WO2024017203A1

WO2024017203A1 - Oxygen treatment system and refrigerator

Info

Publication number: WO2024017203A1
Application number: PCT/CN2023/107746
Authority: WO
Inventors: 苗建林; 朱小兵; 李春阳
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: 2022-07-18
Filing date: 2023-07-17
Publication date: 2024-01-25
Also published as: CN218884402U

Abstract

An oxygen treatment system and a refrigerator. The oxygen treatment system comprises an oxygen treatment device and a liquid storage device, wherein the oxygen treatment device is provided with a housing and an electrode pair, the housing being provided with an electrochemical reaction bin and an exhaust bin, the electrode pair being arranged in the electrochemical reaction bin and being configured to generate oxygen via an electrochemical reaction, and the exhaust bin being in communication with a gas path of the electrochemical reaction bin and being configured to collect the oxygen generated in the electrochemical reaction bin and discharge the oxygen outwards. The liquid storage device is provided with a box body, wherein the box body is provided with a liquid storage cavity for containing liquid, the liquid storage cavity being in communication with the exhaust bin via a pipeline, so as to allow the oxygen discharged from the exhaust bin and be introduced into the liquid contained in the liquid storage cavity for filtering; and the box body is also provided with a gas outlet communicating with the liquid storage cavity and being configured to discharge the filtered oxygen outwards, so that electrolyte impurities carried by the oxygen can be completely filtered out.

Description

Oxygen treatment system and refrigerator

Technical field

The present invention relates to controlled atmosphere preservation technology, in particular to oxygen treatment systems and refrigerators.

Background technique

Controlled atmosphere preservation technology is a technology that extends the storage life of food by adjusting the composition of ambient gases. The oxygen treatment device can process oxygen through the electrochemical reaction of the electrode to create a low-oxygen preservation atmosphere or a high-oxygen preservation atmosphere.

Electrochemical reactions usually take place in electrolytes. During the reaction process, due to the generation of a large amount of heat, the electrolyte will evaporate due to heat, which may cause trace amounts of electrolyte to be carried in the gas discharged from the reaction vessel. Most electrolytes are acidic solutions or alkaline solutions and are corrosive. If the gas generated by the oxygen treatment device is directly discharged or reused without filtration, it may cause air pollution and endanger life and health.

The above information disclosed in this Background Art is only for increasing understanding of the Background Art of this application and, therefore, it may contain prior art that does not constitute prior art known to a person of ordinary skill in the art.

Contents of the invention

The object of the present invention is to provide an improved oxygen treatment system and refrigerator to improve the oxygen treatment system's filtration effect on oxygen generated by electrochemical reactions, so as to more thoroughly filter out electrolyte impurities carried by oxygen.

In order to achieve the above object, the present invention provides an oxygen treatment system, which includes an oxygen treatment device and a liquid storage device. The oxygen treatment device has a shell and an electrode pair, and the shell has an electrochemical reaction chamber and an exhaust chamber; The electrode pair is arranged in the electrochemical reaction chamber and is used to generate oxygen through electrochemical reaction; the exhaust chamber is connected to the gas path of the electrochemical reaction chamber and is used to collect the oxygen generated in the electrochemical reaction chamber to be exported to the outside. Discharge; the liquid storage device has a box body, and the box body has a liquid storage cavity for holding liquid. The liquid storage cavity is used to communicate with the exhaust chamber through a pipeline to allow the exhaust chamber to discharge Oxygen is passed into the liquid contained in the liquid storage chamber to achieve filtration; the box body is also provided with an air outlet connected to the liquid storage chamber and used to discharge the filtered oxygen outward.

Further, the oxygen treatment system further includes a gas pipeline connecting the exhaust chamber and the liquid storage chamber; and the gas pipeline shrinks sharply relative to the fluid cross section of the exhaust chamber. .

Further, a part of the top wall of the box forms a hollow columnar air inlet by bulging upward; a part of the top wall of the exhaust chamber forms a hollow cylindrical shape by bulging upward and shrinks sharply relative to the fluid cross-section of the exhaust chamber. An exhaust hole; and one end of the gas pipeline is connected to the exhaust hole, and the other end is connected to the air inlet.

Further, the oxygen treatment system further includes a one-way pressure relief valve, which is connected to the gas pipeline and has a pressure relief valve port connected to the external environment. The pressure relief valve port is It is opened when the air pressure in the gas pipeline increases to a preset threshold to allow gas flowing through the gas pipeline to pass in one direction.

Further, at least a part of the gas transmission pipeline extends upward obliquely with respect to the horizontal plane to form an acute angle or a right angle with the horizontal plane.

Further, the angle between the gas pipeline and the horizontal plane is greater than or equal to 7°.

Further, a first partition extending longitudinally and a second partition extending transversely are provided in the housing; wherein The first partition separates the internal space of the housing into a first space and a second space arranged side by side in the transverse direction; the second partition separates the first space into balance bins arranged up and down. and a fluid replenishment chamber, while dividing the second space into the exhaust chamber and the electrochemical reaction chamber arranged up and down; the first partition is provided with a hole connecting the fluid replenishment chamber and the electrochemical reaction chamber. The first communication port of the chamber; the second partition plate is provided with a second communication port that connects the exhaust chamber and the electrochemical reaction chamber, and a third communication port that connects the balance chamber and the rehydration chamber. ; The balance chamber is provided with a fluid replenishing port connected to its internal space, and the fluid replenishing port is connected to the liquid storage chamber.

Further, the box body is also provided with a liquid outlet connected to the liquid storage chamber; and the oxygen treatment system further includes a liquid replenishment pipeline, which is connected to the liquid replenishment port and the liquid outlet, so that the storage chamber is The liquid contained in the liquid cavity flows into the electrochemical reaction chamber through the liquid replenishment pipeline to realize liquid replenishment.

Further, the liquid outlet is higher than the liquid replenishing port.

To achieve the above object, the present invention also provides a refrigerator, including: a box with a storage space formed inside; and the above-mentioned oxygen treatment system, wherein the air outlet is connected to the storage space so that the liquid storage Oxygen filtered by the device flows into the storage space.

The beneficial effects of the present invention are: in the oxygen treatment system and refrigerator of the present invention, by designing the fluid cross-sectional area of the gas pipeline and the exhaust bin, the oxygen flowing from the exhaust bin into the gas pipeline is separated from the oxygen due to the increase in air resistance. The carried electrolyte is separated. At this time, there is no need to add any additional gas-liquid separation mechanism in the exhaust chamber, so that the oxygen carrying the electrolyte can complete the preliminary gas-liquid separation. This is conducive to simplifying the structure of the oxygen filter component of the oxygen treatment system. , thereby reducing the manufacturing cost of the entire system.

Furthermore, by connecting a one-way pressure relief valve to the gas pipeline and having a pressure relief valve port connected to the external environment, the air pressure of the pressure relief valve port in the gas pipeline increases to a preset level. It is opened when the threshold is exceeded to allow the gas flowing through the gas pipeline to flow out to the external environment in one direction through the pressure relief valve port. This can reduce the air pressure in the gas pipeline, thereby reducing or avoiding the electrochemical hazards caused by the obstruction of oxygen discharge. The pressure in the reaction chamber and gas pipeline increases, which is beneficial to improving the structural stability of the entire system.

Description of drawings

Figure 1 is a schematic structural diagram of the oxygen treatment system of the present invention;

Figure 2 is a schematic perspective view of the oxygen treatment device of the oxygen treatment system shown in Figure 1;

Figure 3 is a schematic exploded view of the oxygen treatment device of the oxygen treatment system shown in Figure 2;

Figure 4 is a schematic structural diagram of the housing of the oxygen treatment device of the oxygen treatment system shown in Figure 2;

Figure 5 is a schematic perspective view of the liquid storage device of the oxygen treatment system shown in Figure 1;

Figure 6 is a schematic structural diagram of the refrigerator of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the drawings and specific embodiments.

The embodiment of the present invention first provides an oxygen treatment system 10. Figure 1 is an oxygen gas according to an embodiment of the present invention Schematic block diagram of processing system 10. The oxygen treatment system 10 includes an oxygen treatment device 200 and a liquid storage device 300 .

The oxygen treatment device 200 has a housing 210 and an electrode pair 220 . Among them, the housing 210 has an electrochemical reaction chamber 211 and an exhaust chamber 212. FIG. 2 is a schematic perspective view of the oxygen treatment device 200 of the oxygen treatment system 10 shown in FIG. 1 . FIG. 3 is a schematic exploded view of the oxygen treatment device 200 of the oxygen treatment system 10 shown in FIG. 2 . FIG. 4 is a schematic structural diagram of the housing 210 of the oxygen treatment device 200 of the oxygen treatment system 10 shown in FIG. 2 . As shown in Figures 2-4, the housing 210 can be integrally injection molded. The electrochemical reaction chamber 211 and the exhaust chamber 212 are two independent spaces in the housing 210. For example, a partition can be used to separate the internal space of the housing 210 into the electrochemical reaction chamber 211 and the exhaust chamber 212.

The electrochemical reaction chamber 211 serves as a place where the electrode pair 220 performs electrochemical reactions, and has a reaction chamber for containing electrolyte. The electrode pair 220 is disposed in the electrochemical reaction chamber 211 and used to generate oxygen through electrochemical reaction. When the electrode pair 220 is disposed in the electrochemical reaction chamber 211, the electrode pair 220 is immersed in the electrolyte contained in the electrochemical reaction chamber 211. For example, the electrode pair 220 can be disposed inside the electrochemical reaction chamber 211 or can be used as an electrochemical reaction chamber. A wall of the reaction chamber 211. The electrode pair 220 may include an anode plate 222 and a cathode plate 221, and is used to generate oxygen by performing an electrochemical reaction under the action of an electrolysis voltage. The reaction that generates oxygen may refer to the electrochemical reaction performed by the anode plate 222 . The electrochemical reaction performed by the cathode plate 221 may be a reduction reaction that consumes oxygen and provides reactants to the anode plate 222 . The oxygen consumed by the cathode plate 221 comes from outside the casing 210 . The oxygen generated by the anode plate 222 can be enriched in the electrochemical reaction chamber 211 and discharged to the exhaust chamber 212 described below.

The exhaust chamber 212 is connected to the gas path of the electrochemical reaction chamber 211 and is used to collect oxygen generated in the electrochemical reaction chamber 211 for discharge to the outside. For example, by opening a hole in the partition plate, the exhaust chamber 212 and the electrochemical reaction chamber 211 can be connected in a gas path. The exhaust chamber 212 is an oxygen collection chamber within the housing 210 . The oxygen generated in the electrochemical reaction chamber 211 can flow into the exhaust chamber 212 and be discharged outward from the exhaust chamber 212 .

In this embodiment, the liquid storage device 300 and the oxygen treatment device 200 are provided separately and independently. FIG. 5 is a schematic perspective view of the liquid storage device 300 of the oxygen treatment system 10 shown in FIG. 1 . The liquid storage device 300 has a box body 310, and the box body 310 has a liquid storage cavity 311 for containing liquid. The liquid storage chamber 311 can be used to communicate with the exhaust chamber 212 through a pipeline to allow oxygen discharged from the exhaust chamber 212 to pass into the liquid contained in the liquid storage chamber 311 to achieve filtration. Since the liquid storage device 300 and the oxygen treatment device 200 are provided separately and independently, the liquid storage chamber 311 and the exhaust chamber 212 can be connected through a pipeline to achieve gas path communication between the liquid storage chamber 311 and the exhaust chamber 212 . The pipeline can be configured and connected by the user, and of course it can also be used as an accessory to form a part of the oxygen treatment system 10 . For example, the exhaust chamber 212 may be provided with an exhaust hole 212a, and the box body 310 may be provided with an air inlet 312 connected to the liquid storage chamber 311. The exhaust hole 212a and the air inlet 312 may be connected through a pipeline.

When the oxygen discharged from the exhaust chamber 212 passes into the liquid contained in the liquid storage chamber 311, the electrolyte carried by the oxygen dissolves in the liquid contained in the liquid storage chamber 311. The liquid contained in the liquid storage chamber 311 can be set according to the solubility of the electrolyte carried by the oxygen to be filtered and the solubility of the oxygen itself, as long as the electrolyte carried by the oxygen can be dissolved and pure gaseous oxygen is difficult to dissolve. That’s it. When the electrolyte carried by the oxygen is an acidic solution or an alkaline solution, the liquid contained in the liquid storage chamber 311 can be water, but is not limited thereto. For example, it can also be changed to a low-concentration electrolyte.

The liquid storage chamber 311 may be provided with an air filter pipe 315, which is connected to the air inlet 312 and extends to the bottom of the liquid storage chamber 311. section to guide the gas flowing into the air inlet 312 to the bottom section of the liquid storage chamber 311, thereby extending the flow path of the gas in the liquid storage chamber 311 and achieving full filtration.

The box body 310 is also provided with an air outlet 313 that communicates with the liquid storage chamber 311 and is used to discharge filtered oxygen to the outside. The oxygen discharged from the air outlet 313 can pass into the closed space, so that the closed space creates a high-oxygen fresh-keeping atmosphere.

Using the above solution, since the exhaust chamber 212 of the oxygen treatment device 200 is connected to the gas path of the electrochemical reaction chamber 211 and is used to collect the oxygen generated by the electrochemical reaction chamber 211 and discharge it outward, and the exhaust chamber 212 and the liquid storage device 300 The liquid storage chambers 311 are connected through pipelines. Therefore, when the oxygen generated by the electrochemical reaction chamber 211 flows through the exhaust chamber 212 and the pipeline in sequence, the oxygen carrying the electrolyte can flow through the exhaust chamber 212 and the pipeline. Preliminary gas-liquid separation is performed during the pipeline process, and then secondary filtration can be performed when the liquid contained in the liquid storage chamber 311 flows through, so that electrolyte impurities carried by oxygen can be relatively thoroughly filtered.

The anode plate 222 and the cathode plate 221 may each have a plate shape. Under current conditions, for example, oxygen in the air can undergo a reduction reaction at the cathode plate 221, namely: O2+2H2O+4e-→4OH-. The OH- generated by the cathode plate 221 can undergo an oxidation reaction at the anode plate 222 and generate oxygen, that is: 4OH-→O2+2H2O+4e-.

The above examples of the electrochemical reactions of the anode plate 222 and the cathode plate 221 are only illustrative. Based on understanding the above embodiments, those skilled in the art should easily change the types of electrochemical reactions, and these changes should fall within this article. protection scope of the invention.

In some optional embodiments, the oxygen treatment system 10 further includes a gas pipeline 400 that connects the exhaust chamber 212 and the liquid storage chamber 311 so that the exhaust chamber 212 and the liquid storage chamber 311 are connected. The fluid cross-section of the gas transmission pipeline 400 shrinks sharply relative to the exhaust chamber 212, so that the oxygen flowing into the gas transmission pipeline 400 from the exhaust chamber 212 is separated from the electrolyte it carries due to the increase in air resistance.

As an oxygen collection bin, the exhaust bin 212 has a large internal space, while the diameter of the gas pipeline 400 is relatively small. Therefore, the fluid cross-section of the gas pipeline 400 shrinks sharply relative to the exhaust bin 212, and the gas pipeline 400 is self-draining. The flow resistance of the oxygen flowing into the gas pipeline 400 from the gas chamber 212 increases, causing the bubbles to burst, thereby causing the electrolyte carried by the oxygen to separate from the pure gaseous oxygen and remain there. The retained electrolyte can flow back to the exhaust chamber 212 and return to the electrochemical reaction chamber 211.

By designing the fluid cross-sectional area of the gas pipeline 400 and the exhaust chamber 212, the oxygen flowing from the exhaust chamber 212 into the gas pipeline 400 is separated from the electrolyte it carries due to the increase in air resistance. At this time, the exhaust chamber There is no need to add any additional gas-liquid separation mechanism in 212, so that the oxygen carrying the electrolyte can complete preliminary gas-liquid separation, which is conducive to simplifying the structure of the oxygen filter component of the oxygen treatment system 10, thereby reducing the manufacturing cost of the entire system.

In some optional embodiments, a portion of the top wall of the box 310 is bulged upward to form a hollow columnar air inlet 312 . A portion of the top wall of the exhaust chamber 212 bulges upward to form a hollow columnar exhaust hole 212 a that shrinks sharply relative to the fluid cross-section of the exhaust chamber 212 . One end of the gas pipeline 400 is connected to the exhaust hole 212a, and the other end is connected to the air inlet 312. For example, one end of the gas pipeline 400 can be sleeved on the outside of the hole wall of the exhaust hole 212a, or embedded on the inside of the hole wall of the exhaust hole 212a, and the other end of the gas pipeline 400 can be sleeved on the air inlet 312. outside the hole wall, or embedded inside the hole wall of the air inlet 312 to achieve connection.

Of course, in other optional examples, an opening may be directly opened on the top wall of the exhaust chamber 212 as the exhaust hole 212a; an opening may also be directly opened on the top wall of the box body 310 as the air inlet 312. One end of the gas pipeline 400 can be directly inserted into the exhaust hole 212a, and embedded in the exhaust hole 212a with an interference fit; the other end of the gas pipeline 400 can be directly inserted into the air inlet 312, and with an interference fit. An interference fit is embedded in the air inlet 312 to achieve connection.

In some optional embodiments, the oxygen treatment system 10 may further include a one-way pressure relief valve 500 connected to the gas transmission pipeline 400 . For example, the one-way pressure relief valve 500 can be installed on the gas transmission pipeline 400 through threaded connection or flange connection. The one-way pressure relief valve 500 may have an air inlet valve port and an air outlet valve port, and also have a pressure relief valve port connected to the external environment. Among them, the air inlet valve port and the air outlet valve port are respectively connected to the gas transmission pipeline 400 and are in a normally open state. The pressure relief valve port is in a normally closed state, and the pressure relief valve port is used to open when the air pressure in the gas pipeline 400 increases to a preset threshold to allow the gas flowing through the gas pipeline 400 to pass in one direction, thereby being discharged to in the external environment. The external environment refers to the external space of the gas pipeline 400 .

For example, the one-way pressure relief valve 500 can be a solenoid valve, and its pressure relief valve port can be controlled to open when the air pressure in the gas pipeline 400 increases to a preset threshold to connect the gas pipeline 400 and its external environment, so that The gas in the gas pipeline 400 can be discharged to the external environment, thereby reducing the internal air pressure of the gas pipeline 400 and the electrochemical reaction chamber 211 indirectly connected to the gas pipeline 400 . The preset threshold can be set according to the maximum pressure that the cathode plate 221 and the anode plate 222 provided in the electrochemical reaction chamber 211 can withstand.

Using the above structure, by connecting the one-way pressure relief valve 500 to the gas pipeline 400, and allowing the one-way pressure relief valve 500 to have a pressure relief valve port connected to the external environment, the pressure relief valve port can maintain the air pressure in the gas pipeline 400. It opens when it reaches the preset threshold to allow the gas flowing through the gas pipeline 400 to flow out to the external environment in one direction through the pressure relief valve port. In this way, the air pressure in the gas pipeline 400 can be reduced, thereby reducing or avoiding accidents. The obstruction of oxygen discharge causes the air pressure of the electrochemical reaction chamber 211 and the gas transmission pipeline 400 to increase, which is beneficial to improving the structural stability of the entire system.

In some examples, at least a portion of gas pipeline 400 extends in a vertical direction. In some other optional examples, at least a portion of the gas pipeline 400 extends upward obliquely with respect to the horizontal plane to form an acute or right angle with the horizontal plane.

For example, the end section of the gas pipeline 400 close to the exhaust chamber 212 may extend in the vertical direction, or extend upward obliquely relative to the horizontal plane to form a non-zero angle, such as an acute angle or a right angle, with the horizontal plane.

Using the above structure, the electrolyte remaining in the gas pipeline 400 can flow back to the exhaust chamber 212 under the action of gravity, and then return to the electrochemical reaction chamber 211 to achieve recycling and reuse, while reducing the risk of the gas pipeline 400 becoming blocked. risk.

In a further example, the angle between the end section of the gas transmission pipeline 400 close to the exhaust chamber 212 and the horizontal plane is greater than or equal to 7°. That is, the inclined section of the gas pipeline 400 is inclined upward by at least 7° relative to the horizontal plane. Such an arrangement can ensure that almost all the electrolyte in the gas pipeline 400 can smoothly flow back to the exhaust chamber 212, and at the same time, the inclined section of the gas pipeline 400 can be freely and flexibly arranged within a wide angle range relative to the horizontal plane.

In some optional embodiments, the housing 210 is provided with a first partition 213 extending longitudinally and a second partition 214 extending transversely. The plate surface of the first partition 213 may be a vertical surface, and extends from the lower surface of the top wall of the housing 210 to the upper surface of the bottom wall of the housing 210 . The board surface of the second partition 214 may be a horizontal surface and spans two sides of the housing 210 between the inner surfaces of the wall.

Of course, the board surface of the first partition 213 may not be a strictly vertical surface, and the board surface of the second partition 214 may not be a strictly horizontal surface. For example, the board surface of the first partition 213 may not be vertical in the strict sense. The angle between the straight surfaces may form an acute angle, and the angle between the plate surface of the second partition 214 and the horizontal surface may form an acute angle; or the plate surface of the first partition 213 may be connected by multiple continuous plate segments. , the plate surface of the second partition plate 214 can be connected by a plurality of continuous plate sections; as long as the plate surface of the first partition plate 213 extends generally along the longitudinal direction and the plate surface of the second partition plate 214 extends generally along the transverse direction, that is, Can.

The first partition 213 separates the internal space of the housing 210 into a first space and a second space arranged side by side in the transverse direction. The second partition 214 separates the first space into a balancing chamber 215 and a replenishing chamber 216 arranged up and down, and simultaneously separates the second space into an exhaust chamber 212 and an electrochemical reaction chamber 211 arranged up and down. And the balance chamber 215 is provided with a replenishing port 202.

The first partition 213 is provided with a first communication port 217 that connects the liquid replenishing chamber 216 and the electrochemical reaction chamber 211 . The second partition 214 is provided with a second communication port 218 that communicates with the exhaust chamber 212 and the electrochemical reaction chamber 211 and a third communication port 219 that communicates with the balance chamber 215 and the liquid replenishment chamber 216 . The balance chamber 215 is provided with a fluid replenishing port 202 connected to its internal space, and the fluid replenishing port 202 is connected to the liquid storage chamber 311 .

After the liquid contained in the liquid storage chamber 311 flows into the liquid replenishment port 202 and enters the balance chamber 215, it can flow into the liquid replenishment chamber 216 through the third communication port 219 under the action of gravity. The liquid in the liquid replenishment chamber 216 can flow into the electric battery through the first communication port 217. Chemical reaction chamber 211. The oxygen generated in the electrochemical reaction chamber 211 flows into the exhaust chamber 212 through the second communication port 218, flows into the gas transmission pipeline 400 through the exhaust hole 212a of the exhaust chamber 212, and then flows into the liquid storage chamber 311 and flows through the liquid storage chamber. The liquid contained in 311 is filtered, and the filtered oxygen flows out of the liquid storage chamber 311 through the air outlet 313 on the box 310.

In some optional embodiments, the box body 310 is also provided with a liquid outlet 314 connected to the liquid storage chamber 311 . The oxygen treatment system 10 may further include a fluid replenishment pipeline 600 that connects the fluid replenishment port 202 and the liquid outlet 314 so that the liquid contained in the liquid storage chamber 311 flows into the electrochemical reaction chamber 211 through the fluid replenishment pipeline 600 to achieve fluid replenishment.

In some further embodiments, the fluid outlet 314 is higher than the fluid replenishment port 202 . In one example, the liquid outlet 314 can be located in the bottom section of the liquid storage chamber 311, and the liquid replenishing port 202 can be located in the upper section of the electrochemical reaction chamber 211, or higher than the electrochemical reaction chamber 211 and indirectly through the liquid channel. Connected to the electrochemical reaction chamber 211. In this way, the liquid contained in the liquid storage chamber 311 can flow into the electrochemical reaction chamber 211 under the action of gravity to replenish the electrochemical reaction chamber 211, so that the liquid level in the electrochemical reaction chamber 211 is always higher than the preset value. Thus meeting the basic needs of electrochemical reactions.

That is to say, the liquid storage device 300 of this embodiment is used not only to filter oxygen, but also to replenish liquid to the electrochemical reaction chamber 211. In this way, the electrolyte remaining in the liquid storage chamber 311 when filtering oxygen can flow back to Electrochemical reaction chamber 211, thereby realizing recycling and reuse.

A liquid level switch may be provided in the fluid replenishment chamber 216 to open or close the third communication port 219 according to the liquid level in the fluid replenishment chamber 216, thereby allowing or preventing the liquid in the balance chamber 215 from flowing into the fluid replenishment chamber 216, so that the fluid replenishment chamber 216 and The liquid level of the electrochemical reaction chamber 211 is in a dynamic equilibrium state.

An installation opening is provided on the side wall of the housing 210 . The cathode plate 221 can be disposed at the installation opening and together with the housing 210 define an electrochemical reaction chamber 211 for containing electrolyte. The anode plate 222 may be spaced apart from the cathode plate 221. Inside the electrochemical reaction chamber 211.

In some optional embodiments, the number of installation openings may be multiple, and one cathode plate 221 may be provided at each installation opening. In this embodiment, at least one third partition extending longitudinally is provided in the electrochemical reaction chamber 211. The third partition separates the internal space of the electrochemical reaction chamber 211 into multiple reaction chamber units arranged side by side in the transverse direction. Each reaction chamber unit corresponds to an installation port. A fourth communication port 201 is provided on each third partition, so that each reaction chamber unit is directly or indirectly connected to the fluid replenishment chamber 216 to facilitate fluid replenishment. There may be a plurality of electrode pairs 220, and they are arranged in one-to-one correspondence with the reaction chamber unit. Each electrode pair 220 is arranged in a corresponding reaction chamber unit. The electrode pairs 220 can be connected in parallel or in series, which is beneficial to improving the oxygen regulation efficiency of the entire oxygen treatment device 200 .

The present invention also provides a refrigerator 1, which includes a box 100 and the oxygen treatment system 10 as in any of the above embodiments. Figure 6 is a schematic structural diagram of the refrigerator 1 according to an embodiment of the present invention.

A storage space 110 is formed inside the box 100 . The air outlet 313 is connected to the storage space 110, so that the oxygen filtered by the liquid storage device 300 flows into the storage space 110, thereby creating a high-oxygen fresh-keeping atmosphere in the storage space 110.

In some optional embodiments, the storage space 110 may include multiple sealed spaces, for example, it may include a high oxygen preservation space and a low oxygen preservation space. Each sealed space may be an internal space of a sealed storage container (such as a drawer or a storage box). The air outlet 313 can be connected to the high-oxygen fresh-keeping space. The cathode plate 221 of the oxygen treatment device 200 can be connected with the air flow of the low-oxygen fresh-keeping space to use the oxygen in the low-oxygen fresh-keeping space as a reactant to perform an electrochemical reaction, thereby reducing the oxygen content in the low-oxygen fresh-keeping space and creating a low-oxygen fresh-keeping space. Create a low-oxygen preservation atmosphere.

Using the above structure, the refrigerator 1 of this embodiment can create a low-oxygen fresh-keeping atmosphere and a high-oxygen fresh-keeping atmosphere at the same time, and has excellent controlled atmosphere fresh-keeping performance. Since the electrolyte discharged from the electrochemical reaction chamber 211 along with the oxygen can be recycled and reused, and the liquid storage device 300 can replenish the electrochemical reaction chamber 211, the oxygen treatment device 200 can continuously perform electrochemistry for a long period of time. The reaction enables the refrigerator 1 to maintain a low-oxygen preservation atmosphere and a high-oxygen preservation atmosphere for a long period of time to meet the daily use needs of users.

The above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently substituted. without departing from the spirit and scope of the technical solution of the present invention.

Claims

An oxygen treatment system including:

Oxygen treatment device, which has a shell and an electrode pair, the shell has an electrochemical reaction chamber and an exhaust chamber; the electrode pair is arranged in the electrochemical reaction chamber and used to generate oxygen through electrochemical reaction; the exhaust chamber The gas chamber is connected to the gas path of the electrochemical reaction chamber and is used to collect the oxygen generated in the electrochemical reaction chamber for discharge to the outside; and

A liquid storage device has a box body, the box body has a liquid storage chamber for holding liquid, and the liquid storage chamber is used to communicate with the exhaust chamber through a pipeline to allow the exhaust chamber to discharge Oxygen is passed into the liquid contained in the liquid storage chamber to achieve filtration; the box body is also provided with an air outlet connected to the liquid storage chamber and used to discharge the filtered oxygen outward.
The oxygen treatment system according to claim 1, characterized in that, the oxygen treatment system further includes a gas pipeline, the gas pipeline connects the exhaust chamber and the liquid storage chamber; and the gas pipeline The flow cross-section relative to the exhaust chamber shrinks sharply.
The oxygen treatment system according to claim 2, characterized in that, a part of the top wall of the box forms a hollow columnar air inlet by bulging upward; a part of the top wall of the exhaust chamber forms a hollow cylindrical shape by bulging upward. An exhaust hole is sharply shrunk relative to the fluid cross-section of the exhaust chamber; and one end of the gas pipeline is connected to the exhaust hole, and the other end is connected to the air inlet.
The oxygen treatment system according to claim 2, characterized in that, the oxygen treatment system further includes a one-way pressure relief valve, the one-way pressure relief valve is connected to the gas transmission pipeline, and has a connection to the external environment. A pressure relief valve port, which is used to open when the air pressure in the gas transmission pipeline increases to a preset threshold to allow one-way passage of gas flowing through the gas transmission pipeline.
The oxygen treatment system according to claim 2, characterized in that at least a part of the gas transmission pipeline extends upward obliquely with respect to the horizontal plane to form an acute angle or a right angle with the horizontal plane.
The oxygen treatment system according to claim 5, characterized in that the angle between the gas pipeline and the horizontal plane is greater than or equal to 7°.
The oxygen treatment system according to claim 1, wherein a first partition extending longitudinally and a second partition extending transversely are provided in the housing; wherein the first partition separates the housing. The internal space of the body separates a first space and a second space arranged side by side in the transverse direction; the second partition separates the first space into a balance chamber and a rehydration chamber arranged up and down, and at the same time, the second partition The space separates the exhaust chamber and the electrochemical reaction chamber arranged up and down;

The first partition is provided with a first communication port connecting the liquid replenishing chamber and the electrochemical reaction chamber; the second partition is provided with a first communication port connecting the exhaust chamber and the electrochemical reaction chamber. The second communication port and the third communication port connect the balance chamber and the liquid replenishment chamber; the balance chamber is provided with a liquid replenishment port connected to its internal space, and the liquid replenishment port is connected to the liquid storage chamber.
The oxygen treatment system according to claim 7, characterized in that the box body is also provided with a liquid outlet connected to the liquid storage chamber; and the oxygen treatment system further includes a liquid replenishment pipeline connected to the liquid replenishment chamber. port and the liquid outlet, so that The liquid contained in the liquid storage cavity flows into the electrochemical reaction chamber through the liquid replenishment pipeline to realize liquid replenishment.
The oxygen treatment system according to claim 8, wherein the liquid outlet is higher than the liquid replenishing port.
A refrigerator is characterized in that it includes:

A box, the interior of which forms a storage space; and

The oxygen treatment system according to any one of claims 1 to 9, wherein the air outlet is connected to the storage space, so that the oxygen filtered by the liquid storage device flows into the storage space.