CN102767809A - High-power LED (light emitting diode) heat radiator - Google Patents
High-power LED (light emitting diode) heat radiator Download PDFInfo
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- CN102767809A CN102767809A CN2012102437019A CN201210243701A CN102767809A CN 102767809 A CN102767809 A CN 102767809A CN 2012102437019 A CN2012102437019 A CN 2012102437019A CN 201210243701 A CN201210243701 A CN 201210243701A CN 102767809 A CN102767809 A CN 102767809A
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Abstract
The invention belongs to the technical field of high heat flux density electronic elements and relates to a high-power LED (light emitting diode) heat radiator, wherein an outer wall of a cylindrical heat conduction cavity is fixedly connected with 4-16 ring-shaped fins; one divergent oscillating-flow heat pipe is coaxially and fixedly connected to each fin; a heating section of the divergent oscillating-flow heat pipe is arranged in a cavity body of the heat conduction cavity after passing through the outer wall of the heat conduction cavity; the divergent oscillating-flow heat pipe is fixedly and hermetically connected with the outer wall of the heat conduction cavity; a round LED base is coaxially and fixedly connected to the lower end face of the heat conduction cavity; an LED chip is fixedly connected to the centre of the LED base; a sealed container is used as the heat conduction cavity, and heat conduction media are filled in the heat conduction cavity. With the adoption of the united running of the divergent oscillating-flow heat pipe and the heat conduction cavity filled with low boiling-point heat conduction medium or heat conduction oil, heat generated by the LED is released in time, so that the heat radiator is an efficient, portable and beautiful high-power LED heat radiator which is suitable for the radiation of high heat flux density electronic elements and particularly suitable for the heat radiation of high-power LEDs.
Description
Technical field
The invention belongs to high heat flux electronic component technology field, particularly a kind of high-power LED radiator.
Background technology
LED (Light Emitting Diode, light emitting diode) is as a kind of emerging light-emitting component, because its energy-saving and environmental protection, high brightness, advantage such as low in calories in the present age of energy-conserving and environment-protective, are just advocated energetically both at home and abroad and promoted.The surface temperature of LED can produce the accumulation of heat and constantly raises with when work, and especially for high-power LED, heat dissipation problem is particularly important; If the heat of its generation can not in time be pulled away; Will influence its luminous efficiency, its service life is shortened in wearing out of speed-up chip.Great power LED product in the market is employed in the method that installs fin on the substrate additional usually and dispels the heat; Increase along with LED power; The size of its heat abstractor is also increasing, and difficulty of processing and cost also increase thereupon, meanwhile; It is increasing that the quality of heat abstractor also becomes, and these factors have restricted the development of great power LED.
Oscillating flow heat pipe is as a kind of high-performance heat transfer components, and compared following outstanding advantage with conventional heat pipe: caliber is little, and volume is little, augmentation of heat transfer; Do not need capillary wick, simple in structure, cost is low; Reliable, liquid backflow adaptivity is strong, is difficult for dryouting; Start rapidly; Can be arbitrarily crooked, applied range; Can adopt different mode of heatings and heating location.Its structure and operation principle and conventional heat pipe are very different.Different with conventional heat pipe, oscillating flow heat pipe inside is not simple phase-change heat transfer, but integrates sensible heat heat transfer, phase-change heat transfer, expansion work, relates to gas-liquid two-phase streaming system multidisciplinary, multi-parameter.Along with the develop rapidly of electronic technology, the densification of the high frequency of electronic component, high speed and integrated circuit and miniaturization cause the heat flow density of unit are to increase progressively rapidly, reach MW/m
2Or the above order of magnitude, so require to seek the heat dissipation problem that a kind of novel technology solves high heat flux.And the oscillating flow heat pipe technology also is the trend of studying in recent years in the application aspect refrigeration, the waste heat recovery.
Conduction oil is a kind of transmission medium of heat, because it has homogeneous heating, temperature adjustment control temperature accurately; Can under low-steam pressure, produce high temperature, heat-transfer effect is good, and is energy-conservation; Carry and characteristics such as easy to operate, be widely used in various occasions in recent years, and its purposes and consumption get more and more.In addition, low boiling working fluids such as distilled water, ethanol, acetone or cold-producing medium R141b also are used widely because of its stronger phase-change heat transfer ability.
Therefore utilize the thermal conductive cavity of filling conduction oil, low boiling working fluid to come heat-obtaining, utilizing oscillating flow heat pipe to dispel the heat is high-power LED radiator preferred plan.
Summary of the invention
The object of the invention is to solve big, the insufficient problem of dispelling the heat of LED radiator difficulty of processing height, size described in the background technology; Utilize the thermal conductive cavity of filling conduction oil to come heat-obtaining, utilizing oscillating flow heat pipe to dispel the heat provides a kind of high-power LED radiator, it is characterized in that; The fin 2 of affixed 4～16 annulars of level on the outer wall of columniform thermal conductive cavity 1; Coaxial affixed 1 divergence expression oscillating flow heat pipe 3 has 1 wire guide 4 on the every fin 2 on the fin 2, and all the wire guide 4 on the fin 2 is on same vertical line; The outer wall that the bringing-up section of divergence expression oscillating flow heat pipe 3 is passed thermal conductive cavity 1 places in the cavity of thermal conductive cavity 1; Divergence expression oscillating flow heat pipe 3 is affixed with the outer wall sealing of thermal conductive cavity 1, and the external diameter of divergence expression oscillating flow heat pipe 3 is linked up with pedestal 6 and the thermal conductive cavity 1 coaxial top that is fixed in thermal conductive cavity 1 less than the external diameter of fin 2; Rotary hanging hook 5 is rotationally connected with the end face of hook pedestal 6; Circular LED pedestal 7 is coaxial to be fixed on the lower surface of thermal conductive cavity 1, and led chip 8 is fixed in the center of LED pedestal 7, and the heat-conducting medium filling is in thermal conductive cavity 1;
Said thermal conductive cavity 1 is a closed container, vacuumizes before the thermal conductive cavity 1 filling heat-conducting medium, filling heat-conducting medium and sealing again.
Said fin 2 is that welding or heat-conducting glue are bonding with divergence expression oscillating flow heat pipe 3 affixed modes;
The material of said thermal conductive cavity 1 and LED pedestal 7 is copper or aluminium;
The material of said fin 2 is copper or aluminium;
Said divergence expression oscillating flow heat pipe 3 is that 12～24 petal-like lists of elbow prop up the loop type oscillating flow heat pipe, and divergence expression oscillating flow heat pipe 3 capillary materials are copper pipe;
Vacuumize before the said thermal conductive cavity 1 filling heat-conducting medium, vacuum is 10
-1～10
-2Pa;
The charging quantity of said heat-conducting medium be thermal conductive cavity 1 volume 40～60%.
Said heat-conducting medium is a conduction oil, perhaps is distilled water, ethanol, acetone or the cold-producing medium R141b of low boiling working fluid.
The present invention adopts the combining structure of fin and oscillating flow heat pipe, and fin had both played the effect of heat radiation, plays the supporting role to divergence expression oscillating flow heat pipe 3 again.Adopt the divergence expression oscillating flow heat pipe that the heat in the heat-conducting medium is efficiently derived, at the condensation segment and the fin distribute heat of oscillating flow heat pipe.
The heat that the present invention produces when working LED through the heat-conducting medium in the thermal conductive cavity is earlier taken away rapidly in time, by the oscillating flow heat pipe that dispels the heat efficiently this part heat is discharged in the surrounding environment again.
Work is preceding to vacuumize and annotates conduction oil inside to thermal conductive cavity; Perhaps annotate low boiling working fluid distilled water, ethanol, acetone or cold-producing medium R141b; Before the work thermal conductive cavity being vacuumized and annotate conduction oil inside seals again; Because advantages such as conduction oil have homogeneous heating, and heat-transfer effect is good, the heat that produces in the time of can working LED is rapidly taken away.High temperature heat conductive oil after the heat absorption becomes conduction oil steam and moves upward rapidly, when contacting with heat radiation oscillating flow heat pipe bringing-up section, undergoes phase transition, and discharges gasification latent heat to oscillating flow heat pipe, and is discharged in the environment on every side by oscillating flow heat pipe.
Beneficial effect of the present invention does, the cooperation of the thermal conductive cavity through divergence expression oscillating flow heat pipe and filling conduction oil reaches heat that LED produces by the requirement that in time discharges, and is a kind of novel high-power LED radiator efficient, light, attractive in appearance.
Description of drawings
Fig. 1 Fig. 1 is the high-power LED radiator front view;
Fig. 2 is an A-A cutaway view among Fig. 1;
Fig. 3 is the high-power LED radiator vertical view;
Fig. 4 is the high-power LED radiator upward view;
Fig. 5 is a divergence expression oscillating flow heat pipe structural representation.
Among the figure, the 1--thermal conductive cavity, the 2--fin, 3--divergence expression oscillating flow heat pipe, the 4--wire guide, the 5--Rotary hanging hook, 6--links up with pedestal, 7-LED pedestal, 8--LED chip.
The specific embodiment
Below in conjunction with accompanying drawing and instantiation the present invention is described further.
The structure of high-power LED radiator such as Fig. 1, Fig. 3 and shown in Figure 4.The copper fin 2 of affixed 8 annulars of level on the outer wall of columniform thermal conductive cavity 1; 1 divergence expression oscillating flow heat pipe 3 of coaxial welding on the every fin 2; Divergence expression oscillating flow heat pipe 3 is that 24 petal-like lists of elbow prop up the loop type oscillating flow heat pipe, and divergence expression oscillating flow heat pipe 3 capillary materials are copper pipe.1 wire guide 4 is arranged on the fin 2, and all the wire guide 4 on the fin 2 is on same vertical line, and the LED power line therefrom passes.The outer wall that the bringing-up section of divergence expression oscillating flow heat pipe 3 is passed thermal conductive cavity 1 places in the cavity of thermal conductive cavity 1, and is as shown in Figure 2.Divergence expression oscillating flow heat pipe 3 is affixed with the outer wall sealing of thermal conductive cavity 1, and the external diameter of divergence expression oscillating flow heat pipe 3 is less than the external diameter of fin 2.Hook pedestal 6 and the thermal conductive cavity 1 coaxial top that is fixed in thermal conductive cavity 1, Rotary hanging hook 5 is rotationally connected with the end face of hook pedestal 6.Circular LED pedestal 7 is coaxial to be fixed on the lower surface of thermal conductive cavity 1, and led chip 8 is fixed in the center of LED pedestal 7.The heat-conducting medium filling is in thermal conductive cavity 1, and heat-conducting medium is a conduction oil.Vacuumize before the thermal conductive cavity 1 filling conduction oil, vacuum is 10
-1～10
-2Pa, filling conduction oil again, charging quantity be thermal conductive cavity 1 volume 40～60%.The material of thermal conductive cavity 1 and LED pedestal 7 is copper or aluminium.
The present invention is applicable to the heat radiation of the electronic component of high heat flux, is particularly useful for the heat radiation of great power LED.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (8)
1. high-power LED radiator; It is characterized in that, the fin (2) of affixed 4～16 annulars of level on the outer wall of columniform thermal conductive cavity (1), every fin (2) is gone up coaxial affixed 1 divergence expression oscillating flow heat pipe (3); 1 wire guide (4) is arranged on the fin (2); All the wire guide (4) on the fin (2) is on same vertical line, and the outer wall that the bringing-up section of divergence expression oscillating flow heat pipe (3) is passed thermal conductive cavity (1) places in the cavity of thermal conductive cavity (1), and divergence expression oscillating flow heat pipe (3) is affixed with the outer wall sealing of thermal conductive cavity (1); The external diameter of divergence expression oscillating flow heat pipe (3) is less than the external diameter of fin (2); Hook pedestal (6) and the coaxial top that is fixed in thermal conductive cavity (1) of thermal conductive cavity (1), Rotary hanging hook (5) is rotationally connected with the end face of hook pedestal (6), on the coaxial lower surface that is fixed in thermal conductive cavity (1) of the LED pedestal (7) of circle; Led chip (8) is fixed in the center of LED pedestal (7), and the heat-conducting medium filling is in thermal conductive cavity (1);
Said thermal conductive cavity (1) is a closed container, vacuumizes before thermal conductive cavity (1) the filling heat-conducting medium, filling heat-conducting medium and sealing again.
2. high-power LED radiator according to claim 1 is characterized in that, said fin (2) is that welding or heat-conducting glue are bonding with the affixed mode of divergence expression oscillating flow heat pipe (3).
3. high-power LED radiator according to claim 1 is characterized in that, the material of said thermal conductive cavity (1) and LED pedestal (7) is copper or aluminium.
4. high-power LED radiator according to claim 1 is characterized in that, the material of said fin (2) is copper or aluminium.
5. high-power LED radiator according to claim 1 is characterized in that, said divergence expression oscillating flow heat pipe (3) is that 12～24 petal-like lists of elbow prop up the loop type oscillating flow heat pipe, and divergence expression oscillating flow heat pipe (3) capillary material is a copper pipe.
6. high-power LED radiator according to claim 1 is characterized in that, vacuumizes before said thermal conductive cavity (1) the filling heat-conducting medium, and vacuum is 10
-1～10
-2Pa.
7. high-power LED radiator according to claim 1 is characterized in that, the charging quantity of said heat-conducting medium be thermal conductive cavity (1) volume 40～60%.
8. high-power LED radiator according to claim 1 is characterized in that, said heat-conducting medium is a conduction oil, perhaps is distilled water, ethanol, acetone or the cold-producing medium R141b of low boiling working fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210243701.9A CN102767809B (en) | 2012-07-13 | 2012-07-13 | High-power LED (light emitting diode) heat radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210243701.9A CN102767809B (en) | 2012-07-13 | 2012-07-13 | High-power LED (light emitting diode) heat radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102767809A true CN102767809A (en) | 2012-11-07 |
| CN102767809B CN102767809B (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210243701.9A Expired - Fee Related CN102767809B (en) | 2012-07-13 | 2012-07-13 | High-power LED (light emitting diode) heat radiator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307579A (en) * | 2013-06-13 | 2013-09-18 | 南京航空航天大学 | Method for improving heat radiating efficiency of LED lighting source and integrated radiator |
| CN103579141A (en) * | 2013-10-25 | 2014-02-12 | 华中科技大学 | Composite heat dissipation structure and application thereof |
| CN106678759A (en) * | 2017-02-28 | 2017-05-17 | 广州市香港科大霍英东研究院 | LED radiator suitable for high-power LED components |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191611A (en) * | 2006-11-17 | 2008-06-04 | 富准精密工业(深圳)有限公司 | Light-emitting diode lamps and lanterns |
| CN201093272Y (en) * | 2007-10-12 | 2008-07-30 | 深圳市俄菲照明有限公司 | High-power LED barrel lamp |
| CN201103806Y (en) * | 2007-09-03 | 2008-08-20 | 廖钦彬 | LED lamp |
-
2012
- 2012-07-13 CN CN201210243701.9A patent/CN102767809B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191611A (en) * | 2006-11-17 | 2008-06-04 | 富准精密工业(深圳)有限公司 | Light-emitting diode lamps and lanterns |
| CN201103806Y (en) * | 2007-09-03 | 2008-08-20 | 廖钦彬 | LED lamp |
| CN201093272Y (en) * | 2007-10-12 | 2008-07-30 | 深圳市俄菲照明有限公司 | High-power LED barrel lamp |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307579A (en) * | 2013-06-13 | 2013-09-18 | 南京航空航天大学 | Method for improving heat radiating efficiency of LED lighting source and integrated radiator |
| CN103307579B (en) * | 2013-06-13 | 2016-04-27 | 南京航空航天大学 | Improve method and the integral heat radiator of LED illumination light source radiating efficiency |
| CN103579141A (en) * | 2013-10-25 | 2014-02-12 | 华中科技大学 | Composite heat dissipation structure and application thereof |
| CN103579141B (en) * | 2013-10-25 | 2016-06-22 | 华中科技大学 | A kind of composite radiating structure and application thereof |
| CN106678759A (en) * | 2017-02-28 | 2017-05-17 | 广州市香港科大霍英东研究院 | LED radiator suitable for high-power LED components |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102767809B (en) | 2014-05-14 |
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Granted publication date: 20140514 Termination date: 20180713 |