Air purifier purification technology.Car Air purifier sales

　　High-efficiency particulate air filters (HEPA) are one of the most popular technologies used in air purification. A standard HEPA filter can absorb 99.7% of suspended particles with a size of 0.3 microns (0.3 microns is the most difficult size to filter), but its wind resistance is relatively large, and it is generally rarely used in air purifiers. Whether the HEPA claimed by the manufacturer is actually a real HEPA, its filtration efficiency is slightly lower than that of HEPA, and its wind resistance is relatively low. Whether it is the real HEPA or the advertised HEPA, it makes the inhaled air fresher and cleaner. The filter absorbs chemical fumes, bacteria, dust particles and pollen, which are removed from the air after being filtered by an air purifier.

　　The advantage of 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 air-tight 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, it adopts a breakthrough electrostatic-carrying filter material to effectively block particulate pollutants larger than 0.1 microns in the air, such as dust, dander, pollen, bacteria, etc., and at the same time ultra-low impedance Ensure energy savings. In addition, the deep dust-holding design ensures a longer service life. As of 2013, it has been widely used in home and vehicle air conditioners (such as SAIC, Volkswagen, GM and other well-known brands of best-selling models) and some commercial buildings (such as Bird's Nest, Beijing Hotel, Capital Airport Phase III).

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