Ungayixazulula Kanjani Inkinga Yokukhipha Ukushisa Kwe-UV LED?

Lapho umthombo wokukhanya we-LED uvuliwe, indawo yokuxhuma ye-P-N ngaphakathi kwe-chip iqala ukusebenza, ikhiqize futhi iqongelele ukushisa. Noma nini lapho isimo sifinyelela isimo esizinzile, izinga lokushisa libizwa ngokuthi izinga lokushisa lokuhlangana.

Futhi, ngenxa yokuthi i-chip ivaliwe, ukushisa kwe-semiconductor akukwazi ukuhlolwa ngokuqondile phakathi nenqubo yokulinganisa. Ngenxa yalokho, ukufudumala kwekhondatha yephinikhodi kuvame ukusetshenziselwa ukunquma umehluko wezinga lokushisa lomthombo wokukhanya ngokungaqondile. Lapho izinga lokushisa liphansi lokuhlangana komthombo wokukhanya, kuba ngcono ukuqeda ukushisa kwawo.

Ngokuvamile, into ekhethelwe isemiconductor yomthombo wokukhanya kanye nesimo sokupakisha esisithathayo sinomthelela oqondile ekulahlekeni kokushisa komthombo wokukhanya we-LED.

Izinto ezisetshenziselwa umthombo wokukhanya we-LED zithola ukumelana okuthile kukagesi ngaphakathi nangaphandle. Ubukhulu balawa mavelu okumelana nokukhanya bubonisa amandla okukhipha ukushisa omthombo wokukhanya ngokwezinga elithile.

Inkinga Yokukhipha Ukushisa

Ukushisa kokushisa kuwuhlobo lokuchithwa kwamandla (ukudluliswa kwamandla). Igama elithi "energy dissipation" lisho amandla amoshayo ngenxa yokuhluka kwezinga lokushisa nokungasebenzi kahle.

Ukushisa kukhishwa ngezinqubo ezintathu:

·  I-Convection inqubo yokushisa ngoketshezi olugelezayo. I-ovini yokuhambisa, isibonelo, isebenzisa umoya (uketshezi olushisayo, olunyakazayo) ukudlulisa ukushisa.

·  Ukuqhuba inqubo lapho ukushisa kukhishwa khona kuyo yonke into futhi mhlawumbe kwenye into engathinta into eshisisayo. I-cooktop kagesi eshisisa ukumelana nogesi yisibonelo esisodwa.

·  Imisebe inqubo lapho ukushisa kuhlakazwa khona kusetshenziswa amaza kagesi. Ihhavini ye-microwave iyisibonelo sokuchithwa kokushisa.

·  Ukusebenzisa i-insulation efanele yohlelo kunciphisa ukulahlekelwa ukushisa kanye nezindleko zakho ngenkathi kuthuthukisa ukusebenza kahle nokuphepha.

Indlela yokuxazulula inkinga yokushisa ukushisa

Ukuze uthwebule izinga eliphezulu lomthombo wokukhanya we-UV-LED elihlala lingaphansi komkhawulo wokubaluleka we-chip isikhathi esinwetshiwe kuzinga lokushisa elizungezile, kubalulekile ukusebenzisa ukusebenza okushisayo okuphephile nokunokwethenjelwa kumthombo wokukhanya we-UV-LED. Ukulawulwa komthombo wokukhanya wokukhanya kwe-UV-LED kungase kuhlukaniswe izixhumanisi ezimbili. Izinto zokupakisha ze-chip nezinqubo zokupakisha ziyathuthukiswa emkhakheni wokukhiqiza umthombo wokukhanya ukuze kuthuthukiswe ukusebenza kahle kokukhipha ukushisa.

Kodwa-ke, ukwengeza ama-radiator angaphandle ezinhlelweni zobunjiniyela kungathuthukisa kakhulu ukusebenza kokukhipha ukushisa. Isakhiwo serediyetha siyahlukahluka, okuhlanganisa uhlobo lwe-fin, uhlobo lokushintshanisa ukushisa, uhlobo lwepuleti lokwabelana ngamandla, nohlobo lwama-micro-grooves, phakathi kokunye.

Ukuze uthole ukushisa okuphezulu komthombo wokukhanya we-UV-LED okuhlala kungaphansi komkhawulo wokubaluleka we-chip isikhathi eside ngaphansi kwezinga lokushisa elizungezile, kubalulekile ukuhlanganisa ukulawulwa kwezinga lokushisa okuphephile nokunokwethenjelwa kumthombo wokukhanya we-Ultraviolet.

Idizayini yokushisa yomthombo wokukhanya we-UV-LED ingahlukaniswa ibe ileveli ye-chip, ileveli yokupakisha, kanye nezinga lesistimu. Umthombo wokukhanya ohlelweni lokukhiqiza unquma ezimbili zokuqala. Ocwaningweni lwaleli phepha okugxilwe kulo odabeni lokushabalalisa ukushisa kwesikimu, okungukuthi, ukuthuthukisa ukwakhiwa kosinki wokushisa osizayo womthombo wokukhanya we-Ultraviolet.

Iyini izinga lokushisa le-junction ye-LED futhi kungani ibalulekile?

Izinga lokushisa lokuhlangana endaweni lapho isibonisi se-LED sihlangana nezinto ezibekwe kuso. Lokhu kuhlangana kuvamise ukuba nezinga lokushisa elikhulu kakhulu ledivayisi, okwenza inani layo libe inkomba enhle yokusebenza kahle kokukhipha ukushisa. Iziteshi zokushisa ezivumayo zakhelwe kumaphakheji esimanje e-LED ukuze kudluliswe ukushisa kusuka ezimpambanweni zomgwaqo kuya endaweni ye-solder. Ukusebenzisana kwephakeji ye-LED ne-PCB noma i-heatsink ehlukile yilapho uxhumano lwe-solder lukhona.

Ukumelana nokushisa kwangaphakathi kwe-LED kusebenza njengesilinganiso sokusebenza kahle kwemizila yangaphakathi yokushisa. Uma sikhuluma ngokufudumala, ikhwalithi ye-LED ikhuphuka ngokuncipha kwezinga lokushisa langaphakathi. Inani lomthamo wokushisa kufanele lifinyelelwe unjiniyela wokuklama ngenkathi edala indawo ye-LED ngokombono wokuphatha okushisayo. Izixazululi ze-CFD zizosebenzisa lesi sibalo ukuze zibale ngokunembile izinga lokushisa le-LED futhi zihlole ukuthi idivayisi yeqe yini ngaphezu komkhawulo ophezulu onconywe ngumkhiqizi. Amazinga okushisa okuhlanganisa kuma-LED anamuhla avame ukufika 100°C noma ngaphezulu. Inani layo lithintwa ibanga lokushisa, izinga lokudlulisa ukushisa phakathi kwesekethe ye-LED nendawo eyizungezile, kanye nokusetshenziswa kwamandla kwe-chip.

I-Thermal Design Factors

Noma iyiphi i-bulb ye-LED kufanele yenziwe ukuze kwehliswe ukuzinza okuphezulu kokushisa ukusuka ku-LED kuya emoyeni ozungezile ukuze kugcinwe ama-LED epholile. I-Conduction, convective, kanye nemisebe eshisayo yiyona Kabili  izinhlobo zokukhipha ukushisa okufanele zicatshangelwe futhi zithuthukiswe phakathi nayo yonke inqubo yokuklama kwesakhiwo.

1. Ububanzi be-LED nokucushwa

Ukwakha imiklamo emincane ye-LED, abaklami bavame ukufisa ukufinyeza ibanga phakathi kwe-Led ku-PCB. Kodwa lokhu kuzoholela ekukhuleni kwamandla okushisa aphezulu, okuzothuthukisa ukushisa kwama-LED.

Abakhiqizi be-UV LED bavame ukunikeza ibanga eliphakanyisiwe phakathi kwama-LED futhi ucacise ukunyuka kwezinga lokushisa okungalindelwe uma lelo banga lifinyezwa ngenani elithile. Ucwaningo lwesakhiwo sebhodi le-LED luveze ukuthi ukuhlelwa kwe-chip ye-homogeneous kanye ne-symmetrical chip inikeza inani elifanayo lokukhipha ukushisa noma ngabe ingunxande, i-hexagon, noma iyindilinga.

2. Ukukhetha Module LED

Ama-LED we-Direct in-line packaging (DIP) kanye nama-chips amaningi amasha kumabhodi (MCOB) LEDs ayingcosana yezinhlobo eziningi ezahlukene zama-LED atholakalayo. Ama-LED e-DIP asetshenziswa kakhulu njengezimpawu nokuboniswa kugajethi yasekhaya. Ahlukaniswa ngesimo sawo esimise okwenhlamvu.

Ama-LED ama-SMD angama-semiconductors ayisikwele angakhiqiza ukukhanya phezu kwawo wonke ama-RGB spectrum.

Ungathenga kuphi i-UV LED yekhwalithi ephezulu

Umkhiqizi onobuhlakani nonolwazi, UZhuhai Tianhui Electronic Co ., Ltd. igxile kuma-UV LED, amaphrojekthi amakhulu, ukupakishwa kwe-UV LED, kanye nokukhiqizwa kwesekethe edidiyelwe yokukhanya okuphezulu, ukusebenza kahle okuphezulu, ukukhanya okukhanyayo, nempilo ende. Njengoba omunye ehamba phambili ngokweqile Abakhiqizi be-uv  e-China, sibeka imali enkulu kakhulu ekuhlangabezaneni nezidingo zamakhasimende ethu futhi sizinikele ekunikezeni isevisi ephakeme. Sinikeza abathengi okuhle kakhulu Isixazululo se-UV LED , imikhiqizo, namasevisi. Sinikezela ngemikhiqizo ye-UVA, UVB, kanye ne-UVC enamaza wamaza amafushane kuya kumade futhi agcwele Uv ehola i-diode Imininingwane ye-LED enamandla aphansi kuya phezulu. Omunye wabakhiqizi abaphezulu be-UV LED, i-Zhuhai Tianhui Electronic Co., Ltd., igxile ekubulaleni amagciwane e-UVC, UVB, kanye ne-UVA. Izimpahla zisetshenziswa kakhulu.