What are the functions of the air purifier on the market?

　　Since the 80s of the last century, indoor air purifier has experienced a continuous improvement, experienced first, second generations, pure physical way to remove the floating objects and dust in the indoor air, to the present third generation of products, the function of removing indoor harmful gases has been greatly improved. In recent years, some specialized types of aircraft have adopted advanced nanotechnology to make efficient catalytic and photocatalytic purification technologies. At normal temperature and pressure, many harmful gases and chemicals are decomposed into harmless and tasteless substances, and the mature septate particle material (such as high density fiber filter layer HEPA) has been effectively cleared up to 0.3mm (human hair 1/300 diameter). In addition to chemical decomposition, the kind and adsorption efficiency of the contaminated materials are improved, and second times of pollution are not produced. The service life of the catalytic material is 20 times that of the ordinary material, and the cost of using the material is greatly reduced. It is the ideal air purifier component. The main ways to purify today's air purifiers include:

　　1. high density High efficiency particulate air filter (HEPA Filter)

　　HEPA filter layer is recognized as the most efficient air filter material in the world. It can absorb 0.3 microns of dust in the air (about the 1/300 size of the hair to the filter net, and the efficiency is up to 99.97 or more. " At the same time, it can also isolate bacteria larger than 0.3 microns, reducing the amount of bacteria in the air.

　　2. ultraviolet ray bactericidal lamp Ultra-Violet (UV) Lamp

　　It can be divided into UVC Lamp and UVV Lamp for bacteria and viruses. Ultraviolet light can change the DNA of bacteria, thereby preventing them from normal reproduction (Reproduction). The amount of bacteria in the air gradually decreases.

　　3. photocatalytic Photo-catalysis Type

　　Mainly for harmful chemicals, bacteria and viruses. Mainly with the "light" - generally UV Light role.

　　4. active carbon over Luke Actived Carbon Filter

　　Mainly for odor and harmful chemicals, but when used for a period of time, its substance will be saturated with "Saturated", and its efficacy will disappear and need to be replaced.

　　5. electrostatic dust smog Electrostatic Chamber

　　For soot, secondhand smoke and ultra dust, less than 0.01 microns (about 1/10000 size of hair). Basically, it can kill all bacteria and viruses at the same time, make them carbonized, and more effectively remove lampblack and second-hand smoke.

　　6. release negative ion Negative ion

　　Negative ions are produced by the decomposition of oxygen in air by high voltage corona. Some people believe that negative ions are vitamins in the air, which can promote metabolism and relieve tension. But it is certain that when the negative ions in the space are moderate, the air in the indoor space will be fresher, just like in the outskirts. In addition, the negative ions also have dust collecting effect, but the efficiency is not large, and negative ions must be evenly dispersed into the air with the help of wind power. The older generation of negative ion releaser has more chances to produce ozone, making it the two pollution.