Gas supply device for a refrigerator, gas supply control method and refrigerator

Abstract

This application provides a gas supply device, a gas supply control method, and a refrigerator for use in a refrigerator. The refrigerator includes a first storage compartment and a second storage compartment. The gas supply device includes: a nitrogen generating module with a nitrogen vent and an oxygen vent; and a sterilizing gas generating module with an input port and an output port, the input port being connected to the oxygen vent. The output port is used to connect to the first storage compartment, and the nitrogen vent is used to connect to the second storage compartment. This method solves the problem of high cost in existing gas supply devices.

Description

Technical Field

[0001] This application relates to the technical field of refrigerators, and in particular to a gas supply device, a gas supply control method, and a refrigerator. Background Technology

[0002] With the rapid advancement of technology, the home appliance industry has made significant progress, and refrigerator technology has been further upgraded, with corresponding moisturizing, active sterilization, and automatic deodorization technologies widely applied. However, in these technologies, refrigerators typically have two storage compartments with different storage functions. Therefore, to maintain the respective storage functions of each compartment, two independent gas supply systems are usually required to provide the corresponding gas to each compartment, which is costly. Summary of the Invention

[0003] This application provides a gas supply device, a gas supply control method, and a refrigerator for use in refrigerators, in order to solve the problem of high cost of gas supply devices in the prior art.

[0004] In a first aspect, this application provides a gas supply device for a refrigerator, the refrigerator including a first storage compartment and a second storage compartment, the gas supply device including: a nitrogen generating module, the nitrogen generating module having a nitrogen vent and an oxygen vent; a sterilizing gas generating module, the sterilizing gas generating module having an input port and an output port, the input port being connected to the oxygen vent; wherein, the output port is used to connect to the first storage compartment, and the nitrogen vent is used to connect to the second storage compartment.

[0005] In some embodiments, the sterilizing gas generating module includes an ozone generator, the input port of which is connected to an oxygen exhaust port, and the output port of which is connected to a first storage chamber; or, the sterilizing gas generating module includes an active oxygen generator, the input port of which is connected to an oxygen exhaust port, and the output port of which is connected to a first storage chamber.

[0006] In some embodiments, the gas supply device further includes a three-way valve, which is connected to the oxygen vent and the oxygen inlet respectively, and is also used to connect to the outside of the refrigerator.

[0007] In some embodiments, the gas supply device further includes a gas circulation module for connecting a first storage chamber and / or a second storage chamber; the gas circulation module is connected to an output port; and / or, the nitrogen generation module further includes an inlet port connected to the gas circulation module.

[0008] In some embodiments, the gas supply device further includes a pressure-limiting check valve disposed at one end of the gas circulation module facing the second storage chamber, and the pressure-limiting check valve is used to allow gas from the second storage chamber to flow to the gas circulation module.

[0009] In some embodiments, the device further includes a control module electrically connected to the nitrogen generation module and the sterilization gas generation module, respectively; the gas supply device for the refrigerator further includes a first detection module electrically connected to the control module, the first detection module being used to detect the opening duration of the first storage compartment; and / or, the gas supply device for the refrigerator further includes a second detection module electrically connected to the control module, the second detection module being used to detect the opening duration of the second storage compartment.

[0010] Secondly, this application provides a refrigerator, comprising: a first storage compartment; a second storage compartment; and a gas supply device as provided in the first aspect, the gas supply device being connected to the first storage compartment and the second storage compartment respectively.

[0011] Thirdly, this application provides a gas supply control method for a refrigerator, applied to the gas supply device provided in the first aspect. The method includes: detecting whether a first storage compartment and a second storage compartment are in an open state; if the first storage compartment is in an open state, controlling a nitrogen generation module and a sterilization gas generation module to operate; if the second storage compartment is in an open state, controlling the nitrogen generation module to operate.

[0012] In some embodiments, if the first storage chamber is in an open state, the nitrogen generation module and the sterilization gas generation module are controlled to operate, including: obtaining the opening duration of the first storage chamber and controlling the nitrogen generation module and the sterilization gas generation module to operate according to the opening duration of the first storage chamber.

[0013] In some embodiments, controlling the operation of the nitrogen generation module and the sterilization gas generation module based on the opening duration of the first storage chamber includes: obtaining the gas leakage amount based on the opening duration of the first storage chamber; determining the operating duration of the nitrogen generation module and the sterilization gas generation module based on the gas leakage amount; and controlling the operation of the nitrogen generation module and the sterilization gas generation module based on the operating duration.

[0014] In some embodiments, controlling the nitrogen generation module and the sterilization gas generation module to operate includes: controlling the nitrogen generation module to generate oxygen-enriched gas and discharge it to the sterilization gas generation module, and controlling the nitrogen generation module to generate nitrogen-enriched gas and discharge it to the second storage compartment or the outside of the refrigerator; controlling the sterilization gas generation module to generate sterilization gas and discharge it into the first storage compartment.

[0015] In some embodiments, if the second storage chamber is in an open state, the nitrogen generation module is controlled to operate, including: controlling the nitrogen generation module to operate according to a preset duration, and controlling the nitrogen generation module to generate nitrogen-rich gas and discharge it into the second storage chamber.

[0016] In some embodiments, the gas supply device further includes a gas circulation module; if the first storage chamber is in an open state, before controlling the nitrogen generation module and the sterilization gas generating module to operate, the device includes: controlling the gas circulation module to operate and venting the gas in the first storage chamber to the nitrogen generation module; and / or, if the second storage chamber is in an open state, before controlling the nitrogen generation module to operate, the device includes: controlling the gas circulation module to operate and venting the gas in the second storage chamber to the nitrogen generation module, so that the second storage chamber maintains a preset pressure.

[0017] In some embodiments, the method further includes: obtaining the continuous shutdown duration of the first storage chamber and the second storage chamber; if the continuous shutdown duration reaches a preset shutdown duration, controlling the nitrogen generation module to operate.

[0018] In some embodiments, if the continuous shutdown duration reaches a preset shutdown duration, the nitrogen generation module is controlled to operate, including: obtaining the gas leakage amount based on the continuous shutdown duration of the first storage chamber, determining the operating duration of the nitrogen generation module and the sterilization gas generation module based on the gas leakage amount, and controlling the nitrogen generation module and the ozone generation module to operate based on the operating duration.

[0019] This application provides a gas supply device, a gas supply control method, and a refrigerator for a refrigerator. The gas supply device includes a nitrogen generating module and a sterilizing gas generating module. The nitrogen generating module has a nitrogen vent and an oxygen vent, and the sterilizing gas generating module has an input port and an output port. The input port of the sterilizing gas generating module is connected to the oxygen vent of the nitrogen generating module. The output port of the sterilizing gas generating module is connected to a first storage compartment, and the nitrogen vent of the nitrogen generating module is connected to a second storage compartment. Based on this, the oxygen-enriched gas generated by the nitrogen generating module beyond its nitrogen-enriched gas production can be discharged into the sterilizing gas generating module through the oxygen vent, so that the sterilizing gas generating module can generate sterilizing gas through the oxygen-enriched gas and discharge it into the first storage compartment. This not only eliminates the need for an additional oxygen-enriched gas generating module, reducing the structure in the gas supply device and solving the problem of high cost in existing gas supply devices, but also allows the oxygen-enriched gas generated by the nitrogen generating module beyond its nitrogen-enriched gas production to be used as the input of the sterilizing gas generating module, reducing the waste of oxygen-enriched gas.

[0020] Furthermore, the gas supply control method provided in this application detects whether the first storage chamber and the second storage chamber are open. If the first storage chamber is open, the nitrogen generation module and the sterilization gas generation module are controlled to operate, allowing the oxygen-enriched gas generated by the nitrogen generation module in addition to the nitrogen-enriched gas produced, to be discharged into the sterilization gas generation module through the oxygen vent, so that the sterilization gas generation module can generate sterilization gas through the oxygen-enriched gas and discharge it into the first storage chamber, maintaining the sterilization environment of the first storage chamber. If the second storage chamber is open, the nitrogen generation module is controlled to operate, allowing the nitrogen-enriched gas generated by the nitrogen generation module to be discharged into the second storage chamber, maintaining the nitrogen-enriched gas environment of the second storage chamber. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the first embodiment of the gas supply device for a refrigerator provided in this application; Figure 2 A schematic diagram of the structure of the second embodiment of the gas supply device for a refrigerator provided in this application; Figure 3 A schematic diagram of the structure of the third embodiment of the gas supply device for a refrigerator provided in this application; Figure 4 A schematic diagram of the structure of the fourth embodiment of the gas supply device for a refrigerator provided in this application; Figure 5 A schematic diagram of the fifth embodiment of the gas supply device for a refrigerator provided in this application; Figure 6 This is a schematic diagram of the structure of an embodiment of the refrigerator provided in this application; Figure 7 A schematic flowchart illustrating the first embodiment of the gas supply control method for a refrigerator provided in this application; Figure 8 A schematic flowchart illustrating a second embodiment of the gas supply control method for a refrigerator provided in this application; Figure 9 A schematic flowchart illustrating the third embodiment of the gas supply control method for a refrigerator provided in this application; Figure 10 A schematic flowchart of the fourth embodiment of the gas supply control method for a refrigerator provided in this application; Figure 11 This is a flowchart illustrating the fifth embodiment of the gas supply control method for a refrigerator provided in this application. Figure 12 This is a schematic flowchart of the sixth embodiment of the gas supply control method for a refrigerator provided in this application. Detailed Implementation

[0022] 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 this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a first embodiment of a gas supply device for a refrigerator provided in this application. The refrigerator includes a first storage compartment and a second storage compartment. The gas supply device 100 includes a nitrogen generation module and a sterilization gas generation module.

[0026] In some embodiments, the first and second storage compartments have different storage functions. For example, both the first and second storage compartments can be refrigerator preservation compartments, but their preservation requirements differ. For instance, the first storage compartment needs to maintain a sterilization environment, while the second storage compartment needs to maintain an oxygen-free environment. In some embodiments, the first and second storage compartments can be two independent storage spaces without communication between them. In some embodiments, the first and second storage compartments are connected to each other; for example, the second storage compartment is embedded in the first storage compartment, and to open the second storage compartment, the first storage compartment must be opened first, and then the second storage compartment must be opened.

[0027] In some embodiments, the nitrogen generation module is provided with a nitrogen vent and an oxygen vent.

[0028] In some embodiments, the sterilization gas generating module has an input port and an output port, with the input port connected to the oxygen exhaust port; wherein, the output port is used to connect to the first storage chamber, and the nitrogen exhaust port of the nitrogen generating module is used to connect to the second storage chamber.

[0029] In some embodiments, the nitrogen generator extracts nitrogen and oxygen-enriched gas from the air during operation. Since the nitrogen vent of the nitrogen generator connects to the second storage chamber, the nitrogen generated by the nitrogen generator is discharged into the second storage chamber through the vent, filling the second storage chamber with nitrogen and thus isolating it from oxygen to ensure the freshness of the stored items.

[0030] Furthermore, since the nitrogen generation module also extracts oxygen-enriched gas from the air during operation, when the first storage chamber needs to be replenished with sterilizing gas, the nitrogen generation module and the sterilizing gas generation module can be controlled to operate simultaneously. The oxygen-enriched gas generated by the nitrogen generation module is discharged into the sterilizing gas generation module through the oxygen vent. The sterilizing gas generation module generates a corresponding sterilizing gas based on the oxygen-enriched gas and discharges the sterilizing gas into the first storage chamber through the output port of the sterilizing gas generation module to maintain the sterilization environment in the first storage chamber. In some embodiments, the sterilizing gas may be ozone (O3) and / or gaseous hydrogen peroxide (H2O2), etc.

[0031] In some embodiments, the sterilizing gas generating module includes an ozone generator. The ozone generator's input port is connected to an oxygen exhaust port, and its output port is connected to a first storage chamber. When ozone needs to be replenished in the first storage chamber, the nitrogen generating module and the ozone generator can be controlled to operate simultaneously. The oxygen-enriched gas generated by the nitrogen generating module is discharged into the ozone generator through the oxygen exhaust port. The ozone generator generates ozone according to the oxygen-enriched gas and discharges the ozone into the first storage chamber through its output port to maintain the sterilizing environment in the first storage chamber.

[0032] In some embodiments, the sterilizing gas generating module includes an active oxygen generator. The input port of the active oxygen generator is connected to an oxygen exhaust port, and the output port of the active oxygen generator is connected to a first storage chamber. When the first storage chamber needs to be replenished with active oxygen gas, the nitrogen generating module and the active oxygen generator can be controlled to work simultaneously. The oxygen-enriched gas generated by the nitrogen generating module is discharged into the active oxygen generator through the oxygen exhaust port. The active oxygen generator generates corresponding active oxygen gas according to the oxygen-enriched gas and discharges the active oxygen gas into the first storage chamber through the output port of the active oxygen generator to maintain the sterilizing environment in the first storage chamber.

[0033] In this embodiment, the gas supply device includes a nitrogen generation module and a sterilizing gas generation module. The nitrogen generation module has a nitrogen vent and an oxygen vent, and the sterilizing gas generation module has an input port and an output port. The input port of the sterilizing gas generation module is connected to the oxygen vent of the nitrogen generation module. The output port of the sterilizing gas generation module is connected to a first storage chamber, and the nitrogen vent of the nitrogen generation module is connected to a second storage chamber. Based on this, the oxygen-enriched gas generated by the nitrogen generation module in addition to the nitrogen-enriched gas it produces can be discharged into the sterilizing gas generation module through the oxygen vent, so that the sterilizing gas generation module can generate sterilizing gas through the oxygen-enriched gas and discharge it into the first storage chamber. This not only eliminates the need for an additional oxygen-enriched gas generation module, reducing the structure in the gas supply device and solving the problem of high cost in existing gas supply devices, but also allows the oxygen-enriched gas generated by the nitrogen generation module in addition to the nitrogen-enriched gas it produces to be used as the input of the sterilizing gas generation module, reducing the waste of oxygen-enriched gas.

[0034] Please see Figure 2 , Figure 2 This is a schematic diagram of a second embodiment of the gas supply device for a refrigerator provided in this application. The refrigerator includes a first storage compartment and a second storage compartment. The gas supply device 100 includes: a nitrogen generation module, a sterilization gas generation module, and a three-way valve.

[0035] In some embodiments, the nitrogen generation module is provided with a nitrogen vent and an oxygen vent.

[0036] In some embodiments, the sterilization gas generating module has an input port and an output port, with the input port connected to the oxygen exhaust port; wherein, the output port is used to connect to the first storage chamber, and the nitrogen exhaust port of the nitrogen generating module is used to connect to the second storage chamber.

[0037] In some embodiments, the three-way valve connects the oxygen vent and the oxygen inlet respectively, and the three-way valve is also used to connect to the outside of the refrigerator.

[0038] In some embodiments, when the nitrogen generator module is operating, it extracts nitrogen and oxygen-enriched gas from the air. If the sterilization gas generator module does not need to operate at this time, the three-way valve can be controlled to connect the oxygen vent of the nitrogen generator module to the outside of the refrigerator, allowing the oxygen-enriched gas generated by the nitrogen generator module to be discharged to the outside of the refrigerator. If the sterilization gas generator module needs to operate at this time, the three-way valve can be controlled to connect the oxygen vent of the nitrogen generator module to the inlet of the sterilization gas generator module, allowing the oxygen-enriched gas generated by the nitrogen generator module to be discharged to the sterilization gas generator module, so that the sterilization gas generator module can use the oxygen-enriched gas to generate corresponding sterilization gas which is then discharged into the first storage compartment.

[0039] In this embodiment, a three-way valve is used to flexibly control the connection between the oxygen vent and the input port, as well as the connection between the oxygen vent and the outside of the refrigerator. This allows the three-way valve to control the connection between the oxygen vent and the input port when sterilization gas needs to be vented into the first storage compartment, and to control the connection between the oxygen vent and the outside of the refrigerator when sterilization gas does not need to be vented into the first storage compartment and the nitrogen generation module is in operation.

[0040] Please see Figure 3 , Figure 3 This is a schematic diagram of a third embodiment of the gas supply device for a refrigerator provided in this application. The refrigerator includes a first storage compartment and a second storage compartment. The gas supply device 100 includes: a nitrogen generation module, a sterilization gas generation module, and a gas circulation module.

[0041] In some embodiments, the nitrogen generation module is provided with a nitrogen vent and an oxygen vent.

[0042] In some embodiments, the sterilization gas generating module has an input port and an output port, with the input port connected to the oxygen exhaust port; wherein, the output port is used to connect to the first storage chamber, and the nitrogen exhaust port is used to connect to the second storage chamber.

[0043] In some embodiments, the gas circulation module is used to connect the first storage chamber and / or the second storage chamber; the gas circulation module is also connected to the output port of the sterilization gas generating module. For example, the gas circulation module is connected to the first storage chamber. For example, the gas circulation module is connected to the second storage chamber. For example, the gas circulation module can connect both the first and second storage chambers. In some embodiments, the gas circulation module can extract gas from the first and / or second storage chambers at appropriate times, thereby quickly replacing the gas in the first and / or second storage chambers.

[0044] In some embodiments, the nitrogen generation module further includes an air inlet connected to a gas circulation module. In some embodiments, because the air inlet is connected to the gas circulation module, the gas discharged from the gas circulation module will enter the nitrogen generation module. Furthermore, because the gas discharged from the gas circulation module contains more oxygen and nitrogen, this gas can be recycled into the nitrogen generation module, thereby improving nitrogen generation efficiency.

[0045] Please see Figure 4 , Figure 4 This is a schematic diagram of the fourth embodiment of the gas supply device for a refrigerator provided in this application. The refrigerator includes a first storage compartment and a second storage compartment. The gas supply device 100 includes: a nitrogen generation module, a sterilization gas generation module, a gas circulation module, and a pressure limiting one-way valve.

[0046] In some embodiments, a pressure-limiting check valve is located at the end of the gas circulation module facing the second storage chamber. The pressure-limiting check valve allows gas from the second storage chamber to flow into the gas circulation module. The pressure-limiting check valve ensures unidirectional gas flow while also maintaining the gas pressure within the second storage chamber. Specifically, if the gas pressure in the second storage chamber is detected to be lower than a preset pressure during the flow of gas into the gas circulation module, the pressure-limiting check valve will shut off, stopping the flow of gas from the second storage chamber into the gas circulation module.

[0047] Please see Figure 5 , Figure 5 This is a schematic diagram of the fifth embodiment of the gas supply device for a refrigerator provided in this application. The refrigerator includes a first storage compartment and a second storage compartment. The gas supply device 100 includes: a nitrogen generation module, a sterilization gas generation module, a three-way valve, a gas circulation module, and a pressure-limiting one-way valve.

[0048] In some embodiments, the nitrogen generation module is provided with a nitrogen vent and an oxygen vent.

[0049] In some embodiments, the sterilization gas generating module has an input port and an output port, with the input port connected to the oxygen exhaust port; wherein, the output port is used to connect to the first storage chamber, and the nitrogen exhaust port of the nitrogen generating module is used to connect to the second storage chamber.

[0050] The three-way valve connects the oxygen vent and the oxygen inlet, and also connects to the outside of the refrigerator.

[0051] In some embodiments, the gas circulation module is used to connect the first storage chamber and / or the second storage chamber; the gas circulation module is connected to the output port of the sterilization gas generating module.

[0052] The pressure-limiting check valve is located at the end of the gas circulation module facing the second storage chamber.

[0053] The remaining working logic can be found in other embodiments of this application, and will not be repeated here.

[0054] In some embodiments, the gas supply device provided in this application further includes a control module and a first detection module. The control module is electrically connected to the nitrogen generation module and the sterilization gas generation module, respectively. The first detection module is electrically connected to the control module and is used to detect the opening duration of the first storage chamber. The control module can control the nitrogen generation module and the sterilization gas generation module to operate according to the opening duration of the first storage chamber. For specific operating methods, please refer to the remaining embodiments.

[0055] In some embodiments, the gas supply device provided in this application further includes a control module and a second detection module. The control module is electrically connected to the nitrogen generation module and the sterilization gas generation module, respectively. The second detection module is electrically connected to the control module and is used to detect the opening duration of the second storage chamber. The control module can control the nitrogen generation module to operate according to the opening duration of the second storage chamber. For specific operating methods, please refer to the remaining embodiments.

[0056] In some embodiments, the gas supply device provided in this application further includes a control module, a first detection module, and a second detection module. The control module is electrically connected to the nitrogen generation module and the sterilization gas generation module, respectively. The first detection module is electrically connected to the control module and is used to detect the opening duration of the first storage chamber. The control module can control the operation of the nitrogen generation module and the sterilization gas generation module based on the opening duration of the first storage chamber. The second detection module is electrically connected to the control module and is used to detect the opening duration of the second storage chamber. The control module can control the operation of the nitrogen generation module based on the opening duration of the second storage chamber.

[0057] Please see Figure 6 , Figure 6 This is a schematic diagram of a refrigerator according to an embodiment of the present application. The refrigerator 200 includes a first storage compartment 201, a second storage compartment 202, and a gas supply device 100, which is connected to both the first storage compartment 201 and the second storage compartment 202. The gas supply device is as described in any embodiment of the present application.

[0058] Please see Figure 7 , Figure 7 This is a flowchart illustrating a first embodiment of the gas supply control method for a refrigerator provided in this application. It is applied to the gas supply device 100 provided in any embodiment of this application. The method includes: Step 71: Check whether the first and second storage compartments are open.

[0059] In some embodiments, corresponding detection modules can be set to detect whether the first storage room and the second storage room are open. For example, a first detection module and a second detection module can be set. The first detection module is used to detect whether the first storage room is open, and then detect the opening duration of the first storage room. The second detection module is used to detect whether the second storage room is open, and then detect the opening duration of the second storage room.

[0060] Step 72: If the first storage chamber is open, control the nitrogen generation module and the sterilization gas generation module to work.

[0061] When the first storage chamber is open, it indicates that the sterilizing gas in the first storage chamber is leaking rapidly. At this time, it is necessary to replenish the sterilizing gas in the first storage chamber. Based on this, the nitrogen generation module and the sterilizing gas generation module are controlled to work.

[0062] In some embodiments, the nitrogen generation module can be controlled to generate oxygen-enriched gas and discharge it to the sterilization gas generation module, and the nitrogen generation module can be controlled to generate nitrogen-enriched gas and discharge it to the second storage compartment or the outside of the refrigerator; the sterilization gas generation module can be controlled to generate sterilization gas and discharge it into the first storage compartment, thereby replenishing the first storage compartment with sterilization gas.

[0063] In some embodiments, the nitrogen generation module and the sterilization gas generation module can be controlled to operate immediately when the first storage chamber is in the open state. Alternatively, the nitrogen generation module and the sterilization gas generation module can be controlled to operate when the first storage chamber is in the open state and then switches from the open state to the closed state.

[0064] Step 73: If the second storage chamber is open, control the nitrogen generation module to operate.

[0065] When the second storage chamber is open, it indicates that the nitrogen in the second storage chamber is leaking rapidly. At this time, it is necessary to replenish the nitrogen in the second storage chamber. Based on this, the nitrogen generation module is controlled to work.

[0066] In some embodiments, the nitrogen generation module is controlled to operate according to a preset duration, and the nitrogen generation module is controlled to generate nitrogen-rich gas and discharge it into the second storage chamber.

[0067] In some embodiments, the preset duration can be calculated based on the duration the second storage chamber is open. For example, the nitrogen production rate of the nitrogen generation module per unit time and the nitrogen leakage rate per unit time after the second storage chamber is opened can be calculated. By comparing the nitrogen production rate per unit time and the nitrogen leakage rate per unit time, the preset duration can be calculated.

[0068] In some embodiments, the preset duration can be a fixed value.

[0069] In some embodiments, the nitrogen generation module can be controlled to operate immediately when the second storage chamber is in the open state. Alternatively, the nitrogen generation module can be controlled to operate when the second storage chamber is in the open state and then switches from the open state to the closed state.

[0070] In this embodiment, the system detects whether the first and second storage chambers are open. If the first storage chamber is open, the system controls the nitrogen generation module and the sterilization gas generation module to operate, allowing the oxygen-enriched gas generated by the nitrogen generation module (beyond the nitrogen-enriched gas) to be discharged into the sterilization gas generation module through the oxygen vent, so that the sterilization gas generation module can generate sterilization gas through the oxygen-enriched gas and discharge it into the first storage chamber, maintaining the sterilization environment of the first storage chamber. If the second storage chamber is open, the system controls the nitrogen generation module to operate, allowing the nitrogen-enriched gas generated by the nitrogen generation module to be discharged into the second storage chamber, maintaining the nitrogen-enriched gas environment of the second storage chamber.

[0071] Therefore, it is not necessary to use gas concentration sensors in the first and second storage chambers, thus saving hardware costs.

[0072] Please see Figure 8 , Figure 8 This is a schematic flowchart of a second embodiment of the gas supply control method for a refrigerator provided in this application. It is applied to the gas supply device 100 provided in any embodiment of this application. The method includes: Step 81: Check whether the first and second storage rooms are open.

[0073] Step 82: If the first storage room is open, obtain the opening duration of the first storage room.

[0074] In some embodiments, the opening duration can be the cumulative opening duration or the duration of a single opening.

[0075] In some embodiments, timing can start from detecting that the first storage room is open and end from detecting that the first storage room is closed, and the duration from the start of timing to the end of timing is the opening duration of the first storage room.

[0076] Step 83: Control the operation of the nitrogen generation module and the sterilization gas generation module according to the opening duration of the first storage chamber.

[0077] In some embodiments, the longer the opening time, the greater the gas leakage. Based on this, a corresponding gas leakage model can be constructed for the first or second storage compartment of each refrigerator, and the gas leakage amount within that opening time can be determined using the gas leakage model and the opening time of the first storage compartment.

[0078] In some embodiments, the gas leakage rate can be obtained based on the opening duration of the first storage chamber, and the working duration of the nitrogen generation module and the sterilization gas generation module can be determined based on the gas leakage rate. The nitrogen generation module and the sterilization gas generation module are controlled to operate according to the working duration, so that the oxygen-enriched gas generated by the nitrogen generation module in addition to the nitrogen-enriched gas produced can be discharged into the sterilization gas generation module through the oxygen vent, so that the sterilization gas generation module can generate sterilization gas through the oxygen-enriched gas and discharge it into the first storage chamber to maintain the sterilization environment of the first storage chamber.

[0079] Step 84: If the second storage chamber is open, the nitrogen generation module is controlled to work according to the preset time and to generate nitrogen-rich gas and discharge it into the second storage chamber.

[0080] In some embodiments, the longer the opening time, the greater the gas leakage. Based on this, a corresponding gas leakage model can be constructed for the second storage compartment of each refrigerator. Using the gas leakage model and the opening time of the second storage compartment, the gas leakage amount within that opening time can be determined. The operating time of the nitrogen generator module is determined based on the gas leakage amount; the nitrogen generator module is then controlled to operate according to the operating time, thereby achieving more accurate control of the nitrogen generator module and reducing wear and tear on it.

[0081] Please see Figure 9 , Figure 9 This is a flowchart illustrating a third embodiment of the gas supply control method for a refrigerator provided in this application. It is applied to the gas supply device provided in any embodiment of this application. The method includes: Step 91: Check whether the first and second storage compartments are open.

[0082] Step 92: If the first storage chamber is open, the gas circulation module is activated to discharge the gas from the first storage chamber to the nitrogen generation module.

[0083] When the first storage chamber is open, it indicates that the sterilizing gas in the first storage chamber is rapidly leaking. At this time, it is necessary to replenish the sterilizing gas in the first storage chamber. Based on this, the gas circulation module is activated to discharge the gas in the first storage chamber to the nitrogen generation module. This reduces the gas pressure in the first storage chamber and increases the pressure difference between the first storage chamber and the sterilizing gas generation module, facilitating the rapid replenishment of sterilizing gas. The activation of the gas circulation module to discharge the gas in the first storage chamber to the nitrogen generation module ensures that the sterilizing gas in the first storage chamber is not wasted and can be regenerated into oxygen-enriched gas in the nitrogen generation module.

[0084] Step 93: Control the nitrogen generation module and the sterilization gas generation module to operate.

[0085] In some embodiments, step 93 can be referred to in other embodiments, which will not be repeated here.

[0086] Step 94: If the second storage chamber is open, the gas circulation module is activated to discharge the gas in the second storage chamber to the nitrogen generation module, so that the second storage chamber maintains the preset pressure.

[0087] When the second storage chamber is open, it indicates that the nitrogen in the second storage chamber is rapidly leaking. At this time, it is necessary to replenish the nitrogen in the second storage chamber. Based on this, the control gas circulation module is activated to discharge the gas in the second storage chamber to the nitrogen generation module, so that the second storage chamber maintains the preset pressure. This reduces the gas pressure in the second storage chamber and increases the pressure difference between the second storage chamber and the nitrogen generation module, which facilitates the rapid replenishment of nitrogen-rich gas in the future.

[0088] Step 95: Control the nitrogen generation module to operate.

[0089] In some embodiments, the nitrogen generation module is controlled to operate according to a preset duration, and the nitrogen generation module is controlled to generate nitrogen-rich gas and discharge it into the second storage chamber.

[0090] In this embodiment, if the first storage chamber is open, the gas circulation module is controlled to operate, and the gas in the first storage chamber is discharged to the nitrogen generation module. On the one hand, this reduces the gas pressure in the first storage chamber and increases the pressure difference between the first storage chamber and the sterilization gas generation module, which facilitates the rapid replenishment of sterilization gas. On the other hand, it prevents the sterilization gas in the first storage chamber from being wasted, as it can be used to form oxygen-enriched gas again in the nitrogen generation module.

[0091] Please see Figure 10 , Figure 10 This is a flowchart illustrating a fourth embodiment of the gas supply control method for a refrigerator provided in this application. It is applied to the gas supply device provided in any embodiment of this application. The method includes: Step 101: Obtain the continuous closing time of the first and second storage rooms.

[0092] It is understandable that, due to the structural design of the first and second storage chambers, the airtightness of the related pipelines, and the gas consumption by the items in the first and second storage chambers, the gas inside them will gradually decrease even when the first and second storage chambers are closed. Therefore, the duration of continuous closure of the first and second storage chambers is statistically analyzed.

[0093] Step 102: If the continuous shutdown time reaches the preset shutdown time, then control the nitrogen generation module to start working.

[0094] In some embodiments, the gas leakage amount is obtained based on the continuous closure duration of the first storage chamber, and the operating duration of the nitrogen generation module and the sterilization gas generation module is determined based on the gas leakage amount; the nitrogen generation module and the sterilization gas generation module are controlled to operate based on the operating duration.

[0095] In some embodiments, the continuous closure time of the first and second storage chambers can be separately recorded. If the continuous closure time of the first storage chamber reaches a preset closure time, the nitrogen generation module and the sterilizing gas generation module are activated, allowing the nitrogen generation module to produce oxygen-enriched gas beyond its nitrogen-enriched gas production, which is then discharged into the sterilizing gas generation module through the oxygen vent. This ensures that the sterilizing gas generation module can generate sterilizing gas from the oxygen-enriched gas and discharge it into the first storage chamber, maintaining the sterilization environment of the first storage chamber. If the continuous closure time of the second storage chamber reaches a preset closure time, the nitrogen generation module is activated, producing nitrogen-enriched gas which is then discharged into the second storage chamber, maintaining the nitrogen-enriched gas environment of the second storage chamber.

[0096] Please see Figure 11 , Figure 11 This is a flowchart illustrating a fifth embodiment of the gas supply control method for a refrigerator provided in this application. It is applied to the gas supply device provided in any embodiment of this application. The method includes: Step 111: In response to the closing signal of the first storage room, obtain the opening duration of the first storage room.

[0097] In some embodiments, the opening duration can be the cumulative opening duration.

[0098] In some embodiments, the opening signal of the first storage room is responded to first, prior to the closing signal of the first storage room. Based on this, the opening duration of the first storage room can be obtained from the duration between the closing signal and the opening signal.

[0099] Step 112: Control the operation of the nitrogen generation module and the sterilization gas generation module according to the opening duration of the first storage compartment, so that the nitrogen-rich gas generated by the nitrogen generation module is discharged into the second storage compartment or outside the refrigerator, and the oxygen-rich gas generated by the nitrogen generation module is discharged into the sterilization gas generation module.

[0100] In some embodiments, the amount of sterilizing gas leakage can be determined from the sterilizing gas concentration maintenance model based on the opening duration of the first storage chamber; the first operating duration of the nitrogen generation module and the sterilizing gas generating module can be determined based on the amount of sterilizing gas leakage; and the nitrogen generation module and the sterilizing gas generating module can be controlled to operate according to the first operating duration. The sterilizing gas concentration maintenance model can be constructed in advance based on the opening duration of the first storage chamber, the amount of sterilizing gas leakage per unit time, and the amount of sterilizing gas generated per unit time by the sterilizing gas generating module. After the model is constructed, the amount of sterilizing gas leakage can be directly determined using the sterilizing gas concentration maintenance model.

[0101] In some embodiments, when the open duration can be a cumulative open duration, the nitrogen generation module and the sterilization gas generation module are controlled to operate based on the current cumulative open duration. After controlling the nitrogen generation module and the sterilization gas generation module to operate, the current cumulative open duration is reset.

[0102] Step 113: Control the sterilization gas generating module to generate sterilization gas using oxygen-enriched gas, and discharge the sterilization gas into the first storage chamber to maintain the sterilization gas concentration in the first storage chamber.

[0103] In some embodiments, during the process of venting sterilizing gas into the first storage compartment, the second storage compartment may be opened, requiring the venting of nitrogen-rich gas as well. Therefore, for precise control, this application proposes that, during the process of venting sterilizing gas into the first storage compartment, in response to receiving the opening duration of the second storage compartment, a first remaining operating time of the nitrogen generating module is obtained; the first remaining operating time refers to the remaining operating time of the nitrogen generating module under the control of the opening duration of the first storage compartment; the amount of nitrogen-rich gas that the nitrogen generating module can produce within the first remaining operating time is determined; in response to the nitrogen-rich gas amount meeting the nitrogen-rich gas concentration requirement of the second storage compartment, the nitrogen generating module is controlled to stop operating after the first remaining operating time; in response to the nitrogen-rich gas amount not meeting the nitrogen-rich gas concentration requirement of the second storage compartment, the nitrogen generating module is controlled to continue operating after the first remaining operating time, and the sterilizing gas generating module is controlled to stop operating. Wherein, when controlling the nitrogen generating module to continue operating after the first remaining operating time, a three-way valve can be controlled to connect the oxygen vent of the nitrogen generating module to the outside of the refrigerator.

[0104] In some embodiments, when the amount of nitrogen-enriched gas is insufficient to meet the nitrogen-enriched gas concentration requirement of the second storage chamber, the remaining nitrogen-enriched gas requirement of the second storage chamber is determined; a first continuing operating time for the nitrogen generation module is determined based on the remaining nitrogen-enriched gas requirement; after the nitrogen generation module has operated for the first remaining operating time, the nitrogen generation module is controlled to continue operating for the first continuing operating time. For example, the total nitrogen-enriched gas requirement is calculated based on the nitrogen-enriched gas concentration requirement of the second storage chamber, and the remaining nitrogen-enriched gas requirement is obtained by subtracting the amount of nitrogen-enriched gas from the total nitrogen-enriched gas requirement.

[0105] In some embodiments, after the nitrogen generation module has been operating for a first remaining operating time, the nitrogen generation module is controlled to continue operating, and the sterilization gas generation module is controlled to stop operating. Furthermore, after the nitrogen generation module has been operating for a first remaining operating time, the three-way valve is controlled to connect the oxygen vent of the nitrogen generation module to the outside of the refrigerator.

[0106] In this embodiment, the operation of the nitrogen generation module and the sterilization gas generation module is controlled according to the opening duration of the first storage compartment, so that the nitrogen-rich gas generated by the nitrogen generation module is discharged into the second storage compartment or outside the refrigerator, and the oxygen-rich gas generated by the nitrogen generation module is discharged into the sterilization gas generation module, thereby achieving precise control of the nitrogen generation module and the sterilization gas generation module.

[0107] Please see Figure 12 , Figure 12 This is a flowchart illustrating a sixth embodiment of the gas supply control method for a refrigerator provided in this application. It is applied to the gas supply device provided in any embodiment of this application. The method includes: Step 121: In response to the closing signal of the second storage room, obtain the opening duration of the second storage room.

[0108] In some embodiments, the opening duration can be the cumulative opening duration.

[0109] In some embodiments, the opening signal of the second storage room is responded to first, before the closing signal of the second storage room is responded to. Based on this, the opening duration of the second storage room can be obtained from the duration between the closing signal and the opening signal.

[0110] Step 122: Control the operation of the nitrogen generation module according to the opening duration of the second storage chamber, so that the nitrogen generation module generates nitrogen-rich gas and discharges it into the second storage chamber to maintain the nitrogen concentration in the second storage chamber.

[0111] In some embodiments, the amount of nitrogen-rich gas leakage is determined from the nitrogen-rich gas concentration maintenance model based on the opening duration of the second storage chamber; the second operating duration of the nitrogen generation module is determined based on the amount of nitrogen-rich gas leakage; and the nitrogen generation module is controlled to operate according to the second operating duration.

[0112] In some embodiments, there may be a situation where, during the process of discharging nitrogen-rich gas into the second storage chamber, the first storage chamber is opened, and sterilizing gas also needs to be discharged. Based on this, in order to achieve precise control, this application proposes that, during the process of discharging nitrogen-rich gas into the second storage chamber, in response to receiving the opening duration of the first storage chamber, a second remaining operating time of the nitrogen generation module is obtained; the second remaining operating time refers to the remaining operating time of the nitrogen generation module under the control of the opening duration of the second storage chamber; the amount of sterilizing gas that the sterilizing gas generating module can generate within the second remaining operating time is determined; in response to the sterilizing gas amount meeting the sterilizing gas concentration requirement of the first storage chamber, after the sterilizing gas discharged by the sterilizing gas generating module into the first storage chamber meets the sterilizing gas concentration requirement of the first storage chamber, the sterilizing gas generating module is controlled to stop working; in response to the sterilizing gas amount not meeting the sterilizing gas concentration requirement of the first storage chamber, after the nitrogen generation module has worked for the second remaining operating time, the nitrogen generation module and the sterilizing gas generating module are controlled to continue working.

[0113] In some embodiments, if the amount of sterilizing gas does not meet the sterilizing gas concentration requirement of the first storage chamber, the remaining sterilizing gas requirement of the second storage chamber is determined; a second continuing operating time for the nitrogen generation module is determined based on the remaining sterilizing gas requirement; after the nitrogen generation module and the sterilizing gas generation module have operated for the second remaining operating time, the nitrogen generation module and the sterilizing gas generation module are controlled to continue operating for the second continuing operating time. For example, the total sterilizing gas requirement is calculated based on the sterilizing gas concentration requirement of the first storage chamber, and the remaining sterilizing gas requirement is obtained by subtracting the amount of sterilizing gas from the total sterilizing gas requirement.

[0114] In this embodiment, the nitrogen generation module is controlled to operate according to the opening duration of the second storage chamber, so that the nitrogen generation module generates nitrogen-rich gas and discharges it into the second storage chamber to maintain the nitrogen concentration in the second storage chamber, thereby achieving precise control of the nitrogen generation module.

[0115] In one application scenario, we will take a gas supply device, including a nitrogen generation module, an ozone generation module, a gas circulation module, and a control module, as an example for explanation: The nitrogen generator module is located in the compressor compartment and generates nitrogen using the PSA (Pressure Swing Adsorption) method. Clean air is drawn from the compressor compartment through a filter box, and the nitrogen generator module concentrates the nitrogen gas. This nitrogen gas is then introduced into the crisper drawer (second storage compartment). Additionally, oxygen-enriched gas is discharged through a three-way valve to the ozone generator module inside the refrigerator or to the outside of the refrigerator. The nitrogen generator module can control the nitrogen concentration for modified atmosphere storage between 85-98%. Because the generated nitrogen gas is relatively dry (1-20% humidity), it can expel high-humidity gases from the drawer (where humidity typically rises to 100% after fruits and vegetables are placed, causing condensation that can easily lead to rot and mold, hindering the preservation of fruits and vegetables). Therefore, the humidity can be controlled within the optimal range of 85-95%.

[0116] The gas circulation module can evenly distribute ozone in the refrigerator's fresh-keeping space (first storage compartment), thereby achieving sterilization and deodorization. Simultaneously, based on a precise prediction model, the ozone content is controlled to remain stable within the range of 0.05ppm-0.1ppm over time.

[0117] The control module is connected to sensors that detect when the drawer is opened and closed, and controls the switching of the nitrogen generation module, the gas circulation module, the ozone generation module, and the refrigerator door opening and closing detection, thereby controlling the replenishment of gas in the first storage compartment and / or the second storage compartment in accordance with any embodiment of this application.

[0118] Establishment of calibration parameter models (nitrogen-rich gas concentration maintenance model and sterilization gas concentration maintenance model): First, nitrogen concentration sensors are placed in the refrigerator's crisper drawer to record the preset time for the nitrogen generator to reach the set concentration after operation, obtaining the average time. Simultaneously, the drawer is sealed for 24 hours, and the nitrogen concentration decrease rate is detected. An adjustment time is set within 12-24 hours to determine the maintenance time of the nitrogen generator during operation. The humidity change in the crisper drawer is also recorded to obtain a functional model of nitrogen and humidity maintenance time (nitrogen-rich gas concentration maintenance model). Next, multiple ozone sensors (sterilization gas sensors) are placed in the refrigerator's freezer compartment to record the time for the ozone generator to start and reach the predetermined concentration, recording the concentration over 12-24 hours and determining the average maintenance time. Simultaneously, the refrigerator is opened at gradient times (5s, 10s, 20s, 30s, 40s, 50s, 60s, etc.) to determine the ozone leakage rate at different opening times, and ozone concentration is replenished accordingly to determine the maintenance time, obtaining a functional model of ozone maintenance time (sterilization gas concentration maintenance model). These two models can be used to control nitrogen and ozone concentrations.

[0119] In summary, this application, based on the existing problems of related technologies, comprehensively considers the integration of preservation and deodorization systems. When the nitrogen preservation system is running, the nitrogen-rich gas produced is discharged into the preservation drawer (second storage compartment) for gas composition adjustment. The generated oxygen-rich gas is evenly distributed in the refrigerator compartment (first storage compartment) through the refrigerator air duct via the ozone generator module. Simultaneously, the oxygen-rich gas produced by the nitrogen generator module has low humidity, which significantly improves the electrode life of the ozone generator module. Using high-frequency discharge to generate ozone is more energy-efficient. The combined use of the nitrogen preservation system and ozone improves ozone generation efficiency, enabling efficient food preservation and deodorization / sterilization. The control logic, based on a calibrated parameter model, controls the start-up time of the nitrogen generator module and ozone generator module by controlling the opening and closing time of the door and drawer, thereby controlling the range of nitrogen and ozone concentrations. This improves overall reliability, eliminates the need for a sensor module, enhances overall reliability and economy, and reduces the complexity of the refrigerator system.

[0120] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A gas supply device for a refrigerator, the refrigerator comprising a first storage compartment and a second storage compartment, characterized in that, The gas supply device includes: A nitrogen generating module, wherein the nitrogen generating module is provided with a nitrogen vent and an oxygen vent; A sterilizing gas generating module, wherein the sterilizing gas generating module is provided with an input port and an output port, the input port being connected to the oxygen exhaust port; The output port is used to connect to the first storage chamber, and the nitrogen discharge port is used to connect to the second storage chamber.

2. The gas supply device for a refrigerator according to claim 1, characterized in that, The sterilization gas generating module includes an ozone generator, the input port of which is connected to the oxygen exhaust port, and the output port of which is connected to the first storage chamber; or... The sterilization gas generating module includes an active oxygen generator, the input port of which is connected to the oxygen exhaust port, and the output port of which is connected to the first storage chamber.

3. The gas supply device for a refrigerator according to claim 1, characterized in that, The gas supply device also includes a three-way valve, which is connected to the oxygen vent and the inlet respectively, and is also used to connect to the outside of the refrigerator.

4. The gas supply device for a refrigerator according to claim 1, characterized in that, The gas supply device further includes a gas circulation module, which is used to connect the first storage chamber and / or the second storage chamber; The gas circulation module is connected to the output port; and / or, The nitrogen generation module also includes an air inlet, which is connected to the gas circulation module.

5. The gas supply device for a refrigerator according to claim 4, characterized in that, The gas supply device also includes a pressure-limiting one-way valve, which is located at the end of the gas circulation module facing the second storage chamber. The pressure-limiting one-way valve is used to allow gas from the second storage chamber to flow into the gas circulation module.

6. The gas supply device for a refrigerator according to any one of claims 1-5, characterized in that, It also includes a control module, which is electrically connected to the nitrogen generation module and the sterilization gas generation module respectively; The gas supply device for the refrigerator further includes a first detection module, which is electrically connected to the control module. The first detection module is used to detect the duration of the first storage compartment being opened; and / or, The gas supply device for the refrigerator also includes a second detection module, which is electrically connected to the control module. The second detection module is used to detect the duration of the second storage compartment being opened.

7. A refrigerator, characterized in that, include: First storage room; Second storage room; The gas supply device according to any one of claims 1-6, wherein the gas supply device is respectively connected to the first storage chamber and the second storage chamber.

8. A gas supply control method for a refrigerator, characterized in that, Applied to the gas supply apparatus as described in any one of claims 1-6, the method comprises: Check whether the first and second storage compartments are open; If the first storage chamber is open, the nitrogen generation module and the sterilization gas generation module will operate. If the second storage chamber is open, the nitrogen generation module will be activated.

9. The gas supply control method according to claim 8, characterized in that, If the first storage chamber is in the open state, the nitrogen generation module and the sterilization gas generation module are controlled to operate, including: The opening duration of the first storage chamber is obtained, and the nitrogen generation module and the sterilization gas generation module are controlled to operate according to the opening duration of the first storage chamber.

10. The gas supply control method according to claim 9, characterized in that, The step of controlling the operation of the nitrogen generation module and the sterilization gas generation module according to the opening duration of the first storage chamber includes: The gas leakage amount is obtained based on the opening time of the first storage chamber, and the working time of the nitrogen generation module and the sterilization gas generation module is determined based on the gas leakage amount. The nitrogen generation module and the sterilization gas generation module are controlled to operate according to the specified working time.

11. The gas supply control method according to claim 8, characterized in that, The controlled nitrogen generation module and the sterilization gas generation module operate as follows: The nitrogen generation module is controlled to produce oxygen-enriched gas and discharge it to the sterilization gas generation module, and the nitrogen generation module is also controlled to discharge nitrogen-enriched gas to the second storage compartment or the outside of the refrigerator. The sterilizing gas generating module generates sterilizing gas and discharges it into the first storage chamber.

12. The gas supply control method according to claim 8, characterized in that, If the second storage chamber is in the open state, the nitrogen generation module is controlled to operate, including: The nitrogen generation module is controlled to operate according to a preset duration, and the nitrogen generation module is controlled to generate nitrogen-rich gas and discharge it into the second storage chamber.

13. The gas supply control method according to claim 8, characterized in that, The gas supply device also includes a gas circulation module; If the first storage chamber is in the open state, before controlling the nitrogen generation module and the sterilization gas generation module to operate, the procedure includes: controlling the gas circulation module to operate, discharging the gas from the first storage chamber to the nitrogen generation module; and / or, If the second storage chamber is in the open state, before controlling the nitrogen generation module to work, the procedure includes: controlling the gas circulation module to work, discharging the gas from the second storage chamber to the nitrogen generation module, so that the second storage chamber maintains a preset pressure.

14. The gas supply control method according to any one of claims 8-13, characterized in that, Also includes: The continuous shutdown duration of the first storage chamber and the second storage chamber is obtained. If the continuous shutdown duration reaches the preset shutdown duration, the nitrogen generation control module will operate.

15. The gas supply control method according to claim 14, characterized in that, If the continuous shutdown duration reaches a preset shutdown duration, then controlling the nitrogen generation module to operate includes: The gas leakage rate is obtained based on the continuous closure duration of the first storage chamber, and the operating duration of the nitrogen generation module and the sterilization gas generation module is determined based on the gas leakage rate. The nitrogen generation module and the ozone generation module are controlled to operate according to the specified working duration.

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