Ultraviolet laser-focused ionization fluid disinfection system and disinfection machine

Abstract

The present invention relates to an ultraviolet laser-focused ionization fluid disinfection system and a disinfection machine. Said disinfection system comprises: a fluid channel provided with a fluid inlet, a fluid outlet, and a disinfection cavity, wherein at least one optical fiber array is arranged in the disinfection cavity, and light-emitting ends of the optical fiber array are arranged to cover the cross section through which a fluid flows; and an ultraviolet laser emitter, an output end of the ultraviolet laser emitter being connected to an input end of the optical fiber array, wherein a light-emitting end portion of each optical fiber is provided with a focusing element, and the optical fiber array outputs ultraviolet laser and forms an ionization region in the disinfection cavity after the ultraviolet laser passes through the focusing element. An ultraviolet laser-focused ionization technology is used to form an ionization focus with a high energy density. The ionization focus not only directly acts on fluid molecules at the focus, but also excites the fluid in a peripheral region by means of ionization to form a wide ionization region, such that harmful substances in the fluid are decomposed into harmless low-molecular compounds, thereby realizing effective and thorough disinfection of the fluid.

Description

An ultraviolet laser focused ionization fluid disinfection system and disinfection machine Technical Field

[0001] This invention relates to the field of laser fluid disinfection device technology, and in particular to an ultraviolet laser focused ionization fluid disinfection system and disinfection machine. Background Technology

[0002] Besides gases like oxygen, carbon dioxide, and nitrogen, air often contains harmful substances such as bacteria and viruses. This is especially true in high-traffic areas like office buildings, hospitals, government service halls, train stations, and airports, where the presence of these harmful substances poses a significant threat to people. In recent years, various types of air purifiers have emerged to improve indoor air quality, such as ozone air purifiers, plasma air purifiers, and photocatalytic air purifiers. However, based on usage experience, these air purifiers still face the following challenges: First, the problem of virus escape. While these air purifiers can effectively kill viruses within a certain range, virus particles may escape through gaps in the equipment, leaks in the ventilation system, or other incompletely covered areas, resulting in poor disinfection effectiveness. Second, insufficient disinfection energy. The disinfection energy generated (such as ultraviolet intensity, ozone concentration, plasma density, etc.) is insufficient to completely kill all viruses. Even if virus particles pass through the disinfection area, if the disinfection energy is insufficient, the viruses may still survive and continue to spread.

[0003] Therefore, there is an urgent need in this field 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, and to address the aforementioned problems, the present invention provides an ultraviolet laser focusing ionization fluid disinfection system and disinfection machine, which forms a high-energy-density ionization focus, and can efficiently remove contaminants from the fluid.

[0005] To achieve the above objectives, the present invention provides an ultraviolet laser focused ionization fluid disinfection system, comprising:

[0006] A fluid channel is provided with a fluid inlet, a fluid outlet and a disinfection chamber. At least one set of optical fiber arrays is provided in the disinfection chamber, and the light-emitting end of the optical fiber arrays is filled with the cross section for fluid flow.

[0007] An ultraviolet laser emitter has its output end connected to the input end of an optical fiber array. Each optical fiber has a focusing element at its output end. The ultraviolet laser emitted by the optical fiber array forms an ionization region in the sterilization chamber after passing through the focusing element.

[0008] In one embodiment, the arrangement of the fiber optic array includes at least one of the following:

[0009] Method 1: Linear arrangement along the first direction, and stepped arrangement along the second direction;

[0010] Method 2: Linear arrangement along the first direction, wave-like arrangement along the second direction;

[0011] Method 3: Spiral cone arrangement, with the lowest and highest points of the spiral cone filling the disinfection chamber;

[0012] Method 4: Helical ring arrangement, with the helical ring fiber array perpendicular to the direction of fluid flow;

[0013] Method 5: Mesh arrangement, with the mesh-like fiber array perpendicular to the direction of fluid flow.

[0014] In one embodiment, the fiber array is composed of single fiber bundles arranged in a preset pattern, each fiber bundle containing one or more fibers, and the spacing between each fiber bundle is 0.5-100mm.

[0015] In one embodiment, the inner wall of the disinfection chamber is provided with a layer of highly reflective material.

[0016] In one embodiment, the fluid inlet and fluid outlet are provided with speed regulating devices to adjust the speed of fluid flow.

[0017] In one embodiment, a HEPA high-efficiency filter is also provided at the rear end of the fluid inlet.

[0018] In one embodiment, a filter screen is provided at the front end of the fluid outlet, and the screen is coated with a titanium dioxide coating with a thickness of 0.5~0.8mm.

[0019] In one embodiment, the ultraviolet laser emitter outputs ultraviolet laser with a wavelength of 250-285nm.

[0020] In one embodiment, the ultraviolet laser emitter described above can be replaced with a femtosecond laser.

[0021] In one embodiment, a sterilization machine is provided, comprising an ultraviolet laser focusing ionization fluid sterilization system as described in any of the preceding claims.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This invention provides an ultraviolet laser focusing ionization fluid disinfection system and disinfection machine. It employs ultraviolet laser focusing ionization technology, where an optical fiber-transmitted ultraviolet laser beam is focused onto a specific point or region within the disinfection chamber after passing through a focusing element, forming a high-energy-density ionization focus. This ionization focus not only directly acts on the fluid molecules at the focus point but also excites the fluid in the surrounding area through ionization, forming a broad ionization zone. Within this ionization zone, free radicals, ions, and other active particles react with formaldehyde and organic pollutant molecules in the fluid, destroying their molecular structure and decomposing them into harmless low-molecular-weight compounds. These reactions occur efficiently within the ionization zone, thereby achieving efficient and thorough disinfection of the fluid. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the structure of an ultraviolet laser focused ionization fluid disinfection system according to the present invention.

[0025] Figure 2 is a schematic diagram of the cross-section of the fiber array in one embodiment of the present invention.

[0026] Figure 3 is a schematic diagram of the cross-section of the fiber array in another embodiment of the present invention. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] As shown in Figure 1, this embodiment provides an ultraviolet laser focusing ionization fluid disinfection system, including: a fluid channel 10, which is provided with a fluid inlet 101, a fluid outlet 103 and a disinfection chamber 102. The disinfection chamber 102 is provided with at least one set of optical fiber arrays 20. The optical fiber arrays 20 are composed of single optical fibers arranged in a preset arrangement. Each optical fiber bundle contains one or more optical fibers, and the spacing between each optical fiber bundle is 0.5-100mm. The output end of the fiber array 20 is filled with a fluid flow section 104. An ultraviolet laser emitter 30, whose output end is connected to the input end of the fiber array 20, outputs ultraviolet laser light from the fiber end to a preset position in the fluid channel 10. The fiber uses high-transmittance, low-loss fiber material to ensure efficient transmission of the ultraviolet laser. Each fiber's output end is equipped with a focusing element, which is a focusing lens, used to focus the ultraviolet laser into a fine beam, forming a high-intensity ionization region. Each fiber in the fiber array 20 outputs ultraviolet laser light, which, after passing through the focusing element, forms an ionization region in the disinfection chamber 102. This embodiment provides an ultraviolet laser focusing ionization fluid disinfection system that uses ultraviolet laser focusing ionization technology. The ultraviolet laser transmitted through the fiber passes through the focusing element, focusing the ultraviolet laser beam. The system focuses on a specific point or area within the disinfection chamber, forming a high-energy-density ionization focus. This ionization focus not only directly acts on the fluid molecules at the focal point but also excites the fluid in the surrounding area through ionization, forming a broad ionization zone. The fluid is either air or water. Within the ionization zone, free radicals, ions, and other active particles react with formaldehyde and organic pollutant molecules in the air, destroying their molecular structure and decomposing them into harmless low-molecular-weight compounds. These reactions occur efficiently within the ionization zone, thereby effectively removing pollutants from the air. The ionization zone also instantaneously heats ions in the water, causing them to ionize and dissociate, thus decomposing the ions into atoms or molecules that detach from the water. During this process, microorganisms in the water (such as bacteria and viruses) are also destroyed, achieving the purpose of disinfection.

[0029] As shown in Figures 1-2, in one embodiment, the fiber optic array 20 is arranged linearly along a first direction and stepped along a second direction. Exemplarily, the first direction refers to the direction along the fluid flow (denoted as the X-axis direction), and the second direction refers to the direction perpendicular to the fluid flow (denoted as the Y-axis direction). The ends of the fibers arranged along the first direction are on the same plane, ensuring that the fibers can uniformly cover the fluid flow path, allowing the light to act on the fluid continuously and stably. The ends of the fibers arranged in the second direction are stepped, thereby increasing the coverage area of ​​the fiber optic array in the Z-axis direction. The stepped arrangement not only improves space utilization but also allows the light energy to penetrate deeper into the fluid, enhancing the disinfection effect. Each fiber bundle is spaced 5mm apart, ensuring that the fibers cover the fluid flow cross-section 104, preventing mutual interference while guaranteeing effective light coverage. Appropriate spacing helps achieve uniform light distribution, avoiding waste and overlap. The formed ionization zone is a three-dimensional ionization zone, covering a portion of the fluid channel, improving the efficiency and thoroughness of fluid disinfection.

[0030] In one embodiment, the optical fibers along the second direction can also be arranged in a wavy pattern, which can also achieve full coverage of the ionization region in the Z-axis direction.

[0031] As shown in Figure 3, in one embodiment, the fiber optic array 20 can be arranged in any of the following ways: a spiral conical arrangement, where the lowest and highest points of the spiral cone fill the disinfection chamber; a spiral annular arrangement, where the spiral annular fiber optic array is perpendicular to the direction of fluid flow; or a grid arrangement, where the grid-like fiber optic array is perpendicular to the direction of fluid flow. Any of these arrangements can fill the cross-section of the fluid flow, forming a planar or three-dimensional ionization zone on the fluid flow cross-section, thereby achieving disinfection of the flowing fluid. Optionally, the spacing between each fiber bundle can be set to 8mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, or 90mm.

[0032] In one embodiment, the disinfection chamber 102 may be cylindrical or rectangular.

[0033] In one embodiment, the inner wall of the disinfection chamber 102 is provided with a layer of highly reflective material. During the interaction between the laser and harmful substances, the highly reflective material layer can enhance the ionization effect of the laser. When the laser irradiates the highly reflective material layer, part of the laser energy is reflected and focused onto the ionization region, making it easier for electrons in the ionization region to be excited and ionized. This enhancement effect helps to increase the ion concentration and electron density in the ionization region, thereby enhancing the ionization effect.

[0034] 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 fluid flow.

[0035] In one embodiment, a HEPA high-efficiency filter 50 is also provided at the rear end of the fluid inlet 101 to filter fine particles, such as PM2.5; as a front-end device to remove some harmful gases, such as formaldehyde; and to intercept some bacteria and viruses, thereby enhancing the effect of fluid disinfection.

[0036] In one embodiment, a filter screen 60 is provided at the front end of the fluid outlet 103. The filter screen is coated with a titanium dioxide coating with a thickness of 0.3~1mm. As a back-end device, it further blocks the tiny particles contained in the fluid flowing to this position, thereby enhancing the effect of fluid disinfection.

[0037] In one embodiment, the ultraviolet laser emitter 30 outputs ultraviolet laser with a wavelength of 250-285nm.

[0038] In one embodiment, the ultraviolet laser emitter 30 can be replaced with a femtosecond laser, which is a laser pulse with an extremely short duration, typically measured in femtoseconds (10^-15 seconds). Its pulse width is very narrow, but its energy is very high, allowing the femtosecond laser to inject all its energy into a very small area of ​​interaction with harmful substances at an extremely fast speed, forming a high-energy ionization zone to disinfect the fluid.

[0039] In one embodiment, a sterilization machine is provided, including an ultraviolet laser focusing ionization fluid sterilization system as described in any of the preceding claims.

[0040] It should be noted that, for those skilled in the art, it is obvious 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 characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An ultraviolet laser focused ionization fluid disinfection system characterized by: include: A fluid channel is provided with a fluid inlet, a fluid outlet and a disinfection chamber. At least one set of optical fiber arrays is provided in the disinfection chamber, and the light-emitting end of the optical fiber arrays is filled with the cross section for fluid flow. An ultraviolet laser emitter has its output end connected to the input end of an optical fiber array. Each optical fiber has a focusing element at its output end. The ultraviolet laser emitted by the optical fiber array forms an ionization region in the sterilization chamber after passing through the focusing element.

2. The ultraviolet laser-focused ionization fluid disinfection system of claim 1, wherein: The arrangement of fiber optic arrays 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, wave-like arrangement along the second direction; Method 3: Spiral cone arrangement, with the lowest and highest points of the spiral cone filling the disinfection chamber; Method 4: Helical ring arrangement, with the helical ring fiber array perpendicular to the direction of fluid flow; Method 5: Mesh arrangement, with the mesh-like fiber array perpendicular to the direction of fluid flow.

3. The ultraviolet laser-focused ionization fluid disinfection system of claim 1, wherein: The fiber array is composed of single fiber bundles arranged in a preset pattern. Each fiber bundle contains one or more fibers, and the spacing between each fiber bundle is 0.5-100mm.

4. The ultraviolet laser-focused ionization fluid disinfection system of claim 1, wherein: The inner wall of the disinfection chamber is provided with a layer of highly reflective material.

5. The ultraviolet laser-focused ionization fluid disinfection system of claim 1, wherein: Speed ​​regulating devices are provided at the fluid inlet and fluid outlet to adjust the speed of fluid flow.

6. The ultraviolet laser-focused ionization fluid disinfection system of claim 1, wherein: 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 of claim 1, wherein: The fluid outlet is equipped with a filter screen, which is coated with a titanium dioxide coating with a thickness of 0.5~0.8mm.

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

9. The ultraviolet laser-focused ionization fluid disinfection system of any one of claims 1-8, wherein: The ultraviolet laser emitter can be replaced with a femtosecond laser.

10. A sterilizer characterized by: The system includes an ultraviolet laser focused ionization fluid disinfection system according to any one of claims 1-8.

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