Traditional Culture Encyclopedia - Traditional festivals - What is the role of ultraviolet lamps
What is the role of ultraviolet lamps
Disinfection and sterilization, in addition to odor
Ultraviolet lamp role
Disinfection and sterilization
Ultraviolet lamps can play the role of sterilization and disinfection. Ultraviolet lamps can emit ultraviolet light, ultraviolet light can destroy the structure of bacteria, spores, etc., the bacterial protein decomposition, etc., so as to play a good role in sterilization and antibacterial. UV lamps are widely used in the field of medical, sanitary and epidemic prevention, food and other areas of disinfection and sterilization. We can also use UV lamps for indoor sterilization.
Deodorization
Ultraviolet lamps can also deodorize, because ultraviolet light will react with oxygen to produce ozone. Ozone is a lively substance, easy to react with other substances and gases, to play in addition to the effect of odor, such as ultraviolet light can break down the grease in the smoke, so as to remove the odor and so on.
Ultraviolet lamp installation requirements
1, each cubic meter of space to ensure that the power of more than 1 watt, and to be 2-2.5 meters from the ground.
2, when installing the lamp, be sure to use the reflective groove, not to install it directly in the air.
3, the installation can not use electronic ballast, you must use a transistor ballast, otherwise the lamp can not be properly disinfected.
Three common ultraviolet disinfection devices, respectively, ultraviolet lamp car, hanging ultraviolet lamps, mobile single-tube ultraviolet disinfection lamp
1, ultraviolet lamp car: with automatic timing function, generally double tube, divided into the upper tube and lower tube.
2, hanging ultraviolet lamp: the implication is that the lamp suspension installation, that is, to avoid ceiling installation. Installation requires lamp suspension height from the ground 1.8m ~ 2.2m.
3, mobile single-tube UV disinfection lamp: with a base, lightweight, easy to move.
As early as the beginning of the 19th century, through the mercury vapor is inspired by the process of discharge luminescence that is already known: the steam is closed to a glass tube. A voltage is applied to two metal electrodes at each end of the glass tube, creating an "arc of light" that causes the steam to emit light. There is no way to filter out the ultraviolet light from the light arc because it is so easily absorbed by a variety of media.
Niels Ryberg Finsen and light therapy
The great clinician, who won the Nobel Prize in Physiology and Medicine in 1903, spent his life researching light therapy, which gave hope to countless smallpox and lupus patients.
Fenson first discovered and skillfully utilized infrared "red light" to help smallpox patients recover faster and without scarring. But when he applied it to lupus patients, it didn't work. After some exploratory treatments, he found that lupus patients' symptoms improved with high doses of ultraviolet light. Although the mechanism (UV sterilization) was not clear at the time, Fenson found a powerful artificial light source, a carbon arc light source, and then used a blue copper sulfate solution as a filter to obtain high doses of UV light. With the help of Finsen's targeted light therapy, more than half of the lupus patients in Copenhagen were cured and regained their appearance. It was also the first time humans had access to UV arcs by artificial means.
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