UVC ezagutza

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UVC argiak birusak eta bakterioak hil ditzake?

Denbora: 2020-04-21

For decades, scientists have been devoted to the research of UVC light for disinfection, especially when the UVC market is huge and the human pursuit of health is more important than ever before.


More and more reports indicate that UVC light products can kill viruses and bacteria higher than a 99.9% rate, which directly leads to the crazy purchase of UVC products.


But in fact, few people know exactly what UVC light is and whether UVC light is useful for sterilization.

Ondoren, zehatz-mehatz azalduko dugu what UVC lights are, how they work, their precautions for use and some commercial applications ulermena lortzen laguntzeko.


uvc light sterilization


Wha is UVC light?


Denok dakigun bezala, Eguzki argia uhin luzera desberdinetako argiaren energia nahasketa da.


Uhin-luzerak 380 nanometro (nm) eta 780 nanometro (nm) bitartekoak dira argi ikusgai deitzen direnak, eta uhin-lerrotik kanpo daudenei, berriz, argi ikusezinari deritzo.

Ultraviolet light is a type of invisible light ranging from 10 nm to 400 nm. And the function of UV light depends on the range of wavelength.

  • UV-A: 320nm-tik 400 nm-ra

It makes up the majority of UV light reaching the Earth. And it can damage our skin.

  • UV-B: 280nm-tik 320nm-ra

Larruazaleko gaixotasunak tratatu ditzake. Baina esposizio gehiegi eguzkiak eta baita larruazaleko minbizia ere eragingo ditu. Eta UVBen% 2 baino gutxiago bakarrik lurrera iritsi daiteke.

  • UV-C: 200nm-ra 280nm-ra

It is particularly good at sterilizing. But its penetration ability is very weak. Before reaching the ground, all UVC light will be absorbed by ozone in the atmosphere. That means, standing under the sun is useless for sterilization.

  • In summary: UV light Rule

Uhin-luzera zenbat eta laburragoa izan, orduan eta energia handiagoa da, baina barneratzea ahulagoa da, orduan eta azkarrago desagertuko da.


Function of UVC light

Lotutako ezagutzak: Zein UV argia da onena?

Because UVC light can be used for sterilization, coupled with the epidemic environment, the market demand for UVC products can be described as Crazy now.

Eta merkatuaren balorazioa 140,000,000 dolar amerikar izatetik 500,000,000 dolar izatera igaro da.

The big question right now may be how does UVC light work and can it kill viruses & bacteria?


How does UVC light work?


Before the deep study of UVC light, I thought all sunlights have the sterilization effect. Bacteria and viruses will be killed by "sunburn" or heat.

But that's not the truth.


  • Sterilization Principle of UVC light


In fact, UVC light will destroy the DNA or RNA of the bacteria & viruses, without the use of chemicals, making them inactive and unable to reproduce.

Since the lifespan of single bacteria & viruses is very short, once they lose the reproduce ability, it means death. So the purpose of sterilization has been achieved.


In scientific research, it has been found that UVC light can use very little time to finish the disinfection process and make most microbes reduction up to 99.99%.


Research of UVC light

Based on this information, UVC light is believed to be quiet effective at killing viruses and bacteria.


However, the vitality of different viruses and bacteria are different. Some bacteria&viruses may be injured once they are exposed to UVC light, while others are not.


UV dosia nahikoa ez bada, zenbait birusek jarduera galduko dute aldi baterako, eta poliki poliki beren egitura konponduko dute.


  • Special requirements of UVC lights

At present, there are no specific figures to show how much UV dose flu viruses needs to be killed. Maybe 1,085 mJ / cm2 or 3,640 mJ / cm2 . Anyway, a huge number.

You may be wondering if we stand under the sunlight containing UVC light, can we be disinfected by it?

Unfortunately, the answer is no. Although the sterilization ability of UVC light is extremely strong, the penetration ability to objects (including air) is extremely weak. Before reaching the ground, all UVC light will be filtered out by ozone in the atmosphere.

Horregatik, desinfekzio ultramoreko lanpara antzekoen eramaile bat erabili behar dugu desinfekzioa lortzeko.


Please pay attention to the fact that most UV lamps on the market are only designed to meet the common standard, that is, 40mJ / cm2 UV dose required for a 99.99% inactivation rate.


Study result of UVC light

Further considering the decay of UVC light in the air, those lamps make no sense for disinfection.

Beraz, ez ezazu sinetsi konpainia batzuek "birusak eta bakteriak hil ditzakegula" esaten dutenean, batzuetan marketina lengoaia da.

Kontuan izan behar dugu efizientzia, denbora eta kostua bakarrik direla funtsezko faktoreak UV lanpara aukeratzeko.


Are ultraviolet lamps containing uvc light safe?


Although UVC light can indeed kill viruses and bacteria, there are various problems with household ultraviolet disinfection lamps on the market:

(1) Desinfekzio ultramore tradizionaletako lanparak handiak dira (gutxienez 40 cm-ko altuera edo gainetik), eraginkortasun txikia dute. 1W LED argi iturriak funtsean metro koadroko espazioa soilik estali dezake.


(2) Desinfekzio ultramoreen lanpara gehienen argi-iturriak merkurioa dauka, hau da, ingurumena eta osasuna txarra izanez gero askatzen badira.

(3) Desinfekzio ultramoreko lanparak espektro zabaleko lanparak dira, besteak beste, UVC, UVA eta UVB, ozonoa sor dezaketenak, nekea, eztula, bularreko estua, goragalea eta memoria galtzea bezalako sintomak sorrarazten dituztenak.


Applications of UVC light

From this perspective, the main application scenarios of UVC light should be industrial types to maintain safe.


Applications of uvc light


To make better use of UVC light, we have developed a new lighting technology, which can make the UVC energy in a very small size with 3.5mm x 3.5mm without mercury.


Tamaina honekin, ekipamendu eramangarri askotan aplika daiteke desinfekzio funtzioak dituztenak:

(1) Azalera


Kutsatutako gainazalak, hala nola ospitaleko gelak eta ekipamenduak, egongelak, aireportuak eta ia toki publiko edo elementu pribatuak.


(2) Ura


Mercury-free UVC light is a clean and safe water disinfectant, UVC LED based solutions tackle these pathogens without impacting the water's smell, taste or mineral contents.

UVC soluzioak erabil ditzakegu ura arazteko sisteman edo komuneko sisteman.


(3) Aire


Airearen araztek aireko partikulen% 99.97 kentzen dute. Hala ere, iragazkiek ez dituzte mikroorganismo patogeno txikiak kentzen, gripearen antzera.

UVC soluzioak erabil ditzakegu aireak arazteko sisteman edo aire girotuko komertzio sisteman.


How to use UVC light

All in all, UVC light can indeed kill viruses and bacterial if we choose the right system for specific applications.


Lotutako artikulua: Zure UV Lanparen erosketaren azken eroslearen gida


Minisplitetarako UVC LED irtenbide eraginkorra


HVAC unitateetarako UVC irtenbide eraginkorra