A laser air sterilization chamber and sterilization device

Abstract

This invention relates to a laser air disinfection chamber and disinfection device, comprising an air inlet, a disinfection chamber, an air outlet, and a laser emitting device. The laser emitting device generates an incident laser beam. A rotating reflecting mechanism is provided in the disinfection chamber. The reflecting mechanism receives the incident laser beam and continuously generates reflected laser beams during rotation, thereby forming a disinfection laser beam network in the disinfection chamber. Each reflected laser beam is generated by a single reflection of the received incident laser beam, resulting in low laser energy reduction. Air flows into the disinfection chamber from the air inlet, and after being disinfected by the disinfection laser beam network, it flows out of the disinfection chamber from the air outlet. The laser air disinfection chamber and disinfection device provided by this invention have a simple structure, high laser utilization rate, high disinfection efficiency, and fast disinfection speed.

Description

Technical Field

[0001] This invention relates to the field of laser air disinfection, specifically to a laser air disinfection chamber and disinfection device. Background Technology

[0002] Viruses, bacteria, and other harmful microorganisms can easily exist in the air, especially during outbreaks of respiratory infectious diseases. The viruses, bacteria, and other harmful microorganisms lurking in the air seriously threaten people's health, so air disinfection has received widespread attention in recent years.

[0003] Currently, commonly used air disinfection technologies include ultraviolet (UV) disinfection, ozone disinfection, and disinfectant mopping or spraying. In comparison, UV lasers offer advantages such as fixed wavelength, high intensity, high power density, and the ability to generate higher irradiation doses in a short time. However, UV lasers are single-beam beams with a small spot coverage area. Some traditional techniques enlarge the spot before irradiating the air, while others reflect the received UV laser beam multiple times. Both methods significantly weaken the laser beam's energy, resulting in low disinfection efficiency. Therefore, achieving high-efficiency disinfection using a single-beam laser is a pressing technical problem that industry professionals need to solve. Summary of the Invention

[0004] In view of this, and to address the above problems, the present invention provides a laser air disinfection chamber and disinfection device, which has a low laser energy reduction rate, thereby improving the disinfection speed and efficiency of air.

[0005] To achieve the above objectives, the present invention provides a laser air disinfection chamber, comprising an air inlet, a disinfection chamber, an air outlet, and a laser emitting device. The laser emitting device is used to generate an incident laser beam. A rotating reflecting mechanism is provided in the disinfection chamber. The reflecting mechanism is used to receive the incident laser beam and continuously generate reflected laser beams during rotation, thereby forming a disinfection laser beam grid in the disinfection chamber. Air flows into the disinfection chamber from the air inlet and, after being disinfected by the disinfection laser beam grid, flows out of the disinfection chamber from the air outlet.

[0006] In one embodiment, the reflecting mechanism is a multi-faceted reflecting structure with two or more reflecting surfaces.

[0007] In one embodiment, the reflecting mechanism is a plane mirror, a concave mirror, a cylindrical mirror, a spherical mirror, or a Powell prism.

[0008] In one embodiment, the pitch angle of the reflector is adjustable.

[0009] In one embodiment, the reflective surface of the reflective mechanism forms an angle of 0° to 45° with the direction of airflow.

[0010] In one embodiment, the reflective mechanism is driven by a motor or electric motor, and the rotation speed of the reflective mechanism is at least 1000 revolutions per minute.

[0011] In one embodiment, the reflective mechanism is driven by a motor or electric motor, and the rotation speed of the reflective mechanism is at least 3000 revolutions per minute.

[0012] In one embodiment, the reflection mechanism is mechanically connected to the chamber wall.

[0013] In one embodiment, the laser emitting device is disposed inside or outside the disinfection chamber. When the laser emitting device is disposed outside the disinfection chamber, a light inlet is provided on the chamber wall. The laser emitted by the laser emitting device irradiates the interior of the disinfection chamber through the light inlet and forms an incident laser beam that irradiates the reflective surface of the reflective mechanism.

[0014] In one embodiment, the inner wall of the disinfection chamber is a reflective inner wall or a scattering inner wall.

[0015] In one embodiment, a scanning galvanometer is also included, which is installed inside the disinfection chamber. The laser emitted by the laser emitting device is first transmitted to the scanning galvanometer. The scanning galvanometer is used to receive the incident laser beam and continuously change the angle at which it receives the incident laser beam, thereby forming a reflected laser beam that covers the space of the disinfection chamber. A portion of the laser beam reflected by the scanning galvanometer irradiates a rotating reflecting mechanism. After receiving the laser beam, the reflecting mechanism reflects the laser beam back into the disinfection chamber.

[0016] In one embodiment, the scanning galvanometer is used to receive the reflected laser beam formed by the reflecting mechanism and continuously changes the angle at which the reflected laser beam is received, thereby enhancing the density of the disinfection laser beam network formed by the reflecting mechanism in the disinfection chamber.

[0017] In one embodiment, the scanning galvanometer is mechanically connected to the chamber wall.

[0018] A laser air sterilization device includes a laser air sterilization chamber as described above, and a fan disposed at the air inlet. The reflective mechanism is installed on the center surface of the fan, and when the fan rotates, it drives the reflective mechanism to rotate.

[0019] In one embodiment, the reflective surface of the reflective mechanism forms an angle of 45° to 90° with the center plane of the fan.

[0020] In one embodiment, the reflective mechanism is connected to the fan by adhesive, screw connection, or snap-fit.

[0021] Beneficial effects:

[0022] This invention provides a laser air disinfection chamber and disinfection device. An incident laser beam generated by a laser emitting device irradiates a rapidly rotating reflecting mechanism. The reflection by the reflecting mechanism forms a disinfection laser beam network covering the cross-section of the airflow path. Each reflected laser beam is generated by a single reflection of the received incident laser beam, resulting in low laser energy reduction. The laser air disinfection chamber and disinfection device provided by this invention have a simple structure, high laser utilization rate, high disinfection efficiency, and fast disinfection speed. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the laser air disinfection chamber structure in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the laser air disinfection chamber structure in another embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the reflection mechanism of the present invention forming a reflected laser beam;

[0026] Figure 4 This is a schematic diagram of the structure of a laser air disinfection device in one 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] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1-4As shown, this embodiment provides a laser air disinfection chamber, including an air inlet 20, a disinfection chamber 30, an air outlet 40, and a laser emitting device 60. The laser emitting device 60 generates an incident laser beam 51. A rotating reflecting mechanism 50 is provided in the disinfection chamber. The reflecting mechanism 50 receives the incident laser beam 51 and continuously generates reflected laser beams 52 during rotation, thereby forming a disinfection laser beam grid in the disinfection chamber 30. Air flows into the disinfection chamber 30 from the air inlet 20, and after being disinfected by the disinfection laser beam grid, it flows out of the disinfection chamber 30 from the air outlet 40. When the reflecting mechanism 50 rotates to different positions, the angle at which it receives the incident laser beam 51 is different, and the angle of the emitted laser beam 52 is also different. Figure 3 As shown, with the rapid rotation of the reflecting mechanism 50, a disinfection laser beam network covering the cross-section of the airflow path is formed. This disinfection laser beam network irradiates the flowing air, eliminating harmful microorganisms such as viruses and bacteria present in the air, thus achieving air disinfection. The laser air disinfection chamber structure provided in this embodiment is simple. Each reflected laser beam is generated by a single reflection of the received incident laser beam 51, avoiding the energy reduction caused by multiple reflections. This results in high laser utilization, high disinfection efficiency, and fast speed. It is understood that the laser emitted by the laser emitting device 60 is an ultraviolet laser that has a killing effect on viruses, bacteria, and other microorganisms. The incident laser beam 51 can be a laser beam directly emitted by the laser emitting device, or it can be a laser beam emitted by the laser emitting device formed after operable processing.

[0035] In one embodiment, the reflecting mechanism 50 is a multi-faceted reflecting structure with two or more reflecting surfaces. For example, the reflecting mechanism 50 is a double-sided reflecting mirror, ensuring that the reflecting mechanism 50 can receive the incident laser beam 51 regardless of its rotation angle, and ensuring that the reflected laser beam 52 formed by the reflecting mechanism 50 can form a disinfection laser beam network covering the cross-section of the airflow path. Optionally, the reflecting mechanism 50 can also be formed by three or more reflecting mirrors arranged back-to-back.

[0036] In one embodiment, the reflecting mechanism 50 is a plane mirror, a concave mirror, a cylindrical mirror, a spherical mirror, or a Powell prism. The reflecting mechanism 50 may also be formed by coating or attaching a reflective layer to an object, and it has the same function as a mirror.

[0037] In one embodiment, the reflecting surface of the reflecting mechanism 50 forms an angle of 0° to 45° with the direction of airflow. When the reflecting surface of the reflecting mechanism 50 forms a 0° angle with the direction of airflow, that is, the reflecting surface of the reflecting mechanism 50 is parallel to the direction of airflow, the incident laser beam 51 generated by the laser emitting device 60 horizontally irradiates the reflecting surface of the reflecting mechanism 50, and the reflected laser beam 52 formed by the reflecting mechanism 50 is perpendicular to the direction of airflow; when the reflecting surface of the reflecting mechanism 50 forms a certain angle with the direction of airflow, the reflected laser beam 52 formed by the emitting mechanism 50 intersects the direction of airflow at an oblique angle.

[0038] In one embodiment, the pitch angle of the reflecting mechanism 50 is adjustable, used to adjust the relative angle between the reflecting surface and the airflow direction. The reflecting mechanism 50 is installed with an adjustable structure, allowing the user to adjust the pitch angle of the reflecting mechanism according to usage needs, thereby adjusting the angle between the reflected laser beam 52 and the airflow direction. The installation structure for adjusting the pitch angle is a prior art pitch angle adjustment structure, which will not be described in detail here.

[0039] In one embodiment, the reflecting mechanism 50 is driven by a motor or electric motor to rotate at a speed of at least 1000 rpm, ensuring that the energy density of the disinfection laser beam is greater than the energy density threshold required for air disinfection. Optionally, the rotating speed of the reflecting mechanism 50 is 1200 rpm, 1500 rpm, 2000 rpm, 2500 rpm, 3000 rpm, 3500 rpm, or 4000 rpm or higher. The rapid rotation of the reflecting mechanism 50 forms a dense reflected laser beam 52, thereby creating a dense disinfection laser beam network in the disinfection chamber 30 to thoroughly disinfect the flowing air.

[0040] In one embodiment, the reflective mechanism 50 is connected to any chamber wall 31 via a mechanical connection structure. For example, the reflective mechanism 50 is connected to any chamber wall 31 via a connecting bracket 53, so that the reflective mechanism 50 is located in the disinfection chamber 30.

[0041] In one embodiment, the laser emitting device 60 is disposed inside or outside the disinfection chamber 30. When the laser emitting device 60 is disposed outside the disinfection chamber 30, a light inlet is provided on the chamber wall 31. The laser emitted by the laser emitting device 60 irradiates the interior of the disinfection chamber 30 from the light inlet and forms an incident laser beam 51 that irradiates the reflective surface of the reflective mechanism 50.

[0042] In one embodiment, the inner wall of the disinfection chamber 30 is a reflective inner wall or a scattering inner wall. When the reflected laser beam 52 formed by the reflection mechanism 50 irradiates the inner wall of the disinfection chamber 30, it is reflected back into the disinfection chamber 30 by the reflective inner wall or the scattering inner wall, thus forming a secondary enhancement of the disinfection effect.

[0043] like Figure 4 As shown, in one embodiment, a scanning galvanometer 70 is also included, installed inside the disinfection chamber 30. The scanning galvanometer 70 receives the incident laser beam 51 and continuously changes the angle at which it receives the incident laser beam 51, thereby forming a reflected laser beam that covers the space of the disinfection chamber. A portion of the laser beam reflected by the scanning galvanometer 70 irradiates a rotating reflecting mechanism 50. After receiving the laser beam, the reflecting mechanism 50 reflects the laser beam back into the disinfection chamber 30. The incident laser beam 51 is first transmitted to the scanning galvanometer 70. On the one hand, the scanning galvanometer 70 continuously changes the angle at which it receives the incident laser beam, so that the reflected laser beam covers the space of the disinfection chamber 30. On the other hand, a portion of the laser beam reflected by the scanning galvanometer 70 irradiates the rotating reflecting mechanism 50. After receiving the laser beam, the reflecting mechanism 50 reflects the laser beam back into the disinfection chamber 30, thus enhancing the density of the reflected beam. Optionally, the scanning galvanometer 70 is used to receive the reflected laser beam 52 formed by the reflecting mechanism 50 and continuously change the angle at which the reflected laser beam 52 is received, thereby further strengthening the density of the disinfection laser beam network formed by the reflecting mechanism 50 in the disinfection chamber 30 and further improving the air disinfection effect.

[0044] In one embodiment, the scanning galvanometer 70 is mechanically connected to the chamber wall 31.

[0045] like Figure 4 As shown, in one embodiment, a laser air disinfection device is provided, including the aforementioned laser air disinfection chamber and a fan 10 disposed at the air inlet. A reflecting mechanism 50 is mounted on the central surface of the fan 10, which is the surface on which the fan rotates. The reflecting mechanism 50 is concentric with the rotation axis of the fan 10. When the fan 10 rotates, it drives the reflecting mechanism 50 to rotate. The incident laser beam 51 generated by the laser emitting device 60 irradiates the reflecting surface of the reflecting mechanism 50 to form a reflected laser beam 52. The rotating reflecting mechanism 50 continuously generates reflected laser beams 52 during its rotation, thereby forming a disinfection laser beam network in the disinfection chamber 30. The laser air disinfection device provided in this embodiment does not require additional rotating drive devices; the rotation of the fan 10 can drive the rotation of the reflecting mechanism 50. Its structure is compact, energy-saving, and achieves efficient air disinfection.

[0046] In one embodiment, the reflecting surface of the reflecting mechanism 50 forms an angle of 45° to 90° with the center plane of the fan 10. For example, when the reflecting surface of the reflecting mechanism 50 forms a 90° angle with the center plane of the fan 10, the reflecting surface of the reflecting mechanism 50 is perpendicular to the center plane of the fan 10. When the angle is different, the angle between the reflected laser beam 52 generated by the reflecting mechanism 50 and the airflow direction is also different. The specific principle is the same as the angle between the reflecting surface of the reflecting mechanism and the airflow direction, which will not be elaborated here. As an example, the fan speed is 3000 RPM (r / min), the air volume is 3000 cubic meters per hour, the pipe area is 1 square meter, the wind speed is 0.83 meters per second, and the time required for the fan to complete one revolution is 0.02 seconds, meaning it takes 0.02 seconds for the light to scan one revolution. Within 0.02 seconds, the air moves forward 0.02 seconds × 0.83 meters per second, which equals 0.0166 meters. This distance is less than the diameter of a typical laser beam (2 to 3 millimeters). In other words, within the distance the laser has swept, before the air has flowed past, laser irradiation can be used for disinfection.

[0047] In one embodiment, the reflective mechanism 50 is connected to the fan 10 by means of adhesive, screw connection or snap-fit.

[0048] 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.

[0049] 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. A laser air sterilization chamber, characterized in that: It includes an air inlet, a disinfection chamber, an air outlet, and a laser emitting device. The laser emitting device is used to generate an incident laser beam. The disinfection chamber is equipped with a rotating reflecting mechanism, which is used to receive the incident laser beam and continuously generate reflected laser beams during rotation, thereby forming a disinfection laser beam grid in the disinfection chamber. Air flows into the disinfection chamber from the air inlet, and after being disinfected by the disinfection laser beam grid, it flows out of the disinfection chamber from the air outlet.

2. The laser air sterilization chamber according to claim 1, characterized in that: The reflection mechanism is a multi-faceted reflection structure with two or more reflecting surfaces.

3. The laser air sterilization chamber according to claim 1, characterized in that: The reflecting mechanism is a plane mirror, a concave mirror, a cylindrical mirror, a spherical mirror, or a Powell prism.

4. The laser air sterilization chamber according to claim 1, characterized in that: The pitch angle of the reflection mechanism is adjustable.

5. A laser air sterilization chamber according to claim 1, characterized in that: The reflective surface of the reflective mechanism forms an angle of 0° to 45° with the direction of airflow.

6. A laser air sterilization chamber according to claim 1, characterized in that: The reflective mechanism is driven by a motor or electric motor, and the rotation speed of the reflective mechanism is at least 1000 revolutions per minute.

7. A laser air sterilization chamber according to claim 1, characterized in that: The reflective mechanism is driven by a motor or electric motor, and the rotation speed of the reflective mechanism is at least 3000 revolutions per minute.

8. A laser air sterilization chamber according to claim 1, characterized in that: The reflection mechanism is mechanically connected to the chamber wall.

9. A laser air sterilization chamber according to claim 1, characterized in that: The laser emitting device is located inside or outside the disinfection chamber. When the laser emitting device is located outside the disinfection chamber, a light inlet is provided on the chamber wall. The laser emitted by the laser emitting device shines into the disinfection chamber through the light inlet and forms an incident laser beam that shines on the reflective surface of the reflective mechanism.

10. A laser air sterilization chamber according to claim 1, characterized in that: The inner wall of the disinfection chamber is a reflective inner wall or a scattering inner wall.

11. A laser air sterilization chamber according to any one of claims 1-10, characterized in that: It also includes a scanning galvanometer installed inside the disinfection chamber. The scanning galvanometer is used to receive the incident laser beam and continuously change the angle at which it receives the incident laser beam, thereby forming a reflected laser beam that covers the space of the disinfection chamber. A portion of the laser beam reflected by the scanning galvanometer irradiates a rotating reflecting mechanism, and the reflecting mechanism receives the laser beam and then reflects the laser beam back into the disinfection chamber.

12. A laser air sterilization chamber according to any one of claims 1-10, characterized in that: It also includes a scanning galvanometer installed inside the disinfection chamber. The scanning galvanometer is used to receive the reflected laser beam formed by the reflecting mechanism and continuously change the angle at which the reflected laser beam is received, thereby strengthening the density of the disinfection laser beam network formed by the reflecting mechanism in the disinfection chamber.

13. A laser air sterilization chamber according to claim 11, characterized in that: The scanning galvanometer is mechanically connected to the chamber wall.

14. A laser air sterilization device, characterized in that: The laser air disinfection chamber according to any one of claims 1-13 further includes a fan disposed at the air inlet, the reflective mechanism is mounted on the center surface of the fan, and the fan drives the reflective mechanism to rotate when it rotates.

15. A laser air sterilization device according to claim 14, characterized in that: The reflective surface of the reflective mechanism forms an angle of 45° to 90° with the center plane of the fan.

16. A laser air sterilization device according to claim 14, characterized in that: The reflective mechanism is connected to the fan by means of adhesive, screws, or snap-fit.

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