ByLydia Scott 2020-03-17 3327
At present, most of the air purifiers on the market are filter screen purification type. the main principle is to use a fan to pump the air into the machine and filter the air through the built-in filter screen. As long as the diameter of the filter is less than the diameter of the microorganism, the pollution source can be filtered out. One of the most commonly used is HEPA filter, which is made of very small organic fibers, which has a strong ability to capture particles, small pore size, large adsorption capacity, high purification efficiency, and water absorptivity. the purification rate of 0.3-micron particles is 99.97%. For example, the common Xiaomi mijia air purifier.
At present, some empty and clean products with H13 grade HEPA filters have been verified, which can filter out the H1N1 virus with a diameter similar to that of the novel coronavirus. Theoretically, it should also have a certain filtering effect on this COVID-19 coronavirus. However, it should be noted that this theory has not been supported by exact experimental data.
If an air purifier is equipped with ultraviolet/ozone/anion sterilization while using a high-efficiency filter, it can kill viruses and bacteria while filtering bioaerosols, which is more effective for disease prevention.
Although it has not been proved that air purifiers can adsorb and kill COVID-19 coronavirus, even ordinary air purifiers can improve indoor air quality when staying at home for a long time. However, when you keep turning on the air purifier, don't forget to open the windows regularly to maintain a good ventilation environment.
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