CN111603599A - Air curtain type laser aerosol disinfection device and use method - Google Patents
Air curtain type laser aerosol disinfection device and use method Download PDFInfo
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- CN111603599A CN111603599A CN202010386309.4A CN202010386309A CN111603599A CN 111603599 A CN111603599 A CN 111603599A CN 202010386309 A CN202010386309 A CN 202010386309A CN 111603599 A CN111603599 A CN 111603599A
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
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Abstract
The invention discloses a gas curtain type laser aerosol disinfection device and a using method thereof, and the gas curtain type laser aerosol disinfection device comprises a laser generator, a light beam shaper, a polygon mirror and a focusing field lens, wherein laser emitted by the laser generator is incident to the light beam shaper, the light beam shaper adjusts the laser into light spots and then uniformly emits the light spots into the polygon mirror, the focusing field lens is arranged behind the polygon mirror, the laser sequentially passes through the polygon mirror and the focusing field lens to be adjusted and then enters a lower working area, and the laser scans aerosol in space at a high speed; the laser device also comprises an absorption area which is arranged below the working area and is used for absorbing the redundant laser energy. The laser scanning device scans the working area at a high speed through the laser beam to effectively kill aerosol in the air flowing through the working area and bacteria, viruses and the like in the aerosol, and does not cause optical scattering or diffuse reflection and harm to human bodies due to the high directivity characteristic of the laser.
Description
Technical Field
The invention belongs to the technical field of laser sterilization, and particularly relates to a gas curtain type laser aerosol disinfection device and a using method thereof.
Background
Research shows that the air pollutants are mainly divided into three categories, namely particulate matters, gaseous pollutants and organisms. The air biological pollutant as one kind is mainly transmitted in the form of biological aerosol, and the biological aerosol is a colloid system formed by microorganisms suspended in the air, contains bacteria, fungi, mold spores, pollen, dander, allergen, virus, dust mites, parasitic ova and the like, and has the particle size mainly concentrated between 0.1 and 1 mu m. The bioaerosols can be spread very rapidly with people's coughing, sneezing, etc., which is very preventive. If the disease is mild, allergy is caused, and if the disease is severe, respiratory diseases are caused, and even life is possibly threatened. The novel coronavirus, Beijing plague cases in 2019, Severe SARS (SARS) in half China and influenza abused every autumn and winter (H1N 1, H3N2, etc.) were transmitted mainly by aerosal. Therefore, the development of air purification devices capable of effectively killing bioaerosols in air is urgent.
At present, the technologies for environmental sterilization mainly include surface cleaning and spraying technologies, ozone sterilization technologies, high-voltage electric pulse sterilization technologies, ultraviolet sterilization technologies, and the like. The surface cleaning and spraying technology is a traditional and simple technology, the cleaning is only suitable for sterilizing the surfaces of table tops, floors and other objects, the spraying in a large environment is difficult to realize, and the spraying distance is too far, so that liquid drops in the air are accumulated to form rain, a large amount of spraying liquid medicine is accumulated on the ground, the harm is large, and the cleaning and spraying technology is not suitable for sterilizing the large environment. Although ozone has a strong bactericidal effect, the strong oxidizing property of ozone is harmful to human health. The high-voltage electric pulse sterilization has the advantages of short sterilization time and low energy consumption, but has potential safety hazard due to the phenomenon of high-voltage ignition. The ultraviolet sterilization technology is the most widely adopted sterilization technology at present, but theoretically, the effective distance of the ultraviolet sterilization is not more than 2m, the ultraviolet sterilization must be carried out in an unmanned environment, and excessive ultraviolet irradiation can cause damage to the skin and the cornea of a human body and even cause canceration.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an air curtain type laser aerosol disinfection device and a method for using the same, which can effectively kill the aerosol in the air flowing through the working area and the bacteria and viruses therein by high-speed scanning of the laser beam, and has the advantages of simple operation, effectively improved work efficiency and precision of disinfection, and no harm to human body.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a gas curtain type laser aerosol disinfection device comprises a laser generator, a light beam shaper, a polygon mirror and a focusing field lens, wherein laser emitted by the laser generator is incident to the light beam shaper, the light beam shaper adjusts the laser into light spots and then uniformly emits the light spots into the polygon mirror, the focusing field lens is arranged behind the polygon mirror, and the laser sequentially passes through the polygon mirror and the focusing field lens to be adjusted and then enters a lower working area to perform high-speed scanning on aerosol in a space; the laser device also comprises an absorption area which is arranged below the working area and is used for absorbing the redundant laser energy.
Wherein, the laser generator is an ultraviolet semiconductor laser.
Wherein the wavelength generated by the ultraviolet semiconductor laser is 343 nm; the output power of the ultraviolet semiconductor laser is 200W.
Wherein the polygon mirror is rotationally driven by a high-speed motor; the number of sides of the polygon mirror is greater than 3.
Wherein the beam shaper is a flat-top beam shaper.
Wherein the absorption region is a laser absorption plate; the laser absorption plate is made of graphite materials and is cooled by water cooling or air cooling.
The working area further comprises an air inlet and an air outlet, and filter screens are arranged on the air inlet and the air outlet.
A method for using a gas curtain type laser aerosol disinfection device comprises the following steps:
a1, placing the air curtain type laser aerosol disinfection device at an airflow vent, and allowing external air to flow into a working area from the air inlet through a filter screen;
a2, scanning the laser beam generated by the laser generator at a high speed in a working area to form air curtain type laser, enabling the air entering the working area to be in cross contact with the air curtain type laser, and killing the aerosol in the air flowing through the working area and the bacteria or viruses in the air under the characteristic effects of high-density energy, high directivity and high brightness of the laser;
a3, the killed air flows out from the air outlet.
The invention has the following beneficial effects:
1. the invention provides a gas curtain type laser aerosol disinfection device and a using method thereof.A laser generator converts electric energy into laser energy, emitted laser is incident to a beam shaper, the beam shaper shapes the laser into light spots and then uniformly emits the light spots into a polygon prism, the polygon prism expands and amplifies high-energy light beams generated by a laser source, and simultaneously corrects the polarization and dispersion of the high-energy light beams to obtain adjusted light beams with large enough light beam diameter and uniform light spot distribution, the laser beams are scanned at high speed in a specified range by an optical principle, and a focusing field lens is adopted to focus the laser beams, so that the capability of the light beams incident to a working area is improved, and aerosol in air flowing through the working area and viruses, bacteria and the like in the aerosol can be effectively killed under the high-speed scanning of the laser.
2. The absorption area is arranged below the working area, so that residual energy in the killing process can be blocked and absorbed, optical scattering or diffuse reflection cannot be caused due to the high directivity characteristic of laser, and people and articles can be prevented from being irradiated by the laser.
3. When the device works, the aerosol in the air flow circulating through the device and the viruses and bacteria in the aerosol can be effectively killed only by installing the device at the air flow vent and opening the equipment, the operation is simple, convenient and labor-saving, the scanning speed of the laser beam in the device is extremely high, the scanning and virus killing of the air in the whole environment space can be completed in a short time, the working efficiency and the precision of the disinfection work can be effectively improved, the size of the device can be adjusted according to the actual situation, and the application range is wide.
4. Laser is another important invention of human after nuclear energy, computers and semiconductors for 20 th century, and is known as 'fastest knife', 'most accurate ruler' and 'brightest light'. The invention utilizes the characteristic of highly consistent laser optical characteristics and utilizes the high-density energy, high directivity and high brightness of the laser to effectively kill the aerosol passing through a laser radiation area and the virus or bacteria in the aerosol. And the energy absorption area is arranged, so that the residual laser energy in the killing process can be blocked and absorbed, and optical scattering or diffuse reflection cannot be caused due to the high directivity characteristic of the laser, so that the human body cannot be injured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1. a laser generator; 2. a beam shaper; 3. a polygon mirror; 4. a focusing field lens; 5. a working area; 51. an air inlet; 52. an air outlet; 6. an absorption region.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Referring to the attached drawing 1, the gas curtain type laser aerosol disinfection device comprises a laser generator 1, a beam shaper 2, a polygon mirror 3 and a focusing field lens 4, wherein laser emitted by the laser generator 1 is incident to the beam shaper 2, the beam shaper 2 adjusts the laser into light spots and then uniformly irradiates the laser into the polygon mirror 3, the focusing field lens 4 is arranged behind the polygon mirror 3, and the laser sequentially passes through the polygon mirror 3 and the focusing field lens 4 to be adjusted and then enters a lower working area 5 to perform high-speed scanning on aerosol in space; the multi-prism 3 expands and amplifies high-energy beams generated by a laser light source, and corrects the polarization and dispersion of the high-energy beams to obtain adjusted beams with large enough beam diameter and uniform light spot distribution, the laser beams are scanned at a high speed in a specified range by an optical principle, and meanwhile, the laser beams are focused by the focusing field lens 4, so that the capability of the beams to be incident into the working area 5 is improved, and aerosol in air flowing through the working area 5 and viruses or bacteria in the aerosol can be effectively killed under the high-speed scanning of the lasers;
further, the laser generator 1 is an ultraviolet semiconductor laser, which is also called a laser diode, and is a laser using a semiconductor material as a working substance, and has a small volume and a long life, and can pump its working voltage and current by a simple current injection manner to be compatible with an integrated circuit, and thus can be monolithically integrated therewith, and can also directly perform current modulation with a frequency up to GHz to obtain a high-speed modulated laser output. The ultraviolet semiconductor laser is internally provided with a laser source with the characteristics of a semiconductor and a laser, has higher peak power and lower energy consumption, has narrower emission pulse width, does not need temperature and optical compensation per se, and has obvious advantages compared with the traditional emission light source, and the wavelength of the ultraviolet semiconductor laser is 343 nm and the output power is 200W in the embodiment.
Further, the polygon mirror 3 is driven by a high-speed motor to rotate, and the polygon mirror 3 is set as a 6-prism in the embodiment, as shown in fig. 1; compared with a galvanometer, the device adopts the polygon mirror 3 to work, the speed of the device is several orders of magnitude faster than that of the galvanometer, and the efficiency is higher.
Further, the beam shaper 2 is a flat-top beam shaper for converting the laser beam into a spot with highly uniform energy distribution and steep edge, and the spot shape may be a square, a circle or other shapes.
Further, the laser device also comprises an absorption area 6 which is arranged below the working area 5 and is used for absorbing the redundant laser energy; absorption region 6 is the laser absorption board, can block and absorb and kill remaining laser energy of in-process to because the high directive property characteristic of laser can not cause optical scattering or diffuse reflection, can prevent that personnel and article from being by laser irradiation, the laser absorption board adopts graphite material to make, and cool down through water-cooling or forced air cooling.
Further, the working area 5 further comprises an air inlet 51 and an air outlet 52, wherein filter screens are arranged on the air inlet 51 and the air outlet 52 to filter large-size organisms or other impurities in the air, and the sterilization efficiency is improved.
A method for using a gas curtain type laser aerosol disinfection device comprises the following steps:
a1, placing the air curtain type laser aerosol sterilizing device at the air flow vent, wherein the outside air flows into the working area 5 from the air inlet 51 through the filter screen;
a2, scanning the laser beam generated by the laser generator 1 at a high speed in the working area 5 to form air curtain laser, making the air entering the working area 5 cross-contact with the air curtain laser, and killing the aerosol in the air flowing through the working area 5 and the bacteria or viruses therein under the characteristic action of high-density energy, high directivity and high brightness of the laser;
a3, the killed air flows out of the air outlet 52.
During the use, only need to install this device in air current vent department, open this equipment and can carry out effectual killing with the aerosol and virus and bacterium wherein in the this device air current of circulation, easy operation, convenient laborsaving to laser beam's scanning speed is extremely fast in this device, can accomplish the scanning virus killing of whole environmental space interior air in short time, can effectively improve the work efficiency and the accuracy of disinfection work, and the device size can be adjusted according to actual conditions moreover, and application scope is wide.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A gas curtain formula laser aerosol virus killing device which characterized in that: the device comprises a laser generator (1), a light beam shaper (2), a polygon mirror (3) and a focusing field lens (4), wherein laser emitted by the laser generator (1) is incident to the light beam shaper (2), the light beam shaper (2) adjusts the laser into light spots and then uniformly irradiates into the polygon mirror (3), the focusing field lens (4) is arranged behind the polygon mirror (3), and the laser sequentially passes through the polygon mirror (3) and the focusing field lens (4) to be adjusted and then enters a lower working area (5) to scan aerosol in the space at a high speed; the laser device also comprises an absorption region (6) which is arranged below the working region (5) and is used for absorbing the redundant laser energy.
2. A gas curtain laser aerosol disinfection device as claimed in claim 1, wherein: the laser generator (1) is an ultraviolet semiconductor laser.
3. A gas curtain laser aerosol disinfection device as claimed in claim 2, wherein: the wavelength generated by the ultraviolet semiconductor laser is 343 nm; the output power of the ultraviolet semiconductor laser is 200W.
4. A gas curtain laser aerosol disinfection device as claimed in claim 1, wherein: the polygon mirror (3) is rotationally driven by a high-speed motor; the number of sides of the polygon mirror (3) is more than 3.
5. A gas curtain laser aerosol disinfection device as claimed in claim 1, wherein: the beam shaper (2) is a flat-top beam shaper.
6. A gas curtain laser aerosol disinfection device as claimed in claim 1, wherein: the absorption region (6) is a laser absorption plate; the laser absorption plate is made of graphite materials and is cooled by water cooling or air cooling.
7. A gas curtain laser aerosol disinfection device as claimed in claim 1, wherein: the working area (5) further comprises an air inlet (51) and an air outlet (52), and filter screens are arranged on the air inlet (51) and the air outlet (52).
8. The use method of the air curtain type laser aerosol disinfection device is characterized in that: the method comprises the following steps:
a1, placing an air curtain laser aerosol disinfection device as claimed in any one of claims 1 to 7 at an air flow vent, with outside air flowing from the air inlet (51) through a screen into the work area (5);
a2, scanning the laser beam generated by the laser generator (1) at a high speed in the working area (5) to kill the aerosol in the air flowing through the working area (5) and the bacteria or viruses in the aerosol;
a3, the killed air flows out from the air outlet (52).
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| CN202010386309.4A CN111603599A (en) | 2020-05-09 | 2020-05-09 | Air curtain type laser aerosol disinfection device and use method |
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| CN202010386309.4A CN111603599A (en) | 2020-05-09 | 2020-05-09 | Air curtain type laser aerosol disinfection device and use method |
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Cited By (7)
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| CN112494675A (en) * | 2020-12-22 | 2021-03-16 | 武汉菩济医疗科技有限公司 | Air disinfection system and disinfection machine based on ultrafast optical network |
| CN112675351A (en) * | 2020-12-22 | 2021-04-20 | 武汉菩济医疗科技有限公司 | Ultrafast laser light curtain and air purification system |
| CN113057278A (en) * | 2021-03-29 | 2021-07-02 | 苏州光线跃动工业智能科技有限公司 | Laser sterilization equipment |
| CN113406794A (en) * | 2021-06-23 | 2021-09-17 | 辽宁大学 | Laser optical path system with laser biological inactivation function |
| CN113599561A (en) * | 2021-08-03 | 2021-11-05 | 辽宁大学 | Method for killing microorganisms in air by using laser light path system |
| CN114619135A (en) * | 2022-03-14 | 2022-06-14 | 东莞市舟拓电路科技有限公司 | Automatic discernment pressfitting board size and equipment that cuts |
| DE102021101398A1 (en) | 2020-12-22 | 2022-06-23 | Wassilij Tscherleniak | Device and method for disinfecting an infectious aerosol, in particular for deactivating pathogens in aerosol droplets |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494675A (en) * | 2020-12-22 | 2021-03-16 | 武汉菩济医疗科技有限公司 | Air disinfection system and disinfection machine based on ultrafast optical network |
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| CN113406794A (en) * | 2021-06-23 | 2021-09-17 | 辽宁大学 | Laser optical path system with laser biological inactivation function |
| CN113599561A (en) * | 2021-08-03 | 2021-11-05 | 辽宁大学 | Method for killing microorganisms in air by using laser light path system |
| CN114619135A (en) * | 2022-03-14 | 2022-06-14 | 东莞市舟拓电路科技有限公司 | Automatic discernment pressfitting board size and equipment that cuts |
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