Anion generator is a device that generates air negative ions. After the input DC or AC power is processed by the EMI processing circuit and the lightning protection circuit, it passes through the pulse circuit to limit the overvoltage and current; the high and low voltage isolation lines are upgraded to AC high voltage , and then rectified and filtered through special grade electronic materials to obtain pure DC negative high voltage, connect the DC negative high voltage to the release tip made of metal or carbon element, use the tip DC high voltage to generate high corona, and release a large number of electrons (e- ), and electrons cannot exist in the air for a long time (the lifespan of the existing electrons is only nS level), and will be immediately captured by oxygen molecules (O2) in the air, thereby generating negative air ions.

The negative ions released by the anion generator can charge the dust, germs, spores, pollen, dander and other particles in the air, and then be adsorbed by the discharge integrated device. It cannot filter solid particles smaller than the filter hole, let alone filter gaseous pollutants) or adsorption (such as activated carbon and other materials only have selective adsorption function) and other purely physical effects.