See if you choose the right air purifier?Air purifier.Car Air purifier Factory

　　Faced with increasingly serious air pollution, for our health, "wearing a mask when going out and cleaning at home" has gradually become a standard for people's breathing.

　　But when it comes to air purifiers, the various models and intricate functions on the market are always dazzling. I don’t know how to choose the one that is suitable for my family. I don’t know how to choose the one that I bought. Is it right?

　　Seeing that the display of fireworks and firecrackers during the Spring Festival will bring a new round of "explosive" air quality, it is also time to take a good look at the purchase guide for air purifiers.

　　Like air conditioners, the selection of air purifiers should also follow the principle of housing area. Introduce a term here called CADR (Clean Air Delivery Rate), which is an important indicator that the new national standard of air purifiers issued last year clearly requires marking, and it represents the purification efficiency of air purifiers. The unit of CADR is m/H. The higher the value, the higher the purification efficiency of the air purifier.

　　If you want to calculate the CADR value of an air purifier suitable for your room, we can use an approximate algorithm, that is, the applicable area = CADR*0.1. Assuming that the CADR of an air purifier is 300m/H, it can be used in a room of 30 square meters.

　　In addition, noise is also a problem that cannot be ignored. Although some products have higher CADR values, they have paid the price of high noise. You also need to compare the noise value of the same or similar CADR products, and whether there is a silent mode and so on.

　　After determining the size of the room, the choice of air purifier is considered preliminary.

　　What is the purpose of buying a purifier?

　　After that, we have to determine what is the purpose of buying a purifier, that is, to determine the pollutants... Well, maybe everyone thinks that this sentence is meaningless: of course it is to remove all kinds of PM2.5 and PM10 pollution in the haze. Things! Almost 100% of our current reasons for buying air purifiers are to combat smog, but it is still necessary for us to understand the characteristics of different air purifiers and see which ones are suitable for us.

　　In addition to PM2.5, in addition to formaldehyde, or sterilization? These three purposes have completely different requirements for air purifiers.

　　As the name suggests, the diameter of PM2.5 particles is 2.5 microns, and the diameter of microorganisms such as general bacteria and viruses is 0.5-0.05 microns, while the diameter of formaldehyde molecules is only 0.5 nanometers! Take the HEPA filter type air purifier as an example. The performance of the HEPA filter plays a decisive role in air filtration (this point will be explained later). Although PM2.5 is our most well-known and most important pollutant, it is still the easiest to remove compared to microorganisms and formaldehyde. Qualified products and HEPA filters on the market can remove PM2 extremely effectively. 5. Although the microorganisms are small, they generally need to be attached to the particles to float and spread, so the difficulty of removal is not much different from that of PM2.5.

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