CN202835276U - Phase change suppressing temperature air duct type cooling device - Google Patents
Phase change suppressing temperature air duct type cooling device Download PDFInfo
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- CN202835276U CN202835276U CN2012203466298U CN201220346629U CN202835276U CN 202835276 U CN202835276 U CN 202835276U CN 2012203466298 U CN2012203466298 U CN 2012203466298U CN 201220346629 U CN201220346629 U CN 201220346629U CN 202835276 U CN202835276 U CN 202835276U
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- cooling device
- air duct
- type cooling
- phase transformation
- phase change
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Abstract
The utility model discloses a phase change suppressing temperature air duct type cooling device. An inner cavity of a metal radiator and a rigid heat conduction base plate at the bottom portion of the metal radiator form a liner airtight space, appropriate amount of cooling liquid is poured into the liner airtight space, an upward convex type sealing upper cover with an exhaust nozzle is arranged on the liner airtight space, the liner airtight space is pumped into negative pressure, vaporization temperature of the cooling liquid is reduced, temperature of a cooled object can be suppressed through phase change, and process is safe, energy-saving, and high-efficient. The phase change suppressing temperature air duct type cooling device has the advantages that the cooling liquid is high-efficient and heat conducting, energy of the phase change is large, and natural air draft heat dissipation is quiet, safe and energy-saving. The phase change suppressing temperature air duct type cooling device further has the advantages of being compact in structure, low in lot manufacturing cost, and appropriate for being used with middle-power light emitting diode (LED) products, high-power light LED products and other products which need cooling.
Description
[technical field]
The present invention relates to a kind of cooling device, be specifically related to a kind of phase transformation pincers warm air cartridge type cooling device.The invention belongs to energy-conserving and environment-protective automatic control technology field.
[background technology]
Electronic equipment normally moves need to guarantee that core component works in suitable temperature, and it's low or too high all can causing is unusually past temperature, can cause equipment fault when serious even major accident occurs.LED lighting source product as emerging green illumination high-tech industry needs suitable operating temperature equally, the work of LED lighting source stability and high efficiency, and its temperature requirement is harsher.Studies show that: every rising 10 degree of LED junction temperature, its light efficiency approximately descends 3%; As surpassing LED junction temperature limiting value, will cause LED to lose efficacy, even cause led light source device permanent damages.At present, LED lighting main flow heat sink conception rely on thermal conductivity factor preferably material with the led chip heat substrate heat-dissipating casing that leads again that leads as early as possible.Shell and ambient air convection current realize heat radiation; For improving radiating effect, some product adopts extraordinary processing means to strengthen the shell thermal radiation capability, realizes accelerating the purpose of cooling.
Heat radiation requires easily to satisfy to small-power LED illumination lamp, but it is large to work as the led light source power consumption, and conventional heat dissipation technology is difficult to meet the demands.Except amplifying weight, by heat pipe, semiconductor refrigerating, air blast cooling, several technical combinations are arranged also.Because current programme all more or less has unsatisfactory part, the present invention proposes brand-new scheme: phase transformation pincers warm air cartridge type cooling device.This programme both can be used as LED light fixture building block based on physical principle, also can be applied to the occasion that other field need to be cooled off.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of rational in infrastructure, technical maturity, satisfy high-power/high power density thermal source such as the cooling of led light source parts requires, not only safe and reliable but also with low cost, the cooling heat radiator that makes things convenient for the apolegamy of LED lighting.This device is applicable to the large wattage LED light fixture of light source straight-down negative irradiation, such as factories and miness pendent lamp, Square Lamp, auditorium lamp etc.Use for non-straight-down negative, structure hereinafter described can be changed a little, its basic principle is constant, and the technical finesse means are consistent.
Heat dissipation metal is good, is easy to machine-shaping, is suitable for making radiator, especially with aluminium alloy for the most common.The common manufacturing process of aluminium alloy heat radiator is die cast and extruded aluminium section machine-shaping.Hereinafter in the narration of the present invention, employing is not to be limited to heronsbill aluminium alloy extrusions processing heat radiator.Compare with heat dissipation technology scheme commonly used, the technical program improvements are: [1] relies on huge phase-change energy at heronsbill internal cavities perfusion cooling liquid, and target is cooled off; [2] according to the chimney draught principle, at the outer parcel/nested wind cylinder type insulation crust of heronsbill aluminium section bar, electricity consumption is safety both, can force again air to arrive heronsbill fin bottom from shirt rim, air duct bottom air admission hole, upwards flow through surperficial between fin, give full play to heronsbill fin surface area greatly, just with air excess Heat Exchange Characteristic, realize the best radiating effect of air blast cooling/accurate air blast cooling.
A kind of phase transformation pincers warm air cartridge type cooling device is characterized in that: perfusion fluid in metal heat sink such as heronsbill aluminium section bar hollow sealing chamber, in the metal heat sink outside chimney draught formula insulation cover---air duct is installed.
Described liquid is cooling liquid, and first-selected light water is drawn materials convenient with low cost.For reducing its condensation temperature, can suitably mix antifreeze reagent, such as methyl alcohol, ethanol or other.Cooling fluid also can be selected other liquid and the solution thereof such as methyl alcohol, ether, and evaporation point is low, need not harsh condition of negative pressure, easily realizes on the technique.
A kind of phase transformation pincers warm air cartridge type cooling device is characterized in that: described liquid main component preferred water, can mix an amount of antifreezing agent by reducing the condensation point Temperature Setting; Other also can be selected such as methyl alcohol or ethanol.
Consist of phase transformation pincers warm air cartridge type cooling device critical piece and have three: [1] hollow type metal heat sink is heronsbill aluminium section bar [2] the rigidity conductive sole plate that can install/mount the led light source plate for example, this base plate extends the appropriate bending of expansion, can change the led light source plate direction of illumination that is mounted thereon, be fit to non-straight lower irradiation and use [3] sealing loam cake.
The heronsbill hollow sealing chamber sealing loam cake of phase transformation pincers warm air cartridge type cooling device is rigidity, is shaped as plate or upper convex, and air exhaust nozzle is installed.Air exhaust nozzle can similar various tyre valves and the form such as steel ball sealing valve, the permanent closure of also can once bleeding.Coolant is few in the annular seal space, and cooling fluid can cover effectively that the rigidity conductive sole plate gets final product in the annular seal space during work.Used cooling fluid preferred water can be mixed methyl alcohol, ethanol etc., and is not only antifreeze but also reduce vapourizing temperature; Also can be directly with low evaporation point liquid and solution.To be pumped into negative pressure in the annular seal space, as be initially atmospheric pressure 1/10th, water base cooling fluid approximately 50 ℃ just begin vaporization and 5224 times of heats of quantity of fluid such as carry and leave.Along with vaporizing liquid, negative pressure weakens gradually in the annular seal space, and vapourizing temperature point raises gradually; The steam release heat is taken away rapidly by radiator simultaneously, steam liquefaction refluxes in the radiator cavity bottom again after the heat exchange, the circulation that goes round and begins again replenishes the cooling liquid that vaporization is escaped, reach dynamic equilibrium and realize ' pincers temperature ' effect: cooled object such as led light source plate are clamped at specific vapourizing temperature point, reach the effect of ' clamping down on ' cooled object ' temperature '.This programme key physical principle is ' phase-change energy ': phase transition energy is thousands of times of specific heat of liquid capacity, is 5224 times to water!
A kind of phase transformation pincers warm air cartridge type cooling device is characterized in that: metal heat sink inner bag annular seal space upper end install plate or on convex rigid seal loam cake; Seal an amount of Phase cooling liquid of intra-bladder instillation, and according to the vapourizing temperature parameter annular seal space is pumped into required negative pressure.
Implement the technical program, must consider to consist of the ability that each parts of annular seal space bear negative pressure, on selection and manufacturing process, must fully prove, determine rational technical indicator.
Be used for realizing the liquid of Phase cooling, except water base cooling fluid, can also choose organic solvents such as isopentane (27.9 ℃), ether (34.6 ℃), pentane (36.1 ℃), acetone (56.2 ℃), methyl alcohol (64.9 ℃), pentane in heptan (68.9 ℃) and make cooling fluid, though cost is high, but it is not harsh that negative pressure requires, and technique is easy to realize.Some materials are poisonous, use to be noted that the incorporation engineering practice, and with energy-conservation being as the criterion of safety and environmental protection high-quality Cheap highly effective, detail is not repeated herein.
Another innovation of the technical program is: the air duct that steering current is installed outside metal heat sink such as heronsbill aluminium section bar, force the planning thermal field to optimize heat dissipation channel, forcing peripheral cold air to enter air duct along setting path flows, fully contact the High Efficiency Thermal exchange with heronsbill radiating fin surface, take away the entrained heat of heronsbill aluminium section bar.In fact, air duct is exactly ' exhausting chimney ' or title ' fire poking barrel ', utilize the metal heat sink transferring heat to add hot-air and make its volumetric expansion, at the inner ascending air that forms of air duct, air-flow produces draft, form negative pressure in air duct bottom and force ambient air to reserve air gap from shirt rim, air duct bottom to enter continually air duct, walk heat along the heronsbill spreader surface fluxion strap that makes progress again.Air velocity and air duct sectional area are inversely proportional to, and along with air duct top bore tightens up gradually, the expanded by heating air forms the rate of climb of air-flow and accelerates gradually, and kinetic energy increases gradually, and inertia strengthens thereupon, and the exhausting effect is more obvious.The energy that ascending air obtains is finally from object such as the led light source chip of being cooled, and when chip temperature raise, the ascending air temperature also uprised, and heat energy increases flowing velocity and accelerates, and the heat of taking away just increases, thereby the containment chip temperature further rises; Otherwise when the led chip drop in temperature, ascending air speed is slowed down, and takes away heat and reduces.As a result very naturally between led chip temperature and exhausting air velocity, reach dynamic equilibrium, have typical self adaptation temperature control effect.During outdoor utility, consider the factors such as wind and frost sleet dirt acid poison, should do safeguard procedures, comprise that the air outlet place adds a cover rain cover or changes air outlet moulding etc.Accurately design and the accurate Wind cylinder structure of making can adapt to the object power that is cooled and change, and peace and quiet guarantee to be cooled object such as led light source plate operating temperature for a long time within safe range.
Because the ascending air energy is the basic of air-flow inertia and air duct draft, therefore for ensureing ascending air exhausting effect, must reduce its energy deadweight loss, reduces it and dissipates in the air duct self-energy as far as possible.Accomplish this point, except will note making air-flow not produce at the Wind cylinder structure design aspect or few turbulization as far as possible, one of method is to install additional outside the upper convex ' cover confluxes ' that shape such as circular pagoda top upwards tightens up gradually at sealing loam cake place, when selecting the air duct manufactured materials, should select the large heat-barrier material of thermal resistance, reduce the air-flow thermal losses, preferred material is plastics.Plastics are easy to machine-shaping, and are with low cost, possess simultaneously insulation characterisitic, also have rich colors concurrently, are beneficial to marketing.For safety, should add fire retardant in the raw material during injection moulding of air duct parts, guaranteeing can breaking out of fire danger.Addition thereto also can be taked in the structural design aspect, as adopting the sandwich effect of heat insulation better.
A kind of phase transformation pincers warm air cartridge type cooling device is characterized in that: install the upper convex that upwards tightens up gradually in shape such as the circular pagoda top cover that confluxes at sealing loam cake place additional, or the rigid seal loam cake is directly made above-mentioned shape.
Stronger for the air duct exhausting, radiating effect is better, just must increase the length of air duct exhaust column, makes air-flow obtain more kinetic energy and inertia.But the long inconvenience packing of air duct and transportation.Solution is: adopts the ring set structure with its cavity ring that is decomposed into the similar truncated conical shape of multistage, encircles in the big ring sleeve, and the little ring of middle ring sleeve, the less ring of cyclotella sleeve, so the ring ring shrinks and is nested, and reduces packaging volume.During use from minimum ring is upwards carried the formation air duct, assembly unit is finished in layer by layer buckle locking again, each encircles the platform tapering and matches, closely nested guarantee to seal air tight.The design reference example is a kind of plastic travelling cup, gos out and presses ' flat ' when carrying, and upwards one draws ' change ' to become cup during use, and each encircles the platform tapered configuration and guarantees that cup is firmly water-tight.For making nested good whole air duct safety firmly, can encircle the nested interface place at each and reserve the snap close position, utilize elasticity of plastics deformation screens to pin no longer positioning.Also can adopt the screw thread turn-knob that the fastening mode is installed.Under the pendent lamp applicable cases, can be installed in air duct upper end minimum ring to suspension hook and put, utilize light fixture gravity just can guarantee that air duct can ' not fall apart ', need not snap close and also can ensure air duct safety, and lifting is simpler.
A kind of phase transformation pincers warm air cartridge type cooling device, it is characterized in that: described air duct is an integral body, and sectional manufacturing, ring ring are nested, integral installation, and the ring set number is N, N 〉=1, the ring set interface can stay snap close or screw thread spinner.
A kind of phase transformation pincers warm air cartridge type cooling device, it is characterized in that: described air duct is funnel-shaped suction tube structure, adopts the manufacturing of insulation heat-barrier material, preferred material is the ABS engineering plastics; Add fire retardant for well.
In some lighting application scenarios, when being not suitable for too high suction tube is installed, can be in air duct outlet or its inner installation mini-fan air blast cooling.Electric fan increases power consumption, but can ensure led light source plate safe working temperature, and is because selected mini-fan power consumption is very little, tens thousand of hours life-span, not too large on the whole light efficiency of LED lighting and impact in service life.
A kind of phase transformation pincers warm air cartridge type cooling device, it is characterized in that: the mini-fan air blast cooling is installed in the described air duct or its air outlet place.
Be not honest downward application for the light source irradiation direction, capable of regulating led light source plate normal direction, expansion rigidity conductive sole plate and suitably distortion can change part-structure like this but design principle is constant in order to keep good heat conduction with the led light source plate.
Key point of the present invention and superior point are:
1. vaporizing liquid phase transformation pincers temperature is one of key point, also is one of superior point
1.1. utilize thousands of times of the phase-change energies of cooling fluid vaporization to the principle of specific heat of liquid capacity, clamp down on be cooled object such as led light source plate and work in lower temperature, guarantee its safe and reliable long-life operation.
1.2. use liquid few, lightweight.
1.3. applicable to high-power/ultrahigh-power LED illuminating lamp.
2. the overcoat suction tube is one of key point, also is one of superior point
2.1. the Wind cylinder structure forcibly changing cooling device internal heat passage distribute, optimized the cooling blast path, make its with the metal heat sink fin between effective contact area greatly increase, fully improved heat exchanger effectiveness, improved cooling effect.
2.2. the sleeve structure that suction tube ring ring shrinks helps and reduces packaging volume and freight, is conducive to reduce overall cost.
2.3. the natural air exhaust structure changes harmful to treasure the LED heat, and has self adaptation exhausting cooling effect, noiseless, and ' strike ' is not safe and reliable, and be with low cost.
2.4. install the application of mini-fan additional, be adapted at installing and using the harsh occasion of space requirement.Advantage is good cooling results, compact conformation, and shortcoming: increase energy consumption and crash rate, audio-frequency noise is arranged, parameter and type selecting appropriately can reduce defective.
[description of drawings]
Following accompanying drawing is not project blue print, dimensioning not, and the part parts that the scheme of introduction does not relate to omit in the drawings.
Fig. 1 is phase transformation pincers warm air cartridge type cooling device main parts size side-looking scheme of erection of the present invention.Number in the figure 1 is air duct; The 2nd, air exhaust nozzle; The 3rd, double as the rigid seal loam cake that radome fairing is used; The 4th, the heronsbill aluminium alloy heat radiator; The 5th, the rigidity conductive sole plate that can install/mount the led light source plate; The 6th, snap ring is installed; The 7th, the lamp affixed to the ceiling decoration panel.
Fig. 2 is the example schematic that apparatus of the present invention are used for the LED lamp affixed to the ceiling.
Fig. 3 adopts air duct multistage ring set structure, that nested groups is dressed up, its air inlet slit, shirt rim, maximum loop bottom jag, and releasing process when being convenient to injection molding is raised the efficiency.
Fig. 4 is the sectional view of Fig. 2, and label 8 is air ducts; The 9th, gas channel in the air duct; The 10th, the rigid seal loam cake; The 11st, the negative-pressure sealing chamber; The 12nd, the heronsbill aluminum profile heat radiator; The 13rd, rigidity conductive sole plate/led light source plate place phase-change liquid accumulates the place.
Fig. 5 is the high-power LED ceiling lamp that adopts this device negative pressure liquid Phase cooling+natural air exhaust cooling, and brightness is high energy-conservation obvious.
[specific embodiment]
Embodiment one, with the 15W track LED lamp of Miniature electric fan air blast cooling
The present embodiment 15W track LED lamp is equipped with this device.Annular seal space is marked with the 2% methanol solvate aqueous solution and is used for Phase cooling.Because installing space often is exposed in the visual line of sight, the light fixture appearance and modeling is required harshness, long exhaust column is used in inconvenience, airduct is shorter, built-in miniature electric fan technical scheme therefore select.Figure slightly.
Embodiment two, negative pressure phase transformation clamp warm exhausting natural cooling type LED lamp affixed to the ceiling
The present embodiment such as Fig. 2, shown in Figure 4, initial negative pressure 10kPa, 2% methanol aqueous solution, heronsbill height 50mm is according to the suction tube accessory of LED power consumption selection differing heights, LED power consumption range: 15～100W.
The high-power high-altitude of embodiment three, LED pendent lamp
The high-power high-altitude of this LED pendent lamp is selected the natural air exhaust scheme of this device, light source power scope 50～200W and above high-power, super-high-power LED light source, particularly integrated led light source.This device provides the led light source refrigerating function, and is lightweight, quiet reliable.
Claims (7)
1. a phase transformation pincers warm air cartridge type cooling device is characterized in that: at metal heat sink hollow sealing intra-bladder instillation liquid, in the metal heat sink outside chimney draught formula insulation cover---air duct is installed.
2. a kind of phase transformation according to claim 1 clamps warm air cartridge type cooling device, it is characterized in that: described liquid main component preferred water, can mix an amount of antifreezing agent by reducing the condensation point Temperature Setting.
3. a kind of phase transformation pincers warm air cartridge type cooling device according to claim 1 is characterized in that: metal heat sink inner bag annular seal space upper end install plate or on convex rigid seal loam cake; Seal an amount of Phase cooling liquid of intra-bladder instillation, and according to the vapourizing temperature parameter annular seal space is pumped into required negative pressure.
4. a kind of phase transformation pincers warm air cartridge type cooling device according to claim 1 is characterized in that: install the upper convex that upwards tightens up gradually in shape such as the circular pagoda top cover that confluxes at sealing loam cake place additional, or the rigid seal loam cake is directly made above-mentioned shape.
5. a kind of phase transformation according to claim 1 clamps warm air cartridge type cooling device, and it is characterized in that: described air duct is an integral body, and sectional manufacturing, ring ring are nested, integral installation, and the ring set number is N, N 〉=1, and the ring set interface can stay snap close or screw thread spinner.
6. a kind of phase transformation according to claim 1 clamps warm air cartridge type cooling device, and it is characterized in that: described air duct is funnel-shaped suction tube structure, adopts the manufacturing of insulation heat-barrier material.
7. a kind of phase transformation pincers warm air cartridge type cooling device according to claim 1 is characterized in that: in the described air duct or its air outlet place provided with fan air blast cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203466298U CN202835276U (en) | 2012-07-17 | 2012-07-17 | Phase change suppressing temperature air duct type cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203466298U CN202835276U (en) | 2012-07-17 | 2012-07-17 | Phase change suppressing temperature air duct type cooling device |
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| CN202835276U true CN202835276U (en) | 2013-03-27 |
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| CN2012203466298U Expired - Fee Related CN202835276U (en) | 2012-07-17 | 2012-07-17 | Phase change suppressing temperature air duct type cooling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818239A (en) * | 2012-07-17 | 2012-12-12 | 吕大明 | Phase-change temperature-suppressed wind-cylinder type cooling apparatus |
| US20160066374A1 (en) * | 2014-08-28 | 2016-03-03 | Peter Shen | High-power retrofit led lamp with active and intelligent cooling system for replacement of metal halid lamp and high-pressure sodiam lamp |
-
2012
- 2012-07-17 CN CN2012203466298U patent/CN202835276U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818239A (en) * | 2012-07-17 | 2012-12-12 | 吕大明 | Phase-change temperature-suppressed wind-cylinder type cooling apparatus |
| US20160066374A1 (en) * | 2014-08-28 | 2016-03-03 | Peter Shen | High-power retrofit led lamp with active and intelligent cooling system for replacement of metal halid lamp and high-pressure sodiam lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Wenzhuo Green Environmental Protection Technology Co.,Ltd. Assignor: Lv Daming Contract record no.: 2013440020433 Denomination of utility model: Phase-change temperature-suppressed wind-cylinder type cooling apparatus Granted publication date: 20130327 License type: Exclusive License Record date: 20131230 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Wenzhuo Green Environmental Protection Technology Co.,Ltd. Assignor: Lv Daming Contract record no.: 2013440020433 Denomination of utility model: Phase-change temperature-suppressed wind-cylinder type cooling apparatus Granted publication date: 20130327 License type: Exclusive License Record date: 20131230 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150717 |
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| EXPY | Termination of patent right or utility model |