The requirement for DC fans for air purifiers is relatively high, and most of them are used in the city or in cars. Therefore, the requirements for noise are relatively quiet, and if the air leakage rate is fast, then DC fans are required. The fan has a large air volume, so the fan used in the air purifier has two main characteristics: high air volume, quiet

If it is powered by a battery, the current of the DC fan can be reduced by half