Ob peb lub hlis dhau los, qhov cuam tshuam ntawm UVC lub teeb ntawm tus kab mob coronaviruses tau sib tham thiab tshaj tawm. LED chaw tsim khoom kuj tau mob siab rau UVC LED cov khoom hauv nqe lus ntawm cov chips, pob, modules, thiab cov khoom kawg. Thaum cov neeg hauv thaj chaw txheeb ze tab tom tos ntsoov rau lub neej tom ntej zoo ntawm UVC LEDs, ob lub xov xwm tsis ntev dhau los cuam tshuam ib daim pam ntub dhau lawv.
Ua ntej, Kos npe thiab Osram ob leeg tshaj tawm tias lawv nce cov khoom kab rau cov hluav taws xob UV yooj yim siv hloov UVC LEDs. Thib ob, ANSI Cov Qauv Tshiab tau txhais los ntawm Illuminating Engineering Society ntawm North America (IES) thiab International Ultra Violet Association (IUVA) feem ntau yog lub hauv paus ntawm UVC cov teeb ci.
(Duab: Sau npe)
Kev siv cov mercury-muaj cov pa UVC teeb tau maj mam txwv tom qab "Minamata Cov Lus Cog Tseg" tshaj tawm hauv xyoo 2013. UV LED yog li dhau los ua qhov kev daws teeb meem thiab ob peb lub chaw lag luam tau npaj rau qhov txav, xws li nce ntawm UVA (360 -241nm) nyob rau hauv daim ntawv thov kev lag luam hauv xyoo 2017; daim ntawv thov loj ntawm UVC-thev naus laus zis mus rau cov khoom siv hauv tsev thiab cov dej lim dej hauv xyoo 2018. Thiab qhov tsis tau npaj txhij txog KEVID-19 nyob rau xyoo 2020 yog ntxiv roj ntxiv rau cov nplaim taws. Txawm li cas los xij, kev txiav txim siab ntawm Osram thiab Kos Npe nrog rau cov qauv tshiab ntawm ANSI tau mus rau lwm sab, tshaj tawm cov teeb meem tam sim no ntawm UVC LEDs, thev naus laus zis (muaj peev xwm, luminous zog, qauv tsim) thiab tus nqi.
Orsam tus txwj laus tseem tau hais tias, "Peb tau tseem nyob hauv kev teeb tsa kev lag luam rau qee qhov kev siv kev lag luam uas qhov kev hloov pauv rau LED tseem tsis muaj peev xwm ntawm kev qhia lossis kev lag luam, suav nrog UV-C kev lag luam."
Tsis ntev los no kev ua lag luam tau pom ntau yam ntawm UVC LED cov khoom lag luam uas lees tias tua cov kab mob thiab cov kab mob, xws li lub teeb txawb ntawm tes lossis cov thawv tsis ua haujlwm. Txawm li cas los xij, ntau tus tseem muaj kev ua xyem xyav txog lawv qhov kev ua haujlwm tsis huv.
Yog li, dab tsi yuav tsum tau tawm mus tom ntej rau UVC LED tsim kev lag luam hauv qhov xwm txheej ntawd qhov kev vam meej pom tau tias yog qhov tsis zoo?
UVC kev ua haujlwm li cas?
Cov kev tshawb fawb pom tias thaum cov kab mob roj ntsha muaj nyob rau UV teeb ntawm 200-300nm, lawv cov DNA thiab RNA yuav raug kev puas tsuaj, uas ua rau lub hnab tawv nqaij tawg thiab ua rau lub cev tuag. Feem ntau, kev sib kis tau qhib rau lub sij hawm raug ntawm ib mus rau ob vib nas this. UVC nrog wavelengths ntawm 200-280nm yog li no tsuas yog hluav taws xob muaj peev xwm tua cov kab mob thiab kab mob, tshwj xeeb ntawm 253-254nm.
Cov tshuaj tua kab mob UVC (sib xyaw nrog lub teeb tsa hluav taws xob muaj hluav taws xob tsawg tsawg uas tsim los ntawm mercury thiab ozone) tau siv ntev ntev rau ntau yam kev tua kab mob hauv cov dej haus, khoom siv kho mob, rooj tog, daim pib, thiab huab cua huv.
Ntawm nimno, qhov teeb meem uas niaj hnub siv rau UVC cov teeb ci muaj nyob hauv cov teeb ci tsis pom kev tsis nco qab pom kev. Tib neeg xav hais tias lub peev xwm tua kab mob yeej tseem tau tib yam li lub teeb. Tsis tas li ntawd, kev ntsuas ntsuas ntawm UVC teeb yog tsuas yog ua raws li cov qauv ntawm cov teeb pom kev zoo ib yam nkaus.
Raws li cov lus qhia rau tus qauv kev ua kom tsis huv thiab ua kom tsis muaj kab mob, qhov koob tshuaj UVC rau tua cov kab mob sib txawv. Qhov kev txhaj tshuaj UV yog cov khoom lag luam ntawm UV siv (nyob rau ib cheeb tsam sab nraud) thiab lub sijhawm nyob.
K (Koob)=I (Kev hnyav) x T (Sijhawm)
Raws li cov mis, kev siv loj nrog lub sijhawm luv luv ua sib npaug rau cov kev siv qis nrog lub sijhawm ntev dua. Rau cov neeg siv cov uas tsis tshua txheeb xyuas lub sijhawm siv, ua kom pom kev pom, thiab kev ua kom tsis muaj menyuam, lawv tseem muaj kev pheej hmoo siab yuav raug rau cov khoom lag luam uas tsis raws cai.
UVC hluav taws xob tsis tshua muaj zog raws li peb xav, uas nws txoj kev nqus yuav raug cuam tshuam los ntawm hmoov av, ntawv, khoom plig thiab plastics. Txawm li cas los xij, thaum UVC hluav taws xob zoo rhuav tshem cov kab mob thiab kab mob, nws kuj ua rau tib neeg thiab tsiaj, yooj yim hauv qhov muag thiab tawv nqaij. Yog li, UV teeb yuav tsum ua haujlwm nrog cov khoom siv kev nyab xeeb, Kos npe thiab Osram ob leeg tsim lawv cov khoom nrog cov ntsuas hluav taws xob muaj kev ruaj ntseg uas ua rau UV teeb tua thaum tib neeg hla.
Kev ua paug ntawm cov teeb tsa UVC tuaj yeem siv rau kev ua lag luam thiab thaj chaw ib puag ncig thiab teeb meem vim cov teeb meem hais ua ntej.
Xyoo 2018, ntau lub tshuab hluav taws xob UVC LED tau ua tiav cov cuab yeej technology thiab tsim cov UVC LED chips nrog lub zog siab dua thiab tus nqi qis dua, uas ua rau muaj kev sib txawv ntawm UVC LED daim ntawv thov. Ntau lub chaw tsim khoom, xws li LG, Seoul Viosys (SETi), Crystal IS, AquiSense, Asahi Kasei, Dowa, thiab Jason, tau pib txhawb UVC LED cov khoom lag luam, feem ntau rau kev lim dej. Nws tsis yog kom txog thaum ntxov 2020 tias UVC LED tag nrho dhau los ua kev ntaus, nrog rau qhov cuam tshuam ntawm COVID-19.
Vim los ntawm COVID-19 muaj kabmob kis thoob plaws, tus kheej thiab pej xeem kev nyiam huv tau pib mloog ntau dua. Ntau lub portable UV LED cov khoom siv ua ntej hauv kev ua lag luam npog UV LED qhov ncauj qhov ntswg, UV ntxuav kab mob lub thawv, tsau, cua txias, tshuab lim cua thiab lwm yam. Tseem, qhov tsis zoo ntawm cov khoom lag luam txawv no tseem muaj lus nug.
(Sau: Charles Wu, Ntiaj Teb LED Daim Ntawv Thov Kev Ua Lag Luam Tsim Kev Lag Luam)
