CN203733776U - Totally-enclosed phase-change type radiator and LED lamp therewith - Google Patents
Totally-enclosed phase-change type radiator and LED lamp therewith Download PDFInfo
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- CN203733776U CN203733776U CN201320630055.1U CN201320630055U CN203733776U CN 203733776 U CN203733776 U CN 203733776U CN 201320630055 U CN201320630055 U CN 201320630055U CN 203733776 U CN203733776 U CN 203733776U
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Abstract
The utility model discloses a totally-enclosed phase-change type radiator and an LED lamp therewith. The radiator comprises a radiator body which is provided with a through hole. One end of the through hole is connected with an end cover, and the other end of the through hole is provided with an installation seat in a welding manner, wherein the installation seat is used for installing a heating element. The radiator body, the end cover and the installation seat form a sealed inner cavity. The inner cavity contains liquid phase-change materials. The inner wall of the through hole is provided with a groove. During manufacture, a method of friction welding is used. According to the utility model, the end cover is provided with no holes, and the sealing effect is better.
Description
Technical field
The utility model relates to a kind of totally-enclosed phase-change type radiator and has the LED light fixture of this radiator, belongs to heat abstractor preparing technical field.
Background technology
In recent years, the energy-conservation environmental protection industries such as photovoltaic, Led have larger development, but the heat dissipation problem of high-power electric appliance element seriously affects its life-span and performance.Phase-change type radiator can solve its heat transfer, heat dissipation problem well.The principle of phase-change type radiator is to utilize the cyclic process of the liquid boiling vaporization → condensation of gas of specific phase-change liquid under uniform temperature interval liquefaction and the function that realizes heat absorption → heat transfer → heat radiation, and its heat-transfer effect is 400 times of copper material, and using value is huge.Granted publication number is CN101561129B, name is called the Chinese invention patent of " with the lamp being made up of LED of phase change radiator structure ", a kind of phase-change heat sink is disclosed, this radiator comprises radiator body, the two ends of this radiator body are welded with end cap, radiator body forms the inner chamber of the sealing of holding phase-change liquid together with two end cap, the upper reserved screw hole that vacuumizes valve nozzle of installing of one of end cap.In the time making, phase-change liquid injects inner chamber by screw hole and controls injection rate and makes phase-change liquid not exclusively be full of inner chamber, and then on screw hole, dress vacuumizes valve nozzle, extracts the air in inner chamber out by vacuumizing valve nozzle, and then sealing vacuumizes valve nozzle.
Summary of the invention
The utility model provides a kind of totally-enclosed phase-change type radiator and has the LED light fixture of this radiator.
For achieving the above object, the first technical scheme that the present invention adopts is: a kind of totally-enclosed phase-change type radiator, comprise a radiator body, and this radiator body offers through hole, one end of this through hole is provided with end cap, and the other end is provided with to install the mount pad of heater element; Described radiator body, end cap and mount pad form the inner chamber of a sealing, and this inner chamber accommodates liquid phase-change material; The inwall of described through hole is provided with groove.
Preferred technical scheme is: described end cap is positioned at described through hole in whole or in part; Described mount pad part is positioned at described through hole.
Preferred technical scheme is: described mount pad is evenly equipped with multiple projections towards the surface of described through hole, and height between described projection is inconsistent.
Preferred technical scheme is: the mode of described installation is the mode of interference assembling or the mode of friction welding (FW).
For achieving the above object, the second technical scheme that the present invention adopts is: a kind of LED light fixture, described totally-enclosed phase-change type radiator is installed on LED light fixture as heat abstractor.
Because technique scheme is used, the utility model compared with prior art has following advantages:
Due to atresia on end cap of the present utility model, establish with prior art end cap the technology that vacuumizes valve nozzle compared with, its sealing effectiveness is better.
Brief description of the drawings
Accompanying drawing 1 is schematic perspective view before each part welding of the utility model.
Accompanying drawing 2 is utility model structure cross-sectional schematic.
Accompanying drawing 3 is end cap schematic top plan view.
The cross-sectional schematic of the first execution mode that accompanying drawing 4 is end cap.
The cross-sectional schematic of the second execution mode that accompanying drawing 5 is end cap.
The cross-sectional schematic of the third execution mode that accompanying drawing 6 is end cap.
The cross-sectional schematic of the 4th kind of execution mode that accompanying drawing 7 is end cap.
In above accompanying drawing, 1, end cap; 2, radiator body; 3, mount pad; 4, radiating fin; 5, solid phase change material; 6, liquid phase-change material; 7, steam state phase-change material; 8, projection.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment mono-: a kind of totally-enclosed phase-change type radiator and there is the LED light fixture of this radiator
Shown in accompanying drawing 1 and accompanying drawing 2, a kind of totally-enclosed phase-change type radiator, comprises a radiator body 2, and structure and the prior art of radiator body 2 are basic identical, have the cylindrical shell of a metal, and this metal cylinder is outward extended with multiple radiating fins 4.The general Heat Conduction Materials such as copper, aluminium that adopt of mount pad 3 are made, transmit the heater element (as the light-emitting diode of LED lamp) that is arranged on mount pad the heat that produces to phase-change material.Radiator body 2 offers through hole, and the cross sectional shape of through hole can be arbitrary shape.One end of described through hole is welded with end cap 1, and the other end is welded with to install the mount pad 3 of heater element.In the welding process of end cap 1 and mount pad 3, as long as adopting the welding method of friction welding (FW) to be welded on radiator body 2, one can meet requirement of the present invention.For example first by common welding method, mount pad is welded on to one end of through hole, then with friction welding (FW), end cap is welded on to the other end of through hole.Described radiator body 2, end cap 1 and mount pad 3 form the inner chamber of a sealing, and this inner chamber accommodates liquid phase-change material 6; The inwall of described through hole is provided with groove, and this groove can promote liquid-vapour phase to become.The present invention adopts thermal release that mode that liquid-vapour phase becomes produces heater element to external environment.
Described end cap 1 part is positioned at described through hole, also be that end cap 1 is made up of two parts, the diameter of a part is greater than another part, then stretch in through hole with smaller-diameter portion, diameter major part is stayed outside through hole, and the object of intended diameter major part is the clamping device clamping end cap of being convenient to friction-welding machine in the time carrying out friction welding (FW).Described mount pad part is positioned at described through hole, is also that part mount pad stretches in through hole, and the surface of another part is for installing heater element.
In the time making:
First described end cap 1 is welded on to one end of the through hole of described radiator body 2, adopts in the present embodiment the method for friction welding (FW) to implement herein, in other embodiment, can adopt existing solder technology.Then in described through hole, add solid phase change material 5, do not add the object of liquid phase-change material to be because when ensuing friction welding (FW) to through hole, liquid phase-change material can be because of high-speed rotary then is overflowed radiator body 2.Then in described through hole, add steam state phase-change material 7 to drive the air being present in through hole out of, next adopt the welding method of friction welding (FW) to be welded on the other end of the through hole of described radiator body 2 by described in order to the mount pad 3 that heater element is installed, thereby formed the inner airtight inner chamber that accommodates phase-change material.
In other embodiments, also can to add solid phase change material 5 and steam state phase-change material 7 in described through hole time, first in described through hole, add steam state phase-change material 7 to drive air, then add solid phase change material 5 in described through hole.
In order to prevent having air to enter in through hole in the time carrying out friction welding (FW), described friction welding (FW) carries out under steam state phase-change material atmosphere.
The heat abstractor of making is referring to shown in accompanying drawing 2, and the through hole of end cap 1, radiator body 2 and mount pad 3 have formed an airtight inner chamber.In inner chamber, be from bottom to top solid phase change material 5, liquid phase-change material 6 and steam state phase-change material 7.Phase-change material of the present invention can be water.The physical state that is present in inner chamber is generally liquid state and steam state.The present invention utilizes variation absorption and the release heat of liquid state-steam state.
Shown in accompanying drawing 3～7, better execution mode is: mount pad 3 is evenly equipped with multiple protruding 8 towards the surface of described through hole, and the quantity of projection 8 determines according to the area of mount pad 3, and the larger projection of area is more.According to pool boiling theory, the raising of the evaporation rate of projection to the phase-change material in through hole plays an important role, but only has in the time that projection is exposed the liquid level of liquid phase-change material 6, and projection 8 could wield influence to the evaporation rate of phase-change material.According to pool boiling theory, the shape of projection 8 is little on the evaporation rate impact of phase-change material, the present invention considers from being convenient to process protruding angle, in one embodiment the shape of described projection is designed to cylindric, slightly in the execution mode of difference, add protruding ball on the top of described columned projection at another.In another embodiment, described protruding 8 shape is designed to Pyramid.
In the time of radiator body horizontal positioned, because liquid phase-change material 5 is laid in mount pad 3, when the height design of projection 8 is become to consistent, all projections 8 all can wield influence to the evaporation rate of phase-change material.
In the time of radiator body slant setting, if when the height design of projection 8 becomes consistent, the projection 8 that exists part to be covered completely by liquid phase-change material so, this part projection will not brought into play any impact to the evaporation rate of phase-change material.
In further preferred embodiment, be designed to highly inconsistently by described protruding 8, even like this when radiator body 2 slant setting, still have part projection 8 to be positioned on the liquid level of liquid phase-change material 6, and the evaporation rate of phase-change material is wielded influence.
Better execution mode is that the height design of the projection of the middle section of described mount pad 38 is become to the height lower than described mount pad 3 peripheral regions.When radiator body 2 is to unspecified angle slant setting like this, still has part projection 8 to be positioned on the liquid level of liquid phase-change material 6, and the evaporation rate of phase-change material is wielded influence.
Better execution mode is that the height design of described projection is become to be increased gradually by the surrounding of mount pad 3 described in the mediad of described mount pad 3.The projection of liquid level of exposing like this liquid phase-change material is more.
Better execution mode is that the height design of described projection is become to be increased gradually by the opposite side of mount pad 3 described in a side direction of described mount pad 3.When radiator body is placed to lopsidedness like this, there is a large amount of projections to be positioned on the liquid level of liquid phase-change material.
Better execution mode is that the protruding height design of a side of described mount pad 3 is become to the protruding height higher than described mount pad 3 opposite sides.
The totally-enclosed phase-change type radiator of the present invention is in the time being applied to led, and heater element light-emitting diode is arranged on mount pad 3, then adopts compacting ring, by packing ring, Transparent lamp shade is adjacent to radiator body and compresses, to realize the seal protection to heater element.Packing ring utilizes the elastic reaction of self better to compress Transparent lamp shade.Transparent lamp shade is mainly used to realize the protective effect to heater element.Heater element is the function element that needs heat radiation, and thermal source is fixed by heat-conducting glue and screw and mount pad.
Mount pad 3 is made up of the Heat Conduction Material such as copper, aluminium, transmits the heat of heater element to the liquid phase-change material that is sealed in inner chamber, when heater element light-emitting diode in use, generation heat makes liquid phase-change material realize the phase transformation of liquid → vapour.
The kind of phase-change material can be selected as phase transformation cranking temperature according to working temperature requirement.
Radiator body 2 surroundings have radiating fin 4.By fin 4, the heat of steam state phase-change material is fallen apart in air, make steam state phase-change material realize the phase transformation circulation of vapour → liquid, radiator body 2 one end and mount pad 3 are by being welded to connect, and the other end and end cap are by being welded to connect the phase transformation circulation that realizes phase-change material in closed volume.Radiator body 2 outer rings have 4 screw holes to be used for being connected with power supply electrical equipment, have two through wires holes to be used for away electric wire.
Atresia on end cap.By realizing safe and reliable sealing with the welding of radiator.
The heat transfer efficiency of phase-change heat transfer is 400 times of copper material, but the ratio of the on-condensible gas (air) in radiator body has larger impact to heat transfer efficiency, so phase-change type heat transfer radiator (comprising heat pipe) all will add medium, the on-condensible gas of draining before closed container.What adopt for the good elongated tubular of plasticity is exhaust on one side, the end socket technology that extruding is closed up on one side, and this technology is very ripe, all adopting, but be only applicable to elongated tubule, and head diameter zooms in gradually, end face injustice, aobvious pointed.Larger for caliber, there is radiating fin outward, situation that cannot plasticity end socket, present way is to weld shutoff to form container at the two ends of radiator, container leaves liquid feeding, the screw hole of bleeding, and has added liquid, gets rid of after on-condensible gas lock-screw airtight container again.
Friction welding apparatuses adopts prior art, comprises the first fixture (main axle unit) and the second fixture.The first fixture slides and is located on a vertical guide member arranging, and be in transmission connection with the output shaft of a thrust motor, thrust motor promotes the first fixture and moves up and down along guide member, the second fixture immovably install the first blessing mechanism directly over, first accommodates that mechanism has chuck so that fixed heat sink body separatably.The second retainer has chuck to fix separatably end cap or mount pad.The effect of the second mechanism has rotation drive motor, thereby this rotation drive motor can operate the chuck making on the second fixture around its axis rotation.
In the time carrying out friction welding (FW), by the first fixture chuck fixed heat sink body, (at this moment mount pad can be welded in the hole of described radiator body by existing solder technology respectively, or be welded on by friction welding technology in the hole of described radiator body), the fixing end cap of the second fixture chuck or mount pad.First start rotation drive motor, make end cap or mount pad along its axis High Rotation Speed, then starting thrust motor moves up with gradually near end cap and mount pad radiator body, after radiator body contacts and compresses with end cap or mount pad, first on friction cross section there is bonding and shear in some micro-bulges, and produce frictional heat, along with real contact area increases, friction torque raises rapidly, frictional interface place temperature also rises thereupon, friction cross section is covered by one deck high temperature visco-plasticity metal gradually, now, relative motion between radiator body and end cap or mount pad has occurred in visco-plasticity metal inside in fact, heat production mechanism changes the moulding distortion heat production in visco-plasticity metal level into by the frictional heat at initial stage, under heat activation, this layer of visco-plasticity metal generation dynamic recrystallization, resistance of deformation is reduced, therefore friction torque reduces after being elevated to a certain degree (previous peaks moment of torsion) gradually.Along with frictional heat is to the conduction of both sides workpiece, solder side both sides temperature also raises gradually, and under axial compressive force effect, radially Plastic Flow occurs weld metal, thereby forms overlap, and axial shortening amount increases gradually.Extend with fraction time, frictional interface temperature and friction torque substantially constant, Temperature Distribution district broadens gradually, and overlap increases gradually, and this stage is referred to as quasi-steady friction phase.In this stage, it is constant that friction pressure and rotating speed keep.After Temperature Distribution, the distortion in friction welding district acquire a certain degree, start skidding and axial force be elevated to rapidly the now hurried increase of axial shortening amount of upsetting force setting, and along with interface temperature reduces, friction pressure increases, there is second peak value in friction torque, i.e. rear peak torque.In compressing process and after upset, in pressure maintaining period, weld metal, by phase counterdiffusion and recrystallization, firmly welds together both sides metal, thereby completes whole welding process.In whole welding process, frictional interface temperature generally can not exceed fusing point, therefore friction welding (FW) is solid State Welding.
Embodiment bis-: a kind of totally-enclosed phase-change type radiator and there is the LED light fixture of this radiator
Structure is with embodiment mono-, preparation method is: first by described one end that is welded on the through hole of described radiator body in order to the mount pad of heater element to be installed, then in described through hole, add solid phase change material and steam state phase-change material, next adopt the welding method of friction welding (FW) described end cap to be welded on to the other end of the through hole of described radiator body.When adding solid phase change material and steam state phase-change material in described through hole, first in described through hole, add solid phase change material, and then add steam state phase-change material in described through hole.Described friction welding (FW) carries out under steam state phase-change material atmosphere.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (5)
1. a totally-enclosed phase-change type radiator, is characterized in that: comprise a radiator body, this radiator body offers through hole, and one end of this through hole is provided with end cap, and the other end is provided with to install the mount pad of heater element; Described radiator body, end cap and mount pad form the inner chamber of a sealing, and this inner chamber accommodates liquid phase-change material; The inwall of described through hole is provided with groove.
2. totally-enclosed phase-change type radiator according to claim 1, is characterized in that: described end cap is positioned at described through hole in whole or in part; Described mount pad part is positioned at described through hole.
3. totally-enclosed phase-change type radiator according to claim 1, is characterized in that: described mount pad is evenly equipped with multiple projections towards the surface of described through hole, and height between described projection is inconsistent.
4. totally-enclosed phase-change type radiator according to claim 1, is characterized in that: the mode of described installation is the mode of interference assembling or the mode of friction welding (FW).
5. a LED light fixture, has the totally-enclosed phase-change type radiator described in claim 1-4 any one, it is characterized in that: described totally-enclosed phase-change type radiator is installed on LED light fixture as heat abstractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630055.1U CN203733776U (en) | 2013-10-12 | 2013-10-12 | Totally-enclosed phase-change type radiator and LED lamp therewith |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630055.1U CN203733776U (en) | 2013-10-12 | 2013-10-12 | Totally-enclosed phase-change type radiator and LED lamp therewith |
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| CN203733776U true CN203733776U (en) | 2014-07-23 |
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| CN201320630055.1U Expired - Fee Related CN203733776U (en) | 2013-10-12 | 2013-10-12 | Totally-enclosed phase-change type radiator and LED lamp therewith |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594438A (en) * | 2013-10-12 | 2014-02-19 | 苏州嘉德鲁机电科技有限公司 | Fully-enclosed phase-change type radiator and manufacturing method and applications thereof |
| CN104902732A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | Heat dissipation apparatus |
| CN104896342A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | Liquid-cooled LED (light-emitting diode) lamp |
| CN104896341A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | High-power LED lamp |
-
2013
- 2013-10-12 CN CN201320630055.1U patent/CN203733776U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594438A (en) * | 2013-10-12 | 2014-02-19 | 苏州嘉德鲁机电科技有限公司 | Fully-enclosed phase-change type radiator and manufacturing method and applications thereof |
| CN103594438B (en) * | 2013-10-12 | 2016-08-10 | 苏州嘉德鲁机电科技有限公司 | Totally-enclosed phase-change radiator and manufacture method thereof and application |
| CN104902732A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | Heat dissipation apparatus |
| CN104896342A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | Liquid-cooled LED (light-emitting diode) lamp |
| CN104896341A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | High-power LED lamp |
| CN104896341B (en) * | 2015-06-17 | 2017-06-06 | 东莞市闻誉实业有限公司 | High-powered LED lamp |
| CN104896342B (en) * | 2015-06-17 | 2017-06-16 | 东莞市闻誉实业有限公司 | Liquid-cooling type LED |
| CN104902732B (en) * | 2015-06-17 | 2018-05-15 | 东莞市闻誉实业有限公司 | Radiator |
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| 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: 20140723 Termination date: 20141012 |
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| EXPY | Termination of patent right or utility model |