Preservation methods, controllers, refrigerators, and computer-readable storage media

Abstract

This application proposes a preservation method, controller, refrigerator, and computer-readable storage medium. The refrigerator includes a preservation compartment and an electrochemical module for storing an electrolyte. The preservation method includes: acquiring the current electrolyte concentration; monitoring the temperature of a first electrolyte and a first energizing parameter of the electrochemical module during operation; determining a first oxygen concentration in the preservation compartment based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter; and controlling the operating state of the electrochemical module based on the first oxygen concentration and a preset oxygen concentration range. Since this application only requires knowledge of the electrolyte concentration, electrolyte temperature, and energizing parameter to determine the oxygen concentration in the preservation compartment, it eliminates the need for an oxygen sensor. This avoids the need for additional oxygen sensor hardware, thus solving the problems of short lifespan and high cost associated with oxygen sensors and meeting the practical application needs of the home appliance industry.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and in particular to a preservation method, controller, refrigerator, and computer-readable storage medium. Background Technology

[0002] In related technologies, oxygen is one of the key reactants in the oxidation of nutrients and the aerobic respiration of fruits and vegetables. A low-oxygen environment can effectively inhibit the rate of nutrient oxidation and the rate of aerobic respiration in fruits and vegetables, thus preserving nutrients and extending the shelf life of produce. Oxygen concentration is crucial to preservation. When the oxygen concentration is too high, fruits and vegetables continue their normal physiological activities, and respiration cannot be effectively inhibited, failing to improve preservation. When the oxygen concentration is too low, fruits and vegetables will undergo anaerobic respiration, producing alcohol, which is also detrimental to preservation. Therefore, low-oxygen preservation requires a suitable oxygen concentration range; both excessively high and excessively low concentrations are detrimental to fruit and vegetable preservation.

[0003] Currently, refrigerators typically monitor oxygen concentration by using oxygen sensors. However, oxygen sensors suffer from problems such as short lifespan and high cost, thus failing to meet the actual application needs of the home appliance industry. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a preservation method, controller, refrigerator, and computer-readable storage medium, aiming to provide a way to monitor oxygen concentration without the need for an oxygen sensor, thus solving the problems of short lifespan and high cost of oxygen sensors.

[0005] In a first aspect, embodiments of this application provide a preservation method applied to a refrigerator, wherein the refrigerator is provided with a preservation box and an electrochemical module for controlling oxygen concentration, the electrochemical module being connected to the preservation box and used to store an electrolyte; the preservation method includes:

[0006] Obtain the current electrolyte concentration;

[0007] During the operation of the electrochemical module, the temperature of the first electrolyte and the first energizing parameter of the electrochemical module are monitored.

[0008] The first oxygen concentration of the food preservation box is determined based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter.

[0009] The operating state of the electrochemical module is controlled based on the first oxygen concentration and the preset oxygen concentration range.

[0010] According to some embodiments of this application, obtaining the current electrolyte concentration includes:

[0011] Determine that the oxygen concentration inside the food storage container is greater than or equal to a preset concentration value;

[0012] The second electrolyte temperature is obtained, the electrochemical module is started, and the second energizing parameters of the electrochemical module are obtained.

[0013] The current electrolyte concentration is determined based on the second electrolyte temperature and the second energizing parameter.

[0014] According to some embodiments of this application, determining the first oxygen concentration of the food preservation box body based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter includes:

[0015] The current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter are input into the oxygen concentration calculation model, and the first oxygen concentration is obtained by outputting the oxygen concentration calculation model.

[0016] The oxygen concentration calculation model includes electrolyte concentration parameters, electrolyte temperature parameters, energizing parameters, and oxygen concentration parameters. The oxygen concentration parameters are determined by the electrolyte concentration parameters, electrolyte temperature parameters, and energizing parameters.

[0017] According to some embodiments of this application, determining the current electrolyte concentration based on the second electrolyte temperature and the second energizing parameter includes:

[0018] The second electrolyte temperature and the second energizing parameter are input into the electrolyte concentration calculation model, and the current electrolyte concentration is obtained by outputting the electrolyte concentration calculation model.

[0019] The electrolyte concentration calculation model includes electrolyte temperature parameters, energizing parameters, and electrolyte concentration parameters, wherein the electrolyte concentration parameters are determined by the electrolyte temperature parameters and the energizing parameters.

[0020] According to some embodiments of this application, determining that the oxygen concentration inside the food storage container is greater than or equal to the preset concentration value includes one of the following:

[0021] The switch status of the food storage container is obtained. If the switch status is on, the oxygen concentration inside the food storage container is determined to be greater than or equal to a preset concentration value.

[0022] The switch state of the food storage container is obtained. If the switch state is closed, the closing duration of the food storage container is obtained. If the closing duration is greater than a preset duration, the oxygen concentration inside the food storage container is determined to be greater than or equal to a preset concentration value.

[0023] According to some embodiments of this application, controlling the operating state of the electrochemical module based on the first oxygen concentration and a preset oxygen concentration range includes one of the following:

[0024] When the first oxygen concentration is within the preset oxygen concentration range, the operation of the electrochemical module is stopped.

[0025] When the first oxygen concentration is outside the preset oxygen concentration range, the electrochemical module continues to operate.

[0026] According to some embodiments of this application, the electrochemical module includes a module housing with a cathode electrode, the module housing being used to store electrolyte; the preservation method includes:

[0027] The electrolyte and the air inside the food preservation container undergo an oxygen reduction reaction with the oxygen in the air under the action of the cathode electrode to produce hydroxide ions, thereby reducing the oxygen concentration inside the food preservation container.

[0028] According to some embodiments of this application, the module housing is further provided with an anode electrode, and the anode electrode and the cathode electrode are electrically connected; the preservation method further includes:

[0029] The hydroxide ions undergo an oxygen evolution reaction under the action of the anode electrode, releasing water and oxygen.

[0030] The released oxygen is discharged to the outside of the preservation box, and the released water is stored inside the module box.

[0031] Secondly, embodiments of this application provide a controller, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the preservation method as described in the first aspect above when running the computer program.

[0032] Thirdly, embodiments of this application provide a refrigerator, including the controller described in the second aspect above.

[0033] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for performing the preservation method as described in the first aspect above.

[0034] According to the technical solution of this application embodiment, at least the following beneficial effects are achieved: First, the current electrolyte concentration is obtained; then, during the operation of the electrochemical module, the first electrolyte temperature and the first energizing parameter of the electrochemical module are monitored; next, the first oxygen concentration of the food preservation box is determined based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter; finally, the working state of the electrochemical module is controlled based on the first oxygen concentration and a preset oxygen concentration range. Since this application embodiment only needs to know the electrolyte concentration, electrolyte temperature, and energizing parameter to determine the oxygen concentration inside the food preservation box, without needing an oxygen sensor to monitor the oxygen concentration, this application embodiment eliminates the need for an additional oxygen sensor hardware structure, thereby solving the problems of short lifespan and high cost of oxygen sensors and meeting the practical application needs of the home appliance industry.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0037] Figure 1 This is a schematic diagram of the installation structure of the food storage container and the electrochemical module provided in one embodiment of this application;

[0038] Figure 2 This is a schematic diagram showing the installation position of the magnetic switch of a food storage container provided in one embodiment of this application;

[0039] Figure 3 This is a flowchart of a preservation method provided in one embodiment of this application;

[0040] Figure 4 This is a flowchart of a preservation method provided in another embodiment of this application;

[0041] Figure 5 This is a flowchart of a preservation method provided in another embodiment of this application;

[0042] Figure 6 This is a flowchart of a preservation method provided in another embodiment of this application;

[0043] Figure 7 This is a flowchart of a preservation method provided in another embodiment of this application;

[0044] Figure 8This is a flowchart of a preservation method provided in another embodiment of this application;

[0045] Figure 9 This is a flowchart of a preservation method provided in another embodiment of this application;

[0046] Figure 10 This is a flowchart of a preservation method provided in another embodiment of this application;

[0047] Figure 11 This is a flowchart of a preservation method provided in another embodiment of this application;

[0048] Figure 12 This is a flowchart of a preservation method provided in another embodiment of this application;

[0049] Figure 13 This is an overall flowchart of a preservation method provided in one embodiment of this application;

[0050] Figure 14 This is a graph showing the reaction temperature and reaction current at different electrolyte concentrations provided in one embodiment of this application;

[0051] Figure 15 This is a graph showing the oxygen concentration and reaction current at different electrolyte concentrations, provided in one embodiment of this application.

[0052] Figure 16 This is a schematic diagram of a controller for performing a preservation method according to an embodiment of this application. Detailed Implementation

[0053] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0054] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0056] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0057] In some situations, oxygen is a crucial reactant in the oxidation of nutrients and the aerobic respiration of fruits and vegetables. A low-oxygen environment can effectively inhibit the rate of nutrient oxidation and the rate of aerobic respiration in fruits and vegetables, thus preserving nutrients and extending the shelf life of produce. Oxygen concentration is critical to preservation. If the oxygen concentration is too high, fruits and vegetables continue their normal physiological activities, and respiration cannot be effectively inhibited, failing to improve preservation. If the oxygen concentration is too low, fruits and vegetables will undergo anaerobic respiration, producing alcohol, which is also detrimental to preservation. Therefore, low-oxygen preservation requires a suitable oxygen concentration range; both excessively high and low concentrations are detrimental to fruit and vegetable preservation.

[0058] Existing low-oxygen preservation methods do not consider monitoring oxygen concentration, resulting in oxygen concentrations that are too high or too low, making it impossible to preserve fruits and vegetables. In addition, refrigerators currently typically monitor oxygen concentration by using oxygen sensors, but these sensors suffer from problems such as short lifespan and high cost, thus failing to meet the actual application needs of the home appliance industry.

[0059] Based on the above, this application proposes a preservation method, controller, refrigerator, and computer-readable storage medium, which aims to automatically determine the oxygen concentration and control the operation of the electrochemical module to achieve a suitable oxygen concentration in a low-oxygen space, thereby improving the preservation effect of fruits and vegetables under suitable oxygen concentration; and also provides a method that does not require an oxygen sensor to monitor the oxygen concentration, solving the problems of short lifespan and high cost of oxygen sensors.

[0060] The various embodiments of the refrigerator of this application will be further described below with reference to the accompanying drawings.

[0061] like Figure 1 As shown, Figure 1This is a schematic diagram of the installation structure of a food storage container and an electrochemical module according to an embodiment of this application. The refrigerator of this embodiment includes an electrochemical module 200 and a food storage container 100. The food storage container 100 has a heat preservation and sealing function and is used to store food. The electrochemical module 200 is connected to the food storage container 100 and can regulate the oxygen concentration inside the food storage container 100 through an electrochemical reaction. The electrochemical module 200 stores an electrolyte.

[0062] It should be noted that the electrochemical module 200 mentioned above is provided with a module housing for storing electrolyte. The module housing contains a cathode electrode and an anode electrode, and the anode electrode and the cathode electrode are electrically connected.

[0063] Specifically, the electrochemical reactions of the electrochemical module 200 in this embodiment include, but are not limited to, cathode electrode reactions and anode electrode reactions. The cathode electrode reaction process can be: O2 + 2H2O + 4e = 4OH- - The anode electrode reaction process can be: 4OH - -4e = 2H2O + O2. As can be seen from the above, oxygen is consumed on the cathode side, while oxygen is generated on the anode side.

[0064] Based on the above principles, in order to reduce the oxygen concentration inside the food storage container 100, this embodiment can connect only the cathode electrode to the inside of the food storage container 100, thereby removing the oxygen inside the food storage container 100 through the cathode electrode; while the anode electrode is isolated from the inside of the food storage container 100, so that the oxygen generated by the anode electrode will not re-enter the inside of the food storage container 100. Therefore, this embodiment can discharge the oxygen generated by the anode electrode to the outside of the food storage container 100, so that the oxygen concentration inside the food storage container 100 will not rise again due to the anode electrode, thereby enabling the electrochemical module 200 to reduce the oxygen concentration inside the food storage container 100 through electrochemical reaction.

[0065] It should be noted that in order to maintain a constant electrolyte concentration within the module housing, i.e., to maintain the OH- ions in the electrolyte... - Since the concentration remains unchanged, this embodiment of the application requires that the water generated by the anode electrode be stored back in the module box.

[0066] Alternatively, to increase the oxygen concentration inside the food storage container 100, this embodiment can connect only the anode electrode to the inside of the food storage container 100, thereby increasing the oxygen concentration inside the food storage container 100 through the anode electrode; while the cathode electrode is isolated from the inside of the food storage container 100, so that the cathode electrode does not consume the oxygen inside the food storage container 100. Therefore, this embodiment can connect the cathode electrode to the outside of the food storage container 100, so that the cathode electrode only reacts with the oxygen in the external environment of the food storage container 100, and therefore does not consume the oxygen inside the food storage container 100. This allows the electrochemical module 200 to increase the oxygen concentration inside the food storage container 100 through electrochemical reactions.

[0067] It is understood that the electrolyte mentioned above can be water, other liquids containing water, or liquids containing OH groups. - The type of electrolyte is not specifically limited in the embodiments of this application.

[0068] In one embodiment, the electrochemical module 200 of this application embodiment further includes, but is not limited to, a lid and a sealing ring, wherein the lid is installed at the opening of the module housing, and the sealing ring is installed at the opening.

[0069] In one embodiment, the electrochemical module 200 of this application embodiment also includes, but is not limited to, a water level sensor and a float, so as to detect the liquid level of the electrolyte in the module box, and prompt the user to add electrolyte when the liquid level is low.

[0070] Additionally, in one embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the installation position of the magnetic switch of the food storage container provided in one embodiment of this application; the food storage container 100 in this embodiment of the application is also provided with a magnetic switch 110, which can be used to determine whether the food storage container 100 is open.

[0071] It should be noted that the aforementioned food storage container 100 can be installed in the refrigerator's refrigeration space, the refrigerator's freezer space, or other functional spaces of the refrigerator. This application embodiment does not specifically limit the location of the food storage container 100.

[0072] It should be noted that the ingredients mentioned above can be vegetables, fruits, fermented foods such as steamed buns or soy sauce, or other types of ingredients. This application does not specifically limit the type of ingredients.

[0073] Those skilled in the art will understand that the structure described above does not constitute a limitation on the refrigerator, and may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0074] Based on the above-described refrigerator hardware structure, various embodiments of the preservation method of this application are presented below.

[0075] like Figure 3 As shown, Figure 3 This is a flowchart of a preservation method provided in one embodiment of this application. The preservation method can be applied to the refrigerator of any of the above embodiments, and may include, but is not limited to, steps S310, S320, S330, and S340.

[0076] Step S310: Obtain the current electrolyte concentration;

[0077] Step S320: During the operation of the electrochemical module, monitor the temperature of the first electrolyte and the first energizing parameters of the electrochemical module;

[0078] Step S330: Determine the first oxygen concentration of the food preservation box body based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameters;

[0079] Step S340: Control the working state of the electrochemical module according to the first oxygen concentration and the preset oxygen concentration range.

[0080] According to the principles of electrochemical reactions, the concentration of oxygen in the reactants, the reaction current / voltage ratio, the electrolyte concentration, and the reaction temperature are the core factors affecting the rate of the oxygen reduction reaction. Therefore, given the electrolyte concentration, reaction temperature, and the reaction current / voltage ratio, the concentration of oxygen in the reactants can be determined.

[0081] Based on the above principles, in this embodiment, the oxygen concentration of the reactants is equivalent to the oxygen concentration of the food storage container, the reaction current / reaction voltage is equivalent to the energizing parameters of the electrochemical module, and the reaction temperature is equivalent to the electrolyte temperature. Therefore, in order to detect the oxygen concentration of the food storage container in real time, this embodiment can obtain the current electrolyte concentration, and detect the first electrolyte temperature and the first energizing parameters of the electrochemical module in real time. Then, the first oxygen concentration of the food storage container is obtained by analyzing the above three data. Next, this embodiment compares the first oxygen concentration with a preset oxygen concentration range to obtain a comparison result. Finally, this embodiment controls the working state of the electrochemical module based on the comparison result.

[0082] It is worth noting that, since the oxygen concentration inside the food storage container can be determined simply by knowing the electrolyte concentration, electrolyte temperature, and energizing parameters, without the need for an oxygen sensor to monitor the oxygen concentration, the present application embodiment can eliminate the need for an additional oxygen sensor hardware structure, thereby solving the problems of short lifespan and high cost of oxygen sensors and meeting the actual application needs of the home appliance industry.

[0083] It should be noted that the first energizing parameter mentioned above can be the first reaction current of the electrochemical module, the first reaction voltage of the electrochemical module, or other electrical signal parameters of the electrochemical module. The embodiments of this application do not specifically limit the type of the first energizing parameter.

[0084] It is understood that the aforementioned preset oxygen concentration range can be pre-set or adaptively adjusted according to the type of food. This application embodiment does not specifically limit the setting method of the preset oxygen concentration range.

[0085] In addition, such as Figure 4 As shown, Figure 4 This is a flowchart of a preservation method provided in another embodiment of this application. The step S310 above, which involves obtaining the current electrolyte concentration, may include, but is not limited to, steps S410, S420, and S430.

[0086] Step S410: Determine that the oxygen concentration inside the food storage container is greater than or equal to the preset concentration value;

[0087] Step S420: Obtain the temperature of the second electrolyte, start the electrochemical module, and obtain the second energizing parameters of the electrochemical module;

[0088] Step S430: Determine the current electrolyte concentration based on the second electrolyte temperature and the second energizing parameters.

[0089] According to the principles of electrochemical reactions, the concentration of oxygen in the reactants, the reaction current / voltage ratio, the electrolyte concentration, and the reaction temperature are the core factors affecting the oxygen reduction reaction rate. Therefore, given the oxygen concentration, reaction temperature, and the reaction current / voltage ratio, the electrolyte concentration can be determined.

[0090] Based on the above principle, in one embodiment, the process of obtaining the current electrolyte concentration in step S310 can be as follows: when the oxygen concentration in the food preservation box is greater than or equal to the preset concentration value, this embodiment can detect the second electrolyte temperature and obtain the second energizing parameter of the electrochemical module after startup. Then, the current electrolyte concentration is obtained by analyzing the data of the above two.

[0091] It should be noted that, since the oxygen concentration inside the food storage container is greater than or equal to the preset concentration value (i.e., the oxygen concentration is saturated), the effect of oxygen concentration on various reaction parameters is minimal. Therefore, in Figure 4 In the method shown, the current electrolyte concentration can be analyzed simply by using the second electrolyte temperature and the second energizing parameter.

[0092] It is worth noting that, due to the above Figure 4 The calculation process for the current electrolyte concentration shown does not require the participation of oxygen concentration parameters. Therefore, there is no need to monitor oxygen concentration through an oxygen sensor, eliminating the need for an additional oxygen sensor hardware structure. This solves the problems of short lifespan and high cost of oxygen sensors and meets the practical application needs of the home appliance industry.

[0093] Additionally, it should be noted that the process of obtaining the current electrolyte concentration in step S310 above can be achieved through... Figure 4 The electrolyte can be obtained in the manner shown, or it can be obtained by user or system input. For example, the user can input the concentration parameters on the surface of the electrolyte packaging into the refrigerator; other methods can also be used, and this application does not specifically limit them.

[0094] It is understood that the aforementioned preset concentration value can be pre-set, and the embodiments of this application do not specifically limit the setting method of the preset concentration value.

[0095] In addition, such as Figure 5 As shown, Figure 5 This is a flowchart of a preservation method provided in another embodiment of this application. Regarding the determination of the first oxygen concentration of the preservation box based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter in step S330 above, it may include, but is not limited to, steps S510 and S520.

[0096] Step S510: Input the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter into the oxygen concentration calculation model;

[0097] Step S520: Obtain the first oxygen concentration by outputting the oxygen concentration calculation model.

[0098] In one embodiment, since the oxygen concentration calculation model includes electrolyte concentration parameters, electrolyte temperature parameters, energizing parameters, and oxygen concentration parameters, and the oxygen concentration parameters are determined by the electrolyte concentration parameters, electrolyte temperature parameters, and energizing parameters, there is a corresponding relationship between the electrolyte concentration parameters, electrolyte temperature parameters, energizing parameters, and oxygen concentration parameters. Therefore, this embodiment of the application can use the oxygen concentration calculation model to analyze the detected current electrolyte concentration, first electrolyte temperature, and first energizing parameter, thereby obtaining the first oxygen concentration corresponding to the above three data.

[0099] It is understood that the oxygen concentration calculation model mentioned above can be a curve, a calculation formula, a table, or a neural network model. This application does not specifically limit the type of oxygen concentration calculation model.

[0100] In addition, such as Figure 6 As shown, Figure 6 This is a flowchart of a preservation method provided in another embodiment of this application. The determination of the current electrolyte concentration based on the second electrolyte temperature and the second energizing parameter in step S430 may include, but is not limited to, steps S610 and S620.

[0101] Step S610: Input the second electrolyte temperature and the second energizing parameter into the electrolyte concentration calculation model;

[0102] Step S620: Obtain the current electrolyte concentration by outputting the electrolyte concentration calculation model.

[0103] In one embodiment, since the electrolyte concentration calculation model includes electrolyte temperature parameters, energizing parameters, and electrolyte concentration parameters, and the electrolyte concentration parameters are determined by the electrolyte temperature parameters and energizing parameters, there is a corresponding relationship between the electrolyte temperature parameters, energizing parameters, and electrolyte concentration parameters. Therefore, this embodiment of the application can use the electrolyte concentration calculation model to analyze the detected second electrolyte temperature and second energizing parameters, thereby obtaining the current electrolyte concentration corresponding to the above two data.

[0104] It is understood that the electrolyte concentration calculation model mentioned above can be a curve, a calculation formula, a table, or a neural network model. This application does not specifically limit the type of electrolyte concentration calculation model.

[0105] It should be noted that the determination in step S410 above that the oxygen concentration inside the food storage container is greater than or equal to a preset concentration value may include, but is not limited to, the following: Figure 7 or Figure 8 The two implementation scenarios are as follows:

[0106] like Figure 7 As shown, Figure 7 This is a flowchart of a preservation method provided in another embodiment of this application. Step S410 described above may include, but is not limited to, steps S710 and S720.

[0107] Step S710: Obtain the on / off status of the food storage container;

[0108] Step S720: When the switch is in the on state, determine that the oxygen concentration inside the food storage container is greater than or equal to the preset concentration value.

[0109] In one embodiment, if the food storage container is opened, the outside air will rapidly exchange with the gas inside the container, causing the oxygen concentration inside the container to quickly exceed a preset value, for example, the oxygen concentration will quickly return to 21%. Therefore, if the food storage container is in the open state, this embodiment of the application will consider the oxygen concentration inside the container to be greater than or equal to the preset value.

[0110] like Figure 8 As shown, Figure 8 This is a flowchart of a preservation method provided in another embodiment of this application. Step S410 may include, but is not limited to, steps S810, S820, and S830.

[0111] Step S810: Obtain the on / off status of the food storage container;

[0112] Step S820: When the switch is in the off state, obtain the closing duration of the food storage container;

[0113] Step S830: When the shutdown time is longer than the preset time, determine that the oxygen concentration inside the food storage container is greater than or equal to the preset concentration value.

[0114] In one embodiment, if the food storage container is not opened, the closing time of the food storage container is further determined. If the closing time is long, it indicates that the oxygen concentration in the food storage container has returned to a preset concentration value or higher. For example, the oxygen concentration will return to more than 15%.

[0115] It should be noted that the control of the electrochemical module's operating state based on the first oxygen concentration and the preset oxygen concentration range in step S340 above may include, but is not limited to, the following: Figure 9 or Figure 10 The two implementation scenarios are as follows:

[0116] like Figure 9 As shown, Figure 9This is a flowchart of a preservation method provided in another embodiment of this application. Step S340 described above may include, but is not limited to, steps S910 and S920.

[0117] Step S910: When the first oxygen concentration is within the preset oxygen concentration range;

[0118] Step S920: Stop the operation of the electrochemical module.

[0119] like Figure 10 As shown, Figure 10 This is a flowchart of a preservation method provided in another embodiment of this application. Step S340 described above may include, but is not limited to, steps S1010 and S1020.

[0120] Step S1010: When the first oxygen concentration is outside the preset oxygen concentration range;

[0121] Step S1020: Keep the electrochemical module running.

[0122] In one embodiment, if the first oxygen concentration is within a preset oxygen concentration range, it indicates that the first oxygen concentration meets the preservation requirements of the food, and the present application embodiment will control the electrochemical module to stop operating; if the first oxygen concentration is outside the preset oxygen concentration range, it indicates that the first oxygen concentration does not yet meet the preservation requirements of the food, and the present application embodiment will control the electrochemical module to continue operating.

[0123] In addition, such as Figure 11 As shown, Figure 11 This is a flowchart of a preservation method provided in another embodiment of this application. The electrochemical module includes a module housing with a cathode electrode, and the module housing is used to store electrolyte; the preservation method may also include, but is not limited to, steps S1110 and S1120.

[0124] Step S1110: Apply current to the cathode electrode;

[0125] Step S1120: Under the action of the cathode electrode, the electrolyte and the air inside the food storage container undergo an oxygen reduction reaction to obtain hydroxide ions, thereby reducing the oxygen concentration inside the food storage container.

[0126] In addition, such as Figure 12 As shown, Figure 12 This is a flowchart of a preservation method provided in another embodiment of this application. The module housing is also provided with an anode electrode, and the anode electrode and the cathode electrode are electrically connected; the preservation method may also include, but is not limited to, steps S1210 and S1220.

[0127] Step S1210: Hydroxide ions undergo an oxygen evolution reaction under the action of the anolyte electrode, releasing water and oxygen.

[0128] Step S1220: Discharge the released oxygen to the outside of the preservation box and store the released water in the module box.

[0129] In one embodiment, such as Figure 11 and Figure 12 As shown, the electrochemical reactions of the electrochemical module in this embodiment include, but are not limited to, the cathode electrode reaction and the anode electrode reaction. The cathode electrode reaction process can be: O2 + 2H2O + 4e = 4OH- - The anode electrode reaction process can be: 4OH - -4e = 2H2O + O2. As can be seen from the above, oxygen is consumed on the cathode side, while oxygen is generated on the anode side.

[0130] Based on the above principles, in order to reduce the oxygen concentration inside the food storage container, this embodiment can connect only the cathode electrode to the inside of the food storage container, thereby removing the oxygen inside the food storage container through the cathode electrode; while the anode electrode is isolated from the inside of the food storage container, so that the oxygen generated by the anode electrode will not re-enter the inside of the food storage container. Therefore, this embodiment can discharge the oxygen generated by the anode electrode to the outside of the food storage container, so that the oxygen concentration inside the food storage container will not rise again due to the anode electrode, thereby enabling the electrochemical module to reduce the oxygen concentration inside the food storage container through electrochemical reaction.

[0131] It should be noted that in order to maintain a constant electrolyte concentration within the module housing, i.e., to maintain the OH- ions in the electrolyte... - Since the concentration remains unchanged, this embodiment of the application requires that the water generated by the anode electrode be stored back in the module box.

[0132] Based on the preservation methods of the above embodiments, the overall embodiments of the preservation methods of this application are presented below.

[0133] like Figure 13 As shown, Figure 13 This is an overall flowchart of a preservation method provided in one embodiment of this application; the overall process includes, but is not limited to, steps S1301 to S1313.

[0134] Step S1301: Begin;

[0135] Step S1302: Record the time t during which the drawer was not opened;

[0136] Step S1303: Determine whether the drawer is open. If yes, proceed to step S1305; otherwise, proceed to step S1304.

[0137] Step S1304: Determine whether t is greater than 24 hours. If yes, proceed to step S1305; otherwise, proceed to step S1302.

[0138] Step S1305, the temperature of loading the second electrolyte is T0;

[0139] Step S1306: Run the electrochemical module;

[0140] Step S1307: Load the second reaction current I0;

[0141] Step S1308: Output the current electrolyte concentration C;

[0142] Step S1309: Monitor the first reaction current I and the first electrolyte temperature T;

[0143] Step S1310: Output the first oxygen concentration c;

[0144] Step S1311: Determine whether the first oxygen concentration c meets the standard. If yes, proceed to step S1312; otherwise, proceed to step S1309.

[0145] Step S1312: The electrochemical module stops operating;

[0146] Step S1313, End.

[0147] Specifically, the preservation method includes the following steps: determining whether the user has opened the drawer (i.e., the preservation box) or whether the drawer has not been opened for a long time; if so, loading the initial temperature of the electrolyte (i.e., the second electrolyte temperature T0) and the initial operating current of the electrochemical module (i.e., the second reaction current I0), and outputting the electrolyte concentration (i.e., the current electrolyte concentration C) according to the system database; by real-time monitoring of the reaction current of the electrochemical module (i.e., the first reaction current I) and the electrolyte temperature (i.e., the first electrolyte temperature T), the system outputs the oxygen concentration in the low-oxygen drawer (i.e., the first oxygen concentration c); determining whether the electrochemical module should continue to operate based on the oxygen concentration, thereby achieving the target oxygen concentration, thus improving the preservation effect and making the oxygen concentration explicit.

[0148] The low-oxygen drawer is equipped with a magnetic switch to determine whether it is open and records the time since the last opening. The electrochemical module, located at the top of the drawer, creates a low-oxygen environment inside. This module utilizes an electrochemical reaction principle, where the oxygen reduction reaction occurs at the cathode: O₂ + 2H₂O + 4e⁻ = 4OH⁻. - .

[0149] As can be seen, oxygen is consumed in the reaction, thus creating a low-oxygen environment. The electrolyte in the electrochemical module can be an alkaline solution such as potassium carbonate or potassium hydroxide, and a temperature sensor is installed to monitor the electrolyte temperature. Based on the principles of electrochemical reactions, the concentration of the reactant oxygen, the reaction current / reaction voltage, and the concentration of the electrolyte (i.e., OH-) are all considered. - The concentration of the reactant oxygen and the reaction temperature are the core factors affecting the rate of the oxygen reduction reaction. Under specific electrochemical modules, given the oxygen concentration of the reactants, the reaction temperature, and the reaction current / voltage ratio, the concentration of the electrolyte can be determined; similarly, given the electrolyte concentration, the reaction temperature, and the reaction current / voltage ratio, the concentration of the reactant oxygen can be determined. Therefore, the above principle can be used to determine the concentration of the reactant oxygen.

[0150] Specifically, in the embodiments of this application, when the oxygen concentration is 15%-21%, the reaction current variation function at different reaction temperatures and electrolyte concentrations can be as follows: Figure 14 As shown. The oxygen concentration at this point is saturated, meaning that at this concentration, it will not affect the various reaction parameters. Figure 14 Curve A1 is the reaction current-reaction temperature curve at a 5% electrolyte concentration, curve A2 is the reaction current-reaction temperature curve at a 10% electrolyte concentration, curve A3 is the reaction current-reaction temperature curve at a 15% electrolyte concentration, curve A4 is the reaction current-reaction temperature curve at a 20% electrolyte concentration, curve A5 is the reaction current-reaction temperature curve at a 25% electrolyte concentration, and curve A6 is the reaction current-reaction temperature curve at a 30% electrolyte concentration.

[0151] Specifically, the embodiments of this application include functions for the change of reactant oxygen concentration under different reaction currents and electrolyte concentrations at different electrolyte temperatures. For example, when the electrolyte temperature is 25°C, the functions for the change of reactant oxygen concentration under different reaction currents and electrolyte concentrations are as follows: Figure 15 As shown. It should be noted that the embodiments of this application include reaction current-oxygen concentration curves with different electrolyte concentrations at electrolyte temperatures ranging from 0-60℃.

[0152] in, Figure 15 Curve B1 is the oxygen concentration-reaction current curve at a 5% electrolyte concentration, curve B2 is the oxygen concentration-reaction current curve at a 10% electrolyte concentration, curve B3 is the oxygen concentration-reaction current curve at a 15% electrolyte concentration, curve B4 is the oxygen concentration-reaction current curve at a 20% electrolyte concentration, curve B5 is the oxygen concentration-reaction current curve at a 25% electrolyte concentration, and curve B6 is the oxygen concentration-reaction current curve at a 30% electrolyte concentration.

[0153] Specifically, such as Figure 13As shown, the process includes the following steps: (1) First, record the time t during which the drawer is not opened. (2) Then determine whether the low-oxygen drawer is open. If the low-oxygen drawer is open, the outside air will rapidly exchange with the gas inside the low-oxygen drawer, and the oxygen concentration will rapidly recover to 21%. (3) Load the second electrolyte temperature T0, and simultaneously run the electrochemical module and load the second reaction current I0. Figure 14 It can be seen that the oxygen concentration at this time is 21%. Given the second electrolyte temperature T0 and the second reaction current I0, the current electrolyte concentration C in the electrochemical module can be determined. (4) During the operation of the electrochemical module, the first reaction current I and the first electrolyte temperature T are monitored in real time. Figure 15 It can be seen that when the temperature T of the first electrolyte, the current concentration C of the electrolyte, and the first reaction current I are known, the first oxygen concentration c of the reaction at this time can be determined. (5) Determine whether the first oxygen concentration c meets the standard and meets the requirements for fruit and vegetable preservation. If so, the module stops running and the program ends. Otherwise, continue to detect the first reaction current I and the temperature T of the first electrolyte and determine whether the first oxygen concentration c meets the standard. When it is determined in step (2) that the drawer is not opened, continue to determine whether the time t of the drawer not being opened is long (>24h). If so, it indicates that the oxygen concentration in the drawer has recovered to >15% and low oxygen treatment is required. Execute step (3).

[0154] Through the above methods, the embodiments of this application have the following technical effects: 1. Automatically monitor the oxygen concentration in a low-oxygen environment and display the concentration to provide feedback to the user, thereby improving user perception; 2. Control the operation of the electrochemical module based on the monitored oxygen concentration to achieve the optimal oxygen concentration for fruit and vegetable preservation; 3. The automatic monitoring solution does not require additional hardware, has the advantages of long lifespan and low cost, and meets the needs of the home appliance industry.

[0155] Based on the preservation methods described in the above embodiments, the following presents various embodiments of the controller, refrigerator, and computer-readable storage medium of this application.

[0156] like Figure 16 As shown, Figure 16 This is a schematic diagram of the structure of a controller for performing a preservation method according to an embodiment of this application. The controller 300 implemented in this application includes: a processor 310, a memory 320, and a computer program stored in the memory 320 and executable on the processor 310, wherein... Figure 16 The example uses a processor 310 and a memory 320.

[0157] The processor 310 and the memory 320 can be connected via a bus or other means. Figure 16 Taking the example of a connection between China and Israel via a bus.

[0158] Memory 320, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 320 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 320 may optionally include remotely located memories 320 relative to processor 310, which can be connected to controller 300 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0159] Those skilled in the art will understand that Figure 16 The device structure shown does not constitute a limitation on the controller 300 and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0160] exist Figure 16 In the controller 300 shown, the processor 310 can be used to call the preservation program stored in the memory 320, thereby implementing the above-described preservation method. Specifically, the non-transitory software program and instructions required to implement the preservation method of the above embodiment are stored in the memory 320, and when executed by the processor 310, the preservation method of the above embodiment is executed.

[0161] It is worth noting that since the controller 300 of this application embodiment can execute the preservation method of any of the above embodiments, the specific implementation method and technical effect of the controller 300 of this application embodiment can refer to the specific implementation method and technical effect of the preservation method of any of the above embodiments.

[0162] In addition, one embodiment of this application provides a refrigerator, including the controller of the above embodiments, wherein the controller executes the preservation method of any of the above embodiments when running a computer program.

[0163] It is worth noting that, since the refrigerator of this application embodiment includes the controller of the above embodiments, and the controller of the above embodiments can execute the preservation method of any of the above embodiments, the specific implementation method and technical effect of the refrigerator of this application embodiment can refer to the specific implementation method and technical effect of the preservation method of any of the above embodiments.

[0164] Furthermore, one embodiment of this application provides a computer-readable storage medium storing computer-executable instructions for performing the above-described preservation method. Exemplarily, the above-described method is executed... Figures 3 to 13 The methods and steps in the text.

[0165] It is worth noting that, since the computer-readable storage medium of this application embodiment can execute the preservation method of any of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of this application embodiment can be referred to the specific implementation and technical effects of the preservation method of any of the above embodiments.

[0166] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0167] The above provides a detailed description of the preferred embodiments of this application. However, this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A method for preserving food, characterized in that, Applied to a refrigerator, the refrigerator is equipped with a food preservation compartment and an electrochemical module for controlling oxygen concentration. The electrochemical module is connected to the food preservation compartment and is used to store electrolyte. The preservation method includes: Obtain the current electrolyte concentration; During the operation of the electrochemical module, the temperature of the first electrolyte and the first energizing parameter of the electrochemical module are monitored, wherein the first energizing parameter is the first reaction current or the first reaction voltage of the electrochemical module; The first oxygen concentration of the food preservation box is determined based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter. The operating state of the electrochemical module is controlled based on the first oxygen concentration and the preset oxygen concentration range.

2. The preservation method according to claim 1, characterized in that, The step of obtaining the current electrolyte concentration includes: Determine that the oxygen concentration inside the food storage container is greater than or equal to a preset concentration value; The second electrolyte temperature is obtained, the electrochemical module is started, and the second energizing parameters of the electrochemical module are obtained. The current electrolyte concentration is determined based on the second electrolyte temperature and the second energizing parameter.

3. The preservation method according to claim 1, characterized in that, Determining the first oxygen concentration of the food preservation box body based on the current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter includes: The current electrolyte concentration, the first electrolyte temperature, and the first energizing parameter are input into the oxygen concentration calculation model, and the first oxygen concentration is obtained by outputting the oxygen concentration calculation model. The oxygen concentration calculation model includes electrolyte concentration parameters, electrolyte temperature parameters, energizing parameters, and oxygen concentration parameters. The oxygen concentration parameters are determined by the electrolyte concentration parameters, electrolyte temperature parameters, and energizing parameters.

4. The preservation method according to claim 2, characterized in that, The step of determining the current electrolyte concentration based on the second electrolyte temperature and the second energizing parameters includes: The second electrolyte temperature and the second energizing parameter are input into the electrolyte concentration calculation model, and the current electrolyte concentration is obtained by outputting the electrolyte concentration calculation model. The electrolyte concentration calculation model includes electrolyte temperature parameters, energizing parameters, and electrolyte concentration parameters, wherein the electrolyte concentration parameters are determined by the electrolyte temperature parameters and the energizing parameters.

5. The preservation method according to claim 2, characterized in that, Determining that the oxygen concentration inside the food storage container is greater than or equal to the preset concentration value includes one of the following: The switch status of the food storage container is obtained. If the switch status is on, the oxygen concentration inside the food storage container is determined to be greater than or equal to a preset concentration value. The switch state of the food storage container is obtained. If the switch state is closed, the closing duration of the food storage container is obtained. If the closing duration is greater than a preset duration, the oxygen concentration inside the food storage container is determined to be greater than or equal to a preset concentration value.

6. The preservation method according to claim 1, characterized in that, The control of the operating state of the electrochemical module based on the first oxygen concentration and the preset oxygen concentration range includes one of the following: When the first oxygen concentration is within the preset oxygen concentration range, the operation of the electrochemical module is stopped. When the first oxygen concentration is outside the preset oxygen concentration range, the electrochemical module continues to operate.

7. The preservation method according to claim 1, characterized in that, The electrochemical module includes a module housing with a cathode electrode, the module housing being used to store electrolyte; the preservation method includes: The electrolyte and the air inside the food preservation container undergo an oxygen reduction reaction with the oxygen in the air under the action of the cathode electrode to produce hydroxide ions, thereby reducing the oxygen concentration inside the food preservation container.

8. The preservation method according to claim 7, characterized in that, The module housing is further provided with an anode electrode, and the anode electrode and the cathode electrode are electrically connected; the preservation method further includes: The hydroxide ions undergo an oxygen evolution reaction under the action of the anode electrode, releasing water and oxygen. The released oxygen is discharged to the outside of the preservation box, and the released water is stored inside the module box.

9. A controller, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the preservation method as described in any one of claims 1 to 8.

10. A refrigerator, characterized in that, Includes the controller as described in claim 9.

11. A computer-readable storage medium, characterized in that: The device stores computer-executable instructions for performing the preservation method as described in any one of claims 1 to 8.

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