CN116222132A

CN116222132A - Electrolytic deoxidizing system, control method thereof and refrigerator

Info

Publication number: CN116222132A
Application number: CN202111467794.9A
Authority: CN
Inventors: 黄璐璐; 费斌; 苗建林
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2023-06-06
Also published as: WO2023098388A1

Abstract

The present invention provides an electrolytic oxygen removing system having an electrolytic oxygen removing device for consuming oxygen through an electrochemical reaction under the action of an electrolytic voltage, a control method thereof, and a refrigerator, and the control method includes: obtaining the consumption of electrolyte of an electrolytic deoxygenation device; calculating the working time of the electrolytic deoxidation device according to the consumption of the electrolyte; judging whether the working time length reaches a preset time length threshold value or not; if yes, a prompt signal is output to prompt a user to replace the working element of the electrolytic oxygen removing device. Based on the method, the invention provides a state monitoring means of the electrolytic oxygen removing device, and the control logic is simple and ingenious, thereby being beneficial to reducing the state monitoring difficulty.

Description

Electrolytic deoxidizing system, control method thereof and refrigerator

Technical Field

The invention relates to the field of preservation, in particular to an electrolytic deoxidization system, a control method thereof and a refrigerator.

Background

The electrolytic deoxidizing device takes oxygen as a reactant to carry out electrochemical reaction, thereby playing the role of consuming oxygen. Typically, some of the critical components of the electrolytic oxygen removal device have an optimal life cycle.

After the electrolytic deoxidizing device works for a certain time in an accumulated manner, part of key parts begin to age, if the key parts cannot be replaced or the reaction is not stopped in time, the electrochemical reaction can possibly be prevented from being normally carried out, unnecessary electric energy is wasted, and even safety accidents can be caused.

The inventors have recognized that it is necessary to monitor the status of the electrolytic oxygen removal device to determine whether replacement of an aged component is required.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present invention is to overcome at least one technical defect in the prior art and to provide an electrolytic oxygen removing system, a control method thereof and a refrigerator.

A further object of the present invention is to provide a condition monitoring means for an electrolytic oxygen removing device, which reduces the difficulty of condition monitoring.

It is another further object of the present invention to improve the condition monitoring accuracy of electrolytic oxygen removing devices.

It is yet a further object of the present invention to improve the operational reliability of an electrolytic oxygen removal device and to avoid oxygen removal by the electrolytic oxygen removal device in an aged state.

According to an aspect of the present invention, there is provided a control method of an electrolytic oxygen removing system having an electrolytic oxygen removing device for consuming oxygen through an electrochemical reaction under the action of an electrolytic voltage, and comprising: obtaining the consumption of electrolyte of an electrolytic deoxygenation device; calculating the working time of the electrolytic deoxidation device according to the consumption of the electrolyte; judging whether the working time length reaches a preset time length threshold value or not; if yes, a prompt signal is output to prompt a user to replace the working element of the electrolytic oxygen removing device.

Optionally, the electrolytic deoxidation system is provided with a liquid supplementing bin for supplementing electrolyte to the electrolytic deoxidation device; and the step of obtaining the electrolyte consumption of the electrolytic oxygen removing device comprises the following steps: acquiring a liquid level change value of a liquid supplementing bin; and determining the consumption of the electrolyte of the electrolytic deoxygenation device according to the liquid level change value.

Optionally, a liquid level sensor is arranged in the liquid supplementing bin; and the step of obtaining the liquid level change value of the liquid supplementing bin comprises the following steps: acquiring a detection value of a liquid level sensor; and determining a liquid level change value according to the detection value.

Optionally, the volume v=x×y× (1+z) of the fluid make-up tank, where x is the electrolyte consumption rate of the electrolytic oxygen removal device, y is the optimal life cycle of the working element of the electrolytic oxygen removal device, and z is a constant.

Optionally, the step of calculating the operation time of the electrolytic oxygen removing device according to the consumption amount of the electrolyte comprises the following steps: acquiring a corresponding relation between the consumption of the electrolyte and the working time; and determining the working time according to the corresponding relation.

Optionally, the control method further includes, while outputting the prompt signal: and cutting off the electrolysis voltage of the electrolytic deoxygenation device to stop the electrochemical reaction.

Optionally, the electrolytic oxygen removing system is further provided with a reset switch, which is arranged on a power supply loop where the electrolytic oxygen removing device is positioned and is used for switching to an open circuit state under the condition that the electrolytic voltage of the electrolytic oxygen removing device is cut off; and after the electrolytic voltage of the electrolytic oxygen removing device is cut off, the control method further comprises: detecting the state of the reset switch, and switching on the electrolytic voltage of the electrolytic deaerating device when the reset switch is restored to the short-circuit state, so that the electrochemical reaction is continued.

According to another aspect of the present invention, there is also provided an electrolytic oxygen removal system comprising: an electrolytic oxygen removal device for consuming oxygen through an electrochemical reaction under the action of an electrolytic voltage; and a control device having a processor and a memory, the memory storing a machine executable program which, when executed by the processor, is adapted to carry out the control method according to any one of the above.

Optionally, the electrolytic oxygen removal system further comprises: the liquid supplementing bin is provided with a liquid supplying port which is communicated with the liquid supplementing port of the electrolytic deoxidation device so as to supplement electrolyte to the electrolytic deoxidation device; and the liquid level sensor is arranged in the liquid supplementing bin, is in data connection with the control device and is used for detecting the liquid level change value in the liquid supplementing bin.

According to yet another aspect of the present invention there is also provided a refrigerator comprising an electrolytic oxygen removal system as defined in any one of the preceding claims, the electrolytic oxygen removal device being in gas flow communication with the storage space of the refrigerator for consuming oxygen of the storage space by an electrochemical reaction.

According to the electrolytic oxygen removing system, the control method and the refrigerator, the electrolytic oxygen removing system can determine the working time of the electrolytic oxygen removing device according to the consumption of electrolyte of the electrolytic oxygen removing device and determine whether to prompt replacement of the working element of the electrolytic oxygen removing device according to the working time, so that the control method of the electrolytic oxygen removing device provides a state monitoring means of the electrolytic oxygen removing device, has simple and ingenious control logic, and is beneficial to reducing the state monitoring difficulty.

Further, the electrolytic oxygen removing system, the control method thereof and the refrigerator can accurately reflect the working time of the electrolytic oxygen removing device because the consumption of the electrolyte of the electrolytic oxygen removing device, so the scheme of the invention can indirectly and accurately determine the time of the actual electrochemical reaction of the electrolytic oxygen removing device, and has obviously improved state monitoring precision compared with the scheme of judging whether the aging state is reached according to the accumulated installation time of the electrolytic oxygen removing device.

Furthermore, the reset switch of the electrolytic oxygen removing system can be switched to the open-circuit state under the condition that the electrolytic oxygen removing device is powered off, and at the moment, even if a user manually closes a switching element of a power supply loop where the electrolytic oxygen removing device is positioned, the power supply loop where the electrolytic oxygen removing device is positioned is still open-circuit, so that the scheme of the invention can avoid the electrolytic oxygen removing device from deoxidizing in an aging state, and is beneficial to improving the operation reliability of the electrolytic oxygen removing device.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic diagram of a control method of an electrolytic oxygen removal system according to one embodiment of the present invention;

FIG. 2 is a schematic block diagram of an electrolytic oxygen removal system according to one embodiment of the present invention;

FIG. 3 is a schematic block diagram of an electrolytic oxygen removal system according to one embodiment of the present invention;

FIG. 4 is a control flow diagram of an electrolytic oxygen removal system according to one embodiment of the present invention;

FIG. 5 is a control flow diagram of an electrolytic oxygen removal system according to another embodiment of the present invention;

fig. 6 is a schematic structural view of a refrigerator according to an embodiment of the present invention;

FIG. 7 is a schematic block diagram of a liquid level switch of an electrolytic oxygen removal system according to one embodiment of the present invention;

FIG. 8 is a schematic block diagram of a filtration mechanism of an electrolytic oxygen removal system according to one embodiment of the present invention;

FIG. 9 is a schematic exploded view of a filtration mechanism of the electrolytic oxygen removal system shown in FIG. 8;

FIG. 10 is a schematic block diagram of a fluid replacement cartridge and filtration mechanism of an electrolytic oxygen removal system according to one embodiment of the invention;

FIG. 11 is a schematic perspective view of a fluid replacement cartridge and filter mechanism of the electrolytic oxygen removal system shown in FIG. 10;

FIG. 12 is a schematic illustration of a filtration recovery process of the fluid replacement cartridge and filtration mechanism of the electrolytic oxygen removal system shown in FIG. 10;

fig. 13 is a schematic structural view of a second cartridge cover of the fluid replacement cartridge of the electrolytic oxygen removal system shown in fig. 10.

Detailed Description

Fig. 1 is a schematic diagram of a control method of an electrolytic oxygen removal system 2 according to one embodiment of the present invention. The electrolytic oxygen removal system 2 has an electrolytic oxygen removal device 100 for consuming oxygen through an electrochemical reaction under the action of an electrolytic voltage. The electrolytic oxygen removing device 100 contains a electrolyte. The electrochemical elements of the electrolytic oxygen removal device 100 are immersed in the electrolyte, thereby performing an electrochemical reaction and consuming the electrolyte.

The control method of the electrolytic oxygen removal system 2 may generally include the steps of:

step S102, the electrolyte consumption amount of the electrolytic oxygen removing apparatus 100 is acquired. The electrolyte consumption amount refers to the amount of electrolyte consumed when the electrolytic oxygen removing device 100 performs an electrochemical reaction. The electrolyte consumption of this embodiment may be a volume value in liters (L). In some embodiments, electrolyte consumption may also be a mass value in kilograms (kg).

Step S104, working time of the electrolytic oxygen removing device 100 is calculated according to the consumption amount of the electrolyte. The operation time of the electrolytic oxygen removing device 100 refers to the accumulated reaction time of the electrochemical reaction of the electrolytic oxygen removing device 100.

Step S106, judging whether the working time length reaches a preset time length threshold value. Wherein the time duration threshold is used to measure the lifetime of the electrolytic oxygen removal device 100. The time period threshold may be set based on an optimal use period of a particular critical component of the electrolytic oxygen removal device 100 (e.g., the cathode plate described below). For example, the duration threshold may be equal to the optimal usage period, or the difference from the optimal usage period is within a preset range.

Step S108, if yes, a prompt signal is outputted to prompt the user to replace the working element of the electrolytic oxygen removing device 100, such as the cathode plate described below. For example, the electrolytic oxygen removing system 2 may be further provided with a buzzer, or a warning lamp, and the output of the warning signal may be completed by controlling the buzzer to emit warning sound, or controlling the warning lamp to emit warning light. The inventors have recognized that the cathode plate is prone to aging, and thus, the replacement of the working elements of the electrolytic oxygen removal device 100 referred to in this embodiment may refer to replacement of the cathode plate. In some embodiments, the time period threshold may also be determined according to an optimal usage period of other working elements of the electrolytic oxygen removing device 100, so as to determine whether to output a prompting signal, which is not limited herein.

With the method, the electrolytic oxygen removing system 2 can determine the working time of the electrolytic oxygen removing device 100 according to the consumption of the electrolyte of the electrolytic oxygen removing device 100, and determine whether to prompt replacement of the working element of the electrolytic oxygen removing device 100 according to the working time, so the embodiment provides a state monitoring means of the electrolytic oxygen removing device 100, has simple and smart control logic, and is beneficial to reducing the state monitoring difficulty.

Because the electrolyte consumption of the electrolytic oxygen removing device 100 can accurately reflect the working time of the electrolytic oxygen removing device 100, the solution of this embodiment can indirectly and accurately determine the time of the electrochemical reaction actually occurring in the electrolytic oxygen removing device 100, and has significantly improved state monitoring accuracy compared with the solution of determining whether the aging state is reached according to the accumulated installation time of the electrolytic oxygen removing device 100.

Fig. 2 is a schematic block diagram of an electrolytic oxygen removal system 2 according to one embodiment of the present invention. In addition to the electrolytic oxygen removal device 100, the electrolytic oxygen removal system 2 may further comprise a control device 800 having a processor 810 and a memory 820, the memory 820 storing a machine executable program 821 for implementing a control method according to any one of the following when the machine executable program 821 is executed by the processor 810.

The control device 800 has an integrated power supply for the electrolytic oxygen removing device 100. The power supply and the electrolytic oxygen removing device 100 are connected into a power supply loop through the power supply line 700, so that the power supply supplies electrolytic voltage to the electrolytic oxygen removing device 100 by means of the power supply loop. By controlling the on-off state of the power supply line 700, the electrolytic voltage of the electrolytic oxygen removing device 100 can be cut off or restored.

The control device 800 may be a master control chip. In which a machine executable program 821 is stored in the memory 820, which when executed by the processor 810 is used to implement the control method of the electrolytic oxygen removal system 2 of any of the following embodiments. The processor 810 may be a Central Processing Unit (CPU), or a digital processing unit (DSP), or the like. The memory 820 is used for storing programs executed by the processor 810. Memory 820 may be any medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. Memory 820 may also be a combination of various memories. Since the machine executable program 821 realizes each process of the method embodiments described below when executed by the processor 810 and achieves the same technical effects, the description thereof is omitted for avoiding repetition.

Fig. 3 is a schematic block diagram of the electrolytic oxygen removal system 2 according to one embodiment of the present invention. The electrolytic oxygen removal system 2 of the present embodiment may further include a fluid replenishment cartridge 200 for replenishing the electrolytic oxygen removal device 100 with electrolyte. The electrolyte is understood broadly herein to mean both the electrolyte within the electrolytic oxygen removal device 100 and certain components of the electrolyte that are actually consumed during the electrochemical reaction, such as water.

For example, the electrolytic oxygen removing device 100 has an anode plate and a cathode plate as electrochemical elements. Oxygen in the air can undergo a reduction reaction at the cathode plate, namely: o (O) ₂ +2H ₂ O+4e ^- →4OH ^- . OH generated by cathode plate ^- An oxidation reaction may occur at the anode plate and oxygen may be generated, namely: 4OH ^- →O ₂ +2H ₂ O+4e ^- . Only water is consumed throughout the electrochemical reaction process. As the electrochemical reaction proceeds, the moisture in the original electrolyte in the electrolytic oxygen removing device 100 is continuously reduced. Internal shape of fluid replacement cartridge 200In this embodiment, the liquid storage space 210 may directly hold water therein to supplement the electrolytic oxygen removing device 100 with the reactant.

The electrolytic oxygen removal system 2 of this embodiment integrates oxygen removal function and fluid replacement function simultaneously, can utilize self fluid replacement storehouse 200 to mend liquid to electrolytic oxygen removal device 100, is favorable to reducing the fluid replacement degree of difficulty of electrolytic oxygen removal device 100, and electrolytic oxygen removal device 100's fluid replacement process is safer, effective, timely, intelligent, can further guarantee electrolytic oxygen removal device 100's deoxidization effect.

The electrolytic deoxidation device 100 and the fluid replacement bin 200 are organically combined to form the electrolytic deoxidation system 2, so that the problems of difficult fluid replacement, high safety risk, waste gas pollution, electrolyte loss and the like in the deoxidation process can be solved, continuous deoxidation process can be guaranteed to a certain extent, promotion and application of the electrolytic deoxidation device 100 in the field of refrigerators 1 are facilitated, and the fresh-keeping performance of the refrigerators 1 is improved.

The step S102 includes: the liquid level change value of the liquid supplementing bin 200 is obtained, and the electrolyte consumption of the electrolytic oxygen removing device 100 is determined according to the liquid level change value. Since the fluid replacement bin 200 supplements fluid to the electrolytic oxygen removing device 100, the fluid level of the electrolytic oxygen removing device 100 can be in a stable value, and the fluid level change value of the fluid replacement bin 200 directly reflects the consumption of the electrolyte of the electrolytic oxygen removing device 100.

In some alternative embodiments, the electrolytic oxygen removing device 100 may further include a reaction vessel (for example, may have a rectangular parallelepiped shape), and the anode plate and the cathode plate are respectively disposed in the reaction vessel or communicate with an inner space of the reaction vessel so as to be immersed in the electrolyte. The reaction vessel is provided with a fluid replacement port 116 for communicating with the fluid replacement cartridge 200 to allow fluid from the fluid replacement cartridge 200 to flow into the reaction vessel. The fluid supplying bin 200 is provided with a fluid supplying port 262 for communicating with the fluid supplying port 116. That is, the liquid supply port 262 communicates with the liquid replenishment port 116 of the electrolytic oxygen removing device 100 to replenish the electrolytic oxygen removing device 100 with the electrolytic liquid. The infusion tube 300 is connected between the fluid supply port 262 and the fluid refill port 116 to form an infusion path.

The electrolytic oxygen removal system 2 may further include a liquid level switch 500 disposed within the reaction vessel and having a switch body 520 for moving according to the liquid level within the reaction vessel to open and close the make-up port 116 to allow or prevent liquid within the make-up tank 200 from flowing through the liquid supply port 262 and the make-up port 116 into the reaction vessel. That is, the liquid level switch 500 is used to control the opening and closing of the liquid replenishing port 116. That is, the liquid level switch 500 serves as a shutter of the infusion path, and functions to open and close the infusion path. The switch body 520 of the liquid level switch 500 moves according to the liquid level of the reaction vessel, so as to close or open the liquid supplementing port 116, and the opening and closing process of the liquid supplementing port 116 is not required to be controlled electrically.

For example, the fluid replacement port 116 may be provided on the top cover of the reaction vessel. The fluid supply port 262 is higher than the fluid refill port 116. The switch body 520 is movably disposed below the liquid replenishing port 116, and closes the liquid replenishing port 116 by rising to be pressed against the lower peripheral edge of the liquid replenishing port 116 in the case where the liquid level in the reaction vessel increases, and opens the liquid replenishing port 116 by falling to be deviated from the lower peripheral edge of the liquid replenishing port 116 in the case where the liquid level in the reaction vessel decreases.

That is, the switch body 520 may rise and be blocked at the lower periphery of the fluid-filling port 116 under the condition that the fluid level in the reaction vessel rises so as to close the fluid-filling port 116, so that the fluid in the fluid-filling chamber cannot pass through the fluid-filling port 116, and may also fall under the condition that the fluid level in the reaction vessel decreases so as to deviate from and open the fluid-filling port 116, so that the fluid in the fluid-filling chamber can flow into the reaction vessel by means of self gravity, thereby realizing the fluid level control in the reaction vessel and making it stable.

By using the method, the electrolyte consumption of the electrolytic oxygen removing device 100 is indirectly determined according to the liquid level change value of the liquid supplementing bin 200, so that the accuracy of the determination process can be ensured, the direct determination of the liquid level change value in the reaction container can be avoided, and the method is safe and reliable.

In some alternative embodiments, a fluid level sensor 900 is disposed within the fluid replacement cartridge 200. And the step of obtaining the liquid level change value of the liquid replenishing bin 200 includes: a detection value of the liquid level sensor 900 is acquired, and a liquid level change value is determined from the detection value. The liquid level sensor 900 is in data connection with the control device 800, and is used for detecting a liquid level change value in the liquid supplementing bin 200 and sending the liquid level change value to the control device 800.

Since the liquid contained in the liquid supplementing bin 200 in this embodiment is water and is not corrosive, the liquid level sensor 900 is disposed in the liquid supplementing bin 200 to indirectly detect the consumption of the electrolyte of the electrolytic oxygen removing device 100, so that the accuracy of the detection result can be prevented from being affected by corrosion of acid and alkali by the liquid level sensor 900 or the service life can be shortened. In addition, the liquid level sensor 900 does not need to be subjected to acid and alkali resistance treatment, so that the manufacturing cost of the whole system can be reduced. In some alternative embodiments, a lower concentration of electrolyte may be contained in the reservoir space to compensate for electrolyte losses generated during the venting process of the electrolytic oxygen depletion device 100. The concentration of the electrolyte is low and therefore less corrosive or negligible.

The fluid level sensor 900 may refer to any one of a static pressure fluid level gauge, a fluid level transmitter, and a water level sensor, and is a pressure sensor for measuring fluid level.

In some alternative embodiments, the step S104 includes: and obtaining the corresponding relation between the consumption of the electrolyte and the working time, and determining the working time according to the corresponding relation. For example, the correspondence between the electrolyte consumption amount and the operation period is determined according to the electrolyte consumption rate. The consumption of the electrolyte is in a proportional relation with the working time, and the ratio of the consumption of the electrolyte to the working time is the consumption rate of the electrolyte. The electrolyte consumption rate may be pre-calculated and set by an engineer. The level sensor 900 may detect the electrolyte consumption amount once every preset time interval.

By using the method, the working time of the electrolytic oxygen removing device 100 can be continuously monitored in the use process of the electrolytic oxygen removing device 100, which is beneficial to improving the reliability of the monitoring process so as to be convenient for finding the state aging problem of the electrolytic oxygen removing device 100 in time.

In some alternative embodiments, the volume of the fluid replacement cartridge 200 has a preset fixed value. For example, the volume v=x×y× (1+z) of the fluid replacement tank 200, where x is the electrolyte consumption rate of the electrolytic oxygen removal device 100 in L/h (liters/hour), y is the optimal life cycle of the working elements of the electrolytic oxygen removal device 100 in h (hours), and z is a constant. The liquid level sensor 900 of this embodiment may be disposed at the bottom of the fluid replacement cartridge 200. When the liquid level in the liquid supplementing bin 200 drops to a preset warning line position, the liquid level sensor 900 sends a trigger signal and transmits the trigger signal to the control device 800 of the electrolytic oxygen removing system 2, and at this time, the control device 800 determines whether the working time of the electrolytic oxygen removing device 100 reaches a time threshold according to the trigger signal. The mounting location and the warning line of the level sensor 900 may be set up at a height Yu Buye above the supply port 262 of the cartridge 200, with the dashed lines in fig. 3 showing the mounting height and the warning line of the level sensor 900. In some embodiments, z is a percentage, e.g., may be any value in the range of 1% to 10%, giving a margin z that characterizes the partial space at the top and bottom of the fluid replacement cartridge 200.

By using the method, the volume of the fluid replacement bin 200 is designed in advance, after water is injected according to the volume of the fluid replacement bin 200, the liquid level sensor 900 only needs to send a trigger signal to the control device 800 once when the liquid level of the fluid replacement bin 200 is lowered to the warning line position, so that the working time length reaching the time length threshold can be determined, and when the liquid level of the fluid replacement bin 200 is not lowered to the warning line position, the liquid level does not need to be sent, so that the data processing process can be simplified, and the data processing process is simple, convenient and effective.

Before the electrolytic oxygen removing system 2 is put into use, water is injected into the liquid supplementing bin 200, after the water is injected to a designated position, the water in the liquid supplementing bin 200 is continuously consumed along with the continuous progress of electrochemical reaction, and when the liquid level in the liquid supplementing bin 200 is reduced to a warning line, the use time of the key components of the electrolytic oxygen removing device 100 reaches the optimal use period. The designated location may refer to the highest level of the fluid replacement cartridge 200. The volume between the designated position and the guard line position is determined based on the electrolyte consumption of the electrolytic oxygen removal device 100 during the optimal use period. While prompting replacement of critical components, this also means that the fluid replacement cartridge 200 needs to be refilled, which is two-way.

In some alternative embodiments, the control method further includes, while outputting the prompt signal: the electrolytic voltage of the electrolytic oxygen removing device 100 is cut off to stop the electrochemical reaction. Cutting off the electrolytic voltage of the electrolytic oxygen removing device 100 means cutting off the circuit between the electrolytic oxygen removing device 100 and its power supply. By cutting off the power supply circuit in which the electrolytic oxygen removing device 100 is located, the electrolytic voltage of the electrolytic oxygen removing device 100 can be cut off. For example, a switching element may be provided in the power supply circuit, and the electrolytic voltage of the electrolytic oxygen removing device 100 may be turned off or on by controlling the switching element to be opened or closed.

By automatically stopping the electrochemical reaction of the electrolytic oxygen removing device 100 while sending the prompt signal, power consumption or safety accidents caused by aging of components can be avoided, and the reliability of system operation can be improved.

In some further embodiments, the electrolytic oxygen removal system 2 further has a reset switch disposed on the power supply circuit in which the electrolytic oxygen removal device 100 is located, and is configured to switch to an off state in the event that the electrolytic voltage of the electrolytic oxygen removal device 100 is turned off. For example, a reset switch may be provided in the power supply loop in series with the electrolytic oxygen removal device 100. When the reset switch is in the off state, the power supply circuit is in the off state even if the switching element is closed, and the electrolytic oxygen removing device 100 cannot be powered on and started.

The reset switch may be provided in the control device 800 and may be operated only by a professional engineer to adjust the state of the reset switch to a short-circuit state. For example, after the engineer completes replacement and inspection of the above-described critical components and refills the fluid replacement tank 200, the engineer may press the reset switch to adjust the reset switch to a short-circuit state. By such arrangement, the electrolytic oxygen removing device 100 can be prevented from being electrified and started by the user manually switching on the electrolytic voltage without replacing the components, thereby avoiding the occurrence of electric energy waste or safety accidents.

After switching off the electrolytic voltage of the electrolytic oxygen removing device 100, the control method further includes: the state of the reset switch is detected, and when the reset switch is restored to the short-circuit state, the electrolytic voltage of the electrolytic oxygen removing device 100 is turned on, so that the electrochemical reaction is continued. For example, when the reset switch is restored to the short-circuit state and the storage space 101 of the refrigerator 1 has a deoxidizing requirement, the switching element may be closed to turn on the electrolysis voltage of the electrolytic deoxidizing device 100, so that the electrolytic deoxidizing device 100 consumes oxygen of the storage space 101 using an electrochemical reaction.

In some further embodiments, after determining that the reset switch is restored to the short-circuit state, the control method may further include: the liquid level of the liquid replenishing bin 200 is detected to determine whether water has been injected into the liquid replenishing bin 200 to a designated position, and if so, a step of switching on the electrolytic voltage of the electrolytic oxygen removing device 100 is performed, which can ensure smooth progress of the electrochemical reaction. In the step of detecting the liquid level of the liquid replenishing tank 200, the liquid level of the liquid replenishing tank 200 may be determined according to the detection value of the liquid level sensor 900.

Fig. 4 is a control flow diagram of the electrolytic oxygen removal system 2 according to one embodiment of the present invention. The control flow of the electrolytic oxygen removal system 2 may generally include the steps of:

in step S402, a detection value of the liquid level sensor 900 is acquired.

Step S404, determining a liquid level change value according to the detection value.

Step S406, determining the electrolyte consumption of the electrolytic oxygen removing device 100 according to the liquid level change value.

Step S408, a correspondence relationship between the electrolyte consumption amount and the operation duration is obtained.

Step S410, determining the working time according to the corresponding relation.

Step S412, determining whether the working time length reaches a preset time length threshold, if yes, executing step S414, and if not, executing step S402.

Step S414, a prompting signal is output to prompt the user to replace the working element of the electrolytic oxygen removing device 100.

In step S416, the electrolytic voltage of the electrolytic oxygen removing device 100 is cut off to stop the electrochemical reaction.

In step S418, the state of the reset switch is detected.

Step S420, when the reset switch is restored to the short-circuit state, the electrolytic voltage of the electrolytic oxygen removing device 100 is turned on, so that the electrochemical reaction is continued.

Fig. 5 is a control flow diagram of the electrolytic oxygen removal system 2 according to another embodiment of the present invention. The control flow of the electrolytic oxygen removal system 2 of the present embodiment may generally include the steps of:

In step S502, a trigger signal of the liquid level sensor 900 is acquired. Under the condition that the trigger signal is acquired, namely, the fact that the consumption of the electrolyte of the electrolytic oxygen removing device 100 reaches a preset consumption threshold is determined, and the actual working time of the electrolytic oxygen removing device is determined by acquiring the working time of the electrolytic oxygen removing device corresponding to the preset consumption threshold.

Step S504, determining that the working time of the electrolytic oxygen removing device 100 reaches a preset time threshold.

Step S506, a prompt signal is output to prompt a user to replace the working elements of the electrolytic oxygen removing device 100.

Step S508, the electrolytic voltage of the electrolytic oxygen removing device 100 is cut off, and the electrochemical reaction is stopped.

Step S510, detecting a state of the reset switch.

In step S512, when the reset switch is restored to the short-circuit state, the electrolysis voltage of the electrolytic oxygen removing device 100 is turned on, so that the electrochemical reaction is continued.

Fig. 6 is a schematic structural view of a refrigerator 1 according to an embodiment of the present invention.

The refrigerator 1 may generally include an electrolytic oxygen removal system 2 as in any of the above embodiments, the electrolytic oxygen removal device 100 being in gas flow communication with the storage space 101 of the refrigerator 1 for consuming oxygen of the storage space 101 by an electrochemical reaction. The refrigerator 1 may further include a cabinet defining the storage space 101 therein. The electrolytic oxygen removal system 2 may be provided in the cabinet to improve the structural integrity of the refrigerator 1.

In some embodiments, the control device 800 of the electrolytic oxygen removal system 2 may be integrally disposed on the main control board of the refrigerator 1, which is beneficial to simplifying the overall electrical control structure of the refrigerator 1.

Fig. 7 is a schematic block diagram of a liquid level switch 500 of the electrolytic oxygen removal system 2 according to one embodiment of the present invention.

With reference to fig. 7, a specific structure of the liquid level switch 500 will be further described. The liquid level switch 500 further includes a float 510 fixedly connected with the switch body 520 or integrally formed with the switch body 520, and rotatably disposed around a shaft, for floating or sinking in the reaction vessel by rotating around the shaft, so as to drive the switch body 520 to move. That is, the switch body 520 is "driven" by the float 510, and the power required to move the float 510 is determined by the buoyancy it receives within the reaction vessel.

For example, a portion of the float 510 is immersed in a liquid, thereby subjecting the float 510 to buoyancy by the liquid. When the liquid level of the inner space of the reaction vessel changes, the buoyancy force applied to the float 510 also changes, so that the resultant force of the buoyancy force applied to the float 510 and the gravity force changes. For example, when the liquid level in the reaction vessel decreases, the buoyancy force exerted by the float 510 decreases, and if the resultant force of the buoyancy force exerted by the float 510 and the gravity force is downward, the float 510 is caused to move downward. Conversely, this will cause the float 510 to move upward.

The float 510 of this embodiment does not make lifting movement along a straight line, but rises or falls in a mode of rotating around a shaft, so that the design is that only the float 510 and a certain fixed shaft are required to be connected in a pivotable manner, a guide component with higher dimensional accuracy is not required to be installed, and the device has the advantages of exquisite structure, simple assembly process and good device reliability.

Because the float 510 is rotatably arranged around the shaft, the movement track is clear and definite, so that the float 510 and the switch body 520 of the embodiment are easy to move along the clear and definite movement track, thereby improving the reliability of the liquid level switch 500 and reducing or avoiding the problems of sealing inaccuracy and the like caused by free movement of the float 510.

The fluid level switch 500 may further include a rotation shaft 530 and a connection 540.

Wherein the rotation shaft 530 is fixed to the reaction vessel. For example, the rotation shaft 530 may be fixed to the inner space of the reaction vessel and fixedly coupled to the inner wall of the reaction vessel.

In some alternative embodiments, the rotating shaft 530 may also be removably secured to the reaction vessel, which may allow for adjustment of the height of the rotating shaft 530, and thus the level of liquid in the vessel from which the replenishment begins, as desired.

The connection member 540 is fixedly connected with the float 510 or is an integral piece with the float 510, and has a shaft hole formed thereon for the rotation shaft 530 to be inserted therein and rotatably fitted to achieve the rotatable connection. That is, the connection 540 assembles the rotation shaft 530 and the float 510 as one organic whole such that the float 510 can rotate around the rotation shaft 530.

By providing the shaft hole in the connection member 540 and rotatably engaging the rotation shaft 530 with the shaft hole, the float 510 can be rotatably fitted to the rotation shaft 530 around the shaft, and the structure is fine and the process is simple.

The switch body 520 has a rod shape. The connection member 540 is further formed with a mounting opening for inserting a portion of the switch body 520 therein to achieve a fixed assembly. That is, a portion of the switch body 520 is fixedly coupled to the float 510 by being fixedly assembled with the coupling 540. For example, a portion of the switch body 520 may be assembled with the mounting opening of the connector 540 by an interference fit.

The rotation shaft 530 and the switch body 520 are assembled to the connection member 540 fixedly connected to the float 510 or integrally formed with the float 510, respectively, thereby forming the liquid level switch 500, which has a strong structural integrity.

Fig. 8 is a schematic block diagram of a filtering mechanism 400 of the electrolytic oxygen removal system 2 according to one embodiment of the present invention. Fig. 9 is a schematic exploded view of the filtration mechanism 400 of the electrolytic oxygen removal system 2 shown in fig. 8.

In some embodiments, the electrolytic oxygen removal system 2 further includes a filtration mechanism 400 having a housing 420 and a filter portion 440. The inner space 421 of the housing 420 is in communication with the liquid storage space 210, and the filtering portion 440 is disposed in the inner space 421 of the housing 420 and is used to dissolve the specific substance component in the gas from the gas outlet 112 into the inner space 421 of the housing 420, so as to enter the liquid storage space 210 for recycling. That is, the gas discharged from the gas outlet 112 may be filtered by the filtering part 440 to separate out the specific material components and to retain the specific material components in the inner space 421 of the case 420. The case 420 may have a space for containing a liquid therein, and may contain an electrolyte or water containing a specific component, for example. The specific material component in the gas discharged from the reaction vessel is dissolved in the liquid contained in the reaction vessel by dissolving in the inner space 421 of the housing 420.

Since the filtering mechanism 400 can dissolve specific substance components in the gas discharged from the electrolytic oxygen removing device 100 in the inner space 421 of the housing 420, the gas to be discharged is filtered, which is beneficial to reducing the corrosiveness of the gas discharged from the electrolytic oxygen removing device 100 and reducing the adverse effect of the oxygen removing process on the environment.

In addition, since the housing 420 of the filtering mechanism 400 is in communication with the liquid storage space 210, the specific substance components dissolved in the housing 420 can enter the liquid storage space 210, and thus the specific substance components in the gas discharged from the electrolytic oxygen removing device 100 can be recovered and reused, which is advantageous in reducing the resource consumption of the oxygen removing process.

The specific material component is water-soluble. In some alternative embodiments, the liquid composition stored within the housing 420 and within the fluid replacement cartridge 200 may be adjusted according to the physicochemical properties of the particular material composition to be separated.

Fig. 10 is a schematic block diagram of the fluid replacement cartridge 200 and the filtration mechanism 400 of the electrolytic oxygen removal system 2 according to one embodiment of the present invention. Fig. 11 is a schematic perspective view of the fluid replacement cartridge 200 and the filtration mechanism 400 of the electrolytic oxygen removal system 2 shown in fig. 10.

For the communication between the housing 420 and the liquid storage space 210, in some alternative embodiments, the housing 420 is inserted into the liquid storage space 210, and a liquid outlet hole for communicating with the liquid storage space 210 is formed at the bottom of the housing 420, so as to allow the liquid in the housing 420 to flow back into the liquid replenishing bin 200. For example, the fluid replacement cartridge 200 may have a substantially rectangular parallelepiped shape, and the housing 420 may be inserted into the fluid replacement cartridge 200 as an inner sleeve. The examples of shapes for the fluid replacement cartridge 200 and the housing 420 are illustrative only and should be readily expanded by those skilled in the art and are not enumerated here.

The outlet 422 may act as a "window" for mass exchange between the interior space 421 of the housing 420 and the interior space of the fluid replacement cartridge 200 (i.e., the fluid storage space 210). The liquid outlet 422 can keep the inner space 421 of the housing 420 consistent with the liquid level of the inner space of the liquid replenishing bin 200, and can facilitate the liquid in the housing 420 to diffuse into the liquid replenishing bin 200.

Because the casing 420 is disposed in the inner space of the fluid replacement chamber 200 and is communicated with the fluid replacement chamber 200 through the fluid outlet 422 disposed at the bottom of the casing 420, the fluid in the casing 420 can flow downwards through the fluid outlet 422 by gravity and flow back into the fluid replacement chamber 200, which makes the recovery process simple and effective.

The housing 420 is provided with an air inlet 423 for communicating the air outlet 112 with an inner space 421 of the housing 420. The electrolytic oxygen removing system 2 may further include a gas pipe 600 having one end communicating with the exhaust port 112 and the other end communicating with the gas inlet hole 423 for guiding the gas from the exhaust port 112 to the gas inlet hole 423.

The connection structure of the gas transmission pipeline between the gas outlet 112 and the gas inlet 423 can be simplified by connecting the gas transmission pipe 600 to the gas outlet 112 and the gas inlet 423, and flexibility of the assembly process can be improved.

In some alternative embodiments, the filtering part 440 is an air duct inserted into the inner space 421 of the housing 420 from the air inlet hole 423 and extending to a bottom section inside the housing 420 to guide the gas from the air outlet 112 to the bottom section inside the housing 420 so that a specific material component in the gas from the air outlet 112 is dissolved in the inner space 421 of the housing 420 during the rising. The air duct of this embodiment can be the straight tube, and its both ends are the opening to be convenient for let in or outflow gaseous, simple structure possesses better air guide effect.

The gas guide pipe is extended to the bottom section in the shell 420, so that the gas guide pipe can convey gas to the depth of liquid in the shell 420, the flow path of the gas in the shell 420 is prolonged, the gas flowing out of the gas guide pipe can be fully contacted with the liquid in the shell 420 in the rising process, and specific substance components in the gas are dissolved in the shell 420, so that the electrolytic deoxidation system 2 can obtain better filtering purification and recovery effects with a exquisite and simple structure.

In some alternative embodiments, the shape of the airway tube may be transformed into a vertical bent hook-like tube having a straight tube section extending to the bottom section of the housing 420 and a bent tube section bent up from the end of the straight tube section. The end of the curved tube section is slightly higher than the end of the straight tube section for directing the gas flowing therethrough upward. The straight tube section is similar to an umbrella stick and the curved tube section is similar to an umbrella handle attached to the end of the umbrella stick. The bent pipe section is bent from the tail end of the straight pipe section to extend upwards, so that the gas flowing out of the gas guide pipe is guided to flow upwards, and the movement direction of the gas is more definite. The fact that the end of the bend section is slightly higher than the end of the straight tube section means that the end of the bend section is still in the bottom section of the housing 420, which does not significantly shorten the flow path of the gas during dissolution.

The housing 420 is further provided with an air outlet 424 spaced apart from the air inlet 423 at the top of the housing 420 for discharging the air flowing through the air duct and the inner space of the housing 420 and separated from the specific material component. The air outlet 424 is used to exhaust the filtered air to the outside environment, such as air that may be exhausted to the outside environment.

In some embodiments, the inlet aperture 423 and the outlet aperture 424 may be located on the top cover of the housing 420, respectively. The inlet holes 423 and the outlet holes 424 may be circular openings, respectively. The air inlet holes 423 and the air outlet holes 424 of the present embodiment may be tubular through holes, respectively. The air duct and the air intake hole 423 may be one piece. The hole walls of the air inlet holes 423 may extend downward and into the housing in a coherent manner as an air duct. In some embodiments, an outlet conduit may be connected to the outlet port 424 for directing the gas.

In some alternative embodiments, the housing 420 may be integrally formed. In alternative embodiments, the housing 420 may be formed from a plurality of different components. For example, the housing 420 can include a first cartridge body 426 having a top opening and a first cap 428 closing the top opening of the first cartridge body 426. And the air inlet holes 423 and the air outlet holes 424 are located on the first cover 428 at intervals. The first bin 426 may be straight and have a tube diameter greater than the tube diameter of the airway. The top end of the first bin 426 is open and is connected with the first bin cover 428 in a sealing manner. The bottom end of the first bin 426 is closed, and the liquid outlet 422 is formed thereon. The liquid outlet 422 may be at least one.

The air inlet 423, the air duct and the air outlet 424 are covered by the first bin 426 to form a sleeve structure. The bottom of the air duct is higher than the bottom of the first bin 426, so that the air flowing out of the air duct is prevented from escaping the first bin 426.

In some alternative embodiments, the fluid replacement cartridge 200 may be integrally formed, which may facilitate improving the sealing effect of the fluid replacement cartridge 200 and preventing leakage. In alternative embodiments, the fluid replacement cartridge 200 may be formed from a plurality of different components. For example, the fluid replacement cartridge 200 can include a second cartridge body 260 having an open top and a second cap 280 closing the open top of the second cartridge body 260. The second chamber 260 may be in the shape of a rectangular water tank without a cover, and the volume of the second chamber is larger than that of the first chamber 426.

Fig. 12 is a schematic diagram of a filtration recovery process of the fluid replacement cartridge 200 and the filtration mechanism 400 of the electrolytic oxygen removal system 2 shown in fig. 10.

The direction of the arrows in the figure show the direction of the flow of the gas, or the direction of the flow of the liquid. Due to the "gas barrier" restriction of the housing 420, the gas exiting the gas barrier can only rise in the form of bubbles within the interior of the first housing 426 until it reaches the gas outlet aperture 424 of the first cap 428 above the first housing 426 and is exhausted, thereby completing the filtration process. In some alternative embodiments, the installation mode of the screw connection fastening can be changed into an interference fit mode or a sealing connection mode by adopting a sealing ring, so long as the sealing is guaranteed to be watertight and airtight.

When the gas from the exhaust port 112 contains soluble acidic or basic substances, these particular substance components are filtered and retained in the first cartridge body 426 and gradually pass through the outlet holes 422 in the bottom of the first cartridge body 426 to diffuse into the liquid in the second cartridge body 260. The first bin 426 may be used as a fluid supplementing bin, and the liquid in the first bin may be conveyed to the reaction container again in a fluid supplementing mode, so that the reuse is realized.

Fig. 13 is a schematic structural view of a second tank cover 280 of the liquid replenishing tank 200 of the electrolytic oxygen removing system 2 shown in fig. 10. Fig. 13 (a) is a perspective view, fig. 13 (b) is a front view, and fig. 13 (c) is a plan view.

The second cover 280 is provided with a mounting opening 282. The hole wall of the mounting opening 282 extends upwardly to form a hollow cylindrical external threaded interface 288. Since the male screw joint 288 is formed to extend upward from the wall of the mounting opening 282, the upper edge of the male screw joint 288 is higher than the upper surface of the second cap 280 and also higher than the upper edge of the filling slot 286 described below. This may control the maximum level of the priming process below the upper edge of the externally threaded interface 288.

The first deck lid 428 has a closure cap 428a located above the first deck body 426 and an annular female threaded interface 428b extending downwardly from the outer periphery of the closure cap 428 a. Wherein, the closing cover 428a is used for shielding the top opening of the first bin 426. The annular internal threaded interface 428b is threaded with the external threaded interface 288 such that the first cap 428 is removably coupled with the second cap 280. That is, an annular internally threaded interface 428b is used to connect the first cap 428 to the second cap 280.

The first cartridge body 426 extends downwardly from the lower surface of the closure deck 428a and is inserted into the fluid replacement cartridge 200 after passing through the externally threaded interface 288.

The first bin cover 428 and the second bin cover 280 are in threaded connection to seal the mounting opening 282, so that the mounting and fixing process of the filtering mechanism 400 can be simplified, one-step mounting in place is realized, and meanwhile, the first bin body 426 can play a role of an air isolation pipe.

In some alternative embodiments, the second cap 280 may be provided with a filling port 284, the wall of which extends downwardly to form a filling slot 286. Since the filling slot 286 extends downward from the upper surface of the second cap 280 and the male connector 288 extends upward from the upper surface of the second cap 280, the liquid level does not exceed the male connector 288 when liquid is added from the filling port 284 to the second cartridge 260 even if the filling process results in overflow of the second cartridge 260.

A portion of the trough wall of the sump 286 extends obliquely downward such that the bottom of the sump 286 forms a tapered opening. That is, the water adding tank is an inclined through hole with a certain depth, which is convenient for a user to observe the liquid level condition during liquid adding. The tank wall extending obliquely downwards is provided with a liquid level mark to prompt the liquid level in the liquid adding process. For example, the level indicator may be designed as a "top level tick mark" for prompting the user that the liquid is filled.

The liquid supply port 262 is formed in the bottom section of the second bin 260, so that the liquid in the second bin 260 can automatically flow out by gravity, which is beneficial to improving the automation degree of the liquid supply process.

In some alternative embodiments, the edge of the second cap 280 has a protrusion 287 that protrudes outward to provide the force. The user can apply force to the second cover 280 through the actions such as grabbing, so as to realize the process of disassembling and assembling the second cover 280 and the second bin 260.

An elastic sealing ring can be arranged at the periphery of the closing position between the second bin cover 280 and the second bin body 260, so that sealing can be realized conveniently through pressing between the second bin cover 280 and the second bin body 260, and water leakage of the second bin body 260 is prevented.

According to the electrolytic oxygen removing system 2, the control method thereof and the refrigerator 1, the electrolytic oxygen removing system 2 can determine the working time of the electrolytic oxygen removing device 100 according to the electrolyte consumption of the electrolytic oxygen removing device 100 and determine whether to prompt the replacement of the working elements of the electrolytic oxygen removing device 100 according to the working time, so that the invention provides a state monitoring means of the electrolytic oxygen removing device 100, and the control logic is simple and ingenious, thereby being beneficial to reducing the state monitoring difficulty.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A control method of an electrolytic oxygen removal system having an electrolytic oxygen removal device for consuming oxygen through an electrochemical reaction under an electrolytic voltage, and comprising:

obtaining electrolyte consumption of the electrolytic deoxygenation device;

calculating the working time of the electrolytic oxygen removing device according to the consumption of the electrolyte;

judging whether the working time length reaches a preset time length threshold value or not;

if yes, a prompting signal is output to prompt a user to replace the working element of the electrolytic oxygen removing device.

2. The control method according to claim 1, wherein,

the electrolytic deoxidation system is provided with a liquid supplementing bin for supplementing electrolyte to the electrolytic deoxidation device; and is also provided with

The step of obtaining the electrolyte consumption of the electrolytic oxygen removing device comprises the following steps:

acquiring a liquid level change value of a liquid supplementing bin;

and determining the consumption of the electrolyte of the electrolytic oxygen removing device according to the liquid level change value.

3. The control method according to claim 2, wherein,

a liquid level sensor is arranged in the liquid supplementing bin; and is also provided with

The step of obtaining the liquid level change value of the liquid supplementing bin comprises the following steps:

acquiring a detection value of the liquid level sensor;

And determining the liquid level change value according to the detection value.

4. The control method according to claim 2, wherein,

the volume V=x×y× (1+z) of the fluid replacement chamber, wherein x is the electrolyte consumption rate of the electrolytic oxygen removal device, y is the optimal service cycle of the working element of the electrolytic oxygen removal device, and z is a constant.

5. The control method according to claim 1, wherein,

the step of calculating the working time of the electrolytic oxygen removing device according to the electrolyte consumption comprises the following steps:

acquiring a corresponding relation between the electrolyte consumption and the working time;

and determining the working time according to the corresponding relation.

6. The control method according to claim 1, wherein the control method further comprises, while outputting the cue signal:

and cutting off the electrolysis voltage of the electrolytic deoxygenation device to stop the electrochemical reaction.

7. The control method according to claim 6, wherein,

the electrolytic oxygen removing system is also provided with a reset switch which is arranged on a power supply loop where the electrolytic oxygen removing device is positioned and is used for switching to an open circuit state under the condition that the electrolytic voltage of the electrolytic oxygen removing device is cut off; and is also provided with

After switching off the electrolytic voltage of the electrolytic oxygen removing device, the control method further includes:

detecting the state of the reset switch, and switching on the electrolytic voltage of the electrolytic oxygen removing device when the reset switch is restored to a short circuit state, so that the electrochemical reaction is continued.

8. An electrolytic oxygen removal system comprising:

an electrolytic oxygen removal device for consuming oxygen through an electrochemical reaction under the action of an electrolytic voltage; and

control device having a processor and a memory, said memory having stored therein a machine executable program which, when executed by said processor, is adapted to carry out the control method according to any one of claims 1-7.

9. The electrolytic oxygen removal system of claim 8, further comprising:

the liquid supplementing bin is provided with a liquid supplying port which is communicated with the liquid supplementing port of the electrolytic deoxidation device so as to supplement electrolyte to the electrolytic deoxidation device; and

the liquid level sensor is arranged in the liquid supplementing bin and is in data connection with the control device and used for detecting a liquid level change value in the liquid supplementing bin.

10. A refrigerator, comprising:

the electrolytic oxygen removal system of any one of claims 8-9, said electrolytic oxygen removal device in air flow communication with a storage space of said refrigerator for consuming oxygen of said storage space by an electrochemical reaction.