对于空气净化器而言，不同产品的工作原理也是不尽相同的。根据工作原理，空气净化器可以分为主动净化式和被动净化式两种，这两种不同工作方式的产品，占据了市场中的绝大多数份额。除此之外，还有一些厂商推出了集两种功能与一身的空气净化器产品。其中最为常见的是主动净化式空气净化器，这一类产品，通常是采用了内置风机设计。其工作原理是将室内污浊的空气吸入到净化器中，通过净化器的内置的三重过滤网，实现过滤、吸附污染物从而净化空气的功能。通常情况下，这一类空气净化器包含胶化棉粗过滤网、HEPA过滤层以及催化过滤层三层滤网。对于主动净化式的空气净化器来说，滤网的好坏起到了关键作用，因此大家在购买产品的时候，要多加注意滤网的细节，比如滤网中的活性炭颗粒是否足够多。 For air purifiers, different products work in different ways. According to the working principle of purification type air purifier can be divided into active and passive purification type two kinds, the two different work products, the vast majority of occupy the market share. In addition, there are a number of companies that have launched air purifiers for both functions. The most common is the active purification air purifier, which is usually designed with a built-in fan. Its working principle is to indoor air suction to the purifier, through the purifier built-in triple screen pack, we can realize the function of filtration, adsorption of pollutants so as to purify air. Typically, this type of air purifier consists of a gel-cotton swainer, a HEPA filter layer, and a three-layer filter of the catalytic filter layer. For active purification type air purifier, the stand or fall of mesh played a key role, so everyone at the time of purchase products, will pay more attention to the details of the filter, such as mesh of the activated carbon particles is enough.