What are the functions of air purifiers on the market?
Beginning in the 1980s, indoor air purifiers have undergone continuous improvement. They have experienced the first and second generations, purely physically removing suspended solids and dust in the indoor air, and the third generation of products that have been produced so far are There have been very prominent improvements in the function of removing harmful indoor gases. In recent years, some professional models have adopted advanced nanotechnology to produce high-efficiency catalytic and photocatalytic purification technologies. Under normal temperature and air pressure, a variety of harmful gases and chemicals are decomposed into harmless and odorless substances. Combined with mature particulate materials (such as high-density fiber filter layer HEPA), it can effectively remove as low as 0.3mm. (Human hair 1/300 diameter size) suspended particles, so it has changed from pure physical adsorption to chemical decomposition at the same time, and improve the types of pollutant removal materials and adsorption efficiency, and will not cause second pollution. The service life of catalytic materials is 20 times that of ordinary materials, which greatly reduces the cost of consumables. It is the most ideal air purifier component today. The main methods of air purifiers today include:
1. High density filter High efficiency particulate air filter (HEPA Filter)
The HEPA filter is recognized as the most efficient air filter material in the world. It can absorb dust as small as 0.3 microns (about 1/300 the size of hair) into the filter, and the efficiency is as high as 99.97% or more. At the same time, bacteria larger than 0.3 microns can be blocked, reducing the amount of bacteria in the air
2. Ultra-Violet (UV) Lamp
can be divided into UVC lamp for bacteria and virus and UVV lamp for deodorization. Ultraviolet rays can change the DNA of bacteria, thereby preventing them from reproduction (Reproduction), and the amount of bacteria in the air will gradually decrease
3. Photo-catalysis Type
mainly targets harmful chemicals, bacteria and viruses. It mainly works with "light"-generally UV light
4. Actived Carbon Filter
is mainly for peculiar smell and harmful chemical substances, but after a period of use, the substance itself will be saturated "Saturated", the effect will disappear and need to be replaced
5. Electrostatic Chamber Electrostatic Chamber
For oil smoke, second-hand smoke and ultrafine dust, less than 0.01 microns (about 1/10,000 the size of hair). Basically can kill all bacteria and viruses at the same time, make them carbonized, and more effectively remove oily smoke and secondhand smoke
6. Release Negativeion
Negative ions are generated by the decomposition of oxygen in the air through high-voltage corona. Some people think that negative ions are "vitamins in the air", which can promote metabolism and relieve tension. But what is certain is that when the amount of negative ions in the space is moderate, the air in the indoor space will be fresher, just like being in a suburban environment. In addition, negative ions also have a dust collection effect, but they are not very effective; and negative ions must be evenly dispersed into the air with the help of wind to be effective. The old generation of negative ion emitters have a greater chance of producing ozone, which causes secondary pollution.