Ultraviolet lamps, also known as ultraviolet disinfection lamps, use the ultraviolet rays emitted by mercury lamps to achieve sterilization and disinfection functions. The scientific principle of ultraviolet disinfection: mainly acts on the DNA of microorganisms, destroys the DNA structure, and makes it lose the function of reproduction and self-replication to achieve the purpose of sterilization and disinfection. Ultraviolet sterilization has the advantages of colorless, odorless and no chemical residues.
The ultraviolet lamp used for air disinfection can be installed in a suspended or mobile type. The suspended installation height is 1.8m~2.2m from the ground, which is convenient for wiping the dust on the surface of the lamp tube. The installation spacing of the lamps is uniform, so that the radiation intensity in the space can be evenly distributed. The number of UV disinfection lamps installed is an average of ≥1.5w/m3.
When ultraviolet light is used for air disinfection, it should be indoors without anyone, and the doors and windows should be closed. The room should be kept clean and dry to reduce dust and water mist. When the indoor temperature is lower than 20°C or higher than 40°C, and the relative humidity is greater than 60%, the irradiation time should be appropriately extended.
Under normal circumstances, the environment and object surfaces will be wiped and disinfected with chemical disinfectants. For surfaces that are not resistant to moisture or corrosion, UV light is one of the disinfection methods of choice. Due to the weak penetrating power of ultraviolet rays, it can only kill the microorganisms that are directly irradiated. Therefore, when using ultraviolet rays to disinfect the surface of environmental objects, ensure that the irradiated surface is fully exposed to ultraviolet radiation. The effective distance should be within 1m, and each surface is should be irradiated. When using ultraviolet rays to sterilize rough surfaces such as paper and fabrics, spread or hang them to expand the irradiation area. The time should be appropriately extended, and both sides should be irradiated.
Due to the poor penetration of ultraviolet rays, even dust can block the penetration of ultraviolet rays and affect its sterilization effect. Therefore, the surface of the UV disinfection lamp should be kept clean during use, and the lamp tube should be wiped with alcohol once a week. The following standard considers "wipe with 70%~80% ethanol cotton ball once a week", and it is recommended to operate according to this standard). If there is dust or oil on the surface of the lamp tube, it should be wiped clean at any time.