Some knowledge of air purifier filter.Air purifier wholesale

　　How often do I change the filter element of the air purifier? It depends on the air quality in your area. Generally, if the pollution is not so serious, replace it every six months to once a year. If the pollution is serious, it will take twoorthree months. If the filter element is not replaced in time, it will cause secondary pollution of indoor air.

　　Which kind of filter element of air purifier is better

　　1. Pre filter screen

　　Before you go shopping, you should clearly know what the main pollution sources around your home are. Only in this way can you make targeted shopping, which is directly related to the selection of filter elements. Because different filter elements filter different substances, such as pre filter screen, which is made of non-woven coarse filter cotton, with good air permeability, strong sealing and no leakage. It is mainly used for primary filtration, which can effectively remove large dust, mold and animal hair, It can protect the filter screen.

　　2. HEPA strainer

　　Next, it is formed by the intersection of micro fibers, with small pores, strong adsorption, large particle capture ability, obvious screening effect and high purification efficiency. It can adsorb 99.7% of the suspended particles with the size of 0.3 μ M. in short, only 3 of the 10000 particles can penetrate the HEPA filter membrane, and the filtration effect is almost 100%.

　　3. Activated carbon filter screen

　　This kind is common in daily life. It is composed of porous carbonaceous substances, with many and large pores. The contact surface with air can be expanded by 20 times. After full contact with air, toxic gas molecules can be quickly sucked into the pores. It was used in gas masks in the early stage. It is a recognized high-efficiency adsorption material. When used in the filter screen, it can not only adsorb macromolecular organic gases such as benzene, but also small molecular gaseous pollutants such as formaldehyde and hydrogen sulfide, so as to avoid secondary pollution caused by small molecular gases.

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