Circumferential global irradiation ultraviolet sterilization unit and device

Abstract

The application discloses a kind of all-around global irradiation ultraviolet sterilization unit and device, belong to water treatment technical field.The application structure is novel and reasonable, and ultraviolet sterilization light source is evenly distributed in the circumferential direction of tubular main body in a ring shape, can evenly radiate ultraviolet light in the circumferential direction of inner cavity fluid, eliminate radiation blind area, realize global irradiation ultraviolet sterilization.Further, ultraviolet sterilization light source is evenly arranged in the outside of main body according to 120 ° circumferential direction ring, and ultraviolet sterilization light source with 120 ° emitting angle is used, ultraviolet sterilization light source arrangement layout and light source wide-angle emitting characteristics are accurately matched, so that ultraviolet light can realize all-around, dead angle-free, full-coverage irradiation in sterilization cavity, effectively improve the problem of uneven distribution of irradiation intensity in cavity.Compared with the traditional single side, single surface irradiation structure, the application can effectively avoid sterilization blind area, improve the utilization rate of ultraviolet light, strengthen the medium ultraviolet contact effect, significantly improve the overall sterilization efficiency and sterilization quality under large-flow working condition.

Description

Technical Field

[0001] This invention belongs to the field of water treatment technology and relates to a water purification and sterilization device, particularly to a surround-type full-area irradiation ultraviolet sterilization unit and device. Background Technology

[0002] Most existing high-flow-rate UV sterilization equipment for water purification adopts a single-sided UV sterilization light source structure, relying mainly on light reflection within the sterilization chamber to compensate for and enhance the UV sterilization dose. Currently used UV sterilization light sources typically have a emission angle of 60° or 120°. Due to the single-sided arrangement, UV light cannot achieve uniform diffusion and full distribution within the sterilization chamber, resulting in significant differences in UV irradiation intensity across different areas. This leads to defects such as excessively high irradiation intensity in some areas and insufficient irradiation dose in others, easily creating sterilization blind spots. Ultimately, this reduces the overall sterilization effect and fails to guarantee the uniformity and stability of sterilization during high-flow-rate media treatment.

[0003] Therefore, there is an urgent need in this field to provide a new type of high-flow-rate water ultraviolet sterilization device to overcome the shortcomings of the current device, such as uneven distribution of ultraviolet light irradiation, easy formation of sterilization blind spots, and unsatisfactory sterilization effect for high-flow-rate media. Summary of the Invention

[0004] The purpose of this invention is to provide a surround-type full-area irradiation ultraviolet sterilization unit and device, which is suitable for stable sterilization treatment under high-flow-rate media conditions, so as to solve the problems of uneven ultraviolet light irradiation distribution, easy formation of sterilization blind zones, and unsatisfactory sterilization effect for high-flow-rate media in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: On one hand, the present invention provides a surround-type global irradiation ultraviolet sterilization unit, comprising: A tubular body, the inner cavity of which is used for the flow of medium, the two ends of which are connected, with one end serving as the medium inlet and the other end serving as the medium outlet; The tubular body contains multiple ultraviolet germicidal light sources, which are evenly distributed around the circumference of the tubular body. Each of the ultraviolet germicidal light sources is detachably installed through the side wall of the tubular body and extends into the tubular body.

[0006] Preferably, a plurality of the ultraviolet sterilization light sources are evenly distributed at equal angles on the same circumference to form a group of surrounding ultraviolet radiation components, and at least one group of the surrounding ultraviolet radiation components is provided on the tubular body along the axial direction.

[0007] Preferably, in each group of the surrounding ultraviolet radiation components, the inherent light emission angle of the ultraviolet germicidal light source is the same as the interval angle between any two adjacent ultraviolet germicidal light sources.

[0008] Preferably, each group of the surrounding ultraviolet radiation components includes three ultraviolet germicidal light sources, and the inherent light emission angle of the ultraviolet germicidal light sources is 120 degrees.

[0009] Preferably, the outer side of the tubular body is provided with a plurality of mounting protrusions spaced apart along its axial direction, and each of the mounting protrusions is provided with a plurality of mounting holes for mounting the ultraviolet sterilization light source evenly distributed circumferentially.

[0010] Preferably, the surround-type global irradiation ultraviolet sterilization unit further includes a PTFE reflector tube fitted inside the tubular body. Each of the ultraviolet sterilization light sources is installed in a detachable manner, passing through the sidewalls of both the tubular body and the PTFE reflector tube. The PTFE reflector tube is used to improve the reflection efficiency of ultraviolet light.

[0011] Preferably, the surround-type full-area irradiation ultraviolet sterilization unit further includes a control board, indicator lights, and a buzzer. Each ultraviolet sterilization light source is electrically connected to the control board, and each ultraviolet sterilization light source has an independent electrical control path. An indicator light and a buzzer are configured on the electrical control path of each ultraviolet sterilization light source, and the indicator light and the buzzer are electrically connected to the control board.

[0012] Preferably, the surround-type global irradiation ultraviolet sterilization unit further includes a flow diffuser installed at the medium inlet of the tubular body; the flow diffuser includes an axially arranged horizontal end and a rotating end, the horizontal end is used to allow the fluid to enter the tubular body uniformly, and the rotating end is used to allow the fluid to flow in a spiral rotation manner.

[0013] On the other hand, the present invention proposes a surround-type global irradiation ultraviolet sterilization device, including a shell and a surround-type global irradiation ultraviolet sterilization unit as described in any one of the above, wherein the shell is encapsulated outside the surround-type global irradiation ultraviolet sterilization unit, and the two ends of the tubular body respectively penetrate the two ends of the shell.

[0014] Preferably, the housing is also provided with an indicator light for determining the working status of the sterilization device and / or an aviation socket for powering the sterilization device.

[0015] The present invention achieves the following technical effects compared to the prior art: The proposed surround-type full-area irradiation ultraviolet sterilization unit has a novel and reasonable structure. The ultraviolet sterilization light source is evenly distributed in a surround shape around the circumference of the tubular main body, which can uniformly radiate ultraviolet light in the circumference of the fluid in the inner cavity, eliminate radiation blind spots, and realize full-area irradiation ultraviolet sterilization. It is suitable for stable sterilization treatment under high flow rate media conditions, and solves the problems of uneven ultraviolet light irradiation distribution, easy formation of sterilization blind spots, and unsatisfactory sterilization effect for high flow rate media in the prior art.

[0016] In some specific embodiments of this invention, the ultraviolet (UV) sterilization light source is uniformly arranged in a 120° circumferential ring around the exterior of the main body, and is paired with a UV sterilization light source using a 120° emission angle. This achieves precise matching between the UV sterilization light source arrangement and the wide-angle emission characteristics of the light source, enabling UV light to achieve all-round, dead-angle-free, and full-coverage irradiation inside the sterilization chamber, effectively improving the problem of uneven irradiance distribution within the chamber. Compared to traditional single-sided or single-surface irradiation structures, this invention can effectively avoid sterilization blind spots, improve UV light utilization, enhance the UV contact effect of the medium, and significantly improve the overall sterilization efficiency and quality under high-flow conditions.

[0017] The surround-type global irradiation ultraviolet sterilization device proposed in this invention includes the above-mentioned surround-type global irradiation ultraviolet sterilization unit and has all the features of the above-mentioned surround-type global irradiation ultraviolet sterilization unit, which will not be repeated here. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the surround-type full-area irradiation ultraviolet sterilization device disclosed in an embodiment of the present invention; Figure 2 This is a partial cross-sectional schematic diagram of the surround-type full-area irradiation ultraviolet sterilization device disclosed in an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the surround-type full-area irradiation ultraviolet sterilization device disclosed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the surrounding distribution of ultraviolet sterilization light sources in the surrounding global irradiation ultraviolet sterilization unit disclosed in an embodiment of the present invention; Figure 5 This is an exploded view of the surround-type full-area irradiation ultraviolet sterilization device disclosed in an embodiment of the present invention.

[0020] In the figure, the attached figures are labeled as follows: 100-Surround full-area irradiation ultraviolet sterilization device; 1- Surround-type full-area irradiation ultraviolet sterilization unit; 11- Tubular body; 12- Ultraviolet sterilization light source; 121- PCB board; 122- Base; 123- Quartz glass; 124- O-ring B; 125- O-ring C; 126- Heat sink; 127- Connecting wire; 13- Mounting convex ring; 14- Flange ring; 15- PTFE reflector tube; 16- Mounting hole; 17- Flow coiler; 2-Control panel; 3-Outer shell; 31-Half-shell one; 32-Half-shell two; 33-Mounting top plate; 4-Equipment indicator lights; 5-Aviation socket; 6-Sealing ring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] One of the objectives of this invention is to provide a surround-type full-area irradiation ultraviolet sterilization unit, which is suitable for stable sterilization treatment under high-flow-rate media conditions, in order to solve the problems of uneven ultraviolet light irradiation distribution, easy formation of sterilization blind zones, and unsatisfactory sterilization effect for high-flow-rate media in the prior art.

[0023] Another object of the present invention is to provide a surround-type global irradiation ultraviolet sterilization device comprising the above-mentioned surround-type global irradiation ultraviolet sterilization unit.

[0024] 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.

[0025] Example 1 like Figure 3 and Figure 4As shown, this embodiment provides a surround-type global irradiation ultraviolet sterilization unit 1, suitable for stable sterilization of high-flow-rate media. The ultraviolet sterilization unit includes a tubular body 11 and multiple ultraviolet sterilization light sources 12 arranged in a surround pattern on the tubular body 11. The inner cavity of the tubular body 11 is used for media flow and is the main sterilization site. Both ends of the tubular body 11 are open, with one end serving as a media inlet communicating with the inner cavity and the other end as a media outlet communicating with the inner cavity. The cross-sectional area of ​​the tubular body 11 is sufficiently large to ensure a sufficiently large flow-through area, enabling high-flow-rate media passage. The sidewall of the tubular body 11 has multiple mounting holes 16 evenly distributed in its circumference. The ultraviolet sterilization light source 12 is installed through and sealed in the mounting holes 16. The emitting end of the ultraviolet sterilization light source 12 faces the inner cavity of the tubular body 11 to radiate ultraviolet light into the tubular body 11. The ultraviolet sterilization light source 12 is evenly distributed in a ring shape in the circumference of the tubular body 11, which can radiate ultraviolet light evenly in the circumference of the fluid in the inner cavity, eliminate radiation blind spots, and realize full-area irradiation ultraviolet sterilization.

[0026] In some feasible implementations, the ultraviolet germicidal light sources 12 can be evenly distributed only along the circumference of the tubular body 11, that is, each tubular body 11 is evenly distributed at equal angles on the same circumference. In this case, the number of ultraviolet germicidal light sources 12 can be three, four, or six, etc. Besides circumferential distribution, considering that the fluid medium needs a sufficiently long residence time within the tubular body 11 to ensure the sterilization effect, the light sources can also be evenly distributed along the axial direction of the tubular body 11. For example, multiple sets of circumferential ultraviolet radiation components can be evenly distributed at intervals along the axial direction of the tubular body 11 (i.e., the flow path of the fluid flow). Each set of circumferential ultraviolet radiation components includes multiple ultraviolet germicidal light sources 12 evenly distributed at equal angles on the same circumference. (Refer to...) Figure 3 and Figure 4 Four sets of surrounding ultraviolet radiation components are evenly distributed along the axial direction of the tubular main body 11. In each set of surrounding ultraviolet radiation components, three ultraviolet germicidal light sources 12 are evenly arranged at a central angle of 120°. Furthermore, the ultraviolet germicidal light sources 12 of any two sets of surrounding ultraviolet radiation components are aligned axially. Figure 4 As shown, the four sets of ultraviolet germicidal light sources 12 of the surrounding ultraviolet radiation components are also evenly distributed in three rows on the outer periphery of the tubular body 11, with each row parallel to the axial direction of the tubular body 11.

[0027] In some feasible embodiments, the tubular body 11 is preferably cylindrical, and the position on its outer surface where the ultraviolet germicidal light source 12 is installed can be flattened along the axial direction of the tubular body 11 so that the ultraviolet germicidal light source 12 is in close contact with the outer surface of the body, ensuring the compactness of the entire ultraviolet sterilization unit and the sealing of the ultraviolet germicidal light source 12 installation location after the light source is installed.

[0028] In some feasible implementations, refer to Figure 2 and Figure 4Each ultraviolet germicidal light source 12 has its inner end extending into the inner cavity by a certain length so that the inner end of the ultraviolet germicidal light source 12 comes into contact with the fluid. The fluid carries away the heat of the ultraviolet germicidal light source 12, which can dissipate heat from the ultraviolet germicidal light source 12, improve its service life and stable operation, and eliminate the thermal damage to the main body caused by the surrounding arrangement of multiple ultraviolet germicidal light sources 12 and the full-area radiation.

[0029] Considering that the ultraviolet germicidal light source 12 has a certain axial length, and to avoid the main body wall being too thin and affecting the installation of the light source, or the main body wall being too thick and causing the equipment to lose its lightweight and miniaturization, this embodiment has a local thickening design on the outside of the tubular main body 11. That is, four mounting protrusions 13 are arranged at intervals along the axial direction on the outside of the tubular main body 11, and four sets of surrounding ultraviolet radiation components are respectively mounted on the four mounting protrusions 13. The outer surface of the four mounting protrusions 13 is axially flattened corresponding to the installation position of the ultraviolet germicidal light source 12. See details. Figure 4 .

[0030] In some feasible implementations, the aforementioned surround-type ultraviolet radiation components adopt a detachable installation form. In practical applications, they can be installed as a single unit or in combination, allowing for flexible combination and use according to the actual medium flow rate specifications and sterilization level requirements. When fewer than four surround-type ultraviolet radiation components are installed, the empty mounting holes 16 on the main body can be sealed using valves, sealing plugs, or other structures.

[0031] In some feasible implementations, the mounting ring 13 and the tubular body 11 can be integrally formed or fitted together. The fixing methods include, but are not limited to, conventional means such as welding and bolt fixing.

[0032] In some feasible implementations, flange rings 14 are provided at both ends of the tubular body 11 to facilitate the connection and installation of other components.

[0033] In some feasible implementations, the tubular body 11 is made of 316 stainless steel.

[0034] In some feasible implementations, it is preferred that the inherent light emission angle of each ultraviolet germicidal light source 12 is 120°. The light emission angle of the light source is precisely coupled and matched with the circumferential arrangement angle of the ultraviolet germicidal light source 12, forming a triangular surrounding layout.

[0035] In some feasible implementations, to enhance the radiation sterilization effect, this embodiment also includes a PTFE (polytetrafluoroethylene) reflector tube coaxially mounted inside the tubular body 11. The PTFE reflector tube 15 is tightly fitted and fixed to the interior of the tubular body 11, with its inner wall serving as the inner wall of the entire body. Mounting holes 16, corresponding one-to-one with the mounting holes 16 in the body, are provided on the wall of the PTFE reflector tube 15, allowing the inner end (i.e., the light source emission end) of the ultraviolet sterilization light source 12 to extend into the PTFE reflector tube 15. The main function of the PTFE reflector tube 15 is to improve the reflection efficiency of ultraviolet light, not only enhancing the radiation intensity of ultraviolet light within the body but also further improving the uniformity of ultraviolet radiation distribution across the entire radiation spectrum. The PTFE reflector tube 15 can be welded or bolted to the tubular body 11.

[0036] In some feasible implementations, a control board 2 is configured in the surround-type full-area irradiation ultraviolet sterilization unit 1. The control board 2 can be fixed to the outer wall of the tubular main body 11 or the outer shell 3 of the sterilization device. Each ultraviolet sterilization light source 12 is electrically connected to the control board 2, and each ultraviolet sterilization light source 12 has an independent electrical control path. The control board 2 is configured such that the electrical control path of each ultraviolet sterilization light source 12 realizes an independent closed loop of switch control + current sampling + temperature detection, which can accurately monitor the status of a single lamp core. In case of failure, it will not affect the operation of other paths, and at the same time, it can facilitate quick location of the faulty module. This control board 2 is compatible with industrial networking and long-distance control, and can be wirelessly debugged on-site via Bluetooth.

[0037] Furthermore, indicator lights and buzzers can be configured on the electrical control path of each ultraviolet sterilization light source 12. Both the indicator lights and buzzers are electrically connected to the control board 2, and are preferably configured on the outer surface of the outer casing 3 of the sterilization device. The combination of 12 indicator lights and buzzers enables visual and audible fault reminders during the water purification and sterilization process, which can significantly reduce maintenance difficulty and facilitate quick replacement and repair of faulty light sources.

[0038] The closed-loop control and fault alert functions of the aforementioned control board 2 can be implemented through existing control programs, which will not be elaborated further.

[0039] In some feasible implementations, refer to Figure 5Each UV sterilization light source 12 consists of a PCB board 121, a base 122, a quartz glass 123, an O-ring, and a heat sink 126. The PCB board 121 houses a UVC LED light source and an NTC thermistor. The NTC thermistor monitors the temperature of the UV sterilization light source 12 and provides a feedback signal. The PCB board 121 is mounted on the heat sink 126, which is made of copper, a material with high thermal conductivity, enabling rapid heat conduction from the UVC LED light source. The heat sink 126 is connected to the base 122 via threads, and the heat sink 126 and base 122 are sealed together by an O-ring C125. A quartz glass 123 is placed on top of the heat sink 126 to encapsulate the PCB board 121, and the heat sink 126 and quartz glass 123 are sealed together by an O-ring B124. A connecting wire 127 is located at the bottom of the base 122. The UV sterilization light source 12 is a mature existing technology, and its specific working principle will not be elaborated here.

[0040] Some feasible implementation methods, such as Figure 2 As shown, a flow diffuser 17 is also installed at the medium inlet of the tubular body 11. (As indicated...) Figure 2 and Figure 5 As shown, the flow diffuser 17 comprises two axially arranged parts: a horizontal flow end and a rotating end. The horizontal flow end is equipped with a turbulence frame, which includes an outer ring and a cross-shaped frame located within the outer ring. The outer ring is sealed to the inner ring of the medium inlet. The cross-shaped frame divides the inner ring into four regions, serving a flow straightening function. When the turbulent fluid outside the sterilization unit passes through, it allows the fluid to enter the main body evenly. The rotating end is located inside the main body, downstream of the horizontal flow end. Multiple turbine blades at different angles are fixed circumferentially on the rotating end, forming a turbine structure. The rotating end allows the fluid to generate rotational kinetic energy after entering the main body, causing the fluid to flow in a spiral rotation. By changing the flow state of the fluid, the time the fluid spends in the inner cavity of the main body can be increased, thereby further improving the sterilization efficiency.

[0041] The proposed invention features a surround-type omnidirectional ultraviolet sterilization unit 1. Ultraviolet sterilization light sources 12 are uniformly arranged in a 120° circumferential ring around the exterior of the main body, and are paired with ultraviolet sterilization light sources 12 using a 120° emission angle. This achieves precise matching between the arrangement of the ultraviolet sterilization light sources 12 and the wide-angle emission characteristics of the light sources, enabling ultraviolet light to achieve all-round, dead-angle-free, and full-coverage irradiation within the sterilization chamber, effectively improving the problem of uneven irradiance distribution within the chamber. Compared to traditional single-sided or single-surface irradiation structures, this invention effectively avoids sterilization blind spots, improves ultraviolet light utilization, enhances the ultraviolet contact effect of the medium, and significantly improves the overall sterilization efficiency and quality under high-flow conditions.

[0042] Example 2 This embodiment provides a surround-type global irradiation ultraviolet sterilization unit 1, which differs from Embodiment 1 in that: except for Figure 3 and Figure 4 As shown in the diagram, the ultraviolet sterilization light source 12 can also be arranged in a spiral distribution around the outer periphery of the tubular body 11, which satisfies both the long-path sterilization of the medium fluid and the full-area radiation of the fluid in the circumferential direction.

[0043] The remaining structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0044] Example 3 like Figure 1 , Figure 2 and Figure 5 As shown, this embodiment proposes a surround-type full-area irradiation ultraviolet sterilization device 100, which includes a surround-type full-area irradiation ultraviolet sterilization unit 1 and a housing 3 as described in Embodiment 1 or 2. The housing 3 is a columnar housing 3 coaxial with the tubular body 11, and it adopts a modular housing design, which facilitates the repair and maintenance of the surround-type full-area irradiation ultraviolet sterilization unit 1.

[0045] like Figure 5 As shown, the outer shell 3 is generally prism-shaped, including two identical half-shells, 31 and 32. Half-shells 31 and 32 are mainly assembled in the installation area of ​​the ultraviolet light source to encapsulate and protect each ultraviolet light source. The two ends of half-shells 31 and 32 can be fixed together by bolts, tenon joints, etc.

[0046] like Figure 1 and Figure 2 As shown, a mounting top plate 33 and a mounting bottom plate are connected between half-shell 1 31 and half-shell 2 32 to achieve a fully enclosed design of the outer shell 3.

[0047] In some feasible implementations, the outer shell 3 is preferably made of aluminum alloy, and its inner wall can be provided with supporting columns. The outer shell 3 is pressed against the outer surface of the mounting protrusion 13 by the supporting columns to ensure the coaxiality and structural stability between the outer shell 3 and the main body. (Reference) Figure 2 and Figure 5 The control board 2 of the surround-type full-area irradiation ultraviolet sterilization unit 1 is integrated and encapsulated inside the housing 3, and is located between the top of the mounting top plate 33 and the top of the mounting protrusion ring 13.

[0048] In some feasible implementations, a master switch may also be configured on the housing 3 of the surround-type global irradiation ultraviolet sterilization device 100 to turn the entire sterilization device on and off.

[0049] Furthermore, an indicator light 4 can be installed on the outside of the outer casing 3 to determine the working status of the sterilization device.

[0050] In some feasible implementations, the housing is also equipped with an aviation socket 5 for supplying power to the sterilization device.

[0051] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0052] 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 surround-type full-area irradiation ultraviolet sterilization unit, characterized in that, include: A tubular body, the inner cavity of which is used for the flow of medium, the two ends of which are connected, with one end serving as the medium inlet and the other end serving as the medium outlet; The tubular body contains multiple ultraviolet germicidal light sources, which are evenly distributed around the circumference of the tubular body. Each of the ultraviolet germicidal light sources is detachably installed through the side wall of the tubular body and extends into the tubular body.

2. The surround-type full-area irradiation ultraviolet sterilization unit according to claim 1, characterized in that, Multiple ultraviolet germicidal light sources are evenly distributed at equal angles on the same circumference to form a group of surrounding ultraviolet radiation components, and at least one group of the surrounding ultraviolet radiation components is arranged along the axial direction on the tubular body.

3. The surround-type full-area irradiation ultraviolet sterilization unit according to claim 2, characterized in that, In each group of the surrounding ultraviolet radiation components, the inherent emission angle of the ultraviolet germicidal light source is the same as the interval angle between any two adjacent ultraviolet germicidal light sources.

4. The surround-type global irradiation ultraviolet sterilization unit according to claim 3, characterized in that, Each of the aforementioned surround-type ultraviolet radiation components includes three ultraviolet germicidal light sources, and the inherent light emission angle of each ultraviolet germicidal light source is 120 degrees.

5. The surround-type full-area irradiation ultraviolet sterilization unit according to any one of claims 2 to 4, characterized in that, The tubular body has multiple mounting protrusions spaced along its axial direction on its exterior, and each mounting protrusion has multiple mounting holes evenly opened in the circumferential direction for mounting the ultraviolet sterilization light source.

6. The surround-type full-area irradiation ultraviolet sterilization unit according to any one of claims 2 to 4, characterized in that, It also includes a PTFE reflector tube fitted inside the tubular body. Each of the ultraviolet germicidal light sources is installed in a detachable manner, passing through the sidewalls of both the tubular body and the PTFE reflector tube. The PTFE reflector tube is used to improve the reflection efficiency of ultraviolet light.

7. The surround-type global irradiation ultraviolet sterilization unit according to any one of claims 1 to 4, characterized in that, It also includes a control board, indicator lights, and a buzzer. Each of the ultraviolet germicidal light sources is electrically connected to the control board, and each ultraviolet germicidal light source has an independent electrical control path. An indicator light and a buzzer are configured on the electrical control path of each ultraviolet germicidal light source, and the indicator light and the buzzer are electrically connected to the control board.

8. The surround-type global irradiation ultraviolet sterilization unit according to any one of claims 1 to 4, characterized in that, It also includes a flow diffuser installed at the medium inlet of the tubular body; the flow diffuser includes an axially arranged horizontal end and a rotating end, the horizontal end is used to allow the fluid to enter the tubular body uniformly, and the rotating end is used to allow the fluid to flow in a spiral rotation manner.

9. A surround-type full-area irradiation ultraviolet sterilization device, characterized in that, The device includes a housing and a surround-type global irradiation ultraviolet sterilization unit as described in any one of claims 1 to 8, wherein the housing is encapsulated outside the surround-type global irradiation ultraviolet sterilization unit, and the two ends of the tubular body respectively penetrate the two ends of the housing.

10. The surround-type full-area irradiation ultraviolet sterilization device according to claim 9, characterized in that, The housing is also equipped with an indicator light for determining the working status of the sterilization device and / or an aviation socket for powering the sterilization device.

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