In the development process of human medicine, we have been constantly fighting against infectious diseases, and constantly exploring how to eliminate and eliminate harmful microorganisms to prevent and control the occurrence of microbial infectious diseases, especially in preventing the outbreak and prevalence of infectious diseases.
Infectious diseases are diseases caused by pathogens and can be transmitted between people, animals or between people and animals. Pathogenic microorganisms causing infectious diseases include viruses, rickettsia, mycoplasma, bacteria, fungi, parasites, etc** Common infectious diseases such as influenza, hepatitis B, bacillary dysentery, meningitis, tuberculosis, acute hemorrhagic conjunctivitis, etc. SARS and H7N9 are examples of the epidemic of infectious diseases in recent years.
The medical air disinfector is used to reduce the transmission of pathogens by means of transmission routes. It is mainly used in hospital operating rooms, wards, waiting rooms and other environments where air quality and bacterial concentration need to be controlled. According to research, the elimination rate of natural bacteria in the air under static conditions of air disinfectors is more than 90%, and the control of pathogens and the protection of human beings are realized in the process of filtering air.
At present, medical air disinfectors are mainly used in three categories: 1. medical ozone air disinfectors 2. medical ultraviolet air disinfectors 3. medical plasma air disinfectors.
The medical ozone air disinfector is mainly simulated by the method of ozone generation in nature, including photochemical method, electrochemical method and corona discharge method. At present, corona discharge is a common and economic method to generate ozone in the world. It is a high-voltage corona dielectric barrier discharge, which dissociates oxygen into oxygen atoms through high-energy ions, and then combines oxygen atoms with oxygen molecules to form ozone. Ozone sterilization and disinfection is thorough, but it is harmful to human body and cannot coexist with human beings.
The medical ultraviolet air disinfector adopts the principle of ultraviolet disinfection and sterilization. The ultraviolet disinfector operates safely and reliably, but the purification effect is not particularly ideal.
The technical level and scientific and technological content of the medical plasma air disinfector are relatively high. According to the detection report of the China Center for Disease Control and Prevention, the degradation rate within 24 hours is 91% for formaldehyde, 93% for benzene, 78% for ammonia and 96% for xylene. At the same time, it can effectively remove pollutants such as smoke, smoke smell, and low energy consumption.