Fresh-keeping method, controller, refrigerator and computer readable storage medium

Abstract

The invention provides a fresh-keeping method, a controller, a refrigerator and a computer readable storage medium, the refrigerator is provided with a fresh-keeping box body and an electrochemical module, the electrochemical module is used for storing an electrolyte, and in addition, the fresh-keeping method comprises the steps that the current electrolyte concentration is obtained; during the operation period of the electrochemical module, monitoring the temperature of the first electrolyte and a first power-on parameter of the electrochemical module; determining a first oxygen concentration of the preservation box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter; and controlling the working state of the electrochemical module according to the first oxygen concentration and a preset oxygen concentration range. The oxygen concentration of the preservation box body can be determined only under the condition that the electrolyte concentration, the electrolyte temperature and the power-on parameters are obtained, monitoring through an oxygen sensor is not needed, an oxygen sensor hardware structure does not need to be additionally arranged, the problems that the oxygen sensor is short in service life and high in cost can be solved, and the service life of the preservation box body is prolonged. And the practical application requirements of the household appliance industry are met.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and in particular to a preservation method, a controller, a refrigerator and a computer-readable storage medium. Background Art

[0002] In the relevant technology, oxygen is one of the important reactants for the oxidation reaction of nutrients and the aerobic respiration of fruits and vegetables. A low oxygen environment can effectively inhibit the oxidation reaction rate of nutrients and the aerobic respiration rate of fruits and vegetables, thereby achieving the retention of nutrients and the long-term preservation of fruits and vegetables. Oxygen concentration is crucial to the preservation effect. When the oxygen concentration is too high, fruits and vegetables still maintain normal physiological activities, and the respiration cannot be effectively inhibited, and the preservation effect of fruits and vegetables cannot be effectively improved. When the oxygen concentration is too low, fruits and vegetables will undergo anaerobic respiration to produce alcohol, which is also not conducive to preservation. Therefore, low oxygen preservation requires a suitable oxygen concentration range. Too high or too low is not conducive to the preservation of fruits and vegetables.

[0003] Currently, refrigerators usually monitor oxygen concentration by installing oxygen sensors. However, due to the problems of short life and high cost of oxygen sensors, they cannot meet the actual application needs of the home appliance industry. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a preservation method, a controller, a refrigerator and a computer-readable storage medium, aiming to provide a method for monitoring oxygen concentration without an oxygen sensor, thereby solving the problems of short life and high cost of oxygen sensors.

[0005] In a first aspect, an embodiment of the present application provides a preservation method, which is applied to a refrigerator, wherein the refrigerator is provided with a preservation box body and an electrochemical module for controlling oxygen concentration, wherein the electrochemical module is connected to the preservation box body and is used to store electrolyte; the preservation method comprises:

[0006] Get the current electrolyte concentration;

[0007] During the operation of the electrochemical module, monitoring a first electrolyte temperature and a first power-on parameter of the electrochemical module;

[0008] Determining a first oxygen concentration of the fresh-keeping box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter;

[0009] The working state of the electrochemical module is controlled according to the first oxygen concentration and a preset oxygen concentration range.

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

[0011] Determine that the oxygen concentration in the fresh-keeping box is greater than or equal to a preset concentration value;

[0012] Acquiring a second electrolyte temperature, starting the electrochemical module, and acquiring a second power-on parameter of the electrochemical module;

[0013] The current electrolyte concentration is determined according to the second electrolyte temperature and the second power-on parameter.

[0014] According to some embodiments of the present application, determining the first oxygen concentration of the fresh-keeping box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter includes:

[0015] Inputting the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter into an oxygen concentration calculation model, and obtaining a first oxygen concentration through the output of the oxygen concentration calculation model;

[0016] The oxygen concentration calculation model includes an electrolyte concentration parameter, an electrolyte temperature parameter, a power-on parameter and an oxygen concentration parameter, and the oxygen concentration parameter is determined by the electrolyte concentration parameter, the electrolyte temperature parameter and the power-on parameter.

[0017] According to some embodiments of the present application, determining the current electrolyte concentration according to the second electrolyte temperature and the second power-on parameter includes:

[0018] Inputting the second electrolyte temperature and the second power-on parameter into an electrolyte concentration calculation model, and obtaining a current electrolyte concentration through an output of the electrolyte concentration calculation model;

[0019] The electrolyte concentration calculation model includes an electrolyte temperature parameter, an energization parameter and an electrolyte concentration parameter, and the electrolyte concentration parameter is determined by the electrolyte temperature parameter and the energization parameter.

[0020] According to some embodiments of the present application, determining that the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value includes one of the following:

[0021] Obtaining the switch state of the fresh-keeping box body, and when the switch state is in the on state, determining that the oxygen concentration in the fresh-keeping box body is greater than or equal to a preset concentration value;

[0022] The switch state of the fresh-keeping box body is obtained. When the switch state is in the closed state, the closing time of the fresh-keeping box body is obtained. When the closing time is greater than the preset time, it is determined that the oxygen concentration in the fresh-keeping box body is greater than or equal to the preset concentration value.

[0023] According to some embodiments of the present application, controlling the working state of the electrochemical module according to 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, stopping the operation of the electrochemical module;

[0025] When the first oxygen concentration is outside the preset oxygen concentration range, the electrochemical module is kept running.

[0026] According to some embodiments of the present application, the electrochemical module includes a module box body provided with a cathode electrode, and the module box body is used to store an electrolyte; the preservation method includes:

[0027] The electrolyte and the air in the fresh-keeping box body undergo oxygen reduction reaction on the oxygen in the air under the action of the cathode electrode to obtain hydroxide ions, so as to reduce the oxygen concentration in the fresh-keeping box body.

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

[0029] The hydroxide ions undergo oxygen evolution reaction under the action of the anode electrode to precipitate water and oxygen;

[0030] The precipitated oxygen is discharged to the outside of the fresh-keeping box body, and the precipitated water is stored in the module box body.

[0031] In a second aspect, an embodiment of the present application provides a controller, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the preservation method of the first aspect described above when running the computer program.

[0032] In a third aspect, an embodiment of the present application provides a refrigerator, comprising a controller as described in the second aspect above.

[0033] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the preservation method as described in the first aspect above.

[0034] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: first, the embodiment of the present application will obtain the current electrolyte concentration; then, during the operation of the electrochemical module, the embodiment of the present application will monitor the first electrolyte temperature and the first power-on parameter of the electrochemical module; then, the embodiment of the present application will determine the first oxygen concentration of the fresh-keeping box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter; finally, the embodiment of the present application will control the working state of the electrochemical module according to the first oxygen concentration and the preset oxygen concentration range. Since the embodiment of the present application only needs to determine the oxygen concentration inside the fresh-keeping box body when the electrolyte concentration, electrolyte temperature and power-on parameter are known, and there is no need to monitor the oxygen concentration through an oxygen sensor, the embodiment of the present application does not need to add an additional oxygen sensor hardware structure, thereby solving the problem of short life and high cost of oxygen sensors and meeting the actual application needs of the home appliance industry.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0037] Figure 1 This is a schematic diagram of the installation structure of a fresh-keeping box body and an electrochemical module provided in one embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of the installation position of a magnetic switch of a fresh-keeping box provided by an embodiment of the present application;

[0039] Figure 3 is a flow chart of a preservation method provided by an embodiment of the present application;

[0040] Figure 4 is a flow chart of a preservation method provided by another embodiment of the present application;

[0041] Figure 5 is a flow chart of a preservation method provided by another embodiment of the present application;

[0042] Figure 6 is a flow chart of a preservation method provided by another embodiment of the present application;

[0043] Figure 7 is a flow chart of a preservation method provided by another embodiment of the present application;

[0044] Figure 8is a flow chart of a preservation method provided by another embodiment of the present application;

[0045] Fig. 9 is a flow chart of a preservation method provided by another embodiment of the present application;

[0046] Fig.10 is a flow chart of a preservation method provided by another embodiment of the present application;

[0047] Fig.11 is a flow chart of a preservation method provided by another embodiment of the present application;

[0048] Fig.12 is a flow chart of a preservation method provided by another embodiment of the present application;

[0049] Fig.13 This is an overall flow chart of a preservation method provided by an embodiment of the present application;

[0050] Fig.14 is a graph of reaction temperature and reaction current at different electrolyte concentrations provided by an embodiment of the present application;

[0051] Fig.15 is a graph of oxygen concentration and reaction current at different electrolyte concentrations provided by an embodiment of the present application;

[0052] Fig.16 It is a schematic diagram of a controller for executing a preservation method provided in one embodiment of the present application. DETAILED DESCRIPTION

[0053] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0054] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0057] In some cases, oxygen is one of the important reactants for the oxidation reaction of nutrients and the aerobic respiration of fruits and vegetables. A low oxygen environment can effectively inhibit the oxidation reaction rate of nutrients and the aerobic respiration rate of fruits and vegetables, thereby retaining nutrients and preserving fruits and vegetables for a long period of time. Oxygen concentration is crucial to the preservation effect. When the oxygen concentration is too high, fruits and vegetables still maintain normal physiological activities, and respiration cannot be effectively inhibited, which cannot effectively improve the preservation effect of fruits and vegetables. When the oxygen concentration is too low, fruits and vegetables will undergo anaerobic respiration to produce alcohol, which is also not conducive to preservation. Therefore, low oxygen preservation requires a suitable oxygen concentration range. Too high or too low is not conducive to the preservation of fruits and vegetables.

[0058] However, the existing low-oxygen preservation method does not consider the monitoring of oxygen concentration, resulting in the oxygen concentration being too high or too low, making it impossible to preserve fruits and vegetables. In addition, refrigerators currently usually monitor oxygen concentration by installing oxygen sensors. However, due to the problems of short life and high cost of oxygen sensors, they cannot meet the actual application needs of the home appliance industry.

[0059] Based on the above situation, the embodiments of the present application propose a preservation method, a controller, a refrigerator and a computer-readable storage medium, which are intended to automatically determine the oxygen concentration and control the operation of the electrochemical module so that the low-oxygen space reaches an appropriate oxygen concentration, thereby improving the preservation effect of fruits and vegetables at an appropriate oxygen concentration; and also provide a method for monitoring the oxygen concentration without an oxygen sensor, thereby solving the problems of short life and high cost of oxygen sensors.

[0060] The following is a further description of various embodiments of the refrigerator of the present application in conjunction with the accompanying drawings.

[0061] like Figure 1 As shown, Figure 11 is a schematic diagram of the installation structure of a fresh-keeping box body and an electrochemical module provided in an embodiment of the present application. The refrigerator of the embodiment of the present application includes an electrochemical module 200 and a fresh-keeping box body 100, wherein the fresh-keeping box body 100 has a heat preservation and sealing function and is used to store food, and the electrochemical module 200 is connected to the fresh-keeping box body 100 and can adjust the oxygen concentration inside the fresh-keeping box body 100 through an electrochemical reaction, wherein the electrochemical module 200 stores an electrolyte.

[0062] It should be noted that, regarding the above-mentioned electrochemical module 200, a module box body for storing electrolyte is provided, a cathode electrode and an anode electrode are provided in the module box body, and the anode electrode and the cathode electrode are electrically connected.

[0063] Specifically, the electrochemical reaction of the electrochemical module 200 in the embodiment of the present application includes but is not limited to a cathode electrode reaction and an anode electrode reaction, wherein the cathode electrode reaction process can be: O2+2H2O+4e=4OH - , the anode electrode reaction process can be: 4OH - -4e=2H2O+O2. From the above, it can be seen that oxygen is consumed on the cathode electrode side, while oxygen is produced on the anode electrode side.

[0064] Based on the above principle, if the purpose is to reduce the oxygen concentration inside the fresh-keeping box body 100, the embodiment of the present application can only connect the cathode electrode to the interior of the fresh-keeping box body 100, so that the oxygen inside the fresh-keeping box body 100 can be removed by the cathode electrode; and the anode electrode is isolated from the interior of the fresh-keeping box body 100, so that the oxygen generated by the anode electrode will no longer re-enter the interior of the fresh-keeping box body 100. In this regard, the embodiment of the present application can discharge the oxygen generated by the anode electrode to the outside of the fresh-keeping box body 100, so that the oxygen concentration inside the fresh-keeping box body 100 will not rise again due to the anode electrode, so that the electrochemical module 200 can electrochemically react to reduce the oxygen concentration inside the fresh-keeping box body 100.

[0065] It should be noted that in order to keep the electrolyte concentration in the module box unchanged, that is, to keep the OH - The concentration remains unchanged, and the embodiment of the present application needs to store the water produced by the anode electrode back in the module box.

[0066] Alternatively, if the purpose is to increase the oxygen concentration inside the fresh-keeping box body 100, the embodiment of the present application can only connect the anode electrode to the interior of the fresh-keeping box body 100, so that the oxygen concentration inside the fresh-keeping box body 100 can be increased through the anode electrode; and the cathode electrode is isolated from the interior of the fresh-keeping box body 100, so that the cathode electrode will not consume the oxygen inside the fresh-keeping box body 100. In this regard, the embodiment of the present application can connect the cathode electrode to the outside of the fresh-keeping box body 100, so that the cathode electrode will only react to the oxygen in the external environment of the fresh-keeping box body 100, and therefore will not consume the oxygen inside the fresh-keeping box body 100, so that the electrochemical module 200 can electrochemically react to increase the oxygen concentration inside the fresh-keeping box body 100.

[0067] It is understood that the electrolyte may be water, other liquids containing water, or liquids containing OH. - The embodiment of the present application does not specifically limit the type of electrolyte.

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

[0069] In one embodiment, the electrochemical module 200 of the embodiment of the present application further 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 when the liquid level is low, the user can be prompted to add electrolyte.

[0070] In addition, in one embodiment, if Figure 2 As shown, Figure 2 It is a schematic diagram of the installation position of the magnetic control switch of the fresh-keeping box body provided in an embodiment of the present application; the fresh-keeping box body 100 in the embodiment of the present application is also provided with a magnetic control switch 110, and the magnetic control switch 110 can be used to determine whether the fresh-keeping box body 100 is opened.

[0071] It should be noted that the above-mentioned fresh-keeping box body 100 can be set in the refrigeration space of the refrigerator, can also be set in the freezer space of the refrigerator, and can also be set in other functional spaces of the refrigerator. The embodiment of the present application does not specifically limit the position of the fresh-keeping box body 100.

[0072] It should be noted that the ingredients mentioned above may be vegetables, fruits, fermented foods such as steamed buns or soy sauce, or other types of ingredients. The embodiments of the present application do not specifically limit the types of ingredients.

[0073] Those skilled in the art will appreciate that the structure described above does not constitute a limitation on the refrigerator, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0074] Based on the hardware structure of the above-mentioned refrigerator, various embodiments of the preservation method of the present application are proposed below.

[0075] like Figure 3 As shown, Figure 3 1 is a flow chart of a preservation method provided by an embodiment of the present application. The preservation method can be applied to the refrigerator of any of the above embodiments, and the preservation method can include but is not limited to step S310, step S320, step S330 and step S340.

[0076] Step S310, obtaining the current electrolyte concentration;

[0077] Step S320, during the operation of the electrochemical module, monitoring the first electrolyte temperature and the first power-on parameter of the electrochemical module;

[0078] Step S330, determining a first oxygen concentration of the fresh-keeping box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter;

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

[0080] According to the principle of electrochemical reaction, the reactant oxygen concentration, reaction current / reaction voltage, electrolyte concentration, and reaction temperature are the core factors affecting the oxygen reduction reaction rate. Therefore, when the electrolyte concentration, reaction temperature, and reaction current / reaction voltage at that time are known, the reactant oxygen concentration can be determined.

[0081] Based on the above principle, in the embodiment of the present application, the above-mentioned reactant oxygen concentration is equivalent to the oxygen concentration of the fresh-keeping box body, the above-mentioned reaction current / reaction voltage is equivalent to the power-on parameter of the electrochemical module, and the above-mentioned reaction temperature is equivalent to the electrolyte temperature; therefore, in order to detect the oxygen concentration of the fresh-keeping box body in real time, the embodiment of the present application can obtain the current electrolyte concentration of the electrolyte, and detect the first electrolyte temperature of the electrolyte in real time, and detect the first power-on parameter of the electrochemical module in real time; then, the first oxygen concentration of the fresh-keeping box body is obtained according to the above three data analyses; then, the embodiment of the present application compares the first oxygen concentration with the preset oxygen concentration range to obtain a comparison result; finally, the embodiment of the present application controls the working state of the electrochemical module according to the comparison result.

[0082] It is worth noting that since the embodiment of the present application only needs to know the electrolyte concentration, electrolyte temperature and power-on parameters to determine the oxygen concentration inside the fresh-keeping box, there is no need to monitor the oxygen concentration through an oxygen sensor. Therefore, the embodiment of the present application does not need to add an additional hardware structure of an oxygen sensor, thereby solving the problems of short life and high cost of oxygen sensors and meeting the actual application needs of the home appliance industry.

[0083] It should be noted that the above-mentioned first power-on parameter may 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 embodiment of the present application does not specifically limit the type of the first power-on parameter.

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

[0085] In addition, if Figure 4 As shown, Figure 4 This is a flow chart of a preservation method provided by another embodiment of the present application. The acquisition of the current electrolyte concentration in the above step S310 may include but is not limited to step S410, step S420 and step S430.

[0086] Step S410, determining that the oxygen concentration in the fresh-keeping box is greater than or equal to a preset concentration value;

[0087] Step S420, obtaining a second electrolyte temperature, starting the electrochemical module, and obtaining a second power-on parameter of the electrochemical module;

[0088] Step S430: determining the current electrolyte concentration according to the second electrolyte temperature and the second power-on parameter.

[0089] According to the principle of electrochemical reaction, the reactant oxygen concentration, reaction current / reaction voltage, electrolyte concentration and reaction temperature are the core factors affecting the oxygen reduction reaction rate. Therefore, when the reactant oxygen concentration, reaction temperature and the reaction current / reaction voltage at that time are known, the electrolyte concentration can be determined.

[0090] Based on the above principle, in one embodiment, the process of obtaining the current electrolyte concentration in the above step S310 can be specifically as follows: when the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value, the embodiment of the present application can detect the second electrolyte temperature of the electrolyte, and obtain the second power-on parameter of the electrochemical module after startup, and then obtain the current electrolyte concentration based on the above two data analysis.

[0091] It should be noted that, since the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value, that is, the oxygen concentration is in a saturated state, the effect of the oxygen concentration on each reaction parameter will be minimal. Figure 4 In the method flow shown, the current electrolyte concentration can be analyzed only by the second electrolyte temperature and the second power-on parameter.

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

[0093] In addition, it should be noted that, in addition to obtaining the current electrolyte concentration in step S310, Figure 4 It can be obtained in the manner shown, or it can be obtained according to user or system input. For example, the user can input the concentration parameters of the surface of the electrolyte package into the refrigerator; it can also be obtained in other ways, which are not specifically limited in this application.

[0094] It can be understood that the above-mentioned preset concentration value can be pre-set, and the embodiment of the present application does not specifically limit the setting method of the preset concentration value.

[0095] In addition, if Figure 5 As shown, Figure 5 The flowchart of the preservation method provided by another embodiment of the present application is as follows. The above step S330 of determining the first oxygen concentration of the preservation box according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter may include but is not limited to step S510 and step S520.

[0096] Step S510, inputting the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter into the oxygen concentration calculation model;

[0097] Step S520: Obtain a first oxygen concentration through the output of the oxygen concentration calculation model.

[0098] In one embodiment, since the oxygen concentration calculation model includes electrolyte concentration parameters, electrolyte temperature parameters, power-on parameters and oxygen concentration parameters, the oxygen concentration parameters are determined by the electrolyte concentration parameters, electrolyte temperature parameters and power-on parameters, that is, there is a corresponding relationship between the electrolyte concentration parameters, electrolyte temperature parameters, power-on parameters and oxygen concentration parameters. Therefore, the embodiment of the present application can analyze the detected current electrolyte concentration, the first electrolyte temperature and the first power-on parameter through the oxygen concentration calculation model, so as to obtain the first oxygen concentration corresponding to the above three data.

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

[0100] In addition, if Figure 6 As shown, Figure 6 This is a flow chart of a preservation method provided by another embodiment of the present application. Regarding the determination of the current electrolyte concentration according to the second electrolyte temperature and the second power-on parameter in the above step S430, it may include but is not limited to step S610 and step S620.

[0101] Step S610, inputting the second electrolyte temperature and the second power-on parameter into the electrolyte concentration calculation model;

[0102] Step S620: obtaining the current electrolyte concentration through the output of the electrolyte concentration calculation model.

[0103] In one embodiment, since the electrolyte concentration calculation model includes electrolyte temperature parameters, power-on parameters and electrolyte concentration parameters, the electrolyte concentration parameters are determined by the electrolyte temperature parameters and the power-on parameters, that is, there is a corresponding relationship between the electrolyte temperature parameters, the power-on parameters and the electrolyte concentration parameters. Therefore, the embodiment of the present application can analyze the detected second electrolyte temperature and the second power-on parameter through the electrolyte concentration calculation model, so as to obtain the current electrolyte concentration corresponding to the above two data.

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

[0105] It should be noted that, regarding the above step S410 of determining that the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value, it may include but is not limited to Figure 7 or Figure 8 There are two implementation scenarios, as follows:

[0106] like Figure 7 As shown, Figure 7 This is a flow chart of a preservation method provided by another embodiment of the present application. Regarding the above step S410, it may include but is not limited to step S710 and step S720.

[0107] Step S710, obtaining the switch status of the fresh-keeping box;

[0108] Step S720: When the switch is in the on state, determine whether the oxygen concentration in the fresh-keeping box is greater than or equal to a preset concentration value.

[0109] In one embodiment, if the fresh-keeping box is opened, then the outside air will quickly exchange with the gas in the fresh-keeping box, so that the oxygen concentration in the fresh-keeping box will quickly exceed the preset concentration value, for example, the oxygen concentration will quickly return to 21%. Therefore, if the switch state of the fresh-keeping box is open, then the embodiment of the present application will consider that the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value.

[0110] like Figure 8 As shown, Figure 8 This is a flow chart of a preservation method provided by another embodiment of the present application. Regarding the above step S410, it may include but is not limited to step S810, step S820 and step S830.

[0111] Step S810, obtaining the switch status of the fresh-keeping box;

[0112] Step S820: when the switch state is closed, obtain the closing time of the fresh-keeping box body;

[0113] Step S830: When the closing time is greater than the preset time, determine that the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value.

[0114] In one embodiment, if the fresh-keeping box is not opened, the closing time of the fresh-keeping box will continue to be determined. If the closing time is long, it indicates that the oxygen concentration in the fresh-keeping box has returned to above the preset concentration value. For example, the oxygen concentration will return to above 15%.

[0115] It should be noted that the control of the working state of the electrochemical module according to the first oxygen concentration and the preset oxygen concentration range in step S340 may include but is not limited to: Fig. 9 or Fig.10 There are two implementation scenarios, as follows:

[0116] like Fig. 9 As shown, Fig. 9This is a flow chart of a preservation method provided by another embodiment of the present application. The above step S340 may include but is not limited to step S910 and step S920.

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

[0118] Step S920, stop the operation of the electrochemical module.

[0119] like Fig.10 As shown, Fig.10 This is a flow chart of a preservation method provided by another embodiment of the present application. The above step S340 may include but is not limited to step S1010 and step 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 the preset oxygen concentration range, it indicates that the first oxygen concentration meets the food preservation requirements, and the embodiment of the present application will control the electrochemical module to stop running; if the first oxygen concentration is outside the preset oxygen concentration range, it indicates that the first oxygen concentration does not meet the food preservation requirements, and the embodiment of the present application will control the electrochemical module to continue running.

[0123] In addition, if Fig.11 As shown, Fig.11 1 is a flow chart of a preservation method provided by another embodiment of the present application. The electrochemical module includes a module box body provided with a cathode electrode, and the module box body is used to store electrolyte; the preservation method may also include but is not limited to step S1110 and step S1120.

[0124] Step S1110, energizing the cathode electrode;

[0125] Step S1120: The electrolyte and the air in the fresh-keeping box undergo oxygen reduction reaction on the oxygen in the air under the action of the cathode electrode to obtain hydroxide ions, so as to reduce the oxygen concentration in the fresh-keeping box.

[0126] In addition, if Fig.12 As shown, Fig.12 This is a flow chart of a preservation method provided by another embodiment of the present application. The module box body 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 step S1210 and step S1220.

[0127] Step S1210, causing the hydroxide ions to undergo oxygen evolution reaction under the action of the anode electrode to precipitate water and oxygen;

[0128] Step S1220, discharge the precipitated oxygen to the outside of the fresh-keeping box body, and store the precipitated water in the module box body.

[0129] In one embodiment, if Fig.11 and Fig.12 As shown, the electrochemical reaction of the electrochemical module in the embodiment of the present application includes but is not limited to cathode electrode reaction and anode electrode reaction, wherein the cathode electrode reaction process can be: O2+2H2O+4e=4OH - , the anode electrode reaction process can be: 4OH - -4e=2H2O+O2. From the above, it can be seen that oxygen is consumed on the cathode electrode side, while oxygen is produced on the anode electrode side.

[0130] Based on the above principle, if the purpose is to reduce the oxygen concentration inside the fresh-keeping box body, the embodiment of the present application can only connect the cathode electrode to the interior of the fresh-keeping box body, so that the oxygen inside the fresh-keeping box body can be removed through the cathode electrode; and the anode electrode is isolated from the interior of the fresh-keeping box body, so that the oxygen generated by the anode electrode will no longer re-enter the interior of the fresh-keeping box body. In this regard, the embodiment of the present application can discharge the oxygen generated by the anode electrode to the outside of the fresh-keeping box body, so that the oxygen concentration inside the fresh-keeping box body will not rise again due to the anode electrode, so that the electrochemical module can electrochemically react to reduce the oxygen concentration inside the fresh-keeping box body.

[0131] It should be noted that in order to keep the electrolyte concentration in the module box unchanged, that is, to keep the OH - The concentration remains unchanged, and the embodiment of the present application needs to store the water produced by the anode electrode back in the module box.

[0132] Based on the preservation methods of the above-mentioned embodiments, overall embodiments of the preservation methods of the present application are respectively presented below.

[0133] like Fig.13 As shown, Fig.13 It is an overall flow chart of the preservation method provided by an embodiment of the present application; the overall flow includes but is not limited to steps S1301 to S1313.

[0134] Step S1301, start;

[0135] Step S1302, record the drawer unopened time t;

[0136] Step S1303, determine whether the drawer is open, if yes, execute step S1305, if no, execute step S1304;

[0137] Step S1304, determine whether t is greater than 24 hours, if so, execute step S1305, if not, execute step S1302;

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

[0139] Step S1306, running the electrochemical module;

[0140] Step S1307, loading the second reaction current I0;

[0141] Step S1308, outputting the current electrolyte concentration C;

[0142] Step S1309, monitoring the first reaction current I and the first electrolyte temperature T;

[0143] Step S1310, outputting a first oxygen concentration c;

[0144] Step S1311, determine whether the first oxygen concentration c meets the standard, if yes, execute step S1312, if no, execute step S1309;

[0145] Step S1312, the electrochemical module stops running;

[0146] Step S1313, end.

[0147] Specifically, the preservation method includes the following steps: determining whether the user opens the drawer (i.e., the preservation box body) or has not opened the drawer for a long time; if so, loading the initial temperature of the electrolyte (i.e., the second electrolyte temperature T0) and the initial working 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 the reaction current (i.e., the first reaction current I) and the electrolyte temperature (i.e., the first electrolyte temperature T) of the electrochemical module, the system outputs the oxygen concentration in the low-oxygen drawer (i.e., the first oxygen concentration c); determining whether the electrochemical module continues to operate according to the oxygen concentration, so as to achieve the target oxygen concentration, thereby achieving the purpose of improving the preservation effect and making the oxygen concentration explicit.

[0148] Among them, a magnetic switch is set in the low oxygen drawer to determine whether the low oxygen drawer is open. And record the time since the drawer was last opened. The electrochemical module is set on the top of the drawer to achieve a low oxygen concentration environment in the drawer. The electrochemical module adopts the principle of electrochemical reaction, in which the cathode undergoes an oxygen reduction reaction: O2+2H2O+4e=4OH - .

[0149] It can be seen that oxygen is consumed by the reaction, thereby forming a hypoxic environment. The electrolyte in the electrochemical module can be an alkaline solution such as potassium carbonate or potassium hydroxide, and a temperature sensor is set to monitor the electrolyte temperature. According to the principle of electrochemical reaction, the concentration of reactant oxygen, reaction current / reaction voltage, and electrolyte concentration (i.e., OH - The concentration of oxygen and the reaction temperature are the core factors affecting the rate of the oxygen reduction reaction. Under a specific electrochemical module, when the reactant oxygen concentration, reaction temperature and the reaction current / reaction voltage at this time are known, the concentration of the electrolyte can be determined; similarly, when the electrolyte concentration, reaction temperature and the reaction current / reaction voltage at this time are known, the concentration of the reactant oxygen can be determined. Therefore, the above principle can be used to determine the reactant oxygen concentration.

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

[0151] Specifically, the embodiment of the present application contains the reactant oxygen concentration change function of different electrolyte concentrations under different reaction currents when the electrolyte temperature is different. For example, when the electrolyte temperature is 25°C, the reactant oxygen concentration change function of different electrolyte concentrations under different reaction currents is as follows: Fig.15 It should be noted that the embodiments of the present application contain reaction current-oxygen concentration curves of different electrolyte concentrations at electrolyte temperatures of 0-60°C.

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

[0153] Specifically, Fig.13As shown, the following steps are included: (1) First, record the time t when the drawer is not opened. (2) Then determine whether the hypoxic drawer is opened. If the hypoxic drawer is opened, the outside air will quickly exchange with the gas in the hypoxic drawer, and the oxygen concentration will quickly return to 21%. (3) Load the second electrolyte temperature T0, run the electrochemical module at the same time and load the second reaction current I0. Fig.14 It can be seen that the oxygen concentration is 21% at this time. When the second electrolyte temperature T0 and the second reaction current I0 are known, 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. Fig.15 It can be seen that when the first electrolyte temperature T, the current electrolyte concentration C 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 first electrolyte temperature T 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 in which the drawer is not opened is long (>24h). If so, it indicates that the oxygen concentration in the drawer has returned to>15% at this time, and hypoxic treatment is required. Execute step (3).

[0154] Through the above method, the embodiments of the present application have the following technical effects: 1. Automatically monitor the oxygen concentration in a low-oxygen environment, and display the concentration to feed back to the user, thereby improving user perception; 2. Control the operation of the electrochemical module according to the monitored oxygen concentration to achieve the optimal oxygen concentration for preserving fruits and vegetables; 3. The automatic monitoring solution does not require additional hardware, has the advantages of long life and low cost, and meets the needs of the home appliance industry.

[0155] Based on the preservation methods of the above-mentioned embodiments, various embodiments of the controller, refrigerator and computer-readable storage medium of the present application are respectively proposed below.

[0156] like Fig.16 As shown, Fig.16 300 is a schematic diagram of a controller for executing a preservation method provided by an embodiment of the present application. The controller 300 implemented in the present application includes: a processor 310, a memory 320, and a computer program stored in the memory 320 and executable on the processor 310, wherein: Fig.16 In the figure, a processor 310 and a memory 320 are taken as an example.

[0157] The processor 310 and the memory 320 may be connected via a bus or other means. Fig.16 The example of connecting through bus is taken in the following.

[0158] The 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. In addition, the memory 320 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 320 may optionally include a memory 320 remotely arranged relative to the processor 310, and these remote memories 320 may be connected to the controller 300 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0159] Those skilled in the art will understand that Fig.16 The device structure shown in the figure does not constitute a limitation on the controller 300, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

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

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

[0162] In addition, an embodiment of the present application further provides a refrigerator, comprising a controller of the above embodiment, 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 the embodiment of the present application includes the controller of the above-mentioned embodiment, and the controller of the above-mentioned embodiment can execute the preservation method of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the refrigerator of the embodiment of the present application can refer to the specific implementation methods and technical effects of the preservation method of any of the above-mentioned embodiments.

[0164] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-described preservation method. Figures 3 to 13 The method steps in .

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

[0166] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium 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 include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0167] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A preservation method, characterized in that: Applied to a refrigerator, the refrigerator is provided with a fresh-keeping box body and an electrochemical module for controlling oxygen concentration, the electrochemical module is connected to the fresh-keeping box body, and the electrochemical module is used to store electrolyte; the fresh-keeping method comprises: Get the current electrolyte concentration; During the operation of the electrochemical module, monitoring a first electrolyte temperature and a first power-on parameter of the electrochemical module; Determining a first oxygen concentration of the fresh-keeping box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter; The working state of the electrochemical module is controlled according to the first oxygen concentration and a preset oxygen concentration range.

2. The preservation method according to claim 1, characterized in that: The obtaining of the current electrolyte concentration includes: Determine that the oxygen concentration in the fresh-keeping box is greater than or equal to a preset concentration value; Acquiring a second electrolyte temperature, starting the electrochemical module, and acquiring a second power-on parameter of the electrochemical module; The current electrolyte concentration is determined according to the second electrolyte temperature and the second power-on parameter.

3. The preservation method according to claim 1, characterized in that: The determining the first oxygen concentration of the fresh-keeping box body according to the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter includes: Inputting the current electrolyte concentration, the first electrolyte temperature and the first power-on parameter into an oxygen concentration calculation model, and obtaining a first oxygen concentration through the output of the oxygen concentration calculation model; The oxygen concentration calculation model includes an electrolyte concentration parameter, an electrolyte temperature parameter, a power-on parameter and an oxygen concentration parameter, and the oxygen concentration parameter is determined by the electrolyte concentration parameter, the electrolyte temperature parameter and the power-on parameter.

4. The preservation method according to claim 2, characterized in that: The determining the current electrolyte concentration according to the second electrolyte temperature and the second power-on parameter includes: Inputting the second electrolyte temperature and the second power-on parameter into an electrolyte concentration calculation model, and obtaining a current electrolyte concentration through an output of the electrolyte concentration calculation model; The electrolyte concentration calculation model includes an electrolyte temperature parameter, an energization parameter and an electrolyte concentration parameter, and the electrolyte concentration parameter is determined by the electrolyte temperature parameter and the energization parameter.

5. The preservation method according to claim 2, characterized in that: Determining that the oxygen concentration in the fresh-keeping box is greater than or equal to the preset concentration value includes one of the following: Obtaining the switch state of the fresh-keeping box body, and when the switch state is in the on state, determining that the oxygen concentration in the fresh-keeping box body is greater than or equal to a preset concentration value; The switch state of the fresh-keeping box body is obtained. When the switch state is in the closed state, the closing time of the fresh-keeping box body is obtained. When the closing time is greater than the preset time, it is determined that the oxygen concentration in the fresh-keeping box body is greater than or equal to the preset concentration value.

6. The preservation method according to claim 1, characterized in that: The controlling the working state of the electrochemical module according to 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, stopping the operation of the electrochemical module; When the first oxygen concentration is outside the preset oxygen concentration range, the electrochemical module is kept running.

7. The preservation method according to claim 1, characterized in that: The electrochemical module includes a module box body provided with a cathode electrode, and the module box body is used to store an electrolyte; the preservation method includes: The electrolyte and the air in the fresh-keeping box body undergo oxygen reduction reaction on the oxygen in the air under the action of the cathode electrode to obtain hydroxide ions, so as to reduce the oxygen concentration in the fresh-keeping box body.

8. The preservation method according to claim 7, characterized in that: The module box body is also provided with an anode electrode, and the anode electrode is electrically connected to the cathode electrode; the preservation method further comprises: The hydroxide ions undergo oxygen evolution reaction under the action of the anode electrode to precipitate water and oxygen; The precipitated oxygen is discharged to the outside of the fresh-keeping box body, and the precipitated water is stored in the module box body.

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 executes the preservation method according to any one of claims 1 to 8 when executing the computer program.

10. A refrigerator, characterized in that: Comprising a controller as claimed in claim 9.

11. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the preservation method according to any one of claims 1 to 8.

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