According to statistics, the flu and other infectious diseases are overtaken every year by more than 7 million people. This is despite the fact that most of them are ill not in a hospital, or even at home, preferring to endure the disease without going to doctors and passing on infections to others.
The main reason for all this is the constant mutation of influenza viruses and other diseases transmitted by airborne droplets under the influence of drugs. An epidemiological danger arises even if the entire population is vaccinated, since vaccination can be powerless against new strains of viruses.
Everyone knows that it is easier to prevent the disease, doing prevention, than to treat it with subsequent complications. One of these methods that prevent the spread of infections and viruses is the disinfection of air that daily surrounds people in various public places. The recirculator, the bactericidal effect of which is provided by the detrimental effect of UV rays on microorganisms, is a device to guard the health of the population. Let us consider in more detail the effect of ultraviolet radiation.
Discovery of ultraviolet rays
In the 80s of the 19th century, English scientists Blant and Down found that when exposed to direct sunlight, the reproduction of microbes stops. Later studies proved that bacteria die precisely because of that part of the solar spectrum, the wavelength of which lies in the range from 100 to 280 nm. This range is invisible to the human eye and is known as ultraviolet. The maximum radiation efficiency falls on a wavelength from 250 to 270 nm.
The bactericidal effect of ultraviolet radiation
The detrimental effect of UV rays on bacteria is caused by the photochemical reaction that occurs in microorganisms under the influence of UV quanta. The reaction ends with irreversible damage to the genetic chain of the body's molecules. This prevents the further reproduction of viruses, bacteria and other pathogenic microbes, and also contributes to their destruction.
As a result of ultraviolet radiation, pathogens of infectious diseases without the use of harmful chemicals are affected, which is really more preferable for the environment. The bactericidal recirculator is the very high-precision weapon in the fight against pathogenic microorganisms.
UV disinfection
Every day, people are forced to encounter pathogenic bacteria in various public places. To prevent the spread of diseases, bactericidal irradiators and recirculators are installed in places of mass stay of people. They can be seen in:
- hospitals, clinics;
- medical sanatoriums and recreation centers;
- kindergartens, schools;
- beauty salons, baths, etc.
The recirculator ultraviolet bactericidal disinfects indoor air by repeatedly passing it through its housing. The device is installed so that the intake and exhaust of the air flow is carried out without obstacles. The bactericidal recirculator for the house is located above the window or doorways, if the wall version is used. The height of the suspension should be one and a half meters from the floor to the device itself.
About Dezar Recirculators
Dezar bactericidal recirculators are effective medical devices for the safe purification of bacteria from air in rooms where people are present. Their design features make it possible to exclude the exit of ultraviolet radiation outside the enclosure, and special lamps do not produce ozone, which is harmful to humans. All this makes the bactericidal Dezar recirculator safe and effective in use.
During the operation of the device, flow disinfection is carried out using ultraviolet radiation in the C-band, the wavelength of which is 250 nm. The radiation of this spectrum has a high bactericidal activity against pathogenic bacteria, viruses, fungi, spores and protozoa.
Dezar series instruments are manufactured at the KRONT enterprise, which includes a recirculator. The bactericidal lamp is installed in an irradiator of imported production and has a record life of up to 8 thousand hours of continuous radiation. Cases of recirculators are made of shockproof and chemically resistant materials, which allows the device to be disinfected with any disinfectant.
The device of recirculators "Dezar"
Open-type ultraviolet irradiators have been used in medical facilities for a long time, but in order to use them, it was necessary to have no people during lamp operation.
Bactericidal UV recirculator Dezar - a new generation of devices using ultraviolet radiation in rooms where people are directly located. Silent fans take air, passing it through the block with UV lamps.
A high level of air disinfection (up to 99.9%) can be achieved by using the optimal ratio of the radiation power of the lamps to the air velocity. Additionally, a special internal spraying on the walls of the device increases the effectiveness of the bactericidal action. It has a high reflection coefficient, due to which the radiated energy is not scattered or absorbed, but multiplied. The disinfection chamber is designed so that harmful UV rays do not extend outside the device.
Benefits of Recirculators
Thanks to new ultraviolet lamps without producing ozone, the production of Dezar series devices became possible. The Phillips company makes lamps with a special coating that inhibits UV radiation with a wavelength of less than 200 nm. This prevents the occurrence of ozone in the air and prolongs the work without replacement.
The bactericidal recirculator has a disinfecting effect, sufficient to destroy all pathogens that are present in the air.
There are special standards for bactericidal safety, and for each category of premises an efficiency threshold is set, which can be from 95 to 99.9%. Depending on this, several standards-compliant recirculator models have been created.
Bactericidal safety categories
There are various types of rooms to be equipped with bactericidal plants for air disinfection and the level of effectiveness is:
- 90.0% for children's playrooms, school classes, domestic premises of industrial and public buildings with a massive and prolonged stay of people;
- 95.0% for wards, rooms, and other treatment and prevention facilities not included in category 2;
- 99.0% for dressing rooms, rooms for sterilization and pasteurization of milk, rooms with immunocompromised patients, intensive care units, rooms of central sterilization departments, bacteriological and virological laboratories, blood transfusion stations, pharmaceutical workshops for the manufacture of sterile drugs;
- 99.9% for operating rooms, preoperative, maternity, sterile areas, children's rooms, and wards for premature babies.
The bactericidal air recirculator allows you to obtain the necessary sterility parameters of the rooms in which it is installed.
Instrument Specifications
Consider the following recirculator models:
- "Desar 2" - two powerful lamps of 15 W each, 95.0% efficiency, 3-4 category of rooms, productivity - 70 m 3 / h;
- "Desar 3.4" - have two lamps with a power of 15 W, 99.0% bactericidal effect, belong to the 2-3 category, productivity - 100 m 3 / h;
- "Desar 5.7" - the first category of premises, 99.9% efficiency, equipped with two lamps with a power of 30 W, productivity - 100 m 3 / h.
These models from the Desar illuminator range are available in two colors - white and blue. If you need to move the device from one room to another, the Dezar recirculators (4 and 7) have mobile supports. In the case of a permanent stay in one place, the wall-mounted bactericidal Dezar recirculator is suitable (2, 4 or 5).
Scope of recirculators
Depending on the area of the room, the required number of devices is calculated that will ensure effective disinfection. So, for example, with a room volume of 45 m 3 to ensure 95.0% bactericidal effectiveness, you can install 1 bactericidal air recirculator "Desar 2". For a room of 100 m 3 you need to use two Dezar devices (3 or 4).
The use of recirculators is justified in rooms of various types and purposes. In addition to hospitals and clinics, they are installed in homes and offices, child care facilities, industrial and domestic buildings.
Recirculators in the home and office
Small-sized recirculators that meet all the requirements are ideally suited for use in a residential or office environment. They provide a reliable level of safety against various infections and pathogens, while not posing any danger to adults and children. Small size and original design allow you to install a bactericidal recirculator for the home in any apartment.
Service Recirculators
UV air disinfection devices are recommended for use in household institutions and service organizations:
- hairdressing salons;
- Laundries
- cosmetic and massage parlors.
Child care facilities, such as nurseries, kindergartens and schools, must also have a bactericidal recirculator. Reviews on disinfection devices, especially during an exacerbation of mass diseases, are the most positive. Recirculators reduce the risk of transmission, thereby preventing epidemics of influenza and other colds.
In March 2003, a decree was issued by the chief medical doctor of Russia that hairdressing salons, cosmetic, manicure and pedicure rooms are required to install closed UV bactericidal irradiators for air disinfection in the presence of people.
Recyclers in medical facilities
Studies have shown that a bactericidal recirculator is capable of providing a high degree of disinfection of up to 99, 9% and meets the maximum requirements that are imposed on premises of the first category, where there must be absolute sterility.
More and more medical institutions, such as hospitals and clinics, install closed irradiators - recirculators in their buildings to ensure bactericidal safety at all times.