WO2023155665A1

WO2023155665A1 - Refrigerator and electrolytic deoxygenization apparatus thereof

Info

Publication number: WO2023155665A1
Application number: PCT/CN2023/073572
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: CN218096834U

Abstract

An electrolytic deoxygenization apparatus (40), comprising: a reactor (100), provided with at least one reaction space (110) opened towards one side; and at least one electrolysis deoxygenization unit (200), the electrolysis deoxygenization unit (200) being assembled in the reaction space (110) in a one-to-one correspondence mode, and used for consuming oxygen outside the electrolytic deoxygenization apparatus (40) by means of electrochemical reaction under the action of electrolytic voltage, and each electrolysis deoxygenization unit (200) comprising: a cathode membrane assembly (210), provided at an open position of the reaction space (110) to seal the reaction space (110); and an anode plate (220), provided in the reaction space (110) and fixed to the cathode membrane assembly (210) at an interval. The electrolytic deoxygenization apparatus (40) can stably keep the interval between the anode plate (220) and the cathode membrane assembly (210), and the assembly efficiency is high.

Description

Refrigerator and its electrolytic deoxygenation device

technical field

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

Background technique

For the electrochemical reaction device used to reduce the oxygen inside the refrigerator through electrochemical reaction, it generally needs to cooperate with negative and positive electrode plates. Usually, the negative and positive electrode plates are arranged at intervals inside the electrochemical reaction device, so as to generate corresponding chemical reactions on the surfaces of the respective electrode plates.

Usually, when installing the negative and positive electrode plates, they are installed at intervals inside the electrochemical reaction device. However, this method is not only complicated in process, but also has poor fixing effect, which will easily lead to changes in the interval between the two, thus affecting the reaction. conduct.

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 device thereof.

A further object of the present invention is to keep the anode plate and the cathode membrane assembly at a stable interval and improve assembly efficiency.

Another further object of the present invention is to fix the anode plate and the cathode membrane assembly.

In particular, the present invention provides an electrolytic deoxygenation device, comprising: a reactor with at least one reaction space open to one side; The space is used to consume the oxygen outside the electrolytic oxygen removal device through electrochemical reaction under the action of electrolytic voltage; and each electrolytic oxygen removal unit includes: a cathode membrane assembly arranged at the opening of the reaction space to seal the reaction space; an anode The plate is arranged in the reaction space and is fixed at intervals from the cathode membrane assembly.

Optionally, the cathode membrane assembly includes: a fixed frame, fixed to the opening of the reaction space, and the middle part is a hollow area, and the inner side of the fixed frame is provided with an installation groove along the circumferential direction; the cathode membrane group, the periphery of the cathode membrane group is fixed on Fit into the groove so that it can be fixed in the center of the fixed frame.

Optionally, the side of the fixing frame facing the reaction space is provided with a plurality of fixing pins, and the anode plate is provided with a plurality of fixing holes, and the fixing pins are matched with the fixing holes in a one-to-one correspondence to fix the cathode membrane assembly and the anode plate.

Optionally, each fixing pin also includes a supporting section connected in a direction away from the fixing frame and The positioning section is used to cooperate with the fixing hole, and the supporting section is used to form a space between the cathode membrane assembly and the anode plate.

Optionally, each electrolytic deoxygenation unit further includes: an anode connection sheet, which is formed on the anode plate and extends out of the reaction space, so as to be connected to an external power supply.

Optionally, an avoidance groove is provided on the side of the fixed frame facing the reaction space to avoid the anode contact piece so that it protrudes from the avoidance groove into the reaction space.

Optionally, the reactor is flat, and its wider side is recessed inwardly to form an encapsulation space, and the inner wall of the encapsulation space is inwardly indented to form at least one reaction space; when the cathode membrane assembly is installed in the opening of the reaction space, it is in the within the package space.

Optionally, an encapsulation layer is formed in the encapsulation space to seal the gap between the cathode membrane assembly and the reaction space.

Optionally, the encapsulation layer is encapsulation glue.

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

In the electrolytic deoxygenation device of the present invention, since the cathode membrane assembly is arranged in the open place of the reaction space, and the anode plate and the cathode membrane assembly are fixed at intervals, after assembly, the anode plate and the cathode membrane assembly are integrated, and the anode plate can be stably Keep a distance from the cathode membrane assembly to ensure efficient reaction. In addition, this assembly method is simple, efficient and robust.

Furthermore, in the electrolytic oxygen removal device of the present invention, the side of the fixing frame facing the reaction space is provided with a plurality of fixing pins, and the anode plate is provided with a plurality of fixing holes, and the fixing pins and the fixing holes are matched one by one to fix the cathode Membrane modules and anode plates.

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 diagram of an electrolytic deoxygenation device in a refrigerator according to an embodiment of the present invention;

Fig. 3 is an exploded view of an electrolytic deoxidizer in a refrigerator according to an embodiment of the present invention;

Fig. 4 is a cross-sectional view of an electrolytic deoxidizer in a refrigerator according to an embodiment of the present invention;

Fig. 5 is a schematic partial enlarged view of place A in Fig. 4;

Fig. 6 is a schematic diagram of a fixed frame in an electrolytic oxygen removal device according to an embodiment of the present invention;

Fig. 7 is a schematic partial enlarged view of place B in Fig. 6;

Fig. 8 is the schematic diagram of the reactor in the electrolytic oxygen removal device according to one embodiment of the present invention;

Fig. 9 is a sectional view of the reactor in the electrolytic oxygen removal device according to one embodiment of the present invention, which shows an oxygen outlet;

Fig. 10 is a cross-sectional view of the reactor in the electrolytic oxygen removal device according to an embodiment of the present invention, which shows a liquid replenishment nozzle.

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 some embodiments, the refrigerator 1 can also include an electrolytic deoxygenation device 40, which can be installed in the inner tank or the drawer assembly 30, so as to separate the oxygen in the air flowing through it through electrolytic reaction. gas, and the nitrogen gas is left in the storage compartment of the inner tank or in the drawer body, so as to realize the preservation and storage of food.

Specifically, the electrolytic deoxygenation device 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 install the electrolytic deoxygenation device 40 according to the actual situation after knowing the technical solution of this embodiment, which will not be listed here.

Referring to Fig. 2 to Fig. 5, Fig. 2 is a schematic diagram of the electrolytic deoxygenation device 40 in the refrigerator 1 according to one embodiment of the present invention, and Fig. 3 is an exploded view of the electrolytic deoxygenation device 40 in the refrigerator 1 according to one embodiment of the present invention, Fig. 4 is a cross-sectional view of the electrolytic deoxygenation device 40 in the refrigerator 1 according to an embodiment of the present invention, and Fig. 5 is a schematic partial enlarged view at point A in Fig. 4 .

In some embodiments, the electrolytic deoxygenation device 40 includes a reactor 100 and at least one electrolytic deoxygenation unit 200 . The reactor 100 has at least one reaction space 110 open to one side, and the electrolytic deoxygenation unit 200 is assembled in the reaction space 110 in a one-to-one correspondence, and is used to consume the external oxygen of the electrolytic deoxygenation device 40 through an electrochemical reaction under the action of the electrolytic voltage. oxygen. Each electrolytic deoxygenation unit 200 can also include a cathode membrane assembly 210 and an anode plate 220, the cathode membrane assembly 210 is arranged in the opening of the reaction space 110 to seal the reaction space 110, the anode plate 220 is arranged in the reaction space 110, and The cathode membrane assemblies 210 are fixed at intervals.

The reaction space 110 of the reactor 100 can be used to hold the electrolytic solution (such as sodium hydroxide solution, etc.) for the electrolysis reaction. In the case of electrification, the oxygen in the air can undergo a reduction reaction at the cathode membrane assembly 210 , namely: O ₂ +2H ₂ O+4e ⁻ →4OH ⁻ . The OH- generated by the cathode membrane assembly 210 can be oxidized at the anode plate 220 to generate oxygen, namely: 4OH ⁻ →O ₂ +2H ₂ O+4e ⁻ .

The inventor realized that a certain distance should be firmly maintained between the cathode membrane assembly 210 and the anode plate 220, so as to avoid the low reaction efficiency caused by too large a distance, and to avoid that the oxygen produced by the anode plate 220 cannot be released in time due to the too small distance. discharge, affecting the reaction process.

In this embodiment, since the cathode membrane assembly 210 is arranged in the opening of the reaction space 110, the anode plate 220 and the cathode membrane assembly 210 are fixed at intervals, so after assembly, the anode plate 220 and the cathode membrane assembly 210 are integrated, and the anode The plate 220 can be firmly spaced from the cathode membrane assembly 210 to ensure efficient reaction.

In addition, since the cathode membrane assembly 210 and the anode plate 220 are fixed, the two can be pre-fixed during assembly, and then the assembly formed by the two can be fixed on the reaction space 110 of the reactor 100. This assembly method Simple, efficient, and robust.

Referring to Fig. 3 and Fig. 6, Fig. 6 is a solid state in an electrolytic deoxidizer 40 according to an embodiment of the present invention. A schematic diagram of the fixed frame 212. Further, the cathode membrane assembly 210 may also include a fixed frame 212 and a cathode membrane group 214. The fixed frame 212 is fixed at the opening of the reaction space 110, and its middle is a hollow area. The groove 216 , the periphery of the cathode membrane group 214 is fixed in the installation groove 216 , so that it is fixed in the center of the fixing frame 212 .

Further, the cathode membrane group 214 also includes a catalytic layer, a first waterproof and gas-permeable layer, a conductive layer and a second waterproof and gas-permeable layer arranged in sequence. The catalyst layer can use noble metal or rare metal catalyst, such as metal platinum, metal gold, metal silver, metal manganese or metal rubidium and so on. The first waterproof and gas-permeable layer and the second waterproof and gas-permeable layer can be waterproof and gas-permeable membranes, so that the electrolyte cannot seep out of the reaction space 110 , and air can enter the reaction space 110 through the first waterproof and gas-permeable layer and the second waterproof and gas-permeable layer. The conductive layer can be made into a corrosion-resistant metal current collector, such as metal nickel, metal titanium, etc., so that it not only has better conductivity, corrosion resistance and support strength.

The shape of the fixing frame 212 matches the opening of the reaction space 110 and can be fixed with the reactor 100 by heat welding. The inner side of the fixed frame 212 is provided with an installation groove 216 along the circumference, and the periphery of the cathode membrane group 214 is fixed in the installation groove 216, so that the cathode membrane group 214 can be tightened in the center of the fixed frame 212 to firmly provide a front for the reaction space 110. wall.

Referring to FIG. 4 to FIG. 7 , FIG. 7 is a schematic partial enlarged view at B in FIG. 6 . Further, the side of the fixing frame 212 facing the reaction space 110 is provided with a plurality of fixing pins 218, and the anode plate 220 is provided with a plurality of fixing holes 222, and the fixing pins 218 are matched with the fixing holes 222 one by one to fix the cathode membrane Assembly 210 and anode plate 220 .

Specifically, four corners of the anode plate 220 respectively define a fixing hole 222 , and the four corners of the fixing frame 212 respectively form a corresponding fixing pin 218 . When installing, align the fixing pin 218 with the fixing hole 222 and insert it into the fixing hole 222 to complete the fixing of the cathode membrane assembly 210 and the anode plate 220, and then install the assembly formed by the two in the reaction space of the reactor 100 within 110.

In addition, the combination of the fixing pin 218 and the fixing hole 222 is also conducive to positioning the relative position of the cathode membrane assembly 210 and the anode plate 220 to ensure that the two will not be misaligned, thereby ensuring efficient reaction.

Referring to FIG. 4 to FIG. 7 , further, each fixing pin 218 may further include a supporting section 218a and a positioning section 218b connected in a direction away from the fixing frame 212, and the positioning section 218b is used to cooperate with the fixing hole 222, The supporting section 218 a is used to separate the cathode membrane assembly 210 from the anode plate 220 .

Specifically, the supporting section 218a and the positioning section 218b are arranged coaxially, and the supporting section 218a The diameter of the positioning section 218b is larger than the diameter of the positioning section 218b. When the cathode membrane assembly 210 and the anode plate 220 are fixed, the positioning section 218b matches the fixing hole 222, and the anode plate 220 abuts against the support section 218a, so that the cathode membrane A stable interval is formed between the assembly 210 and the anode plate 220 .

Further, an interference fit can also be set between the positioning section 218b and the fixing hole 222, so that the connection between the cathode membrane assembly 210 and the anode plate 220 is more stable, preventing the anode plate 220 from being dislocated and falling off from the cathode membrane assembly 210 And so on.

Referring to Fig. 3 and Fig. 6, in some embodiments, each electrolytic deoxygenation unit 200 may also include an anode contact piece 230, the anode contact piece 230 is formed on the anode plate 220, and extends out of the reaction space 110, so that the external Power is connected.

The anode contact piece 230 can be integrally formed with the anode plate 220, and the anode contact piece 230 is formed on the top of the anode plate 220, and the anode plate 220 is inside the reaction space 110 after the installation is completed, and extends from the reaction space 110 of the reactor 100. After being released, it is connected to the positive pole of the external power supply, so that the anode plate 220 is positively charged, and then the oxidation reaction occurs.

Referring to FIG. 3 and FIG. 6 , further, the fixed frame 212 is provided with an avoidance groove 219 on the side facing the reaction space 110 to avoid the anode contact piece 230 so that it extends out of the reaction space 110 from the avoidance groove 219 .

When the cathode membrane assembly 210 is installed at the opening of the reaction space 110 , the fixing frame 212 and the reaction space 110 are in a sealed state. The side of the fixed frame 212 facing the reaction space 110 is provided with an avoidance groove 219. When the cathode membrane assembly 210 is installed at the opening of the reaction space 110, a gap is reserved between the fixed frame 212 and the reaction space 110, so that it is located inside the reaction space 110. The anode contact piece 230 extending from the anode plate 220 can extend out of the reaction space 110 from the gap, so as to be conveniently connected with an external power source. In addition, the escape groove 219 can also function to fix the anode contact piece 230 to prevent it from shaking left and right, resulting in poor power supply.

Referring to FIG. 2 , FIG. 3 and FIG. 8 , FIG. 8 is a schematic diagram of a reactor 100 in an electrolytic deoxygenation device 40 according to an embodiment of the present invention. Further, the reactor 100 is flat, and its wider side is recessed inwardly to form an encapsulation space 120, and the inner wall of the encapsulation space 120 is inwardly indented to form at least one reaction space 110. When the cathode membrane assembly 210 is installed in the opening of the reaction space 110 When it is in the package space 120 .

The cathode membrane assembly 210 is fixedly arranged at the opening of the reaction space 110 , it not only participates in the reaction as the cathode of the electrolytic oxygen removal device 40 , but also serves as the front wall of the reaction space 110 . When the cathode membrane assembly 210 is installed in the opening of the reaction space 110, its front end will not protrude from the packaging space 120, This can improve the aesthetics of the electrolytic deoxygenation device 40 and facilitate installation.

Further, an encapsulation layer (not shown in the figure) is formed in the encapsulation space 120 to seal the gap between the cathode membrane assembly 210 and the reaction space 110 .

Specifically, the encapsulation can be encapsulation glue. Encapsulation glue refers to a type of electronic glue or adhesive that can seal, encapsulate or pott some components. After potting, it can play the role of waterproof, moisture-proof, shockproof, dustproof, heat dissipation, and confidentiality.

When assembling, the anode plate 220 is first installed on the cathode membrane assembly 210 to form a whole, and then the integrated structure formed by the two is installed on the reaction space 110, so that the anode plate 220 is in the reaction space 110, and the cathode membrane assembly 210 covers the opening of the reaction space 110 , and finally inject the melted encapsulation glue into the encapsulation space 120 of the reactor 100 , and form the final electrolytic deoxygenation device 40 after being cooled and solidified.

In addition, since the cathode membrane assembly 210 is installed in the opening of the reaction space 110 , it is in the packaging space 120 , so this structure also facilitates packaging the cathode membrane assembly 210 with the packaging layer.

Referring to FIG. 2 , FIG. 3 and FIG. 8 , in some embodiments, there may be multiple reaction spaces 110 on the reactor 100 , and the multiple reaction spaces 110 are arranged at intervals. Correspondingly, there are also multiple electrolytic deoxygenation units 200 , which are installed in the reaction space 110 in a one-to-one correspondence.

Referring to FIG. 9 , FIG. 9 is a cross-sectional view of the reactor 100 in the electrolytic deoxygenation device 40 according to an embodiment of the present invention, which shows the oxygen outlet 140 . Further, the reactor 100 is also provided with an oxygen outlet 140 at the top of each reaction space 110 , so as to discharge the oxygen generated on the anode plate 220 out of the reaction space 110 .

Referring to FIG. 9 , further, the reactor 100 further defines a liquid storage area 130 on the top of the plurality of reaction spaces 110 , and the liquid storage area 130 can contain electrolyte to supply liquid to the plurality of reaction spaces 110 .

Referring to Fig. 9, in addition, the oxygen discharge port 140 can also be arranged on the bottom wall of the liquid storage area 130, since there is electrolyte in the liquid storage area 130, therefore, this part of the electrolyte can also play a role not only in the oxygen discharge port 140 is liquid-sealed to prevent external air from entering the reaction space 110 through the oxygen outlet 140, and the liquid storage area 130 can also collect and filter the gases generated in each reaction space 110. When it is necessary to guide these gases, it is only necessary to use It only needs to connect an air duct to the external environment, and the structure is simple and easy to realize.

Referring to FIG. 10 , FIG. 10 is a cross-sectional view of the reactor 100 in the electrolytic deoxygenation device 40 according to an embodiment of the present invention, which shows a liquid replenishment nozzle 150 . Further, the reactor 100 has a liquid replenishment nozzle 150 arranged in the liquid storage area 130 and used to communicate with the liquid storage area 130 and the reaction space 110. The liquid replenishment nozzle 150 can be set to have a certain height, so that the liquid storage area can The liquid level in 130 is lower than the filling nozzle When the height of 150 is reached, the liquid replenishment is stopped, thereby ensuring that the liquid level of a certain height is always maintained in the liquid storage area 130, and the oxygen discharge port 140 can be liquid-sealed at any time.

Referring to Fig. 2, Fig. 3 and Fig. 8, further, the top of the liquid storage area 130 can also be provided with a total oxygen discharge port 160 and a total liquid replenishment port 170, and the oxygen discharged from each reaction space 110 collected in the liquid storage area 130 can be From the main oxygen exhaust port 160 to the external environment, from the main liquid replenishment port 170, liquid can be replenished into the liquid storage area 130, and from the liquid storage area 130, liquid can be replenished to each reaction space 110.

Referring to FIG. 8 , further, there is a communication port 180 in front of two adjacent reaction spaces 110 , and the communication port 180 can keep the liquid level between each reaction space 110 consistent.

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 oxygen removal device, comprising:

A reactor having at least one reaction space open towards one side;

At least one electrolytic deoxygenation unit, the electrolytic deoxygenation unit is installed in the reaction space one by one, and is used to consume the oxygen outside the electrolytic deoxygenation device through an electrochemical reaction under the action of electrolysis voltage; and

Each electrolytic deoxygenation unit includes:

a cathode membrane assembly arranged at the opening of the reaction space to seal the reaction space;

an anode plate, arranged in the reaction space, and fixed at intervals from the cathode membrane assembly;
The electrolytic deoxygenation device according to claim 1, wherein

The cathode membrane assembly includes:

The fixed frame is fixed to the opening of the reaction space, and the middle part is a hollow area, and the inner side of the fixed frame is provided with an installation groove along the circumferential direction;

The cathode membrane group, the periphery of the cathode membrane group is fixed in the installation groove so as to be fixed in the center of the fixing frame.
The electrolytic deoxygenation device according to claim 2, wherein

The side of the fixing frame facing the reaction space is provided with a plurality of fixing pins, and the anode plate is provided with a plurality of fixing holes, and the fixing pins are matched with the fixing holes one by one to fix the The cathode membrane assembly and the anode plate.
The electrolytic deoxygenation device according to claim 3, wherein

Each of the fixing pins also includes a supporting section and a positioning section connected in a direction away from the fixing frame, the positioning section is used to cooperate with the fixing hole, and the supporting section is used to make the The cathode membrane assembly is separated from the anode plate.
The electrolytic deoxidizer according to any one of claims 2-4, wherein

Each electrolytic deoxygenation unit also includes:

An anode connection piece, the anode connection piece is formed on the anode plate and extends out of the reaction space, so as to be connected to an external power supply.
The electrolytic deoxygenation device according to claim 5, wherein

A side of the fixing frame facing the reaction space is provided with an avoidance groove for avoiding the anode contact piece so that it extends out of the reaction space from the avoidance groove.
The electrolytic deoxygenation device according to any one of claims 1-6, wherein

The reactor is flat, and its wider side is recessed inwardly to form an encapsulation space, and the inner wall of the encapsulation space is inwardly indented to form at least one reaction space;

When the cathode membrane assembly is installed in the opening of the reaction space, it is in the packaging space.
The electrolytic deoxygenation device according to claim 7, wherein

An encapsulation layer is formed in the encapsulation space to seal the gap between the cathode membrane assembly and the reaction space.
The electrolytic deoxygenation device according to claim 8, wherein

The encapsulation layer is encapsulation glue.
A refrigerator, comprising the electrolytic deoxygenation device according to any one of claims 1 to 9.