Which types of air purifiers do you know?

　　An air purifier is a machine that disinfects and sterilizes air. In addition to killing bacteria, viruses, etc., some models can also remove formaldehyde, phenol and other organic pollutants in the indoor air, remove PM2.5, and can also filter allergens such as pollen. At the same time, it can effectively remove the smoke and smoke generated by smoking, the bad smell of the bathroom, and the human body odor.

　　Ozone disinfection: In the process of ozone disinfection, humans and machines cannot coexist while the machine is in use. After the machine is turned off, there is no smell entering the room. Because ozone is still very irritating to the human respiratory tract, especially the elderly and children should pay attention!

　　Ultraviolet disinfection: It is mainly used for laboratory disinfection, etc., turning on ultraviolet disinfection in an unmanned laboratory, through a certain period of radiation, it can kill the natural bacteria and viruses suspended in the air.

　　Photocatalyst sterilization: the photocatalyst filter screen is irradiated by ultraviolet light. After ultraviolet irradiation, the transition process of ions such as nano-TiO2 coating is caused to produce molecules similar to hydroxyl radicals, which oxidize and kill viruses in the air, but there are also blowing out. Wind will cause odor problems due to intermediate products of photocatalyst.

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