1. Working principle of ultraviolet germicidal lamp
Ultraviolet germicidal lamp is a kind of equipment that uses ultraviolet short-wave radiation to kill bacteria, viruses and fungi in the air. Among them, UV-C light with wavelength of 254 nm has a strong bactericidal effect, which can kill more than 95% of bacteria and viruses.
Mercury atoms in the lamp tube are excited to produce characteristic spectral lines of mercury. Low pressure mercury vapor mainly produces ultraviolet rays of 254nm and 185nm. It uses ultraviolet rays to kill bacterial propagules, spores, mycobacteria, coronavirus, fungi, rickettsia and chlamydia. All surfaces, water and air contaminated by the above viruses can be disinfected by ultraviolet rays.
Ultraviolet disinfection lamps are mainly divided into: high voltage, medium voltage and low voltage. Disinfection application is mainly low pressure. According to national standards, the average life expectancy is 8000 hours. Some excellent products have reached the life of 13000 hours.
2. Scope of application
Ultraviolet germicidal lamp is suitable for disinfection of indoor space, including rooms, offices, hospitals and laboratories. Unlike chemical disinfectants, ultraviolet germicidal lamps will not produce harmful substances, nor will they pollute the air and the surface of articles. It is a relatively safe and environmentally friendly disinfection method.
Ultraviolet rays can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsia and mycoplasma. All surfaces, water and air polluted by the above microorganisms can be disinfected by ultraviolet rays.
3. Preventive measures
Some points for attention when using ultraviolet germicidal lamp. First of all, the types and quantities of bacteria and viruses should be confirmed before use, so as to determine the use time and distance of the ultraviolet germicidal lamp. Secondly, make sure that no one is present when using it, because long-term exposure to ultraviolet rays may cause harm to eyes and skin. In addition, the ultraviolet lamp tube needs to be replaced regularly to ensure the sterilization effect.
summary
Ultraviolet germicidal lamp is an effective indoor air disinfection equipment, and its advantages include environmental protection and safety. Some matters need to be paid attention to when using, in order to give full play to its bactericidal effect.