Yuav ua li cas tsim lub dab dej kub rau LED
Nyob rau hauv xyoo tas los no, LED teeb pom kev zoo tau txais txiaj ntsig zoo vim nws lub zog ua haujlwm siab, lub neej ntev thiab cov txiaj ntsig ib puag ncig. Txawm li cas los xij, ib qho ntawm cov teeb meem tseem ceeb hauv kev tsim cov teeb pom kev zoo ntawm LED yog tswj cov cua sov uas tsim los ntawm LEDs. Cov cua kub ntau dhau tuaj yeem txo LED lub neej thiab kev ua haujlwm tau zoo, yog li tsim cov dab dej kub zoo rau kev siv teeb pom kev zoo LED yog qhov tseem ceeb.
Lub dab dej kub yog qhov ua kom txias txias uas pab kom tshem tawm cov cua sov kom deb ntawm LED sib dhos kom tswj tau qhov kub thiab txias. Thaum tsim ib lub dab da dej LED, muaj ntau yam tseem ceeb uas yuav tsum tau xav txog kom ntseeg tau tias cov cua sov dissipation thiab txhim khu kev qha. Hauv tsab xov xwm no, peb yuav tham txog qhov tseem ceeb ntawm cov dab dej kub tsim rau cov ntawv thov LED, tsom mus rau kev siv cov khoom siv siab heev thiab cov tswv yim tsim tshiab.
1. Nkag siab txog LED cua sov tej yam kev mob
LEDs yog cov khoom siv semiconductor uas hloov hluav taws xob hluav taws xob mus rau hauv lub teeb, tab sis kuj tsim kom muaj cua sov hauv cov txheej txheem. Lub tshav kub tsim los ntawm LED yog ncaj qha ntsig txog nws lub zog siv thiab kev ua haujlwm. Nrog rau kev nce qib ntawm cov thev naus laus zis thev naus laus zis, lub zog hluav taws xob LED tau dhau los ua neeg nyiam, thiab cov kev xav tau ntawm cov cua kub dissipation kuj tau nce siab dua.
Txhawm rau tsim kom muaj txiaj ntsig zoo ntawm LED lub dab dej kub, nws yog ib qho tseem ceeb kom nkag siab zoo txog cov yam ntxwv thermal ntawm LED siv, nrog rau qhov kub thiab txias, qhov siab tshaj plaws lub zog dissipation, thiab thermal kuj. Cov ntaub ntawv no yuav ua lub hauv paus rau kev txiav txim siab lub dab dej kub uas yuav tsum tau ua thiab tsim cov kev daws teeb meem zoo tshaj plaws.
2. Xaiv cov khoom siv hluav taws xob zoo
Kev xaiv cov khoom siv cua sov yog qhov tseem ceeb hauv kev txiav txim siab kev ua haujlwm thermal thiab tag nrho cov txiaj ntsig ntawm koj lub tshuab cua txias. Aluminium thiab tooj liab yog cov khoom siv feem ntau siv rau LED kub dab dej vim lawv cov thermal conductivity zoo heev thiab lub teeb yuag.
Aluminium yog ib qho kev xaiv nrov rau LED kub dab dej vim nws cov thermal conductivity, nqi-zoo, thiab yooj yim ntawm kev tsim khoom. Copper, ntawm qhov tod tes, muaj ntau dua thermal conductivity, ua rau nws yog ib qho kev xaiv haum rau high-power LED daim ntaub ntawv uas yuav tsum tau ntau tshaj cua sov dissipation. Tooj liab radiators kuj paub txog lawv zoo heev corrosion kuj thiab durability.
Nyob rau hauv xyoo tas los no, tau muaj kev txaus siab ntxiv rau kev siv cov khoom siv sib xyaw ua ke rau cov khoom siv hluav taws xob LED, xws li carbon nanotube-based composites thiab graphene-reinforced cov ntaub ntawv. Cov ntaub ntawv qib siab no tau txhim kho thermal conductivity thiab cov khoom siv kho tshuab, muab lub peev xwm los txhim kho cov dab dej kub thiab kev ua haujlwm zoo.
3. Txhim kho radiator tsim
Kev tsim ntawm lub dab dej kub ua lub luag haujlwm tseem ceeb hauv kev ua kom thaj chaw zoo tshaj plaws rau cov cua sov dissipation thiab txhawb nqa airflow kom tshem tawm cov cua sov. Lub geometry thiab fin qauv ntawm lub dab dej kub yog qhov tseem ceeb hauv kev txiav txim siab nws cov thermal ua haujlwm. Rau cov ntawv thov LED, finned heat sink designs feem ntau yog siv los ua kom thaj chaw saum npoo thiab txhim kho cua sov.
Tsis tas li ntawd, kev sib koom ua ke ntawm cov khoom siv thermal interface (xws li thermal pads lossis thermal paste) ntawm LED thiab lub dab dej kub yog qhov tseem ceeb rau kev txo qis thermal tsis kam thiab ua kom muaj cua sov hloov tau zoo. Kev txhim kho kom zoo ntawm LED mus rau lub dab dej kub yog qhov tseem ceeb los tsim kom muaj qhov tsis tshua muaj hluav taws xob tiv thaiv tshav kub dissipation.
Ntxiv nrog rau cov qauv tsim finned heat sink, kev nce qib hauv kev tsim khoom siv thev naus laus zis tso cai rau cov dab dej kub kom tsim tau nrog cov duab geometry thiab cov duab kev cai, tso cai rau kev hloov pauv ntau dua hauv kev tsim thiab kev ua haujlwm thermal. Cov txheej txheem tsim khoom ntxiv xws li 3D luam ntawv tuaj yeem tsim cov txheej txheem sab hauv thiab txhim kho txoj hauv kev zoo hauv cov dab dej kub, yog li kev txhim kho kev ua kom txias hauv kev siv LED.
4. Siv cov kev tswj xyuas thermal
Ntxiv nrog rau cov dab dej kub, lwm cov kev tswj xyuas thermal tuaj yeem siv los txhim kho kev ua kom txias tag nrho ntawm LED teeb pom kev zoo. Cov cuab yeej ua kom txias txias, xws li cov kiv cua lossis cov tshuab ua kua ua kua, tuaj yeem ua ke nrog cov dab dej kub kom muaj peev xwm ua kom txias ntxiv, tshwj xeeb tshaj yog rau cov ntawv siv hluav taws xob LED uas tsis muaj cua txias ib leeg yuav tsis txaus.
Tsis tas li ntawd, qhov tsim ntawm LED teeb pom kev zoo yuav tsum xav txog tag nrho cov thermal ib puag ncig, nrog rau qhov kub thiab txias ntawm huab cua, kom ntseeg tau tias cov cua sov tsim los ntawm LEDs tau zoo dissipated. Txoj kev ua pa kom zoo thiab cov cua kub dissipation yuav tsum tau muab tso rau hauv tag nrho cov txheej txheem tsim los tiv thaiv kev tsim hluav taws xob thiab tswj qhov kev ua haujlwm zoo ntawm LEDs.
Hauv cov ntsiab lus, kev tsim cov dab dej kub rau cov ntawv thov LED yuav tsum tau ua tib zoo xav txog ntau yam, nrog rau cov yam ntxwv thermal ntawm LED, xaiv cov khoom siv hluav taws xob tsim nyog, thiab kev ua kom zoo ntawm cov dab dej kub tsim. Los ntawm kev siv cov khoom siv siab heev thiab cov tswv yim tsim tshiab, cov dab dej kub ua tau zoo tuaj yeem tsim kom muaj cua sov kom zoo, ua kom muaj kev ntseeg tau ntev thiab ua haujlwm ntawm LED teeb pom kev zoo. Raws li LED thev naus laus zis txuas ntxiv txhim kho, cov kev tswj xyuas thermal zoo, suav nrog cov dab dej kub, tseem ceeb heev rau kev ua kom tau txais txiaj ntsig zoo ntawm LED teeb pom kev zoo thaum tswj kev ua haujlwm zoo.
