A method and system for controlling ozone concentration

Abstract

This application relates to the field of textile disinfection technology, and in particular to an ozone concentration control method and system. The method includes: acquiring the initial air pressure value of the disinfection chamber and textile disinfection requirements; determining the target ozone concentration threshold and concentration maintenance duration based on the disinfection requirements parameters; calculating the target output rate of the ozone generating component by combining the initial air pressure value and the target ozone concentration threshold, and controlling the component to deliver ozone to the disinfection chamber at this rate; collecting real-time data on actual ozone concentration and air pressure changes within the chamber, and dynamically adjusting the ozone output rate based on the difference between the actual ozone concentration and the target threshold; determining whether the actual ozone concentration maintenance duration meets the required duration, and if it does, shutting down the ozone generating component and starting the exhaust component to exhaust air, and if it does not meet the requirement, continuously collecting data and dynamically adjusting the output rate. This application helps to accurately control the ozone concentration within the disinfection chamber, improving the safety and effectiveness of ozone disinfection of textiles.

Description

Technical Field

[0001] This application relates to the field of textile disinfection technology, and in particular to a method and system for controlling ozone concentration. Background Technology

[0002] Ozone disinfection is an effective way to solve the disinfection problem of porous textiles such as comforters. Its core principle is to take advantage of ozone's penetrating properties by using a "vacuum-pressurization" process to allow ozone to penetrate into the gaps of the comforter core, achieving deep sterilization. These types of textiles are often difficult to disinfect effectively using traditional washing and drying methods. The effectiveness of ozone disinfection directly depends on the precise matching of ozone concentration and treatment time: too high a concentration can easily lead to damage to textile fibers and material aging, while too low a concentration will fail to achieve the expected disinfection and sterilization goals.

[0003] When conducting ozone disinfection of textiles in a closed disinfection chamber, multiple factors can affect the stability of ozone concentration, including the air pressure inside the chamber, ambient temperature, the material properties of the textiles themselves, and the degree of contamination. Current mainstream ozone concentration control methods mostly employ a fixed output rate for ozone delivery, which has significant limitations: it cannot dynamically adjust the output rate based on real-time changes in air pressure within the chamber or deviations in actual ozone concentration. This easily leads to two types of problems—either excessive concentration damaging the textiles, or insufficient concentration resulting in inadequate disinfection. Furthermore, during the ozone exhaust phase after disinfection, the lack of gradient pressure and concentration control can easily lead to excessive ozone residue and excessively rapid depressurization, causing textiles to swell and become damaged.

[0004] Therefore, there is an urgent need to develop a precise ozone concentration control method adapted to the characteristics of textiles (especially comforters), to overcome the core technical pain points of existing technologies such as low ozone concentration control accuracy, poor scene adaptability, excessive ozone residue, and easy damage to textiles, so as to ensure the convenience and effectiveness of on-site disinfection and sterilization of textiles, and better meet the needs of hospitals, hotels and other scenarios for efficient disinfection of comforters and other textiles. Summary of the Invention

[0005] To help precisely control the ozone concentration in the disinfection chamber and improve the safety and effectiveness of ozone disinfection of textiles, this application provides an ozone concentration control method and system.

[0006] Firstly, this application provides an ozone concentration control method, which adopts the following technical solution:

[0007] A method for controlling ozone concentration, comprising:

[0008] Obtain the initial air pressure value in the disinfection chamber and the disinfection requirements of the target textiles;

[0009] Based on disinfection requirement parameters, obtain the target ozone concentration threshold and concentration maintenance duration;

[0010] Calculate the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold;

[0011] The ozone generating component is controlled to deliver ozone into the disinfection chamber at a target output rate.

[0012] Real-time data collection of actual ozone concentration and air pressure changes within the disinfection chamber;

[0013] The target output rate is dynamically adjusted based on the difference between the actual ozone concentration and the target ozone concentration threshold.

[0014] Determine whether the actual ozone concentration remains within the target ozone concentration threshold for the required duration.

[0015] If the concentration is maintained for a certain period of time, the ozone generating component will stop outputting ozone, and the exhaust component will be activated to discharge ozone.

[0016] If the required concentration maintenance time is not reached, data will continue to be collected and dynamic adjustment steps will be implemented.

[0017] Optionally, obtaining the target ozone concentration threshold and concentration maintenance duration based on disinfection requirement parameters includes:

[0018] Obtain the material type, thickness parameters, and pollution level of the target textile.

[0019] Find the ozone tolerance limit value corresponding to the material type and exclude concentration ranges that exceed the tolerance limit;

[0020] The baseline concentration value required for ozone penetration is adjusted based on thickness parameters;

[0021] The concentration correction factor is determined based on the pollution level.

[0022] The target ozone concentration threshold is calculated by multiplying the baseline concentration value by the correction factor.

[0023] The duration of ozone concentration maintenance is determined by combining the material type and the target ozone concentration threshold.

[0024] Optionally, calculating the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold includes:

[0025] Obtain the volume parameters of the disinfection chamber and the current ambient temperature value;

[0026] Based on the ideal gas law, calculate the total mass of ozone required to reach the target ozone concentration threshold.

[0027] Calculate the pressure compensation amount based on the difference between the initial air pressure value and the standard atmospheric pressure;

[0028] The total ozone mass is corrected by combining ambient temperature and air pressure compensation.

[0029] The time window for ozone delivery is allocated based on the duration of concentration maintenance.

[0030] The target output rate of the ozone generating component is calculated by using the corrected ratio of total ozone mass to the time window.

[0031] Optionally, calculating the target output rate of the ozone generating component using the corrected ratio of total ozone mass to the time window includes:

[0032] The corrected total ozone mass to the baseline ratio of the time window is calculated and used as an initial reference value for the target output rate;

[0033] Obtain the minimum and maximum output rates of the ozone generating component to form a rate constraint range;

[0034] Determine whether the initial reference value is within the rate constraint range;

[0035] If the initial reference value is within the rate constraint range, then the initial reference value is directly used as the candidate target output rate.

[0036] If the initial reference value is lower than the minimum output rate, then the minimum output rate is used as the candidate target output rate.

[0037] If the initial reference value is higher than the maximum output rate, then the maximum output rate will be used as the candidate target output rate.

[0038] Obtain the air pressure change response characteristics of the disinfection chamber;

[0039] The output rate of candidate targets is corrected based on the air pressure change response characteristics;

[0040] The corrected candidate target output rate was ultimately determined to be the target output rate of the ozone generating component.

[0041] Optionally, the correction of the candidate target output rate based on the air pressure change response characteristics includes:

[0042] Based on the air pressure change response characteristics, the air pressure transmission coefficient and air pressure leakage rate of the disinfection chamber are obtained;

[0043] Based on the pressure transmission coefficient, a mapping model between the output rate of the candidate target and the theoretical pressure change rate is established, and the theoretical pressure rise rate corresponding to the output rate of the candidate target is calculated.

[0044] Based on the air pressure compensation amount, air pressure leakage rate and initial air pressure value, calculate the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate;

[0045] Determine whether the theoretical air pressure rise rate is lower than the preset air pressure change rate threshold, and whether the corresponding steady-state air pressure value is lower than the preset safe air pressure threshold;

[0046] If both the theoretical pressure rise rate and the steady-state pressure value meet the threshold requirements, then the candidate target output rate is directly determined as the final target output rate.

[0047] If the theoretical air pressure rise rate exceeds the threshold requirement, the output rate of the candidate target will be reduced by a preset ratio, and the air pressure change rate corresponding to the corrected output rate will be recalculated until the threshold constraint is met.

[0048] If the steady-state air pressure value exceeds the safe air pressure threshold, the compensatory output rate attenuation ratio is calculated based on the air pressure leakage rate.

[0049] The candidate target output rate is reduced based on the compensatory output rate attenuation ratio, while the time window for ozone delivery is extended to ensure that the total mass ozone delivery demand remains unchanged.

[0050] The corrected output rate that meets the pressure constraint is determined as the final target output rate of the ozone generating component.

[0051] Optionally, the step of calculating the steady-state pressure value when the pressure inside the disinfection chamber reaches equilibrium under the candidate target output rate, based on the pressure compensation amount, pressure leakage rate, and initial pressure value, includes:

[0052] Based on the volume parameters of the disinfection chamber, the ambient temperature value, and the output rate of the candidate target, combined with the ideal gas law, the theoretical pressure increment caused by ozone input per unit time is calculated.

[0053] Based on the air pressure leakage rate of the disinfection chamber and the current instantaneous air pressure value, calculate the actual air pressure leakage reduction per unit time.

[0054] When the air pressure inside the disinfection chamber reaches a balanced state, an air pressure balance equation is established.

[0055] Substitute the initial air pressure value and the air pressure compensation amount into the air pressure balance equation to obtain the instantaneous air pressure value under the air pressure balance state;

[0056] Based on the sealing characteristic parameters of the disinfection chamber, the instantaneous air pressure calculation value is corrected for leakage compensation to obtain the corrected air pressure calculation value.

[0057] The corrected calculated air pressure value is determined as the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate.

[0058] Optionally, dynamically adjusting the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold includes:

[0059] Set ozone concentration deviation threshold ranges and divide them into insufficient concentration ranges, qualified concentration ranges, and excessive concentration ranges;

[0060] Calculate the real-time deviation between the actual ozone concentration and the target ozone concentration threshold, and determine the type of interval to which the real-time deviation value belongs;

[0061] If the real-time deviation value falls into the concentration deficit range, then obtain the deficit deviation amplitude and the ozone diffusion attenuation coefficient.

[0062] Based on the under-output deviation, increase the target output rate of the ozone generating component;

[0063] If the real-time deviation value falls within the concentration standard range, maintain the current target output rate of the ozone generating component and simultaneously monitor the rate of change of air pressure in the disinfection chamber.

[0064] If the rate of change of air pressure exceeds the preset safety threshold, the target output rate will be reduced based on the preset control rules.

[0065] If the real-time deviation value falls into the excessive concentration range, obtain the excessive deviation amplitude and the ozone decomposition rate;

[0066] Based on the excessive deviation, the target output rate of the ozone generating component is reduced.

[0067] Optionally, controlling the ozone generating component to stop outputting and activating the exhaust component to discharge ozone includes:

[0068] Obtain the current peak ozone concentration and stable air pressure value inside the disinfection chamber;

[0069] Based on the material type of the target textile, query the corresponding ozone residue safety threshold;

[0070] Set the gradient air pressure control target for the exhaust stage, and reduce the air pressure in the disinfection chamber to the ambient atmospheric pressure in a preset step size;

[0071] The initial output power of the exhaust assembly is determined based on the difference between the peak ozone concentration and the residual safety threshold.

[0072] Real-time acquisition of ozone concentration decay data and air pressure drop rate during the exhaust process;

[0073] If the rate of air pressure drop exceeds the preset gradient threshold, the output power of the exhaust component will be reduced, and the buffer pressure relief valve of the disinfection chamber will be opened simultaneously.

[0074] If the ozone concentration decay rate is lower than the preset decay threshold, the output power of the exhaust components will be increased.

[0075] Determine whether the real-time ozone concentration has dropped below the residual safety threshold;

[0076] If the residual pressure has dropped below the safe threshold and the air pressure inside the disinfection chamber has stabilized at ambient atmospheric pressure, then the exhaust system should be shut down.

[0077] If the exhaust power is not reduced to below the residual safety threshold, continue to adjust the exhaust power and collect data until the residual safety requirements are met.

[0078] Optionally, if the exhaust power is not reduced below the safety threshold, the process of continuously adjusting the exhaust power and collecting data until the residual safety requirements are met includes:

[0079] Calculate the residual difference between the real-time ozone concentration and the residual safety threshold, and record the current exhaust duration;

[0080] Obtain humidity data inside the disinfection chamber;

[0081] If the humidity is higher than the preset humidity threshold, the inhibition coefficient of humidity on ozone degradation is calculated.

[0082] Based on the residual difference, current exhaust duration, and suppression coefficient, the target output power of the exhaust assembly is adjusted;

[0083] Determine whether the corrected target output power is within the rated power range of the exhaust assembly;

[0084] If within the rated range, the exhaust assembly will operate at the corrected target output power;

[0085] If the rated power limit is exceeded, it will operate at the rated maximum power while extending the exhaust time.

[0086] If the power is below the rated lower limit, the intermittent exhaust mode will be activated, and the exhaust components will be started and stopped according to the preset cycle.

[0087] After each preset monitoring cycle, the residual difference and suppression coefficient are recalculated, and the exhaust control parameters are dynamically updated.

[0088] When the residual difference remains within the allowable fluctuation range for a preset duration, it is determined that the ozone residue has met the standard, and the exhaust components are stopped.

[0089] Secondly, this application also discloses an ozone concentration control system, which adopts the following technical solution:

[0090] An ozone concentration control system, comprising:

[0091] The first acquisition module is used to acquire the initial air pressure value in the disinfection chamber and the disinfection requirements parameters of the target textiles;

[0092] The second acquisition module is used to acquire the target ozone concentration threshold and concentration maintenance duration based on disinfection requirement parameters;

[0093] The rate calculation module is used to calculate the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold.

[0094] The ozone delivery module is used to control the ozone generating components to deliver ozone into the disinfection chamber at a target output rate.

[0095] The data acquisition module is used to collect real-time data on the actual ozone concentration and air pressure changes inside the disinfection chamber.

[0096] The rate adjustment module is used to dynamically adjust the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold.

[0097] The judgment module is used to determine whether the actual ozone concentration has been maintained within the target ozone concentration threshold for the required duration.

[0098] If the concentration maintenance time is reached, the first execution module controls the ozone generating component to stop outputting and starts the exhaust component to discharge ozone.

[0099] If the concentration maintenance duration is not reached, the second execution module is used to continuously collect data and perform dynamic adjustment steps.

[0100] In summary, this application includes the following beneficial technical effects:

[0101] 1. This application uses the material, thickness, and degree of pollution of the target textile as the core basis to determine the appropriate ozone concentration threshold and maintenance duration, so as to avoid textile fiber damage caused by excessive ozone concentration from the source, while ensuring the effectiveness of disinfection and sterilization.

[0102] 2. The ozone output rate is accurately calculated by combining the ideal gas law with the initial gas pressure and ambient temperature of the disinfection chamber. A second correction is made by the rate constraint of the ozone generation component and the gas pressure characteristics of the disinfection chamber, taking into account both the equipment operating limits and the safe operation requirements of the disinfection chamber.

[0103] 3. By using real-time collected ozone concentration and air pressure data to form a closed-loop control system, the ozone output rate is dynamically adjusted to ensure that the ozone concentration in the disinfection chamber remains stable within the target threshold, thus solving the concentration fluctuation problem caused by traditional fixed-rate ozone delivery.

[0104] 4. During the exhaust stage after disinfection, gradient air pressure control and ozone concentration are used in synergistic regulation. The exhaust power is adjusted in combination with the effect of humidity on ozone degradation to achieve ozone residue-free emission and further improve the safety of textile disinfection. Attached Figure Description

[0105] Figure 1 This is a main flowchart of an ozone concentration control method according to an embodiment of this application;

[0106] Figure 2 This is a flowchart of the steps to obtain the target ozone concentration threshold and the duration of concentration maintenance;

[0107] Figure 3 This is a flowchart of the steps for calculating the target output rate of an ozone generating component;

[0108] Figure 4 This is a flowchart illustrating the steps for dynamically adjusting the target output rate.

[0109] Figure 5 This is a block diagram of an ozone concentration control system according to an embodiment of this application.

[0110] Explanation of reference numerals in the attached figures:

[0111] 1. First acquisition module; 2. Second acquisition module; 3. Rate calculation module; 4. Ozone delivery module; 5. Data acquisition module; 6. Rate adjustment module; 7. Judgment module; 8. First execution module; 9. Second execution module. Detailed Implementation

[0112] In the first aspect, this application discloses a method for controlling ozone concentration.

[0113] Reference Figure 1 A method for controlling ozone concentration, comprising steps S101 to S109:

[0114] Step S101: Obtain the initial air pressure value in the disinfection chamber and the disinfection requirements of the target textile.

[0115] Specifically, in this embodiment, the initial air pressure value refers to the initial gas pressure value inside the disinfection chamber before ozone is introduced after the chamber is sealed, which is collected by the air pressure sensor inside the disinfection chamber; the disinfection requirement parameters refer to the core parameters related to the disinfection of the target textiles, specifically including the material type, thickness parameters, and pollution level of the target textiles, which can be obtained through manual input or textile information scanning.

[0116] Step S102: Based on the disinfection requirement parameters, obtain the target ozone concentration threshold and the duration of concentration maintenance.

[0117] Specifically, in this embodiment, the target ozone concentration threshold refers to a reasonable range of ozone concentrations that are suitable for the disinfection needs of the target textiles and will not cause damage to the textiles; the concentration maintenance time refers to the effective sterilization time during which the actual ozone concentration in the disinfection chamber stably reaches and remains within the target ozone concentration threshold range. This time is the necessary time to achieve thorough disinfection and sterilization of the target textiles. This time is the core timing benchmark for the disinfection operation. Only the time accumulated after the ozone concentration has stably reached the standard is included in the concentration maintenance time.

[0118] Step S103: Calculate the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold.

[0119] Specifically, in this embodiment, the ozone generating component is the core equipment for delivering ozone into the disinfection chamber, and the target output rate is the mass of ozone delivered into the disinfection chamber by the ozone generating component per unit time.

[0120] Step S104: Control the ozone generating component to deliver ozone into the disinfection chamber at the target output rate.

[0121] Specifically, in this embodiment, after receiving the target output rate instruction, the ozone generating component continuously delivers ozone into the sealed disinfection chamber at that rate. During the delivery process, the disinfection chamber is kept sealed to avoid concentration loss caused by ozone leakage. At the same time, the pressure change in the disinfection chamber is initially monitored to ensure that the pressure is within a safe range.

[0122] Step S105: Collect real-time data on actual ozone concentration and air pressure changes within the disinfection chamber.

[0123] Specifically, in this embodiment, the actual ozone concentration is collected by an ozone concentration sensor built into the disinfection chamber, and the real-time air pressure value and air pressure change rate are collected by an air pressure sensor. The collection frequency is once per second, forming a continuous concentration and air pressure data chain. The actual ozone concentration is the current real ozone concentration value in the disinfection chamber, and the air pressure change data includes the real-time air pressure value and the air pressure rise / fall rate per unit time.

[0124] Step S106: Dynamically adjust the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold.

[0125] Specifically, in this embodiment, the real-time deviation between the actual ozone concentration and the target ozone concentration threshold is calculated. Based on the sign and magnitude of the deviation, the target output rate of the ozone generating component is adjusted upward or downward. A negative deviation indicates insufficient concentration, a positive deviation indicates excessive concentration, and a zero deviation indicates that the concentration meets the standard. Through dynamic adjustment of the rate, the ozone concentration in the disinfection chamber is accurately and stably controlled, avoiding the problems of excessive or insufficient concentration.

[0126] Step S107: Determine whether the duration for which the actual ozone concentration is maintained within the target ozone concentration threshold has reached the required concentration maintenance duration.

[0127] Specifically, in this embodiment, when the actual ozone concentration in the disinfection chamber enters the target ozone concentration threshold range, timing begins and the concentration status is continuously monitored. If the concentration remains stable within the threshold range and the cumulative timing reaches the preset concentration maintenance time, the disinfection operation is determined to be completed. If the concentration deviates from the threshold range during the timing process, timing is restarted until the concentration returns to the threshold range and the cumulative concentration maintenance time is reached.

[0128] Step S108: If the concentration maintenance time is reached, control the ozone generation component to stop outputting and start the exhaust component to discharge ozone.

[0129] Specifically, in this embodiment, after receiving a stop command, the ozone generating component immediately stops generating and transporting ozone; the exhaust component is the ozone exhaust and depressurization device of the disinfection chamber. After starting, it begins to exhaust ozone gas in the disinfection chamber, while gradually reducing the air pressure in the chamber. During the exhaust process, it takes into account both the ozone concentration decay and the air pressure drop rate, so as to ensure that the ozone is discharged quickly and avoid damage to the textiles caused by excessive depressurization.

[0130] Step S109: If the concentration maintenance duration is not reached, continue to collect data and perform dynamic adjustment steps.

[0131] Specifically, in this embodiment, the actual ozone concentration and air pressure change data in the disinfection chamber are continuously collected by the sensor, and the dynamic rate adjustment operation in step S106 is repeatedly executed until the actual ozone concentration stabilizes within the target threshold and the cumulative time reaches the concentration maintenance time, and then the subsequent steps of stopping output and exhaust are executed.

[0132] Reference Figure 2 In one embodiment of this example, step S102, based on disinfection requirement parameters, obtains the target ozone concentration threshold and concentration maintenance duration, including steps S201 to S206:

[0133] Step S201: Obtain the material type, thickness parameters, and pollution level of the target textile.

[0134] Specifically, in this embodiment, the material types include common textile materials such as cotton, linen, silk, wool, chemical fibers, and blends. Different materials have different fiber structures and their tolerance to ozone varies significantly. The thickness parameter is the unit thickness value of the target textile. The greater the thickness of the textile, the higher the concentration of ozone required to penetrate the textile fiber layer. The pollution level is divided into three levels: light pollution, moderate pollution, and heavy pollution, based on the amount of stains and the number of bacterial colonies on the textile. The higher the pollution level, the higher the ozone sterilization concentration required.

[0135] Step S202: Query the ozone tolerance limit value corresponding to the material type and exclude concentration ranges that exceed the tolerance limit.

[0136] Specifically, in this embodiment, the ozone tolerance limit is the highest concentration of ozone that different textile materials can be exposed to without fiber damage, strength reduction, or color fading. This value is the industry-standard ozone tolerance for textiles. By querying this limit value, excessively high ozone concentration ranges can be directly excluded, thus avoiding irreversible damage to textiles caused by excessively high ozone concentrations from the source.

[0137] Step S203: Correct the base concentration value required for ozone penetration based on the thickness parameter.

[0138] Specifically, in this embodiment, the base concentration value is the minimum concentration value at which ozone can completely penetrate the surface of textiles and penetrate into the fibers to achieve sterilization and disinfection. For each preset unit increase in textile thickness, the base concentration value is adjusted upward accordingly. The corrected base concentration value can ensure that ozone can achieve thorough and penetrating disinfection of textiles without dead angles, avoiding the problem of surface disinfection meeting standards but internal bacterial residue.

[0139] Step S204: Determine the concentration correction factor based on the pollution level.

[0140] Specifically, in this embodiment, the concentration correction coefficient is a numerical coefficient that matches the degree of pollution in textiles and is a supplementary correction to the basic concentration value; the correction coefficient for light pollution is 1.0, the correction coefficient for moderate pollution is 1.2 to 1.5, and the correction coefficient for heavy pollution is 1.6 to 2.0. The higher the degree of pollution, the larger the correction coefficient, so as to ensure that the ozone concentration can be adapted to the corresponding sterilization requirements.

[0141] Step S205: Calculate the target ozone concentration threshold by multiplying the base concentration value by the correction factor.

[0142] Specifically, in this embodiment, the calculation formula for the target ozone concentration threshold is: target ozone concentration threshold = corrected base concentration value × concentration correction coefficient; if the calculated value exceeds the ozone tolerance limit of the textile material, the ozone tolerance limit is directly determined as the final target ozone concentration threshold.

[0143] Step S206: Determine the duration of ozone concentration maintenance by combining the material type and the target ozone concentration threshold.

[0144] Specifically, in this embodiment, the duration of ozone concentration maintenance is negatively correlated with the target ozone concentration threshold. The higher the ozone concentration, the shorter the required sterilization duration. At the same time, the duration is adjusted in conjunction with the density of the textile material. For materials with denser fiber structures, the duration of ozone action is appropriately extended to ensure that ozone can fully act on the inside of the fiber and achieve thorough sterilization.

[0145] Reference Figure 3In one embodiment of this example, step S103, which calculates the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold, includes steps S301 to S306:

[0146] Step S301: Obtain the volume parameters of the disinfection chamber and the current ambient temperature value.

[0147] Specifically, in this embodiment, the volume parameter is the effective sealed volume of the disinfection chamber, which is a fixed structural parameter of the disinfection chamber; the ambient temperature value is the average of the real-time ambient temperature outside the disinfection chamber and the initial temperature inside the chamber. Temperature directly affects the gaseous state and diffusion characteristics of ozone and is the core parameter for ozone mass calculation.

[0148] Step S302: Based on the ideal gas law, calculate the total mass of ozone required to reach the target ozone concentration threshold.

[0149] Specifically, the ideal gas law is PV=nRT, where P is the gas pressure, V is the volume of the disinfection chamber, n is the amount of ozone, R is the universal gas constant, and T is the thermodynamic temperature. Combining the molar mass of ozone, this equation can be used to accurately calculate the total mass of ozone required to reach the target ozone concentration threshold in the disinfection chamber. This value is the standard for the total amount of ozone delivered.

[0150] Step S303: Calculate the pressure compensation amount based on the difference between the initial air pressure value and the standard atmospheric pressure.

[0151] Specifically, in this embodiment, the standard atmospheric pressure is 101.325 kPa, and the pressure compensation is the absolute value of the difference between the initial pressure of the disinfection chamber and the standard atmospheric pressure. If the initial pressure is higher than the standard atmospheric pressure, the pressure rise in the chamber after ozone input will be greater, and the input of the total ozone mass needs to be appropriately reduced. If the initial pressure is lower than the standard atmospheric pressure, the input of the total ozone mass can be appropriately increased. The pressure compensation is used to correct the calculated value of the total ozone mass to adapt to the actual pressure conditions of the disinfection chamber.

[0152] Step S304: Correct the total ozone mass by combining the ambient temperature value and the air pressure compensation amount.

[0153] Specifically, in this embodiment, the higher the ambient temperature, the stronger the gaseous diffusion of ozone, and the slightly higher the total mass of ozone required at the same concentration; the greater the pressure compensation, the greater the correction range of the total mass of ozone; the corrected total mass of ozone is the precise amount required to reach the target ozone concentration threshold in the disinfection chamber, without any excess or deficiency.

[0154] Step S305: Allocate ozone delivery time windows based on the concentration maintenance duration.

[0155] Specifically, in this embodiment, the time window is the entire duration of the ozone generating component continuously supplying ozone into the disinfection chamber. This duration includes the total time from the start of ozone supply, the gradual increase in concentration to a stable level, and the continued small-dose replenishment of ozone after reaching the target level. This time window is greater than or equal to the pressurization time for the ozone concentration to rise to the target level, and less than or equal to the concentration maintenance time. The setting of this time window allows for a buffer time for ozone to diffuse and stabilize in the chamber, ensuring that the ozone concentration in the disinfection chamber can accurately and stably reach the target threshold range during ozone supply, and that the concentration will not suddenly rise beyond the target due to excessively rapid supply.

[0156] Step S306: Calculate the target output rate of the ozone generating component by using the corrected ratio of total ozone mass to the time window.

[0157] Specifically, in this embodiment, the formula for calculating the target output rate is: target output rate = corrected total ozone mass ÷ time window; this rate is the theoretical operating rate of the ozone generating component, which will be further corrected in combination with the equipment operating limits and the air pressure characteristics of the disinfection chamber; this rate is the benchmark rate for the ozone delivery stage, and after the concentration reaches the target, a small dynamic adjustment will be made based on this rate, rather than continuous full-rate delivery.

[0158] In one embodiment of this example, step S306, which calculates the target output rate of the ozone generating component using the corrected ratio of the total ozone mass to the time window, includes steps S401 to S409:

[0159] Step S401: Calculate the baseline ratio of the corrected total ozone mass to the time window, as an initial reference value for the target output rate.

[0160] Specifically, in this embodiment, the initial reference value is the ozone output rate calculated purely theoretically, without considering the hardware operating limits of the ozone generating components and the air pressure change characteristics of the disinfection chamber, and is only used as the basic value for rate calculation.

[0161] Step S402: Obtain the minimum and maximum output rates of the ozone generating component to form a rate constraint range.

[0162] Specifically, in this embodiment, the minimum output rate is the lowest ozone output that the ozone generating component can stably operate, and the maximum output rate is the rated maximum ozone output of the ozone generating component. Both are fixed hardware parameters of the ozone generating component. The ozone output rate must be within this constraint range; otherwise, it will cause equipment shutdown, malfunction, or a sharp drop in ozone generation efficiency.

[0163] Step S403: Determine whether the initial reference value is within the rate constraint range.

[0164] Step S404: If the initial reference value is within the rate constraint range, then the initial reference value is directly used as the candidate target output rate.

[0165] Step S405: If the initial reference value is lower than the minimum output rate, then the minimum output rate is taken as the candidate target output rate.

[0166] Step S406: If the initial reference value is higher than the maximum output rate, then the maximum output rate is taken as the candidate target output rate.

[0167] Specifically, in this embodiment, the candidate target output rate is the ozone output rate after the equipment operating limit correction is completed. It is an accurate value of the rate. Subsequently, only a secondary correction needs to be completed in combination with the air pressure characteristics of the disinfection chamber to determine the final target output rate.

[0168] Step S407: Obtain the air pressure change response characteristics of the disinfection chamber.

[0169] Specifically, in this embodiment, the air pressure change response characteristic is the regularity of the air pressure in the disinfection chamber as the ozone input changes. It includes core indicators such as air pressure conduction coefficient, air pressure leakage rate, and sealing characteristic parameters. It is an inherent structural characteristic of the disinfection chamber and is used to determine the degree of influence of the ozone input rate on the air pressure inside the chamber.

[0170] Step S408: Correct the output rate of the candidate target based on the air pressure change response characteristics.

[0171] Specifically, in this embodiment, the pressure characteristics of the disinfection chamber are considered to determine whether the pressure change in the chamber at the candidate rate exceeds the safety threshold. If it does, the rate is appropriately reduced and the ozone delivery time window is extended simultaneously. Under the premise of ensuring air pressure safety, the total ozone delivery requirement remains unchanged. The core principle of the correction is: the total ozone mass remains unchanged, and the air pressure safety requirements are adapted only by "reducing the rate + extending the time window", without affecting the final ozone concentration compliance effect.

[0172] Step S409: Finally determine the corrected candidate target output rate as the target output rate of the ozone generating component.

[0173] Specifically, in this embodiment, the corrected target output rate is the final operating parameter of the ozone generating component, which takes into account the ozone concentration requirements, equipment operating limits, and the air pressure safety of the disinfection chamber. It is the core execution standard for ozone delivery. This rate is the main rate during the ozone pressurization stage. After the concentration reaches the target, it will automatically switch to the maintenance and replenishment rate to further reduce the output.

[0174] In one embodiment of this example, step S408, which corrects the output rate of the candidate target based on the air pressure change response characteristics, includes steps S501 to S509:

[0175] Step S501: Based on the air pressure change response characteristics, obtain the air pressure transmission coefficient and air pressure leakage rate of the disinfection chamber.

[0176] Specifically, in this embodiment, the air pressure conduction coefficient is the proportionality coefficient of the change in air pressure in the disinfection chamber with the amount of ozone input. The larger the coefficient, the faster the air pressure rises. The air pressure leakage rate is the amount of air pressure lost per unit time in the disinfection chamber under sealed conditions. The air pressure leakage rate is negatively correlated with the sealing performance of the disinfection chamber. The better the sealing performance, the lower the air pressure leakage rate.

[0177] Step S502: Based on the pressure transmission coefficient, establish a mapping model between the output rate of the candidate target and the theoretical pressure change rate, and calculate the theoretical pressure rise rate corresponding to the output rate of the candidate target.

[0178] Specifically, in this embodiment, the theoretical pressure change rate is the rate at which the pressure inside the disinfection chamber increases with ozone input under ideal conditions of no pressure leakage; the mapping model is a linear model, and the higher the ozone output rate, the faster the theoretical pressure rises.

[0179] Step S503: Based on the air pressure compensation amount, air pressure leakage rate and initial air pressure value, calculate the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate.

[0180] Specifically, in this embodiment, the steady-state pressure value is the stable pressure value after the pressure rise in the disinfection chamber equals the pressure leakage. If the steady-state pressure value exceeds the safety threshold, the candidate rate needs to be corrected. This steady-state pressure value is the highest pressure value during the ozone delivery stage. After the concentration reaches the standard, the pressure will remain stable and will no longer continue to rise.

[0181] Step S504: Determine whether the theoretical air pressure rise rate is lower than the preset air pressure change rate threshold, and whether the corresponding steady-state air pressure value is lower than the preset safe air pressure threshold.

[0182] Specifically, in this embodiment, the preset air pressure change rate threshold is the maximum air pressure rise rate that the disinfection chamber can withstand. Exceeding this threshold can easily cause damage to the chamber's seals and deformation of the chamber. The preset safe air pressure threshold is the maximum rated pressure of the disinfection chamber, which is the red line for the safe operation of the disinfection chamber. Both thresholds must be met simultaneously to determine the air pressure safety of the candidate rate.

[0183] Step S505: If both the theoretical pressure rise rate and the steady-state pressure value meet the threshold requirements, then the candidate target output rate is directly determined as the final target output rate.

[0184] Step S506: If the theoretical air pressure rise rate exceeds the threshold requirement, the output rate of the candidate target is reduced by a preset ratio, and the air pressure change rate corresponding to the corrected output rate is recalculated until the threshold constraint is met.

[0185] Specifically, in this embodiment, the preset ratio is to decrease by 10% to 20% each time. By gradually correcting the rate, the ozone concentration is not insufficient due to a sudden drop in the rate, while ensuring that the rate of increase in air pressure returns to within the safe threshold. After each correction, the rate of change in air pressure is recalculated until the target is met.

[0186] Step S507: If the steady-state air pressure value exceeds the safe air pressure threshold, calculate the compensatory output rate attenuation ratio based on the air pressure leakage rate.

[0187] Specifically, the compensatory output rate attenuation ratio is the rate reduction ratio determined based on the air pressure leakage rate. The higher the leakage rate, the smaller the attenuation ratio. The core purpose is to control the air pressure inside the chamber within a safe range while offsetting air pressure leakage, thus avoiding excessive air pressure. In this embodiment, the compensatory output rate attenuation ratio α = [(Pw-Py)÷Pw]×(ηmax÷η), where Pw is the calculated steady-state air pressure value; Py is the preset safe air pressure threshold of the disinfection chamber; ηmax is the maximum air pressure leakage rate of the disinfection chamber, which is 2.0 kPa / min and is a fixed constant; and η is the actual air pressure leakage rate of the disinfection chamber.

[0188] Step S508: Based on the compensatory output rate attenuation ratio, the candidate target output rate is reduced, while the time window for ozone delivery is extended to ensure that the total mass ozone delivery demand remains unchanged.

[0189] Specifically, in this embodiment, the corrected ozone output rate Vc' = Vc × (1-α), where Vc is the candidate target output rate; the time window for ozone delivery is simultaneously corrected T' = T ÷ (1-α), where T is the original time window; the core conservation principle is: corrected rate × corrected time window = total ozone mass. This principle ensures that the ozone concentration in the disinfection chamber can accurately reach the target threshold. Only the ozone delivery rhythm is changed, without changing the final total ozone filling amount, thus achieving both safe control of air pressure and ensuring that the disinfection concentration meets the standard.

[0190] Step S509: Determine the corrected output rate that meets the pressure constraint condition as the final target output rate of the ozone generating component.

[0191] In one embodiment of this example, step S503, based on the pressure compensation amount, pressure leakage rate, and initial pressure value, calculates the steady-state pressure value when the pressure inside the disinfection chamber reaches equilibrium under the candidate target output rate, including steps S601 to S606:

[0192] Step S601: Based on the volume parameters of the disinfection chamber, the ambient temperature value, and the output rate of the candidate target, and combined with the ideal gas law, calculate the theoretical pressure increment caused by ozone input per unit time.

[0193] Specifically, in this embodiment, the theoretical pressure increment is the theoretical increase in pressure inside the disinfection chamber after ozone input per unit time. It is the core data for pressure balance calculation. The calculation formula and complete derivation process are as follows: ① First, retrieve the ideal gas law: PV=nRT, and derive the pressure increment formula by transforming the formula: ② Definition of each parameter: This represents the theoretical pressure increment caused by ozone input per unit time, expressed in kPa / min. The ozone generator delivers the amount of ozone into the disinfection chamber per unit time, expressed in mol / min; R is the universal gas constant, taken as 8.314 kPa·m. 3 / (mol·K) is a constant; T is the thermodynamic temperature of the sterilization chamber, in K. , V represents the ambient temperature in °C; V represents the effective sealed volume of the disinfection chamber in m³. 3 ③ Conversion of ozone amount per unit time: Where Vc is the output rate of the candidate target, in g / min; 4. The molar mass of ozone is taken as 48 g / mol, which is a constant; ④ Combining the formulas yields the final formula for calculating the theoretical pressure increment: The theoretical pressure increment calculated in this step is the pressure increase per unit time in the disinfection chamber caused solely by ozone input under ideal conditions with no pressure leakage and no other gas loss. This is the core foundational data for subsequent calculations of pressure balance and steady-state pressure values. There are no empirical estimates; all parameters are either measured or fixed constants, and the calculation results are accurate and without deviation.

[0194] Step S602: Based on the air pressure leakage rate of the disinfection chamber and the current instantaneous air pressure value, calculate the actual air pressure leakage reduction per unit time.

[0195] Specifically, in this embodiment, the actual reduction in air pressure leakage... The calculation formula is: λ is the air pressure leakage correction coefficient of the disinfection chamber, which is positively correlated with the current instantaneous air pressure value. The higher the instantaneous air pressure value, the larger the value of λ. The value range is 1.0 to 1.5. This coefficient is adapted to the actual leakage characteristics of the disinfection chamber. The higher the air pressure, the greater the leakage of the chamber. The actual air pressure leakage reduction is the actual air pressure loss per unit time in the disinfection chamber.

[0196] Step S603: When the air pressure inside the disinfection chamber reaches a balanced state, establish an air pressure balance equation.

[0197] Specifically, in this embodiment, the core of the pressure balance equation is: theoretical pressure increment per unit time = actual pressure leakage reduction per unit time, as shown in the formula: At this point, the increase in air pressure inside the disinfection chamber is completely equal to the amount of leakage, and the air pressure inside the chamber no longer continues to rise, entering a stable equilibrium state. This state is the stable air pressure state during the ozone delivery stage, and this equilibrium equation is the core basis for calculating the steady-state air pressure value.

[0198] Step S604: Substitute the initial air pressure value and air pressure compensation amount into the air pressure balance equation to solve for the instantaneous air pressure calculation value under the air pressure balance state.

[0199] Specifically, by substituting the two parameters into the pressure balance equation, the instantaneous pressure at pressure equilibrium is obtained through numerical solution. This value is the uncorrected baseline steady-state pressure.

[0200] Step S605: Based on the sealing characteristic parameters of the disinfection chamber, the instantaneous air pressure calculation value is corrected for leakage compensation to obtain the corrected air pressure calculation value.

[0201] Specifically, in this embodiment, the sealing characteristic parameter is a combined correction value of the aging coefficient of the sealing components and the gap coefficient of the chamber body of the disinfection chamber. The value ranges from 0.95 to 1.05, and the better the sealing performance... The closer the value is to 1.0, the better the corrected calculated air pressure value. This correction adapts to the actual hardware conditions of the disinfection chamber, making the calculation results more consistent with the actual working conditions of the disinfection chamber, completely avoiding the deviation between theoretical calculations and actual working conditions, and improving the accuracy of calculations.

[0202] Step S606: Determine the corrected calculated air pressure value as the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate.

[0203] Reference Figure 4 In one embodiment of this example, step S106, which dynamically adjusts the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold, includes steps S701 to S708:

[0204] Step S701: Set the ozone concentration deviation threshold range and divide it into the concentration under-limit range, the concentration standard range, and the concentration over-limit range.

[0205] Specifically, in this embodiment, the ozone concentration deviation threshold range is a three-segment quantitative concentration range defined by using a preset target ozone concentration threshold as a benchmark value. This range is used to determine whether the actual ozone concentration meets the sterilization requirements and poses no risk of damage to textiles. The insufficient concentration range is when the actual ozone concentration is lower than 80% of the target ozone concentration threshold. The qualified concentration range is when the actual ozone concentration is between 80% and 120% of the target ozone concentration threshold. The excessive concentration range is when the actual ozone concentration is higher than 120% of the target ozone concentration threshold. These three ranges are the core standards for dynamic control of ozone concentration, and different ranges correspond to different rate adjustment strategies.

[0206] Step S702: Calculate the real-time deviation between the actual ozone concentration and the target ozone concentration threshold, and determine the interval type to which the real-time deviation value belongs.

[0207] Specifically, in this embodiment, the real-time deviation value = actual ozone concentration - target ozone concentration threshold. A positive value indicates excessive concentration, a negative value indicates insufficient concentration, and zero indicates that the concentration meets the standard. By measuring the magnitude of the deviation value, the range type to which it belongs can be accurately determined, providing a basis for rate adjustment.

[0208] Step S703: If the real-time deviation value falls into the concentration deficit range, then obtain the deficit deviation amplitude and the ozone diffusion attenuation coefficient.

[0209] Specifically, in this embodiment, the under-concentration deviation is the absolute value of the difference between the actual concentration and the target threshold, and the ozone diffusion attenuation coefficient is the concentration attenuation ratio of ozone during diffusion within the disinfection chamber, calculated using the following formula: This coefficient is used to determine the reasonable extent of the rate increase, where This is the ozone diffusion attenuation coefficient.

[0210] Step S704: Based on the underestimation deviation, increase the target output rate of the ozone generating component.

[0211] Specifically, in this embodiment, the rate increase ratio is positively correlated with the undershoot deviation amplitude, and the rate increase formula is: ;in The increased ozone output rate is defined by Vc, which is the current target output rate, and k, which is the rate increase coefficient, ranging from 0.5 to 1.0. The larger the under-deduction deviation, the higher the rate increase ratio, ranging from 10% to 50%, ensuring that the ozone concentration can quickly recover to the concentration compliance range, shortening the concentration compliance time, and preventing the concentration from directly entering the excessive range due to a sudden increase in rate.

[0212] Step S705: If the real-time deviation value falls within the concentration standard range, maintain the current target output rate of the ozone generation component and simultaneously monitor the rate of change of air pressure in the disinfection chamber.

[0213] Specifically, in this embodiment, when the concentration reaches the standard, there is no need to significantly adjust the rate. Instead, a small dose is replenished at a stable rate (90% to 100% of the current rate). The core task is to keep the concentration within the standard range while monitoring the rate of change in air pressure in the disinfection chamber in real time. The duration of concentration maintenance at this point is the effective sterilization stage of the disinfection operation. The core of this stage is to ensure the stability of the concentration, rather than to continuously increase the concentration.

[0214] Step S706: If the rate of change of air pressure exceeds the preset safety threshold, the target output rate is reduced based on the preset control rules.

[0215] Specifically, in this embodiment, the preset control rule is to gradually reduce the rate by 10%, and the formula is: Until the rate of change in air pressure returns to within the safe threshold, this adjustment is a protective adjustment prioritizing air pressure safety. Even after the rate is reduced, the ozone concentration remains within the acceptable range; only the ozone supply is reduced, without affecting the sterilization effect. This balances stable ozone concentration with safe air pressure in the disinfection chamber. This is the target output rate after the adjustment.

[0216] Step S707: If the real-time deviation value falls into the excess concentration range, obtain the excess deviation amplitude and ozone decomposition rate.

[0217] Specifically, in this embodiment, the excess deviation amplitude is the absolute value of the difference between the actual concentration and the target threshold; the ozone decomposition rate μ is the proportion of ozone that naturally decomposes at room temperature and pressure, and its value is taken as 0.5~1.0mg / (m 3 The higher the ambient temperature, the larger the value of μ. This rate is used to determine the extent to which the ozone output rate is reduced, and combined with the natural decomposition of ozone, to accelerate the concentration back to the standard range.

[0218] Step S708: Based on the excessive deviation amplitude, reduce the target output rate of the ozone generating component.

[0219] Specifically, in this embodiment, the rate reduction ratio is positively correlated with the excessive deviation amplitude, and the rate reduction formula is as follows: ;in The value represents the reduced ozone output rate, where Vc is the current target output rate and m is the rate reduction coefficient, ranging from 0.6 to 1.0. The larger the excess deviation, the higher the rate reduction ratio, ranging from 10% to 60%. At the same time, the concentration is rapidly reduced to the acceptable range by relying on the natural decomposition of ozone, avoiding damage to textiles caused by excessively high concentrations. After the concentration drops, the rate will be readjusted to a stable state to ensure that the concentration remains stable within the acceptable range.

[0220] In one embodiment of this example, step S108, controlling the ozone generating component to stop outputting and starting the exhaust component to discharge ozone, includes steps S801 to S810:

[0221] Step S801: Obtain the current peak ozone concentration and stable air pressure value in the disinfection chamber.

[0222] Specifically, in this embodiment, the peak ozone concentration is the stable ozone concentration value in the disinfection chamber at the end of the disinfection stage, and the stable air pressure value is the steady-state air pressure value in the disinfection chamber at the end of the disinfection stage. Both are the core initial parameters of the exhaust stage.

[0223] Step S802: Based on the material type of the target textile, query the corresponding ozone residue safety threshold.

[0224] Specifically, in this embodiment, the ozone residue safety threshold is the maximum concentration of ozone that can remain on and inside the surface of textiles, which is a common safety standard in the industry. This threshold is a fixed value, and the ozone residue of all textiles must be lower than this value to ensure that there is no ozone residue hazard, no irritation, and no damage when using textiles.

[0225] Step S803: Set the gradient air pressure control target for the exhaust stage, and reduce the air pressure in the disinfection chamber to the ambient atmospheric pressure according to the preset step size.

[0226] Specifically, in this embodiment, the gradient air pressure control aims to gradually reduce the air pressure in the disinfection chamber by a preset kPa value, for example, by 10 kPa every 5 minutes, until it is equal to the ambient atmospheric pressure. This method can avoid the textiles from swelling and deforming due to excessively rapid depressurization, while protecting the sealing structure and the chamber itself of the disinfection chamber.

[0227] Step S804: Determine the initial output power of the exhaust assembly based on the difference between the peak ozone concentration and the residual safety threshold.

[0228] Specifically, in this embodiment, the larger the difference, the higher the initial output power of the exhaust component. The power range is 30% to 80% of the rated power of the exhaust component. The core purpose is to ensure that ozone is discharged quickly while avoiding safety hazards caused by a sudden drop in air pressure.

[0229] Step S805: Collect ozone concentration decay data and air pressure drop rate during the exhaust process in real time.

[0230] Specifically, in this embodiment, the real-time decay value of ozone concentration and the real-time rate of decrease of air pressure are continuously collected to provide data support for the dynamic adjustment of exhaust power and ensure the stability of the exhaust process.

[0231] Step S806: If the rate of decrease in air pressure exceeds the preset gradient threshold, reduce the output power of the exhaust component and simultaneously open the buffer pressure relief valve of the disinfection chamber.

[0232] Specifically, in this embodiment, the buffer pressure relief valve is a safety pressure relief structure for the disinfection chamber. It can slowly discharge the gas inside the chamber, reduce the rate of pressure drop, protect the integrity of the textiles, and prevent the chamber from being damaged due to excessive pressure relief.

[0233] Step S807: If the ozone concentration decay rate is lower than the preset decay threshold, increase the output power of the exhaust component.

[0234] Specifically, in this embodiment, the power increase ratio is 10% to 20% to ensure that the ozone concentration can be rapidly reduced to below the residual safety threshold, shorten the exhaust operation time, and improve the overall efficiency of the disinfection operation.

[0235] Step S808: Determine whether the real-time ozone concentration has dropped below the residual safety threshold.

[0236] Step S809: If the pressure has dropped below the residual safety threshold and the air pressure inside the disinfection chamber has stabilized at the ambient atmospheric pressure, then stop the operation of the exhaust assembly.

[0237] Specifically, in this embodiment, after the ozone residue meets the standard and the air pressure returns to zero, the exhaust operation is completed, the sealing structure of the disinfection chamber can be opened normally, and the textiles can be directly taken out for use without any risk of ozone residue.

[0238] Step S810: If the exhaust power is not reduced to below the residual safety threshold, continue to adjust the exhaust power and collect data until the residual safety requirements are met.

[0239] Specifically, in this embodiment, the output power of the exhaust component is dynamically adjusted according to the real-time decay of ozone concentration, while monitoring air pressure changes until the ozone residue level meets the standard and the air pressure returns to ambient atmospheric pressure; this process is a continuous closed-loop control to ensure that the final residue standard is met.

[0240] In one embodiment of this example, step S108, controlling the ozone generating component to stop outputting and starting the exhaust component to discharge ozone, includes steps S901 to S910:

[0241] Step S901: Calculate the residual difference between the real-time ozone concentration and the residual safety threshold, and record the current exhaust duration.

[0242] Specifically, in this embodiment, the residual difference is the absolute value of the real-time ozone concentration exceeding the residual safety threshold, which is the core basis for exhaust power correction; the current exhaust duration is used to determine exhaust efficiency and provide a reference for subsequent power and duration adjustments.

[0243] Step S902: Obtain humidity data inside the disinfection chamber.

[0244] Specifically, in this embodiment, humidity inhibits the natural decomposition reaction of ozone; the higher the humidity, the slower the degradation rate of ozone.

[0245] Step S903: If the humidity is higher than the preset humidity threshold, calculate the inhibition coefficient of humidity on ozone degradation.

[0246] Specifically, in this embodiment, the preset humidity threshold is 60%RH, and the inhibition coefficient is the ozone degradation attenuation ratio after the humidity exceeds the threshold. For every 10% RH increase in humidity, the inhibition coefficient increases by 0.1. This coefficient is used to determine the correction range of exhaust power. By increasing the exhaust power, the inhibitory effect of humidity on ozone degradation is offset, and ozone emission is accelerated.

[0247] Step S904: Based on the residual difference, the current exhaust duration, and the suppression coefficient, adjust the target output power of the exhaust assembly.

[0248] Specifically, the target output power correction of the exhaust assembly adopts a linear weighted correction formula, and the specific correction method is as follows: ,in, The target output power of the corrected exhaust assembly is expressed in kW (kilowatts), which is the optimal exhaust power to adapt to the current operating conditions. The initial output power of the exhaust assembly, i.e. the reference power determined in step S804, is expressed in kW. The residual difference is calculated using the following formula: Unit: mg / m³ 3 ; This refers to the real-time ozone residual concentration collected inside the disinfection chamber. This is the safe threshold for ozone residue. The larger the value, the higher the degree of ozone residue exceeding the standard, and the greater the increase in power correction. The coefficient is the inhibition factor of humidity on ozone degradation. It is dimensionless and ranges from 1.0 to 1.8. This coefficient is calculated in step S903. The higher the coefficient, the stronger the inhibition effect of humidity on the natural degradation of ozone, and the greater the increase in exhaust power required. The preset standard exhaust duration; This represents the current duration of exhaust. This is a duration correction factor, with a value range of 0.1 to 1.0. The shorter the current exhaust duration, the larger the value of this factor and the higher the power correction increase. Conversely, the correction range is gradually reduced to avoid the risk of a sudden drop in air pressure caused by excessive power in the later stages.

[0249] In this embodiment, the larger the residual difference and the higher the inhibition coefficient, the higher the correction value of the exhaust power, ensuring that the ozone concentration can quickly reach the standard; the corrected power is the optimal exhaust power adapted to the current working conditions, taking into account both efficiency and equipment safety.

[0250] Step S905: Determine whether the corrected target output power is within the rated power range of the exhaust assembly.

[0251] Specifically, in this embodiment, the rated power range of the exhaust component is its designed safe operating range. Exceeding this range can easily cause equipment failure, excessive energy consumption, or a sudden drop in exhaust efficiency. This judgment is a hardware protection step for the exhaust component.

[0252] Step S906: If within the rated range, operate the exhaust assembly at the corrected target output power.

[0253] Step S907: If the rated power limit is exceeded, operate at the rated maximum power while extending the exhaust time.

[0254] Specifically, in this embodiment, the limitation of the power limit is compensated by extending the exhaust time, ensuring that the ozone residue level ultimately meets the standard. This method is the optimal adaptation strategy under the hardware limit and has no equipment safety risks.

[0255] Step S908: If the power is below the rated lower limit, start the intermittent exhaust mode and start and stop the exhaust components according to the preset cycle.

[0256] Specifically, in this embodiment, the intermittent exhaust mode operates for 1 minute and stops for 0.5 minutes, which ensures the ozone exhaust effect, avoids mechanical wear and energy waste caused by low-power no-load operation of the equipment, and does not cause a sudden drop in air pressure.

[0257] Step S909: After each preset monitoring cycle, recalculate the residual difference and suppression coefficient, and dynamically update the exhaust control parameters.

[0258] Specifically, in this embodiment, the preset monitoring cycle is 2 minutes. By updating parameters in real time, the accuracy and adaptability of exhaust control are ensured, and timely responses are made to real-time changes in humidity and concentration.

[0259] Step S910: When the residual difference remains within the allowable fluctuation range for a preset duration, it is determined that the ozone residue has met the standard, and the exhaust component is stopped.

[0260] Specifically, in this embodiment, the allowable fluctuation range is ±0.005 mg / m 3 The preset duration is 3 minutes; once this condition is met, it can be determined that there is no ozone residue, the exhaust operation is completed, the disinfection chamber can be opened normally, and the textiles are disinfected without any residual hazards.

[0261] Secondly, this application also discloses an ozone concentration control system.

[0262] Reference Figure 5 An ozone concentration control system, comprising:

[0263] The first acquisition module 1 is used to acquire the initial air pressure value in the disinfection chamber and the disinfection requirements parameters of the target textiles;

[0264] The second acquisition module 2 is used to acquire the target ozone concentration threshold and concentration maintenance duration based on disinfection requirement parameters;

[0265] Rate calculation module 3 is used to calculate the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold.

[0266] Ozone delivery module 4 is used to control the ozone generating component to deliver ozone into the disinfection chamber at the target output rate;

[0267] Data acquisition module 5 is used to collect real-time data on the actual ozone concentration and air pressure changes inside the disinfection chamber;

[0268] The rate adjustment module 6 is used to dynamically adjust the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold.

[0269] Module 7 is used to determine whether the duration for which the actual ozone concentration is maintained within the target ozone concentration threshold has reached the required concentration maintenance duration.

[0270] If the concentration maintenance time is reached, the first execution module 8 is used to control the ozone generating component to stop outputting and start the exhaust component to discharge ozone.

[0271] If the concentration maintenance time is not reached, the second execution module 9 is used to continuously collect data and perform dynamic adjustment steps.

[0272] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for controlling ozone concentration, characterized in that, include: Obtain the initial air pressure value in the disinfection chamber and the disinfection requirements of the target textiles; Based on disinfection requirement parameters, obtain the target ozone concentration threshold and concentration maintenance duration; Calculate the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold; The ozone generating component is controlled to deliver ozone into the disinfection chamber at a target output rate. Real-time data collection of actual ozone concentration and air pressure changes within the disinfection chamber; The target output rate is dynamically adjusted based on the difference between the actual ozone concentration and the target ozone concentration threshold. Determine whether the actual ozone concentration remains within the target ozone concentration threshold for the required duration. If the concentration is maintained for a certain period of time, the ozone generating component will stop outputting ozone, and the exhaust component will be activated to discharge ozone. If the required concentration maintenance time is not reached, data will continue to be collected and dynamic adjustment steps will be implemented. The calculation of the target output rate of the ozone generating component based on the initial air pressure value and the target ozone concentration threshold includes: Obtain the volume parameters of the disinfection chamber and the current ambient temperature value; Based on the ideal gas law, calculate the total mass of ozone required to reach the target ozone concentration threshold. Calculate the pressure compensation amount based on the difference between the initial air pressure value and the standard atmospheric pressure; The total ozone mass is corrected by combining ambient temperature and air pressure compensation. The time window for ozone delivery is allocated based on the duration of concentration maintenance. The target output rate of the ozone generating component is calculated by using the corrected ratio of total ozone mass to time window. The calculation of the target output rate of the ozone generating component using the corrected ratio of total ozone mass to the time window includes: The corrected total ozone mass to the baseline ratio of the time window is calculated and used as an initial reference value for the target output rate; Obtain the minimum and maximum output rates of the ozone generating component to form a rate constraint range; Determine whether the initial reference value is within the rate constraint range; If the initial reference value is within the rate constraint range, then the initial reference value is directly used as the candidate target output rate. If the initial reference value is lower than the minimum output rate, then the minimum output rate is used as the candidate target output rate. If the initial reference value is higher than the maximum output rate, then the maximum output rate will be used as the candidate target output rate. Obtain the air pressure change response characteristics of the disinfection chamber; The output rate of candidate targets is corrected based on the air pressure change response characteristics; The corrected candidate target output rate was ultimately determined to be the target output rate of the ozone generating component.

2. The ozone concentration control method according to claim 1, characterized in that, The process of obtaining the target ozone concentration threshold and concentration maintenance duration based on disinfection requirement parameters includes: Obtain the material type, thickness parameters, and pollution level of the target textile. Find the ozone tolerance limit value corresponding to the material type and exclude concentration ranges that exceed the tolerance limit; The baseline concentration value required for ozone penetration is adjusted based on thickness parameters; The concentration correction factor is determined based on the pollution level. The target ozone concentration threshold is calculated by multiplying the baseline concentration value by the correction factor. The duration of ozone concentration maintenance is determined by combining the material type and the target ozone concentration threshold.

3. The ozone concentration control method according to claim 1, characterized in that, The correction of the candidate target output rate based on the air pressure change response characteristics includes: Based on the air pressure change response characteristics, the air pressure transmission coefficient and air pressure leakage rate of the disinfection chamber are obtained; Based on the pressure transmission coefficient, a mapping model between the output rate of the candidate target and the theoretical pressure change rate is established, and the theoretical pressure rise rate corresponding to the output rate of the candidate target is calculated. Based on the air pressure compensation amount, air pressure leakage rate and initial air pressure value, calculate the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate; Determine whether the theoretical air pressure rise rate is lower than the preset air pressure change rate threshold, and whether the corresponding steady-state air pressure value is lower than the preset safe air pressure threshold; If both the theoretical pressure rise rate and the steady-state pressure value meet the threshold requirements, then the candidate target output rate is directly determined as the final target output rate. If the theoretical air pressure rise rate exceeds the threshold requirement, the output rate of the candidate target will be reduced by a preset ratio, and the air pressure change rate corresponding to the corrected output rate will be recalculated until the threshold constraint is met. If the steady-state air pressure value exceeds the safe air pressure threshold, the compensatory output rate attenuation ratio is calculated based on the air pressure leakage rate. The candidate target output rate is reduced based on the compensatory output rate attenuation ratio, while the time window for ozone delivery is extended to ensure that the total mass ozone delivery demand remains unchanged. The corrected output rate that meets the pressure constraint is determined as the final target output rate of the ozone generating component.

4. The ozone concentration control method according to claim 3, characterized in that, The calculation of the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate, based on air pressure compensation, air pressure leakage rate, and initial air pressure value, includes: Based on the volume parameters of the disinfection chamber, the ambient temperature value, and the output rate of the candidate target, combined with the ideal gas law, the theoretical pressure increment caused by ozone input per unit time is calculated. Based on the air pressure leakage rate of the disinfection chamber and the current instantaneous air pressure value, calculate the actual air pressure leakage reduction per unit time. When the air pressure inside the disinfection chamber reaches a balanced state, an air pressure balance equation is established. Substitute the initial air pressure value and the air pressure compensation amount into the air pressure balance equation to obtain the instantaneous air pressure value under the air pressure balance state; Based on the sealing characteristic parameters of the disinfection chamber, the instantaneous air pressure calculation value is corrected for leakage compensation to obtain the corrected air pressure calculation value. The corrected calculated air pressure value is determined as the steady-state air pressure value when the air pressure in the disinfection chamber reaches equilibrium under the candidate target output rate.

5. The ozone concentration control method according to claim 1, characterized in that, The dynamic adjustment of the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold includes: Set ozone concentration deviation threshold ranges and divide them into insufficient concentration ranges, qualified concentration ranges, and excessive concentration ranges; Calculate the real-time deviation between the actual ozone concentration and the target ozone concentration threshold, and determine the type of interval to which the real-time deviation value belongs; If the real-time deviation value falls into the concentration deficit range, then obtain the deficit deviation amplitude and the ozone diffusion attenuation coefficient. Based on the under-output deviation, increase the target output rate of the ozone generating component; If the real-time deviation value falls within the concentration standard range, maintain the current target output rate of the ozone generating component and simultaneously monitor the rate of change of air pressure in the disinfection chamber. If the rate of change of air pressure exceeds the preset safety threshold, the target output rate will be reduced based on the preset control rules. If the real-time deviation value falls into the excessive concentration range, obtain the excessive deviation amplitude and the ozone decomposition rate; Based on the excessive deviation, the target output rate of the ozone generating component is reduced.

6. The ozone concentration control method according to claim 1, characterized in that, The process of controlling the ozone generation component to stop outputting and activating the exhaust component to discharge ozone includes: Obtain the current peak ozone concentration and stable air pressure value inside the disinfection chamber; Based on the material type of the target textile, query the corresponding ozone residue safety threshold; Set the gradient air pressure control target for the exhaust stage, and reduce the air pressure in the disinfection chamber to ambient atmospheric pressure in a preset step size; The initial output power of the exhaust assembly is determined based on the difference between the peak ozone concentration and the residual safety threshold. Real-time acquisition of ozone concentration decay data and air pressure drop rate during the exhaust process; If the rate of air pressure drop exceeds the preset gradient threshold, the output power of the exhaust component will be reduced, and the buffer pressure relief valve of the disinfection chamber will be opened simultaneously. If the ozone concentration decay rate is lower than the preset decay threshold, the output power of the exhaust components will be increased. Determine whether the real-time ozone concentration has dropped below the residual safety threshold; If the residual pressure has dropped below the safe threshold and the air pressure inside the disinfection chamber has stabilized at ambient atmospheric pressure, then the exhaust system should be shut down. If the exhaust power is not reduced below the residual safety threshold, continue to adjust the exhaust power and collect data until the residual safety requirements are met.

7. The ozone concentration control method according to claim 6, characterized in that, If the exhaust power is not reduced below the safety threshold, the process of continuously adjusting the exhaust power and collecting data until the residual safety requirements are met includes: Calculate the residual difference between the real-time ozone concentration and the residual safety threshold, and record the current exhaust duration; Obtain humidity data inside the disinfection chamber; If the humidity is higher than the preset humidity threshold, the inhibition coefficient of humidity on ozone degradation is calculated. Based on the residual difference, current exhaust duration, and suppression coefficient, the target output power of the exhaust assembly is adjusted; Determine whether the corrected target output power is within the rated power range of the exhaust assembly; If within the rated range, the exhaust assembly will operate at the corrected target output power; If the rated power limit is exceeded, it will operate at the rated maximum power while extending the exhaust time. If the power is below the rated lower limit, the intermittent exhaust mode will be activated, and the exhaust components will be started and stopped according to the preset cycle. After each preset monitoring cycle, the residual difference and suppression coefficient are recalculated, and the exhaust control parameters are dynamically updated. When the residual difference remains within the allowable fluctuation range for a preset duration, it is determined that the ozone residue has met the standard, and the exhaust components are stopped.

8. An ozone concentration control system for performing the method according to any one of claims 1 to 7, characterized in that, include: The first acquisition module (1) is used to acquire the initial air pressure value in the disinfection chamber and the disinfection requirements parameters of the target textiles; The second acquisition module (2) is used to acquire the target ozone concentration threshold and concentration maintenance duration based on the disinfection requirement parameters; The rate calculation module (3) is used to calculate the target output rate of the ozone generation component based on the initial air pressure value and the target ozone concentration threshold. Ozone delivery module (4) is used to control the ozone generating component to deliver ozone into the disinfection chamber at the target output rate; The data acquisition module (5) is used to collect real-time data on the actual ozone concentration and air pressure changes in the disinfection chamber. The rate adjustment module (6) is used to dynamically adjust the target output rate based on the difference between the actual ozone concentration and the target ozone concentration threshold. The judgment module (7) is used to determine whether the actual ozone concentration is maintained within the target ozone concentration threshold for the duration of concentration maintenance. If the concentration maintenance time is reached, the first execution module (8) controls the ozone generating component to stop output and starts the exhaust component to discharge ozone. If the concentration maintenance time is not reached, the second execution module (9) is used to continuously collect data and perform dynamic adjustment steps.

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