There are divergent opinions on the air purifier market.air purifier covid Processing

　　Different technologies of air purifier manufacturers have existed in the market for many years and have been in peace, but since this year, some companies have begun to publicly accuse products of different technologies for such shortcomings. For example, at the first annual meeting of the air purifier industry, a representative of a company that mainly promotes physical filtration products emphasized that the brand's products have always adhered to real materials in the use of adsorbent materials, and pointed out the ozone problem of electrostatic dust collection products. And the relevant standards of the United States have increased the ozone emission limit index for this purpose; and in the 2015 World Green Design Forum Green Appliances Sub-forum, there are representatives of enterprises of electrostatic dust collection products, emphasizing that the harm of ozone is completely controllable and controllable. At the same time, it also pointed out that the need to replace consumables for physical filtration products will not only increase the cost of consumers' use, but waste consumables will also pollute the environment. At the same time, if the consumables cannot be replaced in time, it may cause secondary pollution to the air.

　　During the interview, when the reporter consulted the relevant staff of the Secretariat of the China Air Purification Industry Alliance on this issue, the staff member admitted with a wry smile that although this industry has just emerged, the different technical camps are not working together to make the market bigger and bigger. Strong, but to fight for a larger share. Experts No technology can dominate the rivers and lakes

　　"Any kind of technology is impossible to conquer the world. The key issue is that the products consumers buy are useful; at the same time, the harm of related defects can be controlled within a reasonable range through normal maintenance and maintenance." Chinese Center for Disease Control and Prevention Dai Zizhu, a researcher at the Institute of Environmental and Health Product Safety, emphasized that there are many types of indoor air pollution, and they are all released continuously. Therefore, it is impossible to completely solve the problem after a period of time. At the same time, although technological progress has continuously enhanced the purification capacity of air purifiers, different purification technologies are still not perfect.

　　Chen Jian said that activated carbon has a highly developed pore structure, which can fully contact with gas or impurities to achieve adsorption; HEPA filter uses a special woven structure to form a large number of air vortexes to absorb ultra-small particles. However, due to environmental changes such as temperature and humidity, the impurities adsorbed by activated carbon will gradually escape; HEPA filters are also prone to bacteria, so physical purification technology requires regular cleaning and replacement of filters. Negative ions actively capture harmful substances in the air, and form molecular clusters with floating dust to sink to the ground, making bacteria and viruses less viable or lethal; electrostatic dust collection technology generates electrons from the discharge electrode plate, so that the dust impurities in the air are charged and adsorbed on Dust collecting electrode plate. But at the same time as the air ionizes, extremely strong current will release ozone, etc. Ozone will stimulate the human mucous membranes, and if it is not well controlled, it will cause harm to the human body. On the other hand, ozone is also a strong oxidant, which is harmful to electrical products. Both rubber and plastic will have adverse effects, and may bury potential safety hazards over time. Air purifier manufacturers

　　Photocatalyst technology uses nanomaterials as catalysts to catalyze and oxidize harmful substances such as bacteria, viruses, and formaldehyde under the irradiation of sunlight or ultraviolet lamps to decompose formaldehyde into carbon dioxide and water. Nanomaterials only act as catalysts and will not change themselves, but the cost is relatively high and the purification speed is relatively slow. "If there is one technology that is perfect, there will not be so many technologies coexisting." Deng Gaofeng, director of the Low Carbon Building Research Institute of the Chinese Academy of Building Research, believes that at present, any technological product must be used under supervision. For example, the filter screen is regularly replaced, and the electrostatic dust collection products also need to be cleaned and maintained regularly. If the product can control the hazards within the range allowed by the relevant standards, consumers do not need to worry too much.

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