Ultraviolet laser focusing ionization fluid disinfection system and disinfection machine

Abstract

The invention relates to an ultraviolet laser focusing ionization fluid disinfection system and a disinfection machine, and the system comprises a fluid channel which is provided with a fluid inlet, a fluid outlet and a disinfection cavity, the disinfection cavity is internally provided with at least one group of optical fiber arrays, and the light emitting end of each optical fiber array is full of a cross section for fluid circulation; the output end of the ultraviolet laser emitter is connected to the input end of the optical fiber array, a focusing element is arranged at the light emitting end of each optical fiber, and ultraviolet laser is output by the optical fiber array and forms an ionization area in the disinfection cavity after passing through the focusing elements. An ultraviolet laser focusing ionization technology is adopted, an ionization focus with high energy density is formed, the ionization focus not only directly acts on fluid molecules at the focus, but also excites fluid in a peripheral area through the ionization effect, a wide ionization area is formed, harmful substances in the fluid are decomposed into harmless low-molecular compounds, and therefore the fluid concentration is improved. The efficient and thorough disinfection on the fluid is realized.

Description

Technical Field

[0001] The invention relates to the technical field of laser fluid disinfection devices, and in particular to an ultraviolet laser focused ionization fluid disinfection system and a disinfection machine. Background Art

[0002] In addition to oxygen, carbon dioxide, nitrogen and other gases, the air often contains some harmful substances, such as bacteria and viruses. Especially in office buildings, hospitals, government halls, stations, airports and other places with dense traffic, the presence of harmful substances in the air causes considerable harm to people. In recent years, different types of air disinfectors have emerged to improve the quality of indoor air, such as ozone air disinfectors, plasma air disinfectors, photocatalyst air disinfectors, etc. However, according to the usage, these air disinfectors still have the following challenges: First, the problem of virus escape. Although these air disinfectors can effectively kill viruses within a certain range, virus particles may escape through the gaps in the equipment, loopholes in the ventilation system or other areas that are not completely covered, resulting in poor disinfection effect; second, the disinfection energy is insufficient. The disinfection energy (such as ultraviolet intensity, ozone concentration, plasma density, etc.) generated is not enough to completely kill all viruses. Even if the virus particles pass through the disinfection area, if the disinfection energy is insufficient, the virus may still survive and continue to spread.

[0003] Based on this, there is an urgent need in the art to propose a system for disinfecting fluids such as air with higher disinfection energy and better disinfection effect. Summary of the invention

[0004] Based on this, in order to solve the above problems, the present invention provides an ultraviolet laser focused ionization fluid disinfection system and a disinfection machine, which form an ionization focus with high energy density and can efficiently remove pollutants in the fluid.

[0005] To achieve the above object, the present invention provides an ultraviolet laser focused ionization fluid disinfection system, comprising: A fluid channel is provided with a fluid inlet, a fluid outlet and a disinfection chamber, wherein at least one set of optical fiber arrays is provided in the disinfection chamber, and the light-emitting ends of the optical fiber arrays are covered with a cross section for fluid circulation; The output end of the ultraviolet laser transmitter is connected to the input end of the optical fiber array. A focusing element is arranged at the light output end of each optical fiber. The optical fiber array outputs ultraviolet laser and forms an ionization zone in the disinfection chamber after passing through the focusing element.

[0006] In one embodiment, the arrangement of the optical fiber array includes at least one of the following: Method 1: linear arrangement along the first direction and stepped arrangement along the second direction; Method 2: linear arrangement along the first direction and wave arrangement along the second direction; Method 3: spiral cone arrangement, the lowest point and the highest point of the spiral cone are full of the disinfection cavity; Method 4: spiral ring arrangement, the spiral ring optical fiber array is perpendicular to the direction of fluid flow; Method 5: Grid arrangement, the grid-shaped optical fiber array is perpendicular to the direction of fluid flow.

[0007] In one embodiment, the optical fiber array is composed of single optical fiber bundles arranged in a preset arrangement, each optical fiber bundle contains one or more optical fibers, and the spacing between each optical fiber bundle is 0.5-100 mm.

[0008] In one embodiment, the inner wall of the disinfection chamber is provided with a high reflectivity material layer.

[0009] In one embodiment, the fluid inlet and the fluid outlet are provided with speed regulating devices for adjusting the speed of fluid circulation.

[0010] In one of the embodiments, a HEPA high efficiency filter is also provided at the rear end of the fluid inlet.

[0011] In one embodiment, a filter screen is provided at the front end of the fluid outlet, and a titanium dioxide coating with a thickness of 0.5-0.8 mm is coated on the filter screen.

[0012] In one of the embodiments, the ultraviolet laser emitter outputs ultraviolet laser with a wavelength of 250-285nm.

[0013] In one embodiment, the ultraviolet laser emitter can be replaced by a femtosecond laser.

[0014] In one embodiment, a disinfection machine is provided, comprising an ultraviolet laser focused ionization fluid disinfection system as described in any one of the above items.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an ultraviolet laser focused ionization fluid disinfection system and a disinfection machine, which adopt ultraviolet laser focused ionization technology. The ultraviolet laser transmitted by the optical fiber passes through a focusing element to focus the ultraviolet laser beam on a specific point or area in the disinfection chamber to form an ionization focus with high energy density. The ionization focus not only directly acts on the fluid molecules at the focus, but also excites the fluid in the surrounding area through ionization to form a wide ionization zone. The free radicals, ions and other active particles in the ionization zone react with the formaldehyde and organic pollutant molecules in the fluid to destroy their molecular structure and decompose them into harmless low-molecular compounds. These reactions are carried out efficiently in the ionization zone, thereby achieving efficient and thorough disinfection of the fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1The present invention is a schematic structural diagram of an ultraviolet laser focused ionization fluid disinfection system.

[0017] Figure 2 FIG. 4 is a schematic cross-sectional view of an optical fiber array in one embodiment of the present invention.

[0018] Figure 3 FIG. 4 is a schematic cross-sectional view of an optical fiber array in another embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0020] like Figure 1As shown, this embodiment provides an ultraviolet laser focused ionization fluid disinfection system, including: a fluid channel 10, provided with a fluid inlet 101, a fluid outlet 103 and a disinfection chamber 102, wherein at least one group of optical fiber arrays 20 is provided in the disinfection chamber 102, and the optical fiber array 20 is composed of single optical fiber bundles arranged and combined in a preset arrangement, each optical fiber bundle contains one or more optical fibers, and the spacing between each optical fiber bundle is 0.5-100 mm. The light-emitting end of the optical fiber array 20 is covered with the cross section 104 through which the fluid flows; the ultraviolet laser emitter 30, whose output end is connected to the input end of the optical fiber array 20, outputs the ultraviolet laser from the end of the optical fiber to the preset position of the fluid channel 10; the optical fiber adopts optical fiber material with high transmittance and low loss to ensure the efficient transmission of the ultraviolet laser; the light-emitting end of each optical fiber is provided with a focusing element, and the focusing element is a focusing mirror, which is used to focus the ultraviolet laser into a fine light beam to form a high-intensity ionization zone; each optical fiber of the optical fiber array 20 outputs ultraviolet laser and forms an ionization zone in the disinfection chamber 102 after passing through the focusing element; the ultraviolet laser focusing ionization fluid disinfection system provided in this embodiment adopts ultraviolet laser focusing ionization technology; the ultraviolet laser transmitted by the optical fiber passes through the focusing element to focus the ultraviolet laser beam Focusing on a specific point or area in the disinfection chamber, a high-energy-density ionization focus is formed. The ionization focus not only directly acts on the fluid molecules at the focus, but also stimulates the fluid in the surrounding area through ionization to form a wide ionization zone. The fluid is air or water. The free radicals, ions and other active particles in the ionization zone react with the formaldehyde and organic pollutant molecules in the air, destroying their molecular structure and decomposing them into harmless low-molecular compounds. These reactions are carried out efficiently in the ionization zone, thereby achieving effective removal of pollutants in the air; the ionization zone instantly heats the ions in the water, causing them to ionize and dissociate, thereby decomposing the ions into atoms or molecules and detaching them from the water. In this process, microorganisms (such as bacteria, viruses, etc.) in the water will also be destroyed, thereby achieving the purpose of disinfection.

[0021] like Figure 1-2As shown, in one embodiment, the arrangement of the optical fiber array 20 is linearly arranged along the first direction and stepped along the second direction. For example, the first direction refers to the direction along the fluid flow (set as the X-axis direction), and the second direction refers to the direction perpendicular to the fluid flow (set as the Y-axis direction). The ends of the optical fibers arranged along the first direction are on the same plane, ensuring that the optical fibers can evenly cover the fluid flow path, so that the light can continuously and stably act on the fluid; the plane of the ends of the optical fibers arranged in the second direction is stepped, thereby increasing the coverage of the optical fiber array in the Z-axis direction. The stepped arrangement not only improves the space utilization rate, but also enables the light energy to act more deeply on the fluid, thereby enhancing the disinfection effect. Each bundle of optical fibers is spaced 5mm apart, so that the optical fibers distributed in this way are covered with the cross section 104 where the fluid flows, ensuring that the optical fibers will not interfere with each other, while ensuring the effective coverage of the light energy. The appropriate spacing helps to achieve uniform distribution of light energy and avoid waste and overlap of light energy. The formed ionization zone is a three-dimensional ionization zone, covering a distance of the fluid channel, which improves the efficiency and thoroughness of fluid disinfection.

[0022] In one of the embodiments, the optical fibers along the second direction may also be arranged in a wave-like manner, which can also achieve full coverage of the ionization zone in the Z-axis direction.

[0023] like Figure 3 As shown, in one embodiment, the arrangement of the optical fiber array 20 can be any of the following: spiral cone arrangement, the lowest point and the highest point of the spiral cone are full of disinfection cavity; spiral ring arrangement, the spiral ring optical fiber array is perpendicular to the direction of fluid flow; grid arrangement, the grid optical fiber array is perpendicular to the direction of fluid flow, and the optical fiber array arranged in any of the above ways can be full of the cross section of fluid flow, forming a plane or three-dimensional ionization zone on the cross section of fluid flow, so as to achieve disinfection of the fluid flowing through. Optionally, the interval between each bundle of optical fibers can be set to 8mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm or 90mm.

[0024] In one embodiment, the disinfection chamber 102 may be in the shape of a cylinder or a rectangular cylinder.

[0025] In one embodiment, a high reflectivity material layer is provided on the inner wall of the disinfection chamber 102. During the interaction between the laser and the harmful substance, the high reflectivity material layer can enhance the ionization effect of the laser. When the laser irradiates the high reflectivity material layer, part of the laser energy is reflected and focused to the ionization zone, making the electrons in the ionization zone more easily excited and ionized. This enhancement effect helps to increase the ion concentration and electron density in the ionization zone, thereby enhancing the ionization effect.

[0026] In one embodiment, the fluid inlet 101 and the fluid outlet 103 are provided with a speed regulating device 40 for adjusting the speed of the fluid flow.

[0027] In one embodiment, a HEPA high-efficiency filter 50 is also provided at the rear end of the fluid inlet 101 to filter tiny particles, such as PM2.5, etc.; to act as a front-end device to remove some harmful gases, such as formaldehyde, etc.; to intercept some bacteria and viruses, and to enhance the effect of fluid disinfection.

[0028] In one embodiment, a filter screen 60 is disposed at the front end of the fluid outlet 103, and a titanium dioxide coating with a thickness of 0.3-1 mm is coated on the screen, which serves as a rear-end device to further block tiny particles contained in the fluid flowing to this position, thereby enhancing the effect of fluid disinfection.

[0029] In one embodiment, the ultraviolet laser emitter 30 outputs ultraviolet laser with a wavelength of 250-285 nm.

[0030] In one embodiment, the ultraviolet laser emitter 30 can be replaced by a femtosecond laser, which is a laser pulse with a very short duration, usually measured in femtoseconds (10^-15 seconds). Its pulse width is very narrow, but the energy is very high, which enables the femtosecond laser to inject all its energy into a very small action area at a very fast speed when interacting with harmful substances, forming a high-energy ionization zone to disinfect the fluid.

[0031] In one embodiment, a disinfection machine is provided, comprising an ultraviolet laser focused ionization fluid disinfection system as described in any of the above items.

[0032] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0033] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An ultraviolet laser focused ionization fluid disinfection system, characterized in that: include: A fluid channel is provided with a fluid inlet, a fluid outlet and a disinfection chamber, wherein at least one set of optical fiber arrays is provided in the disinfection chamber, and the light-emitting ends of the optical fiber arrays are covered with a cross section for fluid circulation; The output end of the ultraviolet laser transmitter is connected to the input end of the optical fiber array. A focusing element is arranged at the light output end of each optical fiber. The optical fiber array outputs ultraviolet laser and forms an ionization zone in the disinfection chamber after passing through the focusing element.

2. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: The arrangement of the optical fiber array includes at least one of the following: Method 1: linear arrangement along the first direction and stepped arrangement along the second direction; Method 2: linear arrangement along the first direction and wave arrangement along the second direction; Method 3: spiral cone arrangement, the lowest and highest points of the spiral cone are filled with the disinfection cavity; Method 4: spiral ring arrangement, the spiral ring optical fiber array is perpendicular to the direction of fluid flow; Method 5: Grid arrangement, the grid-shaped optical fiber array is perpendicular to the direction of fluid flow.

3. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: The optical fiber array is composed of single optical fiber bundles arranged and combined in a preset arrangement, each optical fiber bundle contains one or more optical fibers, and the interval between each optical fiber bundle is 0.5-100 mm.

4. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: The inner wall of the disinfection chamber is provided with a high reflectivity material layer.

5. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: The fluid inlet and the fluid outlet are provided with speed regulating devices for adjusting the speed of fluid circulation.

6. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: A HEPA high-efficiency filter is also provided at the rear end of the fluid inlet.

7. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: A filter screen is provided at the front end of the fluid outlet, and a titanium dioxide coating with a thickness of 0.5-0.8 mm is coated on the screen.

8. The ultraviolet laser focused ionization fluid disinfection system according to claim 1, characterized in that: The ultraviolet laser emitter outputs ultraviolet laser with a wavelength of 250-285nm.

9. An ultraviolet laser focused ionization fluid disinfection system according to any one of claims 1 to 8, characterized in that: The UV laser emitter can be replaced by a femtosecond laser.

10. A disinfection machine, characterized in that: An ultraviolet laser focused ionization fluid disinfection system comprising any one of claims 1-8.

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