UV disinfection cabinet?
Many people have bought a disinfection cabinet at home. After knowing the principle, they began to wonder: What is the UV disinfection cabinet ? How about the disinfection effect? ​​On this issue, we have made a brief introduction to everyone. Let's take a good look at it.
To understand the working principle of the UV disinfection cabinet, we first need to understand the working principle of the general disinfection cabinet. For the user, there are two methods of disinfection: one is to disinfect by high temperature, and the other is to disinfect by ultraviolet light.
UV disinfection cabinet is good - the principle of UV disinfection cabinet
The sterilization principle of the ultraviolet disinfection cabinet is to irradiate microorganisms such as bacteria and viruses through ultraviolet rays to damage the structure of DNA in the body, kill bacteria or lose reproductive ability. DNA absorbs most ultraviolet light at a wavelength of 253.7 nm. The sterilization effect of ultraviolet light is related to its irradiation intensity and total irradiation amount, and generally can reach a killing rate of ≥ 99%.
When the dose of irradiation (the product of the intensity of illumination and the moment of illumination) increases, the number of bacteria killed increases, but the percentage of bacteria killed does not increase as the proportion of the dose increases. A small dose can also kill a small amount of bacteria; if there is a large amount of bacteria, some bacteria will not be killed even with a large dose.
UV disinfection cabinet is good - the shortcomings of UV disinfection cabinet
Ultraviolet light can only travel in a straight line, with low radiant energy and weak penetrating power. It can only kill microorganisms that are directly irradiated. Therefore, the disinfection site should be exposed to ultraviolet light as much as possible during disinfection. Because of the layout of the disinfection cabinet and the dense placement of the dishes, the ultraviolet radiation is blocked by the dishes themselves. Many parts of the dishes cannot be irradiated by ultraviolet light. The bacteria and viruses in these parts will not be killed by ultraviolet rays. Therefore, according to the national standard rules, the utensil disinfection cabinet can not only use ultraviolet light as a single disinfection method. Generally, direct touch of ultraviolet light is harmful to everyone. However, the ultraviolet transmittance of general glass and tempered glass is only 0.01 to 0.1%. Therefore, the use is very safe. Because ultraviolet radiation is harmful to the human body, ultraviolet disinfection cabinets are not allowed to leak. If ultraviolet light can be directly seen from any opaque part of the machine, it should be stopped and repaired.
After reading so many about the principle of UV disinfection cabinet, I believe that everyone has a clear understanding of the UV disinfection cabinet, in fact, the UV disinfection cabinet is still pretty good, like the pro can start. Today's introduction is here, more relevant information, so stay tuned for the tracking report of Xiaojiaju.com.
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