Before understanding its advantages and disadvantages, let's take a look at its structure and basic working principle: the air purifier was mainly floor-mounted at first, and now it is wall-mounted. No matter which form, its interior is mainly composed of filter tank, fan and power supply circuit. The filter tank usually consists of a coarse filter, a high efficiency filter and an activated carbon filter.
When the user starts the air purifier, the internal motor starts to rotate, which will suck indoor air into the machine. The air first passes through the coarse filter, which will intercept the hair and some large particles of dust. Then the air comes to the high efficiency filter, which intercepts pm2.5 dust and then comes to the activated carbon filter, which mainly absorbs formaldehyde particles and odor in the air. The air treated by them is blown out from the air outlet.
Now some air purifiers are equipped with ozone generators and sterilized purple lights. When the air is filtered to absorb the odor, it will kill the bacteria in the air, and the air will circulate into the machine to achieve the function of purification and sterilization.
Disadvantages:
1, noise problem. When the machine is running, mainly after the operation generated by the fan, the airflow passes through the filter screen from the air inlet, which is ok during the day, and it will collapse in the bedroom at night.
2. The filtering effect is not ideal. It can be seen from the basic working principle that the filtering of the machine relies on the rotation of the internal motor to suck in indoor air, and the power of the motor determines the air intake and air output. Then the area of the filter screen is limited, and with the increase of time, the filtering effect will become worse and worse.
3. Replace the filter frequently. The problem is that when there is too much dust in the filter screen, it needs to be replaced. In the purifier, everything needs to be replaced except the coarse filter screen. The replacement time is directly related to the cleanliness of the user environment. Some families are 3 months, while others are 6-8 months. It costs at least several hundred yuan to replace the filter, which is why many people lament that it is cheap to buy and expensive to use.
Advantages:
1, indoor air circulation increases. With it, the indoor air will circulate internally and people will feel better air experience; Just like we use internal circulation in the car, we won't feel particularly bored.
2. The indoor pollution is reduced. The operation of the air purifier can only be said to alleviate the indoor air quality to a certain extent, because if it matches the space volume, its noise will be unbearable; Therefore, only compromise consideration can compromise its filtration effect, and the final effect is that the purification degree is not ideal.
3, easy to move, multi-purpose. Because the air purifier is floor-mounted, a family can only consider one or two, which is especially suitable for some units that need air treatment in independent space, such as the audio-visual room and mahjong room of the villa, which really achieves the effect of moving on demand.
It is concluded that the air purifier can only be used in large machines and small spaces, and the filter screen can be replaced in time to achieve better use effect. Therefore, when decorating a house, it is necessary to design and install a fresh air system. Don't expect to use it later to solve the air quality problem well.