CN1725947A - Plane capillary core evaporimeter with fin for CPL - Google Patents
Plane capillary core evaporimeter with fin for CPL Download PDFInfo
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- CN1725947A CN1725947A CN 200510019111 CN200510019111A CN1725947A CN 1725947 A CN1725947 A CN 1725947A CN 200510019111 CN200510019111 CN 200510019111 CN 200510019111 A CN200510019111 A CN 200510019111A CN 1725947 A CN1725947 A CN 1725947A
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Abstract
A planar capillary core evaporator with fin for CPL consists of base , top cover being fixed and sealed with base , isolation plate for isolation top cover to be liquid collection cavity and steam collection cavity , liquid collection cavity formed by horizontal and longitudinal grooves cross arranged and opened with liquid return inlet on it , steam collection cavity opened with vapor outlet on it , fin set on outer surface of top cover ,longitudinal steam channel connected to steam cavity on base and capillary core set between liquid collection cavity and steam channel .
Description
Technical field
The present invention relates to the plane type capillary core evaporator of a kind of CPL of being used for.
Background technology
Because the development of technology, the power of electronic device is increasing, and integrated level is more and more higher, and the heat that produces in the unit volume is also increasing, and meanwhile, effectively area of dissipation is corresponding dwindles, thereby heat dissipation problem is more outstanding.The capillary pumped two-phase fluid loop (CPL) that grows up based on hot pipe technique has that heat-transfer capability is big, temperature-controlled precision is high, energy consumption is low and advantage such as isothermal is good, becomes the idealized system that solves the electronic device cooling.CPL mainly comprises: evaporator, condenser, reservoir, vapour-liquid pipeline and other additional device.CPL mainly rely on working medium phase transformation in evaporator to absorb heat and in condenser the phase transformation release heat realize control transfer of heat.Evaporator is the bearing part of system's heat load, in the evaporator capillary structure, liquid working substance is heated and vaporizes, after heat is transported to condenser from thermal source, vapour phase working medium is condensed, conduct heat to the external world, the capillary suction force that the evaporator capillary wick produces makes the condensed fluid in the condenser turn back to evaporator by fluid pipeline, finishes systemic circulation.In CPL, evaporator is one of the most key part, and it is not only the inhalation part of heat, and is the working medium source that required actuating force produces of circulating in the whole system, and can its performance quality directly has influence on CPL start realization with whole work.
CPL adopts tubular evaparator usually, and the shortcoming of tubular evaparator is: 1. for tubular evaparator being used for heat radiation, must add a cold drawing, cold drawing is contacted with the load surface, reach the purpose of heat radiation, take this mode to increase heat transfer resistance, reduced the heat transfer efficiency of system; 2. after liquid enters the evaporator central passage, radially flow into capillary wick and evaporation, the steam of generation flows into the tube wall conduit, flows into jet chimney by the conduit end again, when system's heat load sharply changes, a large amount of working medium are vaporized, if tubular evaparator is less because of the liquid storage amount, in the time of can not in time replenishing the evaporation capacity of capillary in-core, to cause system's feed flow deficiency, when situation is serious, even the evaporator burning is exhausted, cause system's operation failure; 3. owing to the restriction of tubular evaparator structure, wick structure can only adopt the dusty material sintering to form, and this needs specialized apparatus to make, thereby cost of manufacture is higher; 4. the CPL evaporator only as the heat absorbing element of system, finished by condenser by the heat radiation of heat, thereby under the high power situation, evaporator and condenser all must bear bigger load.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part, the flange-cooled plane type capillary core evaporator of a kind of CPL of being used for is provided, this evaporator operation is functional, simple in structure, easy to make, can improve the heat transfer efficiency of system by this evaporator, improve the runnability of system.
For achieving the above object, the technical solution used in the present invention is: a kind of flange-cooled plane type capillary core evaporator that is used for CPL, comprise base, loam cake, capillary wick, and base and loam cake fix and seal; Dividing plate is divided into liquid collecting cavity, steam collecting cavity with loam cake, and liquid collecting cavity is made of and arranged crosswise lateral channel and longitudinal channels, has withdrawing fluid inlet on liquid collecting cavity, has steam (vapor) outlet on steam collecting cavity, at the outer surface of loam cake fin is set; Have steam conduit, steam channel on base, the steam conduit is made of longitudinal channels, and steam channel is communicated with steam conduit and steam collecting cavity; Capillary wick places between liquid collecting cavity and the steam conduit.
The present invention compared with prior art has following remarkable advantage:
(1) the present invention is the plane formula evaporator, can contact with the surface that is cooled better, has reduced contact heat resistance, has improved the heat transfer efficiency of system, and more compact structure, uses more convenient.
(2) owing to adopt the inverse type structure, on the one hand, the withdrawing fluid inlet is positioned at the upper surface of evaporator, heat load acts on the lower surface of evaporator, condensed fluid refluxes at the evaporator upper surface, and in gravitational field, gravity is also as the part of liquid return actuating force, increase the actuating force of system, helped the circulation of systematic working medium more; On the other hand, because the heating fin closely contacts with the capillary wick surface, the liquid working substance on capillary wick surface is heated to saturation temperature rapidly, the superheating ratio that produces the steam wall is reduced, the easier vaporization of liquid working substance in the evaporator, the startup of system and thermal inertia are reduced, thereby improved the startup and the runnability of system.
(3) if steam conduit exit is entrained with liquid, then liquid can be collected in this chamber, and steam collecting cavity can play the effect of vapour, liquid isolator, can prevent that vapour, liquid from carrying phenomenon secretly, makes system stable.
(4) liquid collecting cavity that constitutes by horizontal and longitudinal groove, can be so that liquid working substance uniform distribution therein, reduce flow resistance, and in conduit, can accumulate certain amount of fluid, play the effect in compensating liquid chamber, when system's heat load changes, liquid working substance in the conduit can be supplied with capillary wick rapidly, to satisfy the required working medium amount of load, improved the variable working condition characteristic of system, make system reach another balance point to fast speed, reduced system, avoid scarce liquid of system's appearance or burning to exhaust phenomenon near balance time.
(5) outer surface at loam cake is provided with fin, at double or many times increase the external surface area of evaporator, make evaporator except utilizing inner liquid working substance vaporization phase-change heat transfer, can also utilize the peripherad environment heat radiation of outer surface, under identical capillary structure, correspondingly improved the heat-transfer capability of system, and the more compact structure of system, can be in the heat-sinking capability of limited space raising system.
(6) capillary wick can adopt multi-layer silk screen to compress to make, thereby makes simply, need not special equipment, has reduced the development cost of system.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is the structural representation of loam cake among Fig. 1.
Fig. 5 is the upward view of loam cake among Fig. 1.
Fig. 6 is the structural representation of base among Fig. 1.
Fig. 7 is the vertical view of base among Fig. 1.
Drawing explanation: 1-loam cake, 2-fin, 3-withdrawing fluid inlet, 4-liquid collecting cavity, 5-liquid collecting cavity fin, 6-dividing plate, 7-steam collecting cavity, 8-steam (vapor) outlet, 9-base, 10-steam channel, 11-steam conduit, 12-capillary wick, 13-steam conduit fin.
Embodiment
By Fig. 1～shown in Figure 7, the present invention includes base 9, loam cake 1, capillary wick 12.Connection between loam cake 1 and the base 9 can be adopted welding manner, can also adopt the flange bolt bind mode, sealing means adopts the sealing of O type circle, and employing flange bolt bind mode can be according to the needs of job requirement, change capillary wick 12 easily, reduced the development cost of system.Capillary wick 12 can be formed or be formed by the powdered metallurgical material sintering by the multi-layer silk screen compacting.In order to improve the radiating efficiency of evaporator, the wall surface material of evaporator adopts the big metal material of conductive coefficient, as adopting materials such as copper, aluminium; Capillary wick 12 adopts smaller stainless steel cloth of conductive coefficient or the compacting of nonmetal high polymer silk screen multilayer to form.
Have steam conduit 11, steam channel 10 at base 9, steam conduit 11 is made of seven longitudinal channels, and steam channel 10 is communicated with steam conduit 11 and steam collecting cavity 7.Steam conduit 11 vertical translots are a plurality of, and its section configuration is rectangle, also can be V-type, other shape such as trapezoidal.
During work, the heating surface of evaporator lower surface directly contacts with load is surperficial, absorbs heat in the mode of heat conduction.The steam conduit fin 13 that many parallel connections are arranged on the base 9 directly contacts full of liquid working medium in the capillary wick 12 with capillary wick 12.When heating surface absorbs heat, pass to evaporator by two paths: a part of heat passes to the liquid working substance in the capillary wick 12 rapidly by steam conduit fin 13; Another part is delivered to the fin 2 of evaporator upper surface by wall.Be heated to saturation temperature rapidly with the liquid working substance in the capillary wick 12 that steam conduit fin 13 directly contacts, vaporize, the steam that vaporization back forms enters jet chimney by steam (vapor) outlet 8 then along steam conduit 11, flow to steam collecting cavity 7 by steam channel 10, flows to condenser.If be entrained with drop, then can be deposited in the steam collecting cavity 7.
Steam is put mountain heat cooling in condenser after, vapor condenses is a liquid, under the effect of the capillary suction force that evaporator capillary wick working medium vapour, the liquid phase sell of one's property are given birth to, enter liquid collecting cavity 4 along fluid pipeline through the liquid return inlet 3 of evaporator, liquid working substance is under the effect of the fluid distributor of the horizontal and longitudinal groove formation of liquid collecting cavity 4, withdrawing fluid is evenly distributed in the capillary wick 12, flows to vapour, liquid phase change interface, for system's circulation next time.
Claims (2)
1. flange-cooled plane type capillary core evaporator that is used for CPL is characterized in that:
Comprise base (9), loam cake (1), capillary wick (12), base (9) fixes and seals with loam cake (1);
Dividing plate (6) is divided into liquid collecting cavity (4), steam collecting cavity (7) with loam cake (1), liquid collecting cavity (4) is made of and arranged crosswise lateral channel and longitudinal channels, on liquid collecting cavity (4), have withdrawing fluid inlet (3), on steam collecting cavity (7), have steam (vapor) outlet (8), fin (2) is set at the outer surface of loam cake (1);
Have steam conduit (11), steam channel (10) on base (9), steam conduit (11) is made of longitudinal channels, and steam channel (10) is communicated with steam conduit (11) and steam collecting cavity (7);
Capillary wick (12) places between liquid collecting cavity (4) and the steam conduit (11).
2. want the flange-cooled plane type capillary core evaporator of the 1 described CPL of being used for according to right, it is characterized in that: capillary wick (12) is formed by the multi-layer silk screen compacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100191118A CN100334931C (en) | 2005-07-18 | 2005-07-18 | Plane capillary core evaporimeter with fin for CPL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100191118A CN100334931C (en) | 2005-07-18 | 2005-07-18 | Plane capillary core evaporimeter with fin for CPL |
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| Publication Number | Publication Date |
|---|---|
| CN1725947A true CN1725947A (en) | 2006-01-25 |
| CN100334931C CN100334931C (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100191118A Expired - Fee Related CN100334931C (en) | 2005-07-18 | 2005-07-18 | Plane capillary core evaporimeter with fin for CPL |
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| CN (1) | CN100334931C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997729A (en) * | 2012-12-24 | 2013-03-27 | 天津商业大学 | Heat pipe radiator of phase change drive loop |
| CN106288530A (en) * | 2016-08-19 | 2017-01-04 | 中国航天空气动力技术研究院 | A kind of vaporizer of loop circuit heat pipe and preparation method thereof |
| CN106989627A (en) * | 2017-04-21 | 2017-07-28 | 成都东浩散热器有限公司 | Based on outdoor environment-friendly type temperature regulation structure |
| CN107024128A (en) * | 2017-04-21 | 2017-08-08 | 成都东浩散热器有限公司 | A kind of heat abstractor of fin interior bone |
| CN107466186A (en) * | 2017-07-31 | 2017-12-12 | 华中科技大学 | A kind of novel evaporator structure and its application |
| CN107687783A (en) * | 2017-07-18 | 2018-02-13 | 华南理工大学 | A kind of miniature loop circuit heat pipe and method |
| CN107702574A (en) * | 2017-09-25 | 2018-02-16 | 华中科技大学 | A kind of longitudinal liquid-supply evaporator |
| CN108489312A (en) * | 2018-03-12 | 2018-09-04 | 上海利正卫星应用技术有限公司 | The loop heat pipe evaporator and loop circuit heat pipe of high heat flux density adaptability |
| CN108507839A (en) * | 2018-05-25 | 2018-09-07 | 安徽工业大学 | sedimentation furnace constant temperature sampling method |
| CN108917443A (en) * | 2018-09-05 | 2018-11-30 | 中国电子科技集团公司信息科学研究院 | A kind of flat-plate minitype loop circuit heat pipe of stacked in layers structure |
| CN109148916A (en) * | 2018-09-05 | 2019-01-04 | 中国电子科技集团公司信息科学研究院 | A kind of heat drive fuel cell system |
| CN112272488A (en) * | 2020-09-25 | 2021-01-26 | 奇鋐科技股份有限公司 | Gas-liquid phase flow heat exchange unit |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000171181A (en) * | 1998-12-01 | 2000-06-23 | Mitsubishi Electric Corp | Heat pipe |
| US20040011509A1 (en) * | 2002-05-15 | 2004-01-22 | Wing Ming Siu | Vapor augmented heatsink with multi-wick structure |
| JP2004053062A (en) * | 2002-07-17 | 2004-02-19 | Nec Toshiba Space Systems Ltd | Evaporator for loop heat pipe, and its heat exchange method |
| JP4434677B2 (en) * | 2003-09-29 | 2010-03-17 | 株式会社ウェルリサーチ | Loop heat pipe evaporator |
-
2005
- 2005-07-18 CN CNB2005100191118A patent/CN100334931C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997729B (en) * | 2012-12-24 | 2016-03-30 | 天津商业大学 | Heat pipe radiator of phase change drive loop |
| CN102997729A (en) * | 2012-12-24 | 2013-03-27 | 天津商业大学 | Heat pipe radiator of phase change drive loop |
| CN106288530A (en) * | 2016-08-19 | 2017-01-04 | 中国航天空气动力技术研究院 | A kind of vaporizer of loop circuit heat pipe and preparation method thereof |
| CN106288530B (en) * | 2016-08-19 | 2019-08-09 | 中国航天空气动力技术研究院 | A kind of evaporator of loop circuit heat pipe and preparation method thereof |
| CN107024128B (en) * | 2017-04-21 | 2019-06-14 | 成都东浩散热器有限公司 | A kind of radiator of cooling fin interior bone |
| CN106989627A (en) * | 2017-04-21 | 2017-07-28 | 成都东浩散热器有限公司 | Based on outdoor environment-friendly type temperature regulation structure |
| CN107024128A (en) * | 2017-04-21 | 2017-08-08 | 成都东浩散热器有限公司 | A kind of heat abstractor of fin interior bone |
| CN107687783A (en) * | 2017-07-18 | 2018-02-13 | 华南理工大学 | A kind of miniature loop circuit heat pipe and method |
| CN107466186A (en) * | 2017-07-31 | 2017-12-12 | 华中科技大学 | A kind of novel evaporator structure and its application |
| CN107466186B (en) * | 2017-07-31 | 2019-09-13 | 华中科技大学 | A kind of novel evaporator structure and its application |
| CN107702574A (en) * | 2017-09-25 | 2018-02-16 | 华中科技大学 | A kind of longitudinal liquid-supply evaporator |
| CN108489312A (en) * | 2018-03-12 | 2018-09-04 | 上海利正卫星应用技术有限公司 | The loop heat pipe evaporator and loop circuit heat pipe of high heat flux density adaptability |
| CN108507839B (en) * | 2018-05-25 | 2020-07-24 | 安徽工业大学 | Constant-temperature sampling method for settling furnace |
| CN108507839A (en) * | 2018-05-25 | 2018-09-07 | 安徽工业大学 | sedimentation furnace constant temperature sampling method |
| CN109148916A (en) * | 2018-09-05 | 2019-01-04 | 中国电子科技集团公司信息科学研究院 | A kind of heat drive fuel cell system |
| CN108917443A (en) * | 2018-09-05 | 2018-11-30 | 中国电子科技集团公司信息科学研究院 | A kind of flat-plate minitype loop circuit heat pipe of stacked in layers structure |
| CN109148916B (en) * | 2018-09-05 | 2021-03-16 | 中国电子科技集团公司信息科学研究院 | Thermal drive fuel cell system |
| CN112272488A (en) * | 2020-09-25 | 2021-01-26 | 奇鋐科技股份有限公司 | Gas-liquid phase flow heat exchange unit |
| CN112272488B (en) * | 2020-09-25 | 2023-08-22 | 奇鋐科技股份有限公司 | Gas-liquid phase flow heat exchange unit |
| 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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| CN100334931C (en) | 2007-08-29 |
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Granted publication date: 20070829 Termination date: 20110718 |