Ikibazo gikomeye cya tekiniki kumatara ya LED muri iki gihe ni ugukwirakwiza ubushyuhe. Gukwirakwiza ubushyuhe buke byatumye LED itanga amashanyarazi hamwe na capacitori ya electrolytike ihinduka inenge zo kurushaho guteza imbere urumuri rwa LED, nimpamvu yo gusaza imburagihe bituruka kumatara ya LED.
Muri gahunda yo kumurika ukoresheje LV LED isoko yumucyo, bitewe nuburyo imikorere yumucyo wa LED kumashanyarazi make (VF = 3.2V) numuyoboro mwinshi (IF = 300-700mA), itanga ubushyuhe bwinshi. Ibikoresho byo kumurika gakondo bifite umwanya muto, kandi biragoye ko agace gato gashiramo ubushyuhe vuba vuba. Nubwo hakoreshejwe ibisubizo bitandukanye byo gukwirakwiza ubushyuhe, ibisubizo ntibyashimishije kandi byabaye ikibazo kidakemuka kumatara ya LED. Twama duharanira gushakisha ibintu byoroshye kandi byoroshye-gukoresha-ibikoresho byo gukwirakwiza ubushyuhe hamwe nubushyuhe bwiza bwumuriro nigiciro gito.
Kugeza ubu, iyo urumuri rwa LED rukoreshwa, hafi 30% yingufu zamashanyarazi zihinduka ingufu zoroheje, naho izindi zigahinduka ingufu zubushyuhe. Kubwibyo, kohereza ingufu nyinshi zumuriro vuba bishoboka nubuhanga bwingenzi muburyo bwo gutunganya amatara ya LED. Ingufu zumuriro zigomba gukwirakwizwa binyuze mumashanyarazi, convection, nimirasire. Gusa mugihe cyohereza ibicuruzwa hanze vuba bishoboka ubushyuhe bwa cavit imbere mumatara ya LED buragabanuka neza, amashanyarazi arindwa gukorera ahantu harehare h’ubushyuhe bwo hejuru, no gusaza imburagihe isoko yumucyo LED yatewe nigihe kirekire. -kwirinda gukora ubushyuhe.

Inzira yo gukwirakwiza ubushyuhe bwa LED yamurika
Kuberako urumuri rwa LED ubwabwo rudafite imirasire ya ultraviolet cyangwa ultraviolet, ntabwo rufite imikorere yo gukwirakwiza imirasire. Inzira yo gukwirakwiza ubushyuhe bwamatara ya LED irashobora koherezwa hanze binyuze mumashanyarazi ashyizwe hamwe cyane nu rubaho rwa LED. Imirasire igomba kuba ifite imirimo yo gutwara ubushyuhe, guhuza ubushyuhe, hamwe nimirasire yubushyuhe.
Imirasire iyo ari yo yose, usibye kuba ishobora kohereza vuba ubushyuhe buturuka ku bushyuhe bugashyirwa hejuru ya radiatori, ahanini bushingiye kuri convection hamwe nimirasire kugirango ikwirakwize ubushyuhe mu kirere. Imiyoboro yubushyuhe ikemura gusa inzira yo guhererekanya ubushyuhe, mugihe convection yumuriro nigikorwa nyamukuru cyo gucengera. Imikorere yo gukwirakwiza ubushyuhe igenwa ahanini nubushuhe bwo gukwirakwiza ubushyuhe, imiterere, nuburemere bwa convection naturel, kandi imirasire yumuriro nigikorwa cyabafasha gusa.
Muri rusange, niba intera iva kumasoko yubushyuhe kugeza hejuru yubushyuhe bwa munsi ya 5mm, mugihe cyose ubushyuhe bwumuriro bwibikoresho burenze 5, ubushyuhe bwabwo burashobora koherezwa hanze, naho ubundi ubushyuhe bugashyirwa hanze yiganjemo ubushyuhe bwa convection.
Amashanyarazi menshi ya LED aracyakoresha amasaro ya LED hamwe na voltage nkeya (VF = 3.2V) hamwe numuyoboro mwinshi (IF = 200-700mA). Bitewe nubushyuhe bwinshi butangwa mugihe gikora, aluminiyumu ivanze nubushyuhe bwo hejuru bugomba gukoreshwa. Mubisanzwe hariho imishwarara ya aluminiyumu, imashanyarazi ya aluminiyumu, hamwe na kashe ya aluminiyumu. Imirasire ya Die cast aluminium ni tekinoroji yo guteramo ibice, aho isukari ya zinc y'umuringa ya aluminiyumu isukwa mu cyambu cyo kugaburira imashini ipfa, hanyuma igapfa guterwa n'imashini yica kugirango ikore radiator ifite ishusho isobanuwe byateguwe mbere.

Gupfa kumirasire ya aluminium
Igiciro cy'umusaruro kirashobora kugenzurwa, ariko amababa yo gukwirakwiza ubushyuhe ntashobora gukorwa neza, bigatuma bigora kongera ubushuhe. Ibikoresho bisanzwe bikoreshwa mu gupfunyika amatara ya LED ni ADC10 na ADC12.

Imashanyarazi ya aluminiyumu
Kunyunyuza aluminiyumu mumazi ukoresheje ifumbire ihamye, hanyuma ukata umurongo muburyo bwifuzwa bwumuriro ukoresheje imashini, bitwara amafaranga menshi yo gutunganya mubyiciro byanyuma. Amababa yo gukwirakwiza ubushyuhe arashobora gukorwa cyane, hamwe no kwaguka kwinshi ahantu hashobora gukwirakwizwa. Iyo amababa yo gukwirakwiza ubushyuhe akora, ahita akora ikirere kugirango akwirakwize ubushyuhe, kandi ingaruka zo gukwirakwiza ubushyuhe nibyiza. Ibikoresho bisanzwe bikoreshwa ni AL6061 na AL6063.

Ikimenyetso cya aluminiyumu
Byagerwaho mugushiraho kashe no gukurura ibyuma hamwe na aluminiyumu ya aluminiyumu hamwe nimashini zikubita hamwe nububiko kugirango habeho imishwarara imeze nkigikombe. Imirasire ya kashe ifite impande zimbere ninyuma, ariko ahantu hagabanijwe ubushyuhe buke kubera kubura amababa. Ibikoresho bisanzwe bikoreshwa muri aluminiyumu ni 5052, 6061, na 6063.Ibice bya kashe bifite ubuziranenge buke kandi bukoreshwa cyane, bigatuma biba igisubizo gito.
Amashanyarazi yumuriro wa aluminium alloy radiatori nibyiza kandi birakwiriye guhinduranya ibintu bihoraho bitanga amashanyarazi. Kubintu bidafite aho bihuriye nibitangwa byamashanyarazi, birakenewe gutandukanya AC na DC, amashanyarazi maremare kandi mato mato binyuze mumiterere yimiterere yumucyo kugirango batsinde CE cyangwa UL icyemezo.

Imashanyarazi ya aluminiyumu
Ni icyuma gishyushya hamwe na shitingi itwara ubushyuhe hamwe na aluminiyumu. Ubushyuhe bwo gukwirakwiza ubushyuhe bwa plastiki na aluminiyumu bikozwe mu buryo bumwe bwo kujya mu mashini itera inshinge, kandi intungamubiri ya aluminiyumu ikoreshwa nk'igice cyinjijwemo, gisaba gutunganyirizwa hakiri kare. Ubushyuhe bwamasaro ya LED bukorwa vuba kuri plastiki yumuriro ukoresheje ubushyuhe bwa aluminium. Amashanyarazi ya plasitiki yubushyuhe akoresha amababa yayo menshi kugirango agabanye ubushyuhe bwo guhumeka ikirere kandi akwirakwiza ubushyuhe hejuru yacyo.
Imirasire ya aluminiyumu ipfunyitse muri rusange ikoresha amabara yumwimerere ya plastiki ikora ubushyuhe, yera n'umukara. Imirasire yumukara wa aluminiyumu ifite ingaruka nziza zo gukwirakwiza imirasire. Amashanyarazi ya plasitiki yubushyuhe nubwoko bwibikoresho bya termoplastique byoroshye gukora muburyo bwo gutera inshinge bitewe nubwinshi bwabyo, ubwinshi, ubukana, nimbaraga. Ifite imbaraga zo guhangana nubushyuhe bwumuriro nuburyo bwiza bwo gukora. Amashanyarazi ya plastiki yubushyuhe afite coeffisiyeti yimirasire irenze ibikoresho byuma bisanzwe.
Ubucucike bwa plastiki ikora ubushyuhe buri munsi ya 40% ugereranije niy'urupfu rwa aluminium na ceramika. Imirasire yuburyo bumwe, uburemere bwa aluminiyumu isize plastike irashobora kugabanuka hafi kimwe cya gatatu; Ugereranije nimirasire ya aluminiyumu yose, ifite amafaranga yo gutunganya make, inzinguzingo ngufi zo gutunganya, hamwe nubushyuhe bwo gutunganya; Ibicuruzwa byarangiye ntabwo byoroshye; Abakiriya barashobora gutanga imashini zabo zo gutera inshinge kugirango bagaragaze imiterere itandukanye kandi batange ibikoresho byo kumurika. Imashini ya pulasitike ipfunyitse ya aluminiyumu ifite imikorere myiza kandi iroroshye kubahiriza amategeko yumutekano.

Imashanyarazi yumuriro mwinshi
Imirasire yumuriro mwinshi ya plastike itera imbere vuba. Imirasire yumuriro mwinshi ni ubwoko bwa radiatori yose ya pulasitike ifite ubushyuhe bwumuriro inshuro nyinshi kurenza plastiki zisanzwe, igera kuri 2-9w / mk, kandi ifite ubushyuhe bwiza nubushyuhe bwimirasire; Ubwoko bushya bwo kubika no gukwirakwiza ubushyuhe bushobora gukoreshwa ku matara atandukanye, kandi burashobora gukoreshwa cyane mumatara atandukanye ya LED kuva kuri 1W kugeza 200W.
Amashanyarazi maremare yumuriro arashobora kwihanganira AC 6000V kandi arakwiriye gukoresha amashanyarazi adahwema guhora atanga amashanyarazi hamwe numuyoboro mwinshi wumurongo uhoraho wamashanyarazi ya HVLED. Kora ibi bikoresho byo kumurika LED byoroshye gutsinda ubugenzuzi bukomeye bwumutekano nka CE, TUV, UL, nibindi. HVLED ikorera mumashanyarazi menshi (VF = 35-280VDC) hamwe numuyoboro muke (IF = 20-60mA), bigabanya ubushyuhe ibisekuruza byamasaro ya HVLED. Imashanyarazi yumuriro mwinshi irashobora gukorwa hifashishijwe imashini zitera inshinge cyangwa imashini zisohora.
Iyo bimaze gukorwa, ibicuruzwa byarangiye bifite ubworoherane buhanitse. Gutezimbere cyane umusaruro, hamwe nuburyo bworoshye muburyo bwo gushushanya, kwemerera abashushanya gukoresha neza ibitekerezo byabo. Imirasire yumuriro mwinshi wa plasitike ikozwe muri polymerisiyasi ya PLA (ibigori byibigori), yangirika rwose, ibisigisigi, kandi bitarangwamo umwanda. Igikorwa cyo kubyaza umusaruro ntigifite umwanda uremereye, nta mwanda, ndetse na gaze yuzuye, byujuje ibisabwa ku isi.
Molekile ya PLA imbere yubushyuhe bwo hejuru bwa plasitike yubushyuhe bwa pulasitike yuzuye yuzuyemo ibyuma bya nanoscale, bishobora kugenda vuba mubushyuhe bwinshi kandi byongera ingufu zumuriro. Ubuzima bwabwo buruta ubw'ibikoresho byo gukwirakwiza ubushyuhe bw'ibyuma. Ubushyuhe bwo hejuru bwa plasitike yubushyuhe burashobora kwihanganira ubushyuhe bwinshi kandi ntibucika cyangwa ngo buhindure amasaha atanu kuri 150 ℃. Iyo ushyizwe hamwe numuvuduko mwinshi wumurongo uhoraho wa disiki ya IC Drive, ntibisaba ubushobozi bwa electrolytike cyangwa inductors nini cyane, bizamura cyane ubuzima bwamatara ya LED. Nibisubizo bidasanzwe bitanga amashanyarazi hamwe nibikorwa byiza kandi bihendutse. By'umwihariko bikwiranye no gukoresha imiyoboro ya fluorescent n'amatara acukura cyane.
Imirasire ya plasitike yumuriro mwinshi irashobora gushushanywa hamwe namababa menshi yubushyuhe bwo gukwirakwiza ubushyuhe, bushobora gukorwa cyane kugirango hagabanuke kwaguka kwinshi. Iyo amababa yo gukwirakwiza ubushyuhe akora, ahita akora convection kugirango akwirakwize ubushyuhe, bikavamo ingaruka nziza zo gukwirakwiza ubushyuhe. Ubushyuhe bw'amasaro ya LED bwimurirwa mu ibaba ryogukwirakwiza ubushyuhe binyuze muri plastiki yumuriro mwinshi, kandi bigahita bikwirakwizwa binyuze mu kirere no mu mirasire y’ubutaka.
Imirasire ya plasitike yumuriro mwinshi ifite ubucucike bworoshye kuruta aluminium. Ubucucike bwa aluminium ni 2700kg / m3, naho ubucucike bwa plastike ni 1420kg / m3, hafi kimwe cya kabiri cya aluminium. Kubwibyo, kumirasire yuburyo bumwe, uburemere bwimirasire ya plastike ni 1/2 cya aluminium. Kandi gutunganya biroroshye, kandi uburyo bwayo bwo kubumba bushobora kugabanywa na 20-50%, ibyo nabyo bigabanya ikiguzi cyingufu.