- Principle of Passive Adsorption Filtration Air Purification
Passive air purification is to use a fan to draw air into the machine and filter the air through the built-in filter screen, which can mainly filter dust, odor, disinfection, etc. This filter screen type air purifier uses HEPA filter screen+activated carbon filter screen+photocatalyst (cold catalyst, faraway catalyst)+ultraviolet disinfection+electrostatic adsorption filter screen and other methods to treat air. Among them, HEPA filter screen has the function of filtering dust particles, while other activated carbons mainly have the function of absorbing odor. Therefore, it can be seen that the working principles adopted by air purifiers with fan filter screen, photocatalyst, ultraviolet, static electricity and other different labels on the market that look very chaotic are basically the same, and they are all passive adsorption filtering air purification.
- Active air purification principle
The fundamental difference between the active air purification principle and the passive air purification principle is that the active air purifier gets rid of the restrictions of the fan and filter screen. Instead of passively waiting for indoor air to be pumped into the purifier for filtering and purification, and then discharging it through the fan, the active air purifier effectively and actively releases purification and sterilization factors into the air through the characteristics of air diffusion, Arrive at all corners of the room to purify the air without dead space. At present, the relatively mature active purification technology in technology is the plasma air disinfection technology, which mainly uses the plasma tube of the plasma air disinfection device to generate a large number of positive and negative ions. The charged ion clusters actively attack the virus and bacteria, destroy the cell membrane, the DNA and protein of the virus, and rapidly inactivate the air bacteria and viruses until they are killed and decomposed.