CN220017835U

CN220017835U - Refrigerating and freezing device and oxygen treatment device thereof

Info

Publication number: CN220017835U
Application number: CN202321044439.5U
Authority: CN
Inventors: 苗建林; 姬立胜; 李春阳
Original assignee: Qingdao Haier Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-11-14
Anticipated expiration: 2033-04-28

Abstract

The utility model provides a refrigerating and freezing device and an oxygen treatment device thereof, wherein the oxygen treatment device comprises a shell and a cathode, an opening is formed on one side of the shell, the cathode is made of waterproof and breathable materials and is arranged at the opening, a first injection molding narrow edge which is coated on at least one side periphery of the cathode is formed on the inner edge of the opening in the injection molding process of the shell so as to fix the cathode, the shell and the cathode jointly define an electrochemical reaction bin for containing electrolyte, and the width of the first injection molding narrow edge is not less than 1mm. The utility model provides necessary assurance for fixing the cathode by limiting the width of the first injection molding narrow side.

Description

Refrigerating and freezing device and oxygen treatment device thereof

Technical Field

The utility model relates to an air-conditioning fresh-keeping technology, in particular to a refrigeration and freezing device and an oxygen treatment device thereof.

Background

The modified atmosphere fresh-keeping technology is a technology for prolonging the storage life of food by adjusting the components of ambient gas. Refrigerating and freezing devices with air-conditioning fresh-keeping functions are increasingly popular with consumers. Among the numerous gas components, oxygen is of great concern. The oxygen treatment device can treat oxygen in the working environment to generate oxygen-deficient gas or oxygen-enriched gas, thereby playing a role in regulating the oxygen content.

In the related art, an oxygen treatment device includes a housing, a cathode disposed on one side surface of the housing to define an electrolytic cell together with the housing, and an anode. The skilled person realizes that when the housing and the cathode are connected by injection molding, the width of the injection molded narrow side wrapping the periphery of the cathode has a great influence on the stability of the cathode, and thus further investigation of the width of the injection molded narrow side is necessary.

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

Disclosure of Invention

It is an object of the present utility model to overcome at least one of the drawbacks of the prior art and to provide an oxygen treatment device capable of ensuring stability of cathode fixation.

It is a further object of the present utility model to further improve the stability of the cathode fixation.

In particular, the present utility model provides an oxygen treatment device comprising: a housing, one side of which forms an opening; and a cathode made of waterproof and breathable material and arranged at the opening; the oxygen treatment device is configured to: forming a first injection molding narrow edge coated on at least one surface periphery of the cathode at the inner edge of the opening in the injection molding process of the shell so as to fix the cathode, and enabling the shell and the cathode to jointly define an electrochemical reaction bin for containing electrolyte; wherein the width of the first injection molding narrow side is configured to be not less than 1mm.

Optionally, the width of the first injection molding narrow side is configured according to the area of the cathode, and the specific relationship is as follows: if the area of the cathode is less than or equal to 200cm ² When the width of the first injection molding narrow side is configured to be not less than 1mm; if the area of the cathode is larger than 200cm ² And less than or equal to 300cm ² When the width of the first injection molding narrow side is configured to be not less than 1.2mm; if the area of the cathode is more than 300cm ² When the width of the first injection molding narrow side is configured to be not less than 1.5mm.

Optionally, the width of the first injection-molded narrow side is further configured according to the concentration of the electrolyte; if the area of the cathode is less than or equal to 200cm ² The specific relation is as follows: if the concentration of the electrolyte is less than or equal to 3mol/L, the width of the first injection molding narrow side is configured to be not less than 1mm; if the concentration of the electrolyte is more than 3mol/L and less than or equal to 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.1mm; if the concentration of the electrolyte is more than 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.2mm.

Optionally, the width of the first injection-molded narrow side is further configured according to the concentration of the electrolyte; if the area of the cathode is larger than 200cm ² And less than or equal to 300cm ² The specific relationship is as follows: if the concentration of the electrolyte is less than or equal to 3mol/L, the width of the first injection molding narrow side is configured to be not less than 1.2mm; if the concentration of the electrolyte is more than 3mol/L and less than or equal to 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.3mm; if the concentration of the electrolyte is more than 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.4mm.

Optionally, a firstThe width of the injection molding narrow side is further configured according to the concentration of the electrolyte; if the area of the cathode is more than 300cm ² The specific relationship is as follows: if the concentration of the electrolyte is less than or equal to 3mol/L, the width of the first injection molding narrow side is configured to be not less than 1.5mm; if the concentration of the electrolyte is more than 3mol/L and less than or equal to 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.6mm; if the concentration of the electrolyte is more than 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.7mm.

Optionally, the oxygen treatment device further comprises: the anode and the cathode are oppositely arranged in the electrochemical reaction bin, and a second injection molding narrow edge coated on the periphery of one surface of the anode is formed on the periphery of the inner wall of the electrochemical reaction bin; the inner wall of the electrochemical reaction bin facing the opening and the second injection molding narrow side jointly clamp the anode.

Optionally, the oxygen treatment device further comprises: a cathode conductive part connected to the cathode and extending to the outside of the case so as to be connected to a negative electrode of an external power source; and an anode conductive part connected to the anode and extending to the outside of the case so as to be connected to the positive electrode of an external power source.

Optionally, the housing further comprises: a base body, one surface of which is open; the outer frame is provided with an opening, the cathode and the outer frame are formed by injection molding to construct a cathode assembly, and the cathode assembly is buckled at the opening of the base body so as to limit an electrochemical reaction bin with the base body.

Optionally, a second injection molded narrow side is formed on the interior of the base.

In particular, the present utility model provides a refrigerated freezer comprising an oxygen treatment device of any of the above.

In the oxygen treatment device, the first injection molding narrow edge coated on at least one surface periphery of the cathode is formed at the inner edge of the opening in the injection molding process of the shell so as to fix the cathode, and the shell and the cathode jointly define an electrochemical reaction chamber for containing electrolyte, so that the technical staff realize that: in order to improve stability and safety of the cathode, the width of the first injection molding narrow edge coated on the edge of the cathode should be limited to a certain extent in the injection molding process, and the width of the first injection molding narrow edge is not less than 1mm, so that necessary guarantee can be provided for fixing the cathode.

Further, in the oxygen treatment device of the present utility model, since the larger the cathode area, i.e., the larger the required fixing portion, the larger the width of the first injection-molded narrow side should be to ensure the stability of the cathode, the first injection-molded narrow side should be set according to the cathode area by studying: when the area of the cathode is less than or equal to 200cm ² The width of the first injection molding narrow side is not less than 1mm when the area of the cathode is more than 200cm ² And less than or equal to 300cm ² The width of the first injection-molded narrow side is not less than 1.2mm when the area of the cathode is more than 300cm ² When the width of the first injection molding narrow side is configured to be not less than 1.5mm.

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

Drawings

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

FIG. 1 is a schematic block diagram of a refrigeration and freezer according to one embodiment of the utility model;

FIG. 2 is a schematic view of the use of an oxygen treatment device in a refrigeration chiller according to one embodiment of the present utility model;

FIG. 3 is a schematic view of the use of an oxygen treatment device in a refrigeration chiller according to another embodiment of the present utility model;

FIG. 4 is a schematic view of an oxygen treatment device in a refrigeration chiller according to one embodiment of the present utility model;

FIG. 5 is an exploded view of an oxygen treatment device in a refrigeration chiller according to one embodiment of the present utility model;

FIG. 6 is a cross-sectional view of an oxygen treatment device in a refrigerator-freezer according to one embodiment of the utility model;

FIG. 7 is a schematic view showing the positional relationship between a cathode and a first injection-molded narrow side in an oxygen treatment device according to an embodiment of the present utility model;

FIG. 8 is a schematic view of an electrode in an oxygen treatment device according to one embodiment of the present utility model;

FIG. 9 is a schematic view of a cathode assembly in an oxygen treatment device according to one embodiment of the present utility model;

FIG. 10 is a cross-sectional view of the cathode assembly shown in FIG. 9;

FIG. 11 is a cross-sectional view of an oxygen treatment device in a storage freezer according to another embodiment of the present utility model;

FIG. 12 is a schematic view showing the positional relationship of a cathode, an anode and a separator in an oxygen treatment device according to another embodiment of the present utility model;

FIG. 13 is a cross-sectional view of an oxygen treatment device in a refrigeration and freezer according to another embodiment of the utility model;

fig. 14 is a rear view of a cathode assembly in an oxygen treatment device according to one embodiment of the present utility model.

Detailed Description

In the description of the present embodiment, it is to be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "depth", and the like indicate orientations or positional relationships as references based on orientations in a normal use state, and can be determined with reference to the orientations or positional relationships shown in the drawings, for example, "front" indicating an orientation refers to a side toward a user. This is merely to facilitate describing the utility model and to simplify the description and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1, fig. 1 is a schematic view of a refrigerating and freezing apparatus 1 according to an embodiment of the present utility model. The present utility model provides a refrigeration and freezer 1, which refrigeration and freezer 1 may generally include a cabinet 10 and a door 20.

The case 10 may include a housing located at the outermost side of the overall refrigerator-freezer 1 to protect the overall refrigerator-freezer 1, and a plurality of inner containers. The plurality of inner containers are wrapped by the shell, and a space between the inner containers and the shell is filled with a heat insulation material (forming a foaming layer) so as to reduce outward heat dissipation of the inner containers. Each liner may define a forwardly open compartment, and the compartments may be configured as a refrigerated compartment, a freezer compartment, a temperature change compartment, etc., with the number and function of the particular compartments being configurable according to the needs in advance.

The door 20 is movably installed in front of the inner container to open and close the storage compartment of the inner container, for example, the door 20 may be hinged to one side of the front of the case 10 to open and close the storage compartment in a pivoting manner.

The refrigerating and freezing apparatus 1 may further include a drawer assembly 30, and the drawer assembly 30 may further include a drawer body drawably provided in the case 10 so that a user can take the articles.

In some embodiments, the refrigerating and freezing apparatus 1 may further include an oxygen treatment apparatus 40, and the oxygen treatment apparatus 40 may be used to transfer external oxygen to the inside thereof through an electrochemical reaction and then to collect the transferred oxygen, thereby achieving the purpose of adjusting the oxygen content of the pre-adjustment space 50.

Referring to fig. 2 and 3, fig. 2 is a schematic view of the usage of the oxygen treatment device 40 in the refrigerating and freezing apparatus 1 according to one embodiment of the present utility model, and fig. 3 is a schematic view of the usage of the oxygen treatment device 40 in the refrigerating and freezing apparatus 1 according to another embodiment of the present utility model.

In some embodiments, the oxygen treatment device 40 may be in communication with the pre-conditioning space 50 (e.g., the storage compartment or drawer assembly 30) via a conduit, or may be disposed directly on the pre-conditioning space 50, and oxygen within the pre-conditioning space 50 may enter the oxygen treatment device 40 and then be transferred out of the pre-conditioning space 50 in a concentrated manner, thereby achieving the purpose of adjusting the oxygen content.

There are also various ways in which oxygen may exit the oxygen treatment device 40. Referring to fig. 3, one is to vent oxygen directly to the external environment; referring to fig. 4, the oxygen is directly discharged into other storage spaces of the refrigerating and freezing apparatus 1 to create an oxygen-enriched environment 60, which is not particularly limited in the present utility model.

Referring to fig. 4 and 5, fig. 4 is a schematic view of an oxygen treatment device 40 in a refrigerating and freezing apparatus 1 according to an embodiment of the present utility model, fig. 5 is an exploded view of the oxygen treatment device 40 in the refrigerating and freezing apparatus 1 according to an embodiment of the present utility model, and fig. 6 is a sectional view of the oxygen treatment device 40 in the refrigerating and freezing apparatus 1 according to an embodiment of the present utility model.

In some embodiments, the oxygen treatment device 40 may further include a housing 410 and an electrode pair 420 disposed on a surface or inside the housing 410, the electrode pair 420 for transferring external oxygen to an inside of the housing 410 through an electrochemical reaction so as to achieve concentrated discharge.

The electrode pair 420 may comprise two electrodes 422, the two electrodes 422 being connected to the positive and negative poles of the power supply, respectively, i.e. the two electrodes 422 are configured as an anode 426 and a cathode 424, respectively.

The cathode 424 may be made of a waterproof, breathable material. The case 410 is provided in a hollow structure, and one side thereof is opened to form an opening 412a, and the cathode 424 may be disposed at the opening 412a to define an electrochemical reaction chamber 413 for containing an electrolyte together with the case 410.

The electrochemical reaction bin 413 contains electrolyte, and the electrolyte can be alkaline electrolyte or acidic electrolyte, for example, 0.1-8 mol/L NaOH solution, and can be specifically adjusted according to actual needs.

In some particular embodiments, the cathode 424 may be made of a waterproof and breathable material, which may include, in particular, a catalytic layer, a first waterproof and breathable layer, an electrically conductive layer, and a second waterproof and breathable layer disposed in that order from the inside to the outside (where "inside-out direction" is understood to mean a direction coincident with the inside-out direction of the housing 410). The catalytic layer may employ a noble or rare metal catalyst, such as metallic platinum, metallic gold, metallic silver, metallic manganese, or metallic rubidium, among others. The first waterproof and breathable layer and the second waterproof and breathable layer may be waterproof and breathable films such that electrolyte cannot seep from the electrochemical reaction chamber 413, and oxygen in the air may enter the electrochemical reaction chamber 413 through the first waterproof and breathable layer and the second waterproof and breathable layer. The conductive layer can be made into corrosion-resistant metal current collecting net, such as metal nickel, metal titanium and the like, so that the conductive layer not only has better conductivity, corrosion resistance and supporting strength.

Anode 426 may be made of a material having high corrosion resistance and high reducibility, such as metallic nickel foam, nickel mesh, or the like. An anode 426 is disposed in the electrochemical reaction chamber 413 and is spaced from and opposite the cathode 424, the anode 426 being immersed in the electrolyte.

Since the cathode 424 is connected with the negative electrode of the external power source, the oxidation reaction can occur at the cathode 424 in the energized state, and oxygen in the air can be oxidized into OH at the cathode 424 ^- The method comprises the following steps: o (O) ₂ +2H ₂ O+4e ^- →4OH ^- 。

Since the anode 426 is connected to the positive electrode of the external power source, in the energized state, negative ions (OH ^- ) Flows to the anode 426 under the action of the electric field, and oxidation reaction occurs at the anode 426 to generate oxygen, namely: 4OH ^- →O ₂ +2H ₂ O+4e ^- I.e., to transfer the pre-conditioning space 50 to the vicinity of the anode 426.

The housing 410 may be provided with an oxygen vent 416 near the anode 426. Oxygen generated at the anode 426 can be discharged from the oxygen discharge port 416, so that the oxygen treatment device 40 can transfer oxygen in the pre-adjustment space 50 into the electrochemical reaction chamber 413 and intensively discharge the oxygen from the electrochemical reaction chamber 413, thereby achieving the purpose of adjusting the oxygen content in the pre-adjustment space 50.

Further, since a large amount of heat is generated during the reaction, the electrolyte is heated and evaporated, which results in loss of solvent (water) of the electrolyte in the electrochemical reaction chamber 413, and the liquid level of the electrolyte is lowered, which affects the reaction efficiency.

The inside of the casing 410 may be further provided with a fluid-filling chamber 414, and a solvent (water) of the electrolyte may be pre-stored in the fluid-filling chamber 414, and when the liquid level of the electrolyte drops to a predetermined value, the fluid-filling chamber 414 may be opened to fill the electrochemical reaction chamber 413 with the electrolyte, so as to ensure that the liquid level of the electrolyte in the electrochemical reaction chamber 413 is normal. Of course, the fluid-filling chamber 414 may be further disposed outside the housing 410, i.e., a fluid-filling device connected to the housing 410 is separately disposed to fill the electrochemical reaction chamber 413 with fluid.

Further, the top of the casing 410 may further be provided with a liquid storage tank 415, and the oxygen discharge port 416 may be formed at the bottom of the liquid storage tank 415, so that the liquid in the liquid storage tank 415 can seal the oxygen discharge port 416, and external air is prevented from entering the electrochemical reaction chamber 413 through the oxygen discharge port 416.

Referring to fig. 7, in some embodiments, the two electrodes 422 may be respectively connected to an external power source through two conductive parts 430, respectively. Specifically, the two conductive portions 430 may be configured as a cathode conductive portion 432 and an anode conductive portion 434, respectively, and the cathode conductive portion 432 and the anode conductive portion 434 are electrically connected with the cathode 424 and the anode 426, respectively, and are connected to the negative electrode and the positive electrode of the external power source, respectively, to form a conductive loop.

The overall shape of the two conductive portions 430 is plate-like or columnar, or in some simple cases, the conductive portions 430 may be directly replaced with wires. The conductive portion 430 is made of the same or equivalent material as the electrode 422, so that electrochemical corrosion is avoided.

The connection between the two conductive portions 430 and their corresponding electrodes 422 may be provided as a detachable connection (e.g., a threaded connection, a snap-fit connection, a form-fit connection, etc.) or as a non-detachable connection (e.g., welded, integrally formed, etc.). It should be noted that, when the cathode conductive portion 432 is connected to the cathode 424, it may be specifically connected to the conductive layer of the cathode 424.

Referring to fig. 6, the cathode conductive part 432 and the anode conductive part 434 may also be respectively penetrated through the case 410 and extend to the outside of the case 410 so as to be connected to an external power source.

In some embodiments, the connection between the two electrodes 422 and the housing 410 may also be provided as a detachable connection (e.g., a threaded connection, a snap-fit connection, a form-fit connection, etc.), a non-detachable connection (e.g., welded, integrally formed, etc.).

In some specific embodiments, the anode 426 may be disposed in the electrochemical reaction chamber 413 in the form of a hole-column fit. The inner wall of the housing 410 facing the opening 412a is formed with a plurality of fixing posts, and the anode 426 is formed with a plurality of fixing holes, which are matched with the fixing posts to fix the anode 426. After being positioned by the fixing posts and the fixing holes, the ends of the fixing posts can be melted to form front and rear limiting, so that the anode 426 is thoroughly fixed.

In some embodiments, the two electrodes 422 and the housing 410 may be connected by injection molding, so that the connection is relatively stable, the sealing between the cathode 424 and the housing 410 is good, and the production efficiency is high.

In injection molding, an injection mold is designed according to the shape of the housing 410, then the anode 426 is placed in advance at the opening 412a to be formed in the housing 410, the anode 426 is placed in advance inside the electrochemical reaction chamber 413 to be formed, and finally a liquid plastic raw material (such as polypropylene) is injected into the injection mold, and after cooling and shaping, the mold is opened, so that the cathode 424 and the anode 426 can be fixed to the housing 410.

Specifically, when designing the injection mold, plastic material is coated on the periphery of each electrode 422, and finally an injection narrow edge coated on at least one periphery of each electrode 422 can be formed, so as to more firmly clamp the two electrodes 422.

Referring to fig. 6 and 7, fig. 7 is a schematic view illustrating a positional relationship between a cathode 424 and a first injection molding narrow side 442 in an oxygen treatment device 40 according to an embodiment of the present utility model. For example, for the cathode 424, in the injection molding process, two sections of first injection molding narrow edges 442 are formed on the inner and outer sides of the inner edge of the opening 412a, and the two sections of first injection molding narrow edges 442 can respectively cover the peripheral edges of the inner and outer sides of the cathode 424 so as to jointly clamp the cathode 424, and the rest part of the cathode 424 except the covered peripheral edge is used as an effective air inlet part so that oxygen enters the electrochemical reaction chamber 413.

For the anode 426, one or two sections of second injection-molded narrow sides 444 are formed on the periphery of the inner wall of the electrochemical reaction chamber 413 during the injection molding process. Referring to fig. 6, when a section of the second injection-molded narrow side 444 is designed, the second injection-molded narrow side 444 may clamp the anode 426 with the inner wall of the electrochemical reaction chamber 413 facing the opening 412 a. When designing the two sections of the second injection molding narrow sides 444, the two sections of the second injection molding narrow sides 444 can respectively cover the peripheral edges of the inner side and the outer side of the anode 426 so as to jointly clamp the cathode 424.

Further, since the cathode 424 is to simultaneously take charge of the gas and define the electrochemical reaction chamber 413, stability of the cathode 424 and leakage prevention are important. Therefore, in order to improve the stability and safety of the cathode 424, the width of the first injection molding narrow edge 442 wrapping the edge of the cathode 424 should be limited during the injection molding process.

Referring to fig. 7, the skilled person found by experiment that: the width of the first injection-molded narrow side 442 is not less than 1mm, i.e., is configured to be 1mm at a minimum, which can provide necessary assurance for the fixation of the cathode 424.

Further, the width of the first injection-molded narrow side 442 needs to be configured according to the area of the cathode 424. Since the larger the area of the cathode 424, i.e., the larger the required fixing portion, the larger the width of the first injection-molded narrow side 442 should be to secure the stability of the cathode 424. The area of the cathode 424 is denoted as S1, and the width of the first injection-molded narrow side 442 is denoted as D, as follows:

if S1 is less than or equal to 200cm ² D is more than or equal to 1mm when the diameter is smaller than or equal to the diameter;

if 200cm ² ＜S1≤300cm ² When D is more than or equal to 1.2mm;

if S1 is greater than 300cm ² When the diameter D is more than or equal to 1.5mm.

Further, the width of the first injection molded narrow side 442 is further configured according to the concentration of the electrolyte. Since the greater the concentration of electrolyte during operation, the higher the oxygen transfer efficiency, the greater the stability requirement for the cathode 424 should be, i.e., the greater the width of the first injection-molded narrow side 442 should be, to ensure stability of the cathode 424. The concentration of the electrolyte is denoted as M, and the specific relationship is as follows:

at S1 is less than or equal to 200cm ² Is that:

d is more than or equal to 1mm when M is less than or equal to 3 mol/L;

if M is more than 3 and less than or equal to 5mol/L, D is more than or equal to 1.1mm;

if M is more than 5mol/L, D is more than or equal to 1.2mm.

At 200cm ² ＜S1≤300cm ² Is that:

if M is less than or equal to 3mol/L, D is more than or equal to 1.2mm;

if M is more than 3 and less than or equal to 5mol/L, D is more than or equal to 1.3mm;

if M is more than 5mol/L, D is more than or equal to 1.4mm.

At S1 > 300cm ² Is that:

if M is less than or equal to 3mol/L, D is more than or equal to 1.5mm;

if M is more than 3 and less than or equal to 5mol/L, D is more than or equal to 1.6mm;

if M is more than 5mol/L, D is more than or equal to 1.7mm.

In summary, the relationship among the width D of the first injection-molded narrow side 442, the area S1 of the cathode 424, and the concentration M of the electrolyte is shown in table 1:

TABLE 1

Further, since the electrode 422 passes through the conductive part 430 to be connected with an external power source, the electrode 422 and the conductive part 430 may be connected before injection molding, so that the conductive part 430 has a section stably located inside the case 410 after injection molding, which not only improves the stability between the electrode 422, the conductive part 430 and the case 410, but also ensures the sealability between the case 410 and the conductive part 430, preventing leakage of electrolyte from a gap between the case 410 and the conductive part 430.

Referring to fig. 6 and 8, fig. 8 is a schematic view of an electrode 422 in an oxygen treatment device 40 according to one embodiment of the present utility model. Further, at least one section of conductive portion 430 within housing 410 has at least one bend 436 to prevent electrolyte within housing 410 from seeping along conductive portion 430. The bent portion 436 may be formed on the cathode conductive portion 432 and/or the anode conductive portion 434, as the case may be.

The skilled person realizes that: for alkaline electrolyte, although the gap between the case 410 and the conductive part 430 is sealed, once the level of the electrolyte is too high, the electrolyte is at risk of climbing up the conductive part 430 out of the case 410, which not only affects the conductivity of the power supply, but also accelerates the consumption of the electrolyte ("alkali climbing phenomenon").

After one or more bending parts 436 are arranged on the conductive part 430, the contact area between the conductive part 430 and the shell 410 is increased, the path of the electrolyte climbing out of the shell 410 upwards is prolonged, the electrolyte cannot easily seep out of the shell 410, and the alkali climbing phenomenon is solved.

Further, the skilled artisan will also appreciate that the shorter the section of the conductive portion 430 inside the housing 410, the higher the probability of "alkali climbing" occurs, and the longer the section of the conductive portion 430 inside the housing 410, the lower the probability of "alkali climbing" occurs. The technician also gives the relationship between the number of folds 436 and the length of the conductive portion 430 at the interior section of the housing 410, as verified by experimentation.

The number of bending portions 436 is configured to be not less than 2 (e.g., 2, 3, etc.) when the conductive portion 430 is located at the inner section of the case 410 with a length of less than 5mm, and the conductive portion 430 is selectively bendable but not more than 2 when the conductive portion 430 is located at the inner section of the case 410 with a length of more than 5mm.

In some embodiments, each fold 436 bulges to one or both sides of conductive portion 430. When the number of the bending portions 436 is 1, the bending portions 436 may be formed to protrude toward one side of the conductive portion 430, and when the number of the bending portions 436 is 2 or more, the bending portions 436 may be alternately formed on both sides of the conductive portion 430 in order.

Referring to fig. 8, in some embodiments, the bump height H1 of each fold 436 is set to be no less than 3mm, such as 3mm, 4mm, 5mm, and so forth.

In some embodiments, the connection between the housing 410 and the conductive portion 430 is coated with a sealing grease (such as vaseline, not shown in the figure) to improve the sealing between the housing 410 and the conductive portion 430, and further avoid "alkali climbing".

Referring to fig. 5 and 9, fig. 9 is a schematic view of a cathode assembly 460 in an oxygen treatment device 40 according to one embodiment of the present utility model. In some embodiments, the housing 410 may further include a base 411 and an outer frame 412. One surface of the base 411 is open, an opening 412a is formed on the outer frame 412, the cathode 424 and the outer frame 412 are injection molded to construct a cathode assembly 460, and the cathode assembly 460 is fastened at the opening 411a of the base 411 to define an electrochemical reaction chamber 413 with the base 411.

The base 411 may be further configured with a plurality of outer frames 412. The entire base 411 may be flat, and a plurality of openings 411a may be formed on a wider surface thereof, and a cathode assembly 460 may be disposed at each opening 411a, and an anode 426 may be disposed at each cathode assembly 460 inside the base 411, that is, the oxygen treatment device 40 may have a plurality of reaction units at the same time.

Prior to assembly, the base 411 and the anode 426 may be integrally formed, i.e., a second injection molded narrow side 444 is formed inside the base 411, and the second injection molded narrow side 444 may clamp the anode 426 together with the inner wall of the base 411 facing the opening 411 a.

Referring to fig. 10, fig. 10 is a cross-sectional view of the cathode assembly 460 shown in fig. 9. The outer frame 412 and the cathode 424 may be integrally formed, that is, two sections of the first injection molding narrow sides 442 are respectively formed on the inner and outer sides of the periphery of the opening 412a of the outer frame 412 to clamp the cathode 424. After the molding is completed, the cathode assembly 460 formed by the outer frame 412 and the cathode 424 may be mounted at the opening 411a of the base 411 by thermal welding or the like, to form the complete oxygen treatment device 40.

In general, in order to improve the adaptability of the oxygen treatment device 40, the oxygen treatment device 40 has to be miniaturized, and the distance between the cathode 424 and the anode 426 has to be reduced, so that when the oxygen treatment device 40 is pressed by an external force, there is a risk that the cathode 424 and the anode 426 may be shorted, and thus the short circuit prevention method of the oxygen treatment device 40 is also important.

Referring to fig. 11, fig. 11 is a cross-sectional view of an oxygen treatment device 40 in a refrigerator-freezer according to another embodiment of the present utility model. In some particular embodiments, the oxygen treatment device 40 may also include a barrier layer 450. The barrier 450 is made of an insulating material (plastic, etc.) and is disposed between the cathode 424 and the anode 426 in opposition to the cathode 424 in the electrochemical reaction chamber 413 to avoid shorting the cathode 424 to the anode 426.

The interlayer 450 is disposed between the cathode 424 and the anode 426 and is made of an insulating material, so that the cathode 424 and the anode 426 are physically isolated, and the cathode 424 and the anode 426 can be prevented from being shorted even if being pressed by external force, thereby improving the reliability of the oxygen treatment device 40.

In addition, the profile of barrier 450 may also be configured to match the profile of the interior wall of electrochemical reaction chamber 413, which may also provide support to prevent deformation of housing 410 when barrier 450 is installed into electrochemical reaction chamber 413.

On the basis, in order to enable the conductive particles in the electrolyte to freely flow between the cathode 424 and the anode 426, a plurality of liquid-permeable holes 452 may be formed in the separator 450.

The porosity of barrier layer 450 (aperture refers to liquid permeable aperture 452) may be further arranged to be between 30% and 70%, such as 30%, 40%, 50%, 60%, 70%, etc.

Referring to fig. 11, the overall shape of the barrier layer 450 may be configured to be planar. Referring to fig. 12, fig. 12 is a schematic view illustrating a positional relationship among a cathode 424, an anode 426, and a barrier 450 in an oxygen treatment device 40 according to another embodiment of the present utility model. The overall shape of barrier 450 may also be arcuate.

When barrier layer 450 is formed in a cambered shape, barrier layer 450 is preferably formed such that the middle portion bulges toward anode 426, and thus, the middle portion of barrier layer 450 bulges toward anode 426 due to the presence of the membrane structure in cathode 424, so that bulge 417 can be prevented from puncturing the membrane structure of cathode 424 and thus, leakage of the electrolyte can be prevented.

Referring to FIG. 12, in some specific embodiments, the bump height H2 of barrier layer 450 is set to be between 2mm and 8mm, 2mm, 3.5mm, 5mm, 7mm, 8mm, and so forth.

The partition 450 may be mounted in various ways, and may be fixed to the inner wall of the electrochemical reaction chamber 413 in a detachable manner, or may be fixed to the inner wall of the electrochemical reaction chamber 413 in a manner integrally formed with the housing 410, for example, by a fixed electrode 422.

For example, the spacer 450 may be formed together with the outer frame 412 and the cathode 424, and after the final forming, the periphery of the spacer 450 is fixed to the rear surface of the outer frame 412, and then the assembly formed by the spacer 450, the outer frame 412 and the cathode 424 is mounted to the opening 411a of the base 411, so that the mounting is completed, and the method is simple and convenient, and the stability is strong.

Referring to fig. 13, fig. 13 is a cross-sectional view of an oxygen treatment device 40 in a refrigeration and freezer 1 according to another embodiment of the utility model. In other embodiments, the oxygen treatment device 40 may further eliminate the barrier 450 by providing a ridge 417 directly inside the electrochemical reaction chamber 413 to form a physical barrier between the cathode 424 and the anode 426, avoiding shorting the cathode 424 to the anode 426.

Specifically, the bump 417 is disposed on the inner surface of the wall of the housing 410 where the opening 412a is located. Since the cathode 424 is disposed at the opening 412a and the bump 417 is disposed on the inner surface of the casing wall where the opening 412a is located, the anode 426 is disposed inside the electrochemical reaction chamber 413, that is, the bump 417 is disposed between the cathode 424 and the anode 426, which can serve to physically isolate the cathode 424 from the anode 426.

Referring to fig. 13 and 14, fig. 14 is a rear view of a cathode assembly 460 in an oxygen treatment device 40 according to one embodiment of the present utility model. The ridge portion 417 is formed on the inner surface of the outer frame 412. The bump 417 may be integrally formed during the molding of the outer frame 412 and the cathode 424, but it should be noted that the bump 417 is located so as to ensure that the cathode assembly 460 is mounted on the base 411 and cannot be caught at the opening 411a of the base 411, that is, so as to ensure that the bump 417 is located in the electrochemical reaction chamber 413 after the cathode assembly 460 is mounted on the base 411.

Referring to fig. 14, the bump 417 may also be configured in a ring shape, which can isolate the cathode 424 from the anode 426 all around, improving reliability.

The annular area formed by the ridge 417 may also be configured to be smaller than the area of the anode 426 to avoid the anode 426 from falling off and passing through the ridge 417, further avoiding contact between the anode 426 and the cathode 424.

Referring to fig. 13, the height H3 of the bump 417 may also be set to be between 2mm and 8mm, 2mm, 3.5mm, 5mm, 7mm, 8mm, etc.

Further, the oxygen treatment device 40 may further include an insulating mesh (not shown) to be used with the bump 417 to further avoid short-circuiting the cathode 424 and the anode 426. The insulating net is of a net structure so as to facilitate air intake. An insulating mesh may be disposed on the surface of the cathode 424 facing the anode 426. Alternatively, it is also understood that the insulating mesh is injection molded onto the cathode 424 during injection molding.

In some embodiments, in addition to physically isolating the cathode 424 from the anode 426 in the two embodiments described above, the probability of a short circuit may be reduced by appropriately increasing the distance between the cathode 424 and the anode 426.

Because the distance between the cathode 424 and the anode 426 also affects the oxygen transfer efficiency, the larger the distance is, the lower the transfer efficiency is, and the transfer efficiency is also related to the effective air inlet area of the cathode 424 (the part of the area of the cathode 424 exposed to the opening 412a is the effective air inlet area), when the effective air inlet area of the cathode 424 is larger, the air inlet efficiency is higher, so when the effective air inlet area of the cathode 424 is relatively larger, the distance between the cathode 424 and the anode 426 can be properly increased, so that the transfer efficiency of oxygen is not affected, and the probability of short circuit can be reduced.

In connection with fig. 7 and 12, the skilled person experimentally gives the following conclusion (the effective intake area of the cathode 424 is denoted as S0, and the distance between the surfaces of the cathode 424 and the anode 426 opposite to each other is denoted as L):

if S0 is less than or equal to 200cm ² When the L is more than or equal to 3mm and less than or equal to 15mm;

if 200cm ² ＜S0≤300cm ² When the L is more than or equal to 5mm and less than or equal to 20mm;

if S0 is more than 300cm ² When the L is more than or equal to 7mm and less than or equal to 25mm.

Further, since the transfer efficiency is also related to the concentration M of the electrolyte, that is, when the concentration M of the electrolyte is larger, the intake efficiency is higher, the distance between the cathode 424 and the anode 426 can be appropriately increased, so that the transfer efficiency of oxygen is not affected, and the probability of occurrence of short circuit can be reduced. The skilled person gives the following conclusions by experiments:

at S0 is less than or equal to 200cm ² Is that:

if M is less than or equal to 3mol/L, L is less than or equal to 3mm and less than or equal to 15mm;

if M is more than 3 and less than or equal to 5mol/L, L is more than or equal to 3.5mm and less than or equal to 15mm;

if M is more than 5mol/L, L is more than or equal to 4mm and less than or equal to 15mm.

At 200cm ² ＜S0≤300cm ² Is that:

if M is less than or equal to 3mol/L, L is less than or equal to 5mm and less than or equal to 20mm;

if M is more than 3 and less than or equal to 5mol/L, L is more than or equal to 5.5mm and less than or equal to 20mm;

if M is more than 5mol/L, L is more than or equal to 6mm and less than or equal to 20mm.

At S0 > 300cm ² Is that:

if M is less than or equal to 3mol/L, L is less than or equal to 7mm and less than or equal to 25mm;

if M is more than 3 and less than or equal to 5mol/L, L is more than or equal to 7.5mm and less than or equal to 25mm;

if M is more than 5mol/L, L is more than or equal to 8mm and less than or equal to 25mm.

In summary, the relationship between the effective inlet area S0 of the cathode 424, the distance L between the surfaces of the cathode 424 and the anode 426 facing each other, and the concentration M of the electrolyte is shown in table 2:

TABLE 2

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

Claims

1. An oxygen treatment device, characterized by comprising:

a housing, one side of which forms an opening; and, a step of, in the first embodiment,

the cathode is made of waterproof and breathable materials and is arranged at the opening;

the oxygen treatment device is configured to: forming a first injection molding narrow edge which is coated on at least one surface periphery of the cathode at the inner edge of the opening in the injection molding process of the shell so as to fix the cathode, and enabling the shell and the cathode to jointly define an electrochemical reaction bin for containing electrolyte; wherein,

the width of the first injection molding narrow side is configured to be not less than 1mm.

2. The oxygen treatment device according to claim 1, wherein,

the width of the first injection molding narrow side is configured according to the area of the cathode, and the specific relation is as follows:

if the area of the cathode is less than or equal to 200cm ² When the width of the first injection molding narrow edge is not smaller than 1mm;

if the area of the cathode is larger than 200cm ² And less than or equal to 300cm ² When the width of the first injection molding narrow edge is not smaller than 1.2mm;

if the area of the cathode is more than 300cm ² When the width of the first injection molding narrow side is configured to be not less than 1.5mm.

3. The oxygen treatment device according to claim 2, wherein,

the width of the first injection molding narrow side is further configured according to the concentration of the electrolyte;

if the area of the cathode is less than or equal to 200cm ² The specific relation is as follows:

if the concentration of the electrolyte is less than or equal to 3mol/L, the width of the first injection molding narrow side is configured to be not less than 1mm;

if the concentration of the electrolyte is more than 3mol/L and less than or equal to 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.1mm;

and if the concentration of the electrolyte is more than 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.2mm.

4. The oxygen treatment device according to claim 2, wherein,

if the area of the cathode is larger than 200cm ² And less than or equal to 300cm ² The specific relationship is as follows:

if the concentration of the electrolyte is less than or equal to 3mol/L, the width of the first injection molding narrow side is configured to be not less than 1.2mm;

if the concentration of the electrolyte is more than 3mol/L and less than or equal to 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.3mm;

and if the concentration of the electrolyte is more than 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.4mm.

5. The oxygen treatment device according to claim 2, wherein,

if the area of the cathode is more than 300cm ² The specific relationship is as follows:

if the concentration of the electrolyte is less than or equal to 3mol/L, the width of the first injection molding narrow side is configured to be not less than 1.5mm;

if the concentration of the electrolyte is more than 3mol/L and less than or equal to 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.6mm;

and if the concentration of the electrolyte is more than 5mol/L, the width of the first injection molding narrow side is configured to be not less than 1.7mm.

6. The oxygen treatment device of claim 1, further comprising:

the anode is arranged opposite to the cathode and is arranged in the electrochemical reaction bin, and a second injection molding narrow edge which is coated on the periphery of one surface of the anode is formed on the periphery of the inner wall of the electrochemical reaction bin;

the inner wall of the electrochemical reaction bin facing the opening and the second injection molding narrow side jointly clamp the anode.

7. The oxygen treatment device of claim 6, further comprising:

a cathode conductive part connected to the cathode and extending to the outside of the case so as to be connected to a negative electrode of an external power source;

and an anode conductive part connected to the anode and extending to the outside of the case so as to be connected to a positive electrode of an external power source.

8. The oxygen treatment device of claim 6, wherein the housing further comprises:

a base body, one surface of which is open;

the opening is formed in the outer frame, the cathode and the outer frame are formed by injection molding to form a cathode assembly, and the cathode assembly is buckled at the opening of the matrix to define the electrochemical reaction bin with the matrix.

9. The oxygen treatment device according to claim 8, wherein,

the second injection molding narrow side is formed inside the matrix.

10. A refrigerating and freezing apparatus characterized by comprising the oxygen treatment apparatus according to any one of claims 1 to 9.