CN113599561A - Method for killing microorganisms in air by using laser light path system - Google Patents
Method for killing microorganisms in air by using laser light path system Download PDFInfo
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- CN113599561A CN113599561A CN202110884114.7A CN202110884114A CN113599561A CN 113599561 A CN113599561 A CN 113599561A CN 202110884114 A CN202110884114 A CN 202110884114A CN 113599561 A CN113599561 A CN 113599561A
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- laser
- pipeline
- mirror surface
- air
- reflecting mirror
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 244000005700 microbiome Species 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 230000004888 barrier function Effects 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- 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
- A61L9/18—Radiation
Abstract
The invention relates to a method for killing microorganisms in air by using a laser optical path system. By using the laser optical path system, the method comprises the following steps: starting a laser generator, emitting laser to a reflecting mirror surface on the inner wall of the pipeline, turning back the laser on the reflecting mirror surface, forming a laser barrier inside the pipeline, and controlling air to enter from one end of the pipeline and be discharged from the other end of the pipeline; the laser light path system comprises a pipeline and a laser generator, wherein a layer of reflecting mirror surface is arranged on the inner wall of the pipeline, and the laser generator is used for emitting laser to the reflecting mirror surface. According to the invention, the characteristic that the reflecting mirror surface on the inner wall of the pipeline has a closed curve is utilized to continuously reflect the incident laser to construct a large-volume high-density laser field, so that microorganisms in the air flowing through the laser field can be inactivated. The laser optical path system has the characteristics of high efficiency, low cost, stable performance, simple production and debugging and long maintenance period.
Description
Technical Field
The invention belongs to the technical field of air sterilization, and particularly relates to a method for efficiently inactivating microorganisms in air by using laser.
Background
Microorganisms in the air have important influence on places such as hospitals, schools, food processing, semiconductor production and the like, and are an important influence aspect of daily production and life. The traditional method for removing microorganisms in air mainly utilizes a high-efficiency air filter and adopts a method of ultraviolet irradiation. The air filter method has large air resistance and high energy consumption of equipment, and is not suitable for large buildings. In addition, active microorganisms remain on the filter, making disposal of the waste filter cumbersome. The ultraviolet irradiation method cannot be directly applied to places where people are exposed, and in addition, the primary sterilization efficiency of the ultraviolet sterilizer is low, and circulating wind can aggravate the diffusion of pathogenic microorganisms.
In some relatively closed public places, air is mostly supplied through an air supply system, the existing air supply system mostly has a filtering function, and the sterilization function is relatively poor, so that air with microorganisms enters the public places and is harmful to the environment, and therefore if the sterilization function can be added in the air supply system, the air purification is facilitated, and great benefits are brought to the health of people.
Disclosure of Invention
The invention aims to provide a method for killing microorganisms in air by using a laser optical path system.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for killing microorganisms in air by using a laser optical path system comprises the following steps: starting a laser generator, emitting laser to a reflecting mirror surface on the inner wall of the pipeline, turning back the laser on the reflecting mirror surface, forming a laser barrier inside the pipeline, and controlling air to enter from one end of the pipeline and be discharged from the other end of the pipeline; the laser light path system comprises a pipeline and a laser generator, wherein a layer of reflecting mirror surface is arranged on the inner wall of the pipeline, and the laser generator is used for emitting laser to the reflecting mirror surface.
Further, in the above method, the radial section of the pipeline is polygonal, circular or elliptical.
Furthermore, in the method, a window is arranged on the pipeline, and the laser generator emits laser to the reflecting mirror surface through the window.
Further, the flow rate of the air is controlled to be 4-5 m/s by the method.
The invention has the beneficial effects that:
1. according to the invention, the characteristic that the reflecting mirror surface on the inner wall of the pipeline has a closed curve is utilized to continuously reflect the incident laser to construct a large-volume high-density laser field, so that microorganisms in the air flowing through the laser field can be inactivated.
2. According to the invention, the closed reflector surface can well restrict laser in a closed space, so that the production, debugging and use are convenient, and the stability of the system in the using process is enhanced.
3. According to the invention, the radial section of the pipeline is of a polygonal, circular or elliptical structure, the laser beam can be constrained in a certain range of systems through the laser reflecting surface with the periphery closed, and the laser beam can be efficiently filled in the pipeline through setting a reasonable incident angle, so that a large-range laser field with high filling rate is constructed.
4. The laser optical path system has the characteristics of high efficiency, low cost, stable performance, simple production and debugging and long maintenance period.
Drawings
Fig. 1 is a laser optical path system in which a radial cross section of a pipe is a quadrangle.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a schematic diagram of laser field formation of the laser within the pipeline.
Fig. 4 is a laser optical path system in which the radial section of the pipe is circular.
Fig. 5 is a sectional view B-B of fig. 4.
Fig. 6 is a schematic diagram of laser field formation of the laser within the pipeline.
FIG. 7 is a graph comparing the effect of laser inactivation of microorganisms in air.
Detailed Description
EXAMPLE 1 laser light path System
As shown in fig. 1 to 6, a laser optical path system includes a pipe 1 and a laser generator 2.
The line 1 serves as a path through which the air to be purified circulates. The inner wall of the pipeline 1 is provided with a layer of reflecting mirror surface 3, and the pipeline 1 is provided with a window 4. The laser generator 2 emits laser light to the reflecting mirror 3 through the window 4.
In one embodiment, as shown in fig. 1-3, the radial cross-section of the pipeline 1 is quadrilateral. Laser generator 2 is from window 4 to the reflection of light mirror surface 3 transmission laser of one side, and laser reflects between each reflection of light mirror surface 3, through the adjustment of incident beam angle, can make the laser beam radially fill in pipeline 1, and laser refracts many times between reflection of light mirror surface 3 to construct the laser field that has certain intensity and filling rate on the air flow channel in pipeline 1. The air flow direction is perpendicular to the radial interface of the tube.
In one embodiment, as shown in fig. 4-6, the radial cross-section of the tube 1 is circular, and the reflector surface 3 on the inner wall of the tube is curved. Laser generator 2 is from window 4 to reflection of light mirror surface 3 transmission laser, and laser refracts many times between each reflection point in the curved surface, because reflection of light mirror surface 3 is the curved surface, the reflection point of laser is with helical line structure refraction inside the pipeline, through the adjustment of incident beam angle, can make the laser beam carry out axial and radial packing in the pipeline to construct the laser field that has certain intensity and filling rate. The air flow direction is perpendicular to the radial interface of the tube.
Embodiment 2 a method for killing microorganisms in air by using a laser optical path system
With the laser optical path system of embodiment 1, the method is as follows:
starting the laser generator 2, emitting laser to the reflecting mirror surface 3 of the inner wall of the pipeline through the window 4 on the pipeline 1, turning back the laser on the reflecting mirror surface 3, forming a laser barrier inside the pipeline 1, and controlling air to enter from one end of the pipeline 1 and be discharged from the other end. The flow rate of the air was controlled to be about 4.8 m/s.
At the outlet end of the tubing, a petri dish is used to receive the active microorganisms present in the air. Under the same conditions, the laser was turned on and off, and the petri dishes were used twice to receive the microorganisms in the air, each time for 20 seconds. The two dishes thus obtained were simultaneously placed in an incubator at 35 ℃ for 48 hours, and the results are shown in FIG. 7. As can be seen from FIG. 7, the air irradiated without the laser field showed about 20 colonies (b in FIG. 7) in the culture dish, while the air irradiated with the laser field showed no colonies (a in FIG. 7) in the culture dish, indicating that the laser field inactivated the microorganisms in the air.
Claims (4)
1. A method for killing microorganisms in air by using a laser optical path system is characterized in that the method comprises the following steps: starting a laser generator (2), emitting laser to a reflecting mirror surface (3) on the inner wall of the pipeline (1), turning back the laser on the reflecting mirror surface (3), forming a laser barrier inside the pipeline (1), and controlling air to enter from one end of the pipeline (1) and to be discharged from the other end; the laser light path system comprises a pipeline (1) and a laser generator (2), wherein the inner wall of the pipeline (1) is provided with a layer of reflecting mirror surface (3), and the laser generator (2) is used for emitting laser to the reflecting mirror surface (3).
2. Method according to claim 1, characterized in that the radial cross section of the pipeline (1) is polygonal, circular or elliptical.
3. The method according to claim 1, characterized in that the pipe (1) is provided with a window (4), and the laser generator (2) emits laser light through the window (4) towards the mirror surface (3).
4. The method of claim 1, wherein the air flow rate is controlled to be 4-5 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884114.7A CN113599561A (en) | 2021-08-03 | 2021-08-03 | Method for killing microorganisms in air by using laser light path system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884114.7A CN113599561A (en) | 2021-08-03 | 2021-08-03 | Method for killing microorganisms in air by using laser light path system |
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| Publication Number | Publication Date |
|---|---|
| CN113599561A true CN113599561A (en) | 2021-11-05 |
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|---|---|---|---|
| CN202110884114.7A Pending CN113599561A (en) | 2021-08-03 | 2021-08-03 | Method for killing microorganisms in air by using laser light path system |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203087352U (en) * | 2013-01-17 | 2013-07-31 | 何颖霖 | Laser sterilization deinsectization device |
| US20130248734A1 (en) * | 2012-03-21 | 2013-09-26 | John Robert Berry | Air purification system |
| CN111603599A (en) * | 2020-05-09 | 2020-09-01 | 福建新位激光科技有限公司 | Air curtain type laser aerosol disinfection device and use method |
| 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 |
| CN113117127A (en) * | 2021-05-14 | 2021-07-16 | 嵊州陌桑高科股份有限公司 | Air sterilization equipment and sterilization method thereof |
-
2021
- 2021-08-03 CN CN202110884114.7A patent/CN113599561A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150144803A1 (en) * | 2003-06-12 | 2015-05-28 | John Robert Berry | Air purification system |
| US20130248734A1 (en) * | 2012-03-21 | 2013-09-26 | John Robert Berry | Air purification system |
| CN203087352U (en) * | 2013-01-17 | 2013-07-31 | 何颖霖 | Laser sterilization deinsectization device |
| CN111603599A (en) * | 2020-05-09 | 2020-09-01 | 福建新位激光科技有限公司 | Air curtain type laser aerosol disinfection device and use method |
| 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 |
| CN113117127A (en) * | 2021-05-14 | 2021-07-16 | 嵊州陌桑高科股份有限公司 | Air sterilization equipment and sterilization method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211105 |
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| RJ01 | Rejection of invention patent application after publication |