Do air purifiers kill toxins and bacteria, and can HEPA filters filter out the "New Crown Virus"?

Do air purifiers kill toxins and bacteria?HEPA filterCan it filter out the "new coronavirus"?

Right now this issue has received a lot of attention, for many people, go out and do a good job of protection is not enough, the home of the epidemic prevention work should also be done fully and comprehensive. This "war epidemic",moncler pas cher, must be solidly won.

First of all, the answer to the question at the beginning of the article is yes, air purifiers are indeed able to kill toxins and remove bacteria, but not every kind can. Here we will introduce which kinds of purifiers are able to kill poison and remove bacteria, and what is their purification principle.

HEPA

HEPA filterHEPA is the most common air filter and is the purification method used by the vast majority of purifiers on the market. HEPA is made of very fine organic fibers interwoven with a strong ability to capture particles, with a tiny pore size, a large adsorption capacity, and a high purification efficiency. HEPA filters are able to effectively filter airborne particulate matter up to 0.3 micrometers, with a filtration efficiency of 99.97%.

Speaking of which there may be some people have questions, "new crown virus" is not 0.11 microns, HEPA 0.3 micron particulate purification efficiency can reach 99.97% or more, that the 0.11 micron virus has a role?

HEPA filters are used in the majority of purifiers, good question, first answer "does it work", yes.

The reason for mentioning the purification effect on 0.3 micron particles is that the 0.3 micron level is the most difficult to filter, and is more difficult to filter than either larger or smaller, not smaller.

0.3 micron level particles, also known as PM0.3, this particulate matter is less susceptible to van der Waals force, so the evaluation of the protective effect mainly depends on the filtering efficiency of PM0.3. HEPA filter for PM0.3 filtering efficiency reached 99.97%, for PM0.1? The answer is 99.99%.

It's not the smaller the harder it is to filter. The hardest is the 0.3 micron level.

For such a good question, it should be expanded some more.

Although many people know that the diameter of the "new coronavirus" is about 0.11 microns, it is not the size of the virus itself that determines whether or not it can be effectively filtered. Look at the mode of transmission of the virus you can know, droplets is the main mode of transmission, and whether contact transmission or aerosol transmission has not been confirmed, the essence of the different forms of droplets, the virus needs to get on the "droplet" this rocket, and then "fly" out. The virus needs to get on the "foam" rocket before it can "fly" out.

That is, in order to filter a virus, we have to consider not how big the virus is, but how big the virus carrier is.

For a normal sneeze, the green droplets in the picture are the "droplets" that have been popularized over and over again, while the red ones are the "droplet nuclei", i.e. aerosols. What is the corresponding size? The diameter of the "droplet nucleus" is larger than 5 microns, while the "droplet" is even larger, at 10 microns or more.

So before in order to prevent the haze and buy air purifier friends, congratulations on picking up the treasure. Don't say what purifier is to filter the haze is not filtering viruses and so on, whether it is haze or viruses, in front of the filter to be regarded as particles.N95 mask itself is also a filter, and the filtering efficiency of the N95 is 95%, far lower than the HEPA's 99.97%.

A filter that hasn't been changed in a long time is like a mask that hasn't been changed in a long time, it doesn't work.

However, it should be reminded that if your home purifier has not been used for a long time, or for a long time without changing the filter, then the role of the role is a substantial attenuation. HEPA filters after a period of time, the purification efficiency will be discounted, which affects the air intake, filtration efficiency, the impact of air purification, so you need to replace the new filter in a timely manner.

This core filter is HEPA air purifier is the mainstream of the market, basically most of the purifiers on the market are HEPA filtration, the difference is not very big.

For the office, this GoMax air purification cooling and heating fan has a dual-purpose function of purification and heating, able to send warm air to all corners at a wide angle of 80 degrees, which is very suitable for offices where air conditioning cannot be turned on. It adopts H13 high efficiency sterilization filter, which can effectively filter the most difficult particles around 0.3 micron, 10 micron is within the range, plus 99.9% bacterial inhibition rate of bacterial coating, double protection is more assured.

High-voltage electrostatic dust collection

The biggest benefit of high pressure electrostatic dust collection is that you don't have to replace the filter, no consumables to save users money. After using for a period of time, just dismantle it, manually clean it and then dry it, then you can put it into the machine for reuse. Of course, high-pressure electrostatic dust collection also has its bad side, easy to produce ozone. At present, the level of high-pressure electrostatic dust collection technology is uneven, high-level technology can ensure that the amount of ozone generation in the safe range.

This Yuanda air purifier has the ozone concentration under control. It can continuously release 6300V high-voltage static electricity while killing bacteria and viruses, generating ozone that quickly penetrates into every nook and cranny of the environment to inactivate bacteria and viruses. The excess ozone can be decomposed into oxygen without any residue. Unlike chemical disinfectants that are toxic to humans and have residues of secondary pollution.

NCCO

This type of purification is special, and it is a patented technology that is currently used only by RHT. The reason for mentioning NCCO is that this technology was instrumental in reducing the incidence of cross-infection during the SARS outbreak in 2003.

During the outbreak of SARS in 2003, Tuen Mun Hospital in Hong Kong, the hospital with the largest number of SARS patients in Hong Kong, installed RHT's NCCO Oxygen Polymerization air purification equipment in all parts of the hospital, including urinal toilets, in order to cut off the transmission of viruses and stop the spread of viruses. Air purification equipment is installed in all parts of the hospital, including urinal toilets, to effectively kill germs and viruses spread through the atomization of excreta, and to improve the ventilation rate and remove bad odors.