Uyisombulula Njani iNgxaki yokuLahlwa koBubushushu kwi-UV LED?

Xa umthombo wokukhanya we-LED uvuliwe, indawo yokudibanisa i-P-N ngaphakathi kwe-chip iqala ukusebenza, ivelise kwaye iqokelele ubushushu. Nanini na xa urhulumente efezekisa imeko ezinzileyo, ubushushu bubizwa ngokuba bubushushu besiphambuka.

Kwakhona, ngenxa yokuba i-chip ivaliwe, ukushisa kwe-semiconductor akukwazi ukukhangela ngokuthe ngqo ngexesha lenkqubo yokulinganisa. Ngenxa yoko, ukufudumala kwe-pin conductor ngokuqhelekileyo kusetyenziselwa ukulinganisa umehluko weqondo lokushisa lomthombo wokukhanya ngokungangqalanga. Okukhona usezantsi ubushushu bomthombo wokukhanya, kokukhona ukuphelisa ubushushu bungcono.

Ngokuqhelekileyo, izinto ezikhethiweyo kwi-semiconductor yomthombo wokukhanya kunye nesimo sokupakisha esithathayo sinefuthe elithe ngqo ekutshitshisweni kobushushu bomthombo wokukhanya kwe-LED.

Izinto ezisetyenziselwa ukukhanya kwe-LED zifumana ukuchasana kombane ngaphakathi nangaphandle. Ubukhulu bala maxabiso obuxhakaxhaka bokumelana bubonakalisa amandla omthombo wokukhanya wokuphelisa ubushushu ukuya kumlinganiselo othile.

Ingxaki Yokuchithwa Ubushushu

Ukutshatyalaliswa kobushushu luhlobo lokutshatyalaliswa kwamandla (ukudluliselwa kwamandla). Igama elithi "ukuchithwa kwamandla" libhekisa kumandla achithwayo ngenxa yomahluko wobushushu kunye nokungasebenzi kakuhle.

Ubushushu buchithwa ngeenkqubo ezintathu:

·  I-Convection yinkqubo yobushushu ngokuqukuqela ulwelo. I-oven yokuhambisa, umzekelo, isebenzisa umoya (ulwelo olushushu, oluhambayo) ukuhambisa ubushushu.

·  Ukuqhuba yinkqubo apho ubushushu bukhutshwa kuyo yonke imathiriyeli enye kwaye mhlawumbi kwenye into enokudibana nento eshushu. I-cooktop yombane etshiswa ngokuxhathisa kombane ngumzekelo omnye.

·  Imitha yinkqubo apho ubushushu busasazwa khona kusetyenziswa amaza ombane. I-oven microwave ngumzekelo wokutshatyalaliswa kobushushu.

·  Ukusebenzisa isigqubuthelo esifanelekileyo kwisicelo kunciphisa ilahleko yobushushu kunye neendleko zalo ngelixa kukhulisa ukusebenza kakuhle kunye nokhuseleko.

Indlela yokusombulula ingxaki yokutshatyalaliswa kobushushu

Ukubamba iqondo eliphezulu lomthombo wokukhanya we-UV-LED ohlala ungaphantsi komda wokubaluleka kwetshiphu ixesha elide kwiqondo lobushushu le-ambient, kubalulekile ukuphumeza ukusebenza okukhuselekileyo nokuthembeka kwe-thermal kumthombo wokukhanya we-UV-LED. Ulawulo lobushushu lomthombo wokukhanya we-UV-LED lunokwahlulwa lube ngamakhonkco amabini. Izinto zokupakisha i-Chip kunye neenkqubo zokupakisha ziphuculwa kwicandelo lokuvelisa umthombo wokukhanya ukuphucula ukusebenza kakuhle kokutshatyalaliswa kobushushu.

Nangona kunjalo, ukongeza iiradiator zangaphandle kwizicelo zobunjineli kunokuphucula kakhulu ukusebenza kobushushu. Ulwakhiwo lweradiyetha luyahlukahlukana, kubandakanywa uhlobo lwe-fin, uhlobo lokutshintshana kobushushu, uhlobo lweplate yokwabelana ngamandla, kunye nohlobo lwe-micro-grooves, phakathi kwabanye.

Ukufumana ubushushu obukhulu bomthombo wokukhanya we-UV-LED ohlala ungaphantsi komda wokubaluleka kwe-chip ixesha elide phantsi kobushushu be-ambient, kubalulekile ukudibanisa ulawulo olukhuselekileyo noluthembekileyo lomthombo wokukhanya kwe-Ultraviolet.

Uyilo lwe-UV-LED lomthombo wokukhanya wokutshatyalaliswa kobushushu lunokwahlulwa lube kwinqanaba le-chip, inqanaba lokupakisha, kunye nenqanaba lenkqubo. Umthombo wokukhanya kwinkqubo yokuvelisa imisela ezimbini zokuqala. Ugqaliselo lwesifundo seli phepha kumbandela wokuphelisa ubushushu, oko kukuthi, ukukhulisa ulwakhiwo lomthombo wokukhanya oncedisayo we-Ultraviolet source.

Yintoni ubushushu be-junction ye-LED kwaye kutheni ibalulekile?

Ubushushu beJunction kwindawo apho isidanga se-LED sidibana nezinto ezixhonywe kuyo. Esi sidibaniso sikholisa ukuba nobona bushushu besixhobo sikhulu, senza ixabiso laso libe sisalathisi esilungileyo sokutshabalalisa ubushushu. Imijelo yokufudumala esebenzayo yakhiwe kwiipakethi ze-LED zanamhlanje ukuhambisa ubushushu ukusuka kwindawo yokuhlangana ukuya kwindawo ye-solder. Ukusebenzisana kwephakheji ye-LED kunye ne-PCB okanye i-heatsink eyahlukileyo kulapho udibaniso lwe-solder lukhoyo.

Ukuxhatshazwa kwangaphakathi kwe-thermal ye-LED kusebenza njengomlinganiselo weendlela zokushisa zangaphakathi. Ukuthetha ngokufudumeleyo, umgangatho we-LED uyanda ngokuncipha kobushushu bangaphakathi. Ixabiso lomthamo wobushushu kufuneka lifikelelwe yinjineli yoyilo ngelixa lidala i-LED kwindawo yolawulo lwe-thermal. Abasombululi be-CFD baya kusebenzisa eli nani ukubala ngokuchanekileyo ubushushu be-LED kwaye bajonge ukuba isixhobo sidlule kumda ongaphezulu ocetyiswe ngumenzi. Amaqondo obushushu okuhlangana kwii-LED zangoku afikeleleka 100°C okanye ngaphezulu. Ixabiso layo lichaphazeleka kuluhlu lweqondo lokushisa, izinga lokutshintshwa kobushushu phakathi kwesekethe ye-LED kunye nendawo ejikelezileyo, kunye nokusetyenziswa kwamandla e-chip.

Izinto zoYilo lweThermal

Nayiphi na ibhalbhu ye-LED kufuneka yenziwe ukunciphisa uzinzo oluphezulu lwe-thermal ukusuka kwi-LED ukuya emoyeni ojikelezayo ukuze kugcinwe ii-LED zipholile. I-Conduction, convective, kunye ne-thermal radiation zezona Ezimbini  iintlobo zokutshatyalaliswa kobushushu ekufuneka zithathelwe ingqalelo kwaye ziphuculwe ngexesha loyilo lonke lwenkqubo yoyilo.

1. Ububanzi be-LED kunye noqwalaselo

Ukwenza uyilo oluncinci lwe-LED, abaqulunqi bahlala benqwenela ukunciphisa umgama phakathi kweLed kwiPCB. Kodwa oku kuya kubangela uxinano lwamandla aphezulu obushushu, okuya kuphucula ubushushu bee-LEDs.

Abavelisi be-UV LED zinika rhoqo umgama ocetyisiweyo phakathi kwe-LED kwaye uchaze ukunyuka kwamaqondo obushushu anokulindelwa xa loo mgama ufinyezwa ngesixa esithile. Uphononongo kuyilo lwebhodi ye-LED lubonise ukuba i-homogeneous kunye ne-symmetrical chip amalungiselelo abonelela ngomlinganiselo ofanayo wemveliso yobushushu nokuba ixande, i-hexagon, okanye isetyhula.

2. Ukukhetha iModyuli ye-LED

Ukupakishwa ngokuthe ngqo kwi-line (DIP) ii-LED kunye nezona chips ezininzi ezintsha kwiibhodi (MCOB) LEDs zimbalwa kwiindidi ezininzi ezahlukeneyo zee-LED ezikhoyo. Ii-LED ze-DIP zisetyenziswa kakhulu kwiimpawu kunye nokuboniswa kwizixhobo zasekhaya. Zahlulwa ngokwemo yazo emile njengembumbulu.

Ii-LED ze-SMD zi-square semiconductors ezinokuvelisa ukukhanya phezu kwayo yonke i-RGB spectrum.

Apho unokuthenga khona umgangatho ophezulu we-UV LED

Umenzi oyilayo kunye namava, UZhuhai Tianhui Electronic Co ., Ltd. igxile kwii-LED ze-UV, iiprojekthi ezinkulu, ukupakishwa kwe-UV ye-LED, kunye nemveliso yesekethe edibeneyo yokukhanya okuphezulu, ukusebenza kakuhle okuphezulu, ukukhanya okukhanyayo, kunye nobomi obude. Njengomnye ohamba phambili ngokugqithisileyo Abavelisi abakhokela  e-China, sibeka i-premium enkulu ekufezekiseni iimfuno zabathengi bethu kwaye sizinikele ekunikezeni inkonzo ephezulu. Sibonelela abathengi ngokugqwesileyo Isisombululo se-UV LED , iimveliso, kunye neenkonzo. Sibonelela nge-UVA, UVB, kunye neemveliso ze-UVC ezinobude obufutshane ukuya kumade amaza kunye nezizeleyo Uv ikhokelela Iimpawu ze-LED ezinamandla aphantsi ukuya phezulu. Omnye wabavelisi be-UV be-LED abaphezulu, i-Zhuhai Tianhui Electronic Co., Ltd., igxile kwi-UVC, UVB, kunye ne-UVA yokubulala iintsholongwane kunye nokuvala inzala. Iimpahla zisetyenziswa ngokubanzi.