Njengamanje, inkinga enkulu yezobuchwepheshe yeUkukhanyisa kwe-LEDwukuqeda ukushisa. Ukushisa okungekuhle kuholele ekunikezeni amandla okushayela kwe-LED kanye ne-electrolytic capacitor ekubeni ibhodi elifushane lokuthuthukiswa okuqhubekayo kokukhanyisa kwe-LED, nesizathu sokuguga ngaphambi kwesikhathi komthombo wokukhanya we-LED.

Kuhlelo lokukhanyisa kusetshenziswa imithombo yokukhanya ye-LV LED, ngenxa yomthombo wokukhanya we-LED osebenza ku-voltage ephansi (VF = 3.2V) kanye namanje aphezulu (IF=300-700mA), isizukulwane sokushisa sinzima. Izibani zokukhanyisa zendabuko zinendawo elinganiselwe, futhi amasinki amancane okushisa anzima ukukhipha ukushisa ngokushesha. Naphezu kokwamukela izikimu zokupholisa ezihlukahlukene, imiphumela ayizange igculise, ibe inkinga engaxazululekiIzibani ze-LED. Sihlala silwela ukuthola izinto ezishibhile ezishibhile ezilula ukuzisebenzisa, ezinokuhanjiswa okuhle kwe-thermal.

Njengamanje, cishe u-30% wamandla kagesi wemithombo yokukhanya ye-LED aguqulwa abe amandla okukhanya ngemva kokukhanyisa, kuyilapho amanye aguqulwa abe amandla ashisayo. Ngakho-ke, ukuthumela amandla amaningi ashisayo ngokushesha ngangokunokwenzeka kuwubuchwepheshe obuyinhloko ekwakhiweni kwesakhiwo sezinto zokukhanyisa izibani ze-LED. Amandla ashisayo adinga ukuhlakazwa ngokuqhutshwa kwe-thermal, i-convection, kanye nemisebe. Kuphela ngokuthumela ukushisa ngokushesha ngangokunokwenzeka izinga lokushisa lomgodi ngaphakathiIsibani se-LEDkuncishiswe ngempumelelo, ukunikezwa kwamandla kuvikelwe ekusebenzeni endaweni ehlala isikhathi eside yokushisa okuphezulu, futhi ukuguga ngaphambi kwesikhathi komthombo wokukhanya we-LED okubangelwa ukusebenza kwesikhathi eside kwezinga lokushisa eliphezulu kugwenywe.

Izindlela zokukhipha ukushisa kwezibani ze-LED

Ngenxa yokuthi imithombo yokukhanya ye-LED ayinayo imisebe ye-infrared noma i-ultraviolet, ayinawo umsebenzi wokukhipha ukushisa okunemisebe. Indlela yokukhipha ukushisa yezibani ze-LED ingatholwa kuphela kumasinki okushisa ahlanganiswe eduze namapuleti e-LED yobuhlalu. I-radiator kufanele ibe nemisebenzi yokudlulisa ukushisa, i-heat convection, kanye nemisebe yokushisa.

Noma iyiphi irediyetha, ngaphezu kokukwazi ukudlulisa ngokushesha ukushisa kusuka emthonjeni wokushisa kuya phezulu kurediyetha, ngokuyinhloko incike ku-convection kanye nemisebe ukuze ikhiphe ukushisa emoyeni. Ukuqhutshwa kokushisa kuxazulula kuphela indlela yokudlulisa ukushisa, kuyilapho i-thermal convection ingumsebenzi oyinhloko we-radiator. Ukusebenza kokukhishwa kokushisa kunqunywa ikakhulukazi indawo yokukhipha ukushisa, umumo, namandla okuhambisa kwemvelo, kuyilapho imisebe eshisayo ingumsebenzi osizayo.

Ngokuvamile, uma ibanga elisuka emthonjeni wokushisa liye endaweni ye-radiator lingaphansi kuka-5mm, inqobo nje uma ukuqhutshwa kwe-thermal kwempahla kungaphezu kuka-5, ukushisa kwayo kungathunyelwa ngaphandle, futhi ukuchithwa kokushisa okusele kufanele kubuswe ukuqhutshwa kwe-thermal. .

Imithombo eminingi yokukhanyisa kwe-LED isasebenzisa i-voltage ephansi (VF=3.2V) kanye nobuhlalu be-LED obuphezulu bamanje (IF=200-700mA). Ngenxa yokushisa okuphezulu ngesikhathi sokusebenza, ama-alloys e-aluminium ane-conductivity ephezulu yokushisa kufanele asetshenziswe. Ngokuvamile kunamaradiyetha e-aluminium e-die-cast, amaradiyetha e-aluminium extruded, namaradiyetha e-aluminium anesitembu. Irediyetha ye-aluminium ye-Die cast iwubuchwepheshe bezingxenye zokuphonsa ingcindezi, okubandakanya ukuthela ingxube ye-aluminium ye-zinc yethusi echwebeni lokuphakelayo lomshini wokuphonsa i-die cast, bese uyiphonsa esikhunjini esiklanywe kusengaphambili esinomumo onqunywe kusengaphambili.

Irediyetha ye-aluminium efayo

Izindleko zokukhiqiza ziyalawuleka, futhi iphiko lokukhipha ukushisa alikwazi ukwenziwa libe mncane, okwenza kube nzima ukukhulisa indawo yokukhipha ukushisa. Izinto ezisetshenziswa kakhulu zokusakaza nge-die-cast kuma-radiator amalambu e-LED yi-ADC10 ne-ADC12.

Irediyetha ye-aluminium enwetshiwe

I-aluminium ewuketshezi idluliselwa ekubunjweni ngesikhunta esingaguquki, bese ibha igaywa ngomshini futhi isikwe ibe sesimweni esifiswayo sikasinki wokushisa, okuholela ezindlekweni zokucubungula eziphakeme esigabeni sakamuva. Iphiko lokukhipha ukushisa lingenziwa libe mncane kakhulu, ngokunwetshwa okuphezulu kwendawo yokushisa ukushisa. Uma iphiko lokukhipha ukushisa lisebenza, lizenzela ngokuzenzakalelayo ukudluliswa komoya ukuze kusabalalise ukushisa, futhi umphumela wokukhipha ukushisa muhle. Izinto ezisetshenziswa kakhulu yi-AL6061 kanye ne-AL6063.

Irediyetha ye-aluminium enesitembu

Kuyinqubo yokugxiviza nokuphakamisa amapuleti ensimbi ne-aluminium alloy ngokusebenzisa isibhakela nesikhunta ukuze kwakhiwe irediyetha emise okwenkomishi. I-radiator enesitembu ine-circumference yangaphakathi nangaphandle ebushelelezi, futhi indawo yokushisa ukushisa ilinganiselwe ngenxa yokuntuleka kwamaphiko. Izinto ezisetshenziswa kakhulu ze-aluminium alloy ziyi-5052, 6061, kanye ne-6063. Izingxenye ezinesitembu zinekhwalithi ephansi kanye nokusetshenziswa kwezinto eziphezulu, okuzenza zibe yisixazululo esingabizi kakhulu.

I-thermal conductivity yama-radiators e-aluminium alloy ilungile futhi ifanele ukushintshwa okukodwa kwamandla wamanje. Ukuze uthole ugesi ongahlukanisi ongahlukanisi wamanje, kuyadingeka ukuhlukanisa i-AC ne-DC, amandla kagesi aphezulu kanye ne-low-voltage ngomklamo wesakhiwo wezinto zokukhanyisa ukuze kudlule isitifiketi se-CE noma se-UL.

I-radiator ye-aluminium ehlanganiswe ngepulasitiki

Iwusinki wokushisa onegobolondo lepulasitiki elibambayo elishisayo kanye nomgogodla we-aluminium. Ipulasitiki yokushisa eshisayo kanye ne-aluminium yokukhipha ukushisa kwakhiwa ngesikhathi esisodwa emshinini wokubumba umjovo, futhi umgogodla wokulahla ukushisa kwe-aluminium usetshenziswa njengengxenye eshunyekiwe edinga ukucutshungulwa kwangaphambili komshini. Ukushisa kobuhlalu besibani se-LED kudluliselwa ngokushesha kupulasitiki oshisayo oshisayo ngokusebenzisa umgogodla wokushisa we-aluminium. Ipulasitiki ye-thermal conductive isebenzisa amaphiko ayo amaningi ukuze yenze ukuchithwa kokushisa kwe-air convection, futhi isebenzisa indawo yayo yokushisa ukuze ikhiphe okunye ukushisa.

Amaradiyetha e-aluminium enziwe ngepulasitiki ngokuvamile asebenzisa imibala yoqobo yepulasitiki eshisayo, emhlophe nemnyama. Ama-radiator epulasitiki amnyama epulasitiki enziwe ngepulasitiki anomphumela ongcono wokukhipha imisebe nokushisa. Ipulasitiki ye-thermal conductive iwuhlobo lwempahla ye-thermoplastic. I-fluidity, ukuminyana, ukuqina namandla ezinto ezibonakalayo kulula ukubumba umjovo. Inokumelana okuhle nemijikelezo yokushaqeka okubandayo kanye nokushisa nokusebenza okuhle kakhulu kokufakwa. I-coefficient ye-radiation ye-thermal conductive plastic iphakeme kunaleyo yezinto ezijwayelekile zensimbi

Ukuminyana kwepulasitiki ye-thermal conductive ingaphansi ngo-40% kunaleyo ye-aluminium ye-die-cast kanye ne-ceramics, futhi kuma-radiator anomumo ofanayo, isisindo se-aluminium ehlanganiswe ngepulasitiki singancishiswa cishe ingxenye eyodwa kwezintathu; Uma kuqhathaniswa nawo wonke ama-radiators e-aluminium, izindleko zokucubungula ziphansi, umjikelezo wokucubungula ufushane, futhi izinga lokushisa lokucubungula liphansi; Umkhiqizo oqediwe awuntekenteke; Umshini wokubumba umjovo wekhasimende ungasetshenziselwa ukuklama ukubukeka okuhlukene kanye nokukhiqizwa kwezinto zokukhanyisa. I-radiator ye-aluminium ehlanganiswe nepulasitiki inokusebenza okuhle kokuhlukanisa futhi kulula ukuyidlula imithetho yezokuphepha.

I-radiator yepulasitiki ene-thermal conductivity ephezulu

Ama-radiators epulasitiki e-thermal conductivity aphezulu athuthuke ngokushesha muva nje. Ama-radiator epulasitiki ane-thermal conductivity ephezulu ayiwo wonke ama-radiator epulasitiki, ane-thermal conductivity izikhathi eziphindwe kayishumi ngaphezu kwamapulasitiki avamile, afinyelela ku-2-9w/mk, namandla okuqhuba ukushisa okuhle kakhulu kanye nekhono lemisebe; Uhlobo olusha lwe-insulation kanye nezinto zokushisa ezingasetshenziswa ezibanini zamandla ahlukahlukene, futhi zingasetshenziswa kabanzi kumalambu e-LED ahlukahlukene asukela ku-1W kuya ku-200W.

Ipulasitiki ye-thermal conductivity ephezulu ingamelana ne-voltage efika ku-6000V AC, iyenze ifanelekele ukusebenzisa amandla amanje angahlukanisi akhona kanye nolayini ophezulu we-high-voltage ongaguquki wamandla kagesi nge-HVLED. Yenza lolu hlobo lwesibani se-LED kube lula ukwedlula imithetho eqinile yokuphepha efana ne-CE, TUV, UL, njll. I-HVLED isebenza nge-voltage ephezulu (VF=35-280VDC) kanye neyamanje ephansi (IF=20-60mA), enciphisa ukushisisa ipuleti lobuhlalu be-HVLED. Ama-radiators epulasitiki e-thermal conductivity aphezulu angasetshenziswa ngemishini yokubumba yendabuko kanye ne-extrusion.

Uma usuwenziwe, umkhiqizo ophelile unokushelela okuphezulu. Ithuthukisa ngokuphawulekayo ukukhiqiza, ngokuguquguquka okuphezulu ekwakhiweni kwesitayela, ingasebenzisa ngokugcwele ifilosofi yokuklama yomklami. Irediyetha yepulasitiki ene-thermal conductivity ephezulu yenziwe nge-PLA (corn starch) polymerization, yonakala ngokuphelele, ayinazinsalela, futhi ayingcolisi amakhemikhali. Inqubo yokukhiqiza ayinakho ukungcola kwensimbi esindayo, akukho ndle, futhi akukho gesi ephumayo, ehlangabezana nezidingo zemvelo zomhlaba wonke.

Ama-molecule e-PLA angaphakathi kwe-thermal conductivity plastic dissipation body body dissipation agcwele ama-ion metal nanoscale, angahamba ngokushesha emazingeni okushisa aphezulu futhi andise amandla emisebe eshisayo. Ubungqabavu bayo bungaphezu kobemizimba yensimbi ekhipha ukushisa. Irediyetha yepulasitiki ene-thermal conductivity ephakeme imelana nezinga lokushisa eliphezulu, futhi ayiphuki noma yonakale amahora amahlanu ku-150 ℃. Ngokusetshenziswa kwe-high-voltage linear ehlala njalo ye-IC drive scheme, ayidingi i-electrolytic capacitor kanye ne-inductance enkulu, ithuthukisa kakhulu impilo yesibani sonke se-LED. Uhlelo lokuphakelwa kukagesi olungahlukanisiwe lusebenza kahle kakhulu kanye nezindleko eziphansi. Ikakhulukazi kulungele ukusetshenziswa kwamashubhu e-fluorescent kanye nezibani ezinamandla ezimbonini nasezimayini.

Ama-radiator epulasitiki ane-thermal conductivity ephezulu angaklanywa ngokunemba okuningi kwamaphiko okushisa ukushisa, angenziwa abe mncane kakhulu futhi abe nokunwetshwa okuphezulu kwendawo yokukhipha ukushisa. Lapho ama-fins okukhipha ukushisa esebenza, enza ngokuzenzakalelayo ukuguquguquka komoya ukuze asakaze ukushisa, okuholela kumphumela omuhle wokukhipha ukushisa. Ukushisa kobuhlalu besibani se-LED kudluliselwa ngqo ophikweni lokukhipha ukushisa ngepulasitiki ephezulu ye-thermal conductivity, futhi kuhlakazwe ngokushesha nge-convection yomoya kanye nemisebe engaphezulu.

Ama-radiator epulasitiki asebenza ngokushisa okuphezulu anokuqina okukhanyayo kune-aluminium. Ukuminyana kwe-aluminium ngu-2700kg/m3, kanti ukuminyana kwepulasitiki kungu-1420kg/m3, okungaba ingxenye ye-aluminium. Ngakho-ke, kuma-radiator of shape efanayo, isisindo sama-radiator epulasitiki singu-1/2 kuphela we-aluminium. Ngaphezu kwalokho, ukucubungula kulula, futhi umjikelezo wokwakha ungafinyezwa ngo-20-50%, obuye unciphise amandla okushayela ezindleko.