CN217465119U

CN217465119U - Oxygen treatment device and refrigerator with same

Info

Publication number: CN217465119U
Application number: CN202123034702.6U
Authority: CN
Inventors: 王睿龙; 苗建林; 刘浩泉; 黄璐璐
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: 2022-09-20
Anticipated expiration: 2031-12-03

Abstract

The utility model provides an oxygen treatment device and refrigerator that has it, oxygen treatment device includes: a cathode portion for consuming oxygen through an electrochemical reaction under the action of an electrolysis voltage; an anode part for generating oxygen through an electrochemical reaction under the action of an electrolysis voltage; and a barrier section provided between the anode section and the cathode section, for blocking the anode section and the cathode section to prevent oxygen generated from the anode section from diffusing to the cathode section. Through add separation portion between positive pole portion and negative pole portion, played the effect that prevents the oxygen that positive pole portion produced to the diffusion of negative pole portion to can promote the directional output of the produced oxygen of positive pole portion, also can avoid negative pole portion to lead to oxygen processing apparatus can't consume the oxygen of exterior space because of utilizing the oxygen from positive pole portion to carry out electrochemical reaction, consequently, the utility model discloses an oxygen processing apparatus and refrigerator possess higher oxygen consumption efficiency and oxygen suppliment efficiency.

Description

Oxygen treatment device and refrigerator with same

Technical Field

The utility model relates to a fresh-keeping technique especially relates to oxygen processing apparatus and refrigerator that has it.

Background

With the continuous improvement of living standard, people have higher and higher requirements on the preservation of articles. In the field of preservation of articles (such as food materials, medicines and the like), oxygen is one of the key factors influencing the preservation effect of the articles. For example, for food materials such as fruits and vegetables, high concentration of oxygen can promote respiration of fruits and vegetables, reduce organic matter content, and cause loss of nutrients, and for food materials such as meat, low concentration of oxygen can affect color and taste of the food materials.

The present inventors have recognized that there is a need for an oxygen treatment apparatus having an oxygen consumption function and an oxygen supply function. On the basis of the above, the inventor also recognized that, since the oxygen consumption process and the oxygen supply process are both treated with oxygen, the oxygen consumption process and the oxygen supply process may interfere with each other, thereby reducing the oxygen consumption efficiency and the oxygen supply efficiency of the apparatus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome at least one technical defect among the prior art, provide an oxygen processing apparatus and have its refrigerator.

A further object of the present invention is to provide an oxygen treatment device and a refrigerator having high oxygen consumption efficiency and oxygen supply efficiency.

The utility model discloses a further another purpose makes oxygen processing apparatus and refrigerator utilize simple structure to build out the fresh-keeping atmosphere of hypoxemia and the fresh-keeping atmosphere of hyperoxia simultaneously.

The utility model discloses a still further purpose makes oxygen processing apparatus self possess the fluid infusion function, and the extension is effective during operation.

The utility model discloses a still further liquid level that makes oxygen processing apparatus's stock solution intracavity is in higher level all the time.

According to an aspect of the utility model, an oxygen processing apparatus is provided, include: a cathode portion for consuming oxygen through an electrochemical reaction under the action of an electrolysis voltage; an anode part for generating oxygen through an electrochemical reaction under the action of an electrolysis voltage; and a barrier section provided between the anode section and the cathode section, for blocking the anode section and the cathode section to prevent oxygen generated from the anode section from diffusing to the cathode section.

Optionally, the oxygen treatment device further comprises: a housing having an opening formed therein; the cathode part is arranged at the opening so as to define a liquid storage cavity for containing electrolyte together with the shell; the blocking part is arranged in the liquid storage cavity and divides the liquid storage cavity into a first subspace and a second subspace; the first subspace is communicated with the cathode part, and the anode part is arranged in the second subspace.

Optionally, the blocking part is a porous net-shaped diaphragm with a pore diameter of 1mm or less for allowing the electrolyte to permeate and preventing oxygen bubbles from permeating, wherein the oxygen bubbles are formed when the oxygen generated by the anode part flows in the electrolyte.

Optionally, the anode portion is a nickel mesh or a titanium mesh.

Optionally, the cathode portion has a catalytic film made from a precursor by a hot press process; and the precursor comprises carbon-supported silver particles and carbon-supported manganese dioxide particles.

Optionally, the inside of the housing further defines a fluid infusion chamber located at one side of the fluid storage chamber and communicating with the fluid storage chamber for infusing fluid into the fluid storage chamber.

Optionally, the interior of the housing has a partition that divides the interior space of the housing into a fluid reservoir and a fluid replacement chamber; and the separator is provided with a communicating port for communicating the liquid replenishing cavity and the liquid storage cavity.

Optionally, the partition extends obliquely at a preset angle with the vertical direction, so that the liquid storage cavity is gradually enlarged from bottom to top, and the liquid storage cavity and the liquid supplementing cavity are horizontally arranged in parallel; and the communication port is located at a bottom section of the partition.

Optionally, the casing is provided with a fluid infusion port for communicating the fluid infusion cavity with an external environment of the casing; the oxygen processing apparatus further includes: the fluid infusion container is internally provided with a fluid infusion space for storing fluid, and is provided with a fluid supply port for communicating with the fluid infusion port so as to infuse fluid into the fluid infusion cavity; and the liquid level switch is provided with a switch body, is arranged in the fluid infusion cavity and is configured to open the fluid infusion port when the liquid level in the fluid infusion cavity is reduced to be lower than the cathode part so as to enable the fluid infusion container to infuse fluid into the fluid infusion cavity.

According to the utility model discloses an on the other hand, still provide a refrigerator and include: an oxygen treatment device as claimed in any preceding claim.

The utility model discloses an oxygen treatment device and refrigerator that has it because be provided with separation portion between anode portion and the negative pole portion, this separation portion passes through separation anode portion and negative pole portion, has played the effect that prevents the oxygen that anode portion produced to the diffusion of negative pole portion to can promote the directional output of the produced oxygen of anode portion, also can avoid the negative pole portion because of utilizing the oxygen from anode portion to carry out electrochemical reaction and lead to the oxygen that oxygen treatment device can't consume the exterior space, consequently, the utility model discloses an oxygen treatment device and refrigerator possess higher oxygen consumption efficiency and oxygen suppliment efficiency.

Further, the utility model discloses an oxygen treatment device and refrigerator that has it through set up separation portion between positive pole portion and negative pole portion to make positive pole portion and negative pole portion carry out the oxygen suppliment reaction respectively and consume the oxygen reaction, can make oxygen treatment device can be to a certain exterior space supply oxygen, can consume the oxygen of another exterior space again, consequently, the utility model discloses an oxygen treatment device and refrigerator can utilize simple structure to build out low oxygen fresh-keeping atmosphere and high oxygen fresh-keeping atmosphere simultaneously.

Further, the utility model discloses an oxygen treatment device and refrigerator that has it because oxygen treatment device's casing is inside to have the fluid infusion chamber, and this fluid infusion chamber communicates with each other with the stock solution chamber, can be to stock solution chamber fluid infusion, consequently, the utility model discloses an oxygen treatment device self possesses the fluid infusion function, and this is favorable to prolonging the effective on-duty time of anode portion and negative pole portion.

Further, the utility model discloses an oxygen processing apparatus and refrigerator that has it because oxygen processing apparatus still has the fluid infusion container that is used for to fluid infusion chamber fluid infusion, utilizes fluid infusion chamber and fluid infusion container to combine together and forms dual liquid supply portion, can improve oxygen processing apparatus's the liquid capacity that holds to the liquid level that makes oxygen processing apparatus's stock solution intracavity is in higher level all the time.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic block diagram of an oxygen treatment device according to one embodiment of the present invention;

FIG. 2 is a schematic block diagram of an oxygen treatment device according to another embodiment of the present invention;

FIG. 3 is a schematic block diagram of a level switch of an oxygen treatment device according to one embodiment of the present invention;

FIG. 4 is a schematic exploded view of the level switch of the oxygen treatment device shown in FIG. 3;

FIG. 5 is a schematic perspective view of a level switch of the oxygen treatment device shown in FIG. 3;

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

Detailed Description

Fig. 1 is a schematic structural view of an oxygen treatment device 10 according to an embodiment of the present invention. The oxygen treatment device 10 of the present embodiment is for installation in a refrigerator 1 to regulate the oxygen concentration in the storage space of the refrigerator 1.

To facilitate the illustration of the internal structure, fig. 1 is a perspective view. The oxygen treatment device 10 may generally include a cathode section 110, an anode section 120, and a barrier section 130.

The cathode portion 110 is used to consume oxygen through an electrochemical reaction under the action of an electrolysis voltage. The anode part 120 serves to generate oxygen through an electrochemical reaction under the action of an electrolysis voltage. The barrier 130 is disposed between the anode 120 and the cathode 110, and serves to block the anode 120 and the cathode 110 from diffusing oxygen generated from the anode 120 into the cathode 110.

That is, the barrier section 130 separates the space in which the cathode section 110 is located and the space in which the anode section 120 is located into two spaces that do not communicate with each other, thereby preventing gas exchange between the two spaces. For example, the barrier 130 may be a gas barrier film, or may have another structure such as a porous mesh film, a nuclear pore film, or a nonwoven fabric having a specific pore diameter, as long as the function of preventing gas from penetrating therethrough is achieved. The cathode portion 110 and the anode portion 120 may be a cathode electrode and an anode electrode, respectively, and perform a reduction reaction and an oxidation reaction, respectively.

The utility model discloses an oxygen treatment device 10, because be provided with separation portion 130 between anode portion 120 and the negative pole portion 110, this separation portion 130 has played the effect that prevents the oxygen that anode portion 120 produced from spreading to negative pole portion 110 through separation anode portion 120 and negative pole portion 110 to can promote the directional output of anode portion 120 produced oxygen, also can avoid negative pole portion 110 because of utilizing the oxygen from anode portion 120 to carry out electrochemical reaction and lead to oxygen treatment device 10 unable oxygen consumption exterior space's oxygen, consequently, the utility model discloses an oxygen treatment device 10 and refrigerator 1 possess higher oxygen consumption efficiency and oxygen suppliment efficiency.

Through set up separation portion 130 between positive pole portion 120 and negative pole portion 110 to make positive pole portion 120 and negative pole portion 110 carry out the oxygen suppliment reaction respectively and consume the oxygen reaction, can make oxygen processing apparatus 10 can supply oxygen to certain exterior space, can consume the oxygen of another exterior space again, consequently, the utility model discloses an oxygen processing apparatus 10 can utilize simple structure to build out low oxygen fresh-keeping atmosphere and high oxygen fresh-keeping atmosphere simultaneously. When the oxygen treatment device 10 of the present invention is applied to the refrigerator 1, it is no longer necessary to separately install the oxygen removal module for consuming oxygen and the oxygen supply module for supplying oxygen.

Although the oxygen treatment device 10 of the present invention has both an oxygen consuming function and an oxygen supplying function, it is not always necessary to simultaneously perform the oxygen consuming operation and the oxygen supplying operation when applied to the refrigerator 1. The oxygen consuming function and the oxygen supplying function of the oxygen treatment device 10 may be selectively activated by a user or an engineer according to actual use requirements. For example, when the oxygen consumption function needs to be activated, the cathode portion 110 may be brought into air flow communication with the space to be deoxygenated, and when the oxygen supply function needs to be activated, the anode portion 120 or the exhaust port 201 of the oxygen processing device 10 may be brought into air flow communication with the space to be oxygenated.

In some alternative embodiments, the oxygen treatment device 10 may further include a housing 200 having an opening (not shown) formed therein. Fig. 1 is a side view showing the cathode portion 110 positioned at the opening of the case 200.

The cathode portion 110 is disposed at the opening to define a reservoir chamber for containing electrolyte together with the case 200. The blocking portion 130 is disposed in the liquid storage cavity and divides the liquid storage cavity into a first subspace 211 and a second subspace 212. The first subspace 211 communicates with the cathode portion 110, and the anode portion 120 is disposed in the second subspace 212.

For example, the housing 200 may have a substantially flat rectangular parallelepiped shape, and one of the side walls of the housing 200 may be opened to form the opening. The blocking portion 130 may be disposed in the liquid storage cavity in parallel with the sidewall of the opening at an interval, so as to divide the liquid storage cavity into a first subspace 211 communicating with the opening and a second subspace 212 not communicating with the opening. Since the cathode portion 110 is closed at the opening, it is also communicated with the first subspace 211. The anode part 120 is disposed in the second subspace 212.

With the above-described structure, the cathode part 110 can be directly exposed to the outside environment of the casing 200 to be easily contacted with the air in the outside environment of the casing 200, which improves the contact efficiency of the cathode part 110 with oxygen in the outside air without installing other gas guide structures to transfer oxygen to the cathode part 110.

In the case of energization, the cathode portion 110 serves to consume oxygen through an electrochemical reaction. For example, oxygen in the air may undergo a reduction reaction at the cathode portion 110, that is: o is ₂ +2H ₂ O+4e ^- →4OH ^- . OH generated from the cathode portion 110 ^- An oxidation reaction may occur at the anode portion 120 and oxygen is generated, that is: 4OH ^- →O ₂ +2H ₂ O+4e ^- . The oxygen may be vented through a vent 201 in the housing 200.

In some alternative embodiments, the blocking portion 130 is a porous mesh membrane for allowing the electrolyte to permeate and preventing oxygen bubbles from permeating, wherein the oxygen bubbles are formed when the oxygen generated by the anode portion 120 flows in the electrolyte. That is, the first subspace 211 where the cathode portion 110 is located and the second subspace 212 where the anode portion 120 is located are not completely isolated, and the electrolyte can freely flow in both subspaces.

The inventor found that a large number of tiny oxygen bubbles are generated in the oxygen evolution process of the anode part 120, and the tiny oxygen bubbles are not easy to break and polymerize into large bubbles, so that the tiny oxygen bubbles are not easy to rapidly precipitate from the electrolyte, but form a white mist gas-liquid mixture with the electrolyte, and a part of the oxygen bubbles contact with the cathode part 110, adhere to the catalytic film of the cathode part 110, enter the hydrophobic pores, and participate in the electrochemical reaction of the cathode part 110 again as a reactant, so that the consumption capacity of the cathode part 110 for oxygen in the ambient air outside the casing 200 is reduced, and the oxygen consumption capacity of the oxygen treatment device 10 is also reduced.

By spacing the second subspace 212 where the anode portion 120 is located and the first subspace 211 where the cathode portion 110 is located by the porous mesh film, oxygen bubbles can be prevented from diffusing to the first subspace 211 where the cathode portion 110 is located, and influence on free circulation of the electrolyte can be avoided.

The electrolyte is an acidic aqueous solution or an alkaline aqueous solution. In some alternative embodiments, the pore size of the porous reticulated film is smaller than the diameter of the oxygen bubbles and larger than the diameter of the water molecules. For example, the pore size of the porous mesh-like separator is 1mm or less, and may be 0.9mm, 0.8mm or 0.7 mm.

In some alternative embodiments, the anode portion 120 is a nickel mesh or a titanium mesh. For example, the mesh may be a nickel mesh or a titanium mesh of 1 to 400 mesh, and may be substantially plate-shaped or flat plate-shaped. The use of a nickel mesh or a titanium mesh as the anode section 120 is advantageous in increasing the flow rate of ions, for example, OH generated from the cathode section 110 ^- Or HO ^2- Can freely pass through the anode part 120, so that the anode part 120 is easily exposed to high concentration of OH ^- Or HO ^2- This facilitates an increase in the rate at which the anode portion 120 undergoes the electrochemical reaction.

In some alternative embodiments, the cathode portion 110 has a catalytic film. The catalytic film is made from the precursor by a hot pressing process. And the precursor comprises carbon-supported silver particles and carbon-supported manganese dioxide particles. The carbon-supported silver particles and the carbon-supported manganese dioxide particles are used as precursors to carry out hot pressing treatment, and the formed catalytic film contains silver and manganese dioxide as composite catalysts, so that the electrochemical reaction rate of the cathode part 110 can be remarkably improved.

The carbon support may be activated carbon. For example, the manganese dioxide catalyst content may be 15% to 40% of the activated carbon support content, and the silver catalyst content may be 15% to 40% of the activated carbon support content. In some embodiments, the precursor of the catalytic film may further include polytetrafluoroethylene and acetylene black. The precursor is obtained by mixing polytetrafluoroethylene, acetylene black, activated carbon-loaded silver and activated carbon-loaded manganese dioxide under a preset condition according to a preset proportion and a preset sequence.

The acetylene black plays a conductive role and can reduce the impedance of the whole catalytic membrane. Polytetrafluoroethylene is hydrophobic. In the autoclave process, the ptfe may form a porous structure, may allow gas to enter the inside of the cathode portion 110, and may prevent electrolyte from penetrating.

In some embodiments, the cathode portion 110 can also include a current collector mesh and two water-resistant gas-permeable membranes. For example, the current collecting mesh may be a titanium mesh or a nickel mesh disposed on one side of the catalytic membrane. The first waterproof breathable film is arranged between the current collecting net and the catalytic film, and the second waterproof breathable film is arranged on one side of the current collecting net, which faces away from the catalytic film.

Fig. 2 is a schematic structural view of an oxygen treatment device 10 according to another embodiment of the present invention. Fig. 2 is a front view. To facilitate the illustration of the internal structure, fig. 2 is a perspective view.

In some alternative embodiments, the interior of the housing 200 further defines a fluid replenishment chamber 220 located to one side of the reservoir and in communication with the reservoir for replenishing the reservoir with fluid.

That is, the housing 200 of the present embodiment has a fluid replenishing chamber 220 and a fluid reservoir chamber therein. The liquid storage chamber serves as a place for performing an electrochemical reaction, and the liquid replenishing chamber 220 serves as a liquid supply portion of the liquid storage chamber. The type of the liquid contained in the fluid replenishing cavity 220 can be determined according to the type of the electrochemical reaction, and is generally the substance consumed by the electrochemical reaction. For example, when the electrochemical reaction is water electrolysis, the liquid in the fluid infusion chamber 220 is water.

By defining the liquid storage cavity and the liquid replenishing cavity 220 in the housing 200 of the oxygen treatment device 10, assembling the anode part 120, the cathode part 110 and the barrier part 130 in the liquid storage cavity, and communicating the liquid replenishing cavity 220 with the liquid storage cavity, the liquid replenishing cavity 220 of the oxygen treatment device 10 can be used for replenishing liquid to the liquid storage cavity, so that the oxygen treatment device 10 has a liquid replenishing function.

Because the liquid storage cavity and the liquid supplementing cavity 220 are integrated in the shell 200, an integrated liquid supplementing-consuming structure is formed, the structure of the whole device is greatly simplified, the number of necessary parts is reduced, and for example, a pipeline structure for communicating the liquid supplementing cavity 220 with the liquid storage cavity can be omitted. And since the fluid replacement process can be performed inside the case 200, it is advantageous to improve the safety of the fluid replacement process.

By temporarily storing a specific amount of liquid in the liquid replenishing cavity 220, the liquid replenishing requirements of the cathode portion 110 and the anode portion 120 can be met within a certain range, and the problem that the oxygen treatment device 10 cannot normally work due to insufficient electrolyte is reduced or avoided, which is beneficial to improving the working performance of the oxygen treatment device 10.

Because the liquid storage cavity and the liquid supplementing cavity 220 form an integrated liquid supplementing-liquid consuming structure, the shell 200 with a specific spatial layout structure can be obtained through a forming process, the process is simple, compared with a split type liquid supplementing structure, the complicated assembling process is omitted, and the sealed communication between the liquid storage cavity and the liquid supplementing cavity 220 is ensured.

The interior of the housing 200 has a partition 400 that divides the interior space of the housing 200 into a fluid reservoir chamber and a fluid replenishment chamber 220. For example, the partition 400 may be a partition that may be formed inside the case 200 through a molding process.

The partition 400 is provided with a communication port 410 for communicating the fluid replenishing chamber 220 with the fluid storage chamber. The liquid in the fluid infusion chamber 220 can flow into the fluid storage chamber through the communication port 410 to infuse the fluid storage chamber.

The partition 400 is inclined and extended at a predetermined angle from the vertical direction, so that the liquid storage chamber is gradually enlarged from the bottom to the top, and the liquid storage chamber and the liquid replenishing chamber 220 are horizontally arranged in parallel. The liquid storage cavity is arranged from bottom to top in a gradually expanding mode, so that the floating movement of bubbles is facilitated, and oxygen generated by the anode part 120 can be discharged quickly. In other embodiments, the partition 400 may also be vertically disposed, which may simplify the molding process of the case 200.

The communication port 410 is located at the bottom section of the partition 400, which allows the liquid in the fluid infusion chamber 220 to flow through the communication port 410 and into the fluid reservoir chamber by its own weight. The liquid flowing from the liquid supplementing cavity 220 to the liquid storage cavity does not need to apply driving force by means of driving modules such as pumps, and the liquid supplementing process can be automatically carried out.

It should be noted that the terms "vertical", "horizontal" and the like for indicating directions or positional relationships are based on the directions or positional relationships in the use state, which are only for convenience of description, and do not indicate or imply that the described device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Fluid infusion port (not shown) is formed in housing 200 for communicating fluid infusion chamber 220 with the environment external to housing 200 to allow fluid from the environment external to housing 200 to flow into fluid infusion chamber 220. The fluid infusion port may be located at the top of housing 200, for example, may be located on a top wall for enclosing fluid infusion chamber 220. As shown in FIG. 2, the portion contacting the top end of the switch body 320 of the liquid level switch 300 is the fluid infusion port. In some alternative embodiments, the fluid infusion port may also be located inside the housing 200, and the interior of the housing 200 is formed with a buffer zone that communicates the fluid infusion port with the environment outside the housing 200.

In some embodiments, since the casing 200 is provided with the fluid infusion port, and the fluid infusion port communicates the fluid infusion chamber 220 with the external environment of the casing 200, when the amount of stored fluid in the fluid infusion chamber 220 decreases, fluid can be infused into the fluid infusion chamber 220 from the outside of the casing 200, so that the fluid infusion chamber 220 can continuously supply electrolyte to the fluid storage chamber, thereby improving the working performance of the anode portion 120 and the cathode portion 110.

In other alternative embodiments, the oxygen treatment device 10 may further include a fluid replacement container 500 and a level switch 300.

The fluid infusion space 510 for storing fluid is formed inside the fluid infusion container 500, and a fluid supply port is formed on the fluid infusion container 500 and is used for communicating with the fluid infusion port to infuse fluid into the fluid infusion cavity 220.

Because the oxygen treatment device 10 is provided with the fluid infusion container 500 for supplementing fluid to the fluid infusion cavity 220, and the fluid infusion cavity 220 and the fluid infusion container 500 are combined to form a double fluid supply part, the liquid storage capacity of the oxygen treatment device 10 can be improved, so that the liquid level in the liquid storage cavity of the oxygen treatment device 10 is always at a high level.

The liquid level switch 300 has a switch body disposed in the fluid infusion chamber 220, and is configured to open the fluid infusion port when the liquid level in the fluid infusion chamber 220 drops below the cathode portion 110, so that the fluid infusion container 500 infuses the fluid infusion chamber 220. Wherein, the liquid level falling below the cathode portion 110 means that the liquid level is equal to or lower than the highest point of the cathode portion 110.

The inventor has recognized that although the cathode portion 110 closes the opening of the casing 200, the cathode portion 110 is waterproof and air-permeable, and when the liquid level in the liquid storage chamber drops below the cathode portion 110, the cathode portion 110 is exposed to the outside of the electrolyte, and the air outside the casing 200 may enter the liquid storage chamber through the cathode portion 110, and the air inside the liquid storage chamber may flow to the outside of the cathode portion 110 through the cathode portion 110, which may interfere with the normal operation of the oxygen treatment device 10.

Therefore, the liquid level in the liquid replenishing cavity 220 and the liquid storage cavity is controlled by the liquid level switch 300, so that liquid can be replenished in time when the liquid level is reduced to the highest point of the cathode part 110, the liquid level in the liquid replenishing cavity 220 and the liquid storage cavity is improved, the cathode part 110 is ensured to be immersed in electrolyte all the time, and gas exchange at the cathode part 110 is prevented.

In some further embodiments, the cathode portion 110 may be lower than the anode portion 120, i.e. the highest point of the cathode portion 110 is lower than the highest point of the anode portion 120, which may reduce the risk of the cathode portion 110 being exposed to the outside of the electrolyte.

The level switch 300 may be electronic or may be mechanical. For example, when the liquid level switch 300 is electronic, the oxygen processing apparatus 10 may further include a liquid level monitoring component, which is in data connection with the liquid level switch 300, and is configured to monitor the liquid level in the fluid infusion chamber 220, and send an indication signal to the liquid level switch 300 when the liquid level in the fluid infusion chamber 220 falls below the cathode portion 110, so as to instruct the liquid level switch 300 to open the fluid infusion port.

The structure of the liquid level switch 300 will be further described by taking the mechanical liquid level switch 300 as an example.

Fig. 3 is a schematic structural view of a level switch 300 of the oxygen treatment device 10 according to an embodiment of the present invention, fig. 4 is a schematic exploded view of the level switch 300 of the oxygen treatment device 10 shown in fig. 3, and fig. 5 is a schematic perspective view of the level switch 300 of the oxygen treatment device 10 shown in fig. 3.

The liquid level switch 300 further comprises a float 320 fixedly connected to the switch body 310 or integrally formed with the switch body 310, for moving the switch body 310 by floating up or down around a shaft in the fluid infusion chamber. That is, the switch body 310 is "driven" by the float 320, and the power required to move the float 320 is determined by the buoyancy of the float within the fluid replacement chamber.

For example, a portion of the float 320 is immersed in the liquid, thereby subjecting the float 320 to the buoyancy of the liquid. When the liquid level in the fluid infusion chamber changes, the buoyancy force applied to the float 320 also changes, so that the resultant force of the buoyancy force and the gravity applied to the float 320 changes. For example, when the liquid level in the fluid infusion chamber decreases, the buoyancy exerted on the float 320 decreases, and if the resultant of the buoyancy and the gravity exerted on the float 320 is in a downward direction, the float 320 moves downward. Otherwise, the float 320 is caused to move upward. The float 320 may ascend or descend in a vertical direction, or may ascend or descend in a curve.

In some alternative embodiments, the float 320 is pivotably disposed. That is, the float 320 of the present embodiment does not perform a lifting motion along a straight line, but rises or falls in a manner of rotating around a shaft, and thus, the design only requires that the float 320 is pivotally connected to a fixed shaft, and a guide member with high dimensional accuracy is not required to be installed, and the present embodiment has the advantages of being exquisite in structure, simple in assembly process, and good in device reliability.

Because the float 320 can be arranged in a rotating manner around the shaft, the movement track is clear and definite, so that the float 320 and the switch body 310 of the embodiment can easily move along the clear and definite movement track, the reliability of the liquid level switch 300 is improved, and the problems of poor sealing and the like caused by the free movement of the float 320 are reduced or avoided.

The level switch 300 may further include a rotation shaft 340 and a connection 330.

Wherein the rotating shaft 340 is fixed to the fluid infusion chamber. For example, the rotating shaft 340 may be fixedly connected with the inner wall of the container of the fluid infusion chamber.

In some alternative embodiments, the rotating shaft 340 can also be detachably fixed to the fluid infusion chamber, which can adjust the height of the rotating shaft 340 according to actual needs, so as to adjust the height of the liquid level in the fluid infusion chamber where fluid infusion starts.

The connection member 330 is fixedly connected to the float 320 or is formed as a single body with the float 320, and has a shaft hole 341 formed thereon for inserting the rotation shaft 340 therein and rotatably engaged to achieve the rotatable connection. That is, the coupling 330 assembles the rotary shaft 340 and the float 320 into an organic whole so that the float 320 can rotate about the rotary shaft 340.

The shaft hole 341 is formed in the connecting member 330, and the rotary shaft 340 is rotatably engaged with the shaft hole 341, so that the float 320 can be pivotally assembled to the rotary shaft 340, and the structure is delicate and the process is simple.

The switch body 310 has a rod shape. The connection member 330 is further formed with a mounting hole 342 into which a portion of the switch body 310 is inserted to achieve a fixed assembly. That is, a portion of the switch body 310 is fixedly coupled to the float 320 indirectly by being fixedly fitted with the coupling member 330. For example, a portion of the switch body 310 may be fitted into the mounting hole 342 of the connector 330 by interference fit.

The rotary shaft 340 and the switch body 310 are respectively assembled to the connection member 330 fixedly connected to the float 320 or integrated with the float 320, thereby forming the level switch 300 having strong structural integrity. The switch body 310 and the float 320 are located on the same side of the rotating shaft 340. The fact that the switch body 310 is located between the rotating shaft 340 and the float 320 means that the switch body 310 is located between the rotating shaft 340 and the float 320, which is a key for enabling the switch body 310 to move in the same direction as the float 320 according to the liquid level of the inner space of the fluid infusion chamber, and a larger force arm ratio can be obtained.

In this embodiment, the central axis of the rotating shaft 340 extends in the horizontal direction and is perpendicular to the central longitudinal vertical plane of symmetry of the float 320. For example, for a cylindrical float 320, when the two bottom surfaces 321 of the float 320 are disposed opposite to each other in the horizontal direction, the central longitudinal vertical symmetry plane of the float 320 is the longitudinal central section of the float 320 extending in the vertical direction. In a case where the switch body 310 closes the fluid infusion port, a central axis of the mounting hole 342 extends in a vertical direction and is parallel to a central longitudinal vertical center line of the float 320, wherein the central longitudinal vertical center line of the float 320 is a longitudinal center line of a longitudinal center section of the float 320 extending in the vertical direction. The terms of orientation such as "horizontal" and "longitudinal" are relative to the actual usage status of the liquid level switch 300, and the longitudinal direction is substantially vertical.

In some alternative embodiments, the float 320 is in the shape of a hollow cylinder. The cylinder of the float 320 of the present embodiment is a hollow structure, which can further increase the buoyancy (the overall density is less than the liquid density). The central axis of the float 320 is parallel to the central axis of the shaft hole 341. Wherein the central axes of the floats 320 are respectively collinear with the centers of the two bottom surfaces 321. Since the central axis of the shaft hole 341 extends in the horizontal direction, the central axis of the float 320 also extends in the horizontal direction, and the two bottom surfaces 321 of the float 320 are disposed opposite to each other in the horizontal direction.

In some alternative embodiments, the connection 330 is a cantilever arm formed extending obliquely outward and upward from an upper side section of the cylinder side 322 of the float 320. Wherein "outwardly" refers radially outward of the cylinder sides 322.

The switch body 310 is a rod-shaped plug cover having a fitting portion 311 and a closing portion 312. Wherein the fitting portion 311 is a rod and is fixedly fitted to the mounting hole 342. The blocking portion 312 is a plug cover and is connected to the top of the mounting portion 311 for opening or closing the fluid infusion port. The plug may be cylindrical with a planar upper surface. Compare with the cooperation structure of traditional conical head stopper and water injection well choke, the gag of this embodiment has the advantage that the fault tolerance rate is high with the cooperation mechanism of lower annular flange, and the gag need not to carry out accurate alignment with the liquid outlet of lower annular flange, as long as the upper surface of gag can cover conical water nozzle mouth can. The closure of this embodiment is a unitary piece with the stem.

A central section of the inner wall of the mounting hole 342 extends radially inwardly to form a central annular flange 342 a. The stem diameter of the main body stem 311c of the fitting portion 311 is the same as the bore diameter of the central annular flange 342a so as to be inserted into the bore defined by the central annular flange 342 a. The fitting portion 311 also has upper and lower

annular bosses

311a and 311b extending radially outward from its body stem 311c, above and below the middle annular flange 342a, respectively, to limit the freedom of movement of the switch body 310 relative to the mounting hole 342.

By designing the hole structure of the mounting hole 342 and the rod structure and the plug structure of the switch body 310, the structural stability of the entire structure obtained by the fixed assembly between the switch body 310 and the mounting hole 342 can be improved.

In some alternative embodiments, the switch body 310 is made of an acid-resistant and alkali-resistant elastic material, such as epdm or viton, and the liquid supplementing port in sealing engagement with the switch body is pressed by elastic deformation of the switch body, so as to achieve sealing. The rotating shaft 340 is made of an acid and alkali resistant material, such as a chrome plated metal material, a ceramic material, or a plastic material. The float 320 may be made of acid and alkali resistant materials such as polytetrafluoroethylene or polytetramethylene adipamide.

Fig. 6 is a schematic structural view of the refrigerator 1 according to one embodiment of the present invention. The refrigerator 1 may generally include a cabinet 20 and an oxygen treatment device 10 as in any of the above embodiments. The interior of the case 20 defines a storage space. The oxygen processing device 10 is installed at the cabinet 20, and serves to consume oxygen in the storage space or to supply oxygen to the storage space. For example, the storage space may be multiple, the cathode portion may be in airflow communication with a certain storage space to reduce the oxygen content in the storage space, and the anode portion may be in airflow communication with another storage space to increase the oxygen content in the storage space.

The refrigerator 1 of the present embodiment is an electric appliance having a low-temperature storage function, and includes the refrigerator 1 in a narrow sense, and also includes a freezer, a storage cabinet, and other refrigerating and freezing apparatuses. The refrigerator 1 of the embodiment can rapidly build a low-oxygen fresh-keeping environment, inhibit the respiration of food materials such as fruits and vegetables, slow down physiological metabolism, prolong the fresh-keeping time, rapidly build a high-oxygen fresh-keeping environment, and provide a high-oxygen modified atmosphere for food materials such as meat and mushrooms.

The utility model discloses an oxygen treatment device 10 and refrigerator 1 that has it, because be provided with separation portion 130 between anode portion 120 and the negative pole portion 110, this separation portion 130 passes through separation anode portion 120 and negative pole portion 110, has played the effect that prevents the oxygen that anode portion 120 produced from to the diffusion of negative pole portion 110 to can promote the directional output of the produced oxygen of anode portion 120, also can avoid negative pole portion 110 to lead to the oxygen treatment device 10 can't consume the oxygen of exterior space because of utilizing the oxygen from anode portion 120 to carry out electrochemical reaction, consequently, the utility model discloses an oxygen treatment device 10 and refrigerator 1 possess higher oxygen consumption efficiency and oxygen suppliment efficiency.

Thus, 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 in detail herein, many other variations and modifications can be made to the invention consistent with the principles of the invention, which may be directly determined or derived from the disclosure of the present invention, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An oxygen treatment device characterized by comprising:

a cathode portion for consuming oxygen through an electrochemical reaction under the action of an electrolysis voltage;

an anode part for generating oxygen through an electrochemical reaction under the action of an electrolysis voltage; and

and the separation part is arranged between the anode part and the cathode part and is used for separating the anode part and the cathode part so as to prevent oxygen generated by the anode part from diffusing to the cathode part.

2. The oxygen treatment device according to claim 1, characterized by further comprising:

a housing having an opening formed therein; and is

The cathode part is arranged at the opening so as to define a liquid storage cavity for containing electrolyte together with the shell; the blocking part is arranged in the liquid storage cavity and divides the liquid storage cavity into a first subspace and a second subspace; and the first subspace is communicated with the cathode part, and the anode part is arranged in the second subspace.

3. Oxygen treatment device according to claim 1, characterized in that

The blocking part is a porous reticular diaphragm with the aperture being less than or equal to 1mm and is used for allowing electrolyte to permeate and preventing oxygen bubbles from permeating, wherein the oxygen bubbles are formed when oxygen generated by the anode part flows in the electrolyte.

4. Oxygen treatment device according to claim 1, characterized in that

The anode part is a nickel net or a titanium net.

5. Oxygen treatment device according to claim 1, characterized in that

The cathode part is provided with a catalytic film, and the catalytic film is made of a precursor through hot-pressing treatment; and the precursor comprises carbon-supported silver particles and carbon-supported manganese dioxide particles.

6. The oxygen processing device according to claim 2, characterized in that

The inside of casing still prescribes a limit to the fluid infusion chamber, is located one side in stock solution chamber, and with the stock solution chamber communicates with each other, in order to stock solution chamber fluid infusion.

7. Oxygen treatment device according to claim 6, characterized in that

The inner part of the shell is provided with a partition which divides the inner space of the shell into the liquid storage cavity and the liquid supplementing cavity; and the separator is provided with a communication port for communicating the liquid replenishing cavity and the liquid storage cavity.

8. Oxygen treatment device according to claim 7, characterized in that

The separator obliquely extends at a preset angle with the vertical direction, so that the liquid storage cavity is gradually enlarged from bottom to top, and the liquid storage cavity and the liquid supplementing cavity are horizontally arranged in parallel; and is provided with

The communication port is located at a bottom section of the partition.

9. Oxygen treatment device according to claim 6, characterized in that

The shell is provided with a fluid infusion port for communicating the fluid infusion cavity with the external environment of the shell;

the oxygen processing apparatus further includes:

the fluid infusion container is internally provided with a fluid infusion space for storing fluid, and is provided with a fluid supply port for communicating with the fluid infusion port so as to infuse fluid into the fluid infusion cavity; and

and the liquid level switch is provided with a switch body, is arranged in the fluid infusion cavity and is configured to open the fluid infusion port when the liquid level in the fluid infusion cavity is reduced below the cathode part, so that the fluid infusion container can infuse fluid into the fluid infusion cavity.

10. A refrigerator characterized by comprising:

an oxygen treatment device as claimed in any one of claims 1 to 9.