CN108119882A - LED component soaking plate and LED component based on biomimetic features - Google Patents
LED component soaking plate and LED component based on biomimetic features Download PDFInfo
- Publication number
- CN108119882A CN108119882A CN201711373744.8A CN201711373744A CN108119882A CN 108119882 A CN108119882 A CN 108119882A CN 201711373744 A CN201711373744 A CN 201711373744A CN 108119882 A CN108119882 A CN 108119882A
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- Prior art keywords
- flow channel
- capillary flow
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- liquid
- led component
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Present invention is disclosed a kind of LED component soaking plates and LED component based on biomimetic features, for reducing the overall thermal resistance of LED component, the soaking plate includes the evaporation plate being equipped with toward each other and cold plate, Packed chamber is formed between evaporation plate and cold plate, working medium is inoculated in chamber, evaporation plate includes evaporation plate body and the first liquid-sucking core being attached on evaporation plate body madial wall, cold plate includes cold plate body and the second liquid-sucking core being attached on cold plate body madial wall, several supporting items are provided between first liquid-sucking core and the second liquid-sucking core, the bionical capillary flow channel of the first liquid-sucking core of connection and the second liquid-sucking core is additionally provided in the chamber.
Description
Technical field
The invention belongs to LED field of luminescent technology, and in particular to a kind of LED component soaking plate based on biomimetic features and
LED component.
Background technology
Conventional incandescent energy consumption is high, short life, in today that global resources are in short supply, forbids giving birth to by national governments gradually
Production, substitute products are electronic energy-saving lamps therewith, although electronic energy-saving lamp improves energy-saving effect, but due to the use of many pollutions
The heavy metal element of environment, and run counter to the main trend of environmental protection.With LED technology high speed development LED illumination gradually into
For the only choosing of novel green illumination.LED principle of luminosity, energy-saving and environmental protection level on all be far superior to traditional lighting production
Product.
In current high-power LED light source system, generally use is all the combination of plurality of LEDs device array or multi-chip
The mode of LED integration packagings realizes overall illuminating effect, and each LED component can regard the heat of a concentration as
Source.When the heat for concentrating on LED component needs to be diffused on entire radiator base plate, there are certain diffusion thermal resistance, and drop
Low diffusion thermal resistance is to reduce heat to concentrate to reduce the most effectual way of cooling system overall thermal resistance.Soaking plate is as a kind of spy
The phase transformation heat pipe of different form, has very high thermal conductivity factor, can promote temperature distribution evenness and reduce heat concentration, be real
How the effective way of existing this purpose, improve the heat conductivility of soaking plate, be very meaningful research topic.
The content of the invention
One embodiment of the application provides a kind of LED component soaking plate based on biomimetic features, bionical capillary solution therein
Logical circulation road can solve the problems, such as liquid-sucking core capillary pressure and permeability contradiction in conventional soaking plate, have high heat conduction system
Number, the LED component are included with soaking plate：
The evaporation plate and cold plate being equipped with toward each other, form Packed chamber between the evaporation plate and cold plate
Room, working medium is inoculated in the chamber, and the evaporation plate includes evaporation plate body and is attached at the evaporation plate body madial wall
On the first liquid-sucking core, the cold plate include cold plate body and be attached on the cold plate body madial wall second
Liquid-sucking core is provided with several supporting items, connection is additionally provided in the chamber between first liquid-sucking core and the second liquid-sucking core
The bionical capillary flow channel of first liquid-sucking core and the second liquid-sucking core, the bionical capillary flow channel include first order hair
Thin flow channel, the second level capillary flow channel being connected with the first order capillary flow channel and with the second level mao
The third level capillary flow channel of thin flow channel connection, second level hair described in the caliber ＞ of the first order capillary flow channel
The caliber of third level capillary flow channel described in the caliber ＞ of thin flow channel, wherein, the first order capillary flow channel phase
To the second level capillary flow channel and third level capillary flow channel closer to second liquid-sucking core, the third level hair
Thin flow channel is compared with the first order capillary flow channel and second level capillary flow channel closer to first imbibition
Core.
In one embodiment, the folder of the second level capillary flow channel and third level capillary flow channel and the cold plate
Angle is 40 °~80 °.
In one embodiment, the folder of the second level capillary flow channel and third level capillary flow channel and the cold plate
Angle is 45 °~60 °.
In one embodiment, the quantity of second level capillary flow channel described in the quantity ＜ of the first order capillary flow channel
The quantity of third level capillary flow channel described in ＜.
In one embodiment, the bionical capillary flow channel includes the matrix part of plate, the first order capillary solution circulation
Road, second level capillary flow channel and third level capillary flow channel are by rapid laser carving in described matrix portion.
In one embodiment, the first order capillary flow channel, second level capillary flow channel and third level capillary liquid stream
Copper powder filled with sintering in access.
In one embodiment, first liquid-sucking core and the second liquid-sucking core are copper powder sintered plate.
In one embodiment, the working medium is deionized water or ethyl alcohol.
In one embodiment, vacuum environment in the chamber.
One embodiment of the application also provides a kind of LED component, is used including the LED component as described above based on biomimetic features
Soaking plate.
Compared with prior art, the technical solution of the application has the advantages that：
By setting the bionical capillary flow channel of the first liquid-sucking core of connection and the second liquid-sucking core, bionical capillary in chamber
Flow channel include first order capillary flow channel, the second level capillary flow channel that is connected with first order capillary flow channel with
And the third level capillary flow channel being connected with second level capillary flow channel, the caliber ＞ second of first order capillary flow channel
The caliber of the caliber ＞ third level capillary flow channels of grade capillary flow channel, wherein, first order capillary flow channel is with respect to the
Two level capillary flow channel and third level capillary flow channel closer to the second liquid-sucking core, third level capillary flow channel compared with
Closer to the first liquid-sucking core, which uses for first order capillary flow channel and second level capillary flow channel
The vein fractal net work of similar plants weight, can effectively solve traditional liquid-sucking core capillary pressure and permeability cannot get both
Problem improves the heat transfer efficiency of soaking plate.
Description of the drawings
Fig. 1 is the structure diagram of the LED component soaking plate based on biomimetic features in one embodiment of the application；
Fig. 2 is multistage capillary solution circulation in the LED component soaking plate based on biomimetic features in one embodiment of the application
The structure diagram on road.
Specific embodiment
The application is described in detail below with reference to specific embodiment shown in the drawings.But these embodiments are simultaneously
The application is not limited, structure that those of ordinary skill in the art are made according to these embodiments, method or functionally
Conversion is all contained in the protection domain of the application.
Join Fig. 1 to Fig. 2, introduce the specific embodiment party with soaking plate 100 the present invention is based on the LED component of biomimetic features
Formula.In the present embodiment, which includes evaporation plate 10, cold plate 20, supporting item 30 and bionical with soaking plate 100
Capillary flow channel 40.
Evaporation plate 10 and cold plate 20 are positioned opposite to each other, cooperatively form between the two there are one sealing chamber (not mark
Show), working medium (not shown) is inoculated in chamber.Working medium is the medium of heat exchange in soaking plate 100, by the change of its phase,
Realize transmission of the heat from evaporation plate 10 to cold plate 20.Working medium is preferably the liquid medium with higher specific heat capacity, and one is real
It applies in example, such as can be deionized water or ethyl alcohol.Certainly, in the embodiment of other replacements, working medium can also select it
His suitable material.
Evaporation plate 10 includes evaporation plate body 11 and the first liquid-sucking core 12 being attached on 11 madial wall of evaporation plate body,
Cold plate 20 includes cold plate body 21 and the second liquid-sucking core 22 being attached on 21 madial wall of cold plate body.First imbibition
12 and second liquid-sucking core 22 of core needs have preferable capillary structure, so that working medium can be passed rapidly inside it
It is defeated.In one embodiment, the first liquid-sucking core 12 and the second liquid-sucking core 22 can be copper powder sintered plate.
The quantity of supporting item 30 be preferably set to it is multiple, be arranged at the first liquid-sucking core 12 and the second liquid-sucking core 22 it
Between, chamber is used to support, ensures the stable operation environment of soaking plate 100.
Bionical capillary flow channel 40 connects the first liquid-sucking core 12 and the second liquid-sucking core 22, during work, the steaming of soaking plate 100
The heat that plate 10 absorbs LED component is sent out, and by the first adjacent liquid-sucking core 12 working medium heating evaporation, gaseous working medium
Promptly full of chamber and generating efficient heat exchange with cold plate 20, so as to be cooled to liquid refrigerant, the working medium of liquid is by the
Two liquid-sucking cores 22 absorb, and then are back to the first liquid-sucking core 12 by bionical capillary flow channel 40, are cycled in cycles,
Realize efficient transmission of the heat of LED component generation from evaporation plate 10 to cold plate 20.
Bionical capillary flow channel 40 includes first order capillary flow channel 41, is connected with first order capillary flow channel 41
Second level capillary flow channel 42 and the third level capillary flow channel 43 that is connected with second level capillary flow channel 42,
The caliber ＞ third level capillarys flow channel 43 of the caliber ＞ second level capillary flow channel 42 of level-one capillary flow channel 41
Caliber, wherein, first order capillary flow channel 41 is with respect to second level capillary flow channel 42 and third level capillary flow channel 43
Closer to the second liquid-sucking core 22, third level capillary flow channel 43 is compared with first order capillary flow channel 41 and second level capillary
Flow channel 42 is closer to the first liquid-sucking core 12.
In present embodiment, by bionical capillary flow channel 40 comprising exemplified by three-level, its operation principle is introduced.Here,
First order capillary flow channel 41 is connected with the second liquid-sucking core 22, and third level capillary flow channel 43 connects with the first liquid-sucking core 12
It connecing, the design of this multistage capillary flow channel based on plant leaf vein fractal net work can provide larger capillary pressure, the
The condensed liquid refrigerant assembled at second liquid-sucking core 22 can be sucked bionical capillary easily by level-one capillary flow channel 41
In flow channel, meanwhile, compared with traditional liquid-sucking core, flow resistance very little, with high infiltration when working medium flows wherein
Rate.
In the embodiment of replacement, bionical capillary flow channel 40 can also include the capillary flow channel of more stages.
In one embodiment, the angle of second level capillary flow channel 42 and third level capillary flow channel 43 and cold plate 20
For 40 °~80 °, it is preferable that be arranged to 45 °~60 °.The quantity ＜ second level capillary solution circulation of first order capillary flow channel 41
The quantity of the quantity ＜ third level capillarys flow channel 43 on road 42.
In one embodiment, bionical capillary flow channel 40 includes the matrix part 44 of plate, first order capillary flow channel 41,
Second level capillary flow channel 42 and third level capillary flow channel 43 are by rapid laser carving in described matrix portion 44.When
So, other replacement embodiments in, above-mentioned capillary flow channel can also for example chemistry corrosion by way of system
Make.
In one embodiment, the first order capillary flow channel 41, second level capillary flow channel 42 and third level capillary
Copper powder filled with sintering in flow channel 43, to enhance the capillary pressure of bionical capillary flow channel 40.
In one embodiment, the thickness of evaporation plate body 11 is less than the thickness of cold plate body 21.Can so it reduce from heat
Source is transferred to the thermal resistance of working medium, and the heat of LED component can quickly be transferred to the first liquid-sucking core 12, and cold plate 20 can rise
To better condensation effect.
In one embodiment, the first liquid-sucking core 12 and the second liquid-sucking core 22 are copper powder sintered plate, and working medium is deionized water or second,
Vacuum environment in chamber.
One embodiment of the application also provides a kind of LED component using the above-mentioned soaking plate 100 based on biomimetic features, by
In being not related to the improvement to LED component other parts, therefore the concrete structure of LED component is also repeated no more.
The technical solution of the application has the advantages that：
By setting the bionical capillary flow channel of the first liquid-sucking core of connection and the second liquid-sucking core, bionical capillary in chamber
The second level capillary solution circulation that flow channel includes first order capillary flow channel 41, is connected with first order capillary flow channel 41
Road 42 and the third level capillary flow channel 43 being connected with second level capillary flow channel 42, first order capillary flow channel 41
Caliber ＞ second level capillary flow channel 42 caliber ＞ third level capillarys flow channel 43 caliber, wherein, first order hair
Thin flow channel 41 with respect to second level capillary flow channel 42 and third level capillary flow channel 43 closer to the second liquid-sucking core, the
Three-level capillary flow channel 43 is compared with first order capillary flow channel 41 and second level capillary flow channel 42 closer to first
Liquid-sucking core, the bionical capillary flow channel employ the vein fractal net work of similar plants weight, can effectively solve traditional suction
The problem of wick-containing capillary pressure and permeability cannot get both improves the heat transfer efficiency of soaking plate.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
For bright book as an entirety, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
Those listed above it is a series of be described in detail only for the application feasibility embodiment specifically
Bright, they are not to limit the protection domain of the application, all equivalent implementations made without departing from the application skill spirit
Or change should be included within the protection domain of the application.
Claims (10)
1. a kind of LED component soaking plate based on biomimetic features, which is characterized in that including the evaporation being equipped with toward each other
Plate and cold plate form Packed chamber between the evaporation plate and cold plate, working medium, the evaporation are inoculated in the chamber
Plate includes evaporation plate body and the first liquid-sucking core being attached on the evaporation plate body madial wall, and the cold plate includes cold
Solidifying plate body and the second liquid-sucking core being attached on the cold plate body madial wall, first liquid-sucking core and the second imbibition
Several supporting items are provided between core, the bionical of connection first liquid-sucking core and the second liquid-sucking core is additionally provided in the chamber
Capillary flow channel, the bionical capillary flow channel include first order capillary flow channel and the first order capillary liquid stream
The second level capillary flow channel of access connection and the third level capillary liquid stream being connected with the second level capillary flow channel
Access, third level hair described in the caliber ＞ of second level capillary flow channel described in the caliber ＞ of the first order capillary flow channel
The caliber of thin flow channel, wherein, the relatively described second level capillary flow channel of the first order capillary flow channel and the 3rd
Grade capillary flow channel is closer to second liquid-sucking core, and the third level capillary flow channel is compared with the first order capillary
Flow channel and second level capillary flow channel are closer to first liquid-sucking core.
2. the LED component soaking plate according to claim 1 based on biomimetic features, which is characterized in that the second level
Capillary flow channel and third level capillary flow channel and the angle of the cold plate are 40 °~80 °.
3. the LED component soaking plate according to claim 2 based on biomimetic features, which is characterized in that the second level
Capillary flow channel and third level capillary flow channel and the angle of the cold plate are 45 °~60 °.
4. the LED component soaking plate according to claim 1 based on biomimetic features, which is characterized in that the first order
The number of third level capillary flow channel described in the quantity ＜ of second level capillary flow channel described in the quantity ＜ of capillary flow channel
Amount.
5. the LED component soaking plate according to claim 1 based on biomimetic features, which is characterized in that the bionical hair
Thin flow channel includes the matrix part of plate, the first order capillary flow channel, second level capillary flow channel and the third level
Capillary flow channel is by rapid laser carving in described matrix portion.
6. the LED component soaking plate according to claim 5 based on biomimetic features, which is characterized in that the first order
Copper powder filled with sintering in capillary flow channel, second level capillary flow channel and third level capillary flow channel.
7. the LED component soaking plate according to claim 1 based on biomimetic features, which is characterized in that described first inhales
Wick-containing and the second liquid-sucking core are copper powder sintered plate.
8. the LED component soaking plate according to claim 1 based on biomimetic features, which is characterized in that the working medium is
Deionized water or ethyl alcohol.
9. the LED component soaking plate according to claim 1 based on biomimetic features, which is characterized in that in the chamber
Vacuum environment.
10. a kind of LED component, which is characterized in that including such as LED of claim 1 to 6 any one of them based on biomimetic features
Device soaking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711373744.8A CN108119882A (en) | 2017-12-19 | 2017-12-19 | LED component soaking plate and LED component based on biomimetic features |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711373744.8A CN108119882A (en) | 2017-12-19 | 2017-12-19 | LED component soaking plate and LED component based on biomimetic features |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108119882A true CN108119882A (en) | 2018-06-05 |
Family
ID=62230233
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711373744.8A Withdrawn CN108119882A (en) | 2017-12-19 | 2017-12-19 | LED component soaking plate and LED component based on biomimetic features |
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| CN (1) | CN108119882A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398167A (en) * | 2019-07-09 | 2019-11-01 | 广东工业大学 | A kind of trunk type support column soaking plate |
| CN113207264A (en) * | 2021-04-28 | 2021-08-03 | 深圳市科信通信技术股份有限公司 | Power supply heat dissipation device and power supply |
| CN115548523A (en) * | 2022-09-30 | 2022-12-30 | 厦门海辰储能科技股份有限公司 | Battery core, battery module, battery pack and energy storage equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060081360A1 (en) * | 2004-08-18 | 2006-04-20 | Delta Electronics, Inc. | Heat dissipation apparatus and manufacturing method thereof |
| CN1837737A (en) * | 2005-03-23 | 2006-09-27 | 富准精密工业(深圳)有限公司 | Heat pipe |
| CN101594077A (en) * | 2009-07-01 | 2009-12-02 | 哈尔滨工程大学 | A kind of multi-stage capillary pump |
| CN101676672A (en) * | 2008-09-18 | 2010-03-24 | 和硕联合科技股份有限公司 | Temperature-uniforming plate |
| CN101782342A (en) * | 2009-01-16 | 2010-07-21 | 富瑞精密组件（昆山）有限公司 | Heat pipe and method for manufacturing capillary structure thereof |
| CN202750388U (en) * | 2012-06-19 | 2013-02-20 | 迈萪科技股份有限公司 | Highly-efficient vapor chamber |
| CN203243668U (en) * | 2013-05-17 | 2013-10-16 | 奇鋐科技股份有限公司 | Supporting structure of heat dissipation unit |
| CN103542749A (en) * | 2013-10-15 | 2014-01-29 | 华南理工大学 | Simulated liquid absorbing core for heat uniformizing plate |
-
2017
- 2017-12-19 CN CN201711373744.8A patent/CN108119882A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060081360A1 (en) * | 2004-08-18 | 2006-04-20 | Delta Electronics, Inc. | Heat dissipation apparatus and manufacturing method thereof |
| CN1837737A (en) * | 2005-03-23 | 2006-09-27 | 富准精密工业(深圳)有限公司 | Heat pipe |
| CN101676672A (en) * | 2008-09-18 | 2010-03-24 | 和硕联合科技股份有限公司 | Temperature-uniforming plate |
| CN101782342A (en) * | 2009-01-16 | 2010-07-21 | 富瑞精密组件（昆山）有限公司 | Heat pipe and method for manufacturing capillary structure thereof |
| CN101594077A (en) * | 2009-07-01 | 2009-12-02 | 哈尔滨工程大学 | A kind of multi-stage capillary pump |
| CN202750388U (en) * | 2012-06-19 | 2013-02-20 | 迈萪科技股份有限公司 | Highly-efficient vapor chamber |
| CN203243668U (en) * | 2013-05-17 | 2013-10-16 | 奇鋐科技股份有限公司 | Supporting structure of heat dissipation unit |
| CN103542749A (en) * | 2013-10-15 | 2014-01-29 | 华南理工大学 | Simulated liquid absorbing core for heat uniformizing plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398167A (en) * | 2019-07-09 | 2019-11-01 | 广东工业大学 | A kind of trunk type support column soaking plate |
| CN113207264A (en) * | 2021-04-28 | 2021-08-03 | 深圳市科信通信技术股份有限公司 | Power supply heat dissipation device and power supply |
| CN115548523A (en) * | 2022-09-30 | 2022-12-30 | 厦门海辰储能科技股份有限公司 | Battery core, battery module, battery pack and energy storage equipment |
| CN115548523B (en) * | 2022-09-30 | 2024-01-23 | 厦门海辰储能科技股份有限公司 | Battery cell, battery module, battery pack and energy storage equipment |
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Application publication date: 20180605 |