A medical waste high-temperature steam permeation control treatment method

Abstract

The application provides a medical waste high-temperature steam permeation control treatment method, relates to the field of harmless treatment of medical waste, and comprises the following steps: loading medical waste in a treatment cabin and performing vacuumization on the treatment cabin, so that the pressure in the treatment cabin is reduced to a first target negative pressure value; saturated steam is injected into the treatment cabin, and a multi-stage gradient pressure increasing program is performed, so that the working pressure of the treatment cabin is maintained in a slightly positive pressure state in which a slightly positive pressure offset of the target sterilization pressure is increased; the target sterilization temperature in the slightly positive pressure state is maintained to perform basic heat penetration, and the treatment cabin is subjected to periodic pressure pulse cycle treatment; the target sterilization temperature in the slightly positive pressure state is maintained to perform final sterilization, the treatment cabin is subjected to vacuum drying and air injection into the treatment cabin for cooling, and the treatment cabin is opened to unload the treatment product.

Description

Technical Field

[0001] This application relates to the field of harmless treatment of medical waste, and more specifically, to a method for controlling the high-temperature vapor permeation treatment of medical waste. Background Technology

[0002] In the field of medical waste harmless treatment, high-temperature steam sterilization technology has become the mainstream technology for treating infectious waste due to its environmental friendliness, operational safety, and controllable cost. The core of this technology is to utilize the latent heat of saturated steam to denature microbial proteins, thereby achieving sterilization. To improve steam permeation efficiency, pre-vacuum or pulsed vacuum technology is commonly used as the standard process. This involves first evacuating the treatment chamber to remove most of the air, then injecting saturated steam and maintaining it at a constant temperature and pressure for a sufficient time to ensure sterilization effectiveness. This technical approach effectively improves the initial distribution of steam and heat transfer efficiency by creating an initial negative pressure environment.

[0003] Existing technologies still face challenges in achieving uniform permeation and efficiency when processing medical waste with complex structures, uneven density, or strong hydrophobicity. Conventional single-stage vacuum followed by constant pressure and temperature treatment has limitations: firstly, the initial negative pressure is insufficient to completely displace residual gases deeply embedded in the dense waste core or encapsulated in hydrophobic materials, easily leading to localized gas barriers later; secondly, during the constant pressure and temperature stage, vapor permeation mainly relies on diffusion, and the driving force decreases as treatment progresses, easily creating cold spots with insufficient permeation in areas with high thermal resistance. Extending the holding time can partially improve this problem, but it increases the processing cycle and energy consumption.

[0004] Therefore, there is an urgent need for a high-temperature vapor permeation control treatment method for medical waste. Summary of the Invention

[0005] To address the aforementioned technical problems, this application is proposed. The first aspect of this application provides a method for controlling the high-temperature vapor permeation treatment of medical waste, comprising the following specific steps: loading medical waste into a treatment chamber and evacuating the treatment chamber to reduce the pressure inside the treatment chamber to a first target negative pressure value;

[0006] Saturated steam is injected into the processing chamber, and a multi-stage gradient pressurization procedure is executed to maintain the working pressure of the processing chamber at a slightly positive pressure state with a slight positive pressure offset on the basis of the target sterilization pressure.

[0007] Maintaining the target sterilization temperature within the processing chamber under the micro-positive pressure state allows for basic heat penetration, and periodic pressure pulse cycling is performed on the processing chamber.

[0008] The target sterilization temperature is maintained under the micro-positive pressure state for final sterilization. The processing chamber is then vacuum dried and air is injected into it for cooling. Finally, the processing chamber is opened to unload the processed product.

[0009] Preferably, the process of evacuating the processing chamber includes,

[0010] The medical waste is classified and treated, and then sent into a high-temperature steam treatment chamber, which is in a closed state.

[0011] The high-temperature steam treatment chamber, which is in a sealed state, is evacuated. The evacuation operation of the vacuum pump causes the internal pressure of the high-temperature steam treatment chamber to drop from atmospheric pressure.

[0012] Preferably, reducing the pressure inside the treatment chamber to a first target negative pressure value includes,

[0013] Set the first target negative pressure value in the parameter setting interface of the central controller, and measure the real-time pressure value in the processing chamber.

[0014] The first target negative pressure value is compared with the real-time pressure value. When the comparison result shows that the real-time pressure value in the processing chamber is less than or equal to the first target negative pressure value, a vacuum pump shutdown command is generated. The vacuum pump executes the vacuum pump shutdown command and stops pumping air into the processing chamber.

[0015] Preferably, the micro-positive pressure state includes,

[0016] When the steam regulating valve is opened, saturated steam flows into the processing chamber through the steam pipe. The inflow of saturated steam causes the pressure inside the processing chamber to rise from the first target negative pressure value.

[0017] The pressure sensor monitors the real-time pressure value during the pressure rise process inside the processing chamber and compares the real-time pressure value inside the processing chamber with the preset first-level intermediate pressure value.

[0018] When the real-time pressure value inside the processing chamber reaches the first-level intermediate pressure value, adjust the opening of the steam regulating valve to maintain the pressure inside the processing chamber at the first-level intermediate pressure value.

[0019] The pressure inside the treatment chamber is maintained at the first-stage intermediate pressure value for a first time. After the first time ends, the opening of the steam regulating valve is increased to allow the pressure inside the treatment chamber to continue to rise.

[0020] The real-time pressure value inside the processing chamber is compared with the preset second-stage intermediate pressure value. When the real-time pressure value inside the processing chamber reaches the second-stage intermediate pressure value, the opening of the steam regulating valve is adjusted again to maintain the second-stage intermediate pressure value.

[0021] The pressure inside the treatment chamber is maintained at the second-stage intermediate pressure value for a second time. After the second time ends, the central controller continues to increase the opening of the steam regulating valve, so that the pressure inside the treatment chamber moves toward the target sterilization pressure.

[0022] When the real-time pressure value inside the treatment chamber reaches the target sterilization pressure, the pressure control setpoint is adjusted to the sum of the target sterilization pressure and the micro-positive pressure offset.

[0023] Based on the adjusted pressure control setpoint, the working pressure of the processing chamber is maintained in the slightly positive pressure state by dynamically adjusting the opening of the steam regulating valve.

[0024] Preferably, the basic thermal penetration includes,

[0025] Monitor the pressure inside the treatment chamber under a slightly positive pressure state, and compare the pressure value inside the treatment chamber under the slightly positive pressure state with the set pressure control setpoint.

[0026] Based on the comparison results, a control signal is generated for the steam regulating valve. The steam regulating valve adjusts its opening according to the control signal to control the injection amount of saturated steam.

[0027] The amount of saturated steam injected maintains the temperature inside the treatment chamber at the target sterilization temperature.

[0028] Temperature sensors monitor and maintain the temperature inside the processing chamber at the target sterilization temperature. Once the temperature inside the processing chamber is confirmed to have reached the target sterilization temperature, the timing of the basic heat penetration phase is started, and the basic heat penetration time is accumulated. When the accumulated basic heat penetration time reaches the preset value, the basic heat penetration phase ends.

[0029] Preferably, the periodic pressure pulse cycle processing includes,

[0030] The central controller performs a rapid pressurization operation, raising the pressure inside the processing chamber from a slightly positive pressure state to the peak pressure. After reaching the peak pressure, it performs a high-pressure maintenance operation to maintain the pressure inside the processing chamber at the peak pressure for a continuous high-pressure maintenance time.

[0031] After the high-pressure maintenance period ends, a rapid depressurization operation is performed to reduce the pressure inside the treatment chamber from the peak pressure to the trough pressure.

[0032] After the valley pressure is reached, a pressure recovery operation is performed to restore the pressure inside the treatment chamber from the valley pressure to a slightly positive pressure state.

[0033] The central controller records the completed pressurization, maintenance, depressurization and recovery operations as pressure pulse cycles, and repeats them a preset number of times before the periodic pressure pulse cycle processing ends.

[0034] Preferably, the final sterilization includes,

[0035] Based on the pressure control setpoint under slight positive pressure, adjust the opening of the steam regulating valve to maintain a slight positive pressure state in the processing chamber.

[0036] Adjust the opening of the steam regulating valve to stabilize the temperature inside the processing chamber at the target sterilization temperature. After confirming that the temperature inside the processing chamber has reached the target sterilization temperature, start the cumulative timing of the final sterilization time.

[0037] During the cumulative final sterilization time, the valves are adjusted according to the pressure set point to maintain a slightly positive pressure in the processing chamber and the target sterilization temperature.

[0038] When the cumulative final sterilization time reaches the preset duration, the final sterilization process ends.

[0039] Preferably, the discharged processing products include,

[0040] The central controller starts the vacuum drying program, which uses a vacuum pump to evacuate the processing chamber to reduce the humidity inside. Once the vacuum drying program reaches the preset dryness level, the vacuum pump is turned off and the air intake valve is opened to inject filtered clean air into the processing chamber.

[0041] Filtered clean air is injected into the processing chamber to restore the pressure inside the processing chamber to normal pressure, and the temperature inside the processing chamber is reduced by the cooling unit.

[0042] When the temperature inside the processing chamber drops to the safe unloading temperature, the door lock is released and the processing chamber door is allowed to be opened to unload the processed products from the processing chamber.

[0043] Preferably, the multi-stage gradient pressurization procedure includes two pressurization steps with pressure holding platforms, wherein the target pressure of the first pressurization step is lower than the target pressure of the second pressurization step, and in the pressure pulse cycle processing, the pressure drop rate of the rapid depressurization operation is greater than the pressure rise rate of the rapid pressurization operation, and the valley pressure is lower than the target sterilization pressure.

[0044] A second aspect of the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, characterized in that: when the processor executes the computer program, it implements the steps of the above-described method for controlling the high-temperature vapor permeation treatment of medical waste.

[0045] Compared with existing technologies, the high-temperature vapor permeation control treatment method for medical waste provided in this application combines multi-stage gradient pressurization to establish micro-positive pressure with periodic pressure pulse circulation, realizing active dynamic control of the permeation process. The multi-stage gradient pressurization program replaces residual air deep inside the waste through staged pressure holding platforms, creating a better initial environment for vapor permeation. The maintained micro-positive pressure state continuously inhibits air backflow, ensuring the purity of the vapor medium. The periodic pressure pulse, especially its rapid depressurization stage, induces a flash evaporation effect inside the waste fibers, generating micro-vapor shock waves from the inside out, powerfully clearing capillary channels and continuously disrupting the heat transfer balance. The synergistic mechanism of gradient replacement foundation and pulse dynamic cell disruption solves the problem of the attenuation of permeation driving force in the later stage of traditional constant pressure treatment, improving the penetration depth and uniformity of steam into complex waste structures. Thus, while ensuring thorough sterilization, it provides a practical and feasible process path for shortening the treatment cycle and reducing energy consumption. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0047] Figure 1 This is a flowchart of a high-temperature vapor permeation control treatment method for medical waste according to an embodiment of this application. Detailed Implementation

[0048] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0049] As mentioned in the background section, existing technologies still face challenges in achieving uniformity and efficiency in the treatment of medical waste with complex structures, uneven density, or strong hydrophobicity. Conventional single-stage vacuum followed by constant pressure and temperature treatment has limitations: firstly, the initial negative pressure is insufficient to completely displace residual gases deeply embedded in the dense waste core or encapsulated in hydrophobic materials, easily leading to localized gas barriers later; secondly, during the constant pressure and temperature stage, vapor permeation mainly relies on diffusion, and the driving force diminishes as treatment progresses, easily creating cold spots with insufficient permeation in areas with high thermal resistance. Extending the holding time can partially improve this problem, but it increases the treatment cycle and energy consumption.

[0050] Figure 1The flowchart below shows a method for controlling the high-temperature vapor permeation treatment of medical waste according to an embodiment of this application, including the following specific steps:

[0051] S1: Load medical waste into the treatment chamber and evacuate the treatment chamber to reduce the pressure inside the treatment chamber to the first target negative pressure value.

[0052] In step S1, the medical waste is classified and treated. The classified and treated medical waste is sent into a high-temperature steam treatment chamber, which is in a closed state.

[0053] Furthermore, the medical waste to be processed is manually sorted to clearly distinguish infectious waste, sharps waste, and other categories suitable for high-temperature steam treatment, and items that clearly do not meet the treatment requirements, such as radioactive waste, chemical waste, and sealed pressure vessels, are removed. After sorting, the operators loosely and evenly load the treatable medical waste into a dedicated porous sterilization cart or sterilization basket, ensuring that the loading amount does not exceed the rated volume of the container to ensure a basic circulation channel for subsequent steam. After loading, the fully loaded sterilization cart is smoothly pushed into the interior of the high-temperature steam treatment chamber along the track, and the chamber door is manually closed and rotated to lock it, confirming that the door seal is intact and the locking device is in place, so that the high-temperature steam treatment chamber forms a sealed space isolated from the external environment.

[0054] The high-temperature steam treatment chamber, which is in a sealed state, is evacuated. The evacuation operation of the vacuum pump causes the internal pressure of the high-temperature steam treatment chamber to drop from atmospheric pressure.

[0055] Furthermore, after confirming that the hatch of the high-temperature steam treatment chamber is sealed, the operator manually triggers the start command of the vacuuming program through the control panel or the start interface of the central controller. This command powers and starts the vacuum pump connected to the exhaust port pipe of the high-temperature steam treatment chamber. The operation of the vacuum pump continuously and powerfully extracts gas from the sealed interior space of the high-temperature steam treatment chamber through the exhaust pipe. As the vacuum pump continues to work, gas molecules inside the high-temperature steam treatment chamber are continuously removed, causing the gas pressure inside the high-temperature steam treatment chamber to show a continuous and stable downward trend from the initial local atmospheric pressure, i.e., normal pressure. This process continues until the preset termination condition is reached.

[0056] Set the first target negative pressure value in the parameter setting interface of the central controller, and measure the real-time pressure value in the processing chamber.

[0057] Furthermore, before the processing procedure begins or when the vacuuming procedure is initiated, the operator uses the human-machine interface on the central controller to find the pressure control related options in the parameter setting menu and manually inputs a specific value as the first target negative pressure value, such as -0.085 MPa. At the same time, the pressure sensor installed on and connected to the high-temperature steam processing chamber begins to work. The sensitive element in the pressure sensor senses the change in gas pressure inside the chamber and converts it into a continuous electrical signal. This electrical signal is transmitted and converted to form a real-time pressure value representing the current gas pressure inside the processing chamber. This real-time pressure value is continuously transmitted to the data acquisition port of the central controller in the form of a digital or analog signal.

[0058] The first target negative pressure value is compared with the real-time pressure value. When the comparison result shows that the real-time pressure value in the processing chamber is less than or equal to the first target negative pressure value, a vacuum pump shutdown command is generated. The vacuum pump executes the vacuum pump shutdown command and stops pumping air into the processing chamber.

[0059] Furthermore, the central controller's processing unit continuously reads the real-time pressure value inside the processing chamber transmitted from the pressure sensor and performs a cyclic comparison operation with the first target negative pressure value pre-stored in memory. The comparison logic determines whether the real-time pressure value is less than or equal to the first target negative pressure value. When a comparison result shows that the real-time pressure value has reached or fallen below the first target negative pressure value, the central controller's logic judgment unit immediately generates a specific vacuum pump shutdown command digital signal. This vacuum pump shutdown command is sent to the electrical control circuit that drives the vacuum pump through the control line. Upon receiving the vacuum pump shutdown command, the vacuum pump's electrical control circuit immediately cuts off the power supply to the vacuum pump motor. The vacuum pump stops rotating due to power failure, terminating the evacuation operation of the high-temperature steam processing chamber. At this time, the internal pressure of the high-temperature steam processing chamber stabilizes near the first target negative pressure value.

[0060] S2: Inject saturated steam into the processing chamber and execute a multi-stage gradient pressurization procedure to maintain the working pressure of the processing chamber at a slightly positive pressure state with an additional slight positive pressure offset on top of the target sterilization pressure.

[0061] In step S2, the steam regulating valve is opened, and saturated steam flows into the treatment chamber through the steam pipeline. The inflow of saturated steam causes the pressure in the treatment chamber to rise from the first target negative pressure value.

[0062] Furthermore, after the vacuum pump stops running and the pressure inside the processing chamber stabilizes at the first target negative pressure value, the central controller sends an opening command to the steam regulating valve installed on the saturated steam main pipeline. Under the action of the drive mechanism, the valve core of the steam regulating valve moves from the closed position to a preset initial opening position, allowing saturated steam from the boiler or steam generator to flow into the internal space of the processing chamber through the steam pipeline and the steam regulating valve. The continuous inflow of saturated steam replenishes the gas in the processing chamber and releases heat, causing the pressure inside the processing chamber to gradually increase from the first target negative pressure value.

[0063] The pressure sensor monitors the real-time pressure value during the pressure rise process inside the processing chamber and compares the real-time pressure value inside the processing chamber with the preset first-level intermediate pressure value.

[0064] Furthermore, the pressure sensor installed on the treatment chamber works continuously during the saturated steam injection process. Its sensitive element senses the dynamic changes in the pressure inside the chamber and generates a continuously changing electrical signal. After processing, this electrical signal forms a real-time pressure value inside the treatment chamber and is transmitted to the central controller. The central controller stores a first-level intermediate pressure value that has been pre-input by the operator on the parameter setting interface. Under program control, the processing unit of the central controller periodically performs a comparison operation, which reads the current real-time pressure value inside the treatment chamber and compares it with the stored first-level intermediate pressure value to determine whether the real-time pressure value has reached or exceeded the first-level intermediate pressure value.

[0065] When the real-time pressure value inside the processing chamber reaches the first-stage intermediate pressure value, adjust the opening of the steam regulating valve to maintain the pressure inside the processing chamber at the first-stage intermediate pressure value.

[0066] Furthermore, when the comparison operation performed by the central controller shows that the real-time pressure value inside the processing chamber is equal to or greater than the preset first-level intermediate pressure value, the central controller determines that the first-level pressure increase target has been reached and then switches to the pressure maintenance control mode. In this mode, the central controller calculates the corresponding control quantity based on the deviation between the real-time pressure value and the first-level intermediate pressure value using the built-in proportional-integral-derivative control algorithm, and converts this control quantity into a drive signal to send to the steam regulating valve, driving the valve core of the steam regulating valve to adjust the opening. Specifically, if the real-time pressure value is higher than the first-level intermediate pressure value, the opening is reduced, and vice versa. Through this dynamic adjustment, the pressure inside the processing chamber is stabilized near the first-level intermediate pressure value.

[0067] The pressure inside the treatment chamber is maintained at the first-stage intermediate pressure value for a period of time. After the first period ends, the opening of the steam regulating valve is increased to allow the pressure inside the treatment chamber to continue to rise.

[0068] Furthermore, after the pressure inside the processing chamber is successfully stabilized at the first-stage intermediate pressure value, the central controller starts a timer to accumulate the first time, which is a duration parameter preset by the operator. During the accumulation of the first time, the central controller continuously performs the aforementioned pressure maintenance control to counteract minor pressure fluctuations. When the timer accumulates to the preset first time endpoint, the central controller ends the first-stage pressure maintenance phase and issues a command to change the pressure control target. Specifically, this is manifested by sending a step-like or ramp-like command to the steam regulating valve to increase its opening. In response to this command, the steam regulating valve increases its valve core opening, allowing more saturated steam to flow into the processing chamber per unit time, thereby causing the pressure inside the processing chamber to move away from the first-stage intermediate pressure value and begin to rise to a higher pressure level.

[0069] The real-time pressure value inside the treatment chamber is compared with the preset second-stage intermediate pressure value. When the real-time pressure value inside the treatment chamber reaches the second-stage intermediate pressure value, the opening of the steam regulating valve is adjusted again to maintain the second-stage intermediate pressure value.

[0070] Furthermore, as the steam regulating valve opening increases and the pressure inside the processing chamber continues to rise from the first-stage intermediate pressure value, the pressure sensor continuously provides the real-time pressure value inside the processing chamber. The central controller continuously performs a new comparison operation, that is, comparing the real-time pressure value with another pre-stored parameter whose value is greater than the first-stage intermediate pressure value, namely the second-stage intermediate pressure value. When the comparison operation result shows that the real-time pressure value inside the processing chamber reaches or exceeds the preset second-stage intermediate pressure value, the central controller switches the control mode again, from the pressure boosting mode to the pressure maintenance control mode for the second-stage intermediate pressure value, and again uses the proportional-integral-derivative control algorithm to generate a control signal based on the deviation between the real-time pressure value and the second-stage intermediate pressure value, dynamically adjusting the opening of the steam regulating valve to accurately stabilize the pressure inside the processing chamber at the second-stage intermediate pressure value.

[0071] The pressure inside the treatment chamber is maintained at the second-stage intermediate pressure value for a second time. After the second time ends, the central controller continues to increase the opening of the steam regulating valve, so that the pressure inside the treatment chamber moves towards the target sterilization pressure.

[0072] Furthermore, after successfully stabilizing the pressure inside the processing chamber at the second-stage intermediate pressure value, the central controller starts another timer to accumulate a second time. This second time is a pre-set pressure holding duration parameter different from the first time. Throughout the accumulation of the second time, the central controller continuously performs pressure maintenance control to ensure pressure stability. When the second time accumulation ends, the central controller ends the second-stage pressure holding phase and issues another command to increase the opening of the steam regulating valve. The steam regulating valve responds to the command by further increasing its opening, thereby increasing the injection flow rate of saturated steam again. This drives the pressure inside the processing chamber to continue rising from the second-stage intermediate pressure value level, moving towards the next higher pressure set point, i.e., the target sterilization pressure.

[0073] When the real-time pressure value inside the treatment chamber reaches the target sterilization pressure, the pressure control setpoint is adjusted to the sum of the target sterilization pressure and the micro-positive pressure offset.

[0074] Furthermore, as the steam regulating valve opening increases and the pressure inside the processing chamber continues to rise, the pressure sensor continuously monitors and feeds back the real-time pressure value to the central controller. The central controller compares this value with the preset target sterilization pressure. When the real-time pressure reaches the target sterilization pressure, the central controller performs a crucial parameter reset operation. This operation does not change the instantaneous opening of the steam regulating valve, but modifies the internal reference value used for pressure closed-loop control, i.e., the pressure control setpoint, from the current target sterilization pressure value to another calculated value. This calculated value is equal to the sum of the target sterilization pressure value and another preset small positive pressure value, i.e., the micro-positive pressure offset. Thus, the goal of pressure control changes from simply maintaining the target sterilization pressure to maintaining a new pressure level that is slightly higher than the target sterilization pressure.

[0075] Based on the adjusted pressure control setpoint, the working pressure of the processing chamber is maintained in the slightly positive pressure state by dynamically adjusting the opening of the steam regulating valve.

[0076] Furthermore, after the pressure control setpoint is adjusted to the sum of the target sterilization pressure and the micro-positive pressure offset, the pressure closed-loop control loop of the central controller operates based on this new setpoint. This control loop continuously receives the real-time pressure value of the processing chamber from the pressure sensor and obtains the deviation between it and the new pressure control setpoint. Through the proportional-integral-derivative control algorithm, the required steam regulating valve opening adjustment amount is obtained and converted into a drive signal sent to the actuator of the steam regulating valve. The valve core position of the steam regulating valve is dynamically adjusted according to the drive signal, thereby precisely controlling the saturated steam flow into the processing chamber to compensate for pressure loss caused by condensation, leakage, and other factors. The working pressure of the processing chamber is stabilized within a range of small fluctuations around the new pressure control setpoint (i.e., the sum of the target sterilization pressure and the micro-positive pressure offset). This stable pressure state is defined as the micro-positive pressure state.

[0077] S3: Maintain the target sterilization temperature in the processing chamber under the micro-positive pressure state to perform basic heat penetration, and perform periodic pressure pulse cycle treatment on the processing chamber.

[0078] In step S3, the pressure inside the processing chamber under a slightly positive pressure state is monitored, and the pressure value inside the processing chamber under the slightly positive pressure state is compared with the set pressure control set point.

[0079] Furthermore, the pressure sensor continuously senses and measures the gas pressure inside the processing chamber under a slightly positive pressure state, and converts the sensed pressure physical quantity into a continuous electrical signal. After processing, it forms the pressure value inside the processing chamber under a slightly positive pressure state and transmits it to the central controller in digital form. The central controller performs a reading operation once in each control cycle according to a fixed control cycle, that is, reads the latest pressure value inside the processing chamber under a slightly positive pressure state, and obtains a difference signal reflecting the deviation between the two.

[0080] Based on the comparison results, a control signal is generated for the steam regulating valve. The steam regulating valve adjusts its opening according to the control signal to control the injection amount of saturated steam.

[0081] Furthermore, after receiving the difference signal, the central controller inputs it into its internally preset proportional-integral-derivative (PID) control algorithm calculation module. This module calculates a control quantity in real time to correct the opening of the steam regulating valve based on the magnitude and sign of the difference signal, following the combination rules of proportional, integral, and derivative terms. The central controller converts this control quantity into a corresponding analog voltage signal or digital pulse signal, which becomes the control signal for the steam regulating valve. This control signal is transmitted via cable to the electric positioner or servo drive of the steam regulating valve. The electric positioner or servo drive analyzes the received control signal and drives the valve's actuator to precisely adjust the valve core's opening position relative to the valve seat. The change in valve core opening directly alters the flow cross-sectional area of ​​saturated steam through the valve, thereby achieving continuous and precise control over the injection volume of saturated steam into the processing chamber per unit time.

[0082] Specifically, the expression is:

[0083] ;

[0084] in, In order to be in The amount of control at any given moment This is the proportional gain coefficient. In order to be in The deviation signal at time, In order to be in The integral gain coefficient at time t. For a moment, This is a historical deviation signal. For an integral infinitesimal element, The differential gain coefficient, The rate of change of deviation

[0085] The amount of saturated steam injected maintains the temperature inside the treatment chamber at the target sterilization temperature.

[0086] Furthermore, the precisely controlled injection of saturated steam continuously flows into the treatment chamber through steam pipes. This newly injected saturated steam carries heat into the interior space of the treatment chamber and mixes and exchanges heat with the existing medium inside the chamber. When the saturated steam comes into contact with the cooler interior wall of the treatment chamber and the surface of the loaded medical waste, it will condense and release its latent heat of vaporization. This process continues until the heat absorbed by the interior space of the treatment chamber and the medical waste reaches a dynamic balance with the heat lost through the chamber wall. In this balanced state, the heat input maintained by the continuous condensation and heat release of the saturated steam just compensates for the heat loss of the system, so that the average temperature of all areas in the treatment chamber is stabilized at the target sterilization temperature value preset by the operator.

[0087] Temperature sensors monitor and maintain the temperature inside the processing chamber at the target sterilization temperature. Once the temperature inside the processing chamber is confirmed to have reached the target sterilization temperature, the timing of the basic heat penetration phase is started, and the basic heat penetration time is accumulated. When the accumulated basic heat penetration time reaches the preset value, the basic heat penetration phase ends.

[0088] Furthermore, one or more temperature sensors installed at representative locations within the processing chamber continuously measure the ambient temperature inside the chamber, maintaining it at the target sterilization temperature, and transmit the temperature readings to the central controller in real time. The central controller has a preset temperature judgment condition, which determines whether the received temperature sensor readings have continuously exceeded the preset lower limit of the target sterilization temperature for a set stable period of time. When this condition is met, the central controller confirms that the temperature inside the processing chamber has reached the target sterilization temperature. The central controller then calls the timing function module to start a dedicated timer called the basic heat penetration stage. This timer accumulates time forward from zero. The central controller also stores a preset value for the basic heat penetration time set by the operator. The timer will continue to accumulate until the accumulated basic heat penetration time value equals the preset value. At this point, the central controller determines that the basic heat penetration stage has ended and stops the timer from accumulating.

[0089] The central controller performs a rapid pressurization operation, raising the pressure inside the treatment chamber from a slightly positive pressure state to the peak pressure. After reaching the peak pressure, it performs a high-pressure maintenance operation to maintain the pressure inside the treatment chamber at the peak pressure for a continuous high-pressure maintenance time.

[0090] Furthermore, after the basic heat penetration stage, the central controller initiates the pressure pulse cycle processing program. The program first enters the rapid pressurization operation stage. In this stage, the central controller sends a command to the steam regulating valve to increase the opening by a large margin rapidly. The steam regulating valve responds to this command, and the valve core moves to a larger opening position in a short time, causing a sharp increase in the injection flow of saturated steam. The pressure inside the processing chamber is thus rapidly pushed up from the current slightly positive pressure state. The pressure sensor continuously monitors this pressure rise process and feeds back the real-time pressure value to the central controller. The central controller stores a preset peak pressure value. When the real-time pressure value is fed back... When the pressure reaches the peak value, the central controller determines that the rapid pressurization operation is complete and immediately switches to the high-pressure maintenance operation stage. The central controller temporarily switches the pressure control target to this peak pressure value and uses the proportional-integral-derivative control algorithm again to counteract the natural pressure decay caused by factors such as system volume and condensation by dynamically adjusting the small opening changes of the steam regulating valve. This ensures that the pressure in the processing chamber is accurately stabilized near the peak pressure value. The duration of this stable maintenance is determined by another preset parameter inside the central controller, namely the high-pressure maintenance time. An independent timer counts the time until the accumulated time reaches the high-pressure maintenance time.

[0091] After the high-pressure maintenance period ends, a rapid depressurization operation is performed to reduce the pressure inside the treatment chamber from the peak pressure to the trough pressure.

[0092] Furthermore, once the cumulative time of the high-pressure maintenance phase reaches the preset high-pressure maintenance time, the central controller ends the high-pressure maintenance phase and immediately initiates a rapid pressure relief operation. The central controller sends a command to the exhaust valve connected to the exhaust pipe of the processing chamber to fully open or significantly open, and at the same time sends a command to the steam regulating valve to close or significantly reduce its opening. The rapid opening of the exhaust valve connects the internal space of the processing chamber to the outside or a low-pressure relief pipeline. High-pressure steam is rapidly discharged under the pressure difference drive. The reduction of the opening of the steam regulating valve significantly reduces the replenishment of new steam. The combined effect of the two causes the pressure in the processing chamber to drop rapidly from the peak pressure. The pressure sensor monitors this pressure drop process. The central controller stores a preset valley pressure value. When the real-time pressure value fed back drops to the valley pressure value, the central controller determines that the rapid pressure relief operation is completed.

[0093] After the valley pressure is reached, a pressure recovery operation is performed to restore the pressure inside the treatment chamber from the valley pressure to a slightly positive pressure state.

[0094] Furthermore, at the moment the rapid depressurization operation is completed and the pressure inside the treatment chamber reaches the valley pressure, the central controller initiates the pressure recovery operation. In this operation, the central controller first sends a closing command to the exhaust valve to cut off the exhaust passage. At the same time, it resets the pressure control target to the pressure control setpoint corresponding to the original slightly positive pressure state. Based on the large deviation between the current valley pressure and the target pressure control setpoint, the central controller obtains a larger initial opening degree that the steam regulating valve needs to reach, and sends a corresponding large opening command to the steam regulating valve. The steam regulating valve opens rapidly, and saturated steam is injected back into the treatment chamber at a larger flow rate, pushing the pressure to rise rapidly from the valley pressure. When the pressure approaches the target pressure control setpoint, the central controller re-activates proportional-integral-derivative closed-loop control to finely adjust the opening degree of the steam regulating valve, ultimately restoring the pressure inside the treatment chamber to a slightly positive pressure state smoothly and accurately.

[0095] The central controller records the completed pressurization, maintenance, depressurization and recovery operations as pressure pulse cycles, and repeats them a preset number of times before the periodic pressure pulse cycle processing ends.

[0096] Furthermore, the central controller is equipped with a pressure pulse cycle counter. After each complete execution of the series of operations—starting with a rapid pressurization operation, followed by a high-pressure maintenance operation, a rapid depressurization operation, and then a pressure recovery operation to stabilize the pressure back to a slightly positive pressure state—the central controller considers a complete pressure pulse cycle to be finished. The central controller increments the current value of the pressure pulse cycle counter by one. The central controller then compares the value of the pressure pulse cycle counter with a preset value for the total number of cycles, which is set by the operator. If the value of the pressure pulse cycle counter is less than the preset value, the central controller automatically starts the next pressure pulse cycle, starting again from the rapid pressurization operation and repeating the above process. If the value of the pressure pulse cycle counter is equal to the preset value, the central controller determines that the preset number of cycles has been completed and does not start a new cycle. The periodic pressure pulse cycle processing program ends here.

[0097] S4: Maintain the target sterilization temperature under the micro-positive pressure state for final sterilization, vacuum dry the processing chamber and inject air into the processing chamber for cooling, and open the processing chamber to unload the processed product.

[0098] In step S4, the opening of the steam regulating valve is adjusted according to the pressure control set point of the micro-positive pressure state to maintain the micro-positive pressure state in the processing chamber.

[0099] Furthermore, the pressure sensor continuously monitors the real-time pressure value inside the processing chamber and transmits it to the central controller. The central controller periodically compares this real-time pressure value with the internally stored pressure control setpoint for a slightly positive pressure state, calculates the difference between the two, and inputs this difference into a preset proportional-integral-derivative (PID) control algorithm to calculate the drive signal required to control the steam regulating valve. This drive signal is sent to the servo unit of the steam regulating valve. The servo unit of the steam regulating valve precisely adjusts the axial position of the valve core according to the drive signal, thereby changing the valve opening. The change in valve opening directly regulates the saturated steam flow into the processing chamber. Through this deviation-based closed-loop feedback control, pressure losses caused by steam condensation, minor leaks, etc., are continuously compensated, ultimately stabilizing the pressure inside the processing chamber precisely within the range specified by the pressure control setpoint for a slightly positive pressure state, thus maintaining the slightly positive pressure state.

[0100] Specifically, the expression is:

[0101]

[0102] in, In order to be in Instantaneous pressure deviation at any given moment In order to be in The pressure set point at any time, In order to be in The measured pressure value at any given time;

[0103] Adjust the opening of the steam regulating valve to stabilize the temperature inside the processing chamber at the target sterilization temperature. After confirming that the temperature inside the processing chamber has reached the target sterilization temperature, start the cumulative timing of the final sterilization time.

[0104] Furthermore, the amount of saturated steam injected, controlled by adjusting the opening of the steam regulating valve, is the main heat source for maintaining the thermal balance inside the processing chamber. The newly injected high-temperature saturated steam condenses and releases latent heat of vaporization inside the processing chamber. This heat input continuously compensates for the heat dissipation loss of the system, making the overall temperature of the internal space of the processing chamber and the internal medical waste tend to stabilize. Temperature sensors installed at multiple representative locations inside the processing chamber continuously monitor this temperature and transmit the temperature readings to the central controller in real time. The central controller has a temperature target criterion, which determines whether the readings of all key temperature measuring points are consistently higher than the preset target sterilization lower limit and remain stable. When this criterion is met, the central controller confirms that the temperature inside the processing chamber has reached the target sterilization temperature. The central controller activates an independent final sterilization stage timer, which accumulates time from zero, marking the official start of the final sterilization stage.

[0105] During the cumulative final sterilization time, the valves are adjusted according to the pressure set point to maintain a slightly positive pressure state and target sterilization temperature in the processing chamber.

[0106] Furthermore, after the timer starts and begins accumulating time during the final sterilization stage, the entire sterilization process enters a relatively long steady-state heat preservation period. During this heat preservation period, to ensure the sterilization effect, two core parameters must be maintained simultaneously: the slightly positive pressure state inside the processing chamber and the target sterilization temperature. The central controller achieves this by executing two sets of closed-loop control logic in parallel. The first set of logic continuously adjusts the opening of the steam regulating valve according to the pressure control setpoint of the slightly positive pressure state to counteract pressure fluctuations. The second set of logic indirectly depends on the first set of logic because the saturated steam injection amount controlled by the opening of the steam regulating valve is the main means of maintaining the temperature. The continuous condensation and heat release of the saturated steam ensures the heat supply. Although the temperature feedback continuously monitored by the temperature sensor does not directly control the steam regulating valve, it is used to monitor the status. Throughout the entire process of accumulating the final sterilization time, the central controller always ensures that the operation of adjusting the opening of the steam regulating valve according to the pressure setpoint continues and operates effectively, thereby indirectly and reliably maintaining the slightly positive pressure state inside the processing chamber and the target sterilization temperature within the required range.

[0107] When the cumulative final sterilization time reaches the preset duration, the final sterilization process ends.

[0108] Furthermore, the timer for the final sterilization stage continuously accumulates time after startup. The central controller stores a preset duration of the final sterilization time, which is pre-set by the process requirements. During the accumulation process, the current accumulated value of the timer is periodically compared with the preset duration of the final sterilization time. When the accumulated value of the timer is equal to or greater than the preset duration of the final sterilization time, the central controller determines that the continuous heat treatment time required for the final sterilization stage has been met and generates a stage end command. This command first stops the timer accumulation for the final sterilization stage and exits or suspends the active control cycle for maintaining a slight positive pressure and temperature, marking the formal end of the final sterilization process aimed at killing microorganisms. The processing flow then transitions to the subsequent cooling and unloading stages.

[0109] The central controller initiates the vacuum drying program, which uses a vacuum pump to evacuate the processing chamber to reduce the humidity inside. Once the vacuum drying program reaches the preset dryness level, the vacuum pump is turned off and the air intake valve is opened to inject filtered clean air into the processing chamber.

[0110] Furthermore, after the final sterilization stage, the central controller immediately initiates an independent vacuum drying program. This program first sends a start command to the vacuum pump connected to the processing chamber. The vacuum pump starts and evacuates the interior of the processing chamber. As the gas inside the chamber is extracted and the pressure decreases, the boiling point of the residual liquid water in the processing chamber decreases under low pressure, and it quickly evaporates into water vapor, which is then extracted by the vacuum pump, thereby effectively reducing the humidity inside the processing chamber. The rate of decrease in humidity or pressure in the processing chamber is indirectly monitored to determine the degree of dryness. The central controller has internally set judgment conditions related to the degree of dryness. For example, when the pressure inside the processing chamber drops to a very low specific value and remains there for a period of time, or when the cumulative running time of the vacuum pump reaches a preset value, it is considered that the vacuum drying program has reached the preset degree of dryness requirement. Once this condition is met, the central controller sends a stop command to the vacuum pump to stop its operation. At the same time, it sends an opening command to the air intake valve installed on the air intake pipe of the processing chamber. The air intake valve opens, and the outside air, after passing through a high-efficiency particulate air filter to remove dust and microorganisms, becomes filtered clean air and begins to flow into the processing chamber under the action of the internal and external pressure difference.

[0111] Filtered clean air is injected into the processing chamber to restore the pressure inside the chamber to atmospheric pressure, and the temperature inside the processing chamber is reduced by the cooling unit.

[0112] Furthermore, filtered clean air is continuously injected into the processing chamber through the open air intake valve. The pressure inside the processing chamber, which was reduced due to the previous vacuuming, gradually rises. The pressure sensor detects the pressure increase. When the pressure inside the processing chamber returns to a state that is basically equal to the atmospheric pressure of the external environment (i.e., normal pressure), the central controller sends a closing command to the air intake valve to stop the air intake, thereby stabilizing the chamber pressure at normal pressure. To accelerate the cooling of the high-temperature materials and environment inside the processing chamber, the central controller activates the cooling unit circulating in the jacket or internal coil of the processing chamber. After the cooling unit is activated, it drives the cooling water or cooling air to flow through the heat exchange surface in contact with the inner wall of the processing chamber. Through heat conduction, the heat contained in the internal space of the processing chamber and the medical waste is carried away, causing the temperature inside the processing chamber to begin to drop continuously and steadily.

[0113] When the temperature inside the processing chamber drops to the safe unloading temperature, the door lock is released and the processing chamber door is allowed to be opened to unload the processed products from the processing chamber.

[0114] Furthermore, during the operation of the cooling unit, temperature sensors continuously monitor the temperature drop within the processing chamber. The central controller stores a preset safe unloading temperature value, which is set to ensure that there is no risk of burns when operators come into contact with the materials and that the materials themselves are sufficiently cooled. When the temperature value inside the processing chamber fed back by the temperature sensor drops to or below this safe unloading temperature, the central controller determines that the cooling has met the safety requirements. The central controller then sends an unlocking command to the electronic or pneumatic lock on the processing chamber door to release the mechanical lock of the door. After the door lock is released, the central controller usually provides a visual or audible prompt on the operation panel, indicating that the door is now in a safe opening state. Upon receiving the prompt, the operator manually or via button control opens the processing chamber door and pulls the sterilization cart containing the sterilized and cooled medical waste out of the processing chamber along the track, thus completing the final step of unloading the processed product from the processing chamber.

[0115] Example 2

[0116] like Figure 1 As shown, a high-temperature vapor permeation controlled treatment method for medical waste includes: the multi-stage gradient pressurization process includes two pressurization steps with pressure holding platforms, wherein the target pressure of the first pressurization step is lower than the target pressure of the second pressurization step, and in the pressure pulse cycle processing, the pressure drop rate of the rapid depressurization operation is greater than the pressure rise rate of the rapid pressurization operation, and the valley pressure is lower than the target sterilization pressure.

[0117] Furthermore, the multi-stage gradient pressurization procedure includes a first pressurization step and a second pressurization step. Both pressurization steps include a pressure maintenance phase, i.e., a pressure holding plateau. The preset target pressure value of the first pressurization step is lower than the preset target pressure value of the second pressurization step. During steam injection, the pressure inside the treatment chamber is first increased and stabilized at the target pressure value of the first pressurization step for a first time, and then increased and stabilized at the target pressure value of the second pressurization step for a second time. The pressure pulse cycle processing includes rapid pressurization operation and rapid depressurization operation. The pressure decrease rate per unit time during the rapid depressurization operation is numerically greater than the pressure increase rate per unit time during the rapid pressurization operation. Furthermore, the lowest pressure point reached at the end of the rapid depressurization operation, i.e., the valley pressure, is numerically lower than the target sterilization pressure.

[0118] Example 3

[0119] According to one aspect of the present invention, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and executes the computer instructions, causing the computer device to perform the methods provided in the various alternative implementations described above.

[0120] In another aspect, the present invention also provides a computer-readable medium, which may be included in the electronic device described in the above embodiments; or it may exist independently and not assembled into the electronic device. The computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement the high-temperature vapor permeation controlled treatment method for medical waste described in the above embodiments.

[0121] It should be noted that although several modules or units of the device for performing actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0122] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, portable hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, touch terminal, or network device, etc.) to execute the method according to the embodiments of the present invention.

[0123] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein.

[0124] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for controlled high-temperature vapor permeation treatment of medical waste, characterized in that, The specific steps include: loading medical waste into the treatment chamber and evacuating the treatment chamber to reduce the pressure inside the treatment chamber to a first target negative pressure value; Saturated steam is injected into the processing chamber, and a multi-stage gradient pressurization procedure is executed to maintain the working pressure of the processing chamber at a slightly positive pressure state with a slight positive pressure offset on the basis of the target sterilization pressure. Maintaining the target sterilization temperature within the processing chamber under the micro-positive pressure state allows for basic heat penetration, and periodic pressure pulse cycling is performed on the processing chamber. The target sterilization temperature is maintained under the micro-positive pressure state for final sterilization. The processing chamber is then vacuum dried and air is injected into it for cooling. Finally, the processing chamber is opened to unload the processed product.

2. The method for controlled treatment of medical waste by high-temperature vapor permeation according to claim 1, characterized in that, The process of evacuating the processing chamber includes... The medical waste is classified and treated, and then sent into a high-temperature steam treatment chamber, which is in a closed state. The high-temperature steam treatment chamber, which is in a sealed state, is evacuated. The evacuation operation of the vacuum pump causes the internal pressure of the high-temperature steam treatment chamber to drop from atmospheric pressure.

3. The method for controlling the high-temperature vapor permeation treatment of medical waste according to claim 1, characterized in that, The process of reducing the pressure inside the treatment chamber to a first target negative pressure value includes... Set the first target negative pressure value in the parameter setting interface of the central controller, and measure the real-time pressure value in the processing chamber. The first target negative pressure value is compared with the real-time pressure value. When the comparison result shows that the real-time pressure value in the processing chamber is less than or equal to the first target negative pressure value, a vacuum pump shutdown command is generated. The vacuum pump executes the vacuum pump shutdown command and stops pumping air into the processing chamber.

4. The method for controlling the high-temperature vapor permeation treatment of medical waste according to claim 1, characterized in that, The micro-positive pressure state includes, When the steam regulating valve is opened, saturated steam flows into the processing chamber through the steam pipe. The inflow of saturated steam causes the pressure inside the processing chamber to rise from the first target negative pressure value. The pressure sensor monitors the real-time pressure value during the pressure rise process inside the processing chamber and compares the real-time pressure value inside the processing chamber with the preset first-level intermediate pressure value. When the real-time pressure value inside the processing chamber reaches the first-level intermediate pressure value, adjust the opening of the steam regulating valve to maintain the pressure inside the processing chamber at the first-level intermediate pressure value. The pressure inside the treatment chamber is maintained at the first-stage intermediate pressure value for a first time. After the first time ends, the opening of the steam regulating valve is increased to allow the pressure inside the treatment chamber to continue to rise. The real-time pressure value inside the processing chamber is compared with the preset second-stage intermediate pressure value. When the real-time pressure value inside the processing chamber reaches the second-stage intermediate pressure value, the opening of the steam regulating valve is adjusted again to maintain the second-stage intermediate pressure value. The pressure inside the treatment chamber is maintained at the second-stage intermediate pressure value for a second time. After the second time ends, the central controller continues to increase the opening of the steam regulating valve, so that the pressure inside the treatment chamber moves toward the target sterilization pressure. When the real-time pressure value inside the treatment chamber reaches the target sterilization pressure, the pressure control setpoint is adjusted to the sum of the target sterilization pressure and the micro-positive pressure offset. Based on the adjusted pressure control setpoint, the working pressure of the processing chamber is maintained in the slightly positive pressure state by dynamically adjusting the opening of the steam regulating valve.

5. The method for controlled treatment of medical waste by high-temperature vapor permeation according to claim 1, characterized in that, The basic thermal penetration includes, Monitor the pressure inside the treatment chamber under a slightly positive pressure state, and compare the pressure value inside the treatment chamber under the slightly positive pressure state with the set pressure control setpoint. Based on the comparison results, a control signal is generated for the steam regulating valve. The steam regulating valve adjusts its opening according to the control signal to control the injection amount of saturated steam. The amount of saturated steam injected maintains the temperature inside the treatment chamber at the target sterilization temperature. Temperature sensors monitor and maintain the temperature inside the processing chamber at the target sterilization temperature. Once the temperature inside the processing chamber is confirmed to have reached the target sterilization temperature, the timing of the basic heat penetration phase is started, and the basic heat penetration time is accumulated. When the accumulated basic heat penetration time reaches the preset value, the basic heat penetration phase ends.

6. The method for controlling the high-temperature vapor permeation treatment of medical waste according to claim 1, characterized in that, The periodic pressure pulse cycle processing includes, The central controller performs a rapid pressurization operation, raising the pressure inside the processing chamber from a slightly positive pressure state to the peak pressure. After reaching the peak pressure, it performs a high-pressure maintenance operation to maintain the pressure inside the processing chamber at the peak pressure for a continuous high-pressure maintenance time. After the high-pressure maintenance period ends, a rapid depressurization operation is performed to reduce the pressure inside the treatment chamber from the peak pressure to the trough pressure. After the valley pressure is reached, a pressure recovery operation is performed to restore the pressure inside the treatment chamber from the valley pressure to a slightly positive pressure state. The central controller records the completed pressurization, maintenance, depressurization and recovery operations as pressure pulse cycles, and repeats them a preset number of times before the periodic pressure pulse cycle processing ends.

7. The method for controlling the high-temperature vapor permeation treatment of medical waste according to claim 1, characterized in that, The final sterilization includes, Based on the pressure control setpoint under slight positive pressure, adjust the opening of the steam regulating valve to maintain a slight positive pressure state in the processing chamber. Adjust the opening of the steam regulating valve to stabilize the temperature inside the processing chamber at the target sterilization temperature. After confirming that the temperature inside the processing chamber has reached the target sterilization temperature, start the cumulative timing of the final sterilization time. During the cumulative final sterilization time, the valves are adjusted according to the pressure set point to maintain a slightly positive pressure in the processing chamber and the target sterilization temperature. When the cumulative final sterilization time reaches the preset duration, the final sterilization process ends.

8. The method for controlled treatment of medical waste by high-temperature vapor permeation according to claim 1, characterized in that, The discharged products include, The central controller starts the vacuum drying program, which uses a vacuum pump to evacuate the processing chamber to reduce the humidity inside. Once the vacuum drying program reaches the preset dryness level, the vacuum pump is turned off and the air intake valve is opened to inject filtered clean air into the processing chamber. Filtered clean air is injected into the processing chamber to restore the pressure inside the processing chamber to atmospheric pressure, and the temperature inside the processing chamber is reduced by the cooling unit. When the temperature inside the processing chamber drops to the safe unloading temperature, the door lock is released and the processing chamber door is allowed to be opened to unload the processed products from the processing chamber.

9. The method for controlled treatment of medical waste by high-temperature vapor permeation according to claim 1, characterized in that, The multi-level gradient pressurization procedure includes two pressurization steps with pressure holding platforms, wherein the target pressure of the first pressurization step is lower than the target pressure of the second pressurization step, and in the pressure pulse cycle processing, the pressure drop rate of the rapid depressurization operation is greater than the pressure rise rate of the rapid pressurization operation, and the valley pressure is lower than the target sterilization pressure.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the high-temperature vapor permeation controlled treatment method for medical waste according to any one of claims 1-9.

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