6 common problems with home air purifiers

　　When the purifier is running, the fan in the machine circulates the air in the room and the car. After the polluted air is filtered by the air filter in the machine, various pollutants are removed or adsorbed, and then generated by the negative ions installed in the air outlet. The device ionizes the air continuously, and generates a large amount of negative ions, which are sent out by the micro-fan to form a negative ion flow to achieve the purpose of cleaning and purifying the air. So what are the general problems of household air purifiers in daily life that need to be understood?

　　Can the air purifier be turned on 24 hours a day?

　　Theoretically speaking, electrical appliances can operate 24 hours without rest, but it will shorten the service life of electrical appliances, and the service life is calculated according to the usage time.

　　As far as air purifiers are concerned, after a long time of operation, the loss of filter materials is large. For example, materials that can be used for one year need to be replaced after only half a year or three months. Therefore, it is recommended to turn on the machine when there are people and turn it off when no one is there. For example, Families have children, the elderly and other people at home for a long time, then can open it.

　　When we sleep, should the purifier be near or far from people?

　　From the perspective of pollution removal, the closer to the air outlet of the purifier, the lower the concentration of pollutants. The concentration has little effect. Therefore, it is still recommended that when the air purifier is working, it is a little farther away from people, which may adsorb pollutants in the air to the surroundings of the purifier.

　　The bigger the air flow, the better?

　　Neither is this. Because the air output is only one of the many parameters of the air purifier, it is not that the larger the air output, the better. The performance evaluation index of the air purifier is CADR (clean air volume) = air output × one-pass purification efficiency of the purifier, so the effect depends on the air output and the single-pass removal efficiency of pollutants. Therefore, when the indoor pollutant concentration is high, a large air volume can be turned on. Generally speaking, when the air volume is reduced, the CADR is also reduced, that is, the purification effect is deteriorated. If the noise is high, you can switch to medium and low air volume when the indoor pollutant concentration is reduced to reduce noise and loss.

　　How to determine the number of purifiers?

　　This obviously involves the size of the room. According to the research, the preliminary conclusion is that the applicable area = 0.CADR (clean air volume). That is, the CADR value is 100 cubic meters per hour, and the applicable indoor area can be approximately taken as: 15 square meters. It is recommended that consumers choose a clean air volume of more than 200 cubic meters per hour, which is suitable for use in 20-30 square meters. If the CADR value is lower than 200, or even lower than 100, the purification effect may be very general. At this time, it is necessary to increase the number.

　　Does the purification effect have anything to do with the outdoor air?

　　Of course this is directly related. This is because outdoor air enters the room through doors and windows, and the indoor PM2.5 concentration has a significant correlation with the outdoor concentration. Therefore, if the outdoor concentration is high, the more PM2.5 will enter the room, so that the processing capacity of the purifier will increase, the purification effect may be worse, and the service life will be shortened.

　　How should we judge the frequency of changing the filter element?

　　For some purifiers with an alarm function, we can change them according to the alarm function or product prompts. Some tips for changing the filter element are based on time, but they are often not. Because the air quality is too poor, the life of consumables will be reduced; When there are too many pollutants in it, it will cause resistance to the air, which will activate the pressure sensor, but the general air purifier will be installed. Of course, you can also change the filter according to your own life experience.

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