To choose the right air purifier for you, we first need to understand the air purifier technology. Therefore, let's first summarize the technologies currently used in air purifiers on the market, as well as the latest developments in air purification technology.
1. Air purifier technology and development
People's initial requirement for air purification is to filter coarse particles such as dust, pollen and hair, and the application of coarse and high-efficiency filters can well meet this requirement, and the high-efficiency filters are even for PM25. It also has a good filtration and purification effect. In recent years, SARS and the new coronavirus, and the flu have also occurred from time to time, people hope that the purifier can be used for air disinfection and sterilization, and manufacturers have reduced the pore size of the filter and added activated carbon filters to filter out bacteria and viruses in the air. However, it causes the accumulation and reproduction of bacteria and viruses on the surface of the filter screen, forming a new source of pollution. Recently, the risk of bacterial reproduction can be alleviated by antibacterial treatment on the surface of the filter, but with the failure of the antimicrobial agent and the accumulation of bacteria in multiple layers, the surface antibacterial treatment of the filter screen still cannot solve the problem.
There have also been ozone disinfection and sterilization air purifiers on the market for a short time, but due to the odor and harmfulness of ozone, it is just a flash in the pan. Ultraviolet rays have a sterilization function, but short-wave ultraviolet rays will also produce ozone, due to the strong market demand for disinfection and sterilization, light source companies have developed ozone-free ultraviolet lamps, they have a good killing effect on bacteria, as long as the equipment is designed to solve the problem of ultraviolet leakage, and the high-efficiency filter can finally solve the problem of air disinfection and sterilization.
With the progress of society, people's requirements for the living environment have gradually improved, and the decoration of HOS has become more diversified, high-grade and complex, making people's lives more convenient and the environment more pleasing to the eye, but it has also brought a large number of organic volatile pollutant gases, including formaldehyde, benzene and VOCs, etc., which have seriously threatened human health and also posed a challenge to air purifier technology. Although activated carbon adsorbents can temporarily remove some pollutants, there are many defects: adsorption saturation, low adsorption rate of some non-polar gases, easy adsorption of water vapor and quick failure, etc.
In the past decade, nanotechnology has become more and more widely used in all aspects of daily life, showing huge market potential. The air purifier manufactured by nano photocatalytic technology not only achieves sterilization and virus killing, but also efficiently photocatalytic detoxification and removal of air pollutants, and can also continue to release negative oxygen ions, which are known as "longevity".
Second, the purchase of air purifiers
After understanding the technical principle of air purifiers and the latest development of purifier technology, let's determine the precautions for purchasing purifiers.
1. Only need to filter dust, pollen and hair, etc.: choose a traditional filtering air purifier, which is cheap.
2. Dust filtration, sterilization and purification of pollutants are required: choose a high-efficiency filter and an activated carbon purifier, and pay attention to changing the filter frequently. Of course, you can also choose to apply photocatalytic technology air purifiers, which have higher performance.
3. It is required to purify the air, sterilize and kill viruses and improve air quality, and choose a nano photocatalytic purifier. If there are other special requirements, such as: man-machine coexistence air disinfection and sterilization, increase human immunity, respiratory diseases, and health preservation places, you can only choose nano photocatalytic purifiers.
Other precautions: the size of the applicable space, mute requirements, whether remote control language control is required, etc. Whether there are requirements for the placement of the equipment, such as standing, movable or wall-mounted.