Is the air purifier effective?

　　Is the air purifier effective?

　　In the face of indoor air pollution, many propagandists will mention air purifiers, so are air purifiers really useful? After many practices and theories have proved that air purifiers can help intercept harmful substances in the air, but is it true? Isn't it a psychological comfort? Look at these and you will know the truth!

　　Principle of air purifier: The air purifier absorbs air into the interior through internal devices, purifies, intercepts, purifies, reduces harmful substances, and releases healthy air. The air purifier circulates harmful substances through the indoor air, so the working environment needs a closed space, so the doors and windows cannot be kept open all the time.

　　According to the four indicators of air purifiers, namely CADR (clean air volume), CCM (cumulative purification volume), energy efficiency level and noise standards, some related functions and performance can be understood.

　　Looking at the CADR value, I know that the purification efficiency is not high.

　　CADR value, also known as clean air output ratio, refers to the total amount of clean air filtered by the air purifier per unit time, in cubic meters per hour (m/h), including the CADR value of particulate matter and the CADR value of formaldehyde.

　　The amount of air that an air purifier can purify in an hour can be used to measure the purification efficiency of this air purifier. If the product is marked with a CADR value of 310 m/h, it means that the air purifier can purify 310 m particles in one hour, which is the CADR value of formaldehyde.

　　So some friends said that the higher the CADR value, the better the purification efficiency of the machine. Why not just choose the CADR value machine when you buy it?

　　Of course not, it should be selected according to the size of the space used, according to the calculation method of the new national standard: applicable area = CADR value x (0.07~0.12), such as an air purifier with a CADR value of 500, the applicable area is 35 square meters to 60 square meters about.

　　If you choose a purifier with a high CADR value to be used in a house of 20 square meters, it will be a waste, and the air purifier will not work. Therefore, as long as the purification rate of the product can meet the needs of the room, an air purifier with a high CADR value is not selected.

　　Look at the CCM value to know whether the purification ability is strong or not.

　　The Chinese name of 　　 CCM is the cumulative purification amount, which refers to the total weight of the pollutants (particulate matter or formaldehyde) that are cumulatively purified when the CADR value decays to 50, and the unit is mg. It represents the continuous purification capacity of the air purifier, and can also be understood as the service life of the filter. Simply put, the larger the CCM value, the longer the service life of the air purifier filter.

　　The CCM of "particulate matter" is represented by P, and is divided into four levels from high, namely P1, P2, P3 and P4. The higher the level, the stronger the purification ability, which is P4. Formaldehyde CCM is represented by F, and is also divided into four grades, F1, F2, F3, and F4, from high to F4.

　　If the CADR value is compared with the speed of the car, then the CCM level can measure how much cargo the car can pull. Air purifiers with higher CCM grades can accumulate and absorb more pollutants, and the replacement cycle becomes longer, but the corresponding filter price also increases. Therefore, it is necessary to comprehensively consider the filter replacement cycle and price, but the CCM grade is too low. Is undesirable.

　　Look at the level of energy efficiency and see if you can save electricity.

　　When we buy refrigerators and air conditioners, we generally look at the energy efficiency level, and the air purifier is also the energy efficiency level. If we want to keep the air purifier running for a long time, we choose it, so as to save money. Therefore, under the premise of the air purification effect, try to choose products with high energy efficiency and power saving, and you will cry afterwards.

　　See if the purifier works quietly.

　　If a purifier has the ability to purify, but its noise affects our normal work and rest, it is not dispensable. For people who are sensitive to noise, pay more attention to the noise performance of the air purifier.

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