Vuto lalikulu laukadaulo pazowunikira za LED pakadali pano ndikutaya kutentha. Kuwonongeka koyipa kwa kutentha kwapangitsa kuti magetsi oyendetsa madalaivala a LED ndi ma electrolytic capacitors akhale zoperewera pakupititsa patsogolo zowunikira za LED, komanso chifukwa chakukalamba msanga kwa magwero a kuwala kwa LED.
Mu chiwembu chowunikira pogwiritsa ntchito gwero la kuwala kwa LV LED, chifukwa cha kayendedwe ka kuwala kwa LED pamagetsi otsika (VF = 3.2V) ndi apamwamba (IF = 300-700mA), imapanga kutentha kwakukulu. Zowunikira zachikale zimakhala ndi malo ochepa, ndipo zimakhala zovuta kuti masinki ang'onoang'ono otentha azitha kutentha msanga. Ngakhale kugwiritsa ntchito njira zosiyanasiyana zochotsera kutentha, zotsatira zake sizinali zogwira mtima ndipo zinakhala vuto losasinthika pazitsulo zowunikira za LED. Nthawi zonse timayesetsa kuti tipeze zipangizo zosavuta komanso zosavuta kugwiritsa ntchito zowonongeka zowonongeka ndi matenthedwe abwino komanso otsika mtengo.
Pakalipano, magetsi a LED akayatsidwa, pafupifupi 30% ya mphamvu yamagetsi imasandulika kukhala mphamvu yowunikira, ndipo zina zonse zimasinthidwa kukhala mphamvu ya kutentha. Chifukwa chake, kutumizira kunja mphamvu zotentha kwambiri posachedwa ndiukadaulo wofunikira pamapangidwe amagetsi a nyali za LED. Mphamvu zamatenthedwe zimafunika kutayidwa kudzera mumayendedwe amafuta, convection, ndi radiation. Pokhapokha potumiza kutentha kwanthawi yayitali komwe kutentha kwa mkati mwa nyali ya LED kungathe kuchepetsedwa bwino, magetsi amatetezedwa kuti asagwire ntchito m'malo otentha kwambiri, komanso kukalamba msanga kwa gwero la kuwala kwa LED komwe kumachitika chifukwa cha kutalika kwa nthawi yayitali. -Kutentha ntchito kupewa.

Njira yochepetsera kutentha kwa zida zowunikira za LED
Chifukwa magwero a kuwala kwa LED okha alibe cheza cha infrared kapena ultraviolet, alibe ntchito yochotsa kutentha kwa ma radiation. Njira yoziziritsira kutentha ya zida zowunikira za LED zitha kutumizidwa kunja kudzera m'madzi otentha ophatikizidwa ndi bolodi la mikanda ya LED. Radiator iyenera kukhala ndi ntchito zowongolera kutentha, kuwongolera kutentha, ndi kuyatsa kutentha.
Radiyeta iliyonse, kuphatikiza kutha kusamutsa kutentha kuchokera kugwero la kutentha kupita pamwamba pa radiator, makamaka imadalira pa convection ndi radiation kuti iwononge kutentha mumlengalenga. Kutentha kwa kutentha kumangothetsa njira yotumizira kutentha, pamene kutentha kwa kutentha ndi ntchito yaikulu ya masinki otentha. Kutentha kwapang'onopang'ono kumatsimikiziridwa makamaka ndi malo otenthetsera kutentha, mawonekedwe, ndi mphamvu yachilengedwe ya convection, ndipo kutentha kwa kutentha ndi ntchito yothandiza chabe.
Nthawi zambiri, ngati mtunda kuchokera ku gwero kutentha pamwamba pa lakuya kutentha ndi zosakwana 5mm, malinga ngati matenthedwe madutsidwe wa zinthu ndi wamkulu kuposa 5, kutentha ake akhoza kunja, ndi ena onse kutentha dissipation ayenera. kulamuliridwa ndi matenthedwe convection.
Zowunikira zambiri za LED zimagwiritsabe ntchito mikanda ya LED yokhala ndi magetsi otsika (VF = 3.2V) komanso apamwamba kwambiri (IF=200-700mA). Chifukwa cha kutentha kwakukulu komwe kumapangidwa panthawi yogwira ntchito, ma aloyi a aluminiyumu okhala ndi matenthedwe apamwamba ayenera kugwiritsidwa ntchito. Nthawi zambiri pamakhala ma radiator a aluminiyamu a kufa cast, ma radiator a aluminiyamu otuluka, ndi ma radiator osindikizidwa. Die cast aluminiyamu radiator ndi ukadaulo wa zida zoponyera mphamvu, momwe madzi a zinki amkuwa a aluminiyamu amatsanuliridwa mu doko lodyera la makina oponyera kufa, kenako kufa kuponyedwa ndi makina oponya kufa kuti apange radiator yokhala ndi mawonekedwe ofotokozedwa. ndi nkhungu yopangidwa kale.

Die cast aluminiyamu radiator
Mtengo wopanga umatha kulamuliridwa, koma mapiko otulutsa kutentha sangapangidwe kukhala ochepa, zomwe zimapangitsa kuti zikhale zovuta kuwonjezera malo oziziritsa kutentha. Zida zomwe zimagwiritsidwa ntchito kwambiri poyatsira nyali za LED ndi ADC10 ndi ADC12.

Radiator ya aluminiyamu yofinyidwa
Kufinya aluminiyamu yamadzimadzi kuti ikhale yopangidwa ndi nkhungu yosasunthika, ndiyeno kudula kapiritsi kukhala mawonekedwe ofunikira a sinki ya kutentha kupyolera mu makina, kumabweretsa ndalama zambiri pokonza pambuyo pake. Mapiko otenthetsera kutentha amatha kukhala ochepa kwambiri, ndi kufalikira kwakukulu kwa malo otenthetsera kutentha. Mapiko ochotsa kutentha akamagwira ntchito, amangopanga ma convection a mpweya kuti afalikire kutentha, ndipo mphamvu yochotsa kutentha ndi yabwino. Zida zomwe zimagwiritsidwa ntchito kwambiri ndi AL6061 ndi AL6063.

Radiator ya aluminiyamu yosindikizidwa
Zimatheka ndi kupondaponda ndi kukoka mbale zachitsulo ndi aluminiyamu ndi makina okhomerera ndi nkhungu kuti apange ma radiator opangidwa ndi chikho. Ma radiator osindikizira amakhala ndi m'mphepete mwa mkati ndi kunja, koma malo ochepa otaya kutentha chifukwa cha kusowa kwa mapiko. Zomwe zimagwiritsidwa ntchito kwambiri ndi aluminiyumu alloy 5052, 6061, ndi 6063. Zigawo zosindikizira zimakhala ndi khalidwe lochepa komanso kugwiritsa ntchito zinthu zambiri, zomwe zimapangitsa kuti zikhale zotsika mtengo.
The matenthedwe madutsidwe a aluminiyamu aloyi ma radiators ndi abwino ndipo ndi oyenera kusinthana paokha kusintha magetsi nthawi zonse. Kwa magetsi omwe sadzipatula nthawi zonse, ndikofunikira kuti mukhazikitse magetsi a AC ndi DC, magetsi apamwamba komanso otsika kudzera pamapangidwe amagetsi kuti mudutse chiphaso cha CE kapena UL.

Pulasitiki yokutidwa ndi aluminiyamu radiator
Ndilo choyatsira kutentha chokhala ndi chipolopolo cha pulasitiki choyendetsa kutentha ndi pachimake cha aluminiyamu. Pulasitiki yotentha yotentha ndi aluminiyumu yowotcha kutentha imapangidwa kamodzi pamakina opangira jakisoni, ndipo pachimake chotenthetsera kutentha kwa aluminiyamu chimagwiritsidwa ntchito ngati gawo lophatikizidwa, lomwe limafunikira kukonza makina pasadakhale. Kutentha kwa mikanda ya LED kumayendetsedwa mwachangu kupita ku pulasitiki yotenthetsera yotentha kudzera pachimake cha aluminiyumu chowotcha kutentha. Pulasitiki yotulutsa matenthedwe imagwiritsa ntchito mapiko ake angapo kupanga mpweya wotulutsa kutentha kwa mpweya ndikuwunikira kutentha kwina kwake.
Ma radiator a aluminium wokutidwa ndi pulasitiki nthawi zambiri amagwiritsa ntchito mitundu yoyambirira ya pulasitiki yotenthetsera, yoyera ndi yakuda. Ma radiator a pulasitiki akuda okutidwa ndi aluminiyamu amakhala ndi zotsatira zabwino zowononga kutentha kwa ma radiation. Pulasitiki yotchedwa Thermal conductive Plastiki ndi mtundu wazinthu za thermoplastic zomwe zimakhala zosavuta kuumba kudzera mu jekeseni chifukwa cha madzi ake, kachulukidwe, kulimba, komanso mphamvu. Ili ndi kukana kwabwino kwa matenthedwe otenthetsera matenthedwe komanso magwiridwe antchito abwino kwambiri a insulation. Mapulasitiki opangira matenthedwe amakhala ndi ma radiation apamwamba kuposa zida wamba zachitsulo.
Kachulukidwe ka pulasitiki yotulutsa thermally ndi 40% yotsika kuposa ya aluminiyamu ya die cast ndi zoumba. Kwa ma radiator a mawonekedwe omwewo, kulemera kwa pulasitiki yokutidwa ndi aluminiyamu kumatha kuchepetsedwa pafupifupi gawo limodzi mwa magawo atatu; Poyerekeza ndi ma radiator onse a aluminiyamu, ili ndi ndalama zotsika mtengo, zozungulira zazifupi, komanso kutentha kocheperako; Chotsirizidwacho sichiri chofooka; Makasitomala atha kupereka makina awo opangira jakisoni kuti apange mawonekedwe owoneka bwino komanso kupanga zowunikira. Radiyeta ya aluminiyamu yokulungidwa yapulasitiki imakhala ndi ntchito yabwino yotchinjiriza ndipo ndiyosavuta kutsata malamulo achitetezo.

High matenthedwe madutsidwe pulasitiki radiator
Ma radiator apulasitiki opangira matenthedwe apamwamba akhala akukula posachedwa. Ma radiator apulasitiki otenthetsera kwambiri ndi mtundu wa radiator yonse ya pulasitiki yokhala ndi machulukidwe otenthetsera nthawi zambiri kuposa mapulasitiki wamba, kufika 2-9w/mk, ndipo amakhala ndi matenthedwe abwino kwambiri opangira ma radiation; Mtundu watsopano wa kusungunula ndi kutentha kutentha zomwe zingagwiritsidwe ntchito pa nyali zosiyanasiyana zamagetsi, ndipo zingagwiritsidwe ntchito kwambiri mu nyali zosiyanasiyana za LED kuyambira 1W mpaka 200W.
Pulasitiki yapamwamba yotenthetsera imatha kupirira AC 6000V ndipo ndiyoyenera kugwiritsa ntchito magetsi osakhazikika komanso magetsi okwera kwambiri a HVLED. Pangani zowunikira za LED izi kukhala zosavuta kudutsa zowunikira mwamphamvu zachitetezo monga CE, TUV, UL, ndi zina. HVLED imagwira ntchito pamagetsi apamwamba (VF=35-280VDC) komanso otsika pano (IF=20-60mA), zomwe zimachepetsa kutentha. kupanga kwa HVLED bead board. Ma radiator apulasitiki otenthetsera kwambiri amatha kupangidwa pogwiritsa ntchito jekeseni wamba kapena makina otulutsa.
Akapangidwa, mankhwala omalizidwa amakhala osalala kwambiri. Kupititsa patsogolo kwambiri zokolola, ndi kusinthasintha kwakukulu pakupanga makongoletsedwe, kulola okonza kuti agwiritse ntchito bwino malingaliro awo opangira. Rediyeta ya pulasitiki yotentha kwambiri imapangidwa ndi polymerization ya PLA (chimanga), yomwe imatha kuwonongeka, yopanda zotsalira, komanso yopanda kuipitsidwa ndi mankhwala. Ntchito yopanga ilibe kuyipitsa kwazitsulo zolemera, palibe zimbudzi, komanso gasi wotulutsa mpweya, zomwe zimakwaniritsa zofunikira zapadziko lonse lapansi.
The PLA mamolekyu mkati mkulu matenthedwe madutsidwe pulasitiki kutentha lakuya ndi kuli odzaza ndi ayoni zitsulo nanoscale, amene akhoza kuyenda mofulumira pa kutentha ndi kuonjezera matenthedwe cheza mphamvu. Mphamvu yake ndi yoposa ya matupi achitsulo osungunula kutentha. The mkulu matenthedwe madutsidwe pulasitiki kutentha sink ndi kugonjetsedwa ndi kutentha kwambiri ndipo si kuswa kapena kupunduka kwa maola asanu pa 150 ℃. Ikagwiritsidwa ntchito ndi njira yamagetsi yamagetsi yamagetsi yokhazikika ya IC drive, sifunikira ma electrolytic capacitor kapena ma inductors akulu, kuwongolera kwambiri moyo wa nyali za LED. Ndi njira yopangira magetsi yomwe ili ndi mphamvu zambiri komanso yotsika mtengo. Makamaka oyenera kugwiritsa ntchito machubu a fulorosenti ndi nyali zamphamvu kwambiri zamigodi.
Ma radiator apulasitiki otenthetsera kwambiri amatha kupangidwa okhala ndi mapiko ambiri olondola otaya kutentha, omwe amatha kuonda kwambiri kuti apititse patsogolo kukula kwa malo opangira kutentha. Mapiko ochotsa kutentha akamagwira ntchito, amangopanga ma convection a mpweya kuti afalitse kutentha, zomwe zimapangitsa kuti kutentha kuzikhala bwino. Kutentha kwa mikanda ya LED kumasamutsidwa mwachindunji ku phiko lotenthetsera kutentha kudzera m'mapulasitiki opangira matenthedwe apamwamba, ndipo amatayika mwachangu kudzera mumayendedwe a mpweya ndi ma radiation apamtunda.
Ma radiator apulasitiki otenthetsera kwambiri amakhala ndi kachulukidwe kopepuka kuposa aluminiyamu. Kachulukidwe a aluminiyamu ndi 2700kg/m3, pamene kachulukidwe pulasitiki ndi 1420kg/m3, amene pafupifupi theka la zotayidwa. Choncho, kwa ma radiator a mawonekedwe omwewo, kulemera kwa ma radiator apulasitiki ndi 1/2 chabe ya aluminiyumu. Ndipo processing ndi yosavuta, ndi akamaumba mkombero akhoza kufupikitsidwa ndi 20-50%, amene amachepetsanso mtengo wa mphamvu.