Purification technology is one of the basic technologies of air purifiers?Air purifier Production

　　Purification technology is one of the basic technologies of air purifiers?

　　The basic technology of air purifiers is filter technology, which includes three types: HEPA filter, electrostatic electret filter technology, and activated carbon filter.

　　HEPA filter

　　High efficiency particulate air filter (HEPA) is one of the most popular technologies used in air purification. The standard HEPA filter can absorb 99.7% of suspended particles of 0.3 microns in size (0.3 microns is the most difficult to filter size), but its wind resistance is relatively large, and it is rarely used in air purifiers. Actual air purifiers Is the HEPA declared by the manufacturer actually HEPA? Its filtration efficiency is slightly lower than HEPA, and the wind resistance is relatively low. Whether it is the real HEPA or the publicized HEPA, it makes the inhaled air fresher and cleaner. The filter absorbs chemical fumes, bacteria, dust particles and pollen. After being filtered by the air purifier, there are no such pollutants in the air.

　　The advantage of the HEPA filter is that it is effective and safe, and it is the most important technology to remove particulate pollutants in the air, but the disadvantage is that it can only filter out suspended particles and cannot filter out harmful gases. Air purifiers using HEPA must have a good airtight design, otherwise the air will go around the filter and lose the filtering effect.

　　Electrostatic electret filter technology

　　The use of non-woven fabrics loaded with electrostatic electrets to collect dust is an upgraded version of HEPA technology. The advantages are low wind resistance, high efficiency, high dust holding capacity, and the most important thing is safety. Represented by the “high-efficiency electrostatic air filter” on the market, a breakthrough filter material that carries permanent static electricity is used to effectively block particulate pollutants larger than 0.1 microns in the air, such as dust, dander, pollen, bacteria, etc., at the same time. Impedance ensures energy saving. In addition, the deep dust-holding design ensures a longer service life. As of 2013, it has been widely used in home and car air conditioners (such as SAIC, Volkswagen, GM, and other well-known brand-selling models) and some commercial construction areas (such as the Bird's Nest, Beijing Hotel, and Capital Airport Phase III).

　　Activated carbon filter

　　Air purification activated carbon is an internationally recognized high-efficiency adsorption material. As early as the "World War I", it was used in gas masks. Activated carbon is widely used for air purification in cars or indoors. Activated carbon is a porous carbonaceous material. Its developed void structure makes it have a large surface area, so it is easy to fully contact with the poisonous and harmful gases in the air. The strong adsorption force field around the activated carbon pores will immediately become poisonous. The gas molecules are sucked into the holes, and the activated carbon is polymerized into a honeycomb block by the ultra-carbon core filter technology. Compared with the conventional activated carbon filter, its specific surface area is doubled, and the air contact area is increased to 20 times. The net resistance is reduced by 1.5 times, and it is also loaded with cold catalyst technology for the catalytic decomposition of toxic gases such as formaldehyde. Therefore, activated carbon has a strong adsorption capacity is also the main technology to remove gaseous pollutants. Activated carbon adsorption technology is mainly divided into two categories: physical adsorption and chemical adsorption.

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