CN1725946A - Plane capillary core evaporimeter for CPL - Google Patents
Plane capillary core evaporimeter for CPL Download PDFInfo
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- CN1725946A CN1725946A CN 200510019110 CN200510019110A CN1725946A CN 1725946 A CN1725946 A CN 1725946A CN 200510019110 CN200510019110 CN 200510019110 CN 200510019110 A CN200510019110 A CN 200510019110A CN 1725946 A CN1725946 A CN 1725946A
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Abstract
A planar capillary core evaporator for CPL consists of base, top cover being fixed and sealed with base, an isolation plate for isolating top cover to liquid and steam collection cavity, the liquid collection cavity formed by horizontal and longitudinal channels and cross arranged and opened with return liquid inlet on it, steam collection cavity opened with vapor outlet, top cover longitudinal steam channel being connected to steam cavity and capillary core set between two cavities.
Description
Technical field
The present invention relates to the capillary core evaporator of a kind of CPL of being used for.
Background technology
CPL (Capillary Pumped Loop: capillary pump suction two-phase fluid loop) be a kind of device that utilizes the latent heat of phase change transmission heat of working medium, it has that heat-transfer capability is big, temperature-controlled precision is high, energy consumption is low and advantage such as isothermal is good, is the idealized system of 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, and in the evaporator capillary structure, liquid working substance is heated and vaporizes, and removes heat from thermal source; In condenser, vapour phase working medium is condensed, and conducts heat to the external world, and 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.
At present, the evaporator that is used for CPL mainly is a tubular evaparator, 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.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part, the 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 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 base, and liquid collecting cavity is made of and arranged crosswise lateral channel and longitudinal channels, has the withdrawing fluid inlet on liquid collecting cavity, has steam (vapor) outlet on steam collecting cavity; Have steam conduit, steam channel last covering, 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) is suitable for the heat radiation requirement of loading
The present invention is the plane formula evaporator, can directly fit on the surface that is cooled, and has reduced contact heat resistance, has improved the heat transfer efficiency of system, and more compact structure is used more convenient.
(2) CPL starts rapidly
The evaporator loam cake adopts the bigger metal material of conductive coefficient, steam conduit fin closely contacts with the capillary wick upper surface, make the liquid working substance of capillary wick upper surface be heated to saturation temperature rapidly, produce steam, absorb heat, the steam that produces flows into steam collecting cavity swimmingly by the steam conduit, flows out by steam (vapor) outlet then, and it is easy, rapid that CPL starts.
(3) avoid vapour occurring, liquid is carried phenomenon secretly
If steam conduit exit is entrained with liquid, then liquid can be collected in the steam collecting cavity, and steam collecting cavity plays the effect of vapour, liquid isolator, prevents that vapour, liquid from carrying phenomenon secretly, makes system stable.
(4) feed flow is continuous, even, stable
Base of evaporator adopts the liquid collecting cavity structure, on the one hand withdrawing fluid is compiled therein, and owing to the shunting action of conduit, liquid can be distributed to capillary wick preferably on the other hand, to satisfy the needs of evaporation; In the liquid collecting cavity conduit, can accumulate certain amount of fluid, play the effect in compensating liquid chamber, thereby, when system's heat load changes, liquid working substance in the liquid collecting cavity conduit can be supplied with capillary wick in time, to satisfy the required working medium amount of load, scarce liquid of system or burning can not occur and exhaust phenomenon.
(5) 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 structural representation of base among Fig. 1.
Fig. 4 is the vertical view of base among Fig. 1.
Fig. 5 is the structural representation of loam cake among Fig. 1.
Fig. 6 is the upward view of loam cake among Fig. 1.
Drawing explanation: 1-withdrawing fluid inlet, 2-liquid collecting cavity, 3-base, 4-loam cake, 5-capillary wick, 6-steam conduit, 7-steam channel, 8-heating surface, 9-steam (vapor) outlet, 10-steam collecting cavity, 11-steam conduit fin, 12-dividing plate, 13-liquid collecting cavity fin.
Embodiment
By Fig. 1～shown in Figure 6, the present invention is a kind of planar structure on the whole, comprise base 3, loam cake 4, capillary wick 5, base 3 fixes and seals with loam cake 4, can take welding manner, can also adopt the flange bolt bind mode, seal form adopts the sealing of O type circle, adopt this kind mode can change capillary wick 5 easily, reduce the development cost of system.
In order to improve the radiating efficiency of evaporator, loam cake 4 uses the big metal material of conductive coefficient, as adopting copper, aluminium etc.Capillary wick 5 can be formed or be formed by the dusty material sintering by the multi-layer silk screen compacting, and capillary wick 5 is the important component parts of evaporator, and the capillary suction force that vaporization phase transformation generation takes place on its surface liquid phase working fluid is the main drive of system's operation.In the CPL system, the degree of subcooling of inlet withdrawing fluid is high more, the bearing capacity of system and service behaviour are good more, and in order to reduce the conductive force of heat load to the inlet withdrawing fluid, capillary wick 5 adopts smaller stainless steel cloth of conductive coefficient or the compacting of nonmetal high polymer silk screen multilayer to form.
Dividing plate 12 is divided into liquid collecting cavity 2, steam collecting cavity 10 with base 3, liquid collecting cavity 2 is made of and arranged crosswise a lateral channel and seven longitudinal channels, can collect a certain amount of liquid phase working fluid, shunts to both sides by lateral channel, the double as fluid distributor distributes withdrawing fluid uniformly.Have withdrawing fluid inlet 1 in the bottom, withdrawing fluid inlet 1 communicates with liquid collecting cavity 2, has steam (vapor) outlet 9 on the Side of steam collecting cavity 10 face.Liquid collecting cavity 2 longitudinal channels are a plurality of, and lateral channel also can be a plurality of, and lateral channel and longitudinal channels can be orthogonal, also can out of plumb, and the section configuration of described lateral channel and longitudinal channels is a rectangle, also can be trapezoidal other shape that waits.
Have steam conduit 6, steam channel 7 at loam cake 4, the position of steam conduit 6 is corresponding with liquid collecting cavity 2, is made of seven longitudinal channels.Steam channel 7 is communicated with steam conduit 6 and steam collecting cavity 10.Steam conduit 6 longitudinal channels are a plurality of.The section configuration of described longitudinal channels is a rectangle, also can be trapezoidal other shape that waits.
During work, the heating surface 8 of loam cake 4 is directly fitted with the load surface, and heating surface 8 absorbs heat, and heat passes to each steam conduit fin 11 rapidly, like this with capillary wick 5 that steam conduit fin 11 directly contacts in liquid working substance be heated to saturation temperature rapidly, vaporize.The steam that the vaporization back forms flow to steam collecting cavity 10 along steam conduit 6, enters jet chimney by steam (vapor) outlet 9, flows to condenser, if be entrained with drop, then can be collected in the steam collecting cavity 10.After in condenser, emitting heat, vapor condenses is a liquid, then under the effect of the capillary suction force that capillary wick working medium vapour, the liquid phase sell of one's property are given birth to, enter the liquid collecting cavity 2 of evaporator through withdrawing fluid inlet 1 along fluid pipeline, liquid working substance is under the effect of the fluid distributor that liquid collecting cavity 2 forms, uniform distribution in liquid collecting cavity 2 enters capillary wick 5, flow to that vapour, liquid phase become the boundary and.
Claims (2)
1. plane type capillary core evaporator that is used for CPL is characterized in that:
Comprise base (3), loam cake (4), capillary wick (5), base (3) fixes and seals with loam cake (4);
Dividing plate (12) is divided into liquid collecting cavity (2), steam collecting cavity (10) with base (3), liquid collecting cavity (2) is made of and arranged crosswise lateral channel and longitudinal channels, on liquid collecting cavity (2), have withdrawing fluid inlet (1), on steam collecting cavity (10), have steam (vapor) outlet (9);
Have steam conduit (6), steam channel (7) on loam cake (4), steam conduit (6) is made of longitudinal channels, and steam channel (7) is communicated with steam conduit (6) and steam collecting cavity (10);
Capillary wick (5) places between liquid collecting cavity (2) and the steam conduit (6).
2. the plane type capillary core evaporator that is used for CPL according to claim 1 is characterized in that: capillary wick (5) is formed by the multi-layer silk screen compacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100191103A CN100334930C (en) | 2005-07-18 | 2005-07-18 | Plane capillary core evaporimeter for CPL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100191103A CN100334930C (en) | 2005-07-18 | 2005-07-18 | Plane capillary core evaporimeter for CPL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1725946A true CN1725946A (en) | 2006-01-25 |
| CN100334930C CN100334930C (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100191103A Expired - Fee Related CN100334930C (en) | 2005-07-18 | 2005-07-18 | Plane capillary core evaporimeter for CPL |
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| CN (1) | CN100334930C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261862A (en) * | 2011-07-01 | 2011-11-30 | 中兴通讯股份有限公司 | Flat heat pipe heat exchanger |
| 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 |
| CN108253673A (en) * | 2017-12-18 | 2018-07-06 | 北京空间机电研究所 | For the passive cooling capillary drain pipe and method of two-phase fluid circuit liquid storage device |
| CN108266929A (en) * | 2017-12-18 | 2018-07-10 | 北京空间机电研究所 | For the precise temperature control type liquid storage device and method in driven by mechanical pump two-phase fluid circuit |
| CN108955326A (en) * | 2018-07-12 | 2018-12-07 | 上海交通大学 | Microchannel gas-Liquid separating evaporator device based on distribution recovery approach |
| CN109539841A (en) * | 2018-11-15 | 2019-03-29 | 珠海格力电器股份有限公司 | Evaporator for loop heat pipe, loop heat pipe system and electric appliance |
| CN110822964A (en) * | 2019-12-11 | 2020-02-21 | 深圳市翌昇科技发展有限公司 | Heat conduction device |
| CN111417285A (en) * | 2020-03-23 | 2020-07-14 | 西安交通大学 | Unit type cold plate |
| CN112414189A (en) * | 2020-11-02 | 2021-02-26 | 华中科技大学 | Flat evaporator suitable for cast capillary core |
| CN113340138A (en) * | 2021-07-02 | 2021-09-03 | 珠海德标光电科技有限公司 | Vapor chamber based on evaporation-boiling conversion and preparation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2189726Y (en) * | 1994-03-12 | 1995-02-15 | 南京江南热能工程系统公司 | Hot-pipe semi-conductor refrigerating device |
| JP2000171181A (en) * | 1998-12-01 | 2000-06-23 | Mitsubishi Electric Corp | Heat pipe |
| 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 CNB2005100191103A patent/CN100334930C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261862A (en) * | 2011-07-01 | 2011-11-30 | 中兴通讯股份有限公司 | Flat heat pipe heat exchanger |
| CN102261862B (en) * | 2011-07-01 | 2016-04-13 | 中兴通讯股份有限公司 | A kind of Flat heat pipe heat exchanger |
| 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 |
| CN108253673A (en) * | 2017-12-18 | 2018-07-06 | 北京空间机电研究所 | For the passive cooling capillary drain pipe and method of two-phase fluid circuit liquid storage device |
| CN108266929A (en) * | 2017-12-18 | 2018-07-10 | 北京空间机电研究所 | For the precise temperature control type liquid storage device and method in driven by mechanical pump two-phase fluid circuit |
| CN108253673B (en) * | 2017-12-18 | 2020-12-18 | 北京空间机电研究所 | Passive cooling capillary drain pipe and method for two-phase fluid loop reservoir |
| CN108266929B (en) * | 2017-12-18 | 2020-09-18 | 北京空间机电研究所 | Precise temperature control type liquid storage device for mechanical pump driving two-phase fluid loop and assembling method |
| CN108955326B (en) * | 2018-07-12 | 2020-03-17 | 上海交通大学 | Micro-channel gas-liquid separation evaporator device based on distribution and recovery channel |
| CN108955326A (en) * | 2018-07-12 | 2018-12-07 | 上海交通大学 | Microchannel gas-Liquid separating evaporator device based on distribution recovery approach |
| CN109539841A (en) * | 2018-11-15 | 2019-03-29 | 珠海格力电器股份有限公司 | Evaporator for loop heat pipe, loop heat pipe system and electric appliance |
| CN110822964A (en) * | 2019-12-11 | 2020-02-21 | 深圳市翌昇科技发展有限公司 | Heat conduction device |
| CN111417285A (en) * | 2020-03-23 | 2020-07-14 | 西安交通大学 | Unit type cold plate |
| CN112414189A (en) * | 2020-11-02 | 2021-02-26 | 华中科技大学 | Flat evaporator suitable for cast capillary core |
| CN113340138A (en) * | 2021-07-02 | 2021-09-03 | 珠海德标光电科技有限公司 | Vapor chamber based on evaporation-boiling conversion and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100334930C (en) | 2007-08-29 |
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Granted publication date: 20070829 Termination date: 20110718 |