Thaum tshav kub kub Dissipation Structure tsim rau LED teeb: Common Solutions and Innovations
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1. Passive Heat Dissipation Methods 2. Cov kev ua kom txias txias 3. Hybrid & Advanced Cooling Techniques 4. Tsim cov tswv yim ua kom zoo |
Taw qhia
Thaum tshav kub kub dissipation yog ib qho tseem ceeb ntawm LED teeb pom kev zoo, lub neej ntev, thiab efficiency. Cov cua kub ntau dhau ua rau lub teeb lwj, txo cov luminous efficiency, thiab tuaj yeem ua rau tsis ua hauj lwm ntxov. Kev tswj xyuas thermal ua haujlwm kom ruaj khov thiab ua kom lub neej ntev ntev ntawm LED. Kab lus no tshawb txog cov kev daws teeb meem ntawm cov cua sov, lawv cov txheej txheem, thiab kev tsim kho tshiab hauv LED txias tshuab.
1. Passive Heat Dissipation Methods
Passive txias cia siab rau tej yam ntuj tso conduction, convection, thiab hluav taws xob tsis muaj qhov txav. Nws yog dav siv vim nws txoj kev ntseeg siab thiab kev saib xyuas qis.
1.1. Hlau Heat Sinks
Aluminium(feem ntau yog vim muaj thermal conductivity ~ 200 W / m·K thiab tus nqi-kev ua tau zoo)
Tooj(zoo dua conductivity ~ 400 W / m·K tab sis hnyav dua thiab kim dua)
Cov ntaub ntawv sib xyaw(piv txwv li, txhuas nrog graphite txheej rau kev txhim kho cua sov)
Kev txiav txim siab tsim:
Fin ntom & puab- Ua kom zoo rau thaj chaw saum npoo av thiab huab cua ntws
Anodized txheej- Txhim kho corrosion kuj thiab emissivity
Piv txwv:
Lub 50W LED txoj kev teeb siv lub extruded aluminium kub dab dej txo qhov kub thiab txias los ntawm15-20 ° Cpiv rau qhov tsis yog -kev tsim kho kom zoo.
1.2. Thermal Interface Materials (TIMs)
Thermal paste / roj(Fill microscopic khoob ntawm LED module thiab lub dab dej kub)
Theem -cov ntaub ntawv hloov pauv (PCMs)(piv txwv li, 3M ™ thermally conductive ncoo)
Graphite ntawv(lub teeb yuag, siab conductivity rau compact designs)
Kev sib piv kev ua haujlwm:
| TIM Type | Thermal conductivity (W / m · K) | Daim ntawv thov |
|---|---|---|
| Silicone muab tshuaj txhuam | 1-5 | General -lub hom phiaj |
| Hlau -Raws li Paste | 5-15 | High -lub zog LEDs |
| Graphite Ntawv | 300 -1500 (hauv dav hlau) | Qhov chaw - txwv tsis pub tsim |
2. Cov kev ua kom txias txias
Active cooling uses forced airflow or liquid cooling for high-power LEDs (>100W).
2.1. Ntxuam- Pab Txias
Axial kiv cua(feem ntau nyob rau hauv siab -bay thiab chaw ntau pob teeb pom kev zoo)
Blower kiv cua(zoo dua rau cov kev taw qhia airflow hauv cov khoom sib txuas)
Pros & Cons:
✔ Siv tau rau cov khoom siv hluav taws xob siab
✖ Ntxiv zog noj & suab nrov
Case Study:
200W LED loj hlob teeb nrog adual{0}} kiv cua systemtswj qhov kub thiab txias hauv qab no85 degree, extending lifespan los ntawm30%piv rau passive txias.
2.2. Ua kua txias
Microchannel cua sov kav(siv nyob rau hauv automotive LED headlights)
Dej- cua txias(rau ultra- siab- zog muaj LEDs)
Piv txwv:
Osramkua-cooled LED modulesua tiav<10°C/W thermal resistance, pab50, 000+ teevntawm kev ua haujlwm tsis tu ncua.
3. Hybrid & Advanced Cooling Techniques
3.1. Cov kav dej kub
Tooj tooj cua sov kavHloov cov cua sov kom zoo ntawm theem hloov (evaporation-condensation voj voog).
Siv hauv:High -lub teeb tsom teeb, lub teeb pom kev zoo, thiab cov tsheb LEDs.
Kev ua tau zoo:Txo thermal kuj los ntawm40-60%piv rau cov tsoos cua sov.
3.2. Thermoelectric cua txias (Peltier)
Khoom- lub xeev txias(tsis muaj qhov txav mus los)
Siv nyob rau hauv precision teeb pom kev zoo(kev kho mob, microscopy)
Kev txwv:Kev siv hluav taws xob ntau (~ 20% lub zog ntxiv).
3.3. 3D-Printed Heat Sinks
Kev cai lattice qauvtxhim kho airflow thiab hnyav efficiency.
Piv txwv:GE covadditively manufactured cua sov dab dejtxo qhov hnyav los ntawm30%thaum tswj kev ua haujlwm txias.
4. Tsim cov tswv yim ua kom zoo
4.1. PCB Thermal Management
Hlau Core PCBs (MCPCBs)- Aluminium los yog tooj liab substrates kom zoo dua tshav kub kis.
Insulated Hlau Substrates (IMS)- Siv nyob rau hauv siab - zog LED arrays.
4.2. Computational Fluid Dynamics (CFD) Simulation
Predicts airflow thiab cua sov faib ua ntej kev tsim khoom.
Piv txwv:Cree siv CFD los ua kom zooXLamp LED arraysrau uniform txias.
4.3. Modular Heat Sink Designs
Hloov tau txias modulesrau kev kho kom yooj yim.
Xaus
Qhov zoo ntawm LED tshav kub dissipation nyob ntawm:
Kev xaiv khoom(aluminium / tooj liab kub dab dej, TIMs siab heev)
Txoj kev txias(passive rau qis- zog, nquag / hybrid rau siab - zog)
Tsim optimization(CFD, qauv qauv, 3D luam ntawv)
Yav tom ntej Trends:
Graphene- ua kom cov cua sov ua kom zoo dua(siab dua conductivity)
AI-tsav kev tswj xyuas thermal(Dynamic cooling adjustment)
Lub Zog: 18-40W
.Back-lit&Side-lit
.Size: 295x295mm, 30mm thickness
Cov tswv yim voltage: AC 200-240V
Xim kub: 3000K, 4000K, 5000K, 6000K
luminous efficiency: 110lm / w, 130lm / w, 150lm / w
Beam kaum sab xis: 120 degree
.PF>0.95, CRI: 80-83
Khoom siv: Aluminium + PC npog & Aluminium + PMMA
.Lifespan: 50000 teev
.Warranty: 5 xyoo
. dawb ncej
.10pcs ib lub thawv tag nrho
. 2835 LED nti, Epistar
. Philips LED tsav tsheb
