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source:Optimization dedicated release time:2022-06-25 Hits: Popular:aromatherapy diffuser direct sales
Users who know a little about air purifiers must know that the principle and structure of most air purifiers on the market are not complicated, and the main part is composed of motors, fans and filters. When working, the fan blades are driven by the motor to circulate the air in the room. When the air with pollutants passes through the filter screen inside the purifier, it will be adsorbed on the filter screen and cannot pass through. The purpose of purifying indoor air is the principle of passive adsorption filter air purifier, and it is also the method used by most air purifiers on the market.
The primary requirement of users for air purifiers is to remove PM2.5, so air purifiers are equipped with HEPA filters to filter particles in the air. Since it is relatively easy to filter particles with a diameter of 0.5 μm or more and less than 0.1 μm in the air, while particles with a diameter of 0.1 μm to 0.3 μm are relatively more difficult to remove, so the industry is defined by the filtration rate of 0.3 μm particles. HEPA filter rating.
Therefore, the CADR value is introduced in the international standard of air purifier to represent the volume of air that can be purified per unit time. The higher the CADR value, the higher the purification efficiency of the purifier.
Although the way to remove formaldehyde is ventilation, you can often see the formaldehyde removal function of air purifiers. In passive adsorption filter air purifiers, this function is also achieved through the filter. Formaldehyde itself is also a gas, so the HEPA filter cannot be effective at this time, but a layer of activated carbon filter is added to remove formaldehyde by adsorbing formaldehyde.
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