Air sterilizing-purifying method and device

Abstract

The invention discloses an air sterilizing-purifying method. The air sterilizing-purifying method is used for carrying out sterilizing and purifying operations on indoor air. According to the air sterilizing-purifying method, a one-way air duct equipped with a negative-pressure fan is utilized as an air treatment space; a cavity is arranged on the one-way air duct; on the air outlet side, an air pressure difference is formed between a filtering structure and the negative-pressure fan as well as utilized for sterilizing and purifying air through negative iron cloud which is formed by continuously-generated negative ions in the cavity; and during the sterilizing treatment process, bacteria and viruses are adsorbed and agglomerated, agglomerate aerogel is formed in the negative iron cloud, and then the filtering structure is utilized for adsorption. The invention further provides purifying equipment based on the above air sterilizing-purifying method. According to the purifying equipment,the negative ions are generated through the utilization of ultraviolet light irradiation and ionization, and favorable factors are provided for the sterilizing and purifying treatment of the negativeion cloud through structural optimization. The air sterilizing-purifying method has the beneficial effects that the sterilizing and purifying efficiency is high; the sterilizing cost is low; the effectiveness is rapid; and the man-machine symbiosis can be achieved in a closed indoor space.

Description

technical field [0001] The invention relates to the technical field of air disinfection and purification, in particular to an air disinfection and purification method and device with better purification effect in a low flow rate environment space. Background technique [0002] In a relatively closed indoor space, in order to prevent infection and health problems that may be caused by air biological, physical and chemical pollution, more and more air purification technologies and related equipment with different air purification principles and methods have been invested. use. Different from the concept of air purification in the industrial field and the general concept of indoor air quality, the core concept of air purification in hospitals and during epidemics is disinfection and sterilization, and strict control of microbial contamination. The application trend of indoor air purification technology in hospitals in my country is actually industrial air purification. Technolo...

AI Technical Summary

Problems solved by technology

Radiation sterilization is the use of ultraviolet light of a specific wavelength to radiate energy under high voltage to kill bacteria, viruses and other microorganisms. The disadvantage is that this type of ultraviolet light will also cause damage to human eyes and skin. It needs a certain action time, and the test proves that when the ultraviolet radiation intensity is 1000μw / cm 2 Under the condition of the radiation intensity: the average time required for 100% killing of the following different bacteria and viruses is: Mycobacterium tuberculosis 12.3s, Vibrio cholerae 19.2s, Salmonella 15.3s, Salmonella typhimurium 15.9s , Staphylococcus genus 36.9s, Bacillus anthracis 9s, influenza virus 6.9s, poliovirus 24s, hepatitis B virus 21.9s, Sars virus 144s, new pneumonia virus 126s, and the circulation wind ultraviolet sterilizer commonly used in the prior art will ultraviolet The lamp tube is exposed in the air to disinfect the flowing air. The time per unit area of ​​air exposed to ultraviolet light is on the millisecond level, which makes it difficult to achieve the disinfecting effect. In addition, there are two forms of ultraviolet light disinfecting, which are produced by catalysis respectively. Ozone or photocatalyst TiO 2 Carry out photocatalytic reaction, among them, ozone catalytic sterilization is mainly to use the unstable characteristics and strong oxidation of the product ozone produced by catalysis to sterilize and disinfect. Its bactericidal effect is obvious, but it also has a great impact on the human body. It is easy to cause damage to the respiratory tract and human cells; and the disadvantages of photocatalytic reaction are similar to those of ultraviolet light radiation, which is obviously restricted by the air flow and the ultraviolet light of the light is easy to leak, which also has the problem of harm to human skin and eyes; therefore, the traditional After the ultraviolet lamp is irradiated for disinfection, it must be turned on 20-60 minutes in advance, and then the window can be ventilated before entering

[0010] Based on the above reasons, although these methods and devices designed in the prior art can effectively remove fine particles such as air dust and smoke in the air, and can also catalyze and degrade harmful gases through these methods, they cannot completely eliminate harmful microorganisms and decompose them. At the same time, it is very difficult to realize the coexistence of man and machine in a relatively confined space, especially in a confined space with high temperature and high humidity, and these greatly limit the impact of air disinfection technology on the environment in hospital operating rooms and intensive care units. The application in a relatively closed space with high air requirements will cause bacteria and virus infection accidents to occur in this type of relatively closed space due to unqualified disinfection, resulting in the failure of surgery or medical treatment.

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