Multifunctional LED (light emitting diode) ultraviolet air sterilization method and device

Abstract

The invention provides a multifunctional LED (light emitting diode) ultraviolet air sterilization method and device. In the method, an integrated high-power density ultraviolet LED light band is adopted, the spatial ultraviolet irradiance is increased to 5-60mW / cm<2>, the LED light band is placed in an air sterilization pipeline, and the air ultraviolet radiation time is increased to 0.2-2 seconds, so that the amount of air ultraviolet radiation passing through the pipeline is more than 6mJ / cm<2> (mW.s / cm<2>), bacteria and viruses are killed at one step, and foreign smell is removed. The method is a multifunctional air sterilization mode with high efficiency, quickness and small volume, can be used for simultaneously realizing low-temperature start and automatic power regulation and control, is suitable for places with low temperature or large environmental temperature changes, and is safer and more reliable.

Description

technical field [0001] The invention relates to the technical field of ultraviolet disinfection, in particular to a multifunctional LED ultraviolet air disinfection method and a device thereof. Background technique [0002] The traditional low-pressure mercury discharge ultraviolet lamp (hereinafter referred to as the traditional ultraviolet lamp) is more and more widely used in the field of sterilization and disinfection. Its principle is to use the stimulated radiation of mercury atoms to generate 253.7nm ultraviolet light, and the ultraviolet light will penetrate the cell membrane and nucleus of microorganisms. , Destroying the molecular bonds of nucleic acid (DNA or RNA), making it incapable of replicating or inactive, cells cannot replicate, and microorganisms will soon die. The mercury atomic concentration or mercury vapor pressure in the traditional ultraviolet lamp directly affects the ultraviolet radiation efficiency, and keeping the mercury vapor pressure in the la...

AI Technical Summary

Problems solved by technology

At present, the air disinfection products on the market often use flowing air to quickly flow through the ultraviolet lamp. The radiation time is too short, the radiation intensity is insufficient, and the ultraviolet radiation dose is far from meeting the requirements of disinfection and sterilization.

In order to ensure the dose of ultraviolet radiation, it is sometimes necessary to extend the disinfection channel. The curved and folded pipeline is beneficial to reduce the volume of the disinfection device. For example, when sterilizing air with a large flow rate and a fast flow rate, the pipeline must be long enough. The traditional ultraviolet lamp is made of glass. Inconvenient to use, multiple rectifiers are required when using multiple branches in series, and the connection is also limited

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