空气净化器通常由高压电路、负离子发生器、通风机、空气过滤器等系统组成。净化器运行时，机器内的通风机使室内、车内空气循环流动，污染的空气通过机内的空气过滤器过滤后，将各种污染物清除或吸附，然后通过装在出风口的负离子发生器将空气不断电离，产生大量负离子，被微风扇送出，形成负离子流，达到清洁、净化空气的目的。

Air purifier is usually composed of high voltage circuit, negative ion generator, ventilator, air filter and so on. Purifier running, ventilation machine in the indoor, car air circulation, polluted air through air filter machine after various pollutants removal or adsorption, and then installed in the outlet of the negative ion generator air ionization continue to produce a large number of negative ions, micro fan, formation the negative ion current, to achieve clean air purification purposes.