Owona mceli mngeni mkhulu wobugcisa kwizibane ze-LED okwangoku kukutshabalalisa ubushushu. Ukutshatyalaliswa kobushushu obungalunganga kuye kwakhokelela ekuboneleleni kwamandla omqhubi we-LED kunye ne-electrolytic capacitors ibe yintsilelo yokuphuhliswa ngakumbi kwezibane ze-LED, kunye nesizathu sokuguga kwangaphambili kwemithombo yokukhanya ye-LED.
Kwiskimu sokukhanyisa usebenzisa i-LV LED umthombo wokukhanya, ngenxa yesimo sokusebenza somthombo wokukhanya kwe-LED kwi-voltage ephantsi (VF = 3.2V) kunye nephezulu yangoku (IF = 300-700mA), ivelisa ubushushu obuninzi. Izibane zesiNtu zinendawo elinganiselweyo, kwaye kunzima kwiindawo ezincinci zokutshisa ubushushu ukuba zikhuphe ngokukhawuleza ubushushu. Ngaphandle kokusebenzisa izisombululo ezahlukeneyo zokutshatyalaliswa kobushushu, iziphumo azizange zanelise kwaye zaba yingxaki engenakusombululeka kwizibane ze-LED. Sihlala sizama ukufumana izinto ezilula kunye nezilula zokusebenzisa ukufudumala ukushisa kunye ne-conductivity efanelekileyo ye-thermal kunye neendleko eziphantsi.
Okwangoku, xa ukukhanya kwe-LED kunikwe amandla, malunga ne-30% yamandla ombane aguqulwa abe amandla okukhanya, kwaye amanye aguqulwa abe ngamandla obushushu. Ngoko ke, ukuthumela ngaphandle kwamandla amaninzi ashushu ngokukhawuleza kunokwenzeka iteknoloji ephambili kuyilo lwesakhiwo sezibane ze-LED. Amandla e-thermal kufuneka atshatyalaliswe nge-thermal conduction, convection, kunye ne-radiation. Kuphela ngokuthumela ngaphandle ubushushu ngokukhawuleza kunokwenzeka ukuba ubushushu bomgodi ngaphakathi kwesibane se-LED buncitshiswe ngokufanelekileyo, unikezelo lwamandla lukhuselwe ekusebenzeni kwindawo yobushushu obuphezulu, kunye nokuguga kwangaphambili komthombo wokukhanya we-LED obangelwa kukuphakama kwexesha elide. -umsebenzi wobushushu uphetshwe.

Indlela yokuphelisa ubushushu kwizibane ze-LED
Ngenxa yokuba imithombo yokukhanya kwe-LED ngokwayo ayinayo imisebe ye-infrared okanye i-ultraviolet, ayinayo umsebenzi wokutshatyalaliswa kobushushu bemitha. Indlela yokuphelisa ubushushu yezibane ze-LED inokuthunyelwa ngaphandle kuphela nge-sink yobushushu idityaniswe ngokusondeleyo nebhodi ye-LED bead. Iradiyetha kufuneka ibe nemisebenzi yokuhambisa ubushushu, ukuhambisa ubushushu, kunye nemitha yobushushu.
Nayiphi na iradiyetha, ngaphandle kokukwazi ukuhambisa ngokukhawuleza ubushushu ukusuka kumthombo wobushushu ukuya kumphezulu weradiyetha, ikakhulu ixhomekeke kwi-convection kunye nemitha yokuchitha ubushushu emoyeni. I-Thermal conduction isombulula kuphela indlela yokudlulisa ubushushu, ngelixa i-thermal convection ngumsebenzi oyintloko wokutshisa ukushisa. Ukusebenza kokutshatyalaliswa kobushushu kumiselwa ikakhulu yindawo yokulahla ubushushu, imilo, kunye nokuqina kwendalo, kunye nemitha ye-thermal ngumsebenzi oncedisayo kuphela.
Ngokuqhelekileyo, ukuba umgama osuka kumthombo wobushushu ukuya kumphezulu we-sinki yobushushu ungaphantsi kwe-5mm, nje ukuba i-thermal conductivity yezinto eziphathekayo ingaphezulu kwe-5, ubushushu bayo bunokuthunyelwa kumazwe angaphandle, kunye nokunye ukuchithwa kobushushu kufuneka. ilawulwe yi-thermal convection.
Uninzi lwemithombo yokukhanyisa i-LED isasebenzisa ubuhlalu be-LED nge-voltage ephantsi (VF = 3.2V) kunye nephezulu yangoku (IF = 200-700mA). Ngenxa yokushisa okuphezulu okwenziwa ngexesha lokusebenza, i-aluminium alloys ene-high conductivity ye-thermal kufuneka isetyenziswe. Kuhlala kukho iiradiyetha ze-aluminium ezifayo, iiradiyetha ze-aluminiyam ezikhutshiweyo, kunye neeradiyetha ze-aluminiyam ezinesitampu. Iradiyetha ye-aluminiyam yokufa yitekhnoloji yeendawo zokuphosa uxinzelelo, apho ulwelo lwe-zinc yobhedu lwe-aluminium alloy lugalelwa kwizibuko lokutyisa lomatshini wokuphosa, emva koko ufe uphoswe ngumatshini wokuphosa ukuvelisa iradiyetha enemilo echaziweyo. ngundo owenziwe kwangaphambili.

Die cast aluminiyam radiator
Iindleko zokuvelisa ziyakwazi ukulawulwa, kodwa amaphiko okutshatyalaliswa kobushushu awakwazi ukwenziwa amancinci, okwenza kube nzima ukunyusa indawo yokushisa ukushisa. Izinto ezisetyenziswa ngokuqhelekileyo zokuphosa izibane zokushisa kwesibane se-LED yi-ADC10 kunye ne-ADC12.

Iradiyetha yealuminiyam ecudisiweyo
Ukucudisa i-aluminiyam elulwelo ukuze ibumbe ngokungunda okusisigxina, kwaye emva koko ukusika ibha ibe yimo enqwenelekayo yesinki yobushushu ngomatshini, kungenisa iindleko eziphezulu zokusetyenzwa kwizigaba zamva. Amaphiko okutshatyalaliswa kobushushu angenziwa amancinci kakhulu, kunye nokwandiswa okukhulu kwendawo yokushisa ukushisa. Xa amaphiko okutshabalalisa ubushushu asebenza, azenzele ngokuzenzekelayo i-air convection ukuze asasaze ubushushu, kwaye umphumo wokutshatyalaliswa kobushushu ulungile. Izinto ezisetyenziswa ngokuqhelekileyo ziyi-AL6061 kunye ne-AL6063.

Iradiyetha yealuminiyam enesitampu
Iphunyezwa ngokunyathela kunye nokutsala iipleyiti zentsimbi kunye ne-aluminium alloy kunye noomatshini bokubhoboza kunye nokubumba ukwenza ii-radiators ezibunjiweyo zekomityi. Iiradiyetha ezinesitampu zinemiphetho egudileyo yangaphakathi nangaphandle, kodwa indawo yokuchitha ubushushu encinci ngenxa yokungabikho kwamaphiko. Izinto ezisetyenziswa ngokuqhelekileyo ze-aluminium alloy ziyi-5052, i-6061, kunye ne-6063. Amalungu e-stamping 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 naphantsi ngoyilo lolwakhiwo lwezixhobo zokukhanyisa ukuze kugqitywe isiqinisekiso se-CE okanye se-UL.

Iradiyetha ye-aluminiyam efakwe ngeplastiki
Isisinki sobushushu esineqokobhe leplastiki eliqhuba ubushushu kunye nondoqo wealuminiyam. Iplastiki ye-thermal conductive kunye ne-aluminium yokushisa ubushushu ingundoqo ibunjwe ngexesha elinye kumatshini wokubumba inaliti, kwaye i-aluminiyam yokutshatyalaliswa kobushushu ingundoqo isetyenziswe njengenxalenye edibeneyo, efuna ukulungiswa koomatshini kwangaphambili. Ubushushu bamaso e-LED buqhutyelwa ngokukhawuleza kwiplastiki ye-thermal conductive ngokusebenzisa i-aluminiyam yokutshatyalaliswa kobushushu. Iplastiki ye-thermal conductive isebenzisa amaphiko ayo amaninzi ukwenza i-air convection heat dissipation kwaye ikhupha ubushushu obuthile kumphezulu wayo.
Iiradiyetha ze-aluminium ezisongelwe ngeplastiki zihlala zisebenzisa imibala yoqobo yeplastiki ye-thermal conductive, emhlophe namnyama. Iiradiyetha zeplastiki ezimnyama ezisongelwe ngealuminiyam zineziphumo ezingcono zokuchitha ubushushu bemitha. Iplastiki ye-Thermal conductive luhlobo lwemathiriyeli ye-thermoplastic ekulula ukuyibumba ngokubumba inaliti ngenxa yobuninzi bayo, ukuxinana, ukuqina, kunye namandla. Inokumelana okugqwesileyo kwimijikelo yomothuko we-thermal kunye nokusebenza okugqwesileyo kokugquma. Iiplastiki ze-thermal conductive zine-coefficient ephezulu ye-radiation kunezixhobo eziqhelekileyo zentsimbi.
Ubuninzi beplastiki ye-thermal conductive yi-40% engaphantsi kune-die cast aluminiyam kunye neeseramics. Kwiiradiyetha zesimo esifanayo, ubunzima be-aluminium ehlanganiswe ngeplastiki inokuncitshiswa malunga nesinye kwisithathu; Xa kuthelekiswa nazo zonke iiradiyetha ze-aluminiyam, ineendleko zokuqhuba eziphantsi, imijikelo emifutshane yokucubungula, kunye namaqondo obushushu asezantsi; Imveliso egqityiweyo ayinamandla; Abathengi banokubonelela ngoomatshini babo bokubumba inaliti yoyilo olwahlukileyo lwembonakalo kunye nokuveliswa kwezinto zokukhanyisa. Iradiyetha ye-aluminium esongelwe ngeplastiki inokusebenza kakuhle kokugquma kwaye kulula ukuyigqitha imimiselo yokhuseleko.

Iradiyetha yeplastiki ye-thermal conductivity ephezulu
Iiradiyetha zeplastiki ze-thermal conductivity eziphezulu ziye zaphuhliswa ngokukhawuleza kutshanje. Iiradiyetha zeplastiki ze-thermal conductivity eziphezulu luhlobo lwazo zonke iiradiyetha zeplastiki ezine-thermal conductivity amaxesha amaninzi aphezulu kuneeplastiki zesiqhelo, ezifikelela kwi-2-9w / mk, kwaye zine-conductivity ye-thermal egqwesileyo kunye nobuchule be-radiation; 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 ne-AC 6000V kwaye ifanelekile ukusetyenziswa kombane ongekho yedwa okhoyo ngoku kunye nombane ophezulu we-linear oqhubekayo unikezelo lwamandla lwangoku lwe-HVLED. Yenza ezi zibane ze-LED zibe lula ukudlula uhlolo olungqongqo olukhuselekileyo olufana ne-CE, TUV, UL, njl njl. I-HVLED isebenza kwi-voltage ephezulu (VF = 35-280VDC) kunye ne-low current (IF = 20-60mA) isimo, esinciphisa ubushushu. ukuveliswa kwebhodi ye-bead ye-HVLED. Iiradiyetha zeplastiki ze-thermal conductivity eziphezulu zinokwenziwa kusetyenziswa ukubunjwa kwenaliti yesintu okanye oomatshini bokukhupha.
Xa sele yenziwe, imveliso egqityiweyo inokugudiswa okuphezulu. Ukuphucula ngokubonakalayo imveliso, kunye nokuguquguquka okuphezulu kuyilo lwesitayile, ukuvumela abaqulunqi basebenzise ngokupheleleyo iikhonsepthi zabo zoyilo. Iradiyetha yeplastiki ye-thermal conductivity ephezulu yenziwe nge-PLA (isitatshi sombona) i-polymerization, eyonakaliswa ngokupheleleyo, i-residue free, kwaye ayinalungcoliseko 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 ye-thermal sink yobushushu ipakishwe ngokuxineneyo kunye nee-ion zetsimbi ze-nanoscale, ezinokuhamba ngokukhawuleza kumaqondo aphezulu kunye nokwandisa amandla okushisa okutshisa. Ubomi bayo bungaphezulu kobo bemizimba yentsimbi yokuchitha ubushushu. I-thermal conductivity yeplastiki ye-thermal sink yobushushu iyamelana nobushushu obuphezulu kwaye ayophuli okanye igxumeke iiyure ezintlanu kwi-150 ℃. Xa isetyenziswe nge-high-voltage linear eqhubekayo isisombululo se-IC drive, ayifuni i-electrolytic capacitors okanye i-inductors yevolumu enkulu, iphucula kakhulu ixesha lokuphila kwezibane ze-LED. Sisisombululo sonikezelo lwamandla esizimeleyo esisebenza ngokufanelekileyo kunye neendleko eziphantsi. Ngokukodwa ngokufanelekileyo ukusetyenziswa kweetyhubhu ze-fluorescent kunye nezibane eziphezulu zemigodi.
Iiradiyetha zeplastiki ezinobushushu obuphezulu zinokuyilwa ngamaphiko amaninzi achanekileyo okuphelisa ubushushu, anokwenziwa abhitye kakhulu ukunyusa ukwandiswa kwendawo yokuchitha ubushushu. Xa amaphiko okuchitha ubushushu esebenza, ngokuzenzekelayo enza i-convection yomoya ukusasaza ubushushu, okukhokelela kwisiphumo esingcono sokuchitha ubushushu. Ubushushu bamaso e-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, ephantse ibe sisiqingatha se-aluminiyam. Ngoko ke, kwiiradiyetha zesimo esifanayo, ubunzima beeradiyetha zeplastiki yi-1/2 kuphela ye-aluminium. Kwaye ukucutshungulwa kulula, kwaye umjikelo wayo wokubumba ungafinyezwa ngo-20-50%, obuye unciphise iindleko zamandla.