Tam sim no, qhov teeb meem loj tshaj plaws ntawm LED teeb pom kev zoo yog cov cua sov dissipation. Tsis zoo cua sov dissipation tau ua rau LED tsav tsheb cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob electrolytic uas tau dhau los ua qhov tsis txaus nyob rau hauv kev txhim kho ntxiv ntawm LED teeb pom kev zoo, thiab ua rau muaj kev puas tsuaj ntxov ntawm LED teeb pom kev zoo.
Nyob rau hauv lub luminaire tov siv LV LED lub teeb qhov chaw, vim hais tias lub LED lub teeb qhov chaw ua hauj lwm nyob rau hauv ib tug tsawg voltage (VF=3.2V), siab tam sim no (IF=300 ~ 700mA) ua hauj lwm lub xeev, nws generates cua sov ntau. Qhov chaw ntawm cov teeb pom kev zoo yog me me thiab thaj chaw me me. Nws yog ib qho nyuaj rau lub radiator kom dissipate tshav kub sai. Txawm hais tias muaj ntau yam ntawm cov cua kub dissipation schemes tau txais yuav, cov txiaj ntsig tsis txaus siab thiab dhau los ua qhov teeb meem tsis tuaj yeem daws teeb meem rau LED teeb pom kev zoo. Peb ib txwm nrhiav cov khoom siv uas yooj yim siv, muaj cov thermal conductivity zoo, thiab tus nqi qis.
Tam sim no, tom qab lub teeb pom kev zoo ntawm LED, txog 30% ntawm cov hluav taws xob hluav taws xob tau hloov mus rau lub teeb lub zog, thiab qhov seem yog hloov mus rau hauv lub zog hluav taws xob. Yog li ntawd, kom xa tawm ntau lub zog cua sov kom sai li sai tau yog lub tshuab tseem ceeb hauv kev tsim qauv ntawm LED teeb. Thaum tshav kub kub lub zog yuav tsum tau dissipated los ntawm tshav kub conduction, tshav kub convection, thiab tshav kub tawg. Tsuas yog los ntawm cov cua sov kom sai li sai tau tuaj yeem ua kom cov kab noj hniav kub hauv LED teeb kom txo tau zoo, thiab cov khoom siv hluav taws xob tuaj yeem tiv thaiv kev ua haujlwm nyob rau hauv qhov kub thiab txias ib puag ncig, thiab kev laus ntxov ntxov ntawm lub teeb ci LED vim ntev. -lub sij hawm kub kub ua haujlwm yuav zam tau.
Txoj kev tshav kub dissipation ntawm LED teeb pom kev zoo
Vim tias lub teeb ci LED nws tus kheej tsis muaj infrared lossis ultraviolet rays, LED lub teeb qhov chaw nws tus kheej tsis muaj hluav taws xob kub dissipation muaj nuj nqi. Txoj kev tshav kub dissipation ntawm LED teeb pom kev zoo tuaj yeem tsuas yog rho tawm cov cua sov los ntawm lub radiator ze ze nrog LED teeb hlaws phaj. Lub tshuab hluav taws xob yuav tsum muaj kev ua haujlwm ntawm cov khoom siv hluav taws xob, cov cua sov convection, thiab hluav taws xob hluav taws xob.
Txhua lub tshuab hluav taws xob, ntxiv rau qhov muaj peev xwm ua kom muaj cua sov sai sai los ntawm qhov chaw tshav kub mus rau saum npoo ntawm lub tshuab hluav taws xob, qhov tseem ceeb yog dissipate cua sov rau hauv huab cua los ntawm convection thiab hluav taws xob. Thaum tshav kub kub conduction tsuas yog daws tau txoj kev hloov hluav taws xob, thiab thermal convection yog lub luag haujlwm tseem ceeb ntawm lub tshuab hluav taws xob. Lub tshav kub dissipation kev ua tau zoo yog tsuas yog txiav txim siab los ntawm tshav kub dissipation cheeb tsam, cov duab, thiab lub peev xwm ntawm natural convection siv. Thermal hluav taws xob tsuas yog ib qho kev pabcuam.
Feem ntau hais lus, yog tias qhov kev ncua deb ntawm qhov chaw tshav kub mus rau saum npoo ntawm lub tshuab hluav taws xob tsawg dua 5 hli, tsuav yog qhov thermal conductivity ntawm cov khoom muaj ntau dua 5, cov cua sov tuaj yeem raug xa tawm, thiab qhov seem ntawm cov cua sov yuav tsum yog. dominated los ntawm thermal convection.
Feem ntau ntawm cov teeb pom kev zoo LED tseem siv hluav taws xob tsawg (VF=3.2V) thiab siab tam sim no (IF=200 ~ 700mA) LED teeb hlaws. Vim muaj cua sov siab thaum lub sijhawm ua haujlwm, aluminium alloy nrog thermal conductivity ntau dua yuav tsum tau siv. Feem ntau muaj cov tuag-cast aluminium radiators, extruded aluminium radiators, thiab stamped aluminium radiators. Tuag-casting aluminium radiator yog cov cuab yeej siv siab casting qhov chaw. Cov kua zinc, tooj liab, thiab aluminium alloy yog poured rau hauv lub inlet ntawm lub tshuab tuag-casting, thiab lub tshuab tuag-casting yog tuag-casted rau cam khwb cia radiator nrog ib tug zoo li txwv los ntawm ib tug pre-tsim pwm.
Tuag-cast aluminium radiator
Tus nqi tsim khoom yog tswj tau, thiab lub tshav kub dissipation tis tsis tuaj yeem ua nyias, thiab nws yog ib qho nyuaj rau kev loj hlob ntawm tshav kub dissipation cheeb tsam. Cov khoom siv feem ntau siv tuag-casting rau LED teeb radiators yog ADC10 thiab ADC12.
Extruded aluminium radiator
Cov kua txhuas yog extruded los ntawm ib tug taag tuag, thiab tom qab ntawd lub bar yog machined thiab txiav mus rau hauv tus tsim nyog cov duab ntawm lub radiator. Tus nqi ua tom qab yog tus nqi siab. Radiating tis tuaj yeem ua tau ntau thiab nyias, thiab qhov chaw tshav kub dissipation yog nthuav mus rau qhov loj tshaj plaws. Thaum lub tis radiating ua haujlwm, cua convection tau tsim los ua kom muaj cua sov, thiab cov cua sov dissipation zoo dua. Cov khoom siv feem ntau yog AL6061 thiab AL6063.
Stamped aluminium radiator
yog nias thiab rub cov hlau thiab aluminium alloy daim hlau los ntawm xuas nrig ntaus thiab tuag kom ua rau hauv lub khob zoo li lub radiator. Sab hauv thiab sab nraud ntawm lub tshuab hluav taws xob punched yog du, thiab qhov chaw tshav kub dissipation raug txwv vim tsis muaj tis. Feem ntau siv cov khoom siv aluminium alloy yog 5052, 6061, thiab 6063. Qhov zoo ntawm stamping qhov chaw yog me me thiab cov khoom siv ntawm cov khoom siv yog siab, uas yog cov nqi qis.
Lub tshav kub conduction ntawm aluminium alloy radiator yog qhov zoo tagnrho, thiab nws yog qhov tsim nyog rau kev sib cais hloov qhov hluav taws xob tas li tam sim no. Rau cov khoom siv hluav taws xob tsis raug rho tawm tas li tam sim no, nws yuav tsum tau cais tawm AC thiab DC, cov khoom siv hluav taws xob siab thiab hluav taws xob tsawg los ntawm cov qauv tsim ntawm lub teeb kom dhau CE lossis UL daim ntawv pov thawj.
Yas-clad aluminium radiator
yog lub dab dej kub uas muaj thermally conductive yas plhaub thiab txhuas core. Lub thermal conductive yas thiab aluminium kub dab dej yog tsim nyob rau hauv lub txhaj tshuaj molding tshuab nyob rau hauv ib lub sij hawm, thiab aluminium kub dab dej yog siv los ua ib feem, uas yuav tsum tau machined ua ntej. Lub tshav kub ntawm LED teeb hlaws yog xa mus rau lub thermally conductive yas los ntawm aluminium kub dissipation core. Lub thermally conductive yas siv nws ntau tis los tsim cov cua convection rau cov cua sov dissipation, thiab siv nws saum npoo kom tawg ib feem ntawm cov cua sov.
Yas-clad aluminium radiators feem ntau siv cov xim thawj ntawm cov khoom siv thermally conductive, dawb thiab dub, thiab cov yas yas-clad aluminium radiators muaj cov hluav taws xob zoo dua thermal dissipation. Thermally conductive yas yog ib yam khoom siv thermoplastic. Lub fluidity, ntom, toughness thiab lub zog ntawm cov khoom yog yooj yim rau txhaj molded. Nws muaj kev tiv thaiv zoo rau lub caij txias thiab cua sov thiab kev rwb thaiv tsev zoo heev. Lub emissivity coefficient ntawm thermally conductive yas zoo dua li cov khoom siv hlau zoo tib yam.
Qhov ceev ntawm thermally conductive yas yog 40% qis dua li ntawm txhuas thiab ceramics tuag. Qhov hnyav ntawm cov yas-clad aluminium tuaj yeem raug txo los ntawm ze li ib feem peb rau tib cov duab ntawm lub radiator. Piv nrog rau tag nrho-aluminium radiator, tus nqi ua haujlwm tsawg, lub voj voog ua haujlwm luv luv, thiab kev ua haujlwm kub tsawg; Cov khoom tiav tsis tawg; cov neeg siv khoom muab kev txhaj tshuaj molding tshuab tuaj yeem ua tiav qhov tsim thiab tsim cov khoom sib txawv ntawm lub teeb. Cov yas-clad aluminium radiator muaj kev ua haujlwm zoo rwb thaiv tsev thiab yooj yim kom dhau txoj cai kev nyab xeeb.
High thermal conductivity yas radiator
Lub siab thermal conductivity yas radiator tau tsim sai heev tsis ntev los no. Lub siab thermal conductivity yas radiator yog tag nrho cov yas radiator. Nws cov thermal conductivity yog kaum ob lub sij hawm siab dua li cov yas zoo tib yam, ncav cuag 2-9w / mk. Nws muaj cov thermal conduction zoo heev thiab cov hluav taws xob hluav taws xob muaj peev xwm. ; Ib hom tshiab ntawm cov khoom siv insulating thiab cov cua sov dissipating uas tuaj yeem siv rau ntau lub teeb hluav taws xob, thiab tuaj yeem siv dav hauv ntau yam LED teeb ntawm 1W ~ 200W.
High thermal conductivity yas tiv taus qhov ntsuas hluav taws xob mus txog 6000V AC, haum rau kev hloov pauv tsis tu ncua tam sim no, HVLED high voltage linear tas li tam sim no fais fab mov. Ua kom cov teeb pom kev zoo li no yooj yim dhau CE, TUV, UL thiab lwm yam kev soj ntsuam nruj. HVLED txais yuav high voltage (VF=35-280VDC), tsis tshua muaj tam sim no (IF=20-60mA) ua hauj lwm lub xeev, yog li lub tshav kub ntawm HVLED teeb hlaws board yog txo. Lub siab thermal conductivity yas radiator tuaj yeem siv tshuaj molding los yog extruder.
Ib zaug molding, cov khoom tiav lawm muaj siab smoothness. Txhim kho qhov ua tau zoo ntawm kev tsim khoom, thiab kev tsim qauv yooj yim yog siab, uas tuaj yeem muab kev ua si tag nrho rau tus tsim qauv' lub tswv yim tsim. Lub siab thermal conductivity yas radiator yog polymerized los ntawm PLA (pob kws hmoov txhuv nplej siab), uas yog tag nrho degradable, tsis muaj residue, tsis muaj tshuaj lom neeg, tsis muaj kuab paug hlau hnyav nyob rau hauv cov txheej txheem ntau lawm, tsis muaj dej phwj tuaj, tsis muaj roj pov tseg, thiab ua tau raws li lub ntiaj teb no ib puag ncig tiv thaiv.
High thermal conductivity yas kub dab dej yog ntom ntom ntim nrog nano-scale hlau ions ntawm PLA molecules, uas tuaj yeem txav tau sai ntawm qhov kub thiab txias kom muaj zog hluav taws xob. Nws qhov tseem ceeb yog qhov zoo dua li cov khoom siv hlau ua kom sov. High thermal conductivity yas radiator tiv taus kub, 150 ℃ rau tsib teev yam tsis muaj kev tawg lossis deforming. Nws yog siv nrog high-voltage linear tas li tam sim no IC tsav tsheb qhov kev pab cuam, tsis muaj electrolytic capacitors thiab loj-ntim inductance, zoo heev txhim kho lub neej ntawm tag nrho cov LED teeb, uas tsis yog-kev sib cais fais fab mov tov, thiab high efficiency, tsawg nqi. Nws yog tshwj xeeb tshaj yog haum rau daim ntawv thov ntawm fluorescent raj thiab high-power industrial thiab mining teeb.
High thermal conductivity yas radiator tuaj yeem tsim nrog ntau qhov kev ua kom txias tis, cov cua txias tis tuaj yeem ua rau ntau thiab nyias, thiab qhov chaw tshav kub tuaj yeem ua kom tiav. Thaum cov cua txias ua haujlwm, cua convection tau tsim los ua kom muaj cua sov, thiab cov cua sov dissipation zoo dua. Lub tshav kub ntawm LED teeb hlaws yog ncaj qha xa mus rau lub tshav kub dissipation tis los ntawm lub siab thermal conductivity yas, thiab lub tshav kub yog sai sai dissipated los ntawm huab cua convection thiab nto hluav taws xob.
High thermal conductivity yas cua sov dab dej muaj qhov sib zog sib zog dua li txhuas. Qhov ceev ntawm txhuas yog 2700kg / m3, thaum lub zog ntawm cov yas yog 1420kg / m3, uas yog yuav luag ib nrab ntawm txhuas. Yog li ntawd, qhov hnyav ntawm lub tshuab hluav taws xob yas nrog tib lub cev tsuas yog 1/2 ntawm cov txhuas. Ntxiv mus, kev ua haujlwm yog yooj yim, thiab lub voj voog molding tuaj yeem ua luv luv los ntawm 20-50%, uas txo cov nqi ntawm cov nqi.
