Deoxidizing device, deoxidizing method, controller and refrigeration fresh-keeping equipment

Abstract

The invention discloses a deoxygenization device, a deoxygenization method, a controller and refrigeration fresh-keeping equipment, the deoxygenization device comprises a deoxygenization bin and a deoxygenization module used for deoxygenization of the deoxygenization bin, and the deoxygenization method comprises the steps that the deoxygenization module is started with target driving current, and the continuous operation duration of the deoxygenization module is recorded; and according to the target driving current, the continuous operation duration and the volume of the deoxidizing bin, the current oxygen concentration in the deoxidizing bin is determined. The condition that the oxygen concentration in the deoxygenization bin changes along with time is determined by utilizing the working characteristics when the deoxygenization module continuously operates at the target driving current and combining the current volume of the deoxygenization device, the oxygen concentration in the deoxygenization bin can be accurately reduced under the condition that an oxygen concentration sensor is not installed, and therefore the deoxygenization and fresh-keeping requirements are met, and the service life of the deoxygenization bin is prolonged. And the equipment cost and the later maintenance cost are also reduced.

Description

Technical Field

[0001] The present application relates to the field of fresh-keeping technology, and in particular to a deoxygenation device, a deoxygenation method, a controller and refrigeration and fresh-keeping equipment. Background Art

[0002] Fresh-keeping equipment can preserve fresh ingredients such as fruits and vegetables and extend the storage time of fresh ingredients. For fruit and vegetable ingredients, the deoxygenation space in the fresh-keeping equipment can be used to reduce the oxygen content in the storage environment, thereby reducing the respiration intensity of fruits and vegetables and prolonging the ripening process of fruits and vegetables, thereby achieving long-term preservation.

[0003] In order to accurately control the oxygen concentration in the deoxygenation space, the related technology uses a deoxygenation module and an oxygen concentration sensor to control the deoxygenation process of the deoxygenation module through the oxygen concentration detection value of the oxygen concentration sensor. However, the cost of oxygen concentration sensors is usually very high and the life span is short, which increases the cost of fresh-keeping equipment and after-sales costs, making it difficult to promote and apply in industrialization. Summary of the invention

[0004] The embodiments of the present application provide a deoxygenation device, a deoxygenation method, a controller, and a refrigeration and fresh-keeping device, which do not require the installation of an oxygen concentration sensor, thereby reducing equipment costs.

[0005] In a first aspect, an embodiment of the present application provides a deoxygenation device, comprising:

[0006] Deoxygenation bin, used to store food;

[0007] A deoxygenation module, used for deoxygenating the deoxygenation bin;

[0008] The controller is used to start the deoxygenation module with a target driving current and record the continuous operation time of the deoxygenation module, and is also used to determine the current oxygen concentration of the deoxygenation bin according to the target driving current, the continuous operation time and the volume of the deoxygenation bin.

[0009] In some embodiments, the deoxygenation module is an electrochemical deoxygenation device driven by a constant current, and the target driving current is a constant current.

[0010] In a second aspect, an embodiment of the present application provides a deoxygenation method, which is applied to a deoxygenation device, wherein the deoxygenation device includes a deoxygenation bin and a deoxygenation module for deoxygenating the deoxygenation bin; the deoxygenation method includes:

[0011] Starting the deoxygenation module with a target driving current, and recording the continuous operation time of the deoxygenation module;

[0012] The current oxygen concentration in the deoxygenation bin is determined according to the target driving current, the continuous operation time and the volume of the deoxygenation bin.

[0013] In some embodiments, the deoxygenation module is an electrochemical deoxygenation device driven by a constant current; the deoxygenation module is started with a target driving current, including:

[0014] Determining a constant current driving current value of the deoxygenation module;

[0015] The deoxidation module is started with the constant current driving current value.

[0016] In some embodiments, determining the current oxygen concentration in the deoxygenation bin according to the target driving current, the continuous operation time and the volume of the deoxygenation bin includes:

[0017] Determining an electrochemical reaction parameter of the deoxygenation module, wherein the electrochemical reaction parameter represents the amount of charge transferred by oxygen molecules during oxygen reduction or oxygen evolution in the deoxygenation module;

[0018] The current oxygen concentration in the deoxygenation chamber is determined according to the electrochemical reaction parameter, the target driving current, the continuous operation time, and the volume of the deoxygenation chamber.

[0019] In some embodiments, the deoxygenation method further comprises:

[0020] When the continuous operation time reaches a preset first time, the deoxygenation module is shut down.

[0021] In some embodiments, the deoxygenation method further comprises:

[0022] When it is detected that the deoxygenation bin is opened, the deoxygenation module is shut down.

[0023] In some embodiments, after shutting down the deoxygenation module, the deoxygenation method further comprises:

[0024] When it is detected that the deoxygenation chamber is opened for a time shorter than a preset second time, it is closed, and the deoxygenation module continues to be operated according to the continuous operation time recorded before the deoxygenation module is shut down;

[0025] When it is detected that the deoxygenation chamber is opened for a period exceeding a preset second period, it is closed, the continuous operation time is cleared, and the deoxygenation module is restarted.

[0026] In a third aspect, an embodiment of the present application provides a controller comprising at least one processor and a memory for communicating with the at least one processor; the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the deoxygenation method as described in the embodiment of the second aspect.

[0027] In a fourth aspect, an embodiment of the present application provides a refrigerator, comprising the deoxygenation device of the embodiment of the first aspect or the controller of the embodiment of the third aspect.

[0028] In some embodiments, the refrigeration and fresh-keeping equipment further includes an oxygen concentration display device, and the oxygen concentration display device is used to display the current oxygen concentration of the deoxygenation bin.

[0029] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the deoxygenation method as described in the second aspect.

[0030] The deoxygenation device, deoxygenation method, controller and refrigeration and preservation equipment of the embodiments of the present application have at least the following beneficial effects: utilizing the working characteristics of the deoxygenation module when it operates continuously at the target driving current, combined with the volume of the current deoxygenation device, determining the change of oxygen concentration in the deoxygenation bin over time, and being able to accurately reduce the oxygen concentration in the deoxygenation bin without installing an oxygen concentration sensor, thereby meeting the deoxygenation and preservation requirements, and also reducing equipment costs and subsequent maintenance costs.

[0031] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of a deoxygenation device provided in an embodiment of the present application;

[0033] Figure 2 is an overall flow chart of the deoxygenation method provided in the embodiment of the present application;

[0034] Figure 3 This is a flow chart of a constant current driven deoxygenation module provided in an embodiment of the present application;

[0035] Figure 4 is a flow chart for determining the current oxygen concentration provided by an embodiment of the present application;

[0036] Figure 5 is a control flow chart for shutting down the deoxygenation module for a preset first time period provided in an embodiment of the present application;

[0037] Figure 6 This is a flow chart of a treatment method after the deoxygenation bin is opened provided in an embodiment of the present application;

[0038] Figure 7 It is a comparison chart of the measured and calculated oxygen concentration curves provided in the embodiments of the present application. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the characteristics, operations or features described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be replaced or adjusted in order in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the accompanying drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary sequence, unless otherwise specified that a certain sequence must be followed.

[0040] 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.

[0041] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0042] In deoxygenation and fresh-keeping equipment, the deoxygenation module and oxygen concentration sensor are used together. The oxygen concentration detection value of the oxygen concentration sensor is used to control the deoxygenation process of the deoxygenation module. Controlling the oxygen concentration to the target concentration value can inhibit the respiration of the food. However, the cost of oxygen concentration sensors is usually very high and the life span is short, which increases the cost of fresh-keeping equipment and after-sales costs, making it difficult to promote and apply in industrialization.

[0043] Based on this, the embodiments of the present application provide a deoxygenation device, a deoxygenation method, a controller and a refrigeration and preservation equipment, which can deoxygenate the deoxygenation bin without relying on an oxygen sensor and can determine the current oxygen concentration of the deoxygenation bin, thereby saving equipment costs.

[0044] The following is a description of the deoxygenation device, deoxygenation method, controller and refrigeration and fresh-keeping equipment in conjunction with the accompanying drawings:

[0045] Reference Figure 1 As shown, a deoxygenation device provided in an embodiment of the present application includes:

[0046] The deoxygenation chamber 100 is used to store food;

[0047] The deoxygenation module 200 is used to deoxygenate the deoxygenation chamber 100;

[0048] The controller is used to start the deoxygenation module 200 with a target driving current and record the continuous operation time of the deoxygenation module 200 , and is also used to determine the current oxygen concentration of the deoxygenation chamber 100 according to the target driving current, the continuous operation time and the volume of the deoxygenation chamber 100 .

[0049] The deoxygenation bin 100 has a certain volume. When food is placed in the deoxygenation bin 100, the deoxygenation module 200 needs to reduce the oxygen concentration in the deoxygenation bin 100 to a target concentration value, thereby suppressing the breathing intensity of the food and extending the shelf life of the food. Without setting an oxygen concentration sensor, the deoxygenation bin 100 of a specific volume is deoxygenated by relying on the target driving current and continuous operation time of the deoxygenation module 200. It is possible to determine the law of the change of the oxygen concentration in the deoxygenation bin 100 over time, and thus determine when the oxygen concentration in the deoxygenation bin 100 drops to the target concentration value based on the target driving current and continuous operation time. In this way, there is no need to use an oxygen concentration sensor, thereby reducing the material cost of the preservation equipment and avoiding the need for later maintenance of oxygen concentration sensors with a short lifespan.

[0050] The deoxygenation module 200 of the embodiment of the present application is a constant current driven electrochemical deoxygenation device. By setting the target driving current to a constant current, the electrochemical deoxygenation device can be controlled to operate at a certain deoxygenation rate. Then, by judging the continuous operation time of the deoxygenation module 200, the current oxygen concentration in the deoxygenation chamber 100 can be determined.

[0051] The electrochemical deoxygenation process is usually completed based on two reactions: oxygen reduction reaction and oxygen evolution reaction. The oxygen in the air is converted into ions on the cathode side through the oxygen reduction reaction. The ions migrate to the anode side through the diaphragm and then undergo the oxygen evolution reaction to become oxygen again. In an alkaline electrochemical system, the relevant reaction equation is as follows:

[0052] Cathode (ORR reaction): O2+2H2O+ze - =4OH -

[0053] Anode (OER reaction): 4OH - -ze - =O2+2H2O

[0054] Where z is the amount of charge transferred by a single oxygen molecule, which is a constant that is only related to the reaction path (its value is between 2 and 4).

[0055] For oxygen reduction and oxygen evolution reactions, the following relationship exists:

[0056] n O2 =zne

[0057] n O2 is the amount of oxygen molecules reacting, n e is the amount of electronic material transferred;

[0058] At the same time, there is a quantitative relationship between the amount of electron substances transferred by the reaction and the reaction current, and between the amount of oxygen molecules and the volume of oxygen. Therefore, the relationship between the reaction current and the volume of oxygen transferred per unit time can be given as:

[0059] V=Vm*I / (z*F)

[0060] Among them, n O2 =V / Vm,n e =z*(I / F), V is the volume of oxygen transferred per unit time; I is the reaction current, Vm is the molar volume of the gas, which is 22.4L / mol at 0 degrees Celsius, and F is the Faraday constant, which is 96485C / mol.

[0061] In the above relationship, z, Vm, and F are all constants when the reaction conditions are constant, and the reaction current I is a function related to time, so V is also a function related to time. By integrating the deoxygenation time t, the total volume of oxygen removed can be obtained:

[0062] V1=∫V(t)dt

[0063] Among them, V1 is the total volume of oxygen removed; through this relationship, a quantitative relationship between the reaction current on the battery stack during the operation of the measurement module and the amount of oxygen removed can be established, and then the oxygen concentration in the deoxygenation chamber 100 can be calculated.

[0064] Assuming that the volume of the deoxygenation chamber 100 is V0, and the volume proportion of oxygen in the air is 21%, the oxygen concentration x in the deoxygenation chamber 100 and the total volume of oxygen removed at the current time are related as follows:

[0065] x=21%-V1 / V0

[0066] Therefore, the total relationship between the oxygen concentration in the deoxygenation chamber 100 and the reaction current is:

[0067] x=21%-∫22.4*I(t) / (z*96485*V0)dt

[0068] It can be seen from the above formula that when the deoxygenation volume V0 is constant, the electrochemical deoxygenation module 200 operates under constant current conditions, that is, when I is a certain value, the oxygen concentration in the deoxygenation chamber 100 is only related to the operating time of the electrochemical deoxygenation module 200.

[0069] In some cases, the deoxygenation chamber 100 is not airtight, and the deoxygenation module 200 transfers the oxygen in the deoxygenation chamber 100 to the outside of the deoxygenation chamber 100 through reduction and precipitation reactions, so that the deoxygenation chamber 100 forms a negative pressure, and the external air will penetrate into the deoxygenation chamber 100. It is necessary to correct the model of the oxygen concentration x in the deoxygenation chamber 100 to consider the influence of air entering. Assuming the correction value is k, the above model is:

[0070] x=21%-k∫22.4*I(t) / (z*96485*V0)dt

[0071] Oxygen accounts for 21% of the volume of air, and the k value can be calculated as:

[0072] Therefore, the model correction for oxygen concentration x is:

[0073] x=21%-0.79∫22.4*I(t) / (z*96485*V0)dt.

[0074] Reference Figure 2 As shown, a deoxygenation method provided in an embodiment of the present application is applied to a deoxygenation device, the deoxygenation device includes a deoxygenation bin 100 and a deoxygenation module 200 for deoxygenating the deoxygenation bin 100; the deoxygenation method includes but is not limited to the following steps:

[0075] Step S100, starting the deoxygenation module 200 with a target driving current, and recording the continuous operation time of the deoxygenation module 200;

[0076] Step S200 , determining the current oxygen concentration in the deoxygenation chamber 100 according to the target driving current, the continuous operation time and the volume of the deoxygenation chamber 100 .

[0077] The deoxygenation bin 100 has a certain volume. When food is placed in the deoxygenation bin 100, the deoxygenation module 200 needs to reduce the oxygen concentration in the deoxygenation bin 100 to a target concentration value, thereby suppressing the breathing intensity of the food and extending the shelf life of the food. Without setting an oxygen concentration sensor, the deoxygenation bin 100 of a specific volume is deoxygenated by relying on the target driving current and continuous operation time of the deoxygenation module 200. It is possible to determine the law of the change of the oxygen concentration in the deoxygenation bin 100 over time, and thus determine when the oxygen concentration in the deoxygenation bin 100 drops to the target concentration value based on the target driving current and continuous operation time. In this way, there is no need to use an oxygen concentration sensor, thereby reducing the material cost of the preservation equipment and avoiding the need for later maintenance of oxygen concentration sensors with a short lifespan.

[0078] Reference Figure 3As shown, in some embodiments, the deoxygenation module 200 is an electrochemical deoxygenation device driven by a constant current; the deoxygenation module 200 is started with a target driving current in the above step S100, including:

[0079] Step S110, determining the constant current driving current value of the deoxygenation module 200;

[0080] In step S120 , the deoxidation module 200 is started with a constant current driving current value.

[0081] By setting the target driving current as a constant current, the electrochemical deoxygenation device can be controlled to operate at a certain deoxygenation rate. Then, by judging the continuous operation time of the deoxygenation module 200, the current oxygen concentration in the deoxygenation chamber 100 can be determined.

[0082] Reference Figure 4 As shown, in some embodiments, the current oxygen concentration in the deoxygenation chamber 100 is determined according to the target driving current, the continuous operation time and the volume of the deoxygenation chamber 100, including:

[0083] Step S210, determining the electrochemical reaction parameters of the deoxygenation module 200, where the electrochemical reaction parameters represent the amount of charge transferred by oxygen molecules during the oxygen reduction or oxygen evolution process of the deoxygenation module 200;

[0084] Step S220 , determining the current oxygen concentration in the deoxygenation chamber 100 according to the electrochemical reaction parameters, the target driving current, the continuous operation time and the volume of the deoxygenation chamber 100 .

[0085] The electrochemical deoxygenation process is usually completed based on two reactions: oxygen reduction reaction and oxygen evolution reaction. The oxygen in the air is converted into ions on the cathode side through the oxygen reduction reaction. The ions migrate to the anode side through the diaphragm and then undergo the oxygen evolution reaction to become oxygen again. In an alkaline electrochemical system, the relevant reaction equation is as follows:

[0086] Cathode (ORR reaction): O2+2H2O+ze - =4OH -

[0087] Anode (OER reaction): 4OH - -ze - =O2+2H2O

[0088] Wherein z is the amount of transferred charge of a single oxygen molecule, which is a constant related only to the reaction path (with a value between 2 and 4), namely the electrochemical reaction parameter mentioned above.

[0089] For oxygen reduction and oxygen evolution reactions, the following relationship exists:

[0090] n O2 =zn e

[0091] n O2 is the amount of oxygen molecules reacting, n e is the amount of electronic material transferred;

[0092] At the same time, there is a quantitative relationship between the amount of electron substances transferred by the reaction and the reaction current, and between the amount of oxygen molecules and the volume of oxygen. Therefore, the relationship between the reaction current and the volume of oxygen transferred per unit time can be given as:

[0093] V=Vm*I / (z*F)

[0094] Among them, n O2 =V / Vm,n e =z*(I / F), V is the volume of oxygen transferred per unit time; I is the reaction current, Vm is the molar volume of the gas, which is 22.4L / mol at 0 degrees Celsius, and F is the Faraday constant, which is 96485C / mol.

[0095] In the above relationship, z, Vm, and F are all constants when the reaction conditions are constant, and the reaction current I is a function related to time, so V is also a function related to time. By integrating the deoxygenation time t, the total volume of oxygen removed can be obtained:

[0096] V1=∫V(t)dt

[0097] Among them, V1 is the total volume of oxygen removed; through this relationship, a quantitative relationship between the reaction current on the battery stack during the operation of the measurement module and the amount of oxygen removed can be established, and then the oxygen concentration in the deoxygenation chamber 100 can be calculated.

[0098] Assuming that the volume of the deoxygenation chamber 100 is V0, and the volume proportion of oxygen in the air is 21%, the oxygen concentration x in the deoxygenation chamber 100 and the total volume of oxygen removed at the current time are related as follows:

[0099] x=21%-V1 / V0

[0100] Therefore, the total relationship between the oxygen concentration in the deoxygenation chamber 100 and the reaction current is:

[0101] x=21%-∫22.4*I(t) / (z*96485*V0)dt

[0102] It can be seen from the above formula that when the deoxygenation volume V0 is constant, the electrochemical deoxygenation module 200 operates under constant current conditions, that is, when I is a certain value, the oxygen concentration in the deoxygenation chamber 100 is only related to the operating time of the electrochemical deoxygenation module 200.

[0103] In some cases, the deoxygenation chamber 100 is not airtight, and the deoxygenation module 200 transfers the oxygen in the deoxygenation chamber 100 to the outside of the deoxygenation chamber 100 through reduction and precipitation reactions, so that the deoxygenation chamber 100 forms a negative pressure, and the external air will penetrate into the deoxygenation chamber 100. It is necessary to correct the model of the oxygen concentration x in the deoxygenation chamber 100 to consider the influence of air entering. Assuming the correction value is k, the above model is:

[0104] x=21%-k∫22.4*I(t) / (z*96485*V0)dt

[0105] Oxygen accounts for 21% of the volume of air, and the k value can be calculated as:

[0106] Therefore, the model correction for oxygen concentration x is:

[0107] x=21%-0.79∫22.4*I(t) / (z*96485*V0)dt.

[0108] Reference Figure 5 As shown, in some embodiments, the deoxygenation method further comprises:

[0109] Step S300: When the continuous operation time reaches a preset first time, the deoxygenation module 200 is shut down.

[0110] Through the above oxygen concentration x model, it can be known that under constant current drive, for a deoxygenation chamber 100 of a specific volume, the gas concentration x is only related to the duration of deoxygenation. Therefore, when the deoxygenation device detects that the deoxygenation module 200 has been running continuously for a preset first duration, the deoxygenation module 200 can be shut down to stop deoxygenation. The preset first duration indicates that the deoxygenation module 200 can adjust the oxygen concentration of the deoxygenation chamber 100 to the target concentration value within this duration, for example, an oxygen concentration between 5% and 10%. Figure 7 As shown in the graph of the actual oxygen concentration variation, it can be seen that the current oxygen concentration determined by deoxygenation in the embodiment of the present application is substantially the same as the detection value of the oxygen concentration sensor in the deoxygenation chamber 100.

[0111] Reference Figure 6 As shown, in some embodiments, the deoxygenation method further comprises:

[0112] Step S410, when it is detected that the deoxygenation chamber 100 is opened, the deoxygenation module 200 is shut down.

[0113] Step S420, after shutting down the deoxygenation module 200, when it is detected that the deoxygenation chamber 100 is opened for a time shorter than the preset second time, it is closed, and the deoxygenation module 200 continues to operate according to the continuous operation time recorded before shutting down the deoxygenation module 200;

[0114] Step S430, after shutting down the deoxygenation module 200, when it is detected that the deoxygenation chamber 100 is opened for a period exceeding a preset second period, it is closed, the continuous operation time is cleared and the deoxygenation module 200 is restarted.

[0115] During the deoxygenation process of the deoxygenation module 200, if it is detected that the deoxygenation chamber 100 is opened, the deoxygenation module 200 can be shut down to save power consumption. If the deoxygenation chamber 100 is opened and then closed, it is determined whether it is necessary to restart the calculation of the continuous operation time according to the length of time the deoxygenation chamber 100 is opened. In the case where the deoxygenation chamber 100 is opened for a short time and less than the preset second time, it is considered that the air outside the deoxygenation chamber 100 does not enter the deoxygenation chamber 100 too much, and it can be considered to continue to control the operation of the deoxygenation module 200 according to the previous continuous operation time after the deoxygenation chamber 100 is closed. In the case where the deoxygenation chamber 100 is opened for a long time and greater than the preset second time, it is considered that too much air outside the deoxygenation chamber 100 enters the deoxygenation chamber 100, causing the oxygen concentration in the deoxygenation chamber 100 to rise too much, and it can be considered to clear the previously recorded continuous operation time after the deoxygenation chamber 100 is closed and restart the deoxygenation module 200 according to the preset first time.

[0116] In a specific embodiment, assuming that the volume V0 of the deoxygenation chamber 100 is 30 liters, the electrochemical reaction parameter z of the deoxygenation module 200 is 2, and the target driving current is 16A, the current oxygen concentration determined by deoxygenation in the embodiment of the present application is substantially the same as the detection value of the oxygen concentration sensor in the deoxygenation chamber 100, such as Figure 7 shown.

[0117] An embodiment of the present application also provides a controller, comprising at least one processor and a memory for communicating with the at least one processor; the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the deoxygenation method as described in the above embodiment.

[0118] The embodiment of the present application also provides a refrigeration and fresh-keeping device, including the deoxygenation device or controller of the above embodiment. The refrigeration and fresh-keeping device can be a refrigerator or a freezer, etc., which cools the deoxygenation bin by circulating the refrigerant, and cooperates with the deoxygenation module to reduce the oxygen concentration in the deoxygenation bin, thereby further extending the shelf life of the food in the deoxygenation bin.

[0119] In some embodiments, the refrigeration and fresh-keeping device further comprises an oxygen concentration display device, which is used to display the current oxygen concentration of the deoxygenation bin. The oxygen concentration display device may be a display screen provided outside the refrigeration and fresh-keeping device, which is used to display the current oxygen concentration of the deoxygenation bin, and the current oxygen concentration is obtained according to the oxygen concentration x calculation model in the above embodiment. Through the oxygen concentration display device, the user can intuitively know the oxygen concentration in the deoxygenation bin.

[0120] 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 embodies 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.

[0121] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present application. These equivalent deformations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A deoxygenation device, characterized in that: include: Deoxygenation bin, used to store food; A deoxygenation module, used for deoxygenating the deoxygenation bin; The controller is used to start the deoxygenation module with a target driving current and record the continuous operation time of the deoxygenation module, and is also used to determine the current oxygen concentration of the deoxygenation bin according to the target driving current, the continuous operation time and the volume of the deoxygenation bin.

2. The deoxidation device according to claim 1, characterized in that: The deoxygenation module is an electrochemical deoxygenation device driven by a constant current, and the target driving current is a constant current.

3. A deoxygenation method, characterized in that: Applicable to a deoxygenation device, the deoxygenation device comprises a deoxygenation bin and a deoxygenation module for deoxygenating the deoxygenation bin; The deoxygenation method comprises: Starting the deoxygenation module with a target driving current, and recording the continuous operation time of the deoxygenation module; The current oxygen concentration in the deoxygenation bin is determined according to the target driving current, the continuous operation time and the volume of the deoxygenation bin.

4. The deoxygenation method according to claim 3, characterized in that: The deoxygenation module is an electrochemical deoxygenation device driven by a constant current; The step of starting the deoxygenation module with a target driving current includes: Determining a constant current driving current value of the deoxygenation module; The deoxidation module is started with the constant current driving current value.

5. The deoxygenation method according to claim 4, characterized in that: The determining the current oxygen concentration in the deoxygenation bin according to the target driving current, the continuous operation time and the volume of the deoxygenation bin comprises: Determining an electrochemical reaction parameter of the deoxygenation module, wherein the electrochemical reaction parameter represents the amount of charge transferred by oxygen molecules during oxygen reduction or oxygen evolution in the deoxygenation module; The current oxygen concentration in the deoxygenation chamber is determined according to the electrochemical reaction parameter, the target driving current, the continuous operation time, and the volume of the deoxygenation chamber.

6. The deoxygenation method according to claim 3, characterized in that: The deoxygenation method further comprises: When the continuous operation time reaches a preset first time, the deoxygenation module is shut down.

7. The deoxygenation method according to claim 3, characterized in that: The deoxygenation method further comprises: When it is detected that the deoxygenation bin is opened, the deoxygenation module is shut down.

8. The deoxygenation method according to claim 7, characterized in that: After shutting down the deoxygenation module, the deoxygenation method further comprises: When it is detected that the deoxygenation chamber is opened for a time shorter than a preset second time, it is closed, and the deoxygenation module continues to be operated according to the continuous operation time recorded before the deoxygenation module is shut down; When it is detected that the deoxygenation chamber is opened for a period exceeding a preset second period, it is closed, the continuous operation time is cleared, and the deoxygenation module is restarted.

9. A controller, characterized in that comprising at least one processor and a memory for communicatively connecting to the at least one processor; The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the deoxygenation method according to any one of claims 3 to 8.

10. Refrigeration and fresh-keeping equipment, characterized in that: Includes the deoxygenation device according to claim 1 or 2 or includes the controller according to claim 9.

11. The refrigeration and fresh-keeping equipment according to claim 10, characterized in that: The refrigeration and fresh-keeping equipment also includes an oxygen concentration display device, which is used to display the current oxygen concentration of the deoxygenation bin.

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