Qhov kub dissipation nyhuv ntawm vapor chamber hauv LED
Qhov teeb meem tseem ceeb ntawm high-power LED yog "kub"
Raws li kev soj ntsuam daim ntawv qhia ntawm Cree XLamp XR-E, Lower LED kub tuaj yeem ua rau nws lub neej thiab luminous flux.
Cov ntaub ntawv ntawm 40mil (1 mm²) LED nti
1W nti: kub flux ze rau 100W / CM²
3W nti: kub flux ze rau 300W / CM²
Los ntawm cov ntaub ntawv soj ntsuam saum toj no thiab cov ntaub ntawv, peb tuaj yeem paub tias qhov teeb meem ntawm kev siv hluav taws xob yog qhov kub kub ceev (kub qhov chaw) overheating, es tsis yog tag nrho cov cua sov flux.
Overheating tsom rau ntawm qhov chaw kub, nws yuav cuam tshuam rau lub neej thiab luminous flux ntawm LED.
Yuav ua li cas los daws qhov teeb meem ntawm lub tshav kub tsom rau ntawm qhov chaw kub? Peb pom tias cov khoom siv hluav taws xob muaj peev xwm ua tau zoo tuaj yeem tawg tau sai, yog li zam kom tsis txhob muaj cua sov los ntawm kev tsom mus rau qhov chaw kub. Thiab lub vapor chamber yog ib hom cua sov diffuser uas tuaj yeem tshem tawm cov cua sov sai heev. Nws txoj haujlwm ua haujlwm zoo ib yam li cov yeeb nkab cua sov.
Lub hauv paus ntsiab lus ua haujlwm ntawm vapor chamber
Covvapor chavyog lub tshuab nqus tsev chamber nrog cov qauv columnar sab hauv, feem ntau yog ua los ntawm tooj liab.
Thaum tshav kub hloov los ntawm lub tshav kub mus rau qhov chaw evaporation, cov kua txias nyob rau hauv lub chamber pib vaporize tom qab tau rhuab nyob rau hauv ib tug tsawg nqus tsev vacuum. Nyob rau lub sijhawm no, nws nqus lub zog cua sov thiab nthuav dav sai, thiab cov cua txias hauv cov pa nrawm nrawm tag nrho cov chamber. Thaum cov roj ua haujlwm sib cuag nrog qhov chaw txias, nws yuav condense. Cov cua kub uas muaj thaum lub sij hawm evaporation yog tso tawm los ntawm qhov tshwm sim ntawm condensation, thiab cov condensed txias kua yuav rov qab mus rau lub evaporation tshav kub qhov chaw los ntawm lub capillary channel ntawm lub microstructure, thiab qhov kev ua hauj lwm no yuav rov qab nyob rau hauv lub chamber.
Raws li txoj cai ua haujlwm ntawm lub vapor chamber, peb paub tias:
1. Lub vapor chamber yog ob-dimensional tshav kub conduction khoom, uas muaj peev xwm theoretically ua ib tug loj npaum li cas ntawm tshav kub nyob rau hauv ib tug ob-dimensional ca phaj.
2. Lub vapor chamber tuaj yeem siv rau cov teeb pom kev zoo.
A: Cov qauv geometric yooj yim-cov duab geometric feem ntau yog square thiab puag ncig
B: Qhov saum npoo tsis yooj yim deformed-chamber vapor muaj qhov kam rau siab txog li 0.2 hli.
C: Thaum lub heatsink txaus, yuav muaj qhov sib txawv ntawm qhov kub tsawg-thaum lub heatsink dissipate lub tshav kub, qhov kub hloov yuav tsawg heev.
D: Vapor chamber tsuas tuaj yeem daws qhov teeb meem ntawm kev hloov hluav taws xob, vim tias nws cov cua sov hloov ceev ceev heev, tab sis nws tseem yuav tsum tau ntxiv ib qho txhuas heatsink kom ua tiav cov cua sov dissipation.
Qhov Sib Txawv Sib Txawv
Kev sim 1- Tso lub LED rau ntawm lub tshuab hluav taws xob aluminium, teeb pom kev zoo rau 10 feeb thiab tom qab ntawd tshuab nrog DC kiv cua rau 5 feeb.
(Aluminium heatsink)
Kev sim 2- Tso lub LED rau ntawm lub vapor chamber thiab aluminium heatsink, teeb pom kev zoo rau 10 feeb thiab tom qab ntawd tshuab nrog DC kiv cua rau 5 feeb.
(Vapor chamber ntawm aluminium heatsink)
12W LED teeb
Kev sim infrared 1 tau txais (tsuas yog siv aluminium heatsink)
1-1 : 58 degree , 1-2 : 29 degree , 1-3 : 28.2 degree
Kev sim infrared 2 tau tshwm sim (vapor chamber + aluminium heatsink)
2-1 : 55.2 degree , 2-2 : 31.2 degree , 2-3 : 29.2 degree
Cov ntsiab lus ntawm kev sim:
Qhov kub ntawm qhov kev sim 2 yog 3 degree qis dua qhov kev sim 1.
Lub vapor chamber txhim kho cov cua kub hloov pauv ntawm LED.
10W thermal tsis kam
Kev sim infrared 1 tau txais (tsuas yog siv aluminium heatsink)
1-1 : 80.4 degree 1-2 : 57.6 degree 1-3 : 55.5 degree
Kev sim infrared 2 tau tshwm sim (vapor chamber + aluminium heatsink)
2-1 : 67.1 degree 2-2 : 57.6 degree 2-3 : 56.2 degree
Cov ntsiab lus ntawm kev sim:
Qhov kub ntawm lub nti hauv qhov kev sim 2 yog qis dua qhov hauv kev sim 1 13.3 degree . Lub vapor chamber tau txhim kho cov cua kub ntawm cov nti thiab txo cov thermal kuj.
10W instant thermal kuj
Kev sim infrared 1 tau txais (tsuas yog siv aluminium heatsink)
{{0}}}: 29.5 degree 1-2 :30.0 degree 1-3 : 30.1 degree
Kev sim infrared 2 tau tshwm sim (vapor chamber + aluminium heatsink)
2-1 : 31.5 degree 2-2 : 32.2 degree 2-3 : 32.2 degree
Cov ntsiab lus ntawm kev sim:
Kev sim 2 siv lub vapor chamber yog qhov zoo dua li qhov kev sim 1 ntawm nti kub, thiab tswj qhov kub hloov pauv ntawm 13-15oC rau kev ua haujlwm ntawm 1-10 feeb. Qhov no txhais tau hais tias kev siv cov vapor chamber tuaj yeem txo qhov thermal kuj ntawm cov nti thiab heatsink, tuaj yeem txo qhov kub ntawm qhov sib txuas ntawm qhov kub thiab txias nyob rau hauv tib lub hwj chim-on mob.
Kev sim xaus: lub vapor chamber txhim kho cov thermal conduction ntawm cov nti thiab txo cov thermal kuj
Yuav ua li cas thov lub vapor chamber ntawm high-power LED?
Kev daws A: Ntau cov chips LED tau ncaj qha kaw thiab ntsia rau ntawm lub vapor chamber
Kev sib piv kev sim ntawm high-power LED (50W multi-chip ncaj qha soldered mus rau lub vapor chamber) thiab (50W multi-chip ncaj qha soldered rau tooj liab board)
(50W multi-chip ncaj qha soldered rau lub vapor chamber)
(50W multi-chip ncaj qha soldered rau tooj liab board)
Cov ntaub ntawv sim
(channel 0 ~ 3: nti kub channel 4 ~ 5: heatsink kub)
Lub nti kub ntawm vapor chamber yog 30 degree qis dua li ntawm lub rooj tsavxwm tooj liab
Vapor chamber tuaj yeem ua kom qhov kub ntawm LED qis dua. Thaum tib lub heatsink yog siv los dissipate tshav kub, muaj qhov kub sib txawv ntawm li 30 degree.
Lub vapor chamber tuaj yeem xyuas kom meej tias qhov kub ntawm txhua lub nti ntawm lub rooj tsavxwm yog tib yam. Yog tias lub phaj tooj liab yog siv rau cov cua kub dissipation, qhov kub ntawm qhov chaw nti yuav siab dua li cov nyob ib puag ncig, uas yuav cuam tshuam rau lub neej ntawm cov nti.
Qhov zoo ntawm kev ncaj qha soldering LED chips ntawm lub vapor chamber:
1. Txo qhov kub thiab txias ntawm cov nti thiab txuas ntxiv lub neej ntawm cov nti
2. tuaj yeem ua rau lub nti ua kom pom tseeb, uas zoo dua rau kev tsim tag nrho ntawm lub teeb
3. Ua kom muaj zog ntau lub zog ntim tau
Kev daws B: Sau lub PCB ntawm lub vapor chamber, thiab nruab lub LED ntawm lub vapor chamber los ntawm SMT (Surface Mount Technology).
Tus qauv ntawm Cree XRE nti series siv rau ntawm vapor chamber
Siv SMT, ntsuas cov ntaub ntawv ntawm cov cua kub dissipation ntawm vapor chamber thiab txhuas phaj
Vapor Chamber muaj qhov sib txawv ntawm cov cua sov ntau dua thiab ua kom nrawm dua.
Ua ob qhov kev xeem, peb paub tias:
Lub vapor chamber tuaj yeem tiv taus 170 degree
Vapor Chamber tsis muaj kev txwv ntawm cov duab
Lub tshav kub dissipation ntawm vapor chamber yog los ntawm capillary qhov
Thickness ntawm vapor chamber yam tsawg 3MM
Lub vapor chamber MBTF tshaj 86,400 teev.
Lub vapor chamber tuaj yeem tiv taus ntau tshaj 200 thermal shocks los ntawm -40 degree mus rau 110 degree
Cim npe nrov: Vapor Chamber Basic Knowledge thiab Performance Test, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, customized, dawb qauv, ua nyob rau hauv Suav teb
