CN106838843A - A kind of high-powered LED lamp cooling system - Google Patents
A kind of high-powered LED lamp cooling system Download PDFInfo
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- CN106838843A CN106838843A CN201510877001.9A CN201510877001A CN106838843A CN 106838843 A CN106838843 A CN 106838843A CN 201510877001 A CN201510877001 A CN 201510877001A CN 106838843 A CN106838843 A CN 106838843A
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- evaporator
- liquid
- pipe
- led lamp
- cooling system
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Abstract
The invention discloses a kind of high-powered LED lamp cooling system, cooling system includes evaporator, vapor transport pipe, liquid transporting pipe and condensing unit, vaporization chamber inside the evaporator includes many hollow structures, the vapor transport pipe and liquid transporting pipe are common copper tube, and internal system fluid flow resistance can be operationally greatly reduced.Power equipment provided in an embodiment of the present invention includes cooling system, high-powered LED lamp and pentane.The high-powered LED lamp cooling system that the present invention is provided, can realize that vaporising device mutually splits with condensing unit, vaporising device is arranged on inside lampshade, and condensing unit is arranged on outside lampshade, when regular maintenance is carried out, vaporising device is separated with condensing unit, is capable of achieving that lampshade is inside and outside safeguards respectively, be rapidly completed maintenance cleaning work.
Description
Technical field
The present invention relates to heat abstractor, more particularly to a kind of LED heat abstractors.
Background technology
Compared with the maximum high-pressure mercury lamp of the usage amount in road lighting, great power LED has that colour temperature is optional, luminous efficiency is high as lighting device, without high pressure, super brightness, colour rendering be high and the advantage such as long-life.Heat dissipation problem is the biggest obstacle for limiting high-power LED illumination application.
Inside LED lamp, increase area of dissipation, treatment is carried out to spreader surface radiating efficiency is provided, the limitation of LED lamp appearance and size is limited to require, area of dissipation cannot increase, and heat-removal modalities optimal cannot cause the current luminous flux cannot to be done greatly with power so that when comparing with conventional lamp, deficiency in terms of brightness, phase-change material（PCM）During itself undergoes phase transition, the heat of environment can be absorbed（It is cold）Amount, and when needed to environment releasing heat（It is cold）Amount, so as to reach the purpose of control ambient temperature.Material phase transition process is that an isothermal or approximate constant temperature process, the in this process absorption with energy or release phase-change thermal storage are using phase-change material in its phase transition process, to be absorbed from environment or release heat, reaches the purpose of energy storage or exoergic.Due to these excellent properties of phase-change material, the preparation for using it for LED lamp radiator will be so that LED lamp has preferable performance.But when existing phase-change material is applied to LED lamp radiator, because conventional phase-change material temperature control range does not use scope in LED lamp, energy storage and heat-conducting effect be not obvious, and thermal resistance is big under high temperature.
Heat-pipe radiator in the prior art, generally comprise evaporator, compensator, the condenser for being connected to become an entirety, by heat pipe, each part connects into loop by more than, and the power provided for the gas-liquid backflow in loop using capillarity, the thermal conducting function between radiator and condenser is realized by loop backflow.
Realize it is of the invention during, inventor find prior art at least there is problems with：Because existing heat-pipe radiator is an overall structure, itself volume is larger, when in the equipment such as rack, generally require and be partially installed on outside rack, another part is then arranged on interior of equipment cabinet, in regular maintenance, it is inside and outside to be required to safeguard, due to non-dismountable, cause the maintenance of each part of heat-pipe radiator extremely inconvenient, while waste of manpower, maintenance cleaning work is also set to carry out slowly.
The content of the invention
For the shortcoming for overcoming prior art to exist and a kind of not enough, LED heat abstractors of present invention offer.
The technical solution adopted by the present invention is as follows：
The cooling system includes evaporator, vapor transport pipe, liquid transporting pipe and condenser, the two ends of the evaporator are connected with described vapor transport pipe, liquid transporting pipe respectively, the two ends of the condenser are connected with described vapor transport pipe, liquid transporting pipe respectively, and the evaporator is contacted with great power LED lamp substrate.
Specifically, the chamber has double-deck liquid-sucking core and a flute profile copper coin for bottom belt inner passage, is conducive to gathering for steam.
In both cases, main liquid-sucking core has less hole size, to provide larger evaporation surface, and secondary liquid-sucking core has larger hole, and ensuring that the upper wall of enough pumping evaporator chambers is made of stainless steel, the main liquid-sucking core of the evaporator is the Porous Cu that 1.5mm thickness porositys are 50%.
The liquid-sucking core is fixed on flute profile copper coin to increase thermal contact conductance by way of sintering.Secondary liquid-sucking core is bonded by the stainless (steel) wire of two-layer 5mm thickness porositys 85% and formed, hydraulically full always in liquid supplement pipe because the capillary pressure in secondary liquid-sucking core is lower than main liquid-sucking core, promotes main suction night pipe to keep wetting, while the unnecessary worker quality liquid of storage.
The course of work of the invention：
LED chip produces heat, substrate to press close to the rising of chip-side temperature, and the high temperature that high-powered LED lamp is produced is conducted to evaporator, heated liquid vaporization in evaporator is become steam, and steam moves the evaporation ends that high temperature is taken to condenser 4 along vapor transport pipe upwards（Be connected one end with vapor transport pipe）, at the same time, condensing unit 6 by Conduction At Low Temperature to condenser 4 condensation end（Be connected one end with liquid transporting pipe）, the steam cooling liquid at condenser internal condensation end simultaneously acts on the evaporation ends of flow back fluid delivery tube 5 by Action of Gravity Field and heat pipe capillary（Be connected one end with evaporator）.
Beneficial effects of the present invention：
（1）Compared with conventional heat pipe, only vaporization chamber is connected with porous wick structure in the cooling system in the present invention --- and the transportation route of liquid and steam is that conventional pipeline has no porous wick structure, the flow resistance reduction 60-70% of fluid in cooling system.This is greatly reduced the pressure drop that liquid returns to evaporation ends from condensation end, and capillarity is easier to make for.Condensation end and evaporation ends apart from each other can be placed, and condenser can be placed on beyond electronic product, such that it is able to reduce the limitation of system dimension.Transport line and condenser are to be formed from aluminium, and are preferably minimized the gross weight of heat abstractor, nearly weigh 450g.
（2）Using double-deck liquid sucting core structure, devaporation efficiency is increased, improve the evaporation efficiency of evaporator, cooling system peak power of the invention is no more than 50 DEG C up to 170W, node temperature, it is ensured that the stabilization of high-powered LED lamp.
Brief description of the drawings
Fig. 1 is complete high-power LED heat-dissipating system composition schematic diagram.
Fig. 2 is vaporization chamber profile.
Shown in figure：
1- high-powered LED lamps, 2- evaporators, 3- vapor transport pipes, 4- condensers, 5- liquid transporting pipes；
2-1 liquid-sucking core, the main liquid-sucking cores of 2-2,2-3 evaporation locular walls, 2-4 evaporation cavities.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As shown in figure 1, in a first aspect, the embodiment of the invention provides a kind of heat pipe radiating system, for being radiated to high-powered LED lamp 1, the heat pipe radiating system includes：Evaporator 2, vapor transport pipe 3, condenser 4 and liquid transporting pipe 5, the evaporation ends 2-4 of evaporator 2 are contacted with the substrate of high-powered LED lamp 1, and vapor transport pipe 3 is connected with liquid transporting pipe 5 by condenser 4.
As shown in Figure 1, when heat pipe radiating system works, the substrate of LED 1 is brought into close contact by Heat Conduction Material with evaporator 2 and contacted, the generation high temperature of high-powered LED lamp 1 is conducted to evaporator 2, the heated liquid of evaporation ends in evaporator 2 is set to be vaporizated into steam, steam moves the evaporation ends that high temperature is taken to condenser 4 along vapor transport pipe upwards（Be connected one end with vapor transport pipe）, at the same time, condensing unit 6 by Conduction At Low Temperature to condenser 4 condensation end（Be connected one end with liquid transporting pipe）, the steam cooling liquid at condenser internal condensation end simultaneously acts on the evaporation ends of flow back fluid delivery tube 5 by Action of Gravity Field and heat pipe capillary（Be connected one end with evaporator）.
As shown in figure 1, when staff's opposite heat tube cooling system carries out Maintenance and Repair, high-powered LED lamp 1 is separated with evaporator 2, cooling system and high-powered LED lamp 1 together carry out Maintenance and Repair, facilitate easy to operate.
Heat pipe radiating system provided in an embodiment of the present invention includes condenser-reboiler tubular liquid transportation route, and the vaporization chamber of evaporator has double-deck liquid-sucking core, and bottom land copper dish have inner passage to assist steam to collect.As shown in Fig. 2 evaporator 2 includes a vaporization chamber for rectangle, heat is delivered to main liquid-sucking core 2-2 by heating surface, along vaporization chamber liquid-sucking core inwall substrate（And tube wall）Lateral transport enters evaporation cavity 2-4, so as to collect into vapor transport pipe 3.In this way, the heat transfer area and heat-transfer path between thermal source 1 and the entrance of liquid transporting pipe 5 are both increased, reduce and reach the heat amount that liquid transporting closes entrance, such that it is able to alleviate unstable situation when cooling system just starts.Evaporation cavity（Steam pooling zone）2-4 at vaporization chamber center, away from the interface between heating plate/liquid sucting core structure, so as to reduce thermodynamics thermal resistance therebetween.Main liquid-sucking core is all miniature porous material for evaporation provides larger surface area, and secondary liquid-sucking core aperture is larger providing enough power.
As shown in Figure 1, the embodiment of the invention provides a kind of heat pipe radiating system, wherein, evaporator 2 can be using the good metallic plate of thermal conductivity or the sheet material of other materials with condenser 4, while the thermal contact resistance in order to reduce high-powered LED lamp 1 and the contact surface of evaporator 2, contact surface must be smooth, and scribbles the Heat Conduction Materials such as heat-conducting silicone grease.
Further, as shown in figure 1, the embodiment of the invention provides a kind of heat pipe radiating system, the vapor transport pipe 3 and liquid transporting pipe 5 use external diameter 8mm, the aluminum pipe of internal diameter 6.6mm.
Further, as shown in Fig. 2 the embodiment of the invention provides a kind of heat pipe radiating system, the heat pipe radiating system also includes liquid-sucking core, and main liquid-sucking core is porous metal copper, and aperture is about 45 μm, and thickness is 1.5mm.Secondary liquid-sucking core is stainless (steel) wire, and mesh size is 100 μm, and thickness is 7mm.
As preferred, the heat pipe radiating system that the present invention is provided can be in the form of annular heat pipe be arranged in parallel in multigroup Fig. 1, and the evaporation ends of multigroup endless loop heat pipe being arranged in parallel are connected in embedded mode with electro-heat equipment 1, and the condensation end of multigroup endless loop heat pipe being arranged in parallel is connected in embedded mode with condensing unit 6, to improve scattered ability.Simultaneously because being provided with multigroup loop circuit heat pipe between electro-heat equipment and condensing unit, it is capable of achieving every group of heat pipe individually maintenance or replacing, and in the case of having the damage of single group heat pipe inoperable, also other heat pipes can be worked on, and heat pipe radiating system will not be made to be stopped；And the present embodiment is used in parallel using 5-8 root loop circuit heat pipes, to reach the heat-sinking capability of 5KW, 1-2 roots are added in addition as design redundancy to reduce the influence after contingency has loop circuit heat pipe to fail to system radiating.
The optional endless loop heat pipe scheme of the present invention, several times are lifted than conventional heat pipe heat-sinking capability, single loop heat pipe heat dissipation ability up to 170W, by parallel more with loop circuit heat pipe, it is possible to resolve high-powered LED lamp heat dissipation problem；Vapor transport pipe, liquid transporting pipe in cooling system in the present invention use common copper pipe, without loose structure, the flow resistance reduction 60-70% of fluid in cooling system；Using double-deck liquid sucting core structure, devaporation efficiency is increased, improve the evaporation efficiency of evaporator, cooling system peak power of the invention is no more than 50 DEG C up to 170W, node temperature, it is ensured that the stabilization of high-powered LED lamp.
Above-described embodiment is the present invention preferably implementation method; but embodiments of the present invention are simultaneously not restricted by the embodiments; it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification; equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (4)
1. a kind of high-powered LED lamp cooling system, it is characterized in that, the cooling system includes evaporator, vapor transport pipe, liquid transporting pipe and condenser, the two ends of the evaporator are connected with described vapor transport pipe, liquid transporting pipe respectively, the two ends of the condenser are connected with described vapor transport pipe, liquid transporting pipe respectively, and the evaporator is contacted with great power LED lamp substrate.
2. heat pipe radiating system according to claim 1, it is characterised in that the evaporator includes main liquid-sucking core, secondary liquid-sucking core and evaporation cavity, and the evaporator wall inner side is trench structure.
3. heat pipe radiating system according to claim 2, it is characterised in that the main liquid-sucking core is made up of porous metal copper, described liquid-sucking core is the netted structure of stainless steel fibre, and the evaporation cavity is the copper coin that the bottom with inner passage is flute profile.
4. heat pipe radiating system according to claim 2, it is characterised in that the main liquid-sucking core is that flute profile copper coin is attached to by way of sintered bonds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877001.9A CN106838843A (en) | 2015-12-03 | 2015-12-03 | A kind of high-powered LED lamp cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877001.9A CN106838843A (en) | 2015-12-03 | 2015-12-03 | A kind of high-powered LED lamp cooling system |
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| CN106838843A true CN106838843A (en) | 2017-06-13 |
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| CN201510877001.9A Pending CN106838843A (en) | 2015-12-03 | 2015-12-03 | A kind of high-powered LED lamp cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112153863A (en) * | 2020-09-17 | 2020-12-29 | 南通大学 | Heat radiation assembly |
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| CN101672592A (en) * | 2009-10-16 | 2010-03-17 | 中国科学院上海技术物理研究所 | Miniaturized loop heat pipe |
| CN101694358A (en) * | 2009-10-22 | 2010-04-14 | 华东理工大学 | Efficient corrosion-proof lightweight heat pipe |
| CN102109257A (en) * | 2010-08-05 | 2011-06-29 | 中国科学院理化技术研究所 | Low-temperature loop heat pipe device |
| CN203672209U (en) * | 2014-01-21 | 2014-06-25 | 厦门大学 | Miniature capillary pump ring with capillary wick structure of gradient pore structure |
| CN103994682A (en) * | 2014-05-07 | 2014-08-20 | 江苏科技大学 | Heat pipe and manufacturing method thereof |
| CN104089509A (en) * | 2014-07-21 | 2014-10-08 | 厦门大学 | Capillary pumped loop |
| CN104613440A (en) * | 2015-03-03 | 2015-05-13 | 中国科学院工程热物理研究所 | Heat dissipation device of remote LED lamp |
-
2015
- 2015-12-03 CN CN201510877001.9A patent/CN106838843A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672592A (en) * | 2009-10-16 | 2010-03-17 | 中国科学院上海技术物理研究所 | Miniaturized loop heat pipe |
| CN101694358A (en) * | 2009-10-22 | 2010-04-14 | 华东理工大学 | Efficient corrosion-proof lightweight heat pipe |
| CN102109257A (en) * | 2010-08-05 | 2011-06-29 | 中国科学院理化技术研究所 | Low-temperature loop heat pipe device |
| CN203672209U (en) * | 2014-01-21 | 2014-06-25 | 厦门大学 | Miniature capillary pump ring with capillary wick structure of gradient pore structure |
| CN103994682A (en) * | 2014-05-07 | 2014-08-20 | 江苏科技大学 | Heat pipe and manufacturing method thereof |
| CN104089509A (en) * | 2014-07-21 | 2014-10-08 | 厦门大学 | Capillary pumped loop |
| CN104613440A (en) * | 2015-03-03 | 2015-05-13 | 中国科学院工程热物理研究所 | Heat dissipation device of remote LED lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112153863A (en) * | 2020-09-17 | 2020-12-29 | 南通大学 | Heat radiation assembly |
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Application publication date: 20170613 |