Plasma sterilization and disinfection cabinet and disinfection method

Abstract

The invention discloses a plasma sterilization and disinfection cabinet and a disinfection method. The plasma sterilization and disinfection cabinet comprises a plasma generation module, a power supply module, an airflow module and an atomization module. The plasma generation module comprises an air chamber, wherein a discharge assembly is arranged inside the air chamber, and the air chamber is provided with an air outlet and an air inlet. High-voltage power is supplied to the discharge assembly by the power module. The airflow module conveys plasmas inside the air chamber into the sterilization space, and the atomization module inputs mist into the sterilization space. The plasma generation module comprises an initial discharge stage and a stable discharge stage, wherein the air chamber is closed during the initial discharge stage, and the air chamber is opened during the stable discharge stage. Mist generated by the atomization module reacts with plasma to generate strong oxidizing active particles, and the ozone concentration is reduced and the sterilization rate is increased. The disinfection cabinet can input plasmas with low ozone concentration into the sterilization space torealize sterilization.

Description

technical field [0001] The invention relates to the technical field of disinfection cabinets, in particular to a plasma sterilization disinfection cabinet and a disinfection method. Background technique [0002] Disinfection cabinets generally use ultraviolet light, high temperature, ozone and other methods for sterilization and disinfection. The scope of ultraviolet disinfection is limited and the disinfection is not complete. High-temperature disinfection consumes a lot of energy, and some plastic kitchen utensils that are not resistant to high temperatures cannot be subjected to high-temperature disinfection. Although ozone has a significant sterilizing effect, it has a strong pungent odor and certain toxicity. Excessive ozone will strongly stimulate the human respiratory tract, causing symptoms such as sore throat, chest tightness and coughing, and may cause bronchitis and emphysema; working in a high-concentration ozone environment for a long time will cause human neu...

AI Technical Summary

Problems solved by technology

[0006] The method of increasing the ambient temperature to reduce the ozone concentration, on the one hand, increases the power consumption, and on the other hand, due to the slow decomposition of the ozone, the cycle is prolonged and the work efficiency is reduced.

At the same time, it is not suitable for household appliances that work at low or normal temperatures such as refrigerators and washing machines.

[0007] The method of adding catalysts to promote ozone decomposition has problems such as low efficiency and easy deactivation of catalysts, resulting in unstable ozone concentration and easily exceeding the standard.

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