CN101893220B - Gravity type flat heat pipe radiator for cooling LED - Google Patents
Gravity type flat heat pipe radiator for cooling LED Download PDFInfo
- Publication number
- CN101893220B CN101893220B CN2010102165424A CN201010216542A CN101893220B CN 101893220 B CN101893220 B CN 101893220B CN 2010102165424 A CN2010102165424 A CN 2010102165424A CN 201010216542 A CN201010216542 A CN 201010216542A CN 101893220 B CN101893220 B CN 101893220B
- Authority
- CN
- China
- Prior art keywords
- heat
- pipe
- heat pipe
- combination
- radiating
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to a gravity type flat heat pipe radiator for cooling an LED in the technical field of LEDs. The gravity type flat heat pipe radiator comprises a central radiating pipe, a combined radiating pipe, radiating fins, a cover plate and a straight rib, wherein the central radiating pipe is fixedly connected with the combined radiating pipe; the combined radiating pipe is fixedly connected with a substrate of the LED; the cover plate is fixedly arranged on the top of the combined radiating pipe; a plurality of radiating fins are fixedly arranged on upper and lower sides of the cover plate and are respectively connected with the externals of the central radiating pipe and the combined radiating pipe; and the straight rib is radially arranged in the combined radiating pipe and is connected with the radiating fins. The gravity type flat heat pipe radiator is a novel high-power LED radiator with the advantages of large radiating area, high radiating efficiency, good starting performance, light weight, good temperature uniformity, compact structure and convenient processing.
Description
Technical field
What the present invention relates to is the device in a kind of led technology field, specifically is a kind of gravity type flat heat pipe radiator that is used to cool off the LED of the above power of 100W.
Background technology
LED have energy-saving and environmental protection, attractive in appearance, safety, life-span length, low consumption, high brightness, start-up time weak point, waterproof, shockproof, be prone to advantages such as light modulation, light beam are concentrated, all solid state, easy maintenance; Widely popularize as a kind of novel energy-saving illumination light source; The light extraction efficiency of white light power LED has reached 167lm/W at present; Commodity have also reached 100lm/W, have surpassed the average level of fluorescence etc., far above the luminous efficiency of incandescent lamp and halogen tungsten lamp.Expect the year two thousand twenty, the luminous efficiency of white light LEDs will be above all conventional light source, and theoretical efficiency can reach 300lm/W.Be accompanied by LED high-performance, microminiaturization, integrated three great development trend; Heat dissipation problem is more and more outstanding, and heat will have a strong impact on its stability and service life in the accumulation at chip place, and this just becomes the practical restraining factors of high-brightness LED combined light source large scale investment; Such as for the W level (>=1W) for the great power LED; Chip size is merely 1mm * 1mm～2.5mm * 2.5mm, and how the heat flow density of some high-power LED chip even surpassed 400W/cm2 makes the heat of great power LED distribute timely; The temperature rise that prevents LED is too high, is that LED device packages and devices is used the key problem that must solve emphatically.
Retrieval through to prior art is found, number of patent application 200811027959.9, and denomination of invention is a kind of method of high-powered LED lamp quick heat radiating.This techniques make use be that a kind of vacuum liquid storage cylinder is surrounded LED substrate and interior radiator shutter, let the vacuum liquid storage cylinder become heat pipe and dispel the heat.The part of this technology is actually a plate shaped gravity assisted heat pipe, and the bottom water plane is a heating surface, and the upper water plane is the condensation cooling surface.When heat-transfer area (LED substrate) was little, using a plate shaped gravity assisted heat pipe heat radiation was a good technical scheme, but it is bigger to work as the heat-transfer area size, and when LED power was also very big, the heat pipe startability was bad, and the heat radiation of heat-transfer area center is bad.Will the whole LED substrate be wrapped in the water tank simultaneously is very difficult on manufacture craft.
Number of patent application 200810217336.8, denomination of invention are a kind of vacuum liquid heat radiating device that is used for the LED light fixture.This technology adopts a big hollow cuboid radiator, and built-in heat-conducting liquid also vacuumizes, and there is fin on the radiator surface.The principle that this patent is used also is the principle of flat gravity heat pipe.When the heat-transfer area size is bigger, when LED power was also very big, the heat pipe startability was bad, and the heat radiation of heat-transfer area center is bad.Especially the heat conduction and heat radiation ability the startup stage is very low.
Number of patent application 200810029568.0, denomination of invention are a kind of high-power LED module frame type road lamp based on heat pipe heat radiation.This technology is dispersed in a plurality of LED on a plurality of LED aluminium bases in order to realize powerful heat radiation, and each little aluminium base is installed on its corresponding cylindrical screen heat pipe fixed head, through the horizontal heat pipe that is inserted on the heat pipe fixed groove heat is derived.What this device used is low-power LED.The heat-sinking capability of this method and the heat radiation of existing fin are more or less the same.The maximum heat-sinking capability of silk screen class heat pipe is all little, and the device component is too scattered, and is not suitable for great power LED cooling.
Number of patent application 200910080178.0, denomination of invention are New LED and high-power radiating element radiator.This technology adopts the flat-plate heat pipe horizontal positioned, and inside stamps out a plurality of via-hole array that are arranged side by side, and through-hole wall has some little fin of extrusion modling, and condensation segment is installed fin.This technology is a gravity-type Horizontal heat pipe equally, and there is fin and little fin of enhanced heat exchange inside.Difficulty of processing is high, and because radiating fin is not an one with heat pipe, and thermal contact resistance is bigger, and the outer electric power that adds carries out wind-cooling heat dissipating, not only can consume energy more and make the bulk life time and the reliability reduction of device.
Number of patent application 200910084525.7, denomination of invention is the lamp that is made up of LED of band phase change radiator structure.This technology " is returned " the band phase-change liquid of font by basic one-tenth vacuum seal inner chamber constitutes a gravity shape flat-plate heat pipe; Its inwall surrounds LED and starts the power supply base plate; Only depend on the two ends of a metallic power base plate to link to each other with the radiator heat pipe, overall radiating effect is not high.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that prior art exists; A kind of gravity type flat heat pipe radiator that is used for cooling LED is provided; Its overall heat exchange effect will be far longer than the heat exchange effect of single heat pipe; The area of dissipation of this radiator is big, and radiating efficiency is high, is that a kind of startability is good, in light weight, uniform temperature is good, compact conformation, novel large-power LED radiator easy to process.
The present invention realizes through following technical scheme; The present invention includes: central heat sink pipe, combination radiating tube, radiating fin, cover plate and straight rib; Wherein: the central heat sink pipe is fixedly connected with the combination radiating tube; The combination radiating tube is fixedly connected with the substrate of LED; Cover plate is fixedly set in the top of combination radiating tube, and some radiating fins are fixedly set in the both sides up and down of cover plate and are connected with the outside of central heat sink pipe and combination radiating tube respectively, and straight rib radially is arranged in the combination radiating tube and with radiating fin and is connected.
Described combination radiating tube is double-deck heat-dissipating cylinder structure with one heart; Wherein: be filled with ethanol working medium in the internal layer heat-dissipating cylinder; Be filled with water in the interlayer, the outside of combination radiating tube is provided with and is the triangular shaped radiating fin that star is dispersed, and the integrated punching press of this radiating fin is processed.
Described central heat sink pipe is hollow heat-dissipating cylinder structure, and its first half outside is provided with and is the triangular shaped radiating fin that star is dispersed, and Lower Half is provided with combination heat radiation inner core, and the integrated punching press of this radiating fin is processed.
Described cover plate is the collar-shaped planform, and this cover plate is that the heat pipe integrated punching press of the first half of central heat sink pipe is processed, described thimble structure and the tight interconnection of combination radiating tube.
Described straight rib is a star diverging structure, and this straight rib is processed for the integrated punching press of combination radiating tube, contactless thermal resistance, and heat transfer property is better, can increase the heat-sinking capability of central heat sink pipe.
The upper end of described straight rib does not contact with cover plate, the startup stage of LED, when heat pipe is not started working, the heat of heat-transfer area middle section is passed through floor heat conduction.Next is an augmentation of heat transfer face evaporation and heat-exchange characteristic when heat pipe is worked.
Described central heat sink pipe is inner fills ethanol working medium, and vacuumizes sealing.The outer circle annular heat pipe is inner fills water conservancy project matter, and vacuumizes sealing.
This device directly closely links to each other through the integrated combination of through hole bolt and heat-conducting glue with the LED substrate; To obtain the shortest heat conduction approach; And use the heat pipe of integrated processing to make up and different working medium; Use pack into the cylindrical gravity assisted heat pipe of center of the good ethanol working medium of starting characteristic, LED substrate center receives thermal shock and overheated burning when preventing just to heat, and improves the middle section heat-sinking capability.
The good water conservancy project matter of the heat transfer characteristic combination radiating tube of packing into when using stable operation, heat-sinking capability when improving steady-state operation.After great power LED started, the heat that LED distributes at first dispelled the heat through rib structure heat conduction.The ethanol heat pipe starts thereupon, takes away LED substrate center zone heat.Last hydro-thermal pipe starts, and radiator gets into steady-working state.Solved the low bottleneck problem of big heat-transfer area middle section heat dispersion.
Compared with prior art, the present invention has following beneficial effect:
1. to great power LED large substrates problem, use the integrated combination of gravity type flat heat pipe of integrated processing, make cheap and simple, compact conformation.The condensation part area of dissipation is big.
2. pay attention to improving starting characteristic, LED substrate center receives thermal shock and overheated burning in the time of can preventing just to have heated.The working medium that each heat pipe uses is different.Middle ethanol heat pipe lays particular emphasis on starting characteristic, and water heat pipe heat on every side lays particular emphasis on the stable operation characteristic.The radiator integral structure proximate is in fin heat-conducting type radiator.When LED had just started, at first through the fin heat conduction and heat radiation, ethanol heat pipe in central area started heat conduction then, and last hydro-thermal pipe starts heat conduction.Like this can be more effective with the startup stage heat distribute.
3. each position heat-sinking capability scalable of substrate adopts LED substrate center district to dispel the heat separately, and heating surface (area) (HS is little, and area of dissipation is big, strengthens the center heat radiation, makes the heat of the maximum center of thermic load better scatter and disappear out.
4. increase heat pipe length (gravity assisted heat pipe length does not influence the inside heat pipe thermal resistance), adopt the side heat radiation can improve area of dissipation.
5. adaptability is strong, can follow according to heat radiation power and the LED bulb of LED and arrange, and regulates the heat pipe pipe range, increases concentric shape heat pipe quantity.Overall shape also can change (as square, rectangle) to be complementary with different LED substrates.
Description of drawings
Fig. 1 is the overall structure figure of heat pipe combined heat radiator.
Fig. 2 is the A-A cross sectional view of heat pipe combined heat radiator bottom.
Fig. 3 is the B-B cross sectional view on heat pipe combined heat radiator top.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
As shown in Figure 1; Present embodiment comprises: central heat sink pipe 1, combination radiating tube 2, radiating fin 8, radiating fin 12, cover plate 9 and straight rib 5; Wherein: central heat sink pipe 1 is fixedly connected with combination radiating tube 2; Combination radiating tube 2 is fixedly connected with the substrate 6 of LED; Cover plate 9 is fixedly set in the top of combination radiating tube 2, and some radiating fins 8 and 12 are fixedly set in the both sides up and down of cover plate 9 respectively and are connected with the outside of central heat sink pipe 1 and combination radiating tube 2 respectively, and straight rib 5 radially is arranged in the combination radiating tube 2 and with radiating fin 12 and is connected.
Described central heat sink pipe is hollow heat-dissipating cylinder structure, and its first half outside is provided with integrated punching press triangle fin, and Lower Half is provided with combination heat radiation inner core 13.
Described triangle fin is the star divergent structure.
Described combination radiating tube is double-deck heat-dissipating cylinder structure with one heart, wherein: be filled with ethanol working medium in the internal layer heat-dissipating cylinder, be filled with water in the interlayer.
The said device overall height of present embodiment 40cm adopts aluminum die casting to process, and heat-transfer area maximum heat current density surpasses 700kW/m2.
Described central heat sink pipe 1 height 20cm, central heat pipe is with radiating fin 8 outward, and combination radiating tube top blind flange 9 is arranged at the bottom.End face 4 leaves evacuation liquid-filling hole 10 on the central heat sink pipe.On the combination radiating tube top blind flange 9 an evacuation liquid-filling hole 11 is arranged also.Central heat sink bore 4.5cm.Have slot adhesion mouth 7 between the internal layer heat-dissipating cylinder 13 of combination radiating tube 2 and the cover plate 9 of outer heat-dissipating cylinder 14 and collar-shaped planform.
Described combination radiating tube 2 height 20cm are the concentric heat-dissipating cylinder structure of bilayer.The combination radiating tube is with the long radiating fin 12 of 30cm outward, and internal layer heat-dissipating cylinder 13, outer heat-dissipating cylinder 14 are formed.Wherein: have straight rib 5 to connect between internal layer heat-dissipating cylinder (the central heat pipe) 13 of double-deck heat-dissipating cylinder structure with one heart and the outer heat-dissipating cylinder 14.Straight rib 5 upper ends all leave space 15 with keep outer heat-dissipating cylinder on top UNICOM, like this can be just passable with an evacuation liquid-filling hole 11 with vacuumize the time at topping up.
The central heat sink pipe 1 that heat pipe heat is closed the first half fuses with the combination radiating tube inner core 13 of heat pipe combination bottom becomes a central heat pipe, this heat pipe whole height 40cm, internal diameter 4.5cm.Its inner filling accounts for the ethanol working medium 16 of this heat pipe cumulative volume 20%, and vacuumizes sealing.Outer heat-dissipating cylinder 14 internal diameters of combination radiating tube are 14cm, height 20cm.Its inner filling accounts for the water conservancy project matter 17 of this combination radiating tube cumulative volume 20%, and vacuumizes sealing.
Said LED substrate 6 is an aluminium base, is shaped as the plectane of diameter 15cm.One side is equipped with the LED18 that overall power is 200W.
As shown in Figure 2, described straight rib 5 totally 8 and be uniformly distributed in the combination radiating tube inner core 13 and urceolus 14 between.
At even 14 the triangle fins 12 that distribute of urceolus 14 circumferential outer surfaces.4 bolt holes 19 that are used for LED substrate and heat pipe bottom surface fixed installation usefulness are arranged, be evenly distributed on the edge of heat pipe bottom, bottom 20.
Fig. 3 has provided the close B-B cross sectional view of portion of this heat pipe heat.From figure, can see heat pipe heat evenly the distribute triangle radiating fin 8 of 14 central heat sink pipes of portion's central heat sink pipe 1 circumferential outer surface that closes.
This device adopts central heat sink pipe and bottom combination radiating tube to form combined radiator.The heat of LED substrate center zone and peripheral region is respectively by 2 heat pipe heat radiations, and radiating fin is also independent respectively.Its overall heat exchange effect is far longer than the heat exchange effect of existing single heat pipe, and the area of dissipation of this radiator is big, and radiating efficiency is high, is that a kind of startability is good, in light weight, uniform temperature is good, compact conformation, novel large-power LED radiator easy to process.
Claims (7)
1. gravity type flat heat pipe radiator that is used for cooling LED; Comprise: central heat sink pipe, combination radiating tube, radiating fin, cover plate and straight rib; Wherein: the central heat sink pipe is fixedly connected with the combination radiating tube; The combination radiating tube is fixedly connected with the substrate of LED, and cover plate is fixedly set in the top of combination radiating tube, and some radiating fins are fixedly set in the both sides up and down of cover plate and are connected with the outside of central heat sink pipe and combination radiating tube respectively; Straight rib radially is arranged in the combination radiating tube and with radiating fin and is connected, and it is characterized in that:
Described combination radiating tube is double-deck heat-dissipating cylinder structure with one heart, wherein: be filled with ethanol working medium in the internal layer heat-dissipating cylinder, be filled with water in the interlayer.
2. the gravity type flat heat pipe radiator that is used for cooling LED according to claim 1 is characterized in that, the outside of combination radiating tube is provided with and is the triangular shaped radiating fin that star is dispersed, and the integrated punching press of this radiating fin is processed.
3. the gravity type flat heat pipe radiator that is used for cooling LED according to claim 1; It is characterized in that; Described central heat sink pipe is hollow heat-dissipating cylinder structure, and its first half outside is provided with and is the triangular shaped radiating fin that star is dispersed, and Lower Half is provided with combination heat radiation inner core.
4. according to claim 1 or the 3 described gravity type flat heat pipe radiators that are used for cooling LED, it is characterized in that described central heat sink pipe is inner fills ethanol working medium and vacuumize sealing.
5. the gravity type flat heat pipe radiator that is used for cooling LED according to claim 1 is characterized in that, described cover plate is the collar-shaped planform, this thimble structure and the tight interconnection of combination radiating tube.
6. the gravity type flat heat pipe radiator that is used for cooling LED according to claim 1 is characterized in that, described straight rib is a star diverging structure, and this straight rib is processed for the integrated punching press of combination radiating tube.
7. the gravity type flat heat pipe radiator that is used for cooling LED according to claim 1 is characterized in that the upper end of described straight rib does not contact with cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102165424A CN101893220B (en) | 2010-07-02 | 2010-07-02 | Gravity type flat heat pipe radiator for cooling LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102165424A CN101893220B (en) | 2010-07-02 | 2010-07-02 | Gravity type flat heat pipe radiator for cooling LED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101893220A CN101893220A (en) | 2010-11-24 |
| CN101893220B true CN101893220B (en) | 2012-02-22 |
Family
ID=43102500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102165424A Expired - Fee Related CN101893220B (en) | 2010-07-02 | 2010-07-02 | Gravity type flat heat pipe radiator for cooling LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101893220B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047631A (en) * | 2012-12-29 | 2013-04-17 | 天津博能太阳能设备有限公司 | Superconductive nanofluid radiating lamp shell and working method thereof |
| CN103047630A (en) * | 2012-12-29 | 2013-04-17 | 天津博能太阳能设备有限公司 | Superconductive nanofluid radiator and working method thereof |
| CN104235801B (en) * | 2014-09-15 | 2017-02-15 | 西安交通大学 | High-power LED (Light Emitting Diode) phase-change temperature control device with heat pipes |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2501011Y (en) * | 2001-08-20 | 2002-07-17 | 云俊义 | Heat conducting radiator |
| WO2008131584A1 (en) * | 2007-04-27 | 2008-11-06 | Jenshyan Chen | Light emitting diode lighting device |
| CN201074794Y (en) * | 2007-05-30 | 2008-06-18 | 黄成功 | Cooling device of LED lamp |
| CN101113812A (en) * | 2007-08-08 | 2008-01-30 | 四川新力光源有限公司 | Heat radiating device of LED light source |
| CN101526204A (en) * | 2008-03-05 | 2009-09-09 | 广东新创意专利发展有限公司 | High-power forced radiation type heat pipe LED illumination device |
| CN201277525Y (en) * | 2008-08-08 | 2009-07-22 | 龙国庆 | High-power LED lamp radiator with heat pipe function |
| CN201203077Y (en) * | 2008-05-07 | 2009-03-04 | 上海理工大学 | Loop hot pipe apparatus for high power LED heat radiation |
| US8827498B2 (en) * | 2008-09-30 | 2014-09-09 | Osram Sylvania Inc. | LED light source having glass heat pipe with fiberglass wick |
| CN101413653A (en) * | 2008-11-12 | 2009-04-22 | 林信义 | A kind of vacuum liquid heat radiating device that is used for the LED light fixture |
| CN101418948A (en) * | 2008-12-08 | 2009-04-29 | 陈玉新 | A kind of heat dissipating method of light-emitting diode (LED) module |
| CN101619844A (en) * | 2009-08-10 | 2010-01-06 | 渠志鹏 | Ultra-high power LED street lamp combined type heat pipe heat dissipation device |
-
2010
- 2010-07-02 CN CN2010102165424A patent/CN101893220B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101893220A (en) | 2010-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201237195Y (en) | High-power LED lamp high-efficiency radiator | |
| CN201081205Y (en) | Steam-chamber heat dissipation structure for high power LED street lamp | |
| CN101487584A (en) | Heat radiating module for high-power LED lamp | |
| CN101937908B (en) | Heat pipe type high-power LED (Light Emitting Diode) module | |
| CN101886801B (en) | Combined planar heat pipe radiator used for cooling light emitting diode (LED) | |
| CN101608757B (en) | LED streetlight | |
| CN100552287C (en) | High power semiconductor lighting lamp | |
| CN202511239U (en) | Compound phase change three-dimensional LED (Light-Emitting Diode) radiator | |
| CN101893220B (en) | Gravity type flat heat pipe radiator for cooling LED | |
| CN201368433Y (en) | High-power LED street lamp radiator | |
| CN100594323C (en) | High power semiconductor lighting lamp | |
| CN203464213U (en) | LED (Light Emitting Diode) projection lamp radiator | |
| CN201145244Y (en) | Self-refrigeration cooling LED lamp | |
| CN203162619U (en) | LED lamp with high radiating efficiency | |
| CN201555083U (en) | Multi-chip high-power LED lamp and a radiator structure | |
| CN106524090A (en) | Round tube type heat tube nest radiator for high power LED cooling | |
| CN203848248U (en) | High-power LED lighting lamp base with efficient heat radiation effect | |
| CN201829499U (en) | Heat pipe type high-power LED module | |
| CN204810177U (en) | Heat dissipation of LED street lamp and heat accumulation power generation facility | |
| CN201780997U (en) | Heat radiating structure used in LED chip | |
| CN101666440A (en) | High-power LED lamp | |
| CN201496913U (en) | Heat-radiating device for LED streetlamp | |
| CN205664330U (en) | High -power light -emitting diode (LED) radiator | |
| CN210861024U (en) | Heat radiation structure of high-power LED lamp | |
| CN201401649Y (en) | High-power heat pipe radiator LED illuminating lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20140702 |
|
| EXPY | Termination of patent right or utility model |