CN108050497A - For the side-emitting LED lamp radiator under superelevation heat flow density - Google Patents
For the side-emitting LED lamp radiator under superelevation heat flow density Download PDFInfo
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- CN108050497A CN108050497A CN201810143982.8A CN201810143982A CN108050497A CN 108050497 A CN108050497 A CN 108050497A CN 201810143982 A CN201810143982 A CN 201810143982A CN 108050497 A CN108050497 A CN 108050497A
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- led lamp
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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
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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
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
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- 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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- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The disclosure provides a kind of side-emitting LED lamp radiator under superelevation heat flow density, including：Hollow heat-dissipating cavity, inside hold heat radiation working medium, including：Open channel；And hydrophilic coating, the hydrophilic coating Surface Creation polarized molecular radical, hydrophilic coating and polar molecule group are used to improve the fluid infusion ability of the open channel.The disclosure provide for the side-emitting LED lamp radiator under superelevation heat flow density by setting the polar molecule group of hydrophilic coating and hydrophilic coating surface, the cooperative reinforcing effect of the two can greatly improve the wetting characteristics on open channel surface, greatly increase the capillary gradients in open channel, when taking hot heat sink vertical placement, the heat radiation working medium of hollow heat-dissipating cavity bottom is spontaneous under big capillary gradients driving to be flowed upwards along open channel, it is obviously improved moistening height of the heat radiation working medium in open channel, it ensure that high heat-exchanging performance heat sink under superelevation heat flow density and high reliability.
Description
Technical field
This disclosure relates to technical field of heat dissipation more particularly to a kind of side-emitting LED lamp under superelevation heat flow density dissipate
Hot device.
Background technology
Many light-emitting LED lamps and lanterns of lighting area offside, especially powerful side-emitting LED lamps and lanterns have active demand, such as
Landscape light in city, construction wall illumination, the illumination of remote flood lighting, light fishery.It is state-of-the-art at present glimmering using block
The COB integrated LED single light sources power density of light conversion material is up to 50~500W/cm2, because LED chip is during the work time
Electric energy there are about 70% can change into heat, and high power density must be with height fever heat flow density, if golf calorific value cannot
It effectively disperses, then spectrum change, light efficiency can be caused to reduce, the lost of life.When heat flow density is more than 150W/cm2, already exceed often
The critical heat flux density of pool boiling phase-change heat-exchange occurs for scale cun surface, may be defined as superelevation heat flow density.Therefore it is powerful
The development of side-emitting LED lamps and lanterns is mainly restricted with application by heat dissipation, it is necessary to solve light-emitting LED lamps and lanterns on the downside of superelevation heat flow density
High efficiency and heat radiation problem.
In the prior art using Microgroove group composite phase change radiator, its take heat it is heat sink on build size tens to hundreds of
The open micro-channel array structure of micron, when taking hot heat sink vertical placement, the capillary pressure of open micro-channel formation
Power gradient can drive liquid working substance to flow up, and form the wetting areas of certain altitude, and the three-phase line of contact area in passage
Domain promotes the formation of extension meniscus evaporation thin film, under the conditions of high heat load, it may occur that thin liquid film evaporates and thick liquid film area
The composite phase-change heat exchange of domain kernel state boiling, is a kind of typical high-performance passive minute yardstick phase-change heat-exchange technology, can be by
For realizing the heat transfer process of the high coefficient of heat transfer and high heat flux density under low thermal resistance and condition of small temperature difference, current takes hot-fluid
Density is up to 400W/cm2, it is the currently the only quilt for being likely to be suited for light-emitting LED lamps and lanterns high efficiency and heat radiation on the downside of superelevation heat flow density
Dynamic formula technology.
However during the disclosure is realized, applicants have discovered that, under the conditions of superelevation heat flow density, as hot-fluid is close
The further rise of degree, the liquid working substance in heat sink open micro-channel array will become to be easy to it is dry, once liquid pool
Dry place is not replenished in time in interior liquid working substance, then can not continuously form thin liquid film and thick liquid film region, can not just send out yet
The thin liquid film evaporation of raw high intensity and the composite phase-change heat exchange of thick liquid film nucleate boiling, heat sink heat dissipation performance and reliability are significantly
Decline, limit further improving for Microgroove group composite phase change radiator heat exchange property under the conditions of superelevation heat flow density, it is serious to hinder
The popularization and application of the light-emitting LED lamps and lanterns of high-power side are hindered.
The content of the invention
(1) technical problems to be solved
Based on above-mentioned technical problem, the disclosure provides a kind of side-emitting LED lamp radiator under superelevation heat flow density,
Easily dried up under the conditions of superelevation heat flow density with alleviating the heat radiation working medium in radiator of the prior art, can not continuously formed
Thin liquid film and thick liquid film region, so can not realize the light-emitting LED lamps and lanterns of high-power side efficiently highly reliable heat dissipation the technical issues of.
(2) technical solution
The disclosure provides a kind of side-emitting LED lamp radiator under superelevation heat flow density, including：Hollow heat dissipation cavity
Body, for holding heat radiation working medium, the side-wall outer side of the hollow heat-dissipating cavity is used to connect LED light source for inside, including：It is open logical
Road is arranged on the back side of the corresponding side wall of the LED light source, and the heat radiation working medium is driven along described open using capillary phenomenon
Passage flows；And hydrophilic coating, it is arranged on the surface of the open channel, the hydrophilic coating Surface Creation polarized molecule
Group, the hydrophilic coating and the polar molecule group are used to improve the fluid infusion ability of the open channel；Wherein, it is described
Heat radiation working medium is flowed into the open channel, takes the heat of the LED light source away by the composite phase-change of the heat radiation working medium,
And it is dissipated in environment.
In some embodiments of the present disclosure, the open channel includes N items, and open channel described in N items is set side by side
It puts；Wherein N >=10.
In some embodiments of the present disclosure, the arranging density of the open channel is not less than 5/cm.
In some embodiments of the present disclosure, the cross section of the open channel is rectangle, trapezoidal, triangle, circular arc
Shape or irregular figure.
In some embodiments of the present disclosure, wherein：The side wall of the hollow heat-dissipating cavity is pacified comprising at least one plane
Dress face, the LED light source are connected on the Plane Installation face；M radiating fin is provided on the outside of the hollow heat-dissipating cavity
Piece, M circumferential arrays of the radiating fin along the hollow heat-dissipating cavity outer wall；M≥1.
In some embodiments of the present disclosure, the surface of the radiating fin is provided with ripple, for expanding the heat dissipation
The heat loss through convection area of fin.
In some embodiments of the present disclosure, further include：Fan, air-out direction is towards the radiating fin, for strong
Change the heat convection of the radiating fin.
In some embodiments of the present disclosure, the internal face of the heat radiation working medium ullage in the hollow heat-dissipating cavity
It is provided with hydrophobic coating.
In some embodiments of the present disclosure, wherein：The hydrophilic coating includes：Woelm Alumina, porous oxidation niobium, oxygen
Change at least one of zinc sodium, titanium oxide, zinc oxide, tin oxide, vanadic anhydride, copper oxide, cuprous oxide, Kocide SD；
The polar molecule group includes：In carboxylic acid group, sulfonic group, phosphate, amino, quaternary ammonium group, hydroxyl, carboxylate, block polyether
At least one；The hydrophobic coating includes：Graphene or carbon nanotubes；The hollow heat-dissipating cavity and the radiating fin bag
Contain：At least one of metal, alloy, semiconductor, ceramics, oxide；Wherein, hollow heat-dissipating cavity and the radiating fin
Thermal conductivity factor is not less than 20W/mK.
In some embodiments of the present disclosure, wherein：The hollow heat-dissipating cavity includes：Opening, is arranged on described hollow
On the wall surface of heat-dissipating cavity, for being packed into the heat radiation working medium into the hollow heat-dissipating cavity and changing the hollow heat dissipation
The in vivo vacuum degree of chamber；And sealing element, setting is matched with the opening, for sealing the hollow heat-dissipating cavity；It is described to dissipate
Hot working fluid includes：At least one of distilled water, deionized water, ethyl alcohol, methanol, acetone or refrigerant.
In some embodiments of the present disclosure, wherein：The width of the open channel is between 50 μm to 4000 μm；
The depth of the open channel is between 50 μm to 4000 μm；The spacing of the two adjacent open channels between 50 μm extremely
Between 4000 μm；The height of the hollow heat-dissipating cavity is between 50mm between 1000mm；The diameter of the hollow heat-dissipating cavity
Between 20mm between 800mm.
(3) advantageous effect
It can be seen from the above technical proposal that the heat sink and its manufacturer being used under superelevation heat flow density that the disclosure provides
Method has the advantages that one of them or a portion：
(1) by setting the polar molecule group of hydrophilic coating and hydrophilic coating surface, the cooperative reinforcing effect of the two
The wetting characteristics on open channel surface can be greatly improved, greatly increases the capillary gradients in open channel, when taking heat
During heat sink vertical placement, the heat radiation working medium of hollow heat-dissipating cavity bottom is opened on spontaneous upward edge under big capillary gradients driving
The flowing of formula passage is put, is obviously improved moistening height of the heat radiation working medium in open channel, thin liquid film can be occurred by being significantly increased
The area of the wetting zones of evaporation and the composite phase-change heat exchange of thick liquid film nucleate boiling, while but also under superelevation heat flow density
Heat sink to have timely fluid infusion ability, once dry region occur in hot localised points, under the driving of big capillary gradients, radiate work
Matter adds to rapidly dry area, soaks the surface of open channel again, and thin liquid film evaporation and thick liquid film core state boiling persistently occurs
The high-strength composite phase transformation strengthening heat transfer process risen ensure that high heat-exchanging performance heat sink under superelevation heat flow density and highly reliable
Property；
(2) it is the capillary gradients driving heat radiation working medium formed by the structure of open channel itself to take in thermal process
Flowing, without additional energy；
(3) by setting radiating fin, hollow heat-dissipating cavity and extraneous contact area is improved, improves heat exchange efficiency；
(4) by setting ripple on radiating fin, expand the heat loss through convection area of radiating fin, further improve heat exchange
Efficiency；
(5) by setting fan, the air flow rate between radiating fin can be accelerated, so as in time by radiating fin
Temperature is distributed into environment；
(6) by setting hydrophobic coating, the liquid heat radiation working medium condensed on hollow heat-dissipating cavity inner wall can be made timely
The bottom of hollow heat-dissipating cavity is dripped or flow to, cooling energy recovery is on the one hand added, on the other hand also makes hollow heat dissipation cavity
The liquid level of the heat radiation working medium of body bottom remains unchanged substantially, and then ensures that open channel being capable of timely fluid infusion；
(7) a plurality of open channel is arranged side by side, and the width of open channel, depth and spacing are between 20 μm
To between 5000 μm, heat exchange area is not only increased, it is often more important that the interfacial effect and dimensional effect of open channel can be right
The flowing of heat radiation working medium and phase-change heat-exchange performance generate extraordinary invigoration effect, make its surface that thin liquid film evaporation and thick liquid film occur
The high-strength composite phase transformation strengthening heat transfer process of nucleate boiling, theoretical maximum take hot heat flow density to can reach 104W/cm2Number
Magnitude, phase-change heat transfer coefficient reach 106W/(m2The order of magnitude DEG C) takes hot property to be much larger than the phase transformation that stock size surface occurs
Heat exchange；
(8) raising of heat exchange efficiency can cause radiator to use less section bar, and volume is compacter, have structure letter
The advantages such as list, small size, lightweight, reliability height, long lifespan.
Description of the drawings
Fig. 1 is structure diagram of the embodiment of the present disclosure for the side-emitting LED lamp radiator under superelevation heat flow density.
Fig. 2 is the dimensional structure diagram of open channel in side-emitting LED lamp radiator shown in Fig. 1.
Fig. 3 a are the close-up schematic view of open channel in side-emitting LED lamp radiator shown in Fig. 1.
Fig. 3 b are that the partial enlargement of another structure of open channel in side-emitting LED lamp radiator shown in Fig. 1 shows
It is intended to.
Fig. 3 c are that the partial enlargement of the yet another construction of open channel in side-emitting LED lamp radiator shown in Fig. 1 shows
It is intended to.
Fig. 3 d are that the partial enlargement of the yet another construction of open channel in side-emitting LED lamp radiator shown in Fig. 1 shows
It is intended to.
Fig. 3 e are that the partial enlargement of the yet another construction of open channel in side-emitting LED lamp radiator shown in Fig. 1 shows
It is intended to.
Fig. 4 is the top view of side-emitting LED lamp radiator shown in Fig. 1.
Fig. 5 is that another structure of the embodiment of the present disclosure for the side-emitting LED lamp radiator under superelevation heat flow density is shown
It is intended to.
【Embodiment of the present disclosure main element symbol description in attached drawing】
The hollow heat-dissipating cavities of 10-；20- heat radiation working mediums；30- radiating fins；
40- fans
11- open channels；12- hydrophilic coatings；13- hydrophobic coatings；
14- is open；15- sealing elements；31- ripples；
111- Plane Installations face；121- polar molecule groups.
Specific embodiment
What the embodiment of the present disclosure provided is used in the side-emitting LED lamp radiator under superelevation heat flow density, passes through and sets parent
Water coating and the polar molecule group on hydrophilic coating surface, the cooperative reinforcing effect of the two can greatly improve open channel table
The wetting characteristics in face greatly increases the capillary gradients in open channel, and then improves fluid infusion velocity and ability, ensures
Heat sink high heat-exchanging performance and high reliability under superelevation heat flow density.
Purpose, technical scheme and advantage to make the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Fig. 1 is structure diagram of the embodiment of the present disclosure for the side-emitting LED lamp radiator under superelevation heat flow density.Figure
2 be the dimensional structure diagram of open channel in side-emitting LED lamp radiator shown in Fig. 1.Fig. 3 a are the hair of side shown in Fig. 1
The close-up schematic view of open channel in light LED lamp heat sink.
The present embodiment provides a kind of side-emitting LED lamp radiator under superelevation heat flow density, as shown in Fig. 1-Fig. 3 a,
Including：Hollow heat-dissipating cavity 10, for holding heat radiation working medium 20, the side-wall outer side of the hollow heat-dissipating cavity 10 is used to connect for inside
LED light source, including：Open channel 11 is arranged on the back side of the corresponding side wall of LED light source, is driven and radiated using capillary phenomenon
Working medium 20 is flowed along open channel 11；And hydrophilic coating 12, it is arranged on the surface of open channel 11, the hydrophilic coating table
Face generation polarized molecular radical 121, hydrophilic coating 12 and polar molecule group 121 are used to improve the fluid infusion of open channel 11
Ability；Wherein, heat radiation working medium 20 is flowed into open channel 11, and LED light source is taken away by the composite phase-change of heat radiation working medium 20
Heat, and be dissipated in environment, by setting the polar molecule group of hydrophilic coating and hydrophilic coating surface, the collaboration of the two
Strengthening effect can greatly improve the wetting characteristics on open channel surface, greatly increase the capillary pressure ladder in open channel
Degree, when taking hot heat sink vertical placement, the heat radiation working medium of hollow heat-dissipating cavity bottom under big capillary gradients driving from
It is sent to along open channel and flows, be obviously improved moistening height of the heat radiation working medium in open channel, being significantly increased can be with
The area of the wetting zones of thin liquid film evaporation and the composite phase-change heat exchange of thick liquid film nucleate boiling occurs, while but also in superelevation
It is heat sink under heat flow density that there is timely fluid infusion ability, once there is dry region in hot localised points, in the drive of big capillary gradients
Under dynamic, heat radiation working medium adds to rapidly dry area, soaks the surface of open channel again, and thin liquid film evaporation and thickness persistently occurs
The high-strength composite phase transformation strengthening heat transfer process of liquid film nucleate boiling, ensure that high heat-exchanging performance heat sink under superelevation heat flow density
And high reliability, and it is the capillary gradients driving heat dissipation formed by the structure of open channel itself to take in thermal process
Working fluid flow, without additional energy.
In the present embodiment, open channel 11 includes N items, and N open channel 11 is set up in parallel；Wherein N >=10.
In the present embodiment, the arranging density of open channel 11 is not less than 5/cm.
Fig. 3 b are that the partial enlargement of another structure of open channel in side-emitting LED lamp radiator shown in Fig. 1 shows
It is intended to.Fig. 3 c are the partial enlargement signal of the yet another construction of open channel in side-emitting LED lamp radiator shown in Fig. 1
Figure.Fig. 3 d are the close-up schematic view of the yet another construction of open channel in side-emitting LED lamp radiator shown in Fig. 1.
Fig. 3 e are the close-up schematic view of the yet another construction of open channel in side-emitting LED lamp radiator shown in Fig. 1.
In the present embodiment, as shown in Fig. 3 a- Fig. 3 e, the cross section of open channel 11 is rectangle, trapezoidal, triangle,
Arc-shaped or irregular figure.
Fig. 4 is the top view of side-emitting LED lamp radiator shown in Fig. 1.
In the present embodiment, as shown in figure 4, wherein：The side wall of hollow heat-dissipating cavity 10 includes at least one Plane Installation
Face 111, LED light source are connected on Plane Installation face 111；The outside of hollow heat-dissipating cavity 10 is provided with M radiating fin 30, M
Circumferential array of a radiating fin 30 along hollow 10 outer wall of heat-dissipating cavity；Hollow dissipate by setting radiating fin 30, is improved in M >=1
Hot cavity 10 and extraneous contact area, improve heat exchange efficiency.
In the present embodiment, as shown in Figure 1, the surface of radiating fin 30 is provided with ripple 31, for expanding radiating fin
30 heat loss through convection area, so as to further improve heat exchange efficiency.
Fig. 5 is that another structure of the embodiment of the present disclosure for the side-emitting LED lamp radiator under superelevation heat flow density is shown
It is intended to.
In the present embodiment, as shown in figure 5, further including：Fan 40, air-out direction is towards radiating fin 30, for strong
Change the heat convection of radiating fin 30, by setting fan, the air flow rate between radiating fin can be accelerated, so as in time
The temperature of radiating fin is distributed into environment.
In the present embodiment, as shown in Figure 1 and Figure 5, in hollow heat-dissipating cavity 10 the heat radiation working medium ullage it is interior
Wall surface is provided with hydrophobic coating 13, by setting hydrophobic coating 13, can make to condense in the liquid on hollow 10 inner wall of heat-dissipating cavity
The bottom of hollow heat-dissipating cavity 10 is dripped or flow in time to state heat radiation working medium 20, on the one hand adds cooling energy recovery, another
Aspect also makes the liquid level of the heat radiation working medium 10 of hollow 10 bottom of heat-dissipating cavity remain unchanged substantially, and then ensures open channel 11
It being capable of timely fluid infusion.
In the present embodiment, wherein：Hydrophilic coating 12 includes：Woelm Alumina, porous oxidation niobium, zinc oxide sodium, oxidation
At least one of titanium, zinc oxide, tin oxide, vanadic anhydride, copper oxide, cuprous oxide, Kocide SD；Polar molecule group
121 include：At least one of carboxylic acid group, sulfonic group, phosphate, amino, quaternary ammonium group, hydroxyl, carboxylate, block polyether；It dredges
Water coating 13 includes：Graphene or carbon nanotubes；Hollow heat-dissipating cavity 10 and radiating fin 30 include：Metal, alloy are partly led
At least one of body, ceramics, oxide；Wherein, the thermal conductivity factor of hollow heat-dissipating cavity 10 and radiating fin 30 is not less than
20W/m·K。
In the present embodiment, as shown in Figure 1 and Figure 5, wherein：Hollow heat-dissipating cavity 10 includes：Opening 14, is arranged on hollow
On the wall surface of heat-dissipating cavity 10, for being packed into heat radiation working medium 20 into hollow heat-dissipating cavity 10 and changing hollow heat-dissipating cavity 10
Interior vacuum degree；And sealing element 15, setting is matched with opening 14, for sealing hollow heat-dissipating cavity 10；Heat radiation working medium 20 is wrapped
Contain：At least one of distilled water, deionized water, ethyl alcohol, methanol, acetone or refrigerant.
In the present embodiment, wherein：The width of open channel 11 is between 50 μm to 4000 μm；Open channel 11
Depth between 50 μm to 4000 μm；The spacing of two adjacent open channels 11 is between 50 μm to 4000 μm；It is hollow
The height of heat-dissipating cavity 10 is between 50mm between 1000mm；The diameter of hollow heat-dissipating cavity 10 between 20mm between 800mm,
A plurality of open channel 11 is arranged side by side, and the width of open channel 11, depth and spacing are between 20 μm to 5000 μ
Between m, heat exchange area is not only increased, it is often more important that the interfacial effect and dimensional effect of open channel 11 can be to the works that radiates
The flowing of matter 20 and phase-change heat-exchange performance generate extraordinary invigoration effect, make its surface that thin liquid film evaporation and thick liquid film core state occur
The high-strength composite phase transformation strengthening heat transfer process of boiling, theoretical maximum take hot heat flow density to can reach 104W/cm2The order of magnitude,
Phase-change heat transfer coefficient reaches 106W/(m2DEG C) the order of magnitude, take hot property be much larger than stock size surface occur phase-change heat-exchange.
In addition, the raising of heat exchange efficiency can cause radiator, using less section bar, volume is compacter, has structure
Simply, the advantages such as small size, lightweight, reliability height, long lifespan
According to above description, what those skilled in the art should provide the disclosure sends out for the side under superelevation heat flow density
Light LED lamp heat sink has clear understanding.
In conclusion the side-emitting LED lamp radiator being used under superelevation heat flow density that the disclosure provides, which passes through, sets parent
The polar molecule group 121 on 12 surface of water coating 12 and hydrophilic coating, the cooperative reinforcing effect of the two can greatly improve opening
The wetting characteristics on 11 surface of formula passage so that it is heat sink under superelevation heat flow density that there is timely fluid infusion ability, it ensure that excessive heat
Heat sink high heat-exchanging performance and high reliability under current density.
It should also be noted that, the direction term mentioned in embodiment, for example, " on ", " under ", "front", "rear", " left side ",
" right side " etc. is only the direction of refer to the attached drawing, is not used for limiting the protection domain of the disclosure.Through attached drawing, identical element by
Same or similar reference numeral represents.When understanding of this disclosure may be caused to cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present disclosure
Content.In addition, in the claims, any reference symbol between bracket should not be configured to the limit to claim
System.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description of the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The disclosure of shield requires features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim is in itself
Separate embodiments all as the disclosure.
Particular embodiments described above has carried out the purpose, technical solution and advantageous effect of the disclosure further in detail
It describes in detail bright, it should be understood that the foregoing is merely the specific embodiments of the disclosure, is not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (11)
1. a kind of side-emitting LED lamp radiator under superelevation heat flow density, including：
Hollow heat-dissipating cavity, for holding heat radiation working medium, the side-wall outer side of the hollow heat-dissipating cavity is used to connect LED light for inside
Source, including：
Open channel is arranged on the back side of the corresponding side wall of the LED light source, and the heat radiation working medium is driven using capillary phenomenon
It is flowed along the open channel；And
Hydrophilic coating is arranged on the surface of the open channel, the hydrophilic coating Surface Creation polarized molecular radical, described
Hydrophilic coating and the polar molecule group are used to improve the fluid infusion ability of the open channel；
Wherein, the heat radiation working medium is flowed into the open channel, is taken away by the composite phase-change of the heat radiation working medium described
The heat of LED light source, and be dissipated in environment.
2. the side-emitting LED lamp radiator according to claim 1 under superelevation heat flow density, the open channel
Including N items, open channel described in N items is set up in parallel；
Wherein N >=10.
3. the side-emitting LED lamp radiator according to claim 2 under superelevation heat flow density, the open channel
Arranging density be not less than 5/cm.
4. the side-emitting LED lamp radiator according to claim 1 under superelevation heat flow density, the open channel
Cross section for rectangle, trapezoidal, triangle, arc-shaped or irregular figure.
5. the side-emitting LED lamp radiator according to claim 1 under superelevation heat flow density, wherein：
The side wall of the hollow heat-dissipating cavity includes at least one Plane Installation face, and the LED light source is connected to the plane peace
On dress face；
It is provided with M radiating fin on the outside of the hollow heat-dissipating cavity, the M radiating fins are along the hollow heat-dissipating cavity
The circumferential array of outer wall；M≥1.
6. the side-emitting LED lamp radiator according to claim 5 under superelevation heat flow density, the radiating fin
Surface is provided with ripple, for expanding the heat loss through convection area of the radiating fin.
7. the side-emitting LED lamp radiator according to claim 5 under superelevation heat flow density further includes：Fan,
Air-out direction is towards the radiating fin, for strengthening the heat convection of the radiating fin.
8. the side-emitting LED lamp radiator according to claim 5 under superelevation heat flow density, the hollow heat dissipation cavity
The internal face of the internal heat radiation working medium ullage is provided with hydrophobic coating.
9. the side-emitting LED lamp radiator according to claim 8 under superelevation heat flow density, wherein：
The hydrophilic coating includes：Woelm Alumina, porous oxidation niobium, zinc oxide sodium, titanium oxide, zinc oxide, tin oxide, five oxygen
Change at least one of two vanadium, copper oxide, cuprous oxide, Kocide SD；
The polar molecule group includes：Carboxylic acid group, sulfonic group, phosphate, amino, quaternary ammonium group, hydroxyl, carboxylate, block gather
At least one of ether；
The hydrophobic coating includes：Graphene or carbon nanotubes；
The hollow heat-dissipating cavity and the radiating fin include：At least one in metal, alloy, semiconductor, ceramics, oxide
Kind；
Wherein, the thermal conductivity factor of hollow heat-dissipating cavity and the radiating fin is not less than 20W/mK.
10. the side-emitting LED lamp radiator according to any one of claim 1 to 9 under superelevation heat flow density,
In：
The hollow heat-dissipating cavity includes：
Opening, is arranged on the wall surface of the hollow heat-dissipating cavity, for being packed into the heat dissipation into the hollow heat-dissipating cavity
Working medium and the change hollow in vivo vacuum degree of heat dissipation cavity；And
Sealing element matches setting, for sealing the hollow heat-dissipating cavity with the opening；
The heat radiation working medium includes：At least one of distilled water, deionized water, ethyl alcohol, methanol, acetone or refrigerant.
11. the side-emitting LED lamp radiator according to any one of claim 1 to 9 under superelevation heat flow density,
In：
The width of the open channel is between 50 μm to 4000 μm；
The depth of the open channel is between 50 μm to 4000 μm；
The spacing of the two adjacent open channels is between 50 μm to 4000 μm；
The height of the hollow heat-dissipating cavity is between 50mm between 1000mm；
The diameter of the hollow heat-dissipating cavity is between 20mm between 800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143982.8A CN108050497A (en) | 2018-02-11 | 2018-02-11 | For the side-emitting LED lamp radiator under superelevation heat flow density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143982.8A CN108050497A (en) | 2018-02-11 | 2018-02-11 | For the side-emitting LED lamp radiator under superelevation heat flow density |
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| WO2020052224A1 (en) * | 2018-09-10 | 2020-03-19 | 长春希达电子技术有限公司 | Phase transformation liquid and heat transfer module containing same |
| CN112228236A (en) * | 2020-10-20 | 2021-01-15 | 江苏大学 | Internal combustion engine cylinder sleeve and machining method thereof |
| CN113840519A (en) * | 2021-09-16 | 2021-12-24 | 中国科学院工程热物理研究所 | Double-boiling radiator |
| CN113915594A (en) * | 2021-09-16 | 2022-01-11 | 中国科学院工程热物理研究所 | Radiator with double-phase change cavity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020052224A1 (en) * | 2018-09-10 | 2020-03-19 | 长春希达电子技术有限公司 | Phase transformation liquid and heat transfer module containing same |
| CN112228236A (en) * | 2020-10-20 | 2021-01-15 | 江苏大学 | Internal combustion engine cylinder sleeve and machining method thereof |
| CN112228236B (en) * | 2020-10-20 | 2021-11-05 | 江苏大学 | Internal combustion engine cylinder sleeve and machining method thereof |
| CN113840519A (en) * | 2021-09-16 | 2021-12-24 | 中国科学院工程热物理研究所 | Double-boiling radiator |
| CN113915594A (en) * | 2021-09-16 | 2022-01-11 | 中国科学院工程热物理研究所 | Radiator with double-phase change cavity |
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