.被动吸附过滤式的空气净化原理 . The principle of air purification of passive adsorption filtration 被动式的空气净化，是用风机将空气抽入机器，通过内置的滤网过滤空气，主要能够起到过滤粉尘、异味、消毒等作用。这种滤网式空气净化器多采用HEPA滤网+活性炭滤网+光触媒（冷触媒、多远触媒）+紫外线杀菌消毒+静电吸附滤网等方法来处理空气。其中HEPA滤网有过滤粉尘颗粒物的作用，其他活性炭等主要是吸附异味的作用，因此，可以看出，市面上带有风机滤网、光触媒、紫外线、静电等各种不同标签、看似十分混乱的空气净化器所采用的工作原理基本是相同的，都是被动吸附过滤式的空气净化。 The passive air purifying is to use the fan to pump air into the machine, through the built-in filter filter air, mainly to be able to filter the dust, odour, disinfection and other functions. This type of filter air purifier adopts HEPA filter + activated carbon filter + photocatalyst (cold catalyst, multi-contact) + ultraviolet sterilization + electrostatic adsorption filter and other methods to process air. The HEPA filter has the effect of filter dust particles, the role of other mainly such as activated carbon adsorption odor, therefore, you can see, on the market with a fan filter, catalyst, ultraviolet light, such as electrostatic various labels, seemingly very chaotic air purifier working principle is basically the same, are passive adsorption filtration of air purification. 2.主动式的空气净化原理 2. Principle of active air purification 主动式的空气净化原理与被动式空气净化原理的根本区别就在于，主动式的空气净化器摆脱了风机与滤网的限制，不是被动的等待室内空气被抽入净化器内进行过滤净化，之后再通过风机排出，而是有效、主动的向空气中释放净化灭菌因子，通过空气弥漫性的特点，到达室内的各个角落对空气进行无死角净化。目前在技术上比较成熟的主动净化技术主要是利用负氧离子作为净化因子处理空气和利用臭氧作为净化因子处理空气两种。这两种就是典型的基于主动净化原理而进行工作的空气净化器。 Air purification principle of the active and passive air purification principle of fundamental difference is that the active air purifier get rid of the limitation of the fan and mesh, not passively waiting for indoor air is pumped into the purifier filter purification, and then through the fan, but effective and active purification sterilization factors that are released into the air, the characteristics of diffuse through the air to reach every corner of the indoor no dead Angle of air purification. At present, the active purification technology which is relatively mature in technology mainly USES negative oxygen ions as purification factor to process air and use ozone as purification factor to treat air two kinds. These two are typical air purifiers based on the principle of active purification.