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source:Optimization dedicated release time:2021-12-21 Hits: Popular:aromatherapy diffuser direct sales
According to the working principle of the air purifier's filter as the basis for purification, it is enough to know the combination of air purifier = fan + filter, the core of which is the filter, which is determined by the different materials and layers of the filter. How clean can the air sucked into the machine be filtered. The fan determines the speed of purifying the air and the noise level of the machine!
At present, there are many varieties and specifications of indoor purifiers, which are mainly summarized as follows.
1. Passive adsorption air purifier
Working principle: Use a fan to draw air into the machine, and filter dust and bacteria through the built-in filter, so as to achieve the goal.
Advantages: According to the filtering accuracy of different filter screens, it is very specific to pollutants, the purification effect of particles above PM2.5 is significant, the purification speed is high, the efficiency is high, and the main investment cost is low.
Disadvantages: mainly for particles below 0.3 microns that cannot be removed, and because of the fan equipment, there is a small amount of noise, high power consumption, and regular replacement of the filter element is necessary, which is easy to cause two pollutions and increase supply costs.
2. Active air purifier
Working principle: Contrary to the former, it does not inhale and filter, but releases purification and sterilization factors into the air to achieve the purification effect.
Advantages: It is very effective for the precipitation of small particles. It can quickly decompose formaldehyde, benzene and other VOC toxic gases. There is no need to replace the filter. The maintenance cost is low. Because it does not need a fan to inhale, it has low noise and low power consumption. It can run all day, at the same time It can release the negative oxygen ions of the negative ion air purifier and improve the body's immunity.
Disadvantages: Ozone will be generated when negative ions decompose. Compared with passive purifiers, active test purifiers have their purifying effect limited by indoor air circulation, and are low in efficiency and high in cost.
3. Compound air purifier
Combining active and passive, firstly, passively inhale and filter to achieve the purpose of basic elimination and purification; secondly, actively purify dust and bacteria in all directions to achieve the purpose of eliminating formaldehyde and inhalable particles.
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