15 years of grinding a "device"!Central China Greater Development of New Plasma Air Purifier

The Yangtze River Daily Da Wuhan Client July 6th. On July 4th, Professor Lu Xinpei and Academician Pan Yuan of the School of Electrical and Electronics Engineering of Huazhong University of Science and Technology announced that it has successfully developed a new type of plasma air purifier. After testing and certification, the device's anti -kill rate of influenza virus (H1N1) in the air exceeded 99.99%. It was very broad in prevention of prevention and disinfecting in public places such as hospitals, aircraft, high -speed rail, classrooms, and theaters.

Sample machine design renderings.

The pathogenic microorganisms are one of the ways to spread a variety of infectious diseases. At present, the commonly used pathogenic microbial air -solid solidar anti -killing methods include ultraviolet (UV) sterilization lamps and high -efficiency air filters (HEPA). However, UV (UV) sterilization lamps can damage vision and harm to the skin, and can only carry out the disinfecting work in the case of no one indoor, while high -efficiency air filters are only filtering instead of disinfecting.

Scientists have found that the high concentration and multiple high -active ingredients produced by plasma can achieve efficient killing of pathogenic microorganisms. However, the plasma may release harmful gases while killing pathogenic microorganisms, such as ozone. Therefore, how to control the harmful gas concentration released by a plasma air purifier to the scope of the national standard is the difficulty of the academic community to solve.

At present, the plasma air purifier on the domestic market mainly uses a discharge power of about 10w or even lower point/wire electrode halo plasma. Although the concentration of harmful gas generated is not high, it can only generate low -density strip particles. At the same time, due to the at the same time Its active ingredient concentration is low, so it can only intercept pathogenic microorganisms and cannot disinfect.

The Low -temperature plasma laboratory of the School of Electrical and Electronic Engineering of Huazhong University of Science and Technology adopts a unique multi -stage discharge plasma technology based on the atmospheric pressure air -based multi -level discharge plasma technology. By regulating the stability of the discharge channel, it solves the technical bottleneck of low -efficiency efficiency under the conditions of the actual application. Fundamentally solved the limitations of traditional HEPA purification and only interception. This technology controls the changes between plasma activity and multi -dimensional parameters by controlling plasma parameters, and finally realizes the flexible control of the active ingredients, maintains a lower ozone concentration while generating high -density active ingredients, and uses the height of the plasma to high The density with the charged particles to achieve a combination of physical+chemicals to kill the virus gas solution and achieve a one -time killing of the pathogenic microbial air -solid oscillated.

Traditional air purification methods have the defects and deficiencies of ultraviolet and HEPA filtering.

Based on this technology, the team has developed a new type of plasma air purifier. At present, the technical route demonstration and prototype test have been completed. %, And other harmful gas concentrations, including ozone concentration, meet the requirements of national standards. In the next step, the team will modularize the ionic air purifier to make it adapt to the central air -conditioning and air outlets of high -speed rail, aircraft and hospital ward/clinics; Different use environments, develop medium and large plasma air purifiers.

It is reported that since 2007, the low -temperature plasma laboratory of the School of Electrical and Electronic Engineering of Huazhong University of Science and Technology has carried out research on the use of plasma to eliminate the pathogenic microorganisms, and various active components of the ionic eliminating virus and bacteria. Including a variety of electrical particles, stimulating state particles, multi -active oxygen particles (ROS), electric field, ultraviolet rays and other ingredients, systematically develops systematic research. Related results are published in many well -known journals at home and abroad.

(Changjiang Daily reporter Chen Xiaotong correspondent Wang Weizhen Guo Yuchen)

【Edit: Zheng Xiaoxiao】

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