What factors affect the effect of air purifiers.air purifier covid

　　The effect of the air purifier is affected by four factors: the degree of sealing, the quality of the filter, the size of the air volume, and the matching of the air volume with the filter.

　　Poorly sealed purifiers, because the polluted air cannot be filtered through the filter, the single-time purification efficiency must be low;

　　A purifier with a bad filter, such as a thin filter, will not only have low purification efficiency, but may even cause secondary pollution;

　　Strong air volume is the third key element of top air purifiers! Only when the air volume is large enough can the indoor air be fully circulated. Otherwise, even if the single purification effect is good (such as zero particles at the air outlet), if the air output is only 30-40 cubic meters per hour, then even if it is used in a small bedroom of 10 square meters, its purification effect is also Extremely limited

　　Effective matching of air volume and filter is also a key element of top-level air purifiers: if the air volume is too small, the indoor air cannot be fully circulated; if the air volume is too large, the polluted air will pass through the filter for a short time, resulting in poor filtering and adsorption effects. Especially large pollutants will pass through the first few levels of filters and then penetrate the HEPA filter!

　　Professional air purifiers like ours, precisely because they are absolutely sealed, have a heavy filter screen, a strong air volume, and a good match between the filter screen and the air volume Z, so its purification effect is much better than ordinary air purifiers.

　　Air purifiers are a common type of air purification device in centralized air conditioning and ventilation systems. The purification efficiency of particulates is an important evaluation indicator. It is of great significance to scientifically evaluate the purification effect of air purifiers on particulates. One electrostatic air purifier is the research object. , Select KC1 aerosol and loess dust as the detection dust source, respectively study the influence of dust source type, dust source concentration and wind speed on the purification effect of particulate matter. The result is that when the sampling loess dust is the dust source, the purification efficiency is slightly higher, and the pM10 counts The weight efficiency is relatively close to the counting efficiency of particles ≥0.3μm. The concentration of dust sources has little effect on the weight efficiency, and the wind speed is an important factor affecting the purification efficiency.

　　The working principle and comparison of two kinds of purifiers

　　Although the types, names, and functions of air purifiers on the market are not the same, there are not so many types in terms of their principles. In principle, air purifiers can be divided into two types, one is the principle of passive adsorption and filtration. The other is the principle of active air purification. Let's take a closer look at what these two principles are.

　　Principle of passive adsorption filter air purifier

　　Passive air purifiers mainly use fans to draw air into the machine, and then filter the air through a built-in filter, which can filter dust, odors, and disinfect. Filter-type air purifiers mostly use HEPA filter + activated carbon filter + photocatalyst (cold catalyst, how far away the catalyst) + ultraviolet disinfection + electrostatic adsorption filter and other methods to process the air. The HEPA filter has the function of filtering dust particles, and the activated carbon and other substances mainly absorb toxic and harmful substances such as peculiar smell.

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