A care appliance disinfection system

Abstract

The present application relates to the technical field of disinfection system, and discloses a nursing appliance disinfection system, which comprises a six-stage modular control system by constructing a pre-flushing control module, an enzyme washing control module, a main cleaning control module, a rinsing control module, a hot disinfection control module and a drying control module, and realizes automatic switching of the cleaning mode of the nursing appliance disinfection process and dynamic regulation of the temperature. The present application realizes intelligent stage switching based on cleaning effect feedback, solves the technical problem that the traditional fixed mode single temperature cannot adapt to different stage requirements, effectively reduces the residual concentration of microorganisms on the surface of the appliance, and meets the medical disinfection safety standard.

Description

Technical Field

[0001] This invention relates to the field of disinfection system technology, and more particularly to a disinfection system for nursing instruments. Background Technology

[0002] Traditional nursing instrument sterilization equipment generally uses a fixed cleaning mode and constant temperature throughout the entire sterilization process, failing to adapt to the differentiated requirements for contaminant removal at different stages such as pre-rinsing, enzyme washing, main washing, rinsing, heat sterilization, and drying. This standardized control method leads to problems such as excessively high temperatures during the pre-rinsing stage causing protein coagulation, improper temperature control during the enzyme washing stage causing enzyme inactivation, insufficient mechanical cleaning intensity during the main washing stage, and temperature fluctuations during the heat sterilization stage affecting sterilization effectiveness. Ultimately, this results in excessive levels of residual microorganisms on the surface of the instruments and inside the cavities.

[0003] Existing disinfection equipment lacks an intelligent stage switching mechanism that provides real-time feedback on cleaning effectiveness. The transition between stages mainly relies on fixed time settings, making it impossible to determine whether a stage has been fully completed based on actual cleaning parameters such as turbidity, pH value, conductivity, and humidity. Furthermore, the temperature control method is simplistic, failing to implement differentiated control strategies for different stages, such as cold water mixing, segmented power heating, gradient temperature increase, and constant temperature maintenance, which severely restricts the stability and reliability of the disinfection effect. Summary of the Invention

[0004] This invention provides a disinfection system for nursing instruments. This invention realizes intelligent stage switching based on cleaning effect feedback, which solves the technical problem that the traditional fixed mode single temperature cannot adapt to the requirements of different stages, effectively reducing the concentration of microbial residues on the surface of instruments and meeting medical disinfection safety standards.

[0005] In a first aspect, the present invention provides a nursing instrument disinfection system, the nursing instrument disinfection system comprising: The pre-rinse control module is used to control the spray water temperature in the first temperature range during the pre-rinse stage of the nursing instruments, and to generate a pre-rinse completion signal when the timer reaches the first set duration. The enzyme washing control module is used to shut down the spray pump and switch to the enzyme washing stage according to the pre-rinsing completion signal. When the timer reaches the second set duration, an enzyme washing completion signal is generated. The main cleaning control module is used to shut down the enzyme cleaning circulation pump and switch to the main cleaning stage according to the enzyme cleaning completion signal. When the timer reaches the third set duration, the main cleaning completion signal is generated. The rinsing control module is used to shut down the main cleaning spray pump and ultrasonic generator and switch to the rinsing stage according to the main cleaning completion signal. When the timer reaches the fourth set duration, a rinsing completion signal is generated. The heat disinfection control module is used to shut down the pure water spray pump and switch to the heat disinfection stage according to the rinsing completion signal. When the timer reaches the fifth set duration, a heat disinfection completion signal is generated. The drying control module is used to close the steam sterilization valve and switch to the drying stage according to the heat sterilization completion signal. When the timer reaches the sixth set duration, the entire sterilization process is completed.

[0006] In conjunction with the first aspect, in a first implementation of the first aspect of the present invention, the pre-rinse control module is specifically used for: During the pre-rinsing stage of the nursing equipment, the temperature of the spray water is collected. When the temperature of the spray water exceeds the first upper temperature limit, a cooling command is output and the cooling water replenishment valve is opened. The mixing temperature is calculated based on the cold water temperature, hot water temperature, cold water flow coefficient, and hot water flow coefficient. The cold water flow coefficient is then adjusted to stabilize the mixing temperature within the first temperature range. When the timer reaches the first set duration and the turbidity value of the drained water is lower than the turbidity threshold, a pre-rinsing completion signal for the nursing appliance is generated.

[0007] In conjunction with the first aspect, in a second implementation of the first aspect of the present invention, the enzyme washing control module is specifically used for: The spray pump is turned off and the enzyme washing circulation pump is turned on according to the pre-rinsing completion signal. The amount of enzyme solution injected is calculated based on the loading capacity and unit loading capacity of the nursing instruments. The target temperature for enzyme washing is determined based on the enzyme type identifier. The actual temperature of the enzyme washing solution is collected and the enzyme washing temperature deviation between the actual temperature of the enzyme washing solution and the target temperature is calculated. When the enzyme washing temperature deviation is within the first deviation range, the power of the first heater is output. When the enzyme washing temperature deviation is within the second deviation range, the power of the second heater is output. When the enzyme washing temperature deviation is within the third deviation range, the power of the third heater is output. The pH value of the enzyme washing solution is collected. When the timer reaches the second set duration and the pH value of the enzyme washing solution is stable within the set pH range, an enzyme washing completion signal is generated.

[0008] In conjunction with the first aspect, in a third implementation of the first aspect of the present invention, the main cleaning control module is specifically used for: Based on the enzyme washing completion signal, the enzyme washing circulation pump is shut down and the main cleaning spray pump and ultrasonic generator are turned on simultaneously. The working frequency and output power of the ultrasonic generator are set. The heating rate is calculated and set based on the initial temperature, the target temperature of the second temperature range, and the heating time. After the main cleaning starts, the current target temperature is calculated based on the set heating rate and running time, and the heater power is output. The first drainage conductivity is collected. When the timer reaches a third set duration and the first drainage conductivity is lower than the second conductivity threshold, a main cleaning completion signal is generated.

[0009] In conjunction with the first aspect, in a fourth implementation of the first aspect of the present invention, the rinsing control module further includes: The pure water spray pump start unit is used to turn off the main cleaning spray pump and ultrasonic generator and turn on the pure water spray pump according to the main cleaning completion signal, so as to perform rinsing with purified water. The valve opening calculation unit is used to collect the pure water spray temperature. When the pure water spray temperature exceeds the third temperature range, the opening of the cold water replenishment valve is adjusted based on the pure water spray temperature and the rinsing target temperature. The rinsing completion unit is used to collect the second drainage conductivity. When the timer reaches the fourth set duration and the second drainage conductivity is lower than the third conductivity threshold, a rinsing completion signal is generated.

[0010] In conjunction with the first aspect, in the fifth implementation of the first aspect of the present invention, the valve opening calculation unit is specifically used for: Collect the pure water spray temperature and determine whether the pure water spray temperature exceeds the upper limit of the third temperature range; When the pure water spray temperature exceeds the upper limit of the third temperature range, calculate the cooling temperature difference between the pure water spray temperature and the rinsing target temperature; Multiply the cooling temperature difference by the valve opening adjustment coefficient to obtain the valve opening increment, and increase the valve opening by adding cold water according to the valve opening increment.

[0011] In conjunction with the first aspect, in a sixth implementation of the first aspect of the present invention, the heat disinfection control module further includes: The pressure regulating unit is used to shut off the pure water spray pump and open the steam sterilization valve according to the rinsing completion signal, and to fill the cleaning chamber with saturated steam at a set pressure through the steam pressure regulator. A temperature acquisition unit is used to acquire the temperature inside the cleaning chamber. When the temperature inside the cleaning chamber reaches the set disinfection temperature, the opening of the steam sterilization valve and the steam pressure are adjusted to stabilize the temperature inside the cleaning chamber in the fourth temperature range. The heat sterilization completion unit is used to calculate the sterilization equivalent time value based on the temperature inside the cleaning chamber and the set time increment. When the sterilization equivalent time value reaches the set sterilization threshold and the timer reaches the fifth set duration, a heat sterilization completion signal is generated.

[0012] In conjunction with the first aspect, in the seventh implementation of the first aspect of the present invention, the temperature acquisition unit is specifically used for: Collect the temperature inside the cleaning chamber and determine whether the temperature inside the cleaning chamber has reached the set disinfection temperature. When the temperature inside the cleaning chamber reaches the set disinfection temperature, the opening of the steam sterilization valve is adjusted from the fully open state to the set maintenance opening state. The opening of the steam sterilization valve is adjusted according to the cleaning temperature deviation between the temperature inside the cleaning chamber and the median of the fourth temperature range. The steam pressure is adjusted to a set pressure range by the steam pressure regulator, so that the temperature inside the cleaning chamber is stably maintained in the fourth temperature range.

[0013] In conjunction with the first aspect, in the eighth implementation of the first aspect of the present invention, the drying control module further includes: The hot air circulation unit is used to close the steam sterilization valve and simultaneously turn on the hot air circulation fan and the drying heater according to the heat disinfection completion signal, and to set the rotation speed and wind speed of the hot air circulation fan; The power control unit is used to collect the circulating air temperature and calculate the drying temperature deviation between the circulating air temperature and the drying target temperature. When the drying temperature deviation is within the first drying deviation range, it outputs the power of the first drying heater. When the drying temperature deviation is within the second drying deviation range, it outputs the power of the second drying heater. When the drying temperature deviation is within the third drying deviation range, it outputs the power of the third drying heater. The disinfection completion unit is used to collect the surface relative humidity of the nursing instruments. When the timer reaches the sixth set duration and the surface relative humidity is lower than the set humidity threshold, the entire disinfection process is completed.

[0014] In conjunction with the first aspect, in the ninth implementation of the first aspect of the present invention, the power control unit is specifically used for: Collect the circulating air temperature and calculate the drying temperature deviation between the target drying temperature and the circulating air temperature; When the drying temperature deviation is within the first drying deviation range, the first drying heater power is output for full-power heating; when the drying temperature deviation is within the second drying deviation range, the second drying heater power is output for medium-power heating; and when the drying temperature deviation is within the third drying deviation range, the third drying heater power is output for low-power maintenance.

[0015] The technical solution provided by this invention achieves automatic switching of cleaning modes and dynamic temperature control in the disinfection process of nursing instruments by constructing a six-stage modular control system consisting of a pre-rinse control module, an enzyme wash control module, a main wash control module, a rinsing control module, a heat disinfection control module, and a drying control module. In the pre-rinse stage, the spray water temperature is precisely controlled within the first temperature range by adjusting the cold water flow coefficient to prevent protein coagulation caused by hot water. In the enzyme wash stage, a differentiated target temperature is determined based on the enzyme type identifier, and a segmented power control strategy is adopted to stabilize the enzyme wash solution temperature within the optimal enzyme activity range. In the main wash stage, gradient heating combined with ultrasonic oscillation is implemented according to the set heating rate for deep cleaning of complex structures. In the rinsing stage, cooling is controlled by adjusting the opening of the cold water replenishment valve. In the heat disinfection stage, a steam pressure regulator maintains a constant temperature within the cleaning chamber and accumulates the sterilization equivalent time value to ensure thorough sterilization. In the drying stage, the heater power is output in segments according to the temperature deviation to quickly remove residual moisture. The system generates completion signals between each stage through a dual judgment mechanism that uses timers and multiple parameters such as turbidity, pH, conductivity, sterilization equivalent time, and relative humidity. This enables intelligent stage switching based on cleaning effect feedback, solving the technical problem that the traditional fixed mode with a single temperature cannot adapt to the requirements of different stages. This effectively reduces the concentration of residual microorganisms on the surface of instruments, meeting medical disinfection safety standards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the nursing equipment disinfection system in an embodiment of the present invention; Figure 2 This is a dynamic temperature control curve for the disinfection of nursing instruments in six stages according to an embodiment of the present invention; Figure 3 This is a flowchart of the segmented power control for temperature deviation during the enzyme washing stage in an embodiment of the present invention; Figure 4 This is a graph showing the linear gradient heating and isothermal maintenance curves during the main cleaning stage in an embodiment of the present invention. Figure 5 This is a cumulative curve of the sterilization equivalent time A0 during the heat disinfection stage in an embodiment of the present invention. Detailed Implementation

[0018] This invention provides a sterilization system for nursing instruments. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, systems, products, or devices.

[0019] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the nursing instrument disinfection system of the present invention includes: The pre-rinse control module 101 is used to control the spray water temperature in a first temperature range during the pre-rinse stage of the nursing instruments, and to generate a pre-rinse completion signal when the timer reaches a first set duration. The enzyme washing control module 102 is used to shut down the spray pump and switch to the enzyme washing stage according to the pre-rinsing completion signal. When the timer reaches the second set duration, an enzyme washing completion signal is generated. The main cleaning control module 103 is used to shut down the enzyme washing circulation pump and switch to the main cleaning stage according to the enzyme washing completion signal. When the timer reaches the third set duration, the main cleaning completion signal is generated. The rinsing control module 104 is used to shut down the main cleaning spray pump and ultrasonic generator and switch to the rinsing stage according to the main cleaning completion signal. When the timer reaches the fourth set duration, a rinsing completion signal is generated. The heat disinfection control module 105 is used to shut down the pure water spray pump and switch to the heat disinfection stage according to the rinsing completion signal. When the timer reaches the fifth set duration, a heat disinfection completion signal is generated. The drying control module 106 is used to close the steam sterilization valve and switch to the drying stage according to the heat sterilization completion signal. When the timer reaches the sixth set time, the entire sterilization process is completed.

[0020] Figure 2This diagram illustrates the dynamic temperature control curves for the six stages of nursing instrument disinfection. The horizontal axis represents disinfection time (in minutes), and the vertical axis represents control temperature (in °C). Solid lines represent the actual temperature control curves for each stage, while dashed lines represent temperature jumps during stage transitions. The curves sequentially demonstrate the differentiated temperature control strategies for the pre-rinse stage (25°C cold water spray), the enzyme wash stage (40°C warm water immersion), the main cleaning stage (45-60°C gradient temperature spray), the rinsing stage (45°C pure water rinsing), the heat disinfection stage (90°C steam sterilization), and the drying stage (80°C hot air circulation).

[0021] In one specific embodiment, the pre-rinse control module 101 is specifically used for: During the pre-rinsing stage of the nursing equipment, the temperature of the spray water is collected. When the temperature of the spray water exceeds the first upper temperature limit, a cooling command is output and the cooling water replenishment valve is opened. The mixing temperature is calculated based on the cold water temperature, hot water temperature, cold water flow coefficient, and hot water flow coefficient. The cold water flow coefficient is then adjusted to stabilize the mixing temperature in the first temperature range. When the timer reaches the first set duration and the turbidity value of the drain is lower than the turbidity threshold, a pre-rinse completion signal for the nursing equipment is generated.

[0022] Specifically, during the pre-rinsing stage of nursing instruments, in order to effectively remove primary contaminants (such as blood, body fluids, and other particulate matter) from the instrument surface and prevent protein-based contaminants from thermally coagulating and adhering to the instrument surface under high-temperature conditions, a temperature sensor arranged in the spray circuit collects the spray water temperature in real time, and the real-time temperature is recorded as the spray water temperature T. 喷淋 (t), and compare it with the preset first temperature upper limit. When T 喷淋 (t) When the temperature exceeds the upper limit (e.g., 32℃), the controller outputs a cooling control command and simultaneously drives the actuator to open the cooling water replenishment valve, thereby introducing low-temperature cold water to participate in the mixing process, so as to quickly reduce the spray water temperature back to the set range. During the mixing process, the current cold water temperature T is collected. 冷 and hot water temperature T 热 At the same time, obtain the corresponding cold water flow coefficient. 冷 and hot water flow coefficient 热 And based on the real-time mixing temperature calculation formula T 混 =( 冷 ×T 冷 + 热 ×T 热 ) / ( 冷 + 热The controller calculates the current mixed water temperature. The controller will then set T... 混 Compared with a preset first temperature range (e.g., 25±3℃), if T 混 If it is still above the upper limit boundary, then increase it. 冷 In this way, the proportion of cold water injected is increased, thereby lowering the mixed water temperature; conversely, if T 混 If it's too low, reduce it appropriately. 冷 The overall temperature is maintained dynamically and stably within the target temperature range. Temperature control is iteratively calculated and executed with a sampling frequency of seconds. Simultaneously, the spray pump operates continuously at a set pressure (e.g., 0.3 MPa) and a set flow rate (e.g., 8 L / min) to thoroughly rinse the surface of the nursing instruments. The large volume of rinsing water discharged is introduced into a turbidity sensor through a drain channel to monitor the turbidity of the discharged liquid in real time, i.e., the turbidity value (NTU) of the drain water. 排 (t). The turbidity value of the wastewater reflects the progress of pollutant removal. When the preset timer Timer1 runs for the first set duration (e.g., 180 seconds) and NTU is detected... 排 (t) After the turbidity level stabilizes below the preset turbidity threshold (e.g., 50 NTU) and remains stable for a certain duration (e.g., 30 seconds), the controller determines that the rinsing effect has met the standard and generates a pre-rinsing completion signal (Status). 预冲洗 = 1, and simultaneously record the total drainage V of this stage. 排水1 .

[0023] Between the pre-rinse and main cleaning stages, a multi-stage dynamic control step for spray pressure and flow rate is included: The corresponding spray pressure and flow rate setpoints are determined based on the current stage identifier. When the current stage is the pre-rinse stage, a first spray pressure and a first spray flow rate are set; when the current stage is the main cleaning stage, a second spray pressure and a second spray flow rate are set, wherein the second spray pressure is greater than the first spray pressure and the second spray flow rate is less than the first spray flow rate. The output pressure of the spray pump is collected by a pressure sensor, the pressure deviation between the spray pump output pressure and the set spray pressure is calculated, and the spray pump motor speed is adjusted according to the pressure deviation. When the pressure deviation is greater than the set pressure threshold, the speed of the spray pump motor is increased; when the pressure deviation is less than the set pressure threshold, the speed of the spray pump motor is decreased. The flow rate of the spray pipeline is collected by the flow sensor, and the flow deviation between the spray pipeline flow rate and the set spray flow rate is calculated. The opening of the spray valve is adjusted according to the flow deviation. When the flow deviation is greater than the set flow threshold, the opening of the spray valve is increased; when the flow deviation is less than the set flow threshold, the opening of the spray valve is decreased. The spray power output value is calculated based on the output pressure of the spray pump and the flow rate of the spray pipeline. When the spray power output value is stable within the set power range for a set duration, it is determined that the coordinated control of spray pressure and flow rate is completed.

[0024] In one specific embodiment, the enzyme washing control module 102 is specifically used for: Turn off the spray pump and turn on the enzyme washing circulation pump according to the pre-rinse completion signal. Calculate the amount of enzyme solution injected based on the loading capacity and unit loading capacity of the nursing instruments. The target temperature for enzyme washing is determined based on the enzyme type identifier. The actual temperature of the enzyme washing solution is collected and the enzyme washing temperature deviation between the actual temperature of the enzyme washing solution and the target temperature is calculated. When the enzyme washing temperature deviation is in the first deviation range, the power of the first heater is output. When the enzyme washing temperature deviation is in the second deviation range, the power of the second heater is output. When the enzyme washing temperature deviation is in the third deviation range, the power of the third heater is output. The pH value of the enzyme washing solution is collected. When the timer reaches the second set duration and the pH value of the enzyme washing solution is stable within the set pH range, an enzyme washing completion signal is generated.

[0025] Specifically, the controller receives the pre-rinse completion signal as a logical trigger condition, outputs a control command to shut down the spray pump and simultaneously start the enzyme washing circulation pump, thereby automatically switching the cleaning mode from spray rinsing to enzyme solution immersion circulation. Simultaneously with the start of the enzyme washing circulation pump, the system adjusts the current loading capacity M of the nursing equipment. 装载 And the preset unit loading enzyme solution usage coefficient k1, calculated according to the injection volume formula V 酶液注入 = k1× M 装载 The required injection volume of enzyme washing solution is calculated to ensure that the enzyme solution reaches an effective concentration within the washing chamber and fully covers the surface of the apparatus and the inner wall of the chamber, thereby improving the efficiency of the enzymatic reaction. The controller reads the input enzyme type identifier ID. 酶剂 Identifiers are used to distinguish different types of enzymes, such as ID. 酶剂 =1 represents protease, ID 酶剂 =2 represents lipase, ID 酶剂 =3 represents a complex enzyme, and the corresponding target enzyme washing temperature T is set according to different enzyme types. 酶洗目标 Temperatures such as 37℃, 42℃, or 40℃ are used. The actual temperature T of the enzyme washing solution is collected in real time by temperature sensors placed in the enzyme washing solution circulation path. 酶洗实际t And calculate the enzyme washing temperature deviation ΔT 酶洗 = T 酶洗目标 T 酶洗实际t The controller compares the enzyme washing temperature deviation with three preset deviation ranges: when ΔT 酶洗 When the temperature is within the first deviation range (e.g., ≥5℃), the first level of heater power P is output. 加热器 =3000W, to achieve rapid heating; when ΔT 酶洗 When the output is in the second deviation range (e.g., between 2°C and 5°C), the output power P is moderate. 加热器=1500W, to avoid overshoot; when ΔT 酶洗 When the output is in the third deviation range (e.g., <2℃), the output power P is low. 加热器 =500W to achieve precise temperature control. The segmented power control logic runs continuously throughout the entire enzyme washing stage, keeping the enzyme washing solution temperature stable within a precision range of ±1.5℃ of the target value, thereby maintaining the activity of various enzymes within the optimal range and improving the decomposition effect of organic pollutants. Simultaneously, the pH value of the enzyme washing solution is collected in real time by a pH sensor. t This is used to monitor pH fluctuations caused by the decomposition of organic matter during enzymatic reactions. When the preset timer 2 reaches the second set duration (e.g., 600 seconds) and pH is detected... t When the pH value remains stable within the set range (e.g., 6.5 to 7.5) for more than 60 seconds, the controller determines that the enzyme washing process is complete and generates a Status signal indicating completion. 酶洗 =1, serving as a prerequisite for starting the next stage of the main cleaning process, and the pH value is recorded. 最终 Used for evaluating cleaning effectiveness.

[0026] Figure 3 This is a schematic diagram of the segmented power control process for temperature deviation during the enzyme washing stage. The actual temperature of the enzyme washing solution is collected, and the temperature deviation between the actual temperature and the target temperature is calculated. Based on the magnitude of the temperature deviation, a classification is made: when the deviation is large, full power heating is output; when the deviation is moderate, medium power heating is output; and when the deviation is small, low power heating is output to maintain stable temperature control. The decision logic of the segmented power control strategy demonstrates a precise temperature control mechanism that avoids temperature overshoot by controlling the temperature deviation in intervals.

[0027] Figure 4 This diagram illustrates the linear gradient heating and isothermal maintenance curves for the main cleaning phase. The horizontal axis represents the main cleaning time (in seconds), and the vertical axis represents the spray water temperature (in °C). It includes both the theoretical and actual temperature curves. The curves are divided into two phases: a gradient heating phase (0-300 seconds) where the temperature linearly increases from 45 °C to 60 °C at a rate of 0.05 °C / s; and an isothermal maintenance phase (300-900 seconds) where the temperature remains at 60 °C. The linear gradient heating algorithm and temperature tracking control effect during the main cleaning phase demonstrate precise dynamic temperature regulation capabilities.

[0028] The main cleaning phase also includes an adaptive spray angle switching step based on the structural characteristics of the instruments: The instrument structural complexity level is determined according to the instrument type identifier. When the instrument type identifier corresponds to oral care instruments, it is set to the first complexity level; when it corresponds to tubular instruments, it is set to the second complexity level; and when it corresponds to surface-flattening instruments, it is set to the third complexity level. The spray angle switching sequence is then determined based on the instrument structural complexity level. When the instrument structural complexity level is the first complexity level, a multi-angle cross-spray mode is activated, controlling the first nozzle group to spray directly at a zero-degree angle and the second nozzle group to spray at a forty-five-degree angle. The first group of nozzles sprays at an angle, while the second group sprays at a 90-degree angle from the side. The working time of each nozzle group is a set switching time. The turbidity reduction rate of the drainage under different spray angles is collected by a turbidity sensor. The turbidity rate deviation between the drainage turbidity reduction rate and the set turbidity reduction rate threshold is calculated. When the turbidity rate deviation is less than zero, the working time of the current spray angle is extended. When the turbidity rate deviation is greater than zero, the working time of the current spray angle is shortened. The spray angle effectiveness score is calculated based on the cumulative working time of each nozzle group and the corresponding drainage turbidity reduction. The nozzle group with the highest spray angle effectiveness score is selected as the main spray execution unit and continues to work until the end of the main cleaning stage.

[0029] The main cleaning phase also includes a dynamic compensation step for spray parameters based on real-time feedback of cleaning effectiveness: Turbidity and conductivity values ​​of the wastewater are simultaneously collected using turbidity and conductivity sensors. The turbidity change rate and conductivity change rate of the wastewater within a set sampling period are calculated and used as real-time feedback parameters for cleaning effectiveness. The pollutant removal rate is determined based on the turbidity change rate. If the absolute value of the turbidity change rate is less than the set lower limit, the cleaning intensity is deemed insufficient, and a spray pressure increment compensation command is output, increasing the current spray pressure by a first pressure increment value. If the absolute value of the turbidity change rate is greater than the set upper limit, the cleaning intensity is deemed excessive, and a spray pressure reduction compensation command is output, reducing the current spray pressure... Reduce the second pressure reduction value; determine the cleaning agent residue removal rate based on the conductivity change rate. When the absolute value of the conductivity change rate is less than the set lower limit of the conductivity change rate, it is determined that the cleaning agent rinsing is insufficient, and a spray flow rate increment compensation command is output to increase the current spray flow rate by the first flow rate increment value. When the absolute value of the conductivity change rate is greater than the set upper limit of the conductivity change rate, it is determined that the cleaning agent is over-diluted, and a spray flow rate reduction compensation command is output to decrease the current spray flow rate by the second flow rate reduction value. The compensated spray pressure and spray flow rate are used as new control target values ​​and continuously executed. The turbidity change rate and conductivity change rate are recalculated every set sampling period, and dynamic compensation of spray parameters is executed until the drainage turbidity value and drainage conductivity value are simultaneously lower than their respective set thresholds, at which point the compensation adjustment stops.

[0030] In one specific embodiment, the main cleaning control module 103 is specifically used for: Based on the enzyme washing completion signal, the enzyme washing circulation pump is turned off and the main cleaning spray pump and ultrasonic generator are turned on simultaneously. The working frequency and output power of the ultrasonic generator are set. The heating rate is calculated and set based on the initial temperature, the target temperature of the second temperature range, and the heating time. After the main cleaning starts, the current target temperature is calculated based on the set heating rate and running time, and the heater power is output. The first drainage conductivity is collected. When the timer reaches the third set duration and the first drainage conductivity is lower than the second conductivity threshold, a main cleaning completion signal is generated.

[0031] Specifically, the controller receives the enzyme wash completion signal as a condition for process progression, outputs a control command to shut down the enzyme wash circulation pump, and simultaneously starts the main cleaning spray pump and ultrasonic generator, thereby completing the automatic switch from enzyme wash mode to main cleaning mode. The controller sets the operating frequency f of the ultrasonic generator while starting it. 超声 The frequency is 40kHz, which falls within the range where liquid cavitation is most effective. This frequency can generate strong microjets and cavitation burst impacts on the surface and inside the cavity of the instrument, improving the cleaning efficiency of microstructure areas. Simultaneously, the ultrasonic output power P is set... 超声 The power rating is 300W to meet the needs of deep cleaning of complex geometric parts (such as grooves, threads, and thin tubes) under the assistance of high-pressure spray. The controller is based on the initial temperature T before the main cleaning. 初始 The target temperature T in the second temperature range 目标2 (e.g., 60℃) and the set heating time t 升温 (e.g., 300 seconds), calculate the set heating rate v 升温 = (T 目标2 T 初始 ) / t 升温 The heating rate is set within a range of 0.05℃ / s to achieve a linear transition from the medium to the high temperature range, gradually dissolving oily contaminants and enhancing detergency in the later stages. At any time t after the main cleaning start time t0, the temperature is adjusted in real-time according to formula T. 目标当前 (t) = T 初始 + v 升温 × (t t0) Calculate the current target temperature and compare it with the actual temperature T of the main cleaning fluid collected by the temperature sensor. 主清洗 By comparing (t), the temperature difference ΔT is obtained. 主清洗 = T 目标当前 (t) T 主清洗(t), and then according to the proportional heating control model P 加热器 = k2 × ΔT 主清洗 The system outputs the corresponding heater power, where k2 is the power adjustment coefficient in W / ℃, used to ensure that the actual temperature rises steadily along the set target temperature curve, avoiding overshoot or lag. Simultaneously, the conductivity EC of the first drain is collected in real time by a conductivity sensor. 排1 (t), used to assess the concentration of residual cleaning agent in the cleaning solution and the degree of contaminant removal. When Timer3 reaches the third set duration t3 (e.g., 900 seconds) and EC... 排1 (t) remains below the second conductivity threshold EC 阈2 When the speed reaches 100 μS / cm and remains stable for a certain period of time (e.g., 90 seconds), the controller determines that the main cleaning stage is complete and outputs a main cleaning completion signal (Status). 主清洗 =1, and record the drainage conductivity EC 最终 and total drainage V 排水3 .

[0032] In one specific embodiment, the rinsing control module 104 further includes: The pure water spray pump start unit is used to turn off the main cleaning spray pump and ultrasonic generator and turn on the pure water spray pump according to the main cleaning completion signal, so as to carry out rinsing with purified water. The valve opening calculation unit is used to collect the pure water spray temperature. When the pure water spray temperature exceeds the third temperature range, the opening of the cold water replenishment valve is adjusted based on the pure water spray temperature and the rinsing target temperature. The rinsing completion unit is used to collect the second drainage conductivity. When the timer reaches the fourth set duration and the second drainage conductivity is lower than the third conductivity threshold, a rinsing completion signal is generated.

[0033] Specifically, the pure water spray pump activation unit receives the main cleaning completion signal and uses it as a trigger condition for executing control commands. It outputs a command to shut down the main cleaning spray pump and the ultrasonic generator, thus terminating the continuous operation of the combined high-pressure spray and physical cavitation cleaning actions during the main cleaning process. It then outputs a control signal to start the pure water spray pump, officially switching to the purified water spray rinsing mode. The rinsing medium used is pure water treated by reverse osmosis, with a conductivity controlled below 10 μS / cm. This effectively avoids the formation of scale or secondary chemical residues on the surface of the equipment by impurities such as calcium and magnesium ions or residual chlorine in conventional tap water, thereby meeting the high cleanliness requirements of the final cleaning stage of medical devices. During the rinsing process, the valve opening calculation unit calculates the current pure water spray temperature T. 漂洗 (t) Real-time data is collected and compared with a preset third temperature range, such as the rinsing target temperature T. 漂洗目标 The temperature was set to 45℃, but in the initial stage, due to the presence of residual hot water after the main wash, T 漂洗(t) When the temperature rises to 55°C or higher, the controller determines that the temperature has exceeded the upper limit of the third temperature range, and triggers the cooling control logic, outputting a value based on the temperature deviation ΔT. 降温 = T 漂洗 (t) T 漂洗目标 Based on the dynamic calculation results, adjust the opening α of the cold water supply valve. 冷 The specific adjustment method follows the proportional control relationship α. 冷 = k3 × ΔT 降温 Calculations are performed, where k3 is the cold water adjustment coefficient, expressed as a percentage increase in valve opening per degree Celsius, such as 5% / ℃. This allows for intelligent adjustment of the cold water mixing ratio based on the current temperature deviation, ensuring the mixed spray temperature steadily drops to the target range of 45±2℃ within the first 120 seconds of the rinsing process and maintains temperature stability. As the rinsing process continues, the rinsing completion unit collects the second drainage conductivity EC in real time. 排2 (t), used for dynamic monitoring of the removal progress of residues on the surface and inside of the appliance. The second drainage conductivity reflects the concentration level of dissolved impurities in the rinsing water; if cleaning agent residue or contaminant release is present, EC... 排2 (t) remains at a relatively high value. The controller continuously records the change in the second drainage conductivity and compares it with the third conductivity threshold EC. 阈3 (e.g., 50 μS / cm) for comparison. When Timer4 runs to the fourth set duration t4 (e.g., 300 seconds), and EC... 排2 (t) has stabilized below EC 阈3 If the rinsing continues for a set duration (e.g., 60 seconds) or more, it indicates that the cleaning agent, dissolved organic matter, and inorganic impurities on the surface and inside the tubes of the appliance have been largely removed, and the rinsing process has met the standard requirements. At this point, a rinsing completion signal (Status) is generated. 漂洗 =1, and record the final drainage conductivity EC 最终2 and total water consumption V 漂洗总 .

[0034] In one specific embodiment, the valve opening calculation unit is specifically used for: Collect the temperature of the pure water spray and determine whether the temperature of the pure water spray exceeds the upper limit of the third temperature range; When the pure water spray temperature exceeds the upper limit of the third temperature range, calculate the cooling temperature difference between the pure water spray temperature and the rinsing target temperature. Multiply the cooling temperature difference by the valve opening adjustment coefficient to obtain the valve opening increment, and then increase the amount of cold water to supplement the valve opening based on the valve opening increment.

[0035] Specifically, the real-time temperature of the spray water flow is continuously collected by temperature sensors installed in the pure water spray pipeline to obtain the pure water spray temperature T.漂洗 (t), and compare this value with the preset upper limit value T of the third temperature range. 上限 Perform a comparison. If the judgment result shows T 漂洗 (t) does not exceed T 上限 If the current water temperature is maintained, no adjustment will be made; if T is detected... 漂洗 (t) exceeds T 上限 If the rinse water temperature is determined to be too high, affecting the temperature zone transition or causing thermal stress buildup in the appliance, the temperature control mechanism is activated to calculate the current spray water temperature and the target rinse temperature T. 目标漂洗 The cooling temperature difference ΔT between them 冷却 = T 漂洗 (t) T 目标漂洗 The controller uses the cooling temperature difference as the driving parameter for the opening adjustment calculation, along with the set opening adjustment coefficient k. 调节 (The unit is percentage per degree Celsius) Perform multiplication to obtain the valve opening increment Δα. 冷 = k 调节 × ΔT 冷却 This quantifies the required chilled water adjustment range. The valve opening increment represents the proportion of additional chilled water needed to bring the spray temperature back to the target range. This is based on the initial chilled water supply valve opening α. 当前 Calculate the updated new opening degree α 更新 = α 当前 + Δα 冷 It outputs commands to drive the actuator to adjust the cold water replenishment valve to a new opening degree, thereby increasing the cold water injection ratio and rapidly reducing the mixed spray temperature, so that it tends to stabilize within the set target range.

[0036] In one specific embodiment, the heat disinfection control module 105 further includes: The pressure regulating unit is used to shut off the pure water spray pump and open the steam sterilization valve according to the rinsing completion signal, and to fill the cleaning chamber with saturated steam at a set pressure through the steam pressure regulator. The temperature acquisition unit is used to collect the temperature inside the cleaning chamber. When the temperature inside the cleaning chamber reaches the set disinfection temperature, the opening of the steam sterilization valve and the steam pressure are adjusted to stabilize the temperature inside the cleaning chamber in the fourth temperature range. The heat sterilization completion unit is used to calculate the sterilization equivalent time value based on the temperature inside the cleaning chamber and the set time increment. When the sterilization equivalent time value reaches the set sterilization threshold and the timer reaches the fifth set duration, a heat sterilization completion signal is generated.

[0037] Specifically, the pressure regulating unit receives the rinsing completion signal as a precondition for the control logic, outputs a control command to shut down the pure water spray pump to prevent cold water flow from continuing to affect the temperature stability inside the chamber, then activates the steam sterilization valve, and controls the steam introduction pressure through the steam pressure regulator to inject saturated steam of the set pressure level into the cleaning chamber. The set steam pressure P... 蒸汽 At a pressure of 0.7 MPa, the corresponding saturated steam temperature stabilizes at around 93°C. Utilizing the significant latent heat release effect of the steam, the surface temperature of the cavity and equipment rises rapidly. The temperature acquisition unit continuously collects the actual temperature T inside the cleaning chamber. 腔体 (t), and compared with the preset disinfection target temperature T. 消毒 Compare. When T 腔体 (t) first reaches or exceeds T 消毒 When the set value (e.g., 88℃) is reached, it is determined that the disinfection temperature zone has been established and the constant temperature maintenance control phase has begun. At this point, steam is no longer continuously injected in a fully open manner, but the controller dynamically adjusts the opening degree α of the steam sterilization valve according to temperature fluctuations. 蒸汽 With steam supply pressure P 蒸汽 The temperature within the cleaning chamber is stably maintained in the fourth temperature range, i.e., 90±3℃, through feedback control. The temperature control process relies on the coordinated action of high-frequency temperature sampling and opening adjustment to achieve rapid response and compensation control for instantaneous heat changes, thereby preventing a decrease in sterilization efficiency or the formation of localized cold zones due to temperature fluctuations. While maintaining stable temperature control, the heat sterilization completion unit executes a quantitative evaluation logic for sterilization effectiveness, based on the temperature within the cleaning chamber, T... 腔体 The cumulative calculation formula for sterilization equivalent time value is as follows: (t) and the set time increment Δt (e.g., 10 seconds): ; The A0 value reflects the microbial killing ability of the current heat disinfection process, and has stronger adaptability and scientific validity compared to traditional single time or temperature indicators. When the accumulated sterilization equivalent time value A0 reaches the set sterilization threshold (e.g., A0 ≥ 600) and the timer 5 reaches the fifth set duration t5 (e.g., 900 seconds), the controller determines that the current heat disinfection stage has met the sterilization requirements and generates a heat disinfection completion signal Status. 热消毒 =1, and synchronously record A0 最终 value and t 5实际 .

[0038] Figure 5This is a schematic diagram of the cumulative curve of sterilization equivalent time A0 value during the heat sterilization stage. The horizontal axis represents the heat sterilization time (unit: seconds), and the vertical axis represents the cumulative A0 value (dimensionless). The solid line represents the cumulative curve of A0 value over time. The curve is divided into two stages: the rapid heating stage (0-120 seconds), where the temperature rises from 45℃ to above 88℃, and the A0 value increases slowly; and the isothermal maintenance stage (120-900 seconds), where the temperature stabilizes at 90±3℃, and the A0 value accumulates linearly and rapidly to the sterilization completion point. This scientific method for quantitatively evaluating sterilization effectiveness based on sterilization equivalent time A0 value reflects a quantitative verification mechanism for the sterilization effect during the heat sterilization stage.

[0039] In one specific embodiment, the temperature acquisition unit is specifically used for: Collect the temperature inside the cleaning chamber to determine whether the temperature inside the cleaning chamber has reached the set disinfection temperature; When the temperature inside the cleaning chamber reaches the set disinfection temperature, adjust the opening of the steam sterilization valve from the fully open state to the set maintenance opening state. Adjust the opening of the steam sterilization valve according to the temperature deviation between the temperature inside the cleaning chamber and the cleaning temperature of the middle value of the fourth temperature range. The steam pressure is adjusted to the set pressure range by the steam pressure regulator, so that the temperature in the cleaning chamber is stably maintained in the fourth temperature range.

[0040] Specifically, the temperature acquisition module monitors the temperature changes inside the cleaning chamber in real time and displays the currently acquired chamber temperature T. 腔体 (t) and the preset disinfection temperature T 消毒 Perform continuous comparisons. When T is determined... 腔体 (t) has reached or exceeded T 消毒 This indicates that the cleaning chamber has reached the basic thermal environment required for microbial inactivation. The controller then adjusts the operating status of the steam sterilization valve, changing the valve opening α from its fully open position (previously used for the rapid heating phase) to... 蒸汽 = 100% converted to the set maintenance opening α 维持 For example, 70% is maintained to avoid further introduction of high-pressure steam that could cause temperature overshoot or pressure fluctuations within the cavity. Simultaneously, the current cavity temperature T is continuously monitored during the isothermal maintenance phase. 腔体 (t), and compare it with the median temperature T of the fourth temperature range. 中值 (For example, 90℃) is compared, and the cleaning temperature deviation ΔT is calculated in real time. 恒温 = T 腔体 (t) T 中值 When the cleaning temperature deviation is positive, meaning the cavity temperature is higher than the expected median value, the controller adjusts the temperature based on ΔT. 恒温 Appropriately reduce the opening α of the steam sterilization valve. 蒸汽To reduce heat input, when the deviation is negative, i.e., the cavity temperature is lower than the target median, the valve opening is adjusted accordingly to compensate for heat loss. The adjustment process dynamically updates the valve opening based on a proportional control strategy or a discrete step length adjustment method, ensuring that heat input is always balanced with heat loss. To coordinate with the steam flow rate adjustment, the pressure level P of the injected steam is controlled by a steam pressure regulator. 蒸汽 Adjust it to the set pressure range P 设定区间 (e.g., 0.65MPa to 0.75MPa), the pressure range corresponds to the required constant temperature range, and according to the thermodynamic properties of saturated steam, the temperature inside the cleaning chamber can be stably maintained in the fourth temperature range of 90±3℃.

[0041] In one specific embodiment, the drying control module 106 further includes: The hot air circulation unit is used to close the steam sterilization valve and simultaneously turn on the hot air circulation fan and the drying heater according to the signal that the heat sterilization is completed, and to set the speed and wind speed of the hot air circulation fan; The power control unit is used to collect the circulating air temperature and calculate the drying temperature deviation between the circulating air temperature and the drying target temperature. When the drying temperature deviation is within the first drying deviation range, it outputs the power of the first drying heater; when the drying temperature deviation is within the second drying deviation range, it outputs the power of the second drying heater; and when the drying temperature deviation is within the third drying deviation range, it outputs the power of the third drying heater. The disinfection completion unit is used to collect the surface relative humidity of nursing instruments. When the timer reaches the sixth set time and the surface relative humidity is lower than the set humidity threshold, the entire disinfection process is completed.

[0042] Specifically, the hot air circulation unit receives a signal indicating completion of heat sterilization as the trigger condition, outputting a control command to close the steam sterilization valve to prevent further steam injection into the cleaning chamber. Subsequently, the hot air circulation fan and the drying heater are simultaneously activated to establish a hot air circulation drying environment. The rotational speed n of the hot air circulation fan... 风机 Set to 1200 rpm to ensure airflow reaches Q. 风 = 150m 3 / h, corresponding to the circulating wind speed v 风 Maintaining a speed of 2.5 m / s, a stable high-speed hot air convection field is formed inside the cavity. This airflow passes through the surface of the appliance from top to bottom, carrying away residual moisture from the cavity. After being reheated by the heater, it flows back to form a closed loop, greatly improving drying efficiency and reducing drying time. During this process, the power control unit collects the temperature T in the circulating air channel in real time. 风 (t), and the preset drying target temperature T 干燥目标 Compare with (e.g., 80℃) and calculate the drying temperature deviation ΔT. 干燥 =T 干燥目标 T风 (t), the temperature difference is used to drive the dynamic power output regulation of the heater. When ΔT 干燥 When the temperature is within the first drying deviation range (e.g., ≥5℃), it indicates that the system is in the initial stage of heating, and the hot air temperature has not yet reached the set value. At this time, the controller outputs the first level of drying heater power P. 加热器 = 2000W, rapidly heating at full power; when ΔT 干燥 When the temperature is within the second drying deviation range (e.g., between 2℃ and 5℃), it transitions to the medium heating stage and outputs medium-range power P. 加热器 = 1200W, used to smoothly drive the temperature rise and avoid overshoot; while when ΔT 干燥 When the system temperature is within the third drying deviation range (e.g., <2℃), it indicates that the system temperature is close to the target value, requiring only minor compensation. The controller will then output a low-power output P. 加热器 = 800W, achieving a balance between high-precision temperature maintenance and energy consumption control. Simultaneously, to ensure that moisture on the surface of the care instruments has been completely evaporated and reached a safe level of dryness, the sterilization unit uses a humidity sensor to collect the relative humidity (RH) of the instrument surface in real time. 表面 (t), and combined with the preset humidity threshold RH 阈 (e.g., 15%) is combined with the running status of Timer6 for judgment. When Timer6 reaches the sixth set duration t6 (e.g., 600 seconds) and RH 表面 (t) has been continuously lower than RH 阈 If the drying process remains stable for a period of time (e.g., 120 seconds or more), it indicates that residual moisture on the surface of the appliance has been completely removed, and the drying process has reached the predetermined standard. Based on this, the process end instruction is generated. 信号 =1, complete the entire disinfection process.

[0043] In one specific embodiment, the power control unit is specifically used for: Collect the circulating air temperature and calculate the drying temperature deviation between the drying target temperature and the circulating air temperature; When the drying temperature deviation is within the first drying deviation range, the first drying heater power is output for full-power heating. When the drying temperature deviation is within the second drying deviation range, the second drying heater power is output for medium-power heating. When the drying temperature deviation is within the third drying deviation range, the third drying heater power is output for low-power maintenance.

[0044] Specifically, the temperature value T of the circulating airflow is collected in real time through the temperature acquisition module. 循环风 (t), this temperature reflects the actual thermal energy state of the hot air in the duct. The real-time temperature of the circulating air is compared with the preset drying target temperature T. 干燥目标 (For example, 80℃) Compare the two and calculate the temperature difference between them, i.e., the drying temperature deviation ΔT.干燥 = T 干燥目标 T 循环风 (t) is used to quantify the degree of deviation of the current hot air temperature from the ideal state. When judging ΔT... 干燥 If the temperature is within the first drying deviation range, for example, a deviation greater than or equal to 5°C, it indicates that the hot air temperature is far below the target temperature, the cavity is still in the initial stage of heating, and heat loss is significant. At this time, the controller outputs the first level of drying heater power P. 加热器1 Set to 2000W to achieve full-power heating, rapidly increasing the temperature of the circulating air with maximum heat injection speed; and when ΔT 干燥 If the temperature falls into the second drying deviation range, i.e., the deviation is between 2℃ and 5℃, it indicates that the temperature is close to the target but still needs to be steadily increased. To prevent temperature overshoot, the second level of drying heater power P is output. 加热器2 Set to 1200W, using medium power for gentle heating, controlling the heat to increase slowly; when ΔT 干燥 If the system is in the third drying deviation range, i.e., the deviation is less than 2℃, it indicates that the system is close to the target temperature or in a stable state. At this point, only fine-tuning of the supplemental heating is needed, and the controller outputs the third-level drying heater power P. 加热器3 For example, 800W is used to maintain the system temperature with low power, ensuring stable hot air conditions and avoiding energy waste or thermal damage to appliances.

[0045] Through the synergistic cooperation of the aforementioned components, a six-stage modular control system is constructed, comprising a pre-rinse control module 101, an enzyme wash control module 102, a main wash control module 103, a rinsing control module 104, a heat sterilization control module 105, and a drying control module 106. This system enables automatic switching of the cleaning mode and dynamic temperature control during the sterilization process of nursing instruments. In the pre-rinse stage, the spray water temperature is precisely controlled within the first temperature range by adjusting the cold water flow coefficient, preventing protein coagulation caused by hot water. In the enzyme wash stage, a differentiated target temperature is determined based on the enzyme type identifier, and a segmented power control strategy is adopted to stabilize the enzyme wash solution temperature within the optimal enzyme activity range. In the main wash stage, gradient heating combined with ultrasonic oscillation is implemented according to the set heating rate for deep cleaning of complex structures. In the rinsing stage, cooling is controlled by adjusting the opening of the cold water replenishment valve. In the heat sterilization stage, a steam pressure regulator maintains a constant temperature within the cleaning chamber and accumulates the sterilization equivalent time value to ensure thorough sterilization. In the drying stage, the heater power is output in segments according to temperature deviation to quickly remove residual moisture. The system generates completion signals between each stage through a dual judgment mechanism that uses timers and multiple parameters such as turbidity, pH, conductivity, sterilization equivalent time, and relative humidity. This enables intelligent stage switching based on cleaning effect feedback, solving the technical problem that the traditional fixed mode with a single temperature cannot adapt to the requirements of different stages. This effectively reduces the concentration of residual microorganisms on the surface of instruments, meeting medical disinfection safety standards.

[0046] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and units described above can be referred to the corresponding processes in the foregoing system embodiments, and will not be repeated here.

[0047] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the system described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0048] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A disinfection system for nursing instruments, characterized in that, include: The pre-rinse control module is used to control the spray water temperature in the first temperature range during the pre-rinse stage of the nursing instruments, and to generate a pre-rinse completion signal when the timer reaches the first set duration. The enzyme washing control module is used to shut down the spray pump and switch to the enzyme washing stage according to the pre-rinse completion signal, and generate an enzyme washing completion signal when the timer reaches the second set duration. Specifically, the enzyme washing control module is used to: shut down the spray pump and start the enzyme washing circulation pump according to the pre-rinse completion signal; calculate the enzyme solution injection volume based on the loading capacity and unit loading capacity of the nursing instruments; determine the enzyme washing target temperature according to the enzyme type identifier; collect the actual temperature of the enzyme washing solution and calculate the enzyme washing temperature deviation between the actual temperature and the enzyme washing target temperature; output the first heater power when the enzyme washing temperature deviation is in the first deviation range; output the second heater power when the enzyme washing temperature deviation is in the second deviation range; output the third heater power when the enzyme washing temperature deviation is in the third deviation range; collect the pH value of the enzyme washing solution; and generate an enzyme washing completion signal when the timer reaches the second set duration and the pH value of the enzyme washing solution is stable within the set pH range. The main cleaning control module is used to shut down the enzyme washing circulation pump and switch to the main cleaning stage according to the enzyme washing completion signal. When the timer reaches the third set duration, it generates a main cleaning completion signal. Specifically, the main cleaning control module is used to: shut down the enzyme washing circulation pump and simultaneously start the main cleaning spray pump and ultrasonic generator according to the enzyme washing completion signal; set the working frequency and output power of the ultrasonic generator; calculate and set the heating rate according to the initial temperature, the target temperature of the second temperature range, and the heating time; calculate the current target temperature and output the heater power according to the set heating rate and running time after the main cleaning starts; collect the first drainage conductivity; and generate a main cleaning completion signal when the timer reaches the third set duration and the first drainage conductivity is lower than the second conductivity threshold. The rinsing control module is used to shut down the main cleaning spray pump and ultrasonic generator and switch to the rinsing stage according to the main cleaning completion signal. When the timer reaches the fourth set duration, a rinsing completion signal is generated. The heat disinfection control module is used to shut down the pure water spray pump and switch to the heat disinfection stage according to the rinsing completion signal. When the timer reaches the fifth set duration, a heat disinfection completion signal is generated. The drying control module is used to close the steam sterilization valve and switch to the drying stage according to the heat sterilization completion signal. When the timer reaches the sixth set duration, the entire sterilization process is completed.

2. The nursing instrument disinfection system according to claim 1, characterized in that, The pre-rinse control module is specifically used for: During the pre-rinsing stage of the nursing equipment, the temperature of the spray water is collected. When the temperature of the spray water exceeds the first upper temperature limit, a cooling command is output and the cooling water replenishment valve is opened. The mixing temperature is calculated based on the cold water temperature, hot water temperature, cold water flow coefficient, and hot water flow coefficient. The cold water flow coefficient is then adjusted to stabilize the mixing temperature within the first temperature range. When the timer reaches the first set duration and the turbidity value of the drained water is lower than the turbidity threshold, a pre-rinsing completion signal for the nursing appliance is generated.

3. The nursing instrument disinfection system according to claim 1, characterized in that, The rinsing control module also includes: The pure water spray pump start unit is used to turn off the main cleaning spray pump and ultrasonic generator and turn on the pure water spray pump according to the main cleaning completion signal, so as to perform rinsing with purified water. The valve opening calculation unit is used to collect the pure water spray temperature. When the pure water spray temperature exceeds the third temperature range, the opening of the cold water replenishment valve is adjusted based on the pure water spray temperature and the rinsing target temperature. The rinsing completion unit is used to collect the second drainage conductivity. When the timer reaches the fourth set duration and the second drainage conductivity is lower than the third conductivity threshold, a rinsing completion signal is generated.

4. The nursing instrument disinfection system according to claim 3, characterized in that, The valve opening calculation unit is specifically used for: Collect the pure water spray temperature and determine whether the pure water spray temperature exceeds the upper limit of the third temperature range; When the pure water spray temperature exceeds the upper limit of the third temperature range, calculate the cooling temperature difference between the pure water spray temperature and the rinsing target temperature; Multiply the cooling temperature difference by the valve opening adjustment coefficient to obtain the valve opening increment, and increase the valve opening by adding cold water according to the valve opening increment.

5. The nursing instrument disinfection system according to claim 1, characterized in that, The heat disinfection control module also includes: The pressure regulating unit is used to shut off the pure water spray pump and open the steam sterilization valve according to the rinsing completion signal, and to fill the cleaning chamber with saturated steam at a set pressure through the steam pressure regulator. A temperature acquisition unit is used to acquire the temperature inside the cleaning chamber. When the temperature inside the cleaning chamber reaches the set disinfection temperature, the opening of the steam sterilization valve and the steam pressure are adjusted to stabilize the temperature inside the cleaning chamber in the fourth temperature range. The heat sterilization completion unit is used to calculate the sterilization equivalent time value based on the temperature inside the cleaning chamber and the set time increment. When the sterilization equivalent time value reaches the set sterilization threshold and the timer reaches the fifth set duration, a heat sterilization completion signal is generated.

6. The nursing instrument disinfection system according to claim 5, characterized in that, The temperature acquisition unit is specifically used for: Collect the temperature inside the cleaning chamber and determine whether the temperature inside the cleaning chamber has reached the set disinfection temperature. When the temperature inside the cleaning chamber reaches the set disinfection temperature, the opening of the steam sterilization valve is adjusted from the fully open state to the set maintenance opening state. The opening of the steam sterilization valve is adjusted according to the cleaning temperature deviation between the temperature inside the cleaning chamber and the median of the fourth temperature range. The steam pressure is adjusted to a set pressure range by the steam pressure regulator, so that the temperature inside the cleaning chamber is stably maintained in the fourth temperature range.

7. The nursing instrument disinfection system according to claim 1, characterized in that, The drying control module further includes: The hot air circulation unit is used to close the steam sterilization valve and simultaneously turn on the hot air circulation fan and the drying heater according to the heat disinfection completion signal, and to set the rotation speed and wind speed of the hot air circulation fan; The power control unit is used to collect the circulating air temperature and calculate the drying temperature deviation between the circulating air temperature and the drying target temperature. When the drying temperature deviation is within the first drying deviation range, it outputs the power of the first drying heater; when the drying temperature deviation is within the second drying deviation range, it outputs the power of the second drying heater; and when the drying temperature deviation is within the third drying deviation range, it outputs the power of the third drying heater. The disinfection completion unit is used to collect the surface relative humidity of the nursing instruments. When the timer reaches the sixth set duration and the surface relative humidity is lower than the set humidity threshold, the entire disinfection process is completed.

8. The nursing instrument disinfection system according to claim 7, characterized in that, The power control unit is specifically used for: Collect the circulating air temperature and calculate the drying temperature deviation between the target drying temperature and the circulating air temperature; When the drying temperature deviation is within the first drying deviation range, the first drying heater power is output for full-power heating; when the drying temperature deviation is within the second drying deviation range, the second drying heater power is output for medium-power heating; and when the drying temperature deviation is within the third drying deviation range, the third drying heater power is output for low-power maintenance.

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