Cov ntsiab lus tseem ceeb hauvLED Teeb pom kev tshav kub dissipationTsim
Taw qhia: Vim li cas Kev Tswj Kub Kub yog qhov tseem ceeb rau LEDs
LEDs muaj txiaj ntsig ntau dua li cov teeb pom kev zoo ib txwm muaj, tab sis lawv tseem ua kom muaj cua sov- thiab cov cua kub ntau dhau yog lawv tus yeeb ncuab #1. Yog tsis muaj kev tswj xyuas thermal zoo, LED kev ua tau zoo degrades sai:
✔ Lumen tso zis poob(txog 30% poob ntawm qhov kub siab)
✔ Xim hloov(tshwj xeeb tshaj yog nyob rau hauv dawb LEDs)
✔ Lifespan shortens(50,000 teev → 20,000 teev)
Kab lus no tshawb txog qhovengineering hauv paus ntsiab lus qab LED tshav kub dissipation, npog:
✔ Thaum tshav kub kub tsim mechanisms nyob rau hauv LEDs
✔ Core heat dissipation tswv yim
✔ Cov ntaub ntawv tshawb fawb
✔ Tiag -cov ntaub ntawv tshawb fawb thoob ntiaj teb
✔ Yav tom ntej cua txias tshuab
1. Thaum tshav kub kub li cas nyob rau hauv LEDs
Tsis zoo li cov qhov muag tsis pom kev (uas radiate tshav kub sab nraud), LEDs ua kom sovnyob rau hauv lub semiconductor junction:
| Thaum tshav kub kub | Kev pab | Kev cuam tshuam |
|---|---|---|
| Kev sib tshuam kub | 60-70% ntawm tag nrho | Ncaj qha cuam tshuam LED chips |
| Tsav Tsheb Kub | 20-30% | cuam tshuam cov khoom siv hluav taws xob |
| Optical Losses | 10% | Lens / reflector absorption |
Kev nkag siab tseem ceeb:Txawm tias "siab-efficiency" LEDs hloov xwb~ 50% ntawm hluav taws xob rau lub teeb-qhov seem ua kom sov.
2. Cov tswv yim ua kom sov ua kom sov
(1) Thermal conduction: Kub dab dej tsim
Khoom siv:
| Khoom siv | Thermal conductivity (W / mK) | Siv Case |
|---|---|---|
| Aluminium | 160-200 | Feem ntau (tus nqi-zoo) |
| Tooj | 400 | High -kawg fixtures (zoo dua tab sis hnyav dua) |
| Graphite | 1500 (hauv- dav hlau) | Ultra- lub teeb nyias (piv txwv li, vaj huam sib luag tiaj) |
Tswv yim tsim:
✔ Fin ntom- Ntau cov fins=thaj tsam ntau dua tab sis siab dua airflow
✔ Base thickness- Thicker bases kis tau kub ceev (min{0}}mm rau 50W + LEDs)
Case Study:
Cree covCXB SeriesLEDs sivtooj liab -core MCPCBskhaws junctions<85°C at full load.
(2) Convection: Passive vs. Active Txias
| Hom | Mechanism | Zoo tshaj rau |
|---|---|---|
| Passive | Natural airflow (kub dab dej) | Tsawg- zog (<20W) residential lights |
| Active | Ntxuam / kua txias | Siab - lub zog ntau ntau lub chaw ua haujlwm / teeb pom kev lag luam |
Piv txwv:
Philips 'ActiveCooltechnology sivmicro-cov kiv cuakom txias 300W + LED arrays ntsiag to.
(3) Radiation: Kev kho deg
Anodized aluminium(dub) radiates tshav kub 20% zoo dua li raw hlau.
Ceramic txheej(xws li Al₂O₃) txhim kho IR emission.
3. Txiav - Ntug Cov Khoom Siv & Tshuab
(1) Theem -Change Materials (PCMs)
Absorb cua sov thaum melting (xws li, paraffin siv quav ciab nyob rau hauv kaw chambers)
Siv hauvNASA- tau tshoov siabLED txoj kev teeb (tso tseg<60°C in desert heat)
(2) Vapor Chambers
Nyias, tiaj tus kav cua sov uas kis tau cua sov 5x sai dua li cov hlau
Siv rau hauvLG's UltraFine LED zaub
(3) Graphene Thaum tshav kub kub Spreaders
97% thermal conductivity ntawm pob zeb diamond ntawm 1/10th tus nqi
Lumileds 'LUXEON LEDsintegrate graphene txheej
4. Tiag tiag -Lub Ntiaj Teb Failure & Success Cases
Failure: Tsis zoo tsim Downlight
Qhov teeb meem:Tsis muaj cua sov dab dej + kaw qhov rooj → Kev sib tshuam temps ntaus 120 degree
Qhov tshwm sim:50% lumen poob hauv 6 lub hlis
Kev vam meej: Osram's Horticultural LED
Kev daws:Aluminium fins + yuam cua txias
Qhov tshwm sim:Cov zis ruaj khov ntawm 60℃rau 50, 000+ teev
5. Yav tom ntej Trends nyob rau hauv LED txias
Microfluidic Cooling- Cov dej txias me me hauv LED modules (DARPA-them nyiaj txiag)
Thermoelectric cua txias- Peltier pab kiag li lawm rau precision temp tswj
AI-Optimized Heat Sinks- Algorithm-tsim cov duab (piv txwv li, cov qauv lattice)
Xaus: Qhov Zoo Tshaj Plaws rau Kev Tsim Kho Thermal
Pib nrog MCPCBs zoo(2-txheej tooj liab yam tsawg kawg nkaus)
Ua kom sov lub dab dej loj rau lub zog(10 cm² / W rau passive txias)
Test nyob rau hauv tiag enclosures(tsis yog qhib -air!)
Saib xyuas qhov sib txuas temps(Tj<105°C for long life)
Kev xav zaum kawg:Qhov zoo tshaj plaws LED fixture tsuas yog zoo li nws qhov tsis muaj zog thermal txuas. Raws li lub adage mus:"Tsim rau lub teeb, tab sis engineer rau cua sov."
Shenzhen Benwei Teeb pom kev zoo Technology Co., Ltd
📞 Tel/Whatsappc +86 19972563753
🌐 https://www.benweilight.com/
📍 F Building, Yuanfen Industrial Zone, Longhua, Shenzhen, Suav
