Okwangoku, eyona ngxaki inkulu yobugcisaUkukhanya kwe-LEDkukuchitha ubushushu. Ukuchithwa kobushushu okungalunganga kuye kwakhokelela ekunikezeni amandla okuqhuba i-LED kunye ne-electrolytic capacitor ibe yibhodi emfutshane yophuhliso oluqhubekayo lokukhanyisa kwe-LED, kunye nesizathu sokuguga kwangaphambili komthombo wokukhanya we-LED.

Kwiskimu sokukhanyisa usebenzisa i-LV LED imithombo yokukhanya, ngenxa yomthombo wokukhanya we-LED osebenza kwi-voltage ephantsi (VF = 3.2V) kunye nephezulu yangoku (IF = 300-700mA), isizukulwana sokushisa sinzima. Izibane zemveli zinendawo encinci, kwaye iisinki ezincinci zobushushu kunzima ukukhupha ubushushu ngokukhawuleza. Ngaphandle kokwamkela izikimu zokupholisa ezahlukeneyo, iziphumo azizange zonelise, ibe yingxaki engenakusonjululwaIzibane ze-LED. Sisoloko sizabalazela ukufumana izinto eziphantsi kwexabiso eliphantsi lokutshatyalaliswa kobushushu ekulula ukuzisebenzisa, kunye ne-conductivity efanelekileyo ye-thermal.

Okwangoku, malunga ne-30% yamandla ombane wemithombo yokukhanya ye-LED iguqulwa ibe amandla okukhanya emva kombane, ngelixa elinye liguqulelwa kumandla obushushu. Ke ngoko, ukuthumela ngaphandle amandla amaninzi ashushu ngokukhawuleza kubuchwepheshe obuphambili kuyilo lolwakhiwo lwezibane ze-LED. Amandla e-thermal kufuneka atshatyalaliswe nge-thermal conduction, convection, kunye ne-radiation. Kuphela ngokuthumela ngaphandle ubushushu ngokukhawuleza kunokwenzeka ukuba ubushushu bomgodi ngaphakathiIsibane se-LEDkuncitshiswe ngempumelelo, unikezelo lwamandla lukhuselwe ekusebenzeni kwindawo ehlala ixesha elide lobushushu obuphezulu, kwaye ukuguga kwangaphambili komthombo wokukhanya kwe-LED okubangelwa kukusebenza kwexesha elide lobushushu obuphezulu kuphetshwe.

Iindlela zokutshatyalaliswa kobushushu kwizibane ze-LED

Ngenxa yokuba imithombo yokukhanya kwe-LED ayinayo imisebe ye-infrared okanye i-ultraviolet, ayinayo umsebenzi wokutshatyalaliswa kobushushu bokukhanya. Indlela yokuphelisa ubushushu kwizibane ze-LED inokufunyanwa kuphela ngeesinki zobushushu ezidityaniswe ngokusondeleyo neepleyiti ze-LED zentsimbi. Iradiyetha kufuneka ibe nemisebenzi yokuhambisa ubushushu, ukuhambisa ubushushu, kunye nemitha yobushushu.

Nayiphi na i-radiator, ngaphezu kokukwazi ukuhambisa ngokukhawuleza ubushushu ukusuka kumthombo wokushisa ukuya kumphezulu we-radiator, ubukhulu becala ixhomekeke kwi-convection kunye ne-radiation ukukhupha ukushisa emoyeni. Ukuqhutyelwa kokushisa kusombulula kuphela indlela yokudlulisa ukushisa, ngelixa i-thermal convection ngumsebenzi oyintloko we-radiator. Ukusebenza kokutshatyalaliswa kobushushu kumiselwa ikakhulu yindawo yokuchitha ubushushu, imilo, kunye nokuqina kwendalo yokuhambisa ubushushu, ngelixa i-thermal radiation ingumsebenzi oncedisayo kuphela.

Ngokuqhelekileyo, ukuba umgama ukusuka kumthombo wobushushu ukuya kumphezulu we-radiator ungaphantsi kwe-5mm, nje ukuba i-conductivity ye-thermal ye-thermal ingaphezulu kwe-5, ubushushu bayo bunokuthunyelwa ngaphandle, kwaye ukutshatyalaliswa kobushushu obuseleyo kufuneka kulawulwe yi-convection ye-thermal. .

Uninzi lwemithombo yokukhanyisa i-LED isasebenzisa i-voltage ephantsi (VF = 3.2V) kunye ne-high current (IF = 200-700mA) amaso e-LED. Ngenxa yokushisa okuphezulu ngexesha lokusebenza, i-aluminium alloys ene-high conductivity ye-thermal kufuneka isetyenziswe. Ngokwesiqhelo kukho iiradiyetha zealuminiyam ezidayiweyo, iiradiyetha zealuminiyam ezikhutshiweyo, kunye neeradiyetha ezinesitampu zealuminiyam. Die cast aluminiyam iradiyetha yitekhnoloji yeendawo zokuphosa uxinzelelo, ezibandakanya ukugalela ulwelo lwe-zinc yobhedu ingxubevange ye-aluminiyam kwizibuko lokutya lomatshini wokuphosa, kwaye emva koko uyijule kumngundo oyilwe kwangaphambili onemilo emiswe kwangaphambili.

Die cast aluminiyam radiator

Iindleko zokuvelisa ziyakwazi ukulawulwa, kwaye iphiko lokutshatyalaliswa kobushushu alikwazi ukwenziwa lincinci, okwenza kube nzima ukunyusa indawo yokushisa ukushisa. Izinto ezisetyenziswa ngokuqhelekileyo zokulahla izibane zesibane se-LED yi-ADC10 kunye ne-ADC12.

Iradiyetha yealuminiyam eyongeziweyo

I-aluminiyam elulwelo igqithiselwa kwimilo ngokungunda okusisigxina, kwaye emva koko ibha yenziwe ngomatshini kwaye isikwe kwimilo efunwayo ye-sink yobushushu, okukhokelela kwiindleko eziphezulu zokulungisa kwisigaba samva. Iphiko lokutshatyalaliswa kobushushu lingenziwa lincinci kakhulu, kunye nokwandiswa okukhulu kwendawo yokutshatyalaliswa kobushushu. Xa iphiko lokuphelisa ubushushu lisebenza, lizenzela ngokuzenzekelayo ukuhanjiswa komoya ukusasaza ubushushu, kwaye isiphumo sokuphelisa ubushushu silungile. Izinto ezisetyenziswa ngokuqhelekileyo ziyi-AL6061 kunye ne-AL6063.

Iradiyetha yealuminiyam enesitampu

Yinkqubo yokunyathela kunye nokuphakamisa iipleyiti zentsimbi kunye ne-aluminium alloy ngokusebenzisa i-punch kunye nokungunda ukwenza ikomityi yeradiyetha. I-radiator enesitampu ine-circumference yangaphakathi nangaphandle, kwaye indawo yokutshatyalaliswa kobushushu iyancipha ngenxa yokungabikho kwamaphiko. Izinto ezisetyenziswa ngokuqhelekileyo ze-aluminium alloy ziyi-5052, i-6061, kunye ne-6063. Amalungu anesitampu anomgangatho ophantsi kunye nokusetyenziswa kwezinto eziphezulu, okwenza kube isisombululo esiphantsi.

I-thermal conductivity ye-radiator ye-aluminium alloy ilungile kwaye ifanelekile ukutshintshwa okuzimeleyo rhoqo kunikezelo lwamandla lwangoku. Kunikezelo lwamandla lwangoku olungelulo lodwa, kuyafuneka ukwahlula i-AC kunye ne-DC, unikezelo lwamandla ombane aphezulu kunye ne-low-voltage ngoyilo lwesakhiwo sezixhobo zokukhanyisa ukuze kugqitywe isiqinisekiso se-CE okanye se-UL.

Iradiyetha ye-aluminiyam efakwe ngeplastiki

Yisinki yobushushu eneqokobhe leplastiki eqhubayo eshushu kunye nesiseko se-aluminiyam. Iplastiki ye-thermal conductive kunye ne-aluminiyam yokutshatyalaliswa kobushushu ingundoqo yenziwa ngexesha elinye kumatshini wokubumba, kwaye i-aluminium yokutshatyalaliswa kobushushu ingundoqo isetyenziswe njengenxalenye edibeneyo efuna ukulungiswa kwangaphambili. Ubushushu besibane se-LED bugqithiselwa ngokukhawuleza kwiplastiki ye-thermal conductive ngokusebenzisa i-aluminiyam yokutshatyalaliswa kobushushu. Iplastiki ye-Thermal conductive isebenzisa amaphiko ayo amaninzi ukwenza ukuchithwa kobushushu be-air convection, kwaye isebenzisa umphezulu wayo ukukhupha ubushushu obunye.

Iiradiyetha ze-aluminium ezigqunywe ngeplastiki ngokuqhelekileyo zisebenzisa imibala yoqobo yeplastiki ye-thermal conductive, emhlophe namnyama. Iiradiyetha ze-aluminium ezimnyama zeplastiki zeplastiki ezimnyama zineemitha ezingcono zokutshisa kunye nefuthe lokutshatyalaliswa kobushushu. Iplastiki ye-thermal conductive luhlobo lwemathiriyeli ye-thermoplastic. Ubumanzi, ubuninzi, ukuqina kunye nokomelela kwemathiriyeli kulula ukuyitofa. Inokumelana kakuhle nemijikelo yomothuko ebandayo kunye neshushu kunye nokusebenza okugqwesileyo kokugquma. I-coefficient ye-radiation yeplastiki ye-thermal conductive iphezulu kuneyezinto eziqhelekileyo zetsimbi

Ubuninzi beplastiki ye-thermal conductive yi-40% ephantsi kune-aluminiyam ye-die-cast kunye ne-ceramics, kunye ne-radiator ezinobumba obufanayo, ubunzima be-aluminiyam ehlanganiswe ngeplastiki inokuncitshiswa malunga nesinye kwisithathu; Xa kuthelekiswa nazo zonke iiradiyetha ze-aluminium, iindleko zokucubungula ziphantsi, umjikelo wokucubungula umfutshane, kwaye ubushushu bokusebenza buphantsi; Imveliso egqityiweyo ayinamandla; Umatshini wokubumba umthengi womthengi ngokwakhe unokusetyenziselwa ukuyila imbonakalo eyahlukileyo kunye nokuveliswa kwezibane zokukhanyisa. Iradiyetha ye-aluminium egqunywe ngeplastiki inokusebenza kakuhle kokugquma kwaye kulula ukuyigqitha imimiselo yokhuseleko.

Iradiyetha yeplastiki ye-thermal conductivity ephezulu

I-radiator yeplastiki ye-thermal conductivity ephezulu iphuhliswe ngokukhawuleza kutshanje. Iiradiyetha zeplastiki ze-thermal conductivity eziphezulu zizonke iiradiyetha zeplastiki, ezine-conductivity ye-thermal amatyeli aphindwe kalishumi aphezulu kuneeplastiki eziqhelekileyo, ezifikelela kwi-2-9w / mk, kunye nokuqhuba ubushushu obugqwesileyo kunye nobuchule bemitha; Uhlobo olutsha lwe-insulation kunye nezinto zokutshatyalaliswa kobushushu ezinokuthi zisetyenziswe kwizibane zamandla ezahlukeneyo, kwaye zingasetyenziswa ngokubanzi kwizibane ze-LED ezahlukeneyo ukusuka kwi-1W ukuya kwi-200W.

Iplastiki ye-thermal conductivity ephezulu inokumelana nombane ukuya kuthi ga kwi-6000V AC, iyenze ilungele ukusetyenziswa kombane ongeyodwa okhoyo ngoku kunye nombane we-voltage ophezulu ongaguquguqukiyo okhoyo ngoku we-HVLED. Yenza olu hlobo lwesibane sokukhanyisa i-LED lula ukudlula imimiselo engqongqo yokhuseleko efana ne-CE, TUV, UL, njl. I-HVLED isebenza kumbane ophezulu (VF = 35-280VDC) kunye ne-low current (IF = 20-60mA), eyanciphisa ukufudumeza. yepleyiti yentsimbi ye-HVLED. Iiradiyetha zeplastiki ze-thermal conductivity eziphezulu zingasetyenziswa kunye ne-injection yendabuko yokubumba kunye noomatshini be-extrusion.

Xa sele yenziwe, imveliso egqityiweyo inokugudiswa okuphezulu. Ukuphucula ngokubonakalayo imveliso, kunye nokuguquguquka okuphezulu kuyilo lwesitayile, inokusebenzisa ngokupheleleyo ifilosofi yoyilo lomyili. Iradiyetha yeplastiki esebenza ngokushushu ephezulu yenziwe ngePLA (isitatshi sombona) ipolymerization, yonakala ngokupheleleyo, ayinantsalela, kwaye ayinangcoliseko lwekhemikhali. Inkqubo yemveliso ayinalo ungcoliseko lwesinyithi esinzima, akukho lindle, kwaye akukho gesi ephumayo, ehlangabezana neemfuno zokusingqongileyo zehlabathi.

Iimolekyuli ze-PLA ngaphakathi kwe-thermal conductivity yeplastiki yokuchitha ubushushu umzimba igcwele i-ioni yensimbi ye-nanoscale, enokukhawuleza ihambe kumaqondo obushushu aphezulu kwaye inyuse amandla emitha ye-thermal. Ubomi bayo bungaphezulu kobo bemizimba yentsimbi yokuchitha ubushushu. Iradiyetha yeplastiki ye-thermal conductivity ephezulu iyamelana nobushushu obuphezulu, kwaye ayophuli okanye igxumeke iiyure ezintlanu kwi-150 ℃. Ngokusetyenziswa kwe-high-voltage linear eqhubekayo ye-IC drive scheme, ayifuni i-electrolytic capacitor kunye ne-inductance enkulu, iphucula kakhulu ubomi besibane sonke se-LED. Iskimu sobonelelo lwamandla esingekho sodwa sinokusebenza okuphezulu kunye neendleko eziphantsi. Ngokukodwa ngokufanelekileyo ukusetyenziswa kweetyhubhu ze-fluorescent kunye nezibane eziphezulu zamashishini kunye nezibane zemigodi.

Iiradiyetha zeplastiki ezine-thermal conductivity eziphezulu zinokuyilwa ngeendlela ezininzi ezichanekileyo zokutshatyalaliswa kobushushu, ezinokuthi zenziwe zibe zincinci kakhulu kwaye zibe nokwandiswa okukhulu kwendawo yokulahla ubushushu. Xa iifins zokuphelisa ubushushu zisebenza, ngokuzenzekelayo zenze i-convection yomoya ukusasaza ubushushu, okukhokelela kwisiphumo esihle sokuchitha ubushushu. Ubushushu besibane se-LED bugqithiselwa ngokuthe ngqo kwiphiko lokuchitha ubushushu ngeplastiki ephezulu ye-thermal conductivity, kwaye ikhutshwe ngokukhawuleza nge-convection yomoya kunye nemitha yomhlaba.

Iiradiyetha zeplastiki ze-thermal conductivity eziphezulu zinokuxinwa okukhaphukhaphu kune-aluminiyam. Ubuninzi be-aluminiyam yi-2700kg/m3, ngelixa ubuninzi beplastiki yi-1420kg/m3, malunga nesiqingatha se-aluminiyam. Ngoko ke, kwiiradiyetha zesimo esifanayo, ubunzima beeradiyetha zeplastiki yi-1/2 kuphela ye-aluminium. Ngaphezu koko, ukucutshungulwa kulula, kwaye umjikelezo wayo wokwenza ungafinyezwa ngu-20-50%, obuye unciphise amandla okuqhuba iindleko.