Dab tsi yog qhov Kub Sink hauv LED?

 

Yog tias koj tau siv txhua lub sijhawm nyob ib puag ncig cov khoom siv teeb pom kev zoo LED, koj tau pom lawv. Cov ribbed, finned hlau lug txuas rau tom qab ntawm siab -bay fixtures, downlights, los yog automotive headlamps. Cov neeg feem coob saib lawv thiab xav tias, qhov ntawd tsuas yog ib daim ntawm txhuas los ua kom muaj kev lag luam.

 

 

Lawv tsis yog qhov tsis ncaj ncees lawm ntawm txhuas feem. Tab sis hu rau lub dab dej kub "tsuas yog ib daim hlau finned" yog me ntsis zoo li hu rau lub cav sib tw "tsuas yog ib pawg ntawm cov hlau bolted ua ke." Technically yog, tab sis nws nco txhua yam uas tseem ceeb.

 

Yog li dab tsi yog lub dab dej kub hauv ib daim ntawv thov LED, tiag tiag?

 

Lus Txhais luv luv (thiab yog vim li cas nws poob luv)

Lub dab dej kub yog ib qho kev tswj xyuas thermal uas tsim los nqus cov cua sov los ntawm LED lossis LED array thiab dissipate nws mus rau hauv ib puag ncig huab cua. Qhov ntawd yog phau ntawv teb.

 

Tab sis yog tias koj tab tom nrhiav cov khoom siv no rau cov khoom lag luam uas xav tau los ua - teeb pom kev lag luam, tshuab tsheb, khoom siv kho mob, khoom siv hauv tsev- txhais tau tias tsis pab koj ntau. Nws tsis qhia koj tias vim li cas qee qhov cua sov ua haujlwm thiab lwm qhov ua rau thaj chaw tsis ua haujlwm. Nws tsis piav qhia yog vim li cas ob lub dab dej kub uas zoo ib yam tuaj yeem ua tau txawv txav.

 

Yog li cia peb mus tob me ntsis.

 

Dab tsi yog lub rhaub dej kub tiag tiag hauv lub teeb ci LED

Ib qho LED hloov hluav taws xob rau hauv lub teeb. Qhov uas sawv daws nco ntsoov. Ib feem uas tawm mus yog qhov LED kuj hloov ib feem tseem ceeb ntawm cov hluav taws xob mus rau hauv tshav kub. Ntawm qhov sib tshuam - qhov taw tes me me hauv LED qhov twg lub teeb tsim tawm - qhov kub thiab txias tuaj yeem nce nrawm. Sab laug unchecked, uas kub ua rau lub LED puas. Lub teeb tso zis poob. Xim hloov. Lifespan shortens.

 

Lub dab dej kub yog nyob nruab nrab ntawm LED thiab ib puag ncig. Nws txoj haujlwm yog rub cov cua sov kom deb ntawm qhov sib txuas, nthuav tawm, thiab tso tawm rau saum huab cua. Nws yog qhov tseem ceeb ntawm tus choj thermal.

 

Tab sis ntawm no yog qhov nuance uas tseem ceeb: ** lub dab dej kub tsis yog ib daim hlau xwb. Nws yog ib tug ua tib zoo engineered system.

 

Thermal conductivity yog lub hauv paus

Aluminium dominates qhov chaw no rau qhov laj thawj zoo. Nws muaj cov thermal conductivity nyob rau hauv thaj tsam ntawm 150 txog 200 W / m·K nyob ntawm cov alloy . 6063 yog ib qho rau extrusion. 6061 tshwm sim thaum machining koom nrog. Copper ua tau zoo dua-nyob ib ncig ntawm 400 W/m·K-tab sis nws hnyav dua, kim dua, thiab feem ntau overkill rau LED daim ntawv thov tshwj tsis yog tias koj tab tom cuam tshuam nrog lub zog loj heev.

 

Kev xaiv ntawm cov khoom cuam tshuam ntau dua li kev ua haujlwm thermal xwb. Nws cuam tshuam qhov hnyav, tus nqi, kev tsim khoom, thiab txawm tias qhov kawg tshwm sim tom qab kho qhov chaw.

 

Qhov Chaw Ntog Yog Qhov Ua Haujlwm tiag tiag

Lub dab dej kub ua haujlwm los ntawm kev muab cua sov ntau qhov chaw kom dim ntawm. Qhov ntawd yog qhov fins yog rau. Tab sis tsuas yog ntxiv fins tsis tuaj yeem ua kom lub dab dej kub zoo dua. Fin density, fin height, and fin orientation all affect how air moves across the surfaces.

 

Hauv kev ua kom txias txias-uas yog qhov kev siv LED feem ntau siv -natural convection cia siab rau huab cua sov nce thiab rub cua txias hauv qab. Yog hais tias cov fins tau ntim nruj heev, airflow khw. Lub dab dej kub zoo li zoo nkauj tab sis ua haujlwm tsis zoo. Tau txais qhov geometry txoj cai yuav tsum tau ua qauv thermal tiag tiag, tsis yog kev kwv yees xwb.

 

Lub interface yog qhov twg yam mus yuam kev

Qhov no yog ib feem uas tau overlooked ntau dua li nws yuav tsum tau. Lub dab dej kub tsuas ua haujlwm yog tias cov cua sov tuaj yeem tau txais los ntawm LED mus rau hauv lub dab dej. Qhov ntawd txhais tau tias:

- Lub tiaj tiaj, du mounting nto
- Zoo mounting siab
- Cov khoom siv thermal interface-thermal paste, ncoo, lossis theem-hloov cov ntaub ntawv- txhawm rau ua kom pom qhov tsis sib xws ntawm LED thiab lub dab dej kub

 

Hla ib yam ntawm cov no, thiab qhov ua tau zoo thermal tiv thaiv ob lossis peb npaug. Lub dab dej kub ua kom zoo nkauj es tsis ua haujlwm.

 

Hom cua sov dab dej koj yuav ntsib hauv daim ntawv thov LED

Tsis yog txhua lub teeb hluav taws xob LED ua tau zoo ib yam. Txoj kev tsim khoom hloov pauv qhov ua tau raws li cov duab, qhov nyuaj, thiab tus nqi.

 

 

 

Extruded Heat Sinks

Extrusion yog txoj kev siv ntau tshaj plaws rau LED kub dab dej, thiab yog vim li cas. Nws yog tus nqi -zoo ntawm qhov ntsuas, ua kom zoo ib yam profiles, thiab ua haujlwm zoo rau cov duab kab zoo li cov uas siv hauv cov teeb pom kev zoo los yog linear siab -bay fixtures. Extruded profiles tuaj yeem txiav kom ntev thiab machined rau mounting nta. Qhov kev txwv tseem ceeb yog qhov extrusion tsim ib qhov profile tas li -koj tsis tuaj yeem hloov tus qauv fin raws qhov ntev.

 

Skived thiab Bonded -Fin Heat Sinks

When a design calls for higher fin density or different fin orientations than extrusion can achieve, skived or bonded-fin construction comes into play. Skiving txiav nyias fins los ntawm cov khoom thaiv ntawm cov hlau, tsim kom muaj qhov chaw siab heev hauv cov hneev taw. Bonded-fin assemblies txuas ib tug fins mus rau lub hauv paus phaj, tso cai rau ntau complex geometry. Ob txoj kev tshwm sim nyob rau hauv siab dua - fais fab LED daim ntawv thov uas passive txias yuav tsum tau ua hauj lwm nyob rau hauv nruj qhov chaw txwv.

 

Machined Heat Sinks

Rau qis-rau- nruab nrab ntim lossis tsim qauv uas xav tau cov yam ntxwv nyuaj- cov ntsiab lus txuas txuas, kaw kaw, cov duab kev cai- cov tshuab cua sov yog cov lus teb. CNC machining tso cai rau precision nta thiab nruj kam rau ua uas extruded profiles tsis phim. Kev lag luam tawm - tawm yog tus nqi ntawm ib chav tsev, uas zoo li khiav siab dua extrusion.

 

Tuag-Cast Heat Sinks

Tuag casting muab cov duab nyuaj ntawm cov ntim siab nrog kev ua haujlwm zoo thermal. Nws yog ib txwm muaj nyob rau hauv cov neeg siv khoom- qib LED cov khoom uas qhov kev zoo nkauj thiab kev sib koom ua ke muaj teeb meem ntau npaum li kev ua haujlwm thermal. Lub downside yog siab dua upfront tooling nqi thiab me ntsis thermal conductivity piv rau wrought aluminium.

 

 

Dab tsi ua kom sov lub dab dej rau koj daim ntawv thov LED

Yog tias koj tab tom teev cov dab dej kub rau cov khoom lag luam, tsis muaj kev xaiv "zoo tshaj plaws". Lub dab dej kom sov yog nyob ntawm ib txhais tes ntawm yam uas tshwj xeeb rau koj daim ntawv thov.

 

- Lub zog ceev:Ib qho 10-watt LED array nyob rau hauv qhov chaw zoo-ventilated yog ib qho teeb meem sib txawv dua li 200-watt COB nyob rau hauv ib qho chaw kaw.
- ambient tej yam kev mob:Lub dab dej kub uas ua haujlwm ntawm 25℃chav tsev kub yuav ua tsis tau ntawm 50℃hauv ib lub thawv kaw.
- Qhov chaw txwv:Qee lub sij hawm lub dab dej kub yuav tsum haum rau hauv ib lub hnab ntawv tshwj xeeb, uas ua rau kev lag luam tawm - tawm hauv qhov tsim fin.
- Passive vs. active:Feem ntau cov ntawv thov LED siv cov cua txias txias. Tab sis thaum airflow raug txwv los yog lub hwj chim ceev heev, yuam kom txias nrog cov kiv cua nkag mus rau hauv daim duab.
- Aesthetic Requirements:Tshwj xeeb tshaj yog nyob rau hauv architectural los yog cov neeg siv khoom-fab cov khoom, lub dab dej kub yog ib feem ntawm qhov pom kev tsim. Nws yuav tsum tau txais qhov chaw tiav zoo li anodizing lossis hmoov txheej yam tsis muaj kev cuam tshuam kev ua haujlwm.

 

Tus Nqi Tiag Tiag

Ntawm no yog qhov kev sib tham tau txais txiaj ntsig. Underspecifying lub dab dej kub tsis feem ntau ua rau tsis ua hauj lwm tam sim ntawd. Qhov nws ua rau yog * accelerated aging*. LED tseem ceeb. Nws tseem dhau qhov kev sim thawj zaug. Tab sis txhua txhua 10℃nce nyob rau hauv hlws ris kub roughly ib nrab ntawm qhov kev cia siab lifespan.

Cov khoom tsim los rau 50,000 teev ntawm 85℃tsuas yog xa 25,000 teev ntawm 95 degree. Yog tias koj muag rau cov neeg siv khoom lag luam uas xav tias 50,000-teev lifespan, qhov sib txawv tshwm sim raws li kev lees paub, kev hloov pauv, thiab kev puas tsuaj rau lub koob npe nrov.

 

Overengineering tsis yog cov lus teb ib yam nkaus. Ib lub dab dej kub ntau ntxiv ntxiv cov nqi tsis tsim nyog thiab qhov hnyav. Lub hom phiaj yog ib qho kev daws teeb meem zoo uas ua tau raws li lub hom phiaj thermal yam tsis muaj ntau dhau.

 

Dab tsi los nrhiav hauv Cov Khoom Siv Kub Kub Kub

Yog tias koj tab tom nrhiav cov dab dej kub rau cov khoom siv LED, tus neeg muag khoom tseem ceeb ntau npaum li cov khoom nws tus kheej. Tus neeg muag khoom zoo yuav:

- Nug txog koj lub hom phiaj qhov kub thiab txias thiab qhov chaw nyob ib puag ncig
- Muab cov qauv thermal los yog cov ntaub ntawv simulation, tsis yog "peb xav tias qhov no yuav ua haujlwm"
- Nkag siab txog kev sib raug zoo ntawm kev xaiv machining thiab cov txheej txheem qis qis xws li anodizing
- Muab cov kev xaiv hla extrusion, machining, thiab bonded -fin siv
- Kho lub dab dej kub ua ib feem ntawm koj cov khoom, tsis yog cov khoom siv xwb

 

 

 

NtawmZP Kub dab dej, peb tau tsim thiab tsim cov thermal daws teeb meem rau LED daim ntawv thov thoob plaws kev lag luam, kev lag luam, thiab kev lag luam tsheb. Peb ua haujlwm nrog aluminium-extruded, machined, bonded-fin- thiab peb lis txhua yam los ntawm thermal simulation mus rau nto tiav. Yog tias koj tab tom tsim cov khoom lag luam LED thiab xav kom tau txais kev tswj xyuas thermal thawj zaug, saib seb peb ua dab tsi ntawmwww.zpheatsink.com. Los sis ncav cuag ncaj qha. Peb zoo siab los tham los ntawm koj daim ntawv thov tshwj xeeb thiab pab koj txheeb xyuas qhov ua tau zoo.