Refrigeration appliance and method of controlling a refrigeration appliance

Abstract

This application discloses a refrigeration device and a control method for the refrigeration device, relating to the field of refrigeration equipment technology. The refrigeration device includes: a preservation chamber having a sealed state and an open state; a pressure regulating component connected to the preservation chamber and configured to: regulate the pressure of the preservation chamber in response to a controller's command; a sterilization component configured to: perform a sterilization operation on the preservation chamber in response to a controller's command; the controller is configured to: detect the chamber environment information of the preservation chamber when the preservation chamber is in a sealed state; if the chamber environment information meets preset pressure regulating conditions, control the pressure regulating component to reduce a first pressure to a first preset pressure; after reducing the first pressure to the first preset pressure, control the pressure regulating component to stop operating and control the sterilization component to perform a sterilization operation. Based on the above refrigeration device, energy consumption can be effectively reduced while ensuring preservation and sterilization effects.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and in particular to a refrigeration device and a control method for the refrigeration device. Background Technology

[0002] With the development of refrigeration equipment preservation technology, vacuum preservation chambers have become the core preservation configuration of high-end refrigerators and other refrigeration equipment because they can form a closed low-oxygen / negative pressure environment, effectively inhibiting the respiration and oxidative deterioration of food. They are widely used for the long-term storage of fruits, vegetables and other fresh food.

[0003] Existing vacuum preservation chambers only create a relatively sealed negative pressure / low oxygen environment through air pressure regulation components, relying on low temperature and low oxygen conditions to inhibit microbial growth.

[0004] However, the low oxygen and low temperature inside a vacuum preservation chamber can only inhibit the growth of anaerobic and conventional microorganisms, but cannot effectively kill microorganisms. Furthermore, the sealed structure of a vacuum drawer prevents moisture evaporating during food storage from dissipating effectively, causing it to accumulate and continuously increase humidity inside the drawer, creating a high-humidity, sealed storage environment. Consequently, in a high-humidity, sealed environment without sterilization protection, microorganisms easily proliferate, making it difficult to achieve long-term, stable preservation of food. Summary of the Invention

[0005] This application provides a refrigeration device and a control method for the refrigeration device, which can solve the problem that in a high-humidity, sealed environment without sterilization protection, the preservation chamber is prone to microbial growth, making it difficult to achieve long-term stable preservation of food.

[0006] In a first aspect, a refrigeration device is provided, comprising: The preservation chamber has both a sealed and an open state; The air pressure regulating component, connected to the preservation chamber, is configured to regulate the air pressure in the preservation chamber in response to instructions from the controller. The sterilization component is configured to perform a sterilization operation on the preservation chamber in response to instructions from the controller. The controller is configured as follows: When the preservation chamber is in a sealed state, the chamber environment information is detected; the chamber environment information includes the first air pressure; the first air pressure refers to the actual air pressure value detected in the chamber in real time when the preservation chamber is in a sealed state. If the chamber environment information meets the preset air pressure regulation conditions, the air pressure regulation component is controlled to reduce the first air pressure to the first preset air pressure. After reducing the first air pressure to the first preset air pressure, the control air pressure regulating component stops operating, and the control sterilization component performs sterilization operation; The controller controls the sterilization components to perform sterilization operations and is configured as follows: Calculate the pressure fluctuation value between the first air pressure and the first preset air pressure; Obtain the sterilization start-up and stop time ratio corresponding to the air pressure fluctuation value; the sterilization start-up and stop time ratio is the ratio of the working time to the stop time of the sterilization component within a preset working cycle; The sterilization components are controlled to perform periodic sterilization operations based on the ratio of sterilization start-stop time.

[0007] In the above technical solution, the coordinated control of the pressure regulation component and the sterilization component enables step-by-step synergistic efficiency. First, monitoring the environmental information within the sealed preservation chamber allows for accurate understanding of its state, providing reliable data support for pressure regulation. Then, when the pressure regulation conditions are met, the initial pressure within the chamber is reduced to a first preset pressure, creating a stable low-oxygen preservation environment that effectively inhibits food respiration and microbial growth, delaying food oxidation and spoilage. Finally, after pressure regulation is complete and the pressure regulation component stops operating, the sterilization component is activated. This directly kills residual microorganisms within the chamber, forming a dual protection of antibacterial and sterilization, addressing the problem of microbial growth and food spoilage in the sealed, high-humidity vacuum preservation chamber. Thus, both antibacterial and sterilization ensure the preservation effect of the food, achieving long-term stable storage. Furthermore, the time-sharing execution of pressure regulation and sterilization avoids energy waste caused by simultaneous operation of both components, effectively reducing equipment energy consumption and improving operational economy while ensuring preservation and sterilization effects. Furthermore, by calculating the pressure fluctuations within the preservation chamber before and after pressure adjustment, the system adaptively matches the corresponding sterilization start-stop time ratio and controls the sterilization components to perform periodic sterilization based on this ratio. This allows for dynamic adjustment of the sterilization intensity according to the degree of pressure decay within the preservation chamber. Consequently, it can accurately adapt to the risk of microbial growth under different negative pressure decay states, not only enhancing the sterilization and preservation effect of the sealed preservation chamber but also avoiding ineffective energy consumption caused by continuous sterilization. This achieves an optimal balance between sterilization effectiveness and equipment operating energy consumption, ensuring long-term stable preservation of food.

[0008] In one embodiment, the controller is further configured to: When the first air pressure in the preservation chamber rises to the second preset air pressure, it is determined that the chamber environment information meets the air pressure regulation conditions; the second preset air pressure is greater than the first preset air pressure.

[0009] In the above technical solution, using the second preset air pressure as the automatic trigger threshold can accurately identify the state of negative pressure decay failure in the preservation chamber and promptly restore the chamber air pressure to the first preset air pressure. This ensures a continuous and stable low-oxygen antibacterial environment, preventing a decrease in microbial inhibition effect due to air pressure recovery and guaranteeing that the vacuum preservation effect remains intact.

[0010] In one embodiment, the chamber environment information also includes the interval duration at which the pressure regulation component stops operating, and the controller is further configured to: When the interval duration is greater than or equal to the first preset duration, it is determined that the chamber environment information meets the air pressure regulation conditions.

[0011] In the above technical solution, the interval between when the air pressure regulating component stops working is included in the air pressure regulation conditions. When the interval is greater than or equal to a first preset time, the air pressure regulation conditions are determined to be met. Therefore, it can proactively repair the negative pressure decay in the preservation chamber caused by micro-leakage from the seal and gas release from the food at regular intervals. It can maintain a stable low-oxygen antibacterial environment in advance without waiting for a significant increase in air pressure, preventing the preservation effect from gradually declining over time and ensuring a more stable food preservation state.

[0012] In one embodiment, the sterilization start-stop time ratio is positively correlated with the air pressure fluctuation value.

[0013] In the above technical solution, the greater the air pressure fluctuation, the longer the sterilization component operates within a preset working cycle, and the greater the ratio of sterilization start-up and shutdown time. Furthermore, it can adaptively match the degree of air pressure decay in the preservation chamber; the more severe the air pressure decay, the higher the sterilization intensity, ensuring sterilization effectiveness while avoiding ineffective energy consumption.

[0014] In one embodiment, the controller is further configured to: When the preservation chamber is detected to switch from a closed state to an open state, the control air pressure regulating component and the sterilization component stop working.

[0015] In the above technical solution, when the fresh-keeping chamber is detected to switch from a sealed state to an open state, the controller simultaneously controls the air pressure regulating component and the sterilization component to stop working. This avoids ineffective energy consumption caused by the air pressure regulation failing to maintain a sealed negative pressure after the chamber is opened, and also prevents the sterilization component from operating in an open environment, which could lead to sterilization failure and leakage of sterilization media. Furthermore, this reduces the idling losses of the components and improves the safety and economy of equipment operation.

[0016] In one embodiment, the controller is further configured to: When the door of the refrigeration equipment is detected to be open and the preservation chamber is in a sealed state, the sterilization component is controlled to continue working for a second preset time and then shut off.

[0017] In the above technical solution, the design of controlling the sterilization component to continue working for a second preset time before closing when the door of the refrigeration equipment is detected to be open but the preservation chamber is still in a sealed state can allow users to intuitively confirm that the sterilization function is operating normally through the short-term continuous operation of the sterilization component, which can improve the intuitive perception and experience effect during use.

[0018] In one embodiment, the controller is further configured to: The concentration of microorganisms inside the preservation chamber was measured when the preservation chamber was in a sealed state. If the microbial concentration is greater than the preset concentration threshold, the sterilization component is controlled to enter the preset deep sterilization mode; in the deep sterilization mode, the sterilization component runs continuously within each preset working cycle; Exit the deep sterilization mode after the third preset time.

[0019] In the above technical solution, by detecting the concentration of microorganisms inside the sealed preservation chamber, and when the concentration exceeds a preset threshold, the sterilization components are controlled to enter a deep sterilization mode that operates continuously for a preset working cycle. This can quickly and efficiently reduce the number of microorganisms and inhibit food spoilage. Simultaneously, the deep sterilization mode automatically exits after a third preset operating time, ensuring sufficient sterilization while avoiding excessive temperature rise, energy waste, and component damage caused by prolonged continuous operation of the sterilization components, thus improving equipment operational stability and food preservation safety.

[0020] In one embodiment, the controller is further configured to: If the air pressure regulating component is detected to be operating during the deep sterilization mode, the deep sterilization mode will be stopped. After the air pressure regulating component stops operating, the deep sterilization mode will continue to be executed.

[0021] In the above technical solution, by pausing sterilization upon detecting the activation of the air pressure regulation component during deep sterilization mode and resuming sterilization after its shutdown, staggered operation of the air pressure regulation and sterilization components can be achieved, avoiding energy waste caused by simultaneous operation of both. Furthermore, since the air pressure regulation operation time is usually short, it will not significantly affect the overall sterilization illumination time and sterilization effect, thus maintaining a stable low-oxygen antibacterial environment within the cavity and improving the economy and reliability of equipment operation.

[0022] Secondly, a control method for a refrigeration device is provided, applied to the refrigeration device of the first aspect, the method comprising: When the preservation chamber is in a sealed state, the chamber environment information is detected; the chamber environment information includes the first air pressure; the first air pressure refers to the actual air pressure value detected in the chamber in real time when the preservation chamber is in a sealed state. If the chamber environment information meets the preset air pressure regulation conditions, the air pressure regulation component is controlled to reduce the first air pressure to the first preset air pressure. After reducing the first air pressure to the first preset air pressure, the control air pressure regulating component stops operating, and the control sterilization component performs sterilization operation; The controller controls the sterilization components to perform sterilization operations and is configured as follows: Calculate the pressure fluctuation value between the first air pressure and the first preset air pressure; Obtain the sterilization start-up and stop time ratio corresponding to the air pressure fluctuation value; the sterilization start-up and stop time ratio is the ratio of the working time to the stop time of the sterilization component within a preset working cycle; The sterilization components are controlled to perform periodic sterilization operations based on the ratio of sterilization start-stop time.

[0023] Thirdly, a computer-readable storage medium is provided, which stores a computer program that, when run by a refrigeration device, causes the refrigeration device to perform the control method for the refrigeration device described in the second aspect.

[0024] Fourthly, a computer program product is provided, comprising: a computer program that, when run by a refrigeration device, causes the refrigeration device to execute the control method for the refrigeration device described in the second aspect.

[0025] It is understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0026] Figure 1 This is a timing interaction diagram of a control method for a refrigeration device provided in an embodiment of this application; Figure 2 This is a schematic diagram illustrating one implementation of a method for controlling a sterilization component in a refrigeration equipment control method according to an embodiment of this application; Figure 3 This is a schematic diagram illustrating one implementation of controlling a sterilization component in a control method for a refrigeration device according to another embodiment of this application; Figure 4 This is a schematic diagram illustrating one implementation of controlling the sterilization component in a control method for a refrigeration device according to another embodiment of this application; Figure 5 This is a schematic diagram illustrating the implementation of a control method for a refrigeration device according to an embodiment of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0028] Hereinafter, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0029] Specific details, such as particular system architectures and techniques, are set forth for illustrative purposes and not for limitation, to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted to avoid unnecessary detail that could obscure the description of this application.

[0030] With the development of refrigeration equipment preservation technology, vacuum preservation chambers have become the core preservation configuration of high-end refrigerators and other refrigeration equipment because they can form a closed low-oxygen / negative pressure environment, effectively inhibiting the respiration and oxidative deterioration of food. They are widely used for the long-term storage of fruits, vegetables and other fresh food.

[0031] Existing vacuum preservation chambers only create a relatively sealed negative pressure / low oxygen environment through air pressure regulation components, relying on low temperature and low oxygen conditions to inhibit microbial growth.

[0032] However, the low oxygen and low temperature of a vacuum preservation chamber can only inhibit the growth of anaerobic and conventional microorganisms, but cannot effectively kill microorganisms. Furthermore, the sealed structure of a vacuum drawer prevents moisture evaporating during food storage from dissipating effectively, causing it to accumulate and continuously increase humidity inside the drawer, creating a high-humidity, sealed storage environment. Consequently, in a high-humidity, sealed environment without sterilization protection, microorganisms easily proliferate, making it difficult to achieve long-term, stable preservation of food.

[0033] Therefore, in order to achieve stable preservation of food ingredients, please refer to... Figure 1 , Figure 1 This is a timing interaction diagram of a control method for a refrigeration device provided in an embodiment of this application, as shown below. Figure 1 As shown. A preservation chamber has a closed state and an open state. An air pressure regulating component, connected to the preservation chamber, is configured to regulate the air pressure in the preservation chamber in response to a controller command. A sterilization component is configured to perform a sterilization operation on the preservation chamber in response to a controller command.

[0034] In one embodiment, the aforementioned preservation chamber is an independently separated cavity (mostly a drawer-type structure) in the refrigeration equipment for the sealed storage of food. It is a space for achieving air pressure regulation, sterilization and preservation, and food storage, and can independently form a stable preservation environment.

[0035] Correspondingly, a sealed state means that the preservation chamber is completely closed and isolated from the outside environment and other storage spaces of the refrigeration equipment, forming an independent and closed environment within the chamber. This allows for the stable maintenance of preset air pressure and humidity, providing the basic conditions for air pressure regulation and sterilization.

[0036] The "open" state indicates that the preservation chamber is in an open and connected state, with air flowing between the chamber and the outside / internal space of the refrigeration equipment, and the air pressure has returned to normal, making it convenient for users to take out and put in food.

[0037] The aforementioned air pressure regulating components are connected to the preservation chamber and are controlled by the controller. These components (such as vacuum pumps, solenoid valves, and air pipelines) can regulate the air pressure inside the chamber through air extraction / decompression actions, creating a negative pressure / low oxygen preservation environment.

[0038] The aforementioned sterilization components are controlled by a controller and are integrated into the sterilization function components (such as ultraviolet modules, plasma modules, ozone modules, etc.) in the preservation chamber, which can perform sterilization treatment on the inside of the preservation chamber.

[0039] It should be noted that different sterilization components use different sterilization methods. For example, an ultraviolet module can sterilize by releasing ultraviolet light, while a plasma module can sterilize by releasing ions.

[0040] The sterilization process described above involves the sterilization components starting up under the controller's command. This process kills bacteria, mold, and other microorganisms in the preservation chamber through physical / chemical methods, eliminating conditions for microbial growth and preventing food spoilage.

[0041] As an example, the preservation chamber may include a sealing ring, a light guide glass, and an outer shell (from bottom to top), allowing light to enter the vacuum chamber from the outside. The light guide glass and sealing strip can achieve a gravity seal, with the height of the sealing strip higher than the height of the sealing strip mounting groove; the outer shell is installed using a snap-fit ​​mechanism for secondary sealing; finally, the entire vacuum drawer is sealed after the air pressure regulating component operates. The lamp panel is located between the light guide glass and the outer shell, and is snap-fitted onto the outer shell. The sterilization component can be a sterilization light source with a peak wavelength of 400~500nm. For example, the peak wavelength of the light source can be 400~420nm or 400~410nm, with a power of 0.5~3W, for example, 1~2W, and a radiation intensity >0.01mW / cm². The sterilization component contains at least one LED, and the surface of the LED encapsulation is mixed with phosphor, the type of phosphor being not specifically limited. After color mixing, the dominant wavelength is ≥440nm, and the peak wavelength remains unchanged.

[0042] Tests showed that the sterilization rate was greater than 90% after 1-4 hours of light exposure, and reached 99% after 4-8 hours, meeting national standards for sterilization appliances. Since the sterilization rate is positively correlated with the light dose, different light exposure durations can be applied within preset vacuum (pressure) ranges to adjust the light dose and achieve sterilization and preservation effects at different stages. Specifically, the sterilization components can be controlled through the following steps.

[0043] The controller is configured to perform the following steps: S101. When the preservation chamber is in a closed state, detect the chamber environment information of the preservation chamber.

[0044] The aforementioned chamber environment information includes the first air pressure.

[0045] In one embodiment, the chamber environment information refers to the set of parameters collected by the controller when the preservation chamber is in a sealed state, which can reflect the environmental state inside the preservation chamber. It is the basis for the controller to determine whether to start air pressure regulation and whether to perform sterilization operation.

[0046] In a sealed state, the controller can collect chamber environmental information in real time or at preset intervals. Alternatively, it can collect chamber environmental information immediately when the preservation chamber changes from an open state to a sealed state; there is no limitation on this.

[0047] In one embodiment, the aforementioned chamber environment information may also include parameters such as chamber humidity, chamber temperature, the interval between the last shutdown of the pressure regulating component, oxygen concentration in the chamber, and microbial concentration in the chamber, without limitation.

[0048] The aforementioned first air pressure refers to the actual air pressure value detected in the chamber in real time when the preservation chamber is in a sealed state. It is used to compare with the first preset air pressure to determine whether it is necessary to activate the air pressure regulating component to maintain a stable negative pressure preservation environment.

[0049] It should be noted that the detection methods typically differ depending on the environmental information within the chamber. For example, a pressure sensor installed within the preservation chamber directly collects the initial air pressure; a humidity sensor collects humidity data generated by the evaporation of moisture from the food; a temperature sensor collects the refrigeration temperature within the preservation chamber; a timing module inside the controller records the downtime interval of the pressure regulation component; an oxygen concentration sensor collects the oxygen concentration parameter within the chamber; and a microbial sensor monitors the microbial concentration within the chamber in real time.

[0050] In this embodiment, the method for detecting chamber environmental information is not limited.

[0051] S102. If the chamber environment information meets the preset air pressure regulation conditions, control the air pressure regulation component to reduce the first air pressure to the first preset air pressure.

[0052] In one embodiment, the air pressure regulation condition refers to a triggering criterion preset by the controller to determine whether a depressurization operation needs to be performed on the preservation chamber. When the chamber environment information matches the preset criterion, it is determined that the air pressure regulation condition is met.

[0053] The aforementioned first preset air pressure refers to the target negative pressure value set by the controller beforehand, which is required for the preservation chamber to achieve antibacterial and freshness preservation of food. When the preservation chamber is at the first preset pressure, a stable low-oxygen environment can be created, effectively inhibiting the reproduction of microorganisms and the respiration of food.

[0054] For example, the first preset air pressure can be 0.8 atm, where atm is the standard atmospheric pressure.

[0055] In one embodiment, when the first air pressure in the preservation chamber rises to a second preset air pressure, it can be determined that the chamber environment meets the air pressure regulation conditions. The second preset air pressure is greater than the first preset air pressure.

[0056] In one embodiment, the second preset air pressure is a critical air pressure threshold preset by the controller to trigger a pressure drop in the preservation chamber, and its value is greater than the first preset air pressure used for stable preservation. In a sealed state, if the first air pressure rises to the second preset air pressure, it can be determined that the negative pressure in the preservation chamber has decreased due to slight air leakage, food release, etc., and the air pressure has risen to a level that needs adjustment.

[0057] For example, the second preset air pressure can be 0.9 atm.

[0058] The rise in pressure within the preservation chamber from the first preset pressure to the second preset pressure is a natural pressure decay phenomenon caused by the characteristics of the sealed structure, the physiological activities of the food, and the operating status of the equipment. For example, the preservation chamber is a relatively sealed structure, not an absolute vacuum. After prolonged sealing, outside air will slowly seep in through gaps, causing the pressure inside the chamber to gradually rise. Alternatively, the food will continuously release gases through respiration during storage, and moisture will evaporate, producing water vapor, leading to an increase in the total amount of gas inside the chamber and a rise in pressure. Or, slight changes in the internal temperature of the refrigeration equipment will cause the gas inside the chamber to expand and contract, thus causing a rise in pressure. Alternatively, the negative pressure environment of the preservation chamber cannot be maintained permanently; as the downtime increases, the negative pressure will slowly dissipate, and the pressure will gradually rise from the first preset pressure to the second preset pressure.

[0059] It should be noted that the effect of inhibiting microbial growth will decrease when the first preset air pressure rises back to the second preset air pressure. Therefore, it is necessary to control the air pressure regulating component to reduce the first air pressure to the first preset air pressure.

[0060] In this embodiment, using the second preset air pressure as the automatic trigger threshold, the state of negative pressure decay failure in the preservation chamber can be accurately identified, and the chamber air pressure can be restored to the first preset air pressure in a timely manner. This ensures a continuous and stable low-oxygen antibacterial environment, preventing a decrease in microbial inhibition effect due to air pressure recovery, and guaranteeing that the vacuum preservation effect is not diminished.

[0061] In another embodiment, the chamber environment information also includes the interval duration during which the pressure regulating component stops working. In this case, the controller can also determine that the chamber environment information meets the pressure regulating conditions when the interval duration is greater than or equal to a first preset duration.

[0062] In one embodiment, the aforementioned interval duration refers to the continuous time length between the last time the pressure regulating component completes depressurization and stops operating and the current detection time of the controller. It is counted in real time by the internal timing module of the controller and belongs to the time-related parameters in the chamber environment information.

[0063] The aforementioned first preset duration is the maximum time threshold that the controller pre-sets for maintaining a stable negative pressure preservation environment in a sealed state within the preservation chamber. This first preset duration can be set based on measured data such as seal leakage and food gas release rates.

[0064] For example, the first preset duration can be 9 hours or 14 hours, and there is no limitation thereto.

[0065] It should be noted that during the sealed and static period in the preservation chamber, even if no significant exceedance of the first air pressure (reaching the second preset air pressure) is detected, the negative pressure inside the chamber will slowly decrease and the oxygen concentration will gradually rise due to micro-leakage from the seal, continuous gas release from the food's respiration, and gas production from moisture evaporation. Furthermore, when the static period reaches or exceeds the first preset period, it indicates that the low-oxygen antibacterial environment inside the chamber has likely failed. Therefore, it is necessary to restart the air pressure regulation component to reduce the pressure and restore a stable negative pressure for preservation. Subsequently, the controller can determine that the air pressure regulation conditions have been met.

[0066] In this embodiment, the interval between when the pressure regulating component stops working is included in the pressure regulation condition. When the interval is greater than or equal to a first preset time, the pressure regulation condition is determined to be met. Therefore, the negative pressure attenuation caused by micro-leakage in the preservation chamber and gas release from the food can be proactively repaired at regular intervals. A stable low-oxygen antibacterial environment can be maintained in advance without waiting for a significant increase in pressure, preventing the preservation effect from gradually declining over time and ensuring a more stable food preservation state.

[0067] In another embodiment, the controller may determine that the air pressure regulation condition is met when the first air pressure rises to the second preset air pressure and / or the interval is greater than or equal to the first preset time.

[0068] Based on the above example, it can be assumed that when the preservation chamber is in a sealed state, if the first air pressure does not rise to the second preset air pressure and the interval is less than the first preset time, it can be determined that the chamber environment information does not meet the air pressure regulation requirements. In this case, it is not necessary to control the operation of the air pressure component.

[0069] In another embodiment, by combining parameters such as chamber humidity and oxygen concentration, when the chamber humidity / oxygen concentration is greater than a preset threshold, it is determined that the air pressure regulation condition is met.

[0070] In this embodiment, the method for determining whether the air pressure regulation conditions are met is not limited.

[0071] In one embodiment, the controller can control the pressure regulating component to reduce the first air pressure to a first preset air pressure through closed-loop feedback, timing control, threshold trigger control, or other methods. For example, during the process of controlling the pressure regulating component to perform a depressurization operation on the preservation chamber, the controller continuously receives the first air pressure detected in real time within the chamber and compares it with the first preset air pressure. When the first air pressure is detected to have dropped to the first preset air pressure, the controller immediately sends a stop command to the pressure regulating component, stabilizing the air pressure within the chamber at the first preset air pressure, thus completing the depressurization control. When the first air pressure is detected not to have dropped to the first preset air pressure, the depressurization operation continues.

[0072] It should be noted that the maximum value of the first air pressure is usually the atmospheric pressure when the preservation chamber switches from the open state to the closed state. Based on this, the time required for the air pressure regulating component to adjust the atmospheric pressure to the first preset air pressure can be determined, which is its maximum operating time. This maximum operating time is usually 10 minutes. In this embodiment, the actual operating time of the air pressure regulating component is generally 4 to 10 minutes.

[0073] S103. After reducing the first air pressure to the first preset air pressure, control the air pressure regulating component to stop operating and control the sterilization component to perform sterilization operation.

[0074] In one embodiment, within a sealed preservation chamber, the lower the internal pressure (i.e., the further away from atmospheric pressure), the lower the oxygen concentration. For example, at atmospheric pressure, the oxygen concentration is 21%, approximately 18.7% at 0.9 atm, 15.8% at 0.8 atm, and 12.5% ​​at 0.6 atm. Lower oxygen concentrations strongly inhibit the growth of aerobic microorganisms, but cannot suppress the growth of anaerobic and facultative anaerobic microorganisms, still leading to food spoilage. Therefore, sterilization is necessary to thoroughly kill all types of microorganisms within the chamber.

[0075] The sterilization process has already been explained above. For example, sterilization can be carried out using ultraviolet light, plasma, ozone, negative ions, etc., which will not be described in detail here.

[0076] It should be noted that starting the sterilization process after the pressure regulating component has stopped operating avoids interference between the two components operating simultaneously, ensuring equipment stability and reducing energy consumption. In other words, the sterilization component stops operating when the pressure regulating component is running, and vice versa.

[0077] In this embodiment, the coordinated control of the pressure regulation component and the sterilization component enables step-by-step synergistic effects. First, by monitoring the environmental information within the sealed preservation chamber, the state of the chamber can be accurately understood, providing reliable data support for pressure regulation. Then, when the pressure regulation conditions are met, the initial pressure within the chamber is reduced to a first preset pressure, creating a stable low-oxygen preservation environment that effectively inhibits food respiration and microbial growth, delaying food oxidation and spoilage. Finally, after pressure regulation is complete and the pressure regulation component stops operating, the sterilization component is activated. This directly kills residual microorganisms within the chamber, forming a dual protection of antibacterial and sterilization, addressing the problem of microbial growth and food spoilage in the sealed, high-humidity vacuum preservation chamber. Thus, both antibacterial and sterilization ensure the preservation effect of the food, achieving long-term stable storage. Furthermore, the pressure regulation and sterilization operations are performed in shifts, avoiding energy waste caused by simultaneous operation of both components. This effectively reduces equipment energy consumption and improves operational economy while ensuring preservation and sterilization effects.

[0078] In another embodiment, the controller can also be based on, for example... Figure 2 The steps S201-S203 shown control the sterilization components to perform the sterilization operation. Details are as follows: S201. Calculate the pressure fluctuation value between the first air pressure and the first preset air pressure.

[0079] In one embodiment, the air pressure fluctuation value is the difference between the first air pressure in the preservation chamber before the air pressure regulating component operates and the first preset air pressure after operation, which is used to quantify the change range of air pressure in the chamber during the air pressure regulation process.

[0080] It should be noted that the air pressure fluctuation value can directly represent the magnitude of the air pressure change in the preservation chamber before and after the air pressure regulating component is working, and can intuitively reflect the degree of attenuation of the negative pressure environment inside the chamber.

[0081] Understandably, larger pressure fluctuations indicate more severe pressure decay and more significant disruption to the low-oxygen antibacterial environment. In other words, greater changes in the storage environment of the preservation chamber lead to more intense microbial activity. Conversely, smaller pressure fluctuations indicate a more stable internal pressure, requiring only minor adjustments to restore the preservation pressure. This means less change in the storage environment of the preservation chamber results in more stable microbial activity.

[0082] S202. Obtain the sterilization start-up and shutdown time ratio corresponding to the air pressure fluctuation value.

[0083] The sterilization start-stop time ratio is the ratio of the working time to the stop time of the sterilization component within a preset working cycle.

[0084] In one embodiment, the preset working cycle is the total time for the sterilization component to complete one "working + stopping" cycle, which is preset by the controller and serves as the basic time unit for calculating the sterilization start-stop time ratio.

[0085] The above sterilization start-stop time ratio is the ratio of the working time to the stopping time of the sterilization component within a preset working cycle. The larger the ratio, the higher the sterilization intensity per unit cycle.

[0086] As an example, the controller can directly look up the corresponding sterilization start-up and shutdown time ratio based on a preset air pressure fluctuation value matching table; or, it can calculate it based on a preset calculation formula, such as sterilization start-up and shutdown time ratio = preset coefficient × air pressure fluctuation value + benchmark value. Alternatively, the air pressure fluctuation value can be divided into three levels: small / medium / large, corresponding to fixed sterilization start-up and shutdown time ratios for low / medium / high levels, respectively.

[0087] As an example, assuming a preset working cycle of 10 minutes, when the air pressure fluctuation is small (e.g., 0.1 atm), the sterilization start-stop time ratio can be 1:4, i.e., 2 minutes of operation followed by 8 minutes of shutdown. When the air pressure fluctuation is moderate (e.g., 0.2 atm), the sterilization start-stop time ratio can be 1:1, i.e., 5 minutes of operation followed by 5 minutes of shutdown. When the air pressure fluctuation is large (e.g., 0.3 atm), the sterilization start-stop time ratio is 4:1, i.e., 8 minutes of operation followed by 2 minutes of shutdown.

[0088] In one embodiment, the sterilization start-stop time ratio is positively correlated with the air pressure fluctuation value. That is, the greater the air pressure fluctuation value, the longer the sterilization component operates within a preset working cycle, and the greater the sterilization start-stop time ratio. Furthermore, it can adaptively match the degree of air pressure decay in the preservation chamber; the more severe the air pressure decay, the higher the sterilization intensity, ensuring sterilization effectiveness while avoiding ineffective energy consumption.

[0089] S203. Based on the ratio of sterilization start and stop times, control the sterilization components to perform periodic sterilization operations.

[0090] In one embodiment, after obtaining the sterilization start-stop duration ratio, the sterilization components can be periodically controlled to run and stop, and sterilization operations can be performed during operation.

[0091] In this embodiment, by calculating the pressure fluctuation values ​​before and after pressure adjustment within the preservation chamber, the corresponding sterilization start-stop time ratio is adaptively matched, and the sterilization components are controlled to perform periodic sterilization based on this ratio. This allows for dynamic adjustment of the sterilization intensity according to the degree of pressure decay in the preservation chamber. Furthermore, it accurately adapts to the risk of microbial growth under different negative pressure decay states, not only enhancing the sterilization and preservation effect of the sealed preservation chamber but also avoiding ineffective energy consumption caused by continuous sterilization. This achieves an optimal balance between sterilization effect and equipment operating energy consumption, ensuring long-term stable preservation of food.

[0092] It should be noted that when the preservation chamber switches from a sealed state to an open state, it is directly connected to the outside air, completely destroying the sealed negative pressure environment. At this time, the air pressure regulating component will be unable to maintain the negative pressure, resulting in wasted energy. Simultaneously, the sterilization component operates in an open environment, causing a significant decrease in sterilization effectiveness due to air convection, and there is also a potential safety hazard of sterilization medium leakage.

[0093] Based on this, in one embodiment, when the fresh-keeping chamber is detected to switch from a closed state to an open state, the controller can control the air pressure regulating component and the sterilization component to stop working.

[0094] It should be noted that the pressure regulating component and the sterilization component do not operate simultaneously. Therefore, when the preservation chamber is detected to switch from a closed state to an open state, if the pressure regulating component operates to reduce pressure, the controller will stop the sterilization component from operating. If the sterilization component performs sterilization, it will stop the pressure regulating component from operating.

[0095] In this embodiment, when the preservation chamber is detected to switch from a sealed state to an open state, the controller simultaneously controls the air pressure regulating component and the sterilization component to stop working. This avoids ineffective energy consumption due to the air pressure regulation failing to maintain a sealed negative pressure after the chamber is opened, and also prevents the sterilization component from operating in an open environment, which could lead to sterilization failure and leakage of sterilization media. Furthermore, this reduces the idling losses of the components and improves the safety and economy of equipment operation.

[0096] It should be noted that when the preservation chamber switches from an open state to a closed state, the chamber is now in a closed state, and step S101 described above should be executed. Furthermore, since the chamber switches from an open state to a closed state, the first air pressure in the preservation chamber can be considered to be atmospheric pressure, which is greater than or equal to the second preset air pressure. Therefore, it can be determined that the chamber environment meets the air pressure regulation conditions. Moreover, the air pressure fluctuation value between atmospheric pressure and the first preset air pressure differs significantly; based on this, a high sterilization start-stop time ratio will be used to control the sterilization components to perform periodic sterilization operations.

[0097] It should be added that, taking the germicidal lamp as an example of a sterilization component, test results show that when the germicidal lamp power is 1~2W, the sterilization rate can reach over 90% after 1~4 hours of operation, over 99% after 4~8 hours, and over 99.99% after 8 hours, all meeting national standards. Therefore, the above durations can be used as the benchmark operating time for the germicidal lamp. Furthermore, since LED operation generates heat, in this embodiment, the lamp illumination time is interleaved with the air pressure regulation component's operating time. Periodic irradiation based on the sterilization start-stop time ratio effectively suppresses temperature rise while ensuring sterilization effectiveness. Under illumination, the temperature rise on the inner surface of the light guide glass can be controlled within 0.5℃.

[0098] Furthermore, under the above parameter settings, the preservation of food (e.g., fresh beef) was verified: after being stored in the above manner for 7-10 days, the total bacterial count of the beef was 1.26 × 10⁻⁶. 4 CFU / g, the total bacterial count under normal preservation mode is 4.90×10⁻⁶. 6 The CFU / g and TVBN value of the beef are 10.36 mg / 100g, which meets the national standard freshness limit of ≤15 mg / 100g, while the TVBN value under normal preservation mode is 18.76 mg / 100g. This embodiment can maintain good sensory quality and aroma of beef and significantly improve the preservation effect of the refrigerator.

[0099] In another embodiment, when only the door of the refrigeration equipment is detected to be open while the preservation chamber is in a closed state, the controller can control the sterilization component to continue working for a second preset time and then shut it off.

[0100] In one embodiment, the second preset duration is a delay shutdown duration preset by the controller, for example, set to 2 to 10 seconds.

[0101] It should be noted that in this embodiment, when the door of the refrigeration equipment is detected to be open but the preservation chamber is still in a closed state, the design of controlling the sterilization component to continue working for a second preset time before closing can allow the user to intuitively confirm that the sterilization function is operating normally through the short-term continuous operation of the sterilization component, which can improve the intuitive perception and experience effect during use.

[0102] In another embodiment, when the preservation chamber is sealed, relying solely on a negative pressure, low-oxygen environment can only inhibit some aerobic microorganisms. Anaerobic and facultative anaerobic microorganisms carried by the food or remaining in the chamber may still multiply in large numbers, leading to excessive microbial concentrations within the chamber and consequently causing food spoilage. Furthermore, the aforementioned method of periodic sterilization based on the ratio of sterilization start-stop times cannot quickly address situations with excessively high microbial concentrations.

[0103] Therefore, in order to ensure efficient sterilization and preserve the freshness of food, the controller can also adjust according to... Figure 3 The steps S301-S303 shown represent sterilization procedures. Details are as follows: S301. When the preservation chamber is in a closed state, detect the concentration of microorganisms in the preservation chamber.

[0104] In one embodiment, the aforementioned microbial concentration refers to the total number of microorganisms such as bacteria, molds, and yeasts per unit volume within the sealed space of the preservation chamber. It is an indicator for measuring the cleanliness of the chamber and the risk of food spoilage. Typically, it is characterized by colony count; a higher concentration indicates more severe microbial growth and a greater risk of food spoilage.

[0105] In one embodiment, the controller can be based on an optical sensing sensor, utilizing the principles of laser scattering and fluorescence excitation to capture the optical characteristics of microbial particles within the cavity and calculate the microbial concentration in real time. Alternatively, the microbial concentration can be indirectly derived by establishing a conversion model based on the detection of odorous gases, volatile organic compounds, and carbon dioxide concentrations produced by microbial reproduction and metabolism.

[0106] In this embodiment, the method for detecting microbial concentration is not limited.

[0107] It should be noted that the preservation chamber remains sealed, isolating it from external air and microorganisms, ensuring an independent and stable testing environment. In this state, the controller collects real-time data on the microbial concentration within the chamber, providing accurate information on the actual microbial growth level. This data serves as a basis for subsequent determinations of whether the preset concentration threshold has been exceeded and whether the deep sterilization mode should be triggered.

[0108] S302. If the microbial concentration is greater than the preset concentration threshold, the sterilization component is controlled to enter the preset deep sterilization mode.

[0109] In the deep sterilization mode, the sterilization components operate continuously within each preset working cycle.

[0110] In one embodiment, the preset concentration threshold is a critical safe concentration value for microorganisms in the preservation chamber preset by the controller, serving as a standard for determining whether microorganisms are proliferating beyond the limit. When the detected microbial concentration is lower than the preset concentration threshold, it indicates that the microbial content in the chamber is within a safe and controllable range. At this time, preservation can be maintained by relying on the aforementioned low-oxygen antibacterial and periodic sterilization operations.

[0111] However, when the concentration of microorganisms is greater than or equal to the preset concentration threshold, it indicates that microorganisms are multiplying in large quantities, posing a risk of food spoilage, and an enhanced sterilization mechanism needs to be activated.

[0112] For example, the aforementioned preset concentration threshold can be 5 × 10⁻⁶. 5 CFU / g ~ 1×10 6 CFU / g, there is no limit to this.

[0113] In one embodiment, the aforementioned deep sterilization mode differs from the sterilization mode that controls the sterilization components to perform periodic sterilization operations based on the ratio of sterilization start-stop time. It should be noted that the aforementioned periodic start-stop sterilization uses a cyclical approach of alternating operation and rest, while the deep sterilization mode is uninterrupted sterilization without stopping the machine, eliminating the start-stop interval. Throughout the entire work cycle, the sterilization components operate continuously to rapidly kill excessive microorganisms and quickly bring the concentration of microorganisms in the cavity back to a safe range. That is, it operates continuously within each work cycle.

[0114] S303. Exit the deep sterilization mode after the third preset time.

[0115] In one embodiment, the aforementioned third preset duration is a limited operating time of the deep sterilization mode preset by the controller, used to specify the maximum duration for which the sterilization component can continuously and intensely sterilize. Once the sterilization component enters the deep sterilization mode and runs continuously for this duration, it can automatically exit the non-stop sterilization state and return to the aforementioned periodic sterilization mode.

[0116] It should be noted that setting the third preset duration can not only ensure the sterilization effect of deep sterilization and inhibit the excessive growth of microorganisms, but also avoid the problems of excessive temperature rise, energy waste and accelerated aging of components caused by long-term uninterrupted operation of sterilization components.

[0117] For example, the aforementioned third preset duration can be any duration between 12h and 24h.

[0118] In this embodiment, by detecting the concentration of microorganisms within the sealed preservation chamber, and when the concentration exceeds a preset threshold, the sterilization component is controlled to enter a deep sterilization mode that operates continuously for a preset work cycle. This rapidly and efficiently reduces the number of microorganisms and inhibits food spoilage. Simultaneously, the deep sterilization mode automatically exits after a third preset operating time, ensuring sufficient sterilization while avoiding excessive temperature rise, energy waste, and component damage caused by prolonged continuous operation of the sterilization component. This improves equipment operational stability and food preservation safety.

[0119] In another embodiment, if the air pressure inside the preservation chamber rises during the deep sterilization mode of the sterilization component, the oxygen concentration inside the chamber will increase accordingly, significantly weakening the low-oxygen antibacterial effect. Consequently, it is easier for microbial colonies to proliferate, and relying solely on the sterilization component for sterilization is insufficient to effectively control bacteria.

[0120] Therefore, in order to better preserve food, the controller can also perform actions such as... Figure 4 The steps S401-S402 shown control the sterilization assembly and the air pressure regulation assembly. Details are as follows: S401. If the operation of the air pressure regulating component is detected during the deep sterilization mode, the deep sterilization mode will be stopped.

[0121] S402. After the air pressure regulating component stops operating, continue to execute the deep sterilization mode.

[0122] It should be noted that when the preservation chamber is sealed and the sterilization components are continuously eliminating microorganisms in deep sterilization mode, the controller can monitor the operating status of the air pressure regulation component. When the chamber environment meets the preset air pressure regulation conditions, the controller controls the air pressure regulation component to operate. Furthermore, the controller can immediately pause the current deep sterilization mode, stopping the sterilization components and saving equipment energy.

[0123] It should be noted that, since the air pressure regulating component operates for a short period, a brief interruption of the sterilization process will not significantly affect the overall sterilization illumination duration. Therefore, by reducing power consumption through staggered operation, and after the air pressure regulating component has completed air pressure regulation and stabilized the low-oxygen environment in the chamber, the deep sterilization mode can be resumed, ensuring that the overall sterilization effect is not affected while saving energy.

[0124] In another embodiment, the controller may also consider the microorganisms to be controllable when it detects that the microbial concentration is less than or equal to a preset concentration threshold. Consequently, it will stop executing the deep sterilization mode.

[0125] Based on the above description, in this embodiment, by pausing sterilization upon detecting the activation of the air pressure regulation component during deep sterilization mode operation and resuming sterilization after its shutdown, staggered operation of the air pressure regulation and sterilization components can be achieved, avoiding energy waste caused by simultaneous operation of both. Furthermore, since the air pressure regulation operation time is typically short, it will not significantly affect the overall sterilization illumination time and sterilization effect, thus maintaining a stable low-oxygen antibacterial environment within the cavity and improving the economy and reliability of equipment operation.

[0126] To more clearly illustrate the solutions in this application, specific embodiments are used below to explain the solutions. See details below. Figure 5 , Figure 5 This is a schematic diagram illustrating the implementation of a control method for a refrigeration device according to an embodiment of this application. In this embodiment, a pressure regulating component is used as a vacuum pump, a sterilization component is used as a germicidal lamp, a first preset pressure is 0.8 atm, a second preset pressure is 0.9 atm (the pressure rise trigger threshold is greater than the first preset pressure of 0.8), a first preset duration is 9 hours, and the preset working cycle of the sterilization component is 10 minutes.

[0127] First, the controller can detect the status of the preservation chamber and, when the preservation chamber is in a sealed state, collect the initial air pressure and record the interval between when the air pressure regulating component stops working. The preset air pressure regulating condition is determined to be met if any of the following conditions are satisfied: Condition 1: The first air pressure rises to 0.9 (second preset air pressure); Condition 2: The interval after the air pressure regulating component stops is ≥ 9h (first preset time).

[0128] After the air pressure regulating component adjusts the first air pressure to the first preset air pressure of 0.8 atm, the air pressure fluctuation value (first air pressure before adjustment) is calculated. First preset air pressure 0.8) Based on the built-in mapping relationship between air pressure fluctuation values ​​and sterilization start-up and stop time ratios, the current sterilization start-up and stop time ratios are determined: Small fluctuation range: Sterilization start-stop time ratio 1:4 → Within a preset work cycle, work for 2 minutes and stop for 8 minutes; Medium fluctuation range: Sterilization start-stop time ratio 1:1 → within a preset work cycle, work for 5 minutes and stop for 5 minutes; Large fluctuation range: Sterilization start-stop time ratio 4:1 → Within a preset work cycle, work for 8 minutes and stop for 2 minutes.

[0129] Based on the above sterilization start-stop time ratio, the sterilization components are controlled to start and stop cyclically in 10-minute cycles to perform periodic sterilization.

[0130] During the sterilization process, if the fresh-keeping chamber is detected to switch from a closed state to an open state (i.e., the fresh-keeping chamber is in an open state), the controller can immediately and synchronously control the air pressure regulating component and the sterilization component to stop working, so as to avoid ineffective operation, energy waste and sterilization failure.

[0131] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0132] In another embodiment, such as Figure 1 As shown, the refrigeration equipment can be used to implement the control method of the refrigeration equipment described in the above method embodiments.

[0133] The refrigeration equipment may include one or more memories storing programs that can be run by a controller to generate instructions, causing the controller to execute the control method of the refrigeration equipment described in the above method embodiments according to the instructions.

[0134] Optionally, the memory may also store data. Optionally, the controller may also read data stored in the memory, which may be stored at the same memory address as the program, or the data may be stored at a different memory address than the program.

[0135] The controller and memory can be set up separately or integrated together; for example, integrated on the system on chip (SOC) of the terminal device.

[0136] This application also provides a computer program product that, when executed by a controller, implements the control method of a refrigeration device according to any method embodiment of this application.

[0137] The computer program product can be stored in memory, for example, as a program. The program is eventually converted into an executable object file that can be executed by the controller after processes such as preprocessing, compilation, assembly, and linking.

[0138] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a computer, implements the control method of the refrigeration device in any of the method embodiments of this application. The computer program may be a high-level language program or an executable object program.

[0139] The computer-readable storage medium is, for example, memory. Memory can be volatile or non-volatile, or it can include both volatile and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which serves as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0140] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0141] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0142] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0143] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0144] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of modules is merely a logical functional division, and there may be other division methods in actual implementation; for example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0145] The modules described as separate components may or may not be physically separate. Similarly, the components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0146] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0147] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A refrigeration device, characterized in that, include: The preservation chamber has both a sealed and an open state; A pressure regulating component, connected to the preservation chamber, is configured to: regulate the pressure of the preservation chamber in response to a command from the controller; The sterilization component is configured to perform a sterilization operation on the preservation chamber in response to a command from the controller. The controller is configured as follows: When the preservation chamber is in the sealed state, the chamber environment information of the preservation chamber is detected; the chamber environment information includes a first air pressure; the first air pressure refers to the actual air pressure value detected in the chamber in real time when the preservation chamber is in the sealed state. If the chamber environment information meets the preset air pressure regulation conditions, then control the air pressure regulation component to reduce the first air pressure to the first preset air pressure; After reducing the first air pressure to the first preset air pressure, the air pressure regulating component is controlled to stop operating, and the sterilization component is controlled to perform sterilization operation; The controller controls the sterilization component to perform a sterilization operation and is configured as follows: Calculate the pressure fluctuation value between the first air pressure and the first preset air pressure; Obtain the sterilization start-up and stop time ratio corresponding to the air pressure fluctuation value; the sterilization start-up and stop time ratio is the ratio of the working time to the stop time of the sterilization component within a preset working cycle; The sterilization components are controlled to perform periodic sterilization operations based on the sterilization start-stop time ratio.

2. The refrigeration equipment according to claim 1, characterized in that, The controller is also configured to: When the first air pressure in the preservation chamber rises to the second preset air pressure, it is determined that the chamber environment information meets the air pressure regulation conditions; the second preset air pressure is greater than the first preset air pressure.

3. The refrigeration equipment according to claim 1, characterized in that, The chamber environment information also includes the interval duration at which the pressure regulating component stops operating, and the controller is further configured to: When the interval duration is greater than or equal to the first preset duration, it is determined that the chamber environment information meets the air pressure regulation conditions.

4. The refrigeration equipment according to claim 1, characterized in that, The ratio of sterilization start-up and stop times is positively correlated with the air pressure fluctuation value.

5. The refrigeration equipment according to any one of claims 1-4, characterized in that, The controller is also configured to: When the preservation chamber is detected to switch from the sealed state to the open state, the pressure regulating component and the sterilization component are controlled to stop working.

6. The refrigeration equipment according to any one of claims 1-4, characterized in that, The controller is also configured to: When the door of the refrigeration equipment is detected to be open and the preservation chamber is in the sealed state, the sterilization component is controlled to continue working for a second preset time and then shut down.

7. The refrigeration equipment according to any one of claims 1-4, characterized in that, The controller is also configured to: When the preservation chamber is in the sealed state, the concentration of microorganisms in the preservation chamber is detected; If the concentration of microorganisms is greater than a preset concentration threshold, the sterilization component is controlled to enter a preset deep sterilization mode; in the deep sterilization mode, the sterilization component runs continuously within each preset working cycle; Exit the deep sterilization mode after the third preset time.

8. The refrigeration equipment according to claim 7, characterized in that, The controller is also configured to: If the air pressure regulating component is detected to be operating during the deep sterilization mode, the deep sterilization mode will be stopped. After the air pressure regulating component stops operating, the deep sterilization mode will continue to be executed.

9. A control method for a refrigeration device, characterized in that, Applied to refrigeration equipment, the method includes: When the preservation chamber is in a sealed state, the chamber environment information of the preservation chamber is detected; the chamber environment information includes a first air pressure; the first air pressure refers to the actual air pressure value detected in the chamber in real time when the preservation chamber is in the sealed state. If the chamber environment information meets the preset air pressure regulation conditions, then control the air pressure regulation component to reduce the first air pressure to the first preset air pressure; After reducing the first air pressure to the first preset air pressure, the air pressure regulating component is controlled to stop operating, and the sterilization component is controlled to perform sterilization operation; Controlling the sterilization component to perform a sterilization operation includes: Calculate the pressure fluctuation value between the first air pressure and the first preset air pressure; Obtain the sterilization start-up and stop time ratio corresponding to the air pressure fluctuation value; the sterilization start-up and stop time ratio is the ratio of the working time to the stop time of the sterilization component within a preset working cycle; The sterilization components are controlled to perform periodic sterilization operations based on the sterilization start-stop time ratio.

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