How long does it take for an air purifier to open in a day?

In theory, all appliances can operate 24 hours a day, but the appliance has a certain service life. This indicator is calculated based on time. The air purifier works uninterrupted for a long time, and the loss of the filter material is large. For example, the material that can be used for one year is replaced in only half a year or three months. It is best to use the machine when you are using it, and turn it off when there is no one. For example, if you have children, elderly people, etc. who are at home for a long time and sleep at night, you need to turn on the air purifier to be useful.

1. Is it so useful to use a large air purifier when sleeping? From the aspect of decontamination, the concentration of pollutants near the outlet of the purifier is lower, but too close to the air, the noise is  large, the room is not large, and the distance from the air purifier  has little effect on the use effect. The  air purifier works as far as possible from the person, mainly because  it will adsorb pollutants in the air around the purifier.

2. Is the far-reaching air purifier more useful? According  to the professional point of view, the air volume is only one of the  parameters of the air purifier. It is not useful for the larger the air  volume. The performance criterion of the air purifier is CADR (clean air  volume) = air volume * the purification efficiency of the purifier. The purifier effect is mainly affected by the amount of air output and the single pass removal efficiency of the pollutant. When the indoor pollutant concentration is high, a large amount of air can be opened. Generally, the air volume is reduced, the CADR is reduced, and the purification effect is deteriorated. If  the noise level is high, after the indoor pollutant concentration is  lowered, adjust to the medium and low air volume to reduce the noise.

3. How is the ratio of space and purifier matched? Is the more useful the air purifier? The large air purifier can purify the space by about 20-30 square meters, and the room size is large, at least two. In  addition, we must also examine the purification technology, the use of  passive adsorption technology, purification space reduction,  high-efficiency filtration technology, the purification area is slightly  larger. There are many factors that affect the area of use, and the use of a large purifier in a small room is better.

4. What is the relationship between outdoor air and the purification effect and service life of the far air purifier? The outdoor air is directly related to the purification effect and service life of the air purifier. Because  the outdoor air enters the room through the doors and windows, the  concentration of PM2.5 in the room has a significant correlation with  the outdoor concentration. The  outdoor concentration is high, and the more PM2.5 that enters the room,  the more the purifier is processed, the resulting purification effect  may be poor, and the service life will be shortened.