WO2023155668A1

WO2023155668A1 - Refrigerator and electrolytic deoxygenization system thereof

Info

Publication number: WO2023155668A1
Application number: PCT/CN2023/073576
Authority: WO
Inventors: 黄璐璐; 费斌; 苗建林
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2022-02-16
Filing date: 2023-01-28
Publication date: 2023-08-24
Also published as: CN217844465U

Abstract

A refrigerator and an electrolytic deoxygenization system thereof. The electrolytic deoxygenization system comprises a reaction apparatus, a gas discharge/liquid return apparatus, and a filter apparatus; the reaction apparatus is provided with an oxygen discharge port; the reaction apparatus is configured to separate oxygen in air flowing through the reaction apparatus by means of an electrolysis reaction, and discharge oxygen from the oxygen discharge port; a gas discharge/liquid return cavity is provided in the gas discharge/liquid return apparatus; the gas discharge/liquid return cavity is communicated with the oxygen discharge port; the gas discharge/liquid return cavity is further communicated with an external environment, so as to discharge oxygen in the gas discharge/liquid return cavity to the external environment; the filter apparatus is provided on an airflow path of the gas discharge/liquid return cavity leading to the external environment; and the filter apparatus is configured to allow oxygen to be discharged and filter an electrolyte carried in oxygen in the gas discharge/liquid return cavity. The electrolytic deoxygenization system can recycle the electrolyte, and not only reduces the quality of air, but also improves the utilization efficiency of resources.

Description

Refrigerator and its electrolytic deoxygenation system

technical field

The invention relates to fresh-keeping equipment, in particular to a refrigerator and an electrolytic deoxygenation system thereof.

Background technique

For the electrochemical reaction device used to reduce the oxygen inside the refrigerator through electrochemical reaction, the process of electrochemical reaction requires the participation of electrolyte, and the reaction process will generate gas, which needs to be discharged to the external environment.

During the reaction process, due to the generation of a large amount of heat, the electrolyte will be heated and evaporated, which may cause a small amount of electrolyte vapor to be carried in the gas discharged from the reaction vessel. Most electrolytes are acidic or alkaline solutions, which are corrosive. If the gas generated by the reaction device is directly discharged to the air without treatment, it may cause air pollution and endanger life and health.

Contents of the invention

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

A further object of the present invention is to recycle the electrolyte, reduce air quality pollution, and improve resource utilization efficiency.

Another further object of the present invention is to increase the oxygen removal efficiency.

In particular, the present invention provides an electrolytic deoxygenation system, comprising: a reaction device with an oxygen outlet on it, the reaction device is configured to separate the oxygen in the air flowing through it through an electrolytic reaction, and discharge it from the oxygen outlet ;The exhaust liquid return device has an exhaust liquid return chamber inside, the exhaust liquid return chamber is connected with the oxygen exhaust port, and the exhaust liquid return chamber is also connected with the external environment to return the exhaust gas to the oxygen in the liquid chamber Exhausting to the external environment; and a filter device, arranged on the airflow path from the exhaust return chamber to the external environment, the filter device is configured to allow oxygen to be discharged, and filter the electrolyte carried in the oxygen in the exhaust return chamber.

Optionally, the exhaust gas return device is provided with a gas outlet; the electrolysis oxygen removal system further includes: a first gas delivery pipe, the first end of which is connected to the gas outlet, and the second end of which is exposed to the external environment.

Optionally, the filtering device has a membrane structure; the membrane structure is laid on the first air delivery pipe.

Optionally, the membrane structure has an air inlet surface and an air outlet surface; the inlet surface is arranged obliquely relative to the horizontal plane.

Optionally, the filter device is a molecular sieve membrane.

Optionally, the exhaust gas return device is located above the reaction device.

Optionally, the bottom of the exhaust liquid return device is provided with a first liquid return port, and the top of the reaction device is provided with a second liquid return port; The liquid return port and the second liquid return port are used to guide the electrolyte collected in the exhaust return chamber to the reaction device.

Optionally, an air inlet is provided at the bottom of the exhaust gas return device; the electrolysis oxygen removal system also includes: a second gas delivery pipe, the first end of which is connected to the oxygen exhaust port and extends upward through the air inlet, so that Its second end is inside the exhaust liquid return cavity.

Optionally, the exhaust liquid return device includes a cylinder body and a cylinder cover, the cylinder body is opened upwards, and the cylinder cover is detachably arranged at the opening of the cylinder body to jointly define an exhaust liquid return cavity with the cylinder body; the air inlet Formed on the bottom wall of the cylinder, the outer side of the bottom wall of the cylinder is formed with a pipeline joint around the air inlet; the second gas delivery pipe also includes: an outer pipe section, located outside the cylinder, and the first end of the outer pipe section serves as the first The first end of the second gas delivery pipe is connected to the oxygen outlet, the second end of the outer pipe section is connected to the pipeline joint; the inner pipe section is located inside the cylinder, and the first end of the inner pipe section is formed on the inner bottom wall of the cylinder , and extend upwards, the second end of the inner pipe section serves as the second end of the second air delivery pipe.

In particular, the present invention provides a refrigerator, including any one of the above-mentioned electrolytic deoxygenation systems.

In the electrolytic deoxygenation system of the present invention, since the filter device is arranged on the airflow path from the exhaust gas return cavity to the external environment, the filter device can allow oxygen to be discharged, and filter the electrolyte carried in the oxygen in the exhaust gas return cavity, Therefore, it is possible to prevent the electrolyte vapor from being discharged into the external environment together with the oxygen, thereby ensuring the health of users. In addition, the electrolyte filtered in the exhaust return chamber can be discharged back into the reaction device for use in electrolytic reactions, which improves resource utilization efficiency.

Furthermore, in the electrolytic deoxygenation system of the present invention, the air intake surface of the filter device is set to be inclined relative to the horizontal plane, and the liquid "water droplets" that condense when encountering the air intake surface will move along the surface under the surface tension of the air intake surface. The flow in an oblique direction can divert the liquid "drops" in time, so that the liquid "drops" will not block the filter device and improve the oxygen discharge efficiency.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

FIG. 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

Fig. 2 is a schematic block diagram of a refrigerator according to an embodiment of the present invention;

3 is a schematic diagram of an electrolytic deoxygenation system in a refrigerator according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of an electrolytic deoxygenation system in a refrigerator according to another embodiment of the present invention, which shows that the filter device is arranged inside the exhaust liquid return device;

Fig. 5 is a schematic diagram of the installation relationship between the first gas delivery pipe and the filter device in the electrolytic deoxygenation system according to an embodiment of the present invention;

6 is a schematic diagram of an exhaust gas return device in an electrolysis oxygen removal system according to an embodiment of the present invention;

Fig. 7 is a schematic diagram showing the relationship between the cylinder body and the second air delivery pipe in the electrolysis oxygen removal system according to an embodiment of the present invention.

Detailed ways

In the description of this embodiment, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", The orientations or positions indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "depth" etc. are based on the orientation in normal use as a reference, and refer to the accompanying drawings The shown orientation or positional relationship can be determined, for example, "front" indicating the orientation refers to the side facing the user. This is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Referring to Fig. 1, Fig. 1 is a schematic diagram of a refrigerator 1 according to an embodiment of the present invention. The present invention firstly provides a refrigerator 1 , which may generally include a box body 10 and a door body 20 .

The box body 10 may include an outer shell and a plurality of liners, and the outer shell is located on the outermost side of the overall refrigerator 1 to protect the entire refrigerator 1 . A plurality of inner tanks are wrapped by the outer shell, and the space between them and the outer shell is filled with thermal insulation material (forming a foam layer), so as to reduce the outward heat dissipation of the inner tanks. Each liner can define a storage compartment that is open forward, and the storage compartment can be configured as a refrigerator, freezer, temperature-changing room, etc. The number and functions of the specific storage compartments can be based on prior needs to configure.

The door body 20 is movably arranged in front of the inner tank to open and close the storage compartment of the inner tank. For example, the door body 20 can be set on one side of the front of the box body 10 in a hinged manner, and can be opened and closed by pivoting. Storage room.

The refrigerator 1 can also include a drawer assembly 30, and the drawer assembly 30 can also include a drawer body, which is retractably arranged in the box body 10, so that users can take items.

Referring to Fig. 2, Fig. 2 is a schematic block diagram of a refrigerator 1 according to an embodiment of the present invention. In a In some embodiments, the refrigerator 1 may also include an electrolytic deoxygenation system 40, which may be installed in the inner tank or the drawer assembly 30, to separate the oxygen in the air flowing through it through electrolytic reaction, and The nitrogen gas is left in the storage compartment of the liner or in the drawer body to realize fresh-keeping storage of food.

Specifically, the electrolytic deoxygenation system 40 can be arranged on the rear wall, side wall, top wall, bottom wall, etc. wall etc. In a word, those skilled in the art can set up the electrolytic deoxygenation system 40 according to the actual situation after knowing the technical solution of this embodiment, which will not be listed here.

Referring to FIG. 2 and FIG. 3 , FIG. 3 is a schematic diagram of an electrolytic deoxygenation system 40 in the refrigerator 1 according to an embodiment of the present invention. Further, the electrolytic deoxygenation system 40 may also include a reaction device 410 for separating oxygen in the air passing therethrough through an electrolytic reaction, so as to reduce oxygen.

Specifically, the reaction device 410 may include a reaction vessel 411, inside which forms a place for performing electrochemical reactions. The reaction container 411 may be provided with electrochemical reaction elements (anode plate, cathode plate, etc.), and electrolyte solution, such as sodium hydroxide solution, etc., may also be stored. The anode plate and the cathode plate are immersed in the electrolyte respectively.

The cathode plate is in airflow communication with the inner space of the storage compartment of the refrigerator 1 . And in the case of electrification, the cathode plate is used to consume the oxygen in the storage compartment through an electrochemical reaction. For example, oxygen in the air can undergo a reduction reaction at the cathode plate, namely: O ₂ +2H ₂ O+4e ^- →4OH ^- .

The anode plate and the cathode plate are arranged in the reaction vessel 411 at intervals. And when energized, the anode plate is used to provide reactants (eg, electrons) to the cathode through an electrochemical reaction and generate oxygen. The OH ^- produced by the cathode plate can undergo oxidation reaction at the anode plate and generate oxygen, namely: 4OH ^- → O ₂ +2H ₂ O + 4e ^- . An oxygen exhaust port 412 may also be provided on the reaction device 410 , and the separated oxygen may be exhausted to the external environment through the oxygen exhaust port 412 .

Referring to FIG. 3 and FIG. 4 , FIG. 4 is a schematic diagram of an electrolytic deoxygenation system 40 in a refrigerator 1 according to another embodiment of the present invention, which shows that a filter device 440 is disposed inside an exhaust liquid return device 420 . In some embodiments, the electrolytic deoxygenation system 40 may further include an exhaust gas return device 420 and a filter device 440 .

The exhaust liquid return device 420 has an exhaust liquid return chamber 421 inside, and the exhaust liquid return chamber 421 communicates with the oxygen exhaust port 412, and the exhaust liquid return chamber 421 also communicates with the external environment. The oxygen separated by the reaction device 410 can be discharged from the oxygen discharge port 412 first into the exhaust liquid return chamber 421 of the exhaust liquid return device 420 , and then discharged to the external environment through the exhaust liquid return chamber 421 .

The filter device 440 is arranged on the airflow path from the exhaust return chamber 421 to the external environment. The filter device 440 is configured to allow oxygen to be discharged, and filter the electrolyte carried in the oxygen in the exhaust return chamber. 421.

It can be known from the background technology section that during the reaction process, due to the generation of a large amount of heat, the electrolyte will be heated and evaporated, which may cause a small amount of electrolyte vapor to be carried in the gas discharged from the reaction vessel. Most electrolytes are acidic or alkaline solutions, which are corrosive. If the gas generated by the reaction device is directly discharged to the air without treatment, it may cause air pollution and endanger life and health.

In this embodiment, since the filter device 440 is arranged on the airflow path from the exhaust liquid return chamber 421 to the external environment, the oxygen discharged from the exhaust liquid return chamber 421 to the external environment must pass through the filter device 440 to be filtered. The device 440 can filter the electrolyte vapor carried in the oxygen, and condense the filtered electrolyte vapor in the exhaust liquid return chamber 421, and finally converge in the exhaust liquid return chamber 421, which can prevent the electrolyte vapor from Discharge into the external environment together to protect the health of users.

In addition, because the filter device 440 can filter the electrolyte vapor carried in the oxygen in the exhaust liquid return chamber 421 of the exhaust liquid return device 420, this part of the electrolyte vapor can be cooled into the electrolyte in the exhaust liquid return chamber 421, And can be rearranged into the reaction device 410 for use in electrolytic reaction, which improves resource utilization efficiency.

In some specific embodiments, the filter device 440 can also be a molecular sieve membrane, which is a new type of membrane material that can realize molecular sieving. Performance, excellent shape-selective catalytic performance and easy to be modified, as well as a variety of different types and different structures to choose from, is an ideal membrane separation and membrane catalytic material.

Further, the molecular sieve membrane may be a micron-sized molecular sieve membrane. Molecular sieve membrane needs to pass through oxygen, but not through electrolyte vapor. Since oxygen belongs to gas, electrolyte vapor belongs to liquid, and the molecular diameter of gas is smaller than that of electrolyte vapor. Micron-sized molecular sieve membrane can allow gas (oxygen) to pass through. And prevent the liquid (electrolyte vapor) from penetrating, so that the filtering effect can be realized.

As can be seen from the foregoing, the filter device 440 is arranged on the airflow path from the exhaust gas return cavity 421 to the external environment, that is to say, as long as it is filtered before the oxygen is discharged into the indoor environment, then the filter device 440 is relatively exhausted. The location of the gas-liquid return device 420 can be flexibly selected.

Referring to Fig. 4, for example, the filter device 440 can be directly arranged in the exhaust liquid return chamber 421, so as to separate the exhaust liquid return chamber 421 into an air inlet chamber 421a and an air outlet chamber 421b, and the oxygen produced by the reaction device 410 first enters the inlet air chamber 421a, and then flows into and out of the gas chamber 421b through the filter device 440, and during this process, the filter device 440 filters out the electrolyte vapor carried in the oxygen.

For another example, the exhaust liquid return device 420 has a device for communicating with the external environment and the exhaust liquid return chamber 421 The air outlet 422 , the filter device 440 can also cover the air outlet 422 .

Referring to Fig. 5, Fig. 5 is a schematic diagram of the installation relationship between the first gas delivery pipe 451 and the filter device 440 in the electrolysis oxygen removal system 40 according to an embodiment of the present invention, wherein the dotted arrow in Fig. 5 indicates the flow direction of gas (oxygen), and the solid line Arrows indicate the flow of liquid (electrolyte vapor). For another example, the filtering device 440 may also be arranged on a pipeline for guiding the direction of oxygen discharge. Specifically, the electrolytic deoxygenation system 40 may also include a first gas delivery pipe 451 for guiding the discharge of oxygen, the first end of the first gas delivery pipe 451 is connected to the gas outlet 422, and the second end of the first gas delivery pipe 451 is exposed to in the external environment. The filter device 440 has a membrane structure, and the filter device 440 can be laid on the first gas delivery pipe 451 (either inside or at both ends).

Referring to Fig. 5, further, the membrane structure of the filter device 440 also has an air inlet surface 442 and an air outlet surface 444, oxygen can pass through the air inlet surface 442 and the air outlet surface 444 in turn, and the electrolyte vapor carried in the oxygen cannot pass through the inlet surface. On the air surface 442 , the electrolyte vapor condenses on the air inlet surface 442 into liquid “drops” and flows into the exhaust gas return device 420 .

Referring to Fig. 5, in particular, the air inlet surface 442 of the membrane structure can also be configured to be inclined relative to the horizontal plane, so that the liquid "water droplets" that condense when encountering the air inlet surface 442 will be under the surface tension of the air inlet surface 442. Under the action, it flows in an inclined direction, and then the liquid "drops" can be diverted in time, so that the liquid "drops" will not block the filter device 440, and the oxygen discharge efficiency can be improved.

Referring to FIG. 3 and FIG. 4 , in some embodiments, the exhaust gas return device 420 may also be disposed above the reaction device 410 . Since the diffusion ability of gas (oxygen) is stronger than that of liquid (electrolyte vapor), setting the exhaust gas return device 420 above the reaction device 410 will not affect the discharge of oxygen, but also make the electrolyte vapor flow under its gravity. Under the effect of weakening the trend of upward diffusion, further improving the recovery effect of the electrolyte.

Referring to FIG. 3 and FIG. 4 , in some embodiments, a first liquid return port 423 is opened at the bottom of the exhaust liquid return device 420 , and a second liquid return port 413 is opened at the top of the reaction device 410 . The electrolytic oxygen removal system 40 can also include a liquid return pipe 452, and the two ends of the liquid return pipe 452 are respectively connected to the first liquid return port 423 and the second liquid return port 413 to return the exhaust gas to the electrolyzer collected in the liquid chamber 421. The liquid is led to the reaction device 410.

Referring to FIG. 3 and FIG. 4 , further, a first one-way valve 461 can also be provided on the liquid return pipe 452 , and the first one-way valve 461 has a connection from the first liquid return port 423 to the second liquid return port 413 . direction and the non-conductive direction from the second liquid return port 413 to the first liquid return port 423, which can prevent the oxygen generated by the reaction device 410 from entering the liquid return pipe 452, thereby avoiding the presence of gas (oxygen) in the liquid return pipe 452 , In this way, it is prevented from affecting the smooth return of the electrolyte to the reaction device 410 .

Referring to FIG. 3 and FIG. 4 , in some embodiments, an air inlet 424 is opened at the bottom of the exhaust gas return device 420 . The electrolytic oxygen removal system 40 also includes a second air delivery pipe 453, the first end of which is connected to the oxygen exhaust port 412, and extends upward through the air inlet 424, so that its second end is in the exhaust return Inside the liquid chamber 421.

In this embodiment, the second end of the second air delivery pipe 453 extends upward through the air inlet 424 to the inside of the exhaust liquid return chamber 421, that is, the second end of the second air delivery pipe 453 is higher than the exhaust return chamber. The bottom wall of the liquid device 420.

Due to the electrolyte solution filtered by the filter device 440 in the exhaust liquid return device 420, these electrolytes are collected at the bottom of the exhaust liquid return device 420, and the second end of the second gas delivery pipe 453 is higher than the exhaust liquid return device. The bottom wall of 420 prevents the second end of the second gas delivery pipe 453 from being submerged in the electrolyte, so that the electrolyte flows backward from the second gas delivery pipe 453 into the reaction device 410, affecting the discharge of oxygen.

In addition, in some specific embodiments, the gas outlet 422 is arranged on the top of the exhaust liquid return device 420, and the second end of the second air delivery pipe 453 is inside the exhaust liquid return chamber 421, so that oxygen can also be exhausted into the liquid return chamber 421. The position of the exhaust gas liquid return device 420 is closer to the gas outlet 422 , thereby facilitating the exhaust of oxygen to the external environment.

Referring to FIG. 3 and FIG. 4 , further, a cut-off valve 464 may be provided on the second air delivery pipe 453 , and the cut-off valve 464 may be a manual cut-off valve, a pneumatic cut-off valve, an electric cut-off valve, and the like. The cut-off valve 464 can be in a normally open state, so as to ensure that oxygen can be in a conduction state through the second gas delivery pipe 453 . When the reaction device 410 is abnormal (such as dumping, etc.), the stop valve 464 is closed, which can prevent a large amount of electrolyte from overflowing from the second gas delivery pipe 453 into the exhaust liquid return device 420, thereby preventing damage and blockage of the filter device 440.

Referring to Fig. 6 and Fig. 7, Fig. 6 is a schematic diagram of the exhaust gas return device 420 in the electrolytic oxygen deoxygenation system 40 according to one embodiment of the present invention, and Fig. 7 is a cylinder body in the electrolytic deoxygenation system 40 according to one embodiment of the present invention 425 and the second air pipe 453 form a schematic diagram of the relationship.

In some specific embodiments, the exhaust gas return device 420 may also include a cylinder body 425 and a cylinder cover 426, the cylinder body 425 is opened upwards, and the cylinder cover 426 is detachably arranged at the opening of the cylinder body 425 to be connected with the cylinder body The bodies 425 jointly define the exhaust gas return cavity 421 .

Specifically, the cylinder body 425 and the cylinder cover 426 jointly define the exhaust liquid return chamber 421, and the cylinder body 425 and the cylinder cover 426 can be detachably connected by threaded connection, clamping, etc., which is convenient for later maintenance and inspection.

The air inlet 424 is formed on the bottom wall of the cylinder body 425 , and a pipeline joint 427 is formed around the air inlet 424 outside the bottom wall of the cylinder body 425 . The second air delivery pipe 453 can also include an outer pipe section 453a and an inner pipe section 453b, the outer pipe section 453a is located outside the cylinder 425, and the first end of the outer pipe section 453a is used as the first end of the second air delivery pipe 453, and is connected to the oxygen outlet 412, the second end of the outer pipe section 453a is connected to the pipeline joint 427, the inner pipe section 453b is located inside the cylinder body 425, the first end of the inner pipe section 453b is formed on the inner bottom wall of the cylinder body 425, and extends upward, the inner pipe section 453b The second end of the second air pipe 453 is used as the second end.

Specifically, the inner pipe section 453b can be integrally formed with the inner side of the bottom wall of the cylinder body 425, so that not only can the second end of the inner pipe section 453b (that is, the second end of the second air delivery pipe 453) be firmly positioned in the exhaust liquid return chamber 421 In addition, the process of installing the second air delivery pipe 453 can be simplified, and only the outer pipe section 453a outside the cylinder body 425 can be installed.

The pipeline joint 427 can be integrally formed with the outer side of the bottom wall of the cylinder 425. Since the pipeline joint 427 can be accurately corresponding to the air inlet 424, when the outer pipe section 453a is installed, it can be connected with the pipeline joint 427. The connection between the outer pipe section 453a and the air inlet 424 can be completed, which is simple and convenient.

In addition, the first liquid return port 423 can also be arranged at the bottom of the cylinder body 425 , and the first liquid return port 423 can also be provided with a pipe joint 427 , which is also convenient for the installation of the liquid return pipe 452 .

Referring to FIG. 3 and FIG. 4 , in some embodiments, the electrolysis oxygen removal system 40 may further include a liquid replenishment device 430 for replenishing liquid into the reaction device 410 . As the electrolysis reaction continues, the solvent (usually pure water) in the electrolyte is continuously evaporated and consumed, so in order to maintain the liquid level and concentration of the electrolyte, it is necessary to replenish the reaction device 410 regularly.

Specifically, the liquid replenishment device 430 has a liquid storage chamber, and pure water is pre-filled into the liquid storage chamber. The liquid replenishment device 430 has a liquid outlet 433 , the reaction device 410 has a liquid replenishment port 418 , and a liquid replenishment tube 454 is connected between the liquid outlet 433 and the liquid replenishment port 418 . When rehydration is required, the rehydration pipe 454 can be controlled to be turned on, and the pure water in the liquid storage chamber flows into the reaction device 410 along the rehydration pipe 454 to realize rehydration.

Referring to Fig. 3 and Fig. 4, further, a second one-way valve 462 can also be provided on the liquid replenishment pipe 454, and the second one-way valve 462 has a conducting direction from the liquid outlet 433 to the liquid replenishment port 418 and a conduction direction from the liquid replenishment port 418 to the liquid replenishment port 418. The non-conductive direction of the liquid outlet 433 can prevent the oxygen generated by the reaction device 410 from entering the liquid replenishment pipe 454, thereby preventing gas (oxygen) in the liquid replenishment pipe 454 from affecting the smooth flow of pure water into the reaction device 410.

Referring to Fig. 3 and Fig. 4, further, the top of the liquid replenishing device 430 can also be provided with an emptying port 431, and the emptying port 431 is used to communicate with the liquid storage chamber and the external environment, so as to balance the air between the liquid storage chamber and the external environment. pressure so that the pure water flows into the reaction device 410 smoothly.

Referring to FIG. 3 and FIG. 4 , further, the liquid replacement device 430 is provided with an emptying tube 432 at the emptying port 431 , so that the end of the emptying tube 432 is exposed to the external environment.

Referring to FIG. 3 and FIG. 4 , further, a third one-way valve 463 can also be provided on the emptying pipe 432, and the third one-way valve 463 has a conduction direction from the emptying port 431 to the external environment and a direction from the external environment to the exhaust. The non-conductive direction of the empty opening 431 can prevent the liquid in the liquid replenishing device 430 from overflowing through the empty opening 431 .

Referring to Fig. 3 and Fig. 4, further, the reaction device 410 also includes a partition 414, and the partition 414 is arranged in the reaction vessel 411 along the transverse direction, so as to divide the inner chamber of the reaction vessel 411 into a first liquid storage area 416 and a liquid storage area 416 located in the second The second liquid storage area 417 above the first liquid storage area 416 , the electrolysis reaction is carried out in the first liquid storage area 416 .

The separator 414 is provided with a communication port 415 for communicating with the first liquid storage area 416 and the second liquid storage area 417, the liquid replenishment device 430 communicates with the second liquid storage area 417, and the liquid replenishment device 430 first sends to the second liquid storage area 417 through the liquid replenishment tube 454. In the liquid area 417, when the first liquid storage area 416 needs liquid replenishment, the second liquid storage area 417 supplies liquid to the first liquid storage area 416 through the communication port 415.

A switch device 470 is provided at the communication port 415, and the switch device 470 has a first position and a second position for opening or closing the communication port 415, and when in the first position, the second liquid storage area 417 replenishes liquid to the first liquid storage area 416 .

In addition, the switch device 470 can also be configured to be in the second position of closing the communication port 415 after the reaction device 410 stops the reaction. After the reaction of the reaction device 410 is completed, the water vapor generated in the second liquid storage area 417 is gradually liquefied again, and a negative pressure is formed in the second liquid storage area 417. At this time, the switch device 470 is in the second position, and the second liquid storage area 417 It is impossible to obtain liquid replenishment from the first liquid storage area 416, and the electrolyte recovered from the exhaust liquid return device 420 can only be absorbed and recovered under the action of the pressure difference, which is more sufficient to promote the smooth return of the electrolyte recovered by the exhaust liquid return device 420 To the second liquid storage area 417 of the reaction device 410.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

An electrolytic deoxygenation system comprising:

A reaction device having an oxygen outlet on it, the reaction device is configured to separate the oxygen in the air flowing through it through an electrolytic reaction, and discharge it from the oxygen outlet;

The exhaust liquid return device has an exhaust liquid return chamber inside, the exhaust liquid return chamber communicates with the oxygen discharge port, and the exhaust liquid return chamber also communicates with the external environment, so that the exhaust gas Oxygen in the air return chamber is exhausted to the external environment; and

A filter device is arranged on the airflow path from the exhaust return chamber to the external environment, the filter device is configured to allow oxygen to be discharged, and filter the electrolyte carried in the oxygen in the exhaust return chamber.
The electrolytic deoxygenation system according to claim 1, wherein

The exhaust and liquid return device is provided with an air outlet;

The electrolytic deoxygenation system also includes:

The first air delivery pipe has its first end connected to the air outlet, and its second end exposed to the external environment.
The electrolytic deoxygenation system according to claim 2, wherein

The filter device has a membrane structure;

The membrane structure is laid on the first air pipe.
The electrolytic deoxygenation system according to claim 3, wherein

The membrane structure has an air inlet surface and an air outlet surface;

The air intake surface is arranged obliquely relative to the horizontal plane.
The electrolytic deoxygenation system according to any one of claims 1-4, wherein

The filter device is a molecular sieve membrane.
The electrolytic deoxygenation system according to any one of claims 1-4, wherein

The exhaust gas return device is located above the reaction device.
The electrolytic deoxygenation system according to claim 6, wherein

The bottom of the exhaust liquid return device is provided with a first liquid return port, and the top of the reaction device is provided with a second liquid return port;

The electrolytic deoxygenation system also includes:

A liquid return pipe, the two ends of which are respectively connected to the first liquid return port and the second liquid return port, so as to guide the electrolyte collected in the exhaust liquid return chamber to the reaction device.
The electrolytic deoxygenation system according to claim 6, wherein

An air inlet is provided at the bottom of the exhaust liquid return device;

The electrolytic deoxygenation system also includes:

The first end of the second air delivery pipe is connected to the oxygen outlet, and extends upward through the air inlet so that its second end is inside the exhaust liquid return chamber.
The electrolytic deoxygenation system according to claim 8, wherein

The exhaust gas return device includes a cylinder body and a cylinder cover, the cylinder body is opened upwards, and the cylinder cover is detachably arranged at the opening of the cylinder body to jointly define the exhaust gas outlet with the cylinder body. Air return to liquid cavity;

The air inlet is formed on the bottom wall of the cylinder, and a pipeline joint is formed around the air inlet outside the bottom wall of the cylinder;

The second air delivery pipe also includes:

The outer pipe section is located outside the cylinder, the first end of the outer pipe section is used as the first end of the second gas delivery pipe, and is connected to the oxygen exhaust port, and the second end of the outer pipe section is connected to the said pipeline connector;

The inner pipe section is located inside the cylinder, the first end of the inner pipe section is formed on the inner bottom wall of the cylinder and extends upward, and the second end of the inner pipe section serves as the second air delivery pipe second end.
A refrigerator, comprising the electrolytic deoxygenation system according to any one of claims 1-9.