The air purifier is applied in the field of home, medical, and industrial. The home field is based on single -machine home air purifiers as the mainstream products of the market. The main function is to remove particulate matter in the air, including allergens, indoor PM2.5, etc. At the same time, it can also solve the problem of air pollution of indoor, underground space, and volatile organic air pollution caused by decoration or other reasons. Because the release of air pollutants in a relatively closed space has the characteristics of durability and uncertainty, the use of air purifiers to purify indoor air is one of the internationally recognized methods to improve indoor air quality.