Product Description:The current novel pneumonia epidemic has brought great challenges to the domestic economy and the lives of the people. Controlling its spread has become a top priority. The Shanghai Institute of Optics and Mechanics, Chinese Academy of Sciences, responded to the call of the state and carried out emergency research. Developed the "pulse strong light sterilization instrument", which can effectively kill harmful bacteria and viruses and other microorganisms, and build a safe and healthy working and living environment. Compared with the commonly used high temperature, chemical reagents, radiation sterilization and other sterilization methods, pulse Glow sterilization technology is more efficient and safer.
Principle of disinfection and sterilization:
The generation mechanism of pulsed strong light is to release the electric energy accumulated in a relatively long time (tens to hundreds of milliseconds) in the form of white light through ionization of inert gas and avalanche discharge in an extremely short time (tens to hundreds of microseconds) through pulse discharge engineering technology. The spectral range (200nm-1100nm) is close to the sunlight, but the instantaneous power can reach ten million times of the sunlight power, which can quickly kill infectious bacteria.
The sterilization mechanism of pulsed strong light can be simply understood as: high energy density, light synergy of different wave bands On the surface of microorganisms, instantly destroy the cell wall and nucleic acid structure of microorganisms, thus killing microorganisms.
The bactericidal mechanism of is mainly summarized as follows:
1) Photochemistry:
Photochemistry refers to the chemical reaction that occurs when substances absorb light energy under the irradiation of visible light or ultraviolet light. The genetic materials in the cells of microorganisms change and become inactive after being irradiated by intense light. Photochemical sterilization refers to that the short wave ultraviolet ray can penetrate the cell wall of the microorganism and act on the internal genetic material of the microorganism, causing the heterotopia or breakage of the double helix structure to achieve the killing effect. The traditional DC ultraviolet lamp sterilization is realized by the photodimerization of microbial cells under 254nm ultraviolet irradiation. The results show that different ultraviolet spectra can induce other different forms of photochemical reactions, such as photo hydration, photo decomposition, photo crosslinking, etc.
Because the light emitted by the pulsed strong light is full spectrum and contains 200-400nm ultraviolet wave band, it has a stronger sterilization effect under the above combined action mechanism, and can also kill more kinds of bacteria, viruses and other microorganisms, expanding the sterilization range.
2) Photothermal effect:
Photothermal effect refers to the temperature rise after the light energy is absorbed by the material. Photothermal sterilization is unique to pulsed strong light technology. Its mechanism is that the high peak power strong light directly irradiates the microbial surface, the microbial surface temperature rises sharply, and the cell wall structure will be completely destroyed and die. This mechanism makes pulsed strong light very effective in killing all microorganisms.
3) Secondary effect:
The short wave ultraviolet ray in the pulsed strong light can ionize the oxygen (O2) in the air to generate ozone (O3), or oxidize the water (H2O) to generate hydrogen peroxide (H2O2). Both O3 and H2O2 have bactericidal effects, which will further enhance the sterilization effect.
Equipment technical scheme:
this scheme adopts advanced drive power technology to make the pulse xenon lamp work in narrow pulse width, high potential gradient and repetition frequency mode, which can obtain high ultraviolet radiation intensity and meet the sterilization and disinfection requirements in relatively extreme environments.
The power supply is mainly composed of charging module, pulse capacitor, trigger circuit, protection unit and microcontroller. It discharges to the load of pulse xenon lamp through high-voltage cable. The adjustment of xenon lamp driving current According to the current feedback signal, the control circuit uses a certain algorithm to adjust the power semiconductor devices in high frequency to achieve a stable xenon lamp driving current.
Specification of equipment prototype
In order to increase the intensity of ultraviolet radiation, the pulse xenon lamp tube adopts a U-shaped structure, and uses the ultraviolet enhanced mirror polished aluminum plate as the reflector. After the system is started, the light source part is raised to a proper height through the lifting mechanism, and it will automatically lower and reset after the work is completed.
The overall technical parameters of the equipment prototype are equivalent to those of similar foreign equipment, and the specific technical indicators are as follows:
1) Power supply: A.C.220 (1 ± 10%) V;
2) Maximum power: 1800W;
3) Operating frequency: maximum 2Hz, adjustable;
4) Working mode: forced air cooling;
5) Xenon lamp life: more than 1 × 107 rounds;
6) Protection function: the system has protection functions such as power supply overvoltage, current overcurrent, load short circuit, equipment leakage, etc., and has flash leakage and stop flash alarm functions.
Technical effect and advantages Compared with traditional sterilization methods, pulse strong light sterilization technology has the following advantages:
1) Broad spectrum: pulsed strong light can kill all microorganisms, including MRSA, MDRSP, VRE and other "super bacteria" that are resistant to almost all antibiotics.
2) High efficiency: It can quickly and effectively kill bacteria, viruses and other microorganisms. It has a broad-spectrum killing effect on typical ultraviolet "immune" microorganisms, mold spores, Escherichia coli, Bacillus subtilis spores and other common microorganisms. The killing rate can reach 99.9999% with single pulse irradiation. Compared with traditional ultraviolet lamps, it can greatly improve the disinfection speed (disinfection time only takes a few minutes to several seconds).
3) Prevention of "light reactivation": microorganisms killed by traditional ultraviolet rays have a certain chance to repair damaged biological bonds under the irradiation of visible light, with a reactivation rate of about 5%. Due to the photothermal sterilization mechanism, pulsed strong light can completely kill microorganisms, so it can effectively inhibit the "light reactivation" phenomenon.
4) Flexible control: start and stop without hot start; The parameters of pulse flash frequency and flash intensity can be flexibly designed and adjusted according to different application requirements.
5) Environmental protection: there are no residues, three wastes, mercury and other pollutants in the production and use of the pulsed high light equipment.
Field of application:
This equipment can be used for rapid disinfection treatment in wards, classrooms, offices, workshops, hotel halls and other indoor places. Pulse light sterilization technology can be applied to medical and health care, food industry, sewage treatment and other fields at the same time.
Main Cooperation Materials Manufacturers:
CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC
Main Export Countries & Areas:
Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.
Raytekoptics Extra value added services offered:
1). Optical workcraft & process solution design;
2). Rough processing raw materials;
3). Semi finishing raw materials;
4). Fabricate custom sizes and shapes;
5). Design and supply custom coatings;
6). Modify and resurface customer supplied materials;
7). Drill holes, notch glass and provide beveled substrates;
8). Precision polish optics with non-standard aspect ratios;
Payment Method: by T/T or Western Union.
Delivery time: 7-10 days.
Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offers quality warranty for our optics products with "3R" policy. For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.
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Principle of disinfection and sterilization:
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