A method of disinfection of an ultraviolet disinfection device and related apparatus

Abstract

The application discloses a kind of ultraviolet disinfection device disinfection method and related device, belong to ultraviolet disinfection device technical field, the method includes: obtaining the flow rate and light intensity of different positions in disinfection device cavity;Because distance is certain, according to the flow rate and the light intensity obtains the water dose of each position;According to the water dose, the corresponding position of ultraviolet radiation dose is obtained;According to the ultraviolet radiation dose, the ultraviolet lamp tube of corresponding power is set in different positions in disinfection device cavity;By obtaining the light intensity and water flow speed information of different positions in disinfection device cavity, and according to the information, the water dose and ultraviolet radiation dose of corresponding position are calculated.By adjusting the power of ultraviolet lamp tube in different positions, the uniform consistency of ultraviolet dose in the entire disinfection device cavity can be realized, so as to improve the disinfection effect and save energy consumption.

Description

Technical Field

[0001] This invention relates to the field of ultraviolet sterilizer technology, and in particular to an ultraviolet sterilizer method and related apparatus. Background Technology

[0002] Ultraviolet (UV) sterilizers are widely used in various water treatment processes. For a UV sterilizer to achieve excellent sterilization results, it should possess: a highly efficient radiation source, uniform radiation distribution, and sufficient radiation contact. According to national drinking water standards, the radiation dose of water passing through a UV sterilizer must be higher than 40 mJ / cm². 2 To achieve sterilization effects with a bacterial and viral inactivation rate exceeding 99.99%, ultraviolet (UV) sterilizers need to meet three key conditions: a high-efficiency radiation source, uniform radiation distribution, and sufficient radiation contact. However, in practical applications, the performance of UV sterilizers is often affected by various factors, such as the non-uniformity of water flow velocity within the chamber and differences in light intensity distribution. These factors may cause the same dose of UV radiation to affect the sterilization effect at different locations within the sterilizer chamber.

[0003] To address this issue, existing methods for optimizing the performance of ultraviolet (UV) sterilizers typically focus on improving the efficiency of the radiation source and the uniform distribution of light intensity. However, these methods often overlook the impact of water flow velocity on disinfection effectiveness. In fact, water flow velocity affects not only the contact time between UV light and water but also the penetration depth of UV light and the overall disinfection effect.

[0004] Based on the above problems, this application proposes a method and related device for ultraviolet sterilizer disinfection, which achieves uniform and consistent ultraviolet dose throughout the sterilizer cavity, thereby improving the disinfection effect and saving energy. Summary of the Invention

[0005] The purpose of this invention is to provide a method and related apparatus for ultraviolet (UV) sterilization. By acquiring light intensity and water flow velocity information at different locations within the sterilizer cavity, and calculating the corresponding water output dose and UV irradiation dose, the UV dose throughout the sterilizer cavity can be uniformly distributed by adjusting the power of the UV lamps at different locations. This improves the sterilization effect and saves energy.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] In a first aspect, this application provides a method for disinfection using an ultraviolet sterilizer, the method comprising:

[0008] The flow rate and light intensity at different locations within the sterilizer cavity are obtained; the effluent dosage at each location is determined based on the flow rate and light intensity.

[0009] The ultraviolet radiation dose at the corresponding location is obtained based on the water output dose;

[0010] According to the ultraviolet radiation dose, ultraviolet lamps with corresponding power are installed at different positions in the sterilizer cavity.

[0011] Preferably, the ultraviolet sterilizer performance disinfection method includes the sterilizer cavity comprising one or more virtual sterilizer cavity cross-sections; obtaining the flow velocity and light intensity at different locations within the sterilizer cavity; and obtaining the effluent dosage at each location based on the flow velocity and light intensity; comprising:

[0012] Acquire light intensity and flow velocity at different locations on the cross-section of each sterilizer cavity;

[0013] The light intensity and flow velocity at the same location are coupled, and the effluent dose at the corresponding location is obtained based on the coupling result.

[0014] Optionally, the ultraviolet sterilizer sterilization method, wherein obtaining the light intensity and flow velocity at different positions on the cross-section of each sterilizer cavity includes:

[0015] Divide the cross-section of each sterilizer cavity into multiple squares of the same size;

[0016] Obtain the light intensity and flow rate values ​​within each block.

[0017] Preferably, the ultraviolet sterilizer sterilization method, wherein obtaining the light intensity and flow velocity at different positions on the cross-section of each sterilizer cavity includes:

[0018] Divide the cross-section of each sterilizer cavity into multiple squares of the same size;

[0019] Obtain the flow velocity within each square of each cross section, and the light intensity value within each square of any cross section;

[0020] The flow velocity value of each block is obtained based on the flow velocity of the blocks at the same position in the cross-section of each sterilizer cavity.

[0021] Preferably, the ultraviolet sterilizer disinfection method, wherein the light intensity and flow velocity at the same location are coupled, and the effluent dosage at the corresponding location is obtained based on the coupling result, includes:

[0022] Couple the light intensity and flow rate of the same square; obtain the product of the light intensity value and flow rate value of each square;

[0023] The corresponding water output dose for each block is determined by multiplying the light intensity value and the flow rate value of each block.

[0024] Preferably, in the ultraviolet sterilizer sterilization method, the cross-sections of the multiple sterilizer cavities are arranged at equal intervals.

[0025] Preferably, in the ultraviolet sterilizer sterilization method, obtaining the flow velocity value of each block based on the flow velocity of the blocks at the same position in the cross-section of each sterilizer cavity includes:

[0026] The flow velocities of blocks at the same position in the cross-section of each sterilizer cavity are weighted and averaged to obtain the flow velocity value of each block.

[0027] The flow rate adjustment range is determined based on the variance of the flow rate of the blocks at the same position in the cross-section of each sterilizer cavity.

[0028] Preferably, the ultraviolet sterilizer sterilization method, wherein the flow velocity of blocks at the same position in the cross-section of each sterilizer cavity is weighted and averaged to obtain the flow velocity value of each block, includes:

[0029] Obtain the weights corresponding to the flow velocity across the cross-section of the sterilizer cavity;

[0030] The weights satisfy the following conditions:

[0031] w j =α+(1+G j )×(1+E j )×β

[0032]

[0033]

[0034] Among them, w j G represents the weight of the cross-section of the j-th sterilizer cavity; j D is the distance coefficient; n is the number of cross sections; j D is the distance between the cross-section of the j-th sterilizer cavity and the geometric center of the sterilizer cavity; jmax D represents the distance between the farthest cross-section of the sterilizer cavity from its geometric center and the geometric center of the sterilizer cavity; jmin V is the distance between the nearest cross-section of the sterilizer cavity to its geometric center and the geometric center of the sterilizer cavity; α and β are adjustment coefficients, 0 < α < 1, 0 < β < 1; j V represents the flow velocity of a block at a certain location through the cross-section of the j-th sterilizer cavity; jmin The minimum flow velocity is obtained by passing through the cross-section of each sterilizer cavity at this location; V jmax The maximum flow velocity is obtained by passing through the cross-section of each sterilizer cavity at this location; E j This is the result of normalizing the flow velocity obtained by the block at this location through the cross-section of the j-th sterilizer cavity.

[0035] Preferably, the ultraviolet sterilizer disinfection method, wherein obtaining the ultraviolet irradiation dose at the corresponding location based on the effluent dose, includes:

[0036] The ultraviolet radiation dose is obtained through the following method:

[0037]

[0038] Among them, L i S represents the ultraviolet radiation dose at a specific location. i The effluent dosage at this location; S y For standard effluent dosage, F y This is the standard ultraviolet radiation dose.

[0039] On the other hand, this application also provides an ultraviolet sterilizer disinfection device, the device including a memory and at least one processor, the memory storing a computer program, the at least one processor being configured to execute the computer program to implement the steps of the ultraviolet sterilizer disinfection method of any one of the claims of this application.

[0040] Compared with existing technologies, the beneficial effects of this invention include at least the following: by comprehensively considering the effects of flow rate and light intensity, the ultraviolet irradiation dose can be precisely controlled, maximizing the utilization of ultraviolet photons and ensuring sufficient contact between water flow and ultraviolet light for efficient sterilization; simultaneously, it ensures uniform ultraviolet dose throughout the reaction chamber, greatly improving disinfection efficiency and shortening disinfection time. Because the ultraviolet irradiation dose at each location can be precisely controlled, this method avoids unnecessary energy waste. Compared with traditional disinfection methods, this method can reduce energy consumption while ensuring disinfection effectiveness, achieving the goal of energy saving and consumption reduction. Through scientific calculation and precise control, this method reduces human intervention and errors, improving the reliability and stability of the disinfection process. This helps ensure the long-term stable operation of the sterilizer and the stability of the effluent water quality. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of a UV sterilizer disinfection method according to an embodiment of the present invention;

[0042] Figure 2 This is a simulation diagram of the light intensity distribution across the cross-section of the sterilizer cavity according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the simulated flow velocity distribution across the cross-section of the sterilizer cavity according to an embodiment of the present invention. Detailed Implementation

[0044] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0045] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0046] Before proceeding with this embodiment, we will first introduce ultraviolet light and some basic software, as follows:

[0047] Ultraviolet light refers to electromagnetic waves with wavelengths between 100 and 400 nm. Ultraviolet light is invisible. Depending on the wavelength, it can be further divided into ultraviolet A (315-400 nm), ultraviolet B (280-315 nm), ultraviolet C (200-280 nm), and ultraviolet D (100-200 nm). Water disinfection uses ultraviolet C in the wavelength range. According to research [4], biological DNA has the highest absorption rate at a wavelength of about 254 nm. In this embodiment, we take a UV sterilizer with a 254 nm UVC lamp tube as an example for analysis.

[0048] Tracepro is a widely used ray simulation software for lighting systems, optical analysis, radiometric analysis, and photometric analysis. It was the first optical software based on the ACIS solid modeling kernel. It was also the first optical simulation software to combine a realistic solid model, powerful optical analysis capabilities, and strong data conversion abilities. Tracepro software was used to simulate the light intensity distribution within the cavity of an ultraviolet sterilizer, thus obtaining the light intensity distribution.

[0049] Computational fluid dynamics (CFD) uses computer simulations to obtain information about a fluid under specific conditions, enabling "computational experiments" to be performed using computers instead of experimental devices. It provides engineers with an operational platform for simulating actual working conditions. Belonging to multiphysics system analysis, it aims to simulate fluid flow characteristics and thermodynamic properties using numerical models. This study uses ANSYS FLUENT software to simulate the fluid within the cavity of an ultraviolet sterilizer, aiming to obtain the velocity distribution by analyzing the velocity distribution within the cavity.

[0050] Reference Figure 1 Some embodiments of this application propose a method for disinfection using an ultraviolet sterilizer, the method comprising:

[0051] The flow rate and light intensity at different locations within the sterilizer cavity are obtained; the effluent dosage at each location is determined based on the flow rate and light intensity.

[0052] The ultraviolet radiation dose at the corresponding location is obtained based on the water output dose;

[0053] According to the ultraviolet radiation dose, ultraviolet lamps with corresponding power are installed at different positions in the sterilizer cavity.

[0054] The working principle of the above technical solution is as follows: acquiring flow velocity and light intensity data at various locations within the sterilizer cavity. This data can be obtained using sensors or simulation software.

[0055] Based on the acquired flow velocity and light intensity data, the effluent dose at each location is calculated using a specific algorithm or model. The effluent dose is a comprehensive indicator that reflects the contact time and intensity between the water flow and ultraviolet radiation.

[0056] There is a certain relationship between the effluent water dose and the ultraviolet (UV) radiation dose. By analyzing and processing the effluent water dose data, the required UV radiation dose for each location can be determined. These doses are the basis for setting the power of the UV lamps.

[0057] Finally, based on the calculated ultraviolet radiation dose, ultraviolet lamps of corresponding power are installed at different locations within the sterilizer cavity. This ensures that the entire sterilizer cavity receives uniform and sufficient ultraviolet irradiation, thereby achieving a highly efficient sterilization effect.

[0058] Common U-shaped UV sterilizers, as revealed by CFD fluid simulations, exhibit jetting at the bottom of the cavity. This is addressed by employing a different approach: a high-power UV lamp is used at the bottom where the flow velocity is high, while a low-power UV lamp is used at the top where the flow velocity is slow. This allows for high-intensity UV irradiation in the high-flow-velocity region and low-intensity UV light in the low-flow-velocity region.

[0059] The effects of the above technical solution are as follows: By comprehensively considering the influence of flow rate and light intensity, the ultraviolet irradiation dose can be precisely controlled, maximizing the utilization of ultraviolet photons and ensuring sufficient contact between water flow and ultraviolet light for efficient sterilization. Simultaneously, it ensures uniform ultraviolet dose throughout the reaction chamber, significantly improving disinfection efficiency and shortening disinfection time. Because the ultraviolet irradiation dose at each location can be precisely controlled, this method avoids unnecessary energy waste. Compared with traditional disinfection methods, this method can reduce energy consumption while ensuring disinfection effectiveness, achieving the goal of energy saving and consumption reduction. Through scientific calculation and precise control, this method reduces human intervention and errors, improving the reliability and stability of the disinfection process. This helps ensure the long-term stable operation of the sterilizer and the stability of the effluent water quality. The implementation of this method can leverage modern sensing technology and automated control systems to achieve automation and intelligence in the disinfection process. This not only improves work efficiency but also reduces operational difficulty and personnel costs.

[0060] In summary, the ultraviolet sterilizer disinfection method proposed in the embodiments of this application has significant advantages and effects, including improved disinfection efficiency, guaranteed uniform disinfection effect, reduced energy consumption, enhanced reliability, and improved intelligence level of the sterilizer. These benefits and effects make this method promising for applications in drinking water treatment, medical and health care, food processing, and other fields.

[0061] This application includes embodiments of an ultraviolet sterilizer performance sterilization method, wherein the sterilizer cavity includes one or more virtual sterilizer cavity cross-sections; the method involves acquiring the flow velocity and light intensity at different locations within the sterilizer cavity; and obtaining the effluent dosage at each location based on the flow velocity and light intensity; including:

[0062] Acquire light intensity and flow velocity at different locations on the cross-section of each sterilizer cavity;

[0063] The light intensity and flow velocity at the same location are coupled, and the effluent dose at the corresponding location is obtained based on the coupling result.

[0064] The working principle of the above technical solution is as follows: First, one or more virtual cross-sections of the sterilizer cavity are set within the sterilizer chamber. These cross-sections can be set at equal intervals to ensure comprehensive analysis of the entire sterilizer cavity. On each virtual cross-section, light intensity and flow velocity data at different locations are acquired using sensors or simulation software. These data reflect the light intensity and water flow velocity in various areas within the sterilizer cavity. The light intensity and flow velocity data at the same location are coupled. The coupling process involves multiplying the light intensity and flow velocity values ​​to obtain a comprehensive index of the effluent dose at that location. This comprehensive index reflects the combined effect of water flow and ultraviolet radiation at that location. Based on the coupling results, the effluent dose at each location is analyzed. The magnitude of the effluent dose directly determines the ultraviolet radiation dose received by the water flow at that location, thus affecting the disinfection effect. Optimization settings: Based on the effluent dose analysis results, the power settings of the ultraviolet lamps at different locations within the sterilizer cavity are adjusted. For areas with a higher effluent dose, the power of the ultraviolet lamps can be appropriately increased to ensure sufficient ultraviolet radiation; while for areas with a lower effluent dose, the power can be appropriately reduced to save energy.

[0065] This method allows the sterilizer to optimize energy consumption while ensuring sterilization effectiveness. Furthermore, by using a virtual cross-section for analysis, a more comprehensive and accurate understanding of the light intensity and flow velocity distribution within the sterilizer cavity can be obtained, thereby further improving the uniformity and reliability of sterilization.

[0066] The effects of the above technical solution are as follows: By acquiring and analyzing light intensity and flow velocity data at different locations on each virtual cross-section, the disinfection process can be controlled more precisely. This ensures that the sterilizer can provide uniform ultraviolet irradiation in all areas, thereby improving the disinfection effect. Because the effluent dosage can be accurately obtained and the power setting of the ultraviolet lamps can be adjusted according to the effluent dosage, this method can improve disinfection efficiency. The contact between the water flow and ultraviolet light is more sufficient, reducing unnecessary energy waste while ensuring the disinfection effect. Through precise analysis of the effluent dosage, the power of the ultraviolet lamps can be adjusted according to actual needs, avoiding unnecessary energy consumption. This helps reduce the operating cost of the sterilizer and also helps achieve the goal of energy conservation and environmental protection. Using the virtual cross-section method, the distribution of light intensity and flow velocity within the sterilizer cavity can be comprehensively analyzed. This helps to identify potential disinfection dead zones and optimize the disinfection effect by adjusting the power of the ultraviolet lamps. Therefore, this method enhances the uniformity and reliability of disinfection and improves the stability of the effluent water quality. The implementation of this method can leverage modern sensing technology and automated control systems to achieve automation and intelligence in the disinfection process. This not only improves work efficiency but also reduces operational difficulty and personnel costs. At the same time, intelligent sterilizers are easier to monitor and maintain remotely.

[0067] In summary, using a virtual sterilizer cavity cross-section combined with the coupling of light intensity and flow velocity to determine the effluent dosage brings numerous benefits and effects to ultraviolet sterilizers, including precise control, efficient sterilization, reduced energy consumption, enhanced uniformity and reliability, and improved intelligence. These benefits and effects make this method promising for applications in drinking water treatment, medical and health care, and food processing.

[0068] Some embodiments of this application, a UV sterilizer sterilization method, include obtaining the light intensity and flow velocity at different positions on the cross-section of each sterilizer cavity; including:

[0069] Divide the cross-section of each sterilizer cavity into multiple squares;

[0070] Obtain the light intensity and flow rate values ​​within each block;

[0071] Couple the light intensity and flow rate of the same square; obtain the product of the light intensity value and flow rate value of each square;

[0072] The corresponding water output dose for each block is determined by multiplying the light intensity value and the flow rate value of each block.

[0073] In this embodiment, simulation software is used to simulate the light intensity and flow rate values ​​within each square in the cross-section of the sterilizer cavity. The size of the small square depends on whether the color intensity of the square meets the requirement of recognizing a single light intensity and flow rate value. The smallest square among the squares that can recognize a single light intensity value and the squares that can recognize a single flow rate value is selected as the unit square division standard. Then, the numerical value corresponding to the color depth of the small square is defined, so that the light intensity or flow rate distribution map in the cross-section can be intuitively simulated. The light intensity map and the flow rate map are fused together to obtain the fused image, which is the effluent dosage distribution map.

[0074] The working principle of the above technical solution is as follows:

[0075] A simulation diagram of the light intensity distribution across the cross-section of the sterilizer cavity, referring to... Figure 2 ;

[0076] A schematic diagram of the simulated flow velocity distribution across the cross-section of the sterilizer cavity, referencing... Figure 3 ;

[0077] The basic principle is that the product of light intensity and time is the ultraviolet radiation dose. Since the distance is constant, the product of light intensity and velocity can determine the water radiation dose. Two images are superimposed using a computer learning algorithm. That is, the cross-sectional image is divided into small squares, and the color depth of each square is defined. When the images are superimposed, the product of the values ​​corresponding to the squares at the same location is obtained, thus producing an image that reflects the water radiation dose. Specifically, the cavity flow velocity image is taken at 5-millimeter intervals, while the cavity cross-sectional light intensity image remains constant. Therefore, multiple flow velocity-light intensity product images can be generated. The values ​​within the small squares at the same location in these images are processed, and the average or weighted average is taken to obtain the water radiation dose for that square. The variance of the values ​​within the small squares at the same location is used to determine the error range; ultimately, this achieves a distribution that reflects the ultraviolet radiation dose.

[0078] By meticulously processing the light intensity and flow velocity data of the sterilizer cavity cross-section, accurate calculation of the effluent dosage and intuitive display of its distribution map were achieved. First, the cross-section of each sterilizer cavity was meticulously divided into multiple small squares. The size of these squares was not arbitrary but determined based on the uniqueness of light intensity and flow velocity identification. The aim was to ensure that the light intensity and flow velocity values ​​within each square were representative and easily identifiable. Simulation software was used to simulate the light intensity and flow velocity values ​​of each small square within the sterilizer cavity cross-section. The simulation software could simulate the lighting conditions and water flow in a real environment, thus providing accurate data support. A color depth was defined for each small square, corresponding to a specific value. In this way, the values ​​of light intensity and flow velocity could be intuitively represented by the depth of color. The darker the color, the higher the corresponding light intensity or flow velocity value. The light intensity distribution map and the flow velocity distribution map were then fused to form a single image, namely the effluent dosage distribution map. This image intuitively displays the light intensity, flow velocity, and the calculated effluent dosage at different locations on the sterilizer cavity cross-section. Analyzing the water dose distribution diagram provides a clear understanding of the water dose distribution in different areas of the sterilizer chamber. This is crucial for optimizing the power settings of the ultraviolet lamps and improving sterilization efficiency and uniformity. Based on the water dose distribution diagram, the sterilizer can be optimized and adjusted accordingly. For example, increasing the power of the ultraviolet lamps in areas with lower water doses can improve the sterilization effect; while appropriately reducing the power in areas with higher water doses can save energy.

[0079] In summary, the ultraviolet sterilizer disinfection method in this embodiment achieves precise calculation of the effluent dosage and intuitive display of the distribution map by finely processing light intensity and flow velocity data and combining simulation software and color coding technology. This provides strong support for optimizing the performance of the sterilizer and improving the disinfection effect.

[0080] Some embodiments of the ultraviolet sterilizer sterilization method of this application include obtaining the light intensity and flow velocity at different positions of the cross-section of each sterilizer cavity; including:

[0081] The cross-section of each sterilizer cavity is divided into multiple squares of the same size. In this embodiment, simulation software is used to simulate the light intensity and flow rate values ​​within each square in the cross-section of the sterilizer cavity. The minute size of the small square depends on whether the color intensity of the square is sufficient to identify a single light intensity and flow rate value. The smallest square among those capable of identifying a single light intensity value and a single flow rate value is selected as the unit square division standard. Then, the numerical value corresponding to the color depth of the small square is defined, thereby visually simulating the light intensity or flow rate distribution map in the cross-section.

[0082] Obtain the flow velocity within each square of each cross section, and the light intensity value within each square of any cross section;

[0083] The flow velocity value of each block is obtained by taking the average of the flow velocities of blocks at the same position in the cross-section of each sterilizer cavity, or by weighted averaging, etc.

[0084] Couple the light intensity and flow velocity at the same location; and obtain the corresponding effluent dose based on the coupling result; including:

[0085] Couple the light intensity and flow rate of the same square; obtain the product of the light intensity value and flow rate value of each square;

[0086] The corresponding water output dose for each block is determined by multiplying the light intensity value and the flow rate value of each block.

[0087] In some embodiments, the cross-sections of the plurality of sterilizer cavities are equally spaced; the spacing is 5 to 10 mm.

[0088] The working principle of the above technical solution is as follows: the cross-section of each sterilizer cavity is uniformly divided into multiple squares of the same size.

[0089] At each cross-section, the flow velocity value within each square is simulated and recorded. Simultaneously, at any cross-section, the light intensity value within each square is simulated and recorded. Since the squares on each sterilizer chamber cross-section are of the same size, the flow velocity values ​​of squares at the same location can be directly compared and summarized. Summarizing and analyzing the effluent dose of all squares allows us to understand the effluent dose situation in each area of ​​the sterilizer chamber; this ensures the accuracy of the flow velocity data. The light intensity and flow velocity at the same location (i.e., the same square) are coupled. This coupling process is achieved by multiplying the light intensity value by the flow velocity value. This product represents the combined effect of the water flow and ultraviolet radiation at that location. Based on the product of the light intensity value and the flow velocity value for each square, the effluent dose corresponding to that square is determined. The effluent dose is a comprehensive indicator that reflects the contact time and intensity of the water flow and ultraviolet radiation under specific light and flow velocity conditions.

[0090] The effects of the above technical solution are as follows: By dividing the cross-section of the sterilizer cavity into multiple squares of the same size and obtaining the light intensity and flow velocity values ​​within each square, the distribution of light intensity and flow velocity can be simulated more accurately. This ensures that the interaction between ultraviolet light and water flow reaches its optimal state, improving sterilization efficiency and guaranteeing the uniformity of sterilization. When multiple sterilizer cavity cross-sections are set at equal intervals, it ensures that the data differences between each cross-section are uniform. This helps to more accurately simulate the distribution of water flow and light intensity during the simulation process. Due to the fixed spacing, the simulation software can more accurately calculate the light intensity and flow velocity values ​​within each square, thereby improving the processing accuracy of the simulation. Setting multiple sterilizer cavity cross-sections at equal intervals simplifies the simulation process. Since the distance between each cross-section is fixed, the simulation software can process data more quickly, reducing computation time. In addition, the equal spacing setting also helps to optimize the efficiency of the algorithm, further accelerating the simulation speed. When multiple sterilizer cavity cross-sections are set at equal intervals, the obtained data is more regular and comparable. This helps simplify the data analysis process and improve data processing efficiency. When measuring flow velocity, various factors may influence the data, leading to random errors or outliers. By calculating the mean or weighted average (not specifically limited here), the impact of these errors and outliers can be reduced, making the flow velocity data more accurate and reliable. Compared to data from a single cross-sectional area, obtaining the flow velocity values ​​for each block based on the flow velocity at the same location across the cross-section of each sterilizer cavity further reduces the impact of these errors and outliers, making the flow velocity data more accurate and reliable.

[0091] In some embodiments, a method for disinfection using an ultraviolet sterilizer, wherein obtaining the flow velocity value of each block based on the flow velocity of blocks at the same position across the cross-section of each sterilizer cavity, includes:

[0092] The flow velocities of blocks at the same position in the cross-section of each sterilizer cavity are weighted and averaged to obtain the flow velocity value of each block.

[0093] The flow rate adjustment range is determined based on the variance of the flow rate of the blocks at the same position in the cross-section of each sterilizer cavity.

[0094] The working principle and effect of the above technical solution are as follows: The flow velocities of blocks at the same location across the cross-section of each sterilizer cavity are weighted and averaged. This means that the flow velocity of each block is not only considered but also assigned a weight based on its importance to the overall performance. This allows for a more accurate reflection of the true flow velocity within the entire sterilizer cavity, especially when the flow velocity in certain areas has a greater impact on the sterilization effect. Variance is a statistic that measures the dispersion of data distribution. In this sterilization method, calculating the variance of the flow velocity of blocks at the same location across the cross-section of each sterilizer cavity is to understand the fluctuations between these flow velocity values. A larger variance indicates a greater difference in flow velocity between blocks at the same location; a smaller variance indicates a more uniform flow velocity distribution. By calculating the variance, the uniformity of the flow velocity distribution within the sterilizer cavity can be assessed. If the variance is large, it means there are significant differences in flow velocity between different areas, which may affect the sterilization effect. Therefore, based on the variance value, the adjustment range of the flow velocity can be determined to reduce this difference and optimize the sterilizer's performance. The adjustment range of the flow velocity can be determined based on the calculated flow velocity variance. A large variance indicates uneven flow velocity distribution, which may require adjustments to optimize disinfection. The adjustment range can be determined based on the specific variance value and the actual condition of the sterilizer. Methods for adjusting flow velocity include adjusting the pump speed, changing the piping layout, or adjusting valves. These adjustments optimize the flow velocity distribution within the sterilizer chamber, ensuring more uniform water flow and thus improving disinfection efficiency. Precise control of flow velocity can reduce potential risks and malfunctions. For example, an excessively high flow velocity may result in insufficient water residence time within the sterilizer, affecting disinfection effectiveness; conversely, an excessively low flow velocity may lead to excessively long residence time, increasing the risk of microbial growth. Weighted averaging and variance analysis can help identify and resolve these issues promptly, enhancing system reliability.

[0095] This application includes several embodiments of an ultraviolet sterilizer disinfection method, wherein the flow velocity of blocks at the same position in the cross-section of each sterilizer cavity is weighted and averaged to obtain the flow velocity value of each block; including:

[0096] Obtain the weights corresponding to the flow velocity across the cross-section of the sterilizer cavity;

[0097] The weights satisfy the following conditions:

[0098] w j =α+(1+G j )×(1+E j)×β

[0099]

[0100] Among them, w j G represents the weight of the cross-section of the j-th sterilizer cavity; j D is the distance coefficient; n is the number of cross sections; j D is the distance between the cross-section of the j-th sterilizer cavity and the geometric center of the sterilizer cavity; jmax D represents the distance between the farthest cross-section of the sterilizer cavity from its geometric center and the geometric center of the sterilizer cavity; jmin V is the distance between the nearest cross-section of the sterilizer cavity to its geometric center and the geometric center of the sterilizer cavity; α and β are adjustment coefficients, 0 < α < 1, 0 < β < 1; j V represents the flow velocity of a block at a certain location through the cross-section of the j-th sterilizer cavity; jmin The minimum flow velocity is obtained by passing through the cross-section of each sterilizer cavity at this location; V jmax The maximum flow velocity is obtained by passing through the cross-section of each sterilizer cavity at this location; E j This is the result of normalizing the flow velocity obtained by the block at this location through the cross-section of the j-th sterilizer cavity.

[0101] The working principle of the above technical solution is as follows: First, a distance coefficient is calculated based on the distance between the cross-section of the ultraviolet sterilizer cavity and its geometric center. This distance coefficient represents the distance between the block at each cross-section and the geometric center of the sterilizer cavity; the greater the distance, the smaller the distance coefficient. Then, the flow velocity obtained by the block at that location through each cross-section of the sterilizer cavity is normalized to obtain the normalized flow velocity result.

[0102] Next, based on the set adjustment coefficients α and β, as well as the distance coefficient and the normalized flow rate, the weight of each sterilizer cavity cross section is calculated; the formula takes into account the influence of distance and flow rate factors on the weight.

[0103] The above technical solution achieves the following results: Through weighted averaging, we can obtain a more accurate flow rate value, which represents the average flow rate throughout the entire sterilizer chamber. The weighting coefficients consider the importance and influence of different areas. The central area of ​​the sterilizer is of higher importance, as the flow rate of the squares in the central area is crucial to the sterilization effect. Therefore, these squares may be assigned higher weights during weighted averaging; areas with high flow rates are assigned even higher weights. By comprehensively considering distance and flow rate factors, the uniformity of sterilization and the overall accuracy of the assessment are improved, the system's flexibility and adaptability are enhanced, and the treatment of critical areas is strengthened.

[0104] The ultraviolet sterilizer disinfection method of this application, wherein obtaining the ultraviolet irradiation dose at the corresponding location based on the effluent dose, includes:

[0105] The ultraviolet radiation dose is obtained through the following method:

[0106]

[0107] Among them, L i S represents the ultraviolet radiation dose at a specific location. i The effluent dosage at this location; S y For standard effluent dosage, F y This is the standard ultraviolet radiation dose.

[0108] In other embodiments, the ultraviolet sterilizer disinfection method, wherein obtaining the ultraviolet irradiation dose at the location based on the effluent dose, includes:

[0109] The ultraviolet radiation dose is:

[0110]

[0111] Among them, L i S represents the ultraviolet radiation dose at a specific location. i The effluent dosage at this location; S y For standard effluent dosage, F y Z is the standard ultraviolet radiation dose. a The parameters of the water flowing through this disinfection chamber; Z y is the preset water quality parameter; f() is the functional relationship between the water quality parameter and the ultraviolet radiation dose.

[0112] The working principle of the above technical solution is as follows:

[0113] First, the outflow dose at each location of the virtual cross-section is obtained; the outflow dose is determined by the product of the light intensity value and the flow velocity value.

[0114] A preset or standard water output dose is used as a reference. This standard water output dose represents the ideal or standard water output dose and can be the average of multiple water output doses.

[0115] Set a preset or standard ultraviolet irradiation dose, which is the ultraviolet dose required to achieve the ideal disinfection effect based on the preset or standard effluent dose.

[0116] Then, the ultraviolet radiation dose corresponding to each location of the virtual cross-section is calculated according to the following formula:

[0117]

[0118] The formula works by comparing the effluent dose at each outlet with the standard effluent dose, and then adjusting the standard ultraviolet irradiation dose according to the ratio to obtain the ultraviolet irradiation dose at that location. This ensures that each location in the virtual cross-section receives a uniform ultraviolet dose, thereby maintaining a stable disinfection effect.

[0119] In other embodiments, the difference between the water quality parameters flowing through the disinfection chamber and preset water quality parameters is also considered. Water quality parameters may include turbidity, temperature, pH value, etc., all of which can affect the disinfection effect of ultraviolet light. Therefore, a functional relationship f() is introduced, which describes the relationship between water quality parameters and ultraviolet radiation dose.

[0120] In this case, the formula for calculating ultraviolet radiation dose becomes:

[0121]

[0122] This formula considers not only differences in the effluent dosage but also variations in water quality parameters. Based on the difference between actual and preset water quality parameters, the ultraviolet irradiation dosage is adjusted using the function f() to ensure ideal disinfection results under any water quality conditions.

[0123] The above technical solution achieves the following results: the effluent dose at each location within the virtual cross-section is accurately measured and calculated. This means that each location receives a UV dose corresponding to its effluent dose, ensuring a uniform distribution of UV dose within the virtual cross-section. By setting the lamps based on the UV dose, the disinfection effect is improved while energy consumption is reduced. This is crucial for maintaining stable disinfection results. By comprehensively considering effluent dose and water quality parameters, a uniform and accurate UV dose is ensured at each location within the virtual cross-section, achieving efficient, stable, and reliable disinfection while reducing operating and maintenance costs. Furthermore, this solution enhances the system's reliability and durability, providing strong support for practical applications.

[0124] This application also provides an ultraviolet sterilizer disinfection device, the device including a memory and at least one processor, the memory storing a computer program, the at least one processor being configured to execute the computer program to implement the steps of the ultraviolet sterilizer disinfection method according to any one of the claims of this application.

[0125] In this application, a readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. The program product can take the form of any combination of one or more readable media. A readable medium can be a readable signal medium or a readable storage medium. A readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0126] Computer-readable storage media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The readable storage medium may also be any readable medium capable of sending, propagating, or transmitting a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, or any suitable combination thereof. Program code for performing operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar programming languages. The program code may be executed entirely on a user computing device, partially on an associated device, as a standalone software package, partially on a user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing devices can be connected to user computing devices via any type of network, including local area networks (LANs) or wide area networks (WANs), or they can be connected to external computing devices (e.g., via the Internet using an Internet service provider).

[0127] This application describes the invention from the perspectives of purpose, performance, progress, and novelty, and it meets the functional enhancement and use requirements emphasized by the Patent Law. The above description and drawings are merely preferred embodiments of this application and are not intended to limit this application. Therefore, all structures, devices, features, etc., that are similar to or identical to those of this application, i.e., all equivalent substitutions or modifications made in accordance with the scope of this patent application, shall fall within the scope of protection of this patent application.

[0128] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A method for disinfection using an ultraviolet sterilizer, characterized in that, The method includes: The flow rate and light intensity at different locations within the sterilizer cavity are obtained; the effluent dosage at each location is determined based on the flow rate and light intensity. The ultraviolet radiation dose at the corresponding location is obtained based on the water output dose; According to the ultraviolet radiation dose, ultraviolet lamps with corresponding power are installed at different positions in the sterilizer cavity; The sterilizer cavity includes multiple virtual sterilizer cavity cross-sections; The process of acquiring the flow velocity and light intensity at different locations within the sterilizer cavity, and obtaining the effluent dosage at each location based on the flow velocity and light intensity, includes: Acquire light intensity and flow velocity at different locations on the cross-section of each sterilizer cavity; The light intensity and flow velocity at the same location are coupled, and the effluent dose at the corresponding location is obtained based on the coupling result. The acquisition of light intensity and flow velocity at different locations across the cross-section of each sterilizer cavity includes: Divide the cross-section of each sterilizer cavity into multiple squares of the same size; Obtain the flow velocity within each square of each cross section, and the light intensity value within each square of any cross section; The flow velocity value of each block is obtained based on the flow velocity of the blocks at the same position in the cross-section of each sterilizer cavity. The process of obtaining the flow velocity value of each block based on the flow velocity of blocks at the same position in the cross-section of each sterilizer cavity includes: The flow velocities of blocks at the same position in the cross-section of each sterilizer cavity are weighted and averaged to obtain the flow velocity value of each block. The flow rate adjustment range is determined based on the variance of the flow rate of the blocks at the same position in the cross-section of each sterilizer cavity. The weights corresponding to the flow velocities across the cross-section of the sterilizer cavity satisfy the following conditions: in, Let be the weight of the cross-section of the j-th sterilizer cavity; is the distance coefficient; n is the number of cross sections; The distance between the cross-section of the j-th sterilizer cavity and the geometric center of the sterilizer cavity; The distance between the farthest cross-section of the sterilizer cavity from the geometric center of the sterilizer cavity and the geometric center of the sterilizer cavity; It is the distance between the nearest cross-section of the sterilizer cavity to the geometric center of the sterilizer cavity; , For adjustment coefficients, , ; Let be the flow velocity of a block at a certain location through the cross-section of the j-th sterilizer cavity; The minimum flow velocity is obtained by passing through the cross-section of each sterilizer cavity at this location. The maximum flow velocity is obtained for the block at this location through the cross-section of each sterilizer cavity. This is the result of normalizing the flow velocity obtained by the block at this location through the cross-section of the j-th sterilizer cavity.

2. The ultraviolet sterilizer disinfection method according to claim 1, characterized in that, The light intensity and flow velocity at the same location are coupled; And obtain the effluent dosage at the corresponding location based on the coupling result; including: Couple the light intensity and flow rate of the same square; obtain the product of the light intensity value and flow rate value of each square; The corresponding water output dose for each block is determined by multiplying the light intensity value and the flow rate value of each block.

3. The ultraviolet sterilizer disinfection method according to claim 1, characterized in that, The cross-sections of the multiple sterilizer cavities are arranged at equal intervals.

4. The ultraviolet sterilizer disinfection method according to claim 1, characterized in that, The step of obtaining the ultraviolet radiation dose at the corresponding location based on the effluent dose includes: The ultraviolet radiation dose is obtained through the following method: in, The ultraviolet radiation dose at a specific location. The outflow dose at this location; For standard effluent dosage, This is the standard ultraviolet radiation dose.

5. A UV sterilizer device, characterized in that, The apparatus includes a memory and at least one processor, the memory storing a computer program, and the at least one processor being configured to, when executing the computer program, implement the steps of the method as described in any one of claims 1 to 4.

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