Sterilization and preservation system, control method and device thereof, and storage medium

Abstract

This application proposes a sterilization and preservation system, its control method, apparatus, and storage medium. The control method includes: responding to a preset sterilization command, controlling the inner liner to be in a sealed state; the inner liner is used to store preserved items; controlling a valve to open so that a carbon dioxide release device releases carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner through a valve; after the carbon dioxide concentration in the inner liner is within a first preset target concentration range and maintained for a first preset duration, controlling the valve to close, and controlling the operation of an exhaust module or a purification module; when the exhaust module is running, it can exhaust gas from the inner liner; when the purification module is running, it can adsorb carbon dioxide from the inner liner; when the carbon dioxide concentration in the inner liner drops to a second preset target concentration range, controlling an electron beam generator to operate; the electron beam generator is located inside the inner liner; and ending the sterilization process. This application aims to solve the technical problem of poor performance in the prior art.

Description

Technical Field

[0001] This application relates to the field of sterilization and preservation technology, and in particular to sterilization and preservation systems, control methods, devices and storage media thereof. Background Technology

[0002] Refrigerators are a common sterilization and preservation system. As users' requirements for food health and quality increase, the main function of refrigerators has gradually evolved from "low-temperature preservation" to "active preservation" and "sterilization and antibacterial properties." Refrigerators slow down the growth of microorganisms through low temperatures, but their inhibitory effect on some special bacterial groups is limited, such as psychrophilic bacteria like Listeria and Pseudomonas, as well as mold spores. Summary of the Invention

[0003] This application aims to provide a sterilization and preservation system, its control method, device, and storage medium, in order to solve the technical problem of poor sterilization and bacteriostatic effects in the prior art.

[0004] In a first aspect, this application proposes a control method for a sterilization and preservation system, the control method comprising: In response to a preset sterilization command, the inner liner is kept in a sealed state; the inner liner is used to store fresh items. The control valve opens to allow the carbon dioxide release device to release carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner via the valve. After the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and remains within a first preset duration, the valve is controlled to close, and the exhaust module or the purification module is controlled to operate; when the exhaust module is running, it can exhaust the gas in the inner liner; when the purification module is running, it can adsorb the carbon dioxide in the inner liner. When the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, the electron beam generator is controlled to operate; the electron beam generator is located inside the inner liner. End of sterilization.

[0005] Optionally, the first preset target concentration range is 15%-30%; and / or, the first preset duration is 5-10 minutes; and / or, the second preset target concentration is 0.5%-2%.

[0006] Optionally, the electron beam generator has a deflection scanning coil at its electron beam outlet, and controlling the operation of the electron beam generator includes: Control the deflection scanning coil to scan; and / or The electron beam generator is controlled to operate at a preset dose for a second preset duration; wherein the preset dose is 0.3-1 kGy and the second preset duration is 10-30 seconds.

[0007] Optionally, opening the control valve to allow the carbon dioxide release device to release carbon dioxide into the inner liner includes: The valve is controlled to open at a preset opening degree so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period; wherein the third preset time period is 2-3 minutes.

[0008] Optionally, the opening of the control valve to allow the carbon dioxide release device to release carbon dioxide into the inner liner further includes: Obtain the first real-time concentration of carbon dioxide in the inner liner; The required valve opening is determined based on the first real-time concentration and the preset opening degree; The valve opening is adjusted from the preset opening to the required opening, so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period.

[0009] Optionally, controlling the operation of the exhaust module or the purification module includes: The exhaust module is controlled to operate at a preset wind speed or the purification module is controlled to operate at a preset power, so that the concentration of carbon dioxide in the inner liner decreases to the second preset target concentration range within a fourth preset time period; wherein, the fourth preset time period is 1-3 minutes.

[0010] Optionally, the control method includes: Obtain the target concentration of carbon dioxide in the inner liner; wherein the target concentration is within the first preset target concentration range; When the carbon dioxide concentration in the inner liner reaches the target concentration, the running time is started; When the running time is less than the first preset time, the second real-time concentration of carbon dioxide in the inner liner is obtained; If the second real-time concentration and the target concentration are equal, the opening of the valve is adjusted to ensure that the carbon dioxide concentration in the inner liner is within the first preset target concentration range and is maintained for the first preset duration.

[0011] Secondly, this application proposes a control device for a sterilization and preservation system, the control device comprising: A control module is configured to respond to a preset sterilization command by controlling the inner liner to be in a sealed state; the inner liner is used to store fresh items; and to control a valve to open so that a carbon dioxide release device releases carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner through the valve; and after the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and maintained for a first preset duration, control the valve to close and control the operation of an exhaust module or a purification module; the exhaust module, when operating, can exhaust gas from the inner liner; the purification module, when operating, can adsorb carbon dioxide from the inner liner; and when the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, control the operation of an electron beam generator; the electron beam generator is located inside the inner liner; and control the end of sterilization.

[0012] Thirdly, this application proposes a sterilization and preservation system, including a controller configured to execute the control method of the sterilization and preservation system as described above.

[0013] Fourthly, this application proposes a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the control method of the sterilization and preservation system as described above.

[0014] In the technical solution of this application embodiment, the carbon dioxide releasing device injects carbon dioxide into the inner liner and maintains it within a first preset target range for a first preset duration to stress bacteria, increasing their sensitivity and causing metabolic disorders, thus putting them into a stress and vulnerable state, increasing cell membrane permeability, and reducing their self-repair ability. Subsequently, when the carbon dioxide concentration in the inner liner drops to a second preset target concentration range, the carbon dioxide concentration in the environment where the bacteria are located changes, reducing their adaptability and making them easier to extinguish. Then, using the penetrating electron beam generated by the electron beam generator, due to the pre-stressed bacteria, the DNA, RNA, and cell membrane structure of the microorganisms are destroyed, leading to their inactivation or death. In addition to inactivating ordinary bacteria, it can also significantly kill psychrophilic bacteria, fungal spores, Listeria, and other bacteria. Attached Figure Description

[0015] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of a sterilization and preservation system provided in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the sterilization principle of a sterilization and preservation system provided in an embodiment of this application. Figure 3 A schematic flowchart illustrating a control method for a sterilization and preservation system provided in an embodiment of this application; Figure 4 A schematic flowchart illustrating a control method for a sterilization and preservation system provided in this application embodiment; Figure 5 This is a schematic diagram of the structure of a control device for a sterilization and preservation system provided in an embodiment of this application. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0019] Listeria, Pseudomonas, and other psychrophilic bacteria, as well as mold spores, are difficult to inactivate inside refrigerators, affecting user health. Therefore, this application provides a sterilization and preservation system, control method, device, and storage medium capable of sterilizing and inactivating bacteria, and exhibiting good bactericidal and bacteriostatic effects against Listeria, Pseudomonas, and other psychrophilic bacteria, as well as mold spores.

[0020] Furthermore, the technical solution proposed in this application can also improve upon existing technologies that use ultraviolet light, ozone, and plasma sterilization methods, which may result in blind spots, unpleasant odors, or accelerated food oxidation or material aging.

[0021] First, refer to Figure 1 As shown in the illustration, this application provides a sterilization and preservation system, which includes an inner liner 100, a carbon dioxide release device 300, a valve 200, an electron beam generator 400, and an exhaust module (and / or a purification module). The carbon dioxide release device is connected to the inner liner via the valve and is used to inject carbon dioxide into the inner liner. The electron beam generator is mounted on the inner liner and is used to irradiate the inner liner with an electron beam (typically a low-energy electron beam) generated by an accelerated electric field. The exhaust module (and / or purification module) is configured to exhaust gas from the inner liner (and / or adsorb carbon dioxide from the inner liner). The sterilization and preservation system also includes a controller 500 for controlling the valve, electron beam generator, and exhaust module (and / or purification module) to execute the steps of the control method provided in this application embodiment.

[0022] In some technical solutions in this field, the carbon dioxide concentration inside the inner liner is adjusted according to the type of food, thereby improving the photosynthetic metabolic efficiency of different foods and achieving a food preservation effect. In the technical solution of this application, the function of the carbon dioxide release device injecting carbon dioxide into the inner liner is to stress bacteria, increase their sensitivity, cause metabolic disorders, and put them into a stress and vulnerable state, increasing cell membrane permeability and reducing their self-repair ability. Subsequently, the penetrating electron beam generated by the electron beam generator, due to the pre-stressed bacteria, can damage the DNA, RNA, and cell membrane structure of microorganisms, leading to their inactivation or death. In addition to inactivating ordinary bacteria, it can also significantly kill psychrophilic bacteria, fungal spores, Listeria, and other bacteria.

[0023] Specifically, such as Figure 2 The diagram shown is a flowchart illustrating an embodiment of the control method for the sterilization and preservation system in this application. The control method includes: S100, in response to a preset sterilization command, controls the inner liner to be in a sealed state; the inner liner is used to store fresh items; since the carbon dioxide concentration in the inner liner needs to be increased during the sterilization process, and the electron beam generator also needs to be activated, the inner liner needs to be in a sealed state after receiving the preset sterilization command.

[0024] In some embodiments, the inner liner is equipped with a door. The controller will only issue a preset sterilization command or start the sterilization program when the door is closed. For example, the sterilization and preservation system has a periodic sterilization program. When the preset sterilization time is reached, it needs to determine whether the door is closed; the controller will only issue the preset sterilization command when the door is closed. Alternatively, the user can issue a sterilization command through the control buttons of the sterilization and preservation system or an app; upon receiving this command, it needs to determine whether the door is closed, and the controller will only start the sterilization program when the door is closed.

[0025] In some embodiments, the inner liner is connected to the cooling chamber (evaporator chamber) via the air duct 110. Upon receiving a preset sterilization command, the damper of the air duct needs to be closed, at which point the passage between the inner liner and the evaporator chamber is cut off, and the inner liner is in a sealed state.

[0026] S200, control the valve to open so that the carbon dioxide release device releases carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner through the valve; After the inner liner is sealed, the valve opens, and the carbon dioxide release device releases carbon dioxide into the inner liner, thereby increasing the carbon dioxide concentration inside. The carbon dioxide release device can be a high-pressure CO2 cylinder or a solid CO2 depressurization device, and can be located in the compressor compartment or on the outside of the inner liner. In some embodiments, the inner liner is provided with an air duct 110, which is connected to the refrigeration passage via a damper. The carbon dioxide release device can communicate with the inner liner through the air duct 110 or directly to the inner liner. In some embodiments, a power fan 120 is provided within the air duct 110. The power fan starts synchronously after the valve opens to quickly disperse carbon dioxide into the inner liner, allowing bacteria in various locations to interact with the carbon dioxide.

[0027] In some embodiments, the carbon dioxide release device is connected to the inner liner or air duct via a gas tube. A valve is mounted on the gas tube. A diffusion nozzle is provided at the outlet end of the gas tube to facilitate rapid and uniform gas diffusion.

[0028] S300, after the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and is maintained for a first preset duration, the valve is controlled to close, and the exhaust module or the purification module is controlled to operate; when the exhaust module is running, it can exhaust the gas in the inner liner; when the purification module is running, it can adsorb the carbon dioxide in the inner liner. In this embodiment, when the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and is maintained for a first preset duration, carbon dioxide exerts a "stress" effect on the bacteria, causing metabolic disorders and putting the bacteria into a stress and vulnerable state, increasing cell membrane permeability and reducing self-repair ability.

[0029] When the carbon dioxide concentration in the inner liner is within the first preset target concentration range and is maintained for a first preset duration, the valve is closed to stop the carbon dioxide injection. The gas in the inner liner is discharged using the exhaust module or the carbon dioxide in the inner liner is adsorbed using the purification module to reduce the carbon dioxide concentration in the inner liner. This causes a rapid change in the carbon dioxide concentration in the environment of the bacteria, which helps with the subsequent electron beam inactivation.

[0030] S400, when the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, the electron beam generator is controlled to operate; the electron beam generator is located inside the inner liner; When the concentration of carbon dioxide in the inner liner drops to the second preset target concentration range, the electron beam generator is controlled to operate. The electron beam generator generates a high-speed electron beam. Electrons have penetrating power. Because the bacteria are pre-stressed, they can destroy the DNA, RNA and cell membrane structure of microorganisms, causing them to become inactive or die. In addition to being able to inactivate ordinary bacteria, it can also significantly kill psychrophilic bacteria, mold spores, Listeria, and other bacteria.

[0031] The electron beam generator can be a miniature low-energy electron beam generator: it adopts cold cathode field emission technology, has a relatively low operating voltage (80-120 kV), and the equipment is small in size and can be embedded in the air duct or the top of the room.

[0032] S500, sterilization complete.

[0033] After the electron beam generator runs for a period of time, the sterilization process ends; the electron beam generator is turned off, the damper is opened, and the sterilization and preservation system begins normal operation. The panel can also prompt users to open the door and turn off the sterilization process.

[0034] In the technical solution of this application embodiment, the carbon dioxide releasing device injects carbon dioxide into the inner liner and maintains it within a first preset target range for a first preset duration to stress bacteria, increasing their sensitivity and causing metabolic disorders, thus putting them into a stress and vulnerable state, increasing cell membrane permeability, and reducing their self-repair ability. Subsequently, when the carbon dioxide concentration in the inner liner drops to a second preset target concentration range, the carbon dioxide concentration in the environment where the bacteria are located changes, reducing their adaptability and making them easier to extinguish. Then, using the penetrating electron beam generated by the electron beam generator, due to the pre-stressed bacteria, the DNA, RNA, and cell membrane structure of the microorganisms are destroyed, leading to their inactivation or death. In addition to inactivating ordinary bacteria, it can also significantly kill psychrophilic bacteria, fungal spores, Listeria, and other bacteria.

[0035] As an optional implementation of the above embodiments, the first preset target concentration range is 15%-30%; and / or, the first preset duration is 5-10 minutes; and / or, the second preset target concentration is 0.5%-2%. Within this first preset target concentration range, and with a first preset duration of 5-10 minutes, bacteria can be effectively stressed and their sensitivity increased without compromising the freshness of fruits and vegetables. For example, in some embodiments, the first preset target concentration can be set to 20%-25%, 18%-24%, etc., and the first preset duration can be 5 minutes, 6 minutes, 7 minutes, 8 minutes, or 9 minutes. A second preset target concentration of 1%-2% causes a significant change in carbon dioxide concentration, reducing the bacteria's adaptability and making them easier to extinguish. For example, the second preset target concentration can be 0.5%-1%, 1.2%-1.8%.

[0036] In some embodiments, the first preset duration can be set according to the sterilization mode. For example, in the normal sterilization mode (timed trigger), the first preset duration can be 5 minutes. Timed trigger means that the system sets the running cycle of the sterilization mode, such as running automatically once every 24 hours, or based on the number of times the user opens the door (triggered once after the number of door openings reaches a preset number). The running cycle can be adjusted according to the user's door opening frequency, for example, if the door is opened frequently, it can be adjusted from 24 hours to 18 hours.

[0037] For example, in the powerful sterilization mode (triggered by the user or by the odor sensor), the second preset duration can be 8 minutes.

[0038] As an optional implementation of the above embodiments, the electron beam generator has a deflection scanning coil at its electron beam outlet, and controlling the operation of the electron beam generator includes controlling the deflection scanning coil to scan. By using the deflection scanning coil to make the electron stream scan at a certain angle, a wider range can be radiated, achieving large-area coverage of the inner liner and improving the sterilization effect.

[0039] In this embodiment, the electron beam generator is controlled to operate at a preset dose for a second preset duration; wherein the preset dose is 0.3-1 kGy, and the second preset duration is 10-30 seconds. In this embodiment, since carbon dioxide-stressed bacteria are more easily inactivated, the generated electron beam irradiation dose is configured at 0.3-1 kGy, and the irradiation time does not need to be too long to effectively sterilize. This low-dose range helps protect the electron beam generator and the storage structure materials in the inner liner, reducing damage to the storage structure materials and food caused by the electron beam. It also avoids temperature increases in the inner liner due to sterilization, overcoming problems such as food damage or material aging caused by ultraviolet light, ozone, and plasma sterilization in existing technologies. Furthermore, the low-dose radiation and short-duration operation of the electron beam generator also contribute to energy conservation.

[0040] Furthermore, the sterilization and preservation device provided in this application embodiment can control the overall sterilization time to within 15 minutes, with high sterilization efficiency, significant sterilization effect and low energy consumption.

[0041] As an optional implementation of the above embodiments, opening the control valve to allow the carbon dioxide releasing device to release carbon dioxide into the inner liner includes: The valve is controlled to open at a preset opening degree so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period; wherein the third preset time period is 2-3 minutes.

[0042] In this embodiment, the valve is opened at a preset opening degree so that the carbon dioxide release device can increase the carbon dioxide concentration to the first preset target concentration range within 2-3 minutes, thereby rapidly increasing the carbon dioxide concentration in the inner liner to the first preset target concentration range. This allows bacteria to quickly switch from a low-concentration carbon dioxide environment to a high-concentration carbon dioxide environment, making the bacteria more susceptible to stress and increasing their sensitivity.

[0043] In this embodiment, the preset opening degree is set by the system and can be determined experimentally. For example, in some models, a preset opening degree of 30% can raise the carbon dioxide concentration to the first preset target concentration range within 2-3 minutes; while in other models, a preset opening degree of 50% is required to raise the carbon dioxide concentration to the first preset target concentration range within 2-3 minutes. Therefore, different models have different preset opening degree settings; thus, the specific value of the preset opening degree is not specifically limited.

[0044] As an optional implementation of the above embodiments, the opening of the control valve to allow the carbon dioxide releasing device to release carbon dioxide into the inner liner further includes: Obtain the first real-time concentration of carbon dioxide in the inner liner; The required valve opening is determined based on the first real-time concentration and the preset opening degree; The valve opening is adjusted from the preset opening to the required opening, so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period.

[0045] In this embodiment, the inner liner contains a certain amount of carbon dioxide; and the base concentration of the original carbon dioxide in the inner liner is different each time sterilization is started; therefore, after opening at a preset opening degree, the concentration of carbon dioxide may be difficult to reach the left end value of the first preset target concentration range or exceed the right end value of the first preset target concentration range within a third preset time period; therefore, in this embodiment, after the valve is opened at a preset opening degree, the required opening degree of the valve is determined by detecting the first real-time concentration of carbon dioxide and the preset opening degree.

[0046] For example, the system is set to detect the first real-time concentration every 20 seconds.

[0047] If the first real-time concentration is less than the concentration threshold after 20 seconds of opening, the carbon dioxide concentration may not reach the left end of the first preset target concentration range within the third preset time period. Therefore, the required opening is determined by increasing the opening by 10% based on the preset opening to increase the amount of carbon dioxide injected.

[0048] When the first real-time concentration of the Nth time is greater than the concentration threshold after the Nth 20-second period, the concentration of carbon dioxide may exceed the left end value of the first preset target concentration range within the third preset time period. Therefore, the required opening degree is determined by reducing the opening degree by 10% based on the preset opening degree, thereby reducing the amount of carbon dioxide injected.

[0049] As an optional implementation of the above embodiments, controlling the operation of the exhaust module or the purification module includes: controlling the exhaust module to operate at a preset wind speed or controlling the purification module to operate at a preset power, so that the concentration of carbon dioxide in the inner liner decreases to the second preset target concentration range within a fourth preset time period; wherein, the fourth preset time period is 1-3 minutes.

[0050] In this embodiment, the exhaust module and the purification module need to quickly reduce the carbon dioxide concentration in the inner liner to the range of the second preset target concentration within a fourth preset time period, so that the environment in the inner liner can be switched from high concentration carbon dioxide to low concentration carbon dioxide, thereby reducing the adaptability of bacteria.

[0051] In some embodiments, the preset wind speed or preset power is determined based on the maximum concentration of carbon dioxide in the inner liner; the higher the maximum concentration of carbon dioxide, the higher the preset wind speed or preset power, and the faster the rate of decrease in carbon dioxide concentration.

[0052] As an optional implementation of the above embodiments, the control method includes: Obtain the target concentration of carbon dioxide in the inner liner; wherein the target concentration is within the first preset target concentration range; When the carbon dioxide concentration in the inner liner reaches the target concentration, the running time is started; When the running time is less than the first preset time, the second real-time concentration of carbon dioxide in the inner liner is obtained; If the second real-time concentration and the target concentration are equal, the opening of the valve is adjusted to ensure that the carbon dioxide concentration in the inner liner is within the first preset target concentration range and is maintained for the first preset duration.

[0053] In this embodiment, a target concentration of carbon dioxide is set in the system. That is, during sterilization, the carbon dioxide concentration in the inner tank is increased to the target concentration by opening the valve, and then the operating time is recorded to stress the bacteria. During sterilization, the carbon dioxide concentration changes dynamically. To ensure the carbon dioxide concentration remains within a first preset target range, a second real-time concentration is detected. Then, based on the second real-time concentration and the target concentration, the valve opening is adjusted.

[0054] In some embodiments, when the carbon dioxide concentration in the inner liner reaches the target concentration, the valve opening is adjusted to a maintenance opening (an ideal value set by the system to maintain the carbon dioxide concentration within a first preset target range, determined experimentally); at this time, a second real-time concentration is detected; when the second real-time concentration is lower than a first preset percentage of the target concentration, the valve opening is increased to allow the carbon dioxide concentration to remain relatively stable near the target concentration until it is maintained for a first preset duration. When the second real-time concentration is higher than a second preset percentage of the target concentration, the valve opening is decreased to allow the carbon dioxide concentration to remain relatively stable near the target concentration until it is maintained for the first preset duration. The first and second preset percentages are set in the system and are not specifically limited.

[0055] In this embodiment, the second real-time concentration is a real-time detection value, which can be detected every 10 seconds or 20 seconds.

[0056] Reference Figure 4 As shown, Figure 4 An example of a specific implementation of the control method of this application is provided: Start sterilization; Close the hatch of the inner liner and the dampers in the air duct to keep the inner liner in a sealed state; Open the valve to release carbon dioxide and monitor whether the carbon dioxide concentration reaches the first preset target concentration range; if so, start timing and maintain for the first preset duration (during this process, it is necessary to monitor whether the carbon dioxide concentration is lower than the first preset target concentration range; if so, it is necessary to adjust the valve opening and replenish carbon dioxide); if not, continue to release carbon dioxide through the valve and monitor whether the carbon dioxide concentration reaches the first preset target concentration range. After the first preset time period is reached, the valve is closed and the exhaust module or purification module is started to discharge carbon dioxide until it drops to the second preset target concentration range. Then, the electron beam generator was turned on and ran for a period of time before the sterilization process ended.

[0057] In this embodiment, the sterilization and preservation system also includes a monitoring module. The monitoring module includes gas sensors, such as O2, CO2, and ethylene sensors, for monitoring the concentrations of O2, CO2, and ethylene; it also includes temperature sensors, humidity sensors, and a temperature / humidity sensor for monitoring the temperature / humidity inside the inner liner; it further includes a biosensor or odor sensor for determining the microbial load inside the inner liner; and it includes a door open / close sensor for determining whether the door is closed.

[0058] To better implement the control method of the sterilization and preservation system in the embodiments of this application, based on the control method of the sterilization and preservation system, the embodiments of this application also provide a control device for the sterilization and preservation system, such as... Figure 5 As shown, the control device of the sterilization and preservation system includes: The control module 10 is used to respond to a preset sterilization command and control the inner liner to be in a sealed state; the inner liner is used to store fresh items; control the valve to open so that the carbon dioxide release device releases carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner through the valve; after the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and is maintained for a first preset duration, control the valve to close and control the exhaust module or purification module to operate; when the exhaust module is running, it can exhaust the gas in the inner liner; when the purification module is running, it can adsorb the carbon dioxide in the inner liner; when the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, control the electron beam generator to operate; the electron beam generator is located inside the inner liner; and end the sterilization process.

[0059] Optionally, the first preset target concentration range is 15%-30%; and / or, the first preset duration is 5-10 minutes; and / or, the second preset target concentration is 0.5%-2%.

[0060] Optionally, the electron beam generator has a deflection scanning coil at its electron beam outlet. The control of the electron beam generator includes: a control module 10 for controlling the deflection scanning coil to scan; and / or controlling the electron beam generator to operate at a preset dose for a second preset duration; wherein the preset dose is 0.3-1 kGy and the second preset duration is 10-30 seconds.

[0061] Optionally, the control valve opening to allow the carbon dioxide release device to release carbon dioxide into the inner liner includes: the control module 10 controlling the valve to open at a preset opening degree so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset duration; wherein the third preset duration is 2-3 minutes.

[0062] Optionally, the control valve opening to allow the carbon dioxide releasing device to release carbon dioxide into the inner liner further includes: an acquisition module 20 for acquiring a first real-time concentration of carbon dioxide in the inner liner; a determination module 30 for determining the required opening degree of the valve based on the first real-time concentration and the preset opening degree; and a control module 10 for controlling the opening degree of the valve to adjust from the preset opening degree to the required opening degree, so that the carbon dioxide releasing device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period.

[0063] Optionally, controlling the operation of the exhaust module or the purification module includes: the control module controlling the exhaust module to operate at a preset wind speed or controlling the purification module to operate at a preset power, so that the concentration of carbon dioxide in the inner liner decreases to the second preset target concentration range within a fourth preset time period; wherein the fourth preset time period is 1-3 minutes.

[0064] Optionally, the control method includes: an acquisition module 20 for acquiring a target concentration of carbon dioxide in the inner liner; wherein the target concentration is within a first preset target concentration range; the acquisition module 20 for starting to acquire a running time when the concentration of carbon dioxide in the inner liner reaches the target concentration; the acquisition module 20 for acquiring a second real-time concentration of carbon dioxide in the inner liner when the running time is less than the first preset time; and a control module 10 for controlling the opening of the valve to adjust the opening if the second real-time concentration and the target concentration are equal, so that the concentration of carbon dioxide in the inner liner is within the first preset target concentration range and is maintained for the first preset time.

[0065] This application also proposes a control system for a sterilization and preservation system, comprising: one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the control method of the sterilization and preservation system as described above.

[0066] Typically, the control system of the sterilization and preservation system includes: at least one processor, at least one memory, and a control program for the control system of the sterilization and preservation system stored in the memory and executable on the processor. The control program for the control system of the sterilization and preservation system is configured to implement the steps of the control method described above.

[0067] The processor may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor can be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. The processor may also include an AI (Artificial Intelligence) processor, which handles the control method operations of the sterilization and preservation system's control system, enabling the control method model of the sterilization and preservation system's control system to learn autonomously, improving efficiency and accuracy.

[0068] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory is used to store at least one instruction, which is executed by a processor to implement the control method of the sterilization and preservation system of the control system provided in the method embodiments of this application. In response to a preset sterilization command, the inner liner is kept in a sealed state; the inner liner is used to store fresh items. The control valve opens to allow the carbon dioxide release device to release carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner via the valve. After the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and remains within a first preset duration, the valve is controlled to close, and the exhaust module or the purification module is controlled to operate; when the exhaust module is running, it can exhaust the gas in the inner liner; when the purification module is running, it can adsorb the carbon dioxide in the inner liner. When the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, the electron beam generator is controlled to operate; the electron beam generator is located inside the inner liner. End of sterilization.

[0069] Optionally, the first preset target concentration range is 15%-30%; and / or, the first preset duration is 5-10 minutes; and / or, the second preset target concentration is 0.5%-2%.

[0070] Optionally, the electron beam generator has a deflection scanning coil at its electron beam outlet, and controlling the operation of the electron beam generator includes: Control the deflection scanning coil to scan; and / or The electron beam generator is controlled to operate at a preset dose for a second preset duration; wherein the preset dose is 0.3-1 kGy and the second preset duration is 10-30 seconds.

[0071] Optionally, opening the control valve to allow the carbon dioxide release device to release carbon dioxide into the inner liner includes: The valve is controlled to open at a preset opening degree so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period; wherein the third preset time period is 2-3 minutes.

[0072] Optionally, the opening of the control valve to allow the carbon dioxide release device to release carbon dioxide into the inner liner further includes: Obtain the first real-time concentration of carbon dioxide in the inner liner; The required valve opening is determined based on the first real-time concentration and the preset opening degree; The valve opening is adjusted from the preset opening to the required opening, so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period.

[0073] Optionally, controlling the operation of the exhaust module or the purification module includes: The exhaust module is controlled to operate at a preset wind speed or the purification module is controlled to operate at a preset power, so that the concentration of carbon dioxide in the inner liner decreases to the second preset target concentration range within a fourth preset time period; wherein, the fourth preset time period is 1-3 minutes.

[0074] Optionally, the control method includes: Obtain the target concentration of carbon dioxide in the inner liner; wherein the target concentration is within the first preset target concentration range; When the carbon dioxide concentration in the inner liner reaches the target concentration, the running time is started; When the running time is less than the first preset time, the second real-time concentration of carbon dioxide in the inner liner is obtained; If the second real-time concentration and the target concentration are equal, the opening of the valve is adjusted to ensure that the carbon dioxide concentration in the inner liner is within the first preset target concentration range and is maintained for the first preset duration.

[0075] The above provides a detailed description of a sterilization and preservation system, its control method, apparatus, and storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A control method for a sterilization and preservation system, characterized in that, The control method includes: In response to a preset sterilization command, the inner liner is kept in a sealed state; the inner liner is used to store fresh items. The control valve opens to allow the carbon dioxide release device to release carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner via the valve. After the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and remains within a first preset duration, the valve is closed, and the exhaust module or the purification module is activated. When the exhaust module is activated, it can exhaust the gas inside the inner liner. When the purification module is activated, it can adsorb the carbon dioxide in the inner liner. When the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, the electron beam generator is controlled to operate; the electron beam generator is located inside the inner liner. End of sterilization.

2. The control method for the sterilization and preservation system as described in claim 1, characterized in that, The first preset target concentration range is 15%-30%; and / or, the first preset duration is 5-10 minutes; and / or, the second preset target concentration is 0.5%-2%.

3. The control method for the sterilization and preservation system as described in claim 1, characterized in that, The electron beam generator is equipped with a deflection scanning coil at its electron beam outlet. Controlling the operation of the electron beam generator includes: Control the deflection scanning coil to scan; and / or The electron beam generator is controlled to operate at a preset dose for a second preset duration; wherein the preset dose is 0.3-1 kGy and the second preset duration is 10-30 seconds.

4. The control method for the sterilization and preservation system as described in claim 1, characterized in that, The opening of the control valve to allow the carbon dioxide releasing device to release carbon dioxide into the inner liner includes: The valve is controlled to open at a preset opening degree so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period; wherein the third preset time period is 2-3 minutes.

5. The control method for the sterilization and preservation system as described in claim 4, characterized in that, The opening of the control valve to allow the carbon dioxide releasing device to release carbon dioxide into the inner liner also includes: Obtain the first real-time concentration of carbon dioxide in the inner liner; The required valve opening is determined based on the first real-time concentration and the preset opening degree; The valve opening is adjusted from the preset opening to the required opening, so that the carbon dioxide release device increases the carbon dioxide concentration in the inner liner to the first preset target concentration range within a third preset time period.

6. The control method for the sterilization and preservation system as described in claim 1, characterized in that, The control of the exhaust module or the purification module includes: The exhaust module is controlled to operate at a preset wind speed or the purification module is controlled to operate at a preset power, so that the concentration of carbon dioxide in the inner liner decreases to the second preset target concentration range within a fourth preset time period; wherein the fourth preset time period is 1-3 minutes.

7. The control method for the sterilization and preservation system as described in claim 1, characterized in that, The control method includes: Obtain the target concentration of carbon dioxide in the inner liner; wherein the target concentration is within the first preset target concentration range; When the carbon dioxide concentration in the inner liner reaches the target concentration, the running time is started; When the running time is less than the first preset time, the second real-time concentration of carbon dioxide in the inner liner is obtained; If the second real-time concentration and the target concentration are equal, the opening of the valve is adjusted to ensure that the carbon dioxide concentration in the inner liner is within the first preset target concentration range and is maintained for the first preset duration.

8. A control device for a sterilization and preservation system, characterized in that, The control device includes: A control module is configured to respond to a preset sterilization command by controlling the inner liner to be in a sealed state; the inner liner is used to store fresh items; and to control a valve to open so that a carbon dioxide release device releases carbon dioxide into the inner liner; the carbon dioxide release device is connected to the inner liner through the valve; and after the concentration of carbon dioxide in the inner liner is within a first preset target concentration range and maintained for a first preset duration, control the valve to close and control the operation of an exhaust module or a purification module; the exhaust module, when operating, can exhaust gas from the inner liner; the purification module, when operating, can adsorb carbon dioxide from the inner liner; and when the concentration of carbon dioxide in the inner liner drops to a second preset target concentration range, control the operation of an electron beam generator; the electron beam generator is located inside the inner liner; and control the end of sterilization.

9. A sterilization and preservation system, characterized in that, The system includes a controller configured to perform a control method for the sterilization and preservation system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps in the control method of the sterilization and preservation system according to any one of claims 1 to 7.

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