Ukuqhathaniswa kwezinhlobo ezi-5 ze-HEAT SINK zokukhanyisa izibani ze-LED

Njengamanje, inkinga enkulu yobuchwepheshe yokukhanyisa izibani ze-LED yinkinga yokushisa ukushisa

Ukushisa okungekuhle kuholela ekunikezeni kwamandla okushayela kwe-LED kanye nama-electrolytic capacitor, asephenduke ibhodi elifushane lokuthuthukiswa okuqhubekayo kwezinto zokukhanyisa izibani ze-LED, nesizathu sokuguga ngaphambi kwesikhathi kwemithombo yokukhanya ye-LED.
Kuhlelo lwesibani kusetshenziswa umthombo wokukhanya we-LV LED, ngoba umthombo wokukhanya we-LED usebenza ku-voltage ephansi (VF=3.2V), isimo samanje esiphezulu (IF=300~700mA), ukushisa kunamandla kakhulu, kanye nesikhala sendabuko. izibani zincane futhi indawo encane.Kunzima ukuthi i-radiator ikhiphe ukushisa ngokushesha okukhulu.Nakuba izinhlelo ezihlukahlukene zokunciphisa ukushisa zamukelwe, imiphumela ayigculisi, futhi isiyinkinga engaxazululeki yokulungiswa kwezibani ze-LED.Ukusesha izinto ezisetshenziswa kalula zokukhipha ukushisa ezisebenziseka kalula, ezihambisa ukushisa, kanye nezindleko eziphansi kuhlala kusendleleni.

Njengamanje, ngemva kokuba umthombo wokukhanya we-LED uvuliwe, cishe u-30% wamandla kagesi aguqulwa abe amandla okukhanya, bese amanye aguqulwa abe amandla okushisa.Ngakho-ke, ubuchwepheshe obuyinhloko bomklamo wesakhiwo sesibani se-LED ukuthumela amandla amaningi okushisa ngokushesha ngangokunokwenzeka.Amandla okushisa adinga ukuchithwa ngokuqhutshwa kokushisa, i-convection yokushisa kanye nemisebe yokushisa.Kuphela ngokuthumela ngaphandle ukushisa ngokushesha ngangokunokwenzeka izinga lokushisa lomgodi esibanini se-LED lingancishiswa ngempumelelo, ukunikezwa kwamandla kungavikelwa ekusebenzeni endaweni ehlala isikhathi eside yokushisa ephezulu, kanye nokuguga ngaphambi kwesikhathi komthombo wokukhanya we-LED ngenxa yobude besikhathi eside. -term ukusebenza okusezingeni eliphezulu lokushisa kungagwenywa.

Ukuchithwa kokushisa kwezibani ze-LED

Kungenxa yokuthi umthombo wokukhanya we-LED ngokwawo awunayo imisebe ye-infrared ne-ultraviolet, ngakho umthombo wokukhanya we-LED ngokwawo awunawo umsebenzi wokukhipha ukushisa kwemisebe.I-radiator kumele ibe nemisebenzi yokuqhuba ukushisa, i-heat convection kanye nemisebe yokushisa.
Noma iyiphi irediyetha, ngaphezu kokukwazi ukuphatha ngokushesha ukushisa okuvela emthonjeni wokushisa kuya phezulu kurediyetha, ngokuyinhloko incike ku-convection kanye nemisebe ukuze ikhiphe ukushisa emoyeni.I-Heat conduction ixazulula kuphela indlela yokudlulisa ukushisa, kuyilapho ukuhanjiswa kokushisa kuwumsebenzi oyinhloko we-radiator.Ukusebenza kokukhishwa kokushisa kunqunywa ikakhulukazi indawo yokukhipha ukushisa, umumo, kanye nekhono lamandla emvelo okuhambisa, kanye nemisebe yokushisa iyindima eyisizayo kuphela.
Ngokuvamile, uma ibanga elisuka emthonjeni wokushisa liye endaweni yesinki yokushisa lingaphansi kuka-5mm, khona-ke inqobo nje uma ukuhanjiswa okushisayo kwempahla kungaphezu kuka-5, ukushisa kungahlakazwa, nokunye ukushabalalisa ukushisa. kufanele ibuswe yi-convection eshisayo.
Imithombo eminingi yokukhanyisa i-LED isasebenzisa i-low-voltage (VF=3.2V), i-high-current (IF=200-700mA) ubuhlalu besibani se-LED.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 yokufa iwubuchwepheshe bezingxenye zokusakaza ezifayo.Ingxubevange ye-zinc-copper-aluminium ewuketshezi ithululelwa embotsheni yokuphakelayo yomshini okhipha ukufa, bese i-die-casting umshini wokuphonsa ukuze uphonsa irediyetha yomumo echazwe isikhunta esiklanywe ngaphambili.

I-Die-cast aluminium heatsink

Izindleko zokukhiqiza ziyalawuleka, futhi amaphiko okukhipha ukushisa awakwazi ukwenziwa abe mncane, okwenza kube nzima ukukhulisa indawo yokukhipha ukushisa.Izinto ezisetshenziswa kakhulu zokusakaza i-die-cast kumasinki okushisa amalambu e-LED yi-ADC10 ne-ADC12.

I-Aluminium Heat Sink Ekhishiwe

I-aluminium ewuketshezi ikhishwa nge-fixed die, bese ibha isikwa ibe yi-radiator yesimo esidingekayo ngomshini, futhi izindleko zangemuva kokucubungula ziphakeme kakhulu.Amaphiko okupholisa angenziwa abe mncane kakhulu, futhi indawo yokukhipha ukushisa inwetshwe ngezinga elikhulu kakhulu.Uma izimpiko zokupholisa zisebenza, ukuzungeza komoya kwakheka ngokuzenzakalelayo ukuze kusabalalise ukushisa, futhi umphumela wokukhipha ukushisa uba ngcono.Izinto ezisetshenziswa kakhulu yi-AL6061 kanye ne-AL6063.

Isinki sokushisa se-Aluminium esigxiviziwe

Iwukushaya futhi uphakamise amapuleti ensimbi ne-aluminium alloy ngokubhoboza imishini nezibunzi ukuze awenze amaradiyetha amise okwenkomishi.I-periphery yangaphakathi nangaphandle yama-radiator anesitembu abushelelezi, futhi indawo yokushisa ukushisa inqunyelwe ngenxa yokuntuleka kwamaphiko.Izinto ezisetshenziswa kakhulu ze-aluminium alloy ziyi-5052, 6061, kanye ne-6063. Ikhwalithi yezingxenye zokunyathela incane futhi izinga lokusebenzisa izinto ezibonakalayo liphezulu, okuyisisombululo esingabizi kakhulu.
I-heater conduction ye-aluminium alloy radiator ilungile, futhi ifaneleka kakhulu ekushintsheni okukodwa kokunikezwa kwamandla wamanje.Ukuze uthole ugesi oshintshwayo ongahlukanisiwe wamanje, kuyadingeka ukwahlukanisa i-AC ne-DC, amandla kagesi ane-voltage ephezulu kanye ne-low-voltage ngomklamo wesakhiwo wezibani ukuze kudlule isitifiketi se-CE noma se-UL.

Isinki sokushisa esifakwe ngepulasitiki

Kuyi-radiator eyinhloko yepulasitiki ehambisa ukushisa.Ipulasitiki ye-thermally conductive kanye ne-aluminium yokushisa ukushisa core kwakhiwa emshinini wokubumba umjovo ngesikhathi esisodwa, futhi umgogodla wokulahla ukushisa kwe-aluminium usetshenziswa njengengxenye eshumekiwe futhi udinga umshini kusengaphambili.Ukushisa kobuhlalu besibani se-LED kudluliselwa ngokushesha epulasitiki ehambisa ukushisa nge-aluminium yokushisa yokushisa, futhi ipulasitiki ye-thermal conductive isebenzisa amaphiko ayo amaningi ukuze yenze ukuchithwa kokushisa kwe-air convection, futhi isebenzisa indawo yayo ukuze ikhiphe ingxenye yokushisa.
Amaradiyetha e-aluminium enziwe ngepulasitiki ngokuvamile asebenzisa imibala yoqobo yamapulasitiki aphatha ukushisa, amhlophe namnyama, namaradiyetha epulasitiki amnyama anepulasitiki ane-aluminiyamu enemiphumela engcono yokushabalalisa ukushisa.Ipulasitiki ene-thermal conductive iyimpahla ye-thermoplastic.I-fluidity, ukuminyana, ukuqina namandla ezinto kulula ukubumba umjovo.Inokumelana okuhle nemijikelezo yokushaqeka okubandayo kanye ne-thermal kanye nezakhiwo ezinhle kakhulu zokufakelwa.I-emissivity yamapulasitiki ahambisa ukushisa ingcono kunezinto ezijwayelekile zensimbi.
Ukuminyana kwepulasitiki ye-thermally conductive kuncane ngo-40% kune-die-cast aluminium kanye ne-ceramics, futhi isisindo se-aluminium ehlanganiswe ngepulasitiki singancishiswa cishe ingxenye eyodwa kwezintathu ngesimo esifanayo se-radiator;uma kuqhathaniswa nawo wonke ama-radiator e-aluminium, izindleko zokucubungula ziphansi, umjikelezo wokucubungula mfushane, futhi izinga lokushisa lokucubungula liphansi;Umkhiqizo ophelile akulula ukuwuphula;umshini wokubumba umjovo ophethwe yikhasimende ungenza ukwakheka komumo ohlukene kanye nokukhiqizwa kwezibani.Irediyetha ye-aluminium egqoke ipulasitiki inokusebenza kahle kokuvikela futhi kulula ukuyidlula imithetho yezokuphepha.

High conductivity ezishisayo epulasitiki ukushisa usinki

Irediyetha yepulasitiki ene-thermal conductivity ephezulu ithuthuke ngokushesha muva nje.I-radiator yepulasitiki ene-thermal conductivity ephezulu iyi-radiator yepulasitiki yonke.I-thermal conductivity yayo iphindwe izikhathi eziningi kunepulasitiki evamile, ifinyelela ku-2-9w/mk.Inekhono elihle kakhulu lokuqhuba ukushisa kanye namandla emisebe yokushisa.;Uhlobo olusha lwe-insulation kanye nezinto zokushisa ezingasetshenziswa ezibani zamandla ahlukahlukene, futhi zingasetshenziswa kabanzi ezinhlotsheni ezihlukahlukene zezibani ze-LED kusukela ku-1W kuya ku-200W.

Ukushisa okuhlanganisiwe kwemojuli ye-photothermal

Kuhlanganiswe nobuchwepheshe bokupakisha obunezinhlangothi ezintathu zomthombo wokukhanya we-K-COB kanye nesigaba esizithokozisayo sokushintsha ubuchwepheshe bokulawula ukushisa, kwakhiwa imojuli ehlanganisiwe ye-photothermal.Ithusi elingenawo umoya-mpilo ohlanzekile ophakeme lisetshenziswa njengezinto ezingavuthiwe, futhi i-coefficient yokudlulisa ukushisa ingafinyelela ku-300,000 w/mk, ephakeme kakhulu emhlabeni.Impahla esheshayo ye-superconducting, ubuchwepheshe obunelungelo lobunikazi besakhiwo sepuleti lesisekelo sokushisa okufanayo, kanye nesakhiwo saso esikhethekile sokushisa okufanayo sinamandla okushisa aqine kakhulu emhlabeni kanye namandla okukhipha ukushisa, okwenza umthombo wokukhanya kwesibani impilo ende kanye nezinzuzo zobukhulu obuncane nesisindo esilula.Ukushisa komthombo wokukhanya kudluliselwa ngokushesha kusinki ngasinye sokushisa ukuze kuqhube ngokugcwele ukuguqulwa okushisayo ngendawo yesikhala, ukuze kuzuzwe ukupholisa okusheshayo, okulingana ne-air conditioner encane ene-LED chips.

K-COB LED CHIPS

Ngokuhambisana nobuchwepheshe bokuqhuba ukushisa kweziteshi ezimbili zomthombo wokukhanya ngokwawo, imithombo emibili yokushisa eyinhloko yomthombo wokukhanya we-LED, i-chip ye-LED kanye nesiteshi sokushisa esiyinhloko se-ceramic phosphor, ihlukaniswe.Ukwendlaleka, nangokuhlelwa kwe-chip okunengqondo, ukwenzeka kokuhlangana okushisayo kungagwenywa ngokuphumelelayo, ngaleyo ndlela kuncishiswe ngempumelelo izinga lokushisa le-chip, kanye nobuchwepheshe bokupakisha bomthombo wokukhanya we-K-COB buthuthukisiwe, ngaleyo ndlela kuthuthukiswe ukusebenza nempilo yokukhanya kwe-LED. umthombo.

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Isikhathi sokuthumela: Mar-10-2022
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