The advantages and necessity of installing an air purifier

　　Living things on earth need to breathe every minute and every second, and clean air is particularly important for health. Now, we spend most of our time in indoor places, such as homes, schools, and offices. However, a contaminated indoor environment can cause a series of adverse reactions, such as headaches, eye discomfort, breathing difficulties, skin allergies, etc. Sensitive people, such as children, the elderly, respiratory or heart disease patients, are more likely to be affected. To indoor pollutants. Improving indoor air quality can reduce discomfort. Fresh and clean air is very important to people. For schools, it can reduce the probability of cross-infection among students; for companies, employees can reduce the number of sick days; for families, it can provide family members with more health protection

　　Professional air purifiers have a certain effect on suppressing the spread of viruses. The team of Professor Hua Shucheng of the First Hospital of Jilin University collected samples of air, surface of objects, door handles, etc. from the isolation ward, fever clinic, and guidance desk of the First Hospital of Jilin University, as well as medical staff who had close contact with patients with the new crown. RT-PCR method detects the nucleic acid of the novel coronavirus in the sample. The test results showed that the new coronavirus was detected on the surface of the nurse station in the quarantine area of the suspected patient and in the air of the intensive care unit.

　　The National Health Commission's "New Coronavirus Pneumonia Diagnosis and Treatment Plan (Trial Seventh Edition)" has added new transmission routes for new coronary pneumonia. In addition to the existing respiratory droplets and close contact transmission routes, in a relatively closed environment, long-term exposure to high-concentration aerosols may be transmitted through aerosols.

　　So, how does the air purifier realize air disinfection? In fact, these two methods are irrelevant. The most common one is that the inhaled dust particles are blocked by the filter; secondly, the inhaled dust particles are charged by the magnetic field and then adsorbed on the electrode plate. Through this working principle, the “dirty” air containing floating dust sucked into the sterilizer becomes dust-free “clean” air after passing through the sterilizer. The microorganisms in the air are sucked into the sterilizer and "stay" in the sterilizer. After running for a period of time, the number of dust particles in the air of the target room gradually decreases, and the air becomes fresher. Therefore, the air hygiene indicators have also improved. However, the filters and electrode plates in the sterilizer will eventually “saturate”. The length of the "saturation" period depends on the hygienic quality of the environment where the sterilizer is located, that is, the worse the environmental sanitation quality, the faster the "saturation" period will come. Once the sterilizer enters the "saturation" period, its "disinfection" function will disappear.

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