing
Method is connected integral, composition heat pipe circuit with the two-port of " U-shaped " copper capillary tube 7.Heat pipe evaporator section 3, adiabatic section 2 and condensation
The length of section 1 is respectively 80mm, 870mm and 120mm, and is filled with the deionized water of 50% volume fraction as working medium.As Fig. 1
Shown, before filling working medium, by threeway 4, described flexibility pulsating heat pipe device need to be carried out vacuumizing process, treat that inside is not coagulated
Property gas fully exclude after, a certain amount of deionized water can be filled, then the liquid injection port of threeway 4 is sealed.
Embodiment 2
With embodiment 1, except that, the relative position of flexible pulsating heat pipe device evaporator section 3, adiabatic section 2 and condensation segment 1
Put respectively such as Fig. 2 (b), shown in 2 (c), there are multiple different space structures, as shown in Fig. 2 can be inverse u shape, stairstepping or
" N " type, depending on concrete structure shape can be according to radiating requirements and external environment.As shown in figure 4, inverse u shape, stairstepping, " N " type
Three kinds of flexible pulsating heat pipes are respectively provided with good starting characteristic, start power and are less than 20W.Wherein, for " notch cuttype " flexibility arteries and veins
Dynamic heat pipe, when heating power is for 192W, thermal resistance drops to 0.32W/ DEG C, and dryouies phenomenon not yet, shows good
Heat transfer property.The heat-transfer capability of three kinds of flexible pulsating heat pipes is followed successively by " notch cuttype ", " inverted U " and " N-type " from high to low.
Embodiment 3
With embodiment 1 and embodiment 2, except that flexible pulsating heat pipe device evaporator section 3 and condensation segment 1 " U used
The internal face of shape " copper capillary tube 7 is machined with micro-channel structure, as shown in Figures 3 and 5.The overall diameter of " U-shaped " used copper capillary tube 7
do=4mm, the wall thickness t of " U-shaped " copper capillary tube 7w=0.22mm, the internal face tooth of the micro-channel structure of " U-shaped " copper capillary tube 7 is high
lf=0.12mm, addendum angle γ=40 ° of the micro-channel structure of " U-shaped " copper capillary tube 7, the micro-channel knot of " U-shaped " copper capillary tube 7
Pitch angle alpha=12 ° that structure along heat pipe length direction, micro-channel and heat pipe axis is in, the micro-channel knot of " U-shaped " copper capillary tube 7
The tooth bar number N=40 of structure, be can be calculated by simple geometry, and the internal excessively stream cross-sectional area A of " U-shaped " copper capillary tube 7=
9.2995mm2, the wetted perimeter S=0.448mm of the single tooth of the micro-channel structure of " U-shaped " copper capillary tube 7, by formulaObtain " U-shaped " copper capillary tube 7 hydraulic diameter D being consequently formedhIt is about 2.0mm.
Embodiment 4
With embodiment 3, except that, the inside micro-channel feature cross-section of flexible pulsating heat pipe be shaped as rectangle or
Triangle.
It is illustrating of the embodiment feasible for the present invention that upper example describes in detail, and this embodiment simultaneously is not used to limit this
The scope of the claims of invention.Wherein, " U-shaped " copper capillary tube 7 number of the snakelike heat pipe circuit of flexible pulsating heat pipe device can be according to reality
Border needs to be adjusted, and evaporator section 3 and condensation segment 1 may also be employed interior smooth metal capillary, all does without departing from the present invention
Equivalence enforcement or change, be intended to be limited solely by the scope of the claims of this case.
Claims (5)
1. a kind of flexibility pulsating heat pipe device is it is characterised in that include condensation segment (1), adiabatic section (2), evaporator section (3), threeway
(4), working medium；
Described condensation segment (1), including n little " U-shaped " copper capillary tube (7), big " U-shaped " copper capillary tube (7), copper fin (5),
Copper fin (5) is fixed in little " U-shaped " copper capillary tube (7) and big " U-shaped " copper capillary tube (7)；
Evaporator section (3), including n+1 little " U-shaped " copper capillary tube (7)；
Described adiabatic section (2), including rubber tube (6), rubber tube (6) internal diameter is identical with copper capillary tube external diameter, using fluorine rubber-pipe
Material；
Condensation segment (1), adiabatic section (2), evaporator section (3) is sequentially communicated by way of cementing, constitutes snakelike heat pipe circuit, internal
Filling working medium, two ports of big " U-shaped " copper capillary tube (7) and the port phase of two rubber tubes (6) of adiabatic section (2) outermost
Even, form loop；
Described threeway (4) is arranged on greatly in " U-shaped " copper capillary tube (7), not with one end end that " U-shaped " copper capillary tube (7) is connected greatly
Mouth is for vacuumizing/working medium liquid injection port.
2. a kind of flexibility pulsating heat pipe device according to claim 1 is it is characterised in that described working medium, volume liquid filled ratio
Within 30～70%.
3. a kind of flexibility pulsating heat pipe device according to claim 1 is it is characterised in that described " U-shaped " copper capillary tube
(7), its inwall can be smooth inner wall or the inwall being processed into micro-channel structure.
4. a kind of flexibility pulsating heat pipe device according to claim 3 is it is characterised in that described " U-shaped " copper capillary tube (7)
Inwall is machined with micro-channel structure, and the shape of cross section of micro-channel is rectangle or triangle.
5. a kind of flexibility pulsating heat pipe device according to claim 3 is it is characterised in that described " U-shaped " copper capillary tube (7)
Micro-channel structure, the overall diameter d of " U-shaped " copper capillary tube (7)o=4mm, the wall thickness t of " U-shaped " copper capillary tube (7)w=0.22mm,
The high l of micro-channel inner structural wall face toothf=0.12mm, micro-channel structure addendum angle γ=40 °, micro-channel structure pitch angle alpha=
12 °, micro-channel structure tooth bar number N=40, the wetted perimeter S=0.448mm of the single tooth of micro-channel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050112.3A CN106440899A (en) | 2016-11-25 | 2016-11-25 | Flexible pulsating heat tube device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050112.3A CN106440899A (en) | 2016-11-25 | 2016-11-25 | Flexible pulsating heat tube device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106440899A true CN106440899A (en) | 2017-02-22 |
Family
ID=58218316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050112.3A Pending CN106440899A (en) | 2016-11-25 | 2016-11-25 | Flexible pulsating heat tube device |
Country Status (1)
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| CN (1) | CN106440899A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310348A (en) * | 2017-06-07 | 2017-11-03 | 东南大学 | A kind of built-in heat pipe passive cooling system of bottom of car |
| CN107690265A (en) * | 2017-07-31 | 2018-02-13 | 深圳市嘉姆特通信电子有限公司 | Flexible heat sink device |
| CN108709449A (en) * | 2018-04-12 | 2018-10-26 | 胡建辉 | Heat exchange pipe of evaporator |
| CN109041508A (en) * | 2017-06-12 | 2018-12-18 | 江苏鸿源动力科技有限公司 | A kind of cooling equipment of the passive combined heating power of novel master |
| CN113039875A (en) * | 2019-11-20 | 2021-06-25 | 荣耀终端有限公司 | Heat pipe, heat dissipation module and terminal equipment |
| WO2021133970A1 (en) | 2019-12-24 | 2021-07-01 | Global Cooling Technology Group, Llc | Micro-channel pulsating heat pipe |
Citations (5)
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| JPH07332881A (en) * | 1994-06-09 | 1995-12-22 | Akutoronikusu Kk | Loop type zigzag capillary heat pipe |
| CN201221911Y (en) * | 2008-04-30 | 2009-04-15 | 江苏仓环铜业股份有限公司 | Heat transmission copper pipe |
| CN101957152A (en) * | 2010-10-15 | 2011-01-26 | 浙江大学 | Novel pulsation heat pipe for non-inclination starting operation |
| CN103148722A (en) * | 2013-03-28 | 2013-06-12 | 山东科院天力节能工程有限公司 | Parallel flow pulsation heat tube |
| CN104634147A (en) * | 2015-01-27 | 2015-05-20 | 江苏中圣压力容器装备制造有限公司 | Pulsating heat pipe with micro-groove structure |
-
2016
- 2016-11-25 CN CN201611050112.3A patent/CN106440899A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332881A (en) * | 1994-06-09 | 1995-12-22 | Akutoronikusu Kk | Loop type zigzag capillary heat pipe |
| CN201221911Y (en) * | 2008-04-30 | 2009-04-15 | 江苏仓环铜业股份有限公司 | Heat transmission copper pipe |
| CN101957152A (en) * | 2010-10-15 | 2011-01-26 | 浙江大学 | Novel pulsation heat pipe for non-inclination starting operation |
| CN103148722A (en) * | 2013-03-28 | 2013-06-12 | 山东科院天力节能工程有限公司 | Parallel flow pulsation heat tube |
| CN104634147A (en) * | 2015-01-27 | 2015-05-20 | 江苏中圣压力容器装备制造有限公司 | Pulsating heat pipe with micro-groove structure |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310348A (en) * | 2017-06-07 | 2017-11-03 | 东南大学 | A kind of built-in heat pipe passive cooling system of bottom of car |
| CN109041508A (en) * | 2017-06-12 | 2018-12-18 | 江苏鸿源动力科技有限公司 | A kind of cooling equipment of the passive combined heating power of novel master |
| CN107690265A (en) * | 2017-07-31 | 2018-02-13 | 深圳市嘉姆特通信电子有限公司 | Flexible heat sink device |
| CN107690265B (en) * | 2017-07-31 | 2024-05-24 | 深圳市嘉姆特科技有限公司 | Flexible heat dissipation device |
| CN108709449A (en) * | 2018-04-12 | 2018-10-26 | 胡建辉 | Heat exchange pipe of evaporator |
| CN113039875A (en) * | 2019-11-20 | 2021-06-25 | 荣耀终端有限公司 | Heat pipe, heat dissipation module and terminal equipment |
| US12089371B2 (en) | 2019-11-20 | 2024-09-10 | Honor Device Co., Ltd. | Heat pipe, heat dissipation module, and terminal device |
| WO2021133970A1 (en) | 2019-12-24 | 2021-07-01 | Global Cooling Technology Group, Llc | Micro-channel pulsating heat pipe |
| EP4078060A4 (en) * | 2019-12-24 | 2023-12-27 | Global Cooling Technology Group, LLC | Micro-channel pulsating heat pipe |
| US11920868B2 (en) | 2019-12-24 | 2024-03-05 | Global Cooling Technology Group, Llc | Micro-channel pulsating heat pipe |
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Application publication date: 20170222 |