With the progress of epidemic prevention and control, many citizens are isolated at home, and when they gather indoors for a long time and cannot open windows at all times, how to keep the indoor air clean and avoid the infection risk caused by virus droplets and aerosols that may exist in the indoor air Woolen cloth? Air purifier or open windows for ventilation? Come and learn about these little things!
The role of air purifiers
Air purifiers usually have the function of purifying PM2.5, dust, pollen and other particulate pollutants, and some products also have the function of purifying formaldehyde, TVOC and other gaseous pollutants or sterilizing functions.
Experts from the Shanghai Environmental Protection Industry Association introduced that because the virus in the air does not exist alone, it always attaches to particulate matter, or forms aerosols with droplets, so household air purifiers using HEPA filters can filter Remove airborne viruses, including the new coronavirus. The principle is similar to that of N95 masks: when we wear a mask, our “breathing” is equivalent to the fan in the air purifier, and the mask is equivalent to the HEPA filter of the air purifier. When the air passes through, the particles in it are very high. It is easily absorbed by the filter. Moreover, the HEPA filter has a filtration efficiency of at least 99.97% for particles with a particle size of 0.3 microns, which is higher than the filtration efficiency of N95 masks with a filtration efficiency of 95%.
Tips for using air purifiers
1. Replace the filter regularly to ensure the purification effect. With the increase of the number and time of use, the particles on the filter will gradually accumulate together with the viruses attached to it, which may block the filter, affect the purification effect, and even lead to the growth and aggregation of microorganisms, resulting in secondary pollution. It is recommended that the filter should be replaced and cleaned more frequently than in the past.
2. Correctly replace the filter screen to avoid secondary pollution. When replacing the filter, it is recommended to wear a mask and gloves, and do personal protection; the replaced old filter should not be discarded at will, and it can be disposed of as harmful waste in special places in special times. For filters that have not been used for a long time, microorganisms are also easy to breed, and it is recommended to replace them before using them.
In addition, if an air purifier is also equipped with active sterilization functions such as ultraviolet lamps and ozone, its effect on preventing virus infection will be better (especially products with disinfection equipment certification). In order to prevent personal safety hazards, remember to Use correctly as directed. While continuing to turn on the air purifier, don’t forget to open the windows regularly for ventilation.
Post time: May-27-2022