Evaluation and reflection of air purifiers used in fighting against COVID-19 epidemic

Air purifier is a kind of air purification device with high expectation to prevent the spread of COVID-19, however, according to the existing standards related to air purifiers, the air purifier products that have been put into the domestic epidemic prevention need to be discussed in terms of the rationality of the technology adopted, and the reliability of performance removing the 2019-nCoV virus is questionable. Discusses the characteristics of air purifier technology for preventing respiratory diseases and prospects the future application of air purifiers which can prevent epidemic diseases.