Txoj kev los txo cov thermal tsis kam ntawm heatsink
Thaum tham txog high-power hluav taws xob heatsink, peb feem ntau hnov ib lo lus - thermal kuj, uas yog qhov kev tiv thaiv los ntawm lub tshav kub ntws dissipated los ntawm high-power electronics nyob rau hauv cov txheej txheem kis tau tus mob (los ntawm ib tug tej yam nruab nrab). Nws yog ib qho kev qhia dav uas qhia txog kev muaj peev xwm los tiv thaiv kev hloov hluav taws xob. Yuav ua li cas kom txo tau cov thermal tsis kam ntawm lub radiator yog ib kauj ruam tseem ceeb uas cuam tshuam rau cov cua kub dissipation kev ua tau zoo, uas yuav tsis raug ignored nyob rau hauv lub thermal tsim.
Nyob rau hauv qhov tseeb, nce qhov dav ntawm heatsink kuj yog ib txoj hauv kev zoo los txo cov thermal tiv thaiv thaum tsim hluav taws xob heatsink, thiab ib txoj hauv kev zoo los txo cov thermal kuj thaum qhov hnyav thiab ntim tso cai. Cov kev ntsuas geometric uas cuam tshuam rau qhov ntsuas geometric ntawm lub tshuab hluav taws xob hluav taws xob yog: thickness, qhov siab, kab sib nrug, thiab kev sib raug zoo ntawm txhua qhov ntsuas thiab qhov sib txuas.
Lub thermal tsis kam coefficient ntawm heatink tsis hloov pauv loj nrog qhov nce ntawm fin thickness, qhov kub hloov me ntsis, thawj zaug txo thiab tom qab ntawd nce, thiab qhov kub hloov pauv hloov ntawm qhov tsis zoo mus rau qhov zoo. Nyob rau hauv kev siv tswv yim, hloov lub thickness ntawm lub fin yuav tsuas ua rau cov kev hloov ntawm lub internal tshav kub hloov kev ua tau zoo thiab sab hauv kub qhov chaw ntawm lub hluav taws xob radiator, tab sis yuav tsis hloov qhov chaw sib cuag ntawm lub fin thiab cov huab cua sab nraud, thiab yuav tsis txhim kho qhov chaw ntawm lub fins. convective tshav kub hloov coefficient. Yog li ntawd, qhov hloov fin thickness muaj me ntsis cuam tshuam rau lub thermal kuj ntawm hluav taws xob heatsink.
Lub fin thickness ntawm lub heatsink tsis yog ib qho tseem ceeb parameter nyob rau hauv qhov tseeb tsim. Thaum qhov dav thiab fins naj npawb ntawm cov hluav taws xob heatsink tseem tsis hloov pauv, cov fins tuab heev tsis tsuas yog nce qhov hnyav, tab sis kuj txo qhov sib nrug ntawm qhov sib txawv. Yog li ntawd, nws tuaj yeem txiav txim siab nce nws qhov dav thaum tsim cov heatsink.
