Ultraviolet light source sterilization device and sterilization method

Abstract

The present invention relates to an ultraviolet light source sterilization device, comprising: a bracket (1), a support rod (2), a support seat (3) and a light source sterilization structure (4), wherein the mounting end of the support rod (2) is connected to the bracket (1), and the free end is connected to the support seat (3), the support rod (2) is reciprocatingly supported on the bracket (1) through the mounting end, the support seat (3) can rotate with the free end as an axis, and the light source sterilization structure (4) is supported on the support seat (3) so as to adjust the irradiation angle. The ultraviolet light source sterilization device of the present invention has a self-contained distance measurement function, and can adjust the sterilization time in real time according to different sterilization distances to achieve uniform, accurate and efficient sterilization; the ultraviolet truncated conical groove array design is adopted, so that the ultraviolet sterilization lamp has a high degree of directionality, and at the same time, the attenuation of ultraviolet power can be reduced. The ultraviolet light source sterilization device of the present invention can achieve 360-degree sterilization without dead angles in an independent space.

Description

Technical Field

[0001] The present invention relates to the technical field of sterilization devices, and in particular to an ultraviolet light source sterilization device and a sterilization method. Background Art

[0002] Bacteria are everywhere in the environment where people live. Most of these bacteria are harmful to health, such as Escherichia coli and Clostridium tetani. At the same time, viruses are always around us, threatening our human health. Because ultraviolet rays can destroy the molecular bonds of bacterial deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), destroy the original bacterial colonies and prevent the replication and reproduction of bacteria, ultraviolet rays can kill bacteria and viruses. Ultraviolet sterilization technology uses high-intensity ultraviolet rays to directly kill various microorganisms such as bacteria, viruses, and parasites. Ultraviolet sterilization has a broad spectrum and high efficiency, and has the ability to kill most bacteria and viruses in seconds, so it is currently widely used in people's livelihood, medical and manufacturing industries.

[0003] In order to deal with the rampant bacteria and make the living environment more sterile and safe, various sterilization and disinfection devices have been manufactured. The most popular ones are portable sterilization devices, such as UV Band-Aids, UV sterilization bags, and handheld surface sterilizers. At the same time, various water sterilization devices have also been manufactured, such as UV sterilization humidifiers, UV static water sterilization devices, and UV dynamic water sterilization devices. These sterilization devices have largely met people's needs for close-range surface sterilization, close-range air sterilization, and close-range water sterilization.

[0004] There is a great demand for sterilization at close range, but there are also many application scenarios for sterilization at long distances in large spaces. However, existing UV sterilization technology has the following disadvantages:

[0005] 1. The existing ultraviolet rays have very poor directionality, and the sterilization energy is very difficult to concentrate, making it difficult to achieve efficient sterilization.

[0006] 2. Ultraviolet rays propagate in the air and water in an exponential attenuation law, which will inevitably lead to a significant reduction in the power of ultraviolet rays after long-distance transmission, and a significant decrease in the efficiency of sterilization and disinfection, and may even fail to play a sterilization and disinfection role.

[0007] 3. There is no way to measure the sterilization distance, and it is impossible to sense and calculate the loss of ultraviolet energy at different distances.

[0008] 4. Unable to sterilize a large area at multiple angles.

[0009] 5. Long-distance ultraviolet rays cannot be focused in a directional manner, resulting in low sterilization efficiency;

[0010] 6. Handheld sterilization equipment requires human assistance and is prone to omissions and incomplete sterilization;

[0011] 7. The existing sterilization equipment cannot detect the sterilization distance, and thus cannot calculate the required sterilization time;

[0012] 8. The dose reaching the sterilization surface is uneven, resulting in uneven sterilization rate

[0013] Due to the above shortcomings of long-distance sterilization and disinfection, long-distance sterilization appears to be very inefficient, so solving the above shortcomings is particularly important for the application expansion of long-distance ultraviolet sterilization and disinfection. Summary of the invention

[0014] The object of the present invention is to solve at least one problem in the above-mentioned background technology and to provide an ultraviolet light source sterilization device and a sterilization method.

[0015] To achieve the above-mentioned purpose, the present invention provides an ultraviolet light source sterilization device, comprising: a bracket, a support rod, a support seat and a light source sterilization structure, the mounting end of the support rod is connected to the bracket, and the free end is connected to the support seat, the support rod is reciprocatingly supported on the bracket through the mounting end, the support seat can rotate with the free end as the axis, and the light source sterilization structure is supported on the support seat so that the irradiation angle can be adjusted.

[0016] According to one aspect of the present invention, the bracket includes a base and a support rod supported on the base, and a slide rail is provided on the support rod.

[0017] According to one aspect of the present invention, a slide seat is provided at the mounting end of the support rod, and the slide seat is cooperatively connected with the slide rail and can reciprocate on the slide rail.

[0018] According to one aspect of the present invention, an annular slide rail is provided on the outer wall of the free end of the support rod, and the support seat is supported on the free end so as to be rotatable along the annular slide rail.

[0019] According to one aspect of the present invention, the light source sterilization structure includes a light source sterilization panel and a positioning rod, one end of the positioning rod is fixedly connected to the support seat, and the other end is rotatably connected to the light source sterilization panel.

[0020] According to one aspect of the present invention, the light source sterilization panel includes a sterilization panel, a plurality of ultraviolet LED lamps and a plurality of infrared laser ranging probes arranged on the sterilization panel, and a UV light-emitting surface supported on the sterilization panel for covering the ultraviolet LED lamps and the infrared laser ranging probes.

[0021] According to one aspect of the present invention, the sterilization panel is composed of a plurality of sterilization modules, and a plurality of the ultraviolet LED lamps are evenly and orderly arranged on each of the sterilization modules to form a plurality of ultraviolet LED sterilization module groups.

[0022] According to one aspect of the present invention, the wavelength of the ultraviolet LED lamp is 200nm to 320nm, and the wavelength of the ultraviolet LED lamp is continuously adjustable.

[0023] According to one aspect of the present invention, the chip of the ultraviolet LED lamp is made of AlGaN system materials.

[0024] According to one aspect of the present invention, the structure of the chip of the ultraviolet LED lamp is that a non-doped AlGaN layer, an N-type doped AlGaN layer, an AlGaN quantum well layer and a P-type AlGaN layer are sequentially grown on a substrate.

[0025] According to one aspect of the present invention, the substrate may be a silicon substrate, a quartz substrate, a glass substrate, a sapphire substrate or a silicon carbide substrate.

[0026] According to one aspect of the present invention, the chip structure of the ultraviolet LED lamp is grown by MOCVD, MBE or HVPE.

[0027] According to one aspect of the present invention, each of the sterilization modules is provided with a plurality of inverted truncated conical grooves arranged evenly and orderly, and the ultraviolet LED lamp is installed in the inverted truncated conical grooves.

[0028] According to one aspect of the present invention, the infrared laser ranging probes are arranged at the center and around the sterilization panel.

[0029] To achieve the above object, the present invention also provides a sterilization method using the above ultraviolet light source sterilization device, comprising the steps of:

[0030] Determining the distance between the light source sterilization structure and the surface to be sterilized;

[0031] Planning the irradiation path of the ultraviolet light source on the light source sterilization structure;

[0032] The irradiation path is executed so that the sterilization rate of each point on the irradiation path is the same.

[0033] According to one aspect of the present invention, a method for executing the irradiation path so that the sterilization rate of each point on the irradiation path is the same is as follows: according to the distance between the ultraviolet light source and the surface to be sterilized, the irradiation time or irradiation intensity of the ultraviolet light source at each point on the irradiation path is adjusted to achieve a consistent sterilization rate at each point.

[0034] According to one solution of the present invention, each sterilization module is provided with a plurality of inverted truncated conical grooves arranged evenly and orderly, and the ultraviolet LED lamp is installed in the inverted truncated conical groove. In this way, the truncated conical groove forms the shape of a flared water cup, and the ultraviolet LED lamp arranged therein can effectively radiate the irradiated light, so that the sterilization light is more dispersed and the sterilization area is larger. When the plurality of truncated conical grooves and the ultraviolet LED lamp are assembled in the sterilization module, the light can be diffused to overlap without dead angles, so that the surface to be sterilized per unit area can be effectively sterilized without dead angles, making the sterilization more thorough and effective, and ensuring the sterilization efficiency.

[0035] According to one solution of the present invention, infrared laser distance measuring probes are arranged at the center and around the sterilization panel. That is, multiple infrared laser distance measuring probes are evenly arranged on the sterilization panel. With such arrangement, in the process of adjusting the sterilization panel for sterilization, the precise distance between each point on the sterilization surface and the sterilization panel can be effectively known through the infrared laser distance measuring probes arranged thereon, so that the sterilization intensity and sterilization time can be effectively adjusted according to the distance, so that the sterilization effect and sterilization rate of each point on the sterilization surface are consistent.

[0036] According to the scheme of the present invention, many disadvantages of handheld sterilization equipment such as cumbersome operation, time-consuming and labor-intensive, and uneven and thorough sterilization are solved; the ultraviolet light source sterilization device of the present invention has a self-measuring function, which can adjust the sterilization time in real time according to different sterilization distances to achieve uniform, accurate and efficient sterilization; the ultraviolet light source sterilization device of the present invention adopts an ultraviolet light source or an ultraviolet laser as a sterilization light source, and adopts an array design of ultraviolet truncated conical grooves (reflection cups), so that the ultraviolet sterilization lamp has a high degree of directionality, and can reduce the attenuation of ultraviolet power. In addition, according to the size of the space, ultraviolet LED lamp beads of different numbers and powers can be integrated on the sterilization module; the ultraviolet light source sterilization device of the present invention has a height-fixed bracket and a height-adjustable support rod (electric lifting rod), and at the same time has an automatically rotatable support seat, and the automatic rotation angle is 360 degrees; it also has a sterilization panel that can be pitched, and the pitch angle is ±90 degrees; the ultraviolet light source sterilization device of the present invention can achieve 360-degree sterilization without dead angles in an independent space. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 and Figure 2 A perspective view schematically showing an ultraviolet light source sterilization device according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of a front view of a light source sterilization panel according to an embodiment of the present invention;

[0039] Figure 4A schematic diagram showing the connection between a truncated cone-shaped groove and an ultraviolet LED lamp according to an embodiment of the present invention;

[0040] Figure 5 A flow chart schematically showing a sterilization method according to the present invention;

[0041] Figure 6 Schematic representation of the principle diagram of germicidal irradiation dosage. DETAILED DESCRIPTION

[0042] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0043] Figure 1 and Figure 2 A schematic diagram of a stereoscopic view of an ultraviolet light source sterilization device according to an embodiment of the present invention is shown. Figure 1 As shown, the ultraviolet light source sterilization device according to the present invention comprises: a bracket 1, a support rod 2, a support seat 3 and a light source sterilization structure 4. In this embodiment, the mounting end of the support rod 2 (i.e. Figure 1 The lower end) is slidably connected to the bracket 1, and the free end (i.e. Figure 1 The upper and middle ends of the support rods 2 are connected to the support base 3, and the support rod 2 can be supported on the support 1 by the mounting end so as to move up and down reciprocatingly, that is, the support rod 2 can slide up and down on the support 1. The support base 3 can rotate with the upper free end of the support rod 2 as the axis, such as Figure 1 As shown, the support seat 3 is a cylinder as a whole, and the center of the cylinder actually has a through hole, and the upper end of the support rod 2 extends into the through hole of the support seat 3, and the support seat 3 can rotate on the free end of the support rod 2 with the support rod 2 as the axis, so that the light source sterilization structure 4 supported on the support seat 3 can be driven to rotate. Not only that, the light source sterilization structure 4 can also perform flipping movements in the up and down directions, so that the irradiation angle can be adjusted. It can be seen that the light source sterilization structure 4 with an ultraviolet light source can be arranged through the above-mentioned bracket 1, support rod 2, support seat 3 and its own structure and structural relationship, and can realize free adjustment of the spatial position, so that large-area multi-angle scanning sterilization and 360-degree sterilization without dead angles in an independent space can be realized, so that the sterilization is uniform and comprehensive, and the sterilization effect is effectively improved.

[0044] Furthermore, if Figure 2As shown, in this embodiment, the bracket 1 includes a base 101 and a support rod 102 supported on the base 101, wherein the support rod 102 is provided with a slide rail 1021. A slide seat 201 is provided at the mounting end of the support rod 2, and the slide seat 201 is slidably connected with the slide rail 1021, so that the support rod 2 can reciprocate up and down on the support rod 102. In this embodiment, the slide seat 201 can be electrically driven to reciprocate on the slide rail 1021.

[0045] Furthermore, in the present embodiment, the outer wall of the free end of the support rod 2 is provided with an annular slide rail, and the inner wall of the support seat 3 is provided with a structure that is slidably connected with the annular slide rail, so that the support seat 3 can rotate through the annular slide rail at the free end of the support rod 2. In the present embodiment, the annular slide rail can be an annular groove or an annular protrusion, and the structure that cooperates with it can be an annular protrusion or an annular groove. Of course, other ways to realize the rotation of the support seat 3 with the support rod 2 as the axis also fall within the scope of the present invention. With such a configuration, the light source sterilization structure 4 can be freely rotated at the free end of the support rod through the support seat 3, so that the sterilization angle and sterilization range in the horizontal circumferential direction can be arbitrarily adjusted during the sterilization process, making the operation more flexible and convenient, and the work efficiency higher.

[0046] Furthermore, if Figure 1 and Figure 2 As shown, in this embodiment, the light source sterilization structure 4 includes a light source sterilization panel 401 and a positioning rod 402, wherein the left end of the positioning rod 402 is fixedly connected to the support seat 3, and the right end is rotatably connected to the light source sterilization panel 401. With such a configuration, the light source sterilization panel 401 can perform a pitching motion with the end of the positioning rod 402 as a fulcrum, that is, the above-mentioned flipping motion in the up and down directions, so that the sterilization angle and sterilization range in the vertical direction can be arbitrarily adjusted, making the sterilization action more flexible and changeable, and the sterilization range is further expanded, saving manpower and material resources, and improving work efficiency.

[0047] Further, Figure 3 The figure schematically shows a front view of a light source sterilization panel according to an embodiment of the present invention. Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the light source sterilization panel 401 includes a sterilization panel 4011, a plurality of ultraviolet LED lamps 4012 and a plurality of infrared laser ranging probes 4013 arranged on the sterilization panel 4011, and a UV light emitting surface 4014 supported on the sterilization panel 4011 for covering the ultraviolet LED lamps 4012 and the infrared laser ranging probes 4013. Figure 3As shown, in this embodiment, the sterilization panel 4011 is composed of a plurality of sterilization modules a, and a plurality of ultraviolet LED lamps 4012 are evenly and orderly arranged on each sterilization module a to form a plurality of ultraviolet LED sterilization modules A. In this embodiment, the wavelength of the ultraviolet LED lamp 4012 is 200nm to 320nm, and the wavelength of the ultraviolet LED lamp is continuously adjustable. The chip of the ultraviolet LED lamp 4012 is made of AlGaN system materials, and the structure of the chip of the ultraviolet LED lamp 4012 is to sequentially grow a non-doped AlGaN layer, an N-type doped AlGaN layer, an AlGaN quantum well layer and a P-type AlGaN layer on a substrate. Among them, the substrate can be a silicon substrate, a quartz substrate, a glass substrate, a sapphire substrate or a silicon carbide substrate. The structure of the chip of the ultraviolet LED lamp 4012 can be grown by MOCVD, MBE or HVPE. Such a setting can greatly improve the optical power of the ultraviolet LED lamp, increase the energy of the ultraviolet light, and thus improve the sterilization intensity and sterilization efficiency.

[0048] Figure 4 The figure schematically shows a connection diagram of a truncated cone-shaped groove and a UV LED lamp according to an embodiment of the present invention. Figure 3 and Figure 4 As shown, in this embodiment, each sterilization module a is provided with a plurality of inverted truncated cone grooves a1 arranged evenly and orderly, and the ultraviolet LED lamp 4012 is installed in the inverted truncated cone groove a1. In this way, the truncated cone groove a1 forms the shape of a flared water cup, and the ultraviolet LED lamp 4012 is arranged therein to radiate light according to the inner wall of the truncated cone groove a1, so that the sterilization light is dispersed according to the trajectory, and the sterilization area is moderate. In this way, when the plurality of truncated cone grooves a1 and the ultraviolet LED lamp 4012 are assembled in the sterilization module a, all the emitted light can be diffused to overlap without dead angles, so that the surface to be sterilized per unit area can be sterilized without dead angles, making the sterilization more thorough and effective, ensuring the sterilization efficiency, and because the truncated cone groove a1 can play a certain focusing effect (i.e., reducing the degree of light diffusion to the surroundings), the light is more concentrated, the sterilization intensity is higher, and the sterilization effect is better.

[0049] Moreover, Figure 3As shown, in this embodiment, the infrared laser distance measuring probe 4013 is arranged at the center and around the sterilization panel 4011. That is, a plurality of infrared laser distance measuring probes 4013 are evenly arranged on the sterilization panel 4011. In this way, in the process of adjusting the sterilization panel 4011 for sterilization, the accurate distance between each point on the sterilization surface and the sterilization panel 4011 can be effectively known through the infrared laser distance measuring probe 4013 arranged thereon, so that the sterilization intensity and sterilization time can be effectively adjusted according to the distance, so that the sterilization effect and sterilization rate of each point on the sterilization surface are consistent.

[0050] Furthermore, the present invention also provides a sterilization method using the above-mentioned ultraviolet light source sterilization device, the flow chart of which is as follows: Figure 5 As shown, the specific steps are as follows:

[0051] a. Determine the distance between the light source sterilization structure 4 and the surface to be sterilized;

[0052] b. Planning the irradiation path of the ultraviolet light source on the light source sterilization structure 4;

[0053] c. Execute the irradiation path so that the sterilization rate at each point on the irradiation path is the same.

[0054] According to one embodiment of the present invention, a method for executing an irradiation path so that the sterilization rate of each point on the irradiation path is the same is as follows: according to the distance between the ultraviolet light source and the surface to be sterilized, the irradiation time or irradiation intensity of the ultraviolet light source at each point on the irradiation path is adjusted to achieve a consistent sterilization rate at each point.

[0055] In this embodiment, the irradiation path of the method can be preset, and the irradiation time or irradiation intensity of the ultraviolet light at each point on the irradiation path of the method is set according to the distance between the ultraviolet light source and the surface to be disinfected.

[0056] Figure 6 Schematic diagram showing the principle of germicidal irradiation dose. Figure 6 As shown, for example, if the irradiation intensity P0 at the point on the unit distance L0 meets a certain sterilization rate requirement, the irradiation dose at the point must reach W0, where W0=P0*T0, and T0 is the irradiation time of the point.

[0057] At a distance of L i The irradiation intensity P at each point on i , the exposure time of ultraviolet rays at this point is T i , by adjusting T i Reach adjustment W i The purpose is to achieve the same sterilization rate at each point on the irradiation path, that is, W i =W0.

[0058] It is worth noting that the existing disinfection and sterilization method of ultraviolet mercury lamp adopts a scattering method for disinfection and sterilization of a specific space, which has weak directivity and the light source point is at different distances from each point on the irradiation path, resulting in uneven irradiation dose at each point in the specific space, that is, the irradiation dose at some points is too large, and the irradiation dose at some points is too small.

[0059] The present invention adopts a highly directional concentrated ultraviolet light source for scanning irradiation (ie the above-mentioned structural form). This improvement can achieve the same irradiation dose for each point in a specific space, that is, the same sterilization rate, and achieve good uniformity.

[0060] In fact, the uniformity described in the present invention means that the sterilization rate of each point in a specific space is the same. The meaning of uniformity here is that there must be no omissions in the disinfection and no points with a sterilization rate lower than the average. Because the missed points will spread bacteria and fail to achieve the real purpose of disinfection. Therefore, the uniformity of the sterilization rate is of great significance.

[0061] Furthermore, according to the above-mentioned solution of the present invention, the solution of the present invention is further described in detail in the following in the form of several specific embodiments.

[0062] Example 1

[0063] An ultraviolet LED sterilization device used in hotel guest rooms includes the following components, manufacturing and use processes:

[0064] (1) The base of the UV LED sterilization device for hotel guest rooms is designed to be movable. The base is made of stainless steel, with a length, width and height of 500mm*500mm*100mm respectively. A universal wheel is fixed on each of the four corners of the base, so it can be pushed to the guest room for trial use;

[0065] (2) A fixed-height support rod and a height-adjustable support rod (electric) are installed on the base. The height of the support rod is 2 meters, and the range of the support rod is 0.5 meters to 2 meters. The total height that can be raised and lowered is 0.5 meters to 4 meters;

[0066] (3) The support seat is installed on the support rod, and the support seat can rotate 360 ​​degrees around the support rod;

[0067] (4) The light source sterilization panel that can be tilted is installed at the end of the support seat, and the tilt angle is ±90 degrees. The size of the sterilization panel is 400mm*400mm, and a cooling device is installed on the back of the sterilization panel;

[0068] (5) A sterilization UV LED lamp with a truncated cone groove array is installed on the sterilization panel. The inclination angle of the truncated cone groove is 30 degrees, and the truncated cone groove is made of aluminum-plated material. The UV LED lamp is installed at the bottom of the truncated cone groove, and the diameter of the bottom is 5 mm. The wavelength of the UV LED lamp is 265nm, and the lamp beads are arranged in 20 horizontal and vertical rows, for a total of 400. The total power of the 400 lamps is 4W;

[0069] (6) The ranging infrared laser probe embedded in the sterilization panel is installed at the center of the sterilization panel, with a total of 1 ranging probe, which can measure the distance between the center of the panel and the surface of the object;

[0070] (7) The control software for calculating the sterilization time can control the rotation speed of the rotating rod to control the sterilization time. The principle of calculating the sterilization time is the inverse ratio of the distance. When the distance is farther, the power at the surface of the object is lower and the sterilization time is longer. Conversely, when the distance is closer, the power at the surface of the object is higher and the sterilization time is shorter.

[0071] (8) The calculation of sterilization time is designed based on a fixed irradiation dose. Based on experimental test data, the UV irradiance at different distances is set. Under a fixed irradiation dose, the sterilization time is calculated based on the irradiance at different distances, thereby calculating the rotation speed.

[0072] (9) The sterilization device is pushed to the center of the guest room for all-round scanning and sterilization. The scanning and sterilization starts from the top of the wall and ends at the bottom of the floor, completing 360-degree coverage of the entire guest room.

[0073] Example 2

[0074] An ultraviolet LED sterilization device used in school classrooms includes the following components and manufacturing and use processes:

[0075] (1) The base of the UV LED sterilization device for school classrooms is designed to be movable. The base is made of stainless steel, with a length, width and height of 100mm*100mm*100mm respectively. The base is directly fixed on the roof of the classroom and hung down;

[0076] (2) A fixed-height support rod and a height-adjustable support rod (electric) are installed on the base. The height of the support rod is 0.5 meters, and the range of the support rod is 0.2 meters to 0.5 meters. The total height that can be raised and lowered is 0.5 meters;

[0077] (3) The support seat is installed on the support rod, and the support seat can rotate 360 ​​degrees around the support rod;

[0078] (4) The pitchable sterilization panel is installed at the end of the rotating rod, and the pitch angle is ±90 degrees. The size of the sterilization panel is 500mm*500mm, and a cooling device is installed on the back of the sterilization panel;

[0079] (5) A sterilization UV LED lamp with a truncated cone groove array is installed on the sterilization panel. The inclination angle of the reflector cup is 45 degrees, and the truncated cone groove is made of aluminum-plated material. The UV LED lamp beads are installed at the bottom of the truncated cone groove, and the diameter of the bottom is 5 mm. The wavelength of the UV lamp beads is 270nm, and the lamp beads are arranged in 30 horizontal and vertical rows, for a total of 900 beads. The total power of the 900 beads is 9W;

[0080] (6) The ranging infrared laser probes embedded in the sterilization panel are installed at the four corners and the center of the sterilization panel, with a total of 5 ranging probes. The probes can measure the distance between the center of the panel and the surface of the object;

[0081] (7) The control software for calculating the sterilization time can control the rotation speed of the rotating rod to control the sterilization time. The principle of calculating the sterilization time is the inverse ratio of the distance. When the distance is farther, the power at the surface of the object is lower and the sterilization time is longer. Conversely, when the distance is closer, the power at the surface of the object is higher and the sterilization time is shorter.

[0082] (8) The calculation of sterilization time is designed based on a fixed irradiation dose. Based on experimental test data, the UV irradiance at different distances is set. Under a fixed irradiation dose, the sterilization time is calculated based on the irradiance at different distances, thereby calculating the rotation speed.

[0083] (9) The sterilization device is pushed to the center of the guest room for all-round scanning and sterilization. The scanning and sterilization starts from the top of the wall and ends at the bottom of the floor, completing 360-degree coverage of the entire guest room.

[0084] Example 3

[0085] An ultraviolet LED sterilization device used in hospital wards includes the following components and manufacturing and use processes:

[0086] (1) The base of the UV LED sterilization device for hospital wards is designed to be movable. The base is made of stainless steel, with a length, width and height of 100mm*100mm*100mm respectively. The base is directly fixed on the wall of the hospital ward;

[0087] (2) A fixed-height support rod and an adjustable-length support rod (electric) are installed on the base. The height of the support rod is 1 meter, and the range of the support rod is 0.5 to 1 meter. The total height that can be raised and lowered is 1 meter;

[0088] (3) The support seat is installed on the support rod, and the support seat can rotate 360 ​​degrees around the support rod;

[0089] (4) The pitchable sterilization panel is installed at the end of the rotating rod, and the pitch angle is ±90 degrees. The size of the sterilization panel is 500mm*500mm, and a cooling device is installed on the back of the sterilization panel;

[0090] (5) The sterilization panel is equipped with a sterilizing UV LED lamp bead with a truncated cone groove array. The inclination angle of the reflector cup is 45 degrees, and the truncated cone groove is made of aluminum-plated material. The UV LED lamp bead is installed at the bottom of the truncated cone groove, and the bottom diameter is 5mm. The wavelength of the UV lamp bead is 270nm, and the lamp bead is arranged in 50 horizontal and vertical rows, for a total of 2500 beads. The total power of 2500 beads is 25W;

[0091] (6) The ranging infrared laser probes embedded in the sterilization panel are installed at the four corners and the center of the sterilization panel, with a total of 5 ranging probes. The probes can measure the distance between the center of the panel and the surface of the object;

[0092] (7) The control software for calculating the sterilization time can control the rotation speed of the rotating rod to control the sterilization time. The principle of calculating the sterilization time is the inverse ratio of the distance. When the distance is farther, the power at the surface of the object is lower and the sterilization time is longer. Conversely, when the distance is closer, the power at the surface of the object is higher and the sterilization time is shorter.

[0093] (8) The calculation of sterilization time is designed based on a fixed irradiation dose. Based on experimental test data, the UV irradiance at different distances is set. Under a fixed irradiation dose, the sterilization time is calculated based on the irradiance at different distances, thereby calculating the rotation speed.

[0094] (9) The sterilization device is pushed to the center of the guest room for all-round scanning and sterilization. The scanning and sterilization starts from the top of the wall and ends at the bottom of the floor, completing 360-degree coverage of the entire guest room.

[0095] According to the above scheme of the present invention, many drawbacks of handheld sterilization equipment are solved; the ultraviolet light source sterilization device of the present invention has a self-measuring function, which can adjust the sterilization time according to different sterilization distances in real time to achieve uniform, accurate and efficient sterilization; the ultraviolet light source sterilization device of the present invention adopts an ultraviolet light source or an ultraviolet laser as a sterilization light source, and adopts an array design of ultraviolet truncated conical grooves (reflection cups), so that the ultraviolet sterilization lamp has a high degree of directionality, and at the same time can reduce the attenuation of ultraviolet power. In addition, according to the size of the space, different numbers and powers of ultraviolet LED lamp beads can be integrated on the sterilization module; the ultraviolet light source sterilization device of the present invention is provided with a height-fixed bracket 1 and a height-adjustable support rod 2 (electric lifting rod), and the lifting height of the automatic lifting rod is 10 meters; at the same time, it is provided with an automatically rotatable support seat 3, and the automatic rotation angle is 360 degrees; it is also provided with a sterilization panel that can be pitched, and the pitch angle is ±90 degrees; the ultraviolet light source sterilization device of the present invention can achieve 360-degree sterilization without dead angles in an independent space.

[0096] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A UV light source sterilization device, characterized in that: include: A support (1), a support rod (2), a support seat (3) and a light source sterilization structure (4), wherein the support (1) comprises a base (101) and a support rod (102) supported on the base (101), a slide rail (1021) is provided on the support rod (102), the mounting end of the support rod (2) is connected to the support (1), and the free end is connected to the support seat (3), an annular slide rail is provided on the outer wall of the free end of the support rod (2), the support seat (3) can be supported on the free end for rotational movement along the annular slide rail, the support rod (2) can be reciprocatingly supported on the support (1) through the mounting end, the support seat (3) can rotate with the free end as an axis, and the light source sterilization structure (4) can be supported on the support seat (3) for adjusting the irradiation angle; The light source sterilization structure (4) comprises a light source sterilization panel (401) and a positioning rod (402), one end of the positioning rod (402) is fixedly connected to the support seat (3), and the other end is rotatably connected to the light source sterilization panel (401); The light source sterilization panel (401) comprises a sterilization panel (4011), a plurality of ultraviolet LED lamps (4012) and a plurality of infrared laser ranging probes (4013) arranged on the sterilization panel (4011), and a UV light emitting surface (4014) supported on the sterilization panel (4011) for covering the ultraviolet LED lamps (4012) and the infrared laser ranging probes (4013); The sterilization panel (4011) is composed of a plurality of sterilization modules (a), and the plurality of ultraviolet LED lamps (4012) are evenly and orderly arranged on each of the sterilization modules (a) to form a plurality of ultraviolet LED sterilization modules (A); Each of the sterilization modules (a) is provided with a plurality of inverted truncated conical grooves (a1) arranged evenly and orderly, and the ultraviolet LED lamp (4012) is installed in the inverted truncated conical grooves (a1).

2. The ultraviolet light source sterilization device according to claim 1, characterized in that: A sliding seat (201) is provided at the mounting end of the support rod (2); the sliding seat (201) is cooperatively connected to the sliding rail (1021) and can reciprocate on the sliding rail (1021).

3. The ultraviolet light source sterilization device according to claim 1, characterized in that: The wavelength of the ultraviolet LED lamp (4012) is 200nm to 320nm, and the wavelength of the ultraviolet LED lamp is continuously adjustable.

4. The ultraviolet light source sterilization device according to claim 1, characterized in that: The chip of the ultraviolet LED lamp (4012) is made of AlGaN system materials.

5. The ultraviolet light source sterilization device according to claim 1, characterized in that: The chip of the ultraviolet LED lamp (4012) has a structure in which a non-doped AlGaN layer, an N-type doped AlGaN layer, an AlGaN quantum well layer and a P-type AlGaN layer are sequentially grown on a substrate.

6. The ultraviolet light source sterilization device according to claim 5, characterized in that: The substrate is a silicon substrate, a quartz substrate, a glass substrate, a sapphire substrate or a silicon carbide substrate.

7. The ultraviolet light source sterilization device according to claim 1, characterized in that: The infrared laser ranging probe (4013) is arranged at the center and around the sterilization panel (4011).

8. A sterilization method using the ultraviolet light source sterilization device according to any one of claims 1 to 7, characterized in that: Includes steps: Determining the distance between the light source sterilization structure (4) and the surface to be sterilized; Planning the irradiation path of the ultraviolet light source on the light source sterilization structure (4); The irradiation path is executed so that the sterilization rate of each point on the irradiation path is the same.

9. The sterilization method according to claim 8, characterized in that: The method for executing the irradiation path to make the sterilization rate of each point on the irradiation path the same is: according to the distance between the ultraviolet light source and the surface to be sterilized, the irradiation time or irradiation intensity of the ultraviolet light source at each point on the irradiation path is adjusted to achieve the same sterilization rate at each point.

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