Pakali pano, vuto lalikulu luso laKuwala kwa LEDndi kutentha kutentha. Kuwonongeka koyipa kwa kutentha kwapangitsa kuti magetsi oyendetsa galimoto a LED ndi electrolytic capacitor akhale bolodi lalifupi lopititsa patsogolo kuyatsa kwa LED, komanso chifukwa chakukalamba msanga kwa gwero la kuwala kwa LED.

Mu chiwembu chowunikira pogwiritsa ntchito magwero a kuwala kwa LV LED, chifukwa cha kuwala kwa LED komwe kumagwira ntchito pamagetsi otsika (VF = 3.2V) ndi zamakono (IF = 300-700mA), kutentha kwa kutentha kumakhala koopsa. Zowunikira zachikhalidwe zimakhala ndi malo ochepa, ndipo zoyatsira zing'onozing'ono zotentha zimakhala zovuta kutumiza kutentha kunja. Ngakhale kutengera njira zosiyanasiyana zoziziritsira, zotsatira zake sizinali zokhutiritsa, kukhala vuto lomwe silingathetsedweZowunikira za LED. Nthawi zonse timayesetsa kupeza zipangizo zochepetsera kutentha zomwe zimakhala zosavuta kugwiritsa ntchito, zokhala ndi matenthedwe abwino.

Pakalipano, pafupifupi 30% ya mphamvu yamagetsi ya magetsi a magetsi a LED imasinthidwa kukhala mphamvu yowunikira pambuyo poyatsidwa, pamene ena onse amasandulika kukhala mphamvu yotentha. Chifukwa chake, kutumizira kunja mphamvu zotentha kwambiri posachedwa ndiukadaulo wofunikira pamapangidwe opangira zowunikira za LED. Mphamvu zamatenthedwe zimafunika kutayidwa kudzera mumayendedwe amafuta, convection, ndi radiation. Pokhapokha potumiza kutentha kwanthawi yayitali kutentha kwa patsekeke mkatiNyali ya LEDkukhala bwino kuchepetsedwa, magetsi atetezedwe kuti asagwire ntchito kwa nthawi yayitali yotentha kwambiri, ndipo kukalamba msanga kwa gwero la kuwala kwa LED chifukwa cha ntchito ya nthawi yayitali yotentha kwambiri kupewedwe.

Njira zochepetsera kutentha pazowunikira za LED

Chifukwa magwero a kuwala kwa LED alibe ma radiation ya infrared kapena ultraviolet, alibe ntchito yotulutsa kutentha. Njira yochepetsera kutentha ya zowunikira za LED zitha kungotengedwa kudzera m'mitsinje yotentha yophatikizidwa ndi mbale za mikanda ya LED. Radiator iyenera kukhala ndi ntchito zowongolera kutentha, kuwongolera kutentha, ndi kuyatsa kutentha.

Radiyeta iliyonse, kuwonjezera pakutha kutumiza mwachangu kutentha kuchokera ku gwero la kutentha kupita pamwamba pa radiator, makamaka imadalira pa convection ndi ma radiation kuti athetse kutentha mumlengalenga. Kutentha kwa kutentha kumangothetsa njira yotumizira kutentha, pamene kutentha kwa kutentha ndi ntchito yaikulu ya radiator. Kutentha kwapang'onopang'ono kumatsimikiziridwa makamaka ndi malo otenthetsera kutentha, mawonekedwe, ndi mphamvu yachilengedwe ya convection, pamene kutentha kwa kutentha ndi ntchito yothandiza chabe.

Nthawi zambiri, ngati mtunda kuchokera ku gwero la kutentha kupita pamwamba pa radiator ndi wosakwana 5mm, bola ngati kutentha kwa zinthuzo kuli kokulirapo kuposa 5, kutentha kwake kumatha kutumizidwa kunja, ndipo kutentha kotsalako kuyenera kuyendetsedwa ndi kutenthetsa kwamafuta. .

Magwero ambiri owunikira a LED amagwiritsabe ntchito magetsi otsika (VF = 3.2V) ndi mikanda yamakono ya LED (IF=200-700mA). Chifukwa cha kutentha kwakukulu pakugwira ntchito, zotayira za aluminiyamu zokhala ndi matenthedwe apamwamba ziyenera kugwiritsidwa ntchito. Nthawi zambiri pamakhala ma radiator a aluminiyamu otayika, ma radiator a aluminiyamu otuluka, ndi ma radiator osindikizidwa. Die cast aluminiyamu radiator ndi ukadaulo wa zida zoponyera mphamvu, zomwe zimaphatikizapo kuthira madzi a zinki amkuwa a aluminiyamu aloyi mu doko lamakina oponyera kufa, ndikuponyera mu nkhungu yomwe idapangidwa kale yokhala ndi mawonekedwe okonzedweratu.

Die cast aluminiyamu radiator

Mtengo wopangira umatha kulamuliridwa, ndipo phiko lochotsa kutentha silingapangidwe kukhala lochepa, zomwe zimapangitsa kuti zikhale zovuta kukulitsa malo opangira kutentha. Zida zomwe zimagwiritsidwa ntchito kwambiri poponyera ma radiator a nyali za LED ndi ADC10 ndi ADC12.

Radiator ya aluminiyamu yowonjezera

Aluminiyamu yamadzimadzi imatulutsidwa mu mawonekedwe kudzera mu nkhungu yosasunthika, ndiyeno balayo imapangidwa ndi makina ndikudulidwa mu mawonekedwe omwe amafunidwa a sinki ya kutentha, zomwe zimapangitsa kuti pakhale ndalama zambiri zogwirira ntchito pambuyo pake. Mapiko otenthetsera kutentha amatha kukhala ochepa kwambiri, ndi kufalikira kwakukulu kwa malo otenthetsera kutentha. Mapiko otenthetsera kutentha akamagwira ntchito, amangopanga ma convection a mpweya kuti afalitse kutentha, ndipo mphamvu yochotsa kutentha imakhala yabwino. Zida zomwe zimagwiritsidwa ntchito kwambiri ndi AL6061 ndi AL6063.

Radiator ya aluminiyamu yosindikizidwa

Ndi njira yopondaponda ndi kukweza mbale zachitsulo ndi aluminiyamu kudzera pa nkhonya ndi nkhungu kuti apange radiator yooneka ngati chikho. Radiator yosindikizidwa imakhala yozungulira mkati ndi kunja, ndipo malo otenthetsera kutentha amakhala ochepa chifukwa cha kusowa kwa mapiko. Zomwe zimagwiritsidwa ntchito kwambiri ndi aluminiyamu alloy 5052, 6061, ndi 6063. Zigawo zosindikizidwa 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 osadzipatula omwe nthawi zonse amakhalapo, ndikofunikira kuti mukhazikitse magetsi a AC ndi DC, magetsi okwera kwambiri komanso otsika kwambiri kudzera mu kapangidwe kazowunikira kuti mudutse chiphaso cha CE kapena UL.

Pulasitiki yokutidwa ndi aluminiyamu radiator

Ndi chimbudzi cha kutentha chokhala ndi chipolopolo cha pulasitiki chotenthetsera ndi chitsulo cha aluminium. Pulasitiki yotenthetsera ndi aluminiyumu yotenthetsera kutentha imapangidwa nthawi imodzi pamakina opangira jakisoni, ndipo pachimake chotenthetsera kutentha kwa aluminiyamu chimagwiritsidwa ntchito ngati gawo lophatikizidwa lomwe limafunikira kukonza makina. Kutentha kwa mikanda ya nyali ya LED kumasamutsidwa mwachangu kupita ku pulasitiki yotenthetsera yotentha kudzera pachimake cha aluminiyamu chowotcha kutentha. Pulasitiki yamagetsi yotentha imagwiritsa ntchito mapiko ake angapo kupanga mpweya wotulutsa kutentha, ndipo imagwiritsa ntchito pamwamba pake kuti iwunikire kutentha kwina.

Ma radiator opangidwa ndi pulasitiki okhala ndi aluminiyamu nthawi zambiri amagwiritsa ntchito mitundu yoyambirira ya pulasitiki yotenthetsera, yoyera ndi yakuda. Ma radiator apulasitiki apulasitiki akuda okhala ndi aluminiyamu ma radiator ali ndi ma radiation abwinoko komanso kutentha kwapang'onopang'ono. Thermal conductive pulasitiki ndi mtundu wa zinthu thermoplastic. The fluidity, kachulukidwe, kulimba ndi mphamvu zakuthupi ndi zosavuta kuumba jekeseni. Ili ndi kukana kwabwino kumayendedwe ozizira komanso otentha komanso magwiridwe antchito abwino kwambiri. Thermal coefficient of thermal conductive pulasitiki ndi yapamwamba kuposa yazitsulo wamba

Kachulukidwe ka pulasitiki yotenthetsera matenthedwe ndi 40% yotsika kuposa ya aluminiyamu yakufa-cast ndi zoumba, ndipo kwa ma radiator a mawonekedwe omwewo, kulemera kwa aluminiyamu yokutira pulasitiki kumatha kuchepetsedwa pafupifupi gawo limodzi mwa magawo atatu; Poyerekeza ndi ma radiator onse a aluminiyamu, mtengo wokonza ndi wochepa, kagawo kakang'ono kameneka kamakhala kochepa, ndipo kutentha kwapakati kumakhala kochepa; Chotsirizidwacho sichiri chofooka; Makina opangira jekeseni a kasitomala amatha kugwiritsidwa ntchito popanga mawonekedwe osiyanasiyana ndikupanga zowunikira. Radiyeta ya aluminiyamu yokhala ndi pulasitiki imakhala ndi ntchito yabwino yotchinjiriza ndipo ndiyosavuta kutsata malamulo achitetezo.

High matenthedwe madutsidwe pulasitiki radiator

High matenthedwe madutsidwe pulasitiki ma radiators apanga mofulumira posachedwapa. High matenthedwe machulukidwe pulasitiki ma radiators onse pulasitiki ma radiators, ndi matenthedwe madutsidwe kachulukidwe makumi angapo kuposa mapulasitiki wamba, kufika 2-9w/mk, ndi kwambiri kutentha conduction ndi mphamvu cheza; 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 yotentha kwambiri imatha kupirira voteji mpaka 6000V AC, kupangitsa kuti ikhale yoyenera kugwiritsa ntchito magetsi osadzipatula omwe nthawi zonse amakhala ndi magetsi okwera kwambiri omwe ali ndi HVLED. Pangani mtundu uwu wa kuwala kwa LED kosavuta kudutsa malamulo okhwima a chitetezo monga CE, TUV, UL, ndi zina zotero. HVLED imagwira ntchito pamagetsi apamwamba (VF = 35-280VDC) ndi otsika panopa (IF = 20-60mA), zomwe zimachepetsa kutentha. ya mbale ya bead ya HVLED. High matenthedwe machulukidwe pulasitiki ma radiators angagwiritsidwe ntchito ndi miyambo jekeseni akamaumba ndi extrusion makina.

Akapangidwa, mankhwala omalizidwa amakhala osalala kwambiri. Kupititsa patsogolo zokolola, ndi kusinthasintha kwakukulu pakupanga masitayelo, kungathe kupititsa patsogolo nzeru zamapangidwe a wopanga. Radiyeta ya pulasitiki yotentha kwambiri imapangidwa ndi polymerization ya PLA (chimanga), yowonongeka kwathunthu, 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 dissipation thupi ali ali odzaza ndi ayoni zitsulo nanoscale, amene mofulumira kusuntha pa kutentha ndi kuonjezera matenthedwe cheza mphamvu. Mphamvu yake ndi yoposa ya matupi achitsulo osungunula kutentha. The matenthedwe machulukidwe pulasitiki rediyeta ndi kugonjetsedwa ndi kutentha kwambiri, ndipo si kusweka kapena kupunduka kwa maola asanu pa 150 ℃. Pogwiritsa ntchito pulogalamu yamagetsi yamagetsi yamagetsi yokhazikika ya IC, sifunikira electrolytic capacitor ndi inductance yayikulu, kuwongolera kwambiri moyo wa nyali yonse ya LED. Dongosolo lamagetsi losadzipatula lili ndi mphamvu zambiri komanso zotsika mtengo. Makamaka oyenera kugwiritsa ntchito machubu fulorosenti ndi mkulu-mphamvu mafakitale ndi migodi nyali.

Ma radiator apulasitiki otenthetsera kwambiri amatha kupangidwa ndi zipsepse zambiri zowonda bwino kwambiri, zomwe zimatha kukhala zoonda kwambiri komanso kukhala ndi malo owonjezera kutentha. Zipsepse zowononga kutentha zikamagwira ntchito, zimangopanga ma convection a mpweya kuti afalitse kutentha, zomwe zimapangitsa kuti pakhale kutentha kwabwino. Kutentha kwa mikanda ya nyali ya LED kumasamutsidwa mwachindunji ku phiko lotenthetsera kutentha kudzera m'mapulasitiki apamwamba opangira matenthedwe, ndipo amachotsedwa mwachangu kudzera mumayendedwe a mpweya ndi ma radiation apamtunda.

Ma radiator apulasitiki otenthetsera kwambiri amakhala ndi kachulukidwe kopepuka kuposa aluminiyamu. Kuchulukana kwa aluminiyumu ndi 2700kg/m3, pomwe kachulukidwe ka pulasitiki ndi 1420kg/m3, pafupifupi theka la aluminiyamu. Choncho, kwa ma radiator a mawonekedwe omwewo, kulemera kwa ma radiator apulasitiki ndi 1/2 chabe ya aluminiyumu. Kuphatikiza apo, kukonzako ndikosavuta, ndipo mawonekedwe ake amatha kufupikitsidwa ndi 20-50%, zomwe zimachepetsanso mphamvu yoyendetsera ndalama.