Oxygen processing equipment and refrigeration and freezing equipment having the same.

Abstract

This invention provides an oxygen treatment device and a refrigeration / freezing device having the same. The oxygen treatment device includes: multiple separately and independently arranged horizontally parallel and interconnected liquid storage chambers; wherein at least one liquid storage chamber is an oxygen reaction chamber, providing assembly space for assembling electrode pairs and serving as a reaction site for electrochemical reactions to generate oxygen-deficient or oxygen-enriched gas; and at least one liquid storage chamber is a liquid volume regulating chamber, having a replenishment port connected to an external liquid source to receive liquid from the external liquid source and supply it to at least one oxygen reaction chamber. Since the liquid volume regulating chamber and the oxygen reaction chamber form a communicating vessel, and liquid levels can be synchronized based on the principle of communicating vessels, the solution of this invention helps to reduce the impact force on the electrode pairs during the replenishment process and improves the structural stability of the oxygen treatment device.

Description

Technical Field

[0001] This invention relates to modified atmosphere storage, and more particularly to oxygen processing devices and refrigeration and freezing devices having the same. Background Technology

[0002] Modified atmosphere storage (MAP) technology extends the shelf life of food by adjusting the composition of gases in the environment. Refrigeration and freezing systems with MAP capabilities are widely popular. Among the many gas components, oxygen is of particular interest. Oxygen treatment devices can process oxygen in the working environment to produce oxygen-deficient or oxygen-enriched gases, thereby regulating the oxygen content.

[0003] Some existing oxygen treatment devices, such as those that use electrochemical reactions to treat oxygen, require the timely replenishment of electrolyte to ensure continuous electrochemical reactions using the electrode pairs. However, the inventors recognized that the replenishment process generates impact forces that can damage the electrode pairs, leading to performance degradation.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] One object of the present invention is to overcome at least one technical defect in the prior art and to provide an oxygen processing apparatus and a refrigeration and freezing apparatus having the same.

[0006] A further objective of this invention is to reduce the impact force on the electrode pair during the replenishment process and improve the structural stability of the oxygen treatment device.

[0007] A further objective of this invention is to flexibly and dynamically adjust the structure and operating efficiency of the oxygen treatment device.

[0008] Another further objective of this invention is to reduce or avoid air resistance during the replenishment process, ensuring a smooth replenishment process.

[0009] Another further objective of this invention is to ensure that each liquid storage chamber, while achieving both pressure balancing and liquid storage functions, avoids the phenomenon of disordered fluid mixing.

[0010] Another further objective of this invention is to maintain a dynamic equilibrium in the liquid levels within each storage tank, thereby ensuring the smooth progress of the electrochemical reaction.

[0011] Another further objective of the present invention is to reduce the size of the oxygen treatment device while maintaining its operating efficiency.

[0012] In particular, according to one aspect of the present invention, an oxygen treatment apparatus is provided, comprising:

[0013] Multiple separate and independently configured liquid storage tanks are arranged horizontally in parallel and interconnected; among them

[0014] At least one of the said liquid storage chambers is an oxygen reaction chamber, which provides assembly space for assembling electrode pairs and serves as a reaction site for carrying out electrochemical reactions to generate oxygen-deficient or oxygen-enriched gas; and

[0015] At least one of the liquid storage tanks is a liquid volume regulating tank, which has a replenishment port connected to an external liquid source to receive liquid from the external liquid source and supply it to the at least one oxygen reaction tank.

[0016] Optionally, each of the liquid storage tanks is provided with a liquid passage connection port; the liquid passage connection port is located in the bottom section of the liquid storage tank; and

[0017] The oxygen treatment device further includes at least one liquid connection pipe, which connects the liquid connection ports of the two liquid storage tanks, thereby connecting the liquid connections of each of the liquid storage tanks.

[0018] Optionally, each of the liquid storage tanks has a gas passage connection port in its top section; and

[0019] The oxygen treatment device further includes at least one gas connection pipe, one of which connects the gas connection ports of the two liquid storage tanks, so that the liquid storage tanks are connected by gas; one of the liquid storage tanks is also provided with a vent that is connected by gas to the gas connection port and is used to connect to the external environment.

[0020] Optionally, each of the liquid storage chambers includes an upper chamber and a lower chamber that are interconnected and arranged vertically; wherein the upper chamber is used for gas circulation, and the lower chamber is used for liquid storage; and

[0021] The liquid passage connection port is located in the lower compartment; the gas passage connection port is located in the upper compartment; and the vent is located in the upper compartment of one of the liquid storage compartments.

[0022] Optionally, the replenishment port is located in the upper compartment of the liquid volume regulating chamber; and

[0023] The oxygen treatment device also includes a level switch disposed in the lower compartment of the liquid volume regulating chamber, used to open or close the passage between the lower compartment and the upper compartment of the liquid volume regulating chamber according to the movement of the liquid level in the lower compartment.

[0024] Optionally, the upper chamber of the liquid volume regulating chamber is provided with an isolation chamber that communicates with the liquid replenishment port and is spaced apart from the gas passage port; the bottom of the isolation chamber has a liquid outlet, which communicates with the lower chamber of the liquid volume regulating chamber; and

[0025] The liquid level switch is used to open or close the liquid outlet, thereby opening or closing the passage between the lower chamber and the upper chamber of the liquid volume regulating chamber.

[0026] Optionally, the oxygen treatment device further includes at least one electrode pair, one of which is assembled to the lower chamber of the oxygen reaction chamber; and

[0027] The electrode pair includes at least one cathode and one anode, used to transfer oxygen from the external gas into the oxygen reaction chamber through an electrochemical reaction, so that it flows to the vent and is discharged.

[0028] Optionally, multiple liquid storage chambers are arranged at intervals to form airflow gaps; the lower chamber has at least one lateral opening; and

[0029] The cathode is disposed at one of the lateral openings to define an electrolytic chamber for holding electrolyte, together with the lower chamber, and is used to consume oxygen in the gas flowing through the gas flow gap through an electrochemical reaction to generate oxygen-deficient gas; the anode is disposed in the electrolytic chamber and is used to provide reactants to the cathode through an electrochemical reaction and generate oxygen.

[0030] Optionally, the liquid storage tank is flat in shape; and

[0031] The lateral openings are two in number and are arranged opposite to each other, located on the wall of the lower compartment, which has the largest area and is perpendicular to the arrangement direction of the multiple liquid storage compartments.

[0032] Optionally, the oxygen treatment device also includes:

[0033] At least one connecting shaft; and

[0034] Each of the liquid storage chambers has at least one through-hole coaxially arranged in its wall. The through-hole is isolated from the internal space of the liquid storage chamber and allows the connecting shaft to be inserted into it to achieve connection.

[0035] Optionally, there are four connecting shafts, and each of the liquid storage chambers has four shaft holes in its wall; wherein

[0036] Two of the shaft holes are located in the top section of the liquid storage tank, and the other two shaft holes are located in the bottom section of the liquid storage tank.

[0037] Optionally, the oxygen treatment device also includes:

[0038] The housing has an air inlet and an air outlet for connecting to external pipelines, and its interior defines an airflow channel connecting the air inlet and the air outlet for arranging a plurality of liquid storage tanks.

[0039] Optionally, the oxygen treatment device also includes:

[0040] An airflow actuation device is disposed within the airflow channel and has an air inlet and an air outlet; wherein

[0041] The air intake is connected to the air inlet, and the air outlet is opposite to the air outlet; and the airflow actuation device is used to promote the formation of airflow from the air inlet into the airflow channel and towards the air outlet.

[0042] According to another aspect of the present invention, a refrigeration and freezing apparatus is also provided, comprising:

[0043] The box, whose interior defines storage space; and

[0044] An oxygen treatment device as described in any of the above is used to adjust the oxygen content of the storage space.

[0045] The oxygen treatment device and the refrigeration and freezing device having the present invention, by setting up multiple separate and independently arranged horizontally parallel and interconnected liquid storage tanks in the oxygen treatment device, and using at least one liquid storage tank as an oxygen reaction tank and at least one liquid storage tank as a liquid volume regulating tank, the liquid received by the liquid volume regulating tank can enter the oxygen reaction tank. Since the liquid volume regulating tank and the oxygen reaction tank form a communicating vessel, and the liquid level can be consistent based on the communicating vessel principle, the solution of the present invention is beneficial to reducing the impact force on the electrode pair during the liquid replenishment process and improving the structural stability of the oxygen treatment device.

[0046] Furthermore, in the oxygen treatment device and the refrigeration and freezing device having the present invention, since each liquid storage tank is set up separately and independently, when a liquid passage connection port is opened on the liquid storage tank and the liquid passage connection port of the liquid storage tank is connected by a liquid passage connection pipe to achieve liquid passage connection, the number of liquid storage tanks can be easily increased or decreased according to actual needs. Therefore, by adopting the solution of the present invention, the structure and working efficiency of the oxygen treatment device can be flexibly and dynamically adjusted without the need for adaptive modification of the internal structure of each liquid storage tank, and the whole device has a high degree of integration and cohesion.

[0047] Furthermore, the oxygen treatment device and the refrigeration and freezing device of the present invention, by opening a gas passage connection port in the top section of the liquid storage tank and using a gas passage connection pipe to connect each liquid storage tank with a gas passage, and opening a vent in one liquid storage tank that is connected to the gas passage connection port and used to connect with the external environment, can connect the airflow space in each liquid storage tank to the external environment. When the liquid volume regulating tank receives liquid from an external liquid source, the airflow space helps to achieve gas-liquid balance, reduces or avoids gas resistance during the liquid replenishment process, and ensures that the liquid replenishment process is carried out smoothly.

[0048] Furthermore, in the oxygen treatment apparatus and refrigeration apparatus of the present invention, when each liquid storage chamber includes an upper chamber and a lower chamber that are interconnected and arranged vertically, by opening a gas passage connection port in the upper chamber and a liquid passage connection port in the lower chamber, and by opening the vent in the upper chamber of one liquid storage chamber, since the upper chamber is used for gas flow and the lower chamber is used for liquid storage, a liquid storage area and a gas flow area can be defined in each liquid storage chamber. Under the premise of realizing the gas pressure balance function and the liquid storage function, the disorderly mixing of fluids can be avoided.

[0049] Furthermore, in the oxygen treatment apparatus and refrigeration / freezing apparatus of the present invention, when a replenishment port is opened in the upper compartment of the liquid volume regulating chamber and a liquid level switch is installed in the lower compartment of the liquid volume regulating chamber, the liquid level in each storage chamber can be kept in dynamic equilibrium under the action of the liquid level switch, thereby ensuring the smooth progress of the electrochemical reaction. Moreover, the liquid stored in the storage chamber can always remain in the lower compartment and will not occupy the airflow space defined by the upper compartment.

[0050] Furthermore, the oxygen treatment device and the refrigeration and freezing device having the present invention, by setting the liquid storage chamber to a flat shape and opening two lateral openings in the lower chamber of the oxygen reaction chamber, and opening the lateral openings on the wall with the largest area perpendicular to the arrangement direction of the multiple liquid storage chambers, can form a dense arrangement structure of the oxygen treatment device, which is beneficial to reduce the volume of the oxygen treatment device while ensuring working efficiency.

[0051] 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 of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0052] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0053] Figure 1This is a schematic structural diagram of an oxygen treatment apparatus according to an embodiment of the present invention;

[0054] Figure 2 yes Figure 1 A schematic exploded view of the oxygen treatment device shown;

[0055] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the oxygen processing device shown.

[0056] Figure 4 yes Figure 3 A schematic top view of the internal structure of the oxygen processing device shown;

[0057] Figure 5 This is an assembly structure diagram of the liquid storage tank of an oxygen treatment device according to an embodiment of the present invention;

[0058] Figure 6 yes Figure 5 A schematic side view of the assembly structure of the storage tank of the oxygen treatment device shown;

[0059] Figure 7 yes Figure 5 An exploded schematic diagram of the assembly structure of the storage tank of the oxygen treatment device shown.

[0060] Figure 8 yes Figure 3 A schematic perspective view of the liquid volume regulating chamber of the oxygen treatment device shown;

[0061] Figure 9 yes Figure 1 The diagram shows a schematic structural view of the housing of the oxygen processing device, with the top wall of the housing omitted.

[0062] Figure 10 This is an assembly structure diagram of the positioning mechanism and the airflow actuation device of an oxygen treatment apparatus according to an embodiment of the present invention;

[0063] Figure 11 yes Figure 10 An exploded schematic diagram of the assembly structure of the positioning mechanism and the airflow actuation device shown.

[0064] Figure 12 This is a schematic structural diagram of an oxygen treatment apparatus according to another embodiment of the present invention;

[0065] Figure 13 This is a schematic structural diagram of a refrigeration and freezing apparatus according to an embodiment of the present invention. Detailed Implementation

[0066] Reference will now be made in detail to embodiments of the invention, one or more of which are illustrated in the accompanying drawings. The various embodiments provided are intended to explain the invention and not to limit it. In fact, various modifications and variations to the invention will be apparent to those skilled in the art without departing from the scope or spirit of the invention. For example, a feature illustrated or described as part of one embodiment may be used with another embodiment to produce yet another embodiment. Therefore, the invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0067] The following reference Figures 1 to 13 This invention describes an oxygen treatment device 10 and a refrigeration / freezing device 20 having the same. The terms "inner," "outer," "upper," "lower," "top," "bottom," "lateral," "longitudinal," "horizontal," and "vertical," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. To facilitate illustrating the structure of the device, some of the accompanying drawings of the invention are shown in perspective.

[0068] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0069] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "coupling," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In the description of the embodiments of the present invention, the reference to terms such as "one embodiment," "some embodiments," "some examples," and "an example" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The present invention first provides an oxygen processing device 10. Figure 1 This is a schematic structural diagram of an oxygen treatment device 10 according to an embodiment of the present invention. Figure 2 yes Figure 1 A schematic exploded view of the oxygen processing device 10 shown.

[0072] The oxygen processing device 10 generally includes multiple separate and independently arranged horizontally parallel and interconnected liquid storage tanks.

[0073] The separate and independent arrangement of the liquid storage tanks means that each tank is not a single piece but can be manufactured independently and interconnected. "Interconnectivity" means that any two tanks can be directly or indirectly connected to achieve liquid exchange, thereby maintaining a consistent liquid level across all tanks. Of course, in one example, when multiple tanks are interconnected, gas exchange can also be achieved between any two tanks. When multiple tanks are arranged side-by-side horizontally, they are stacked horizontally.

[0074] At least one liquid storage tank is an oxygen reaction tank 300, which provides assembly space for assembling electrode pairs and serves as a reaction site for conducting electrochemical reactions to generate oxygen-deficient or oxygen-enriched gas. At least one liquid storage tank is a liquid volume regulating tank 700, which has a replenishment port 342 connected to an external liquid source to receive liquid from the external liquid source and supply it to at least one oxygen reaction tank 300.

[0075] The liquid level regulating chamber 700 is used for liquid storage. In this embodiment, the liquid level regulating chamber 700 is not used for assembling electrode pairs. Liquid from an external liquid source can enter the liquid level regulating chamber 700 through the liquid replenishment port 342. Since the various liquid storage chambers are interconnected, the liquid entering the liquid level regulating chamber 700 can flow into the oxygen reaction chamber 300 to replenish the electrolyte in the oxygen reaction chamber 300.

[0076] By setting multiple separate and independently arranged horizontally parallel and interconnected liquid storage tanks in the oxygen treatment device 10, and using at least one liquid storage tank as the oxygen reaction tank 300 and at least one liquid storage tank as the liquid volume regulating tank 700, the liquid received by the liquid volume regulating tank 700 can enter the oxygen reaction tank 300. Since the liquid volume regulating tank 700 and the oxygen reaction tank 300 form a communicating vessel, and the liquid level can be consistent based on the communicating vessel principle, the scheme of this embodiment is beneficial to reducing the impact force on the electrode pair during the liquid replenishment process and improving the structural stability of the oxygen treatment device 10.

[0077] In one example, there is one liquid level regulating chamber 700. Using only one liquid level regulating chamber 700 reduces the number of liquid storage chambers and decreases the overall volume of the oxygen treatment unit 10. In another example, there can be two, three, or more liquid level regulating chambers 700. This increases the overall liquid storage capacity of the oxygen treatment unit 10 to some extent and reduces the frequency of liquid replenishment.

[0078] The oxygen reaction chamber 300 can be a single unit, but it can also be configured as multiple units, such as two, three, or more, depending on actual needs. Figure 3 yes Figure 1 The diagram shows a schematic internal structure of the oxygen processing device 10. Figure 4 yes Figure 3 The diagram shows a schematic top view of the internal structure of the oxygen treatment device 10, including a liquid volume regulating chamber 700 and two oxygen reaction chambers 300. When multiple oxygen reaction chambers 300 are provided, the oxygen regulation efficiency of the entire oxygen treatment device 10 can be improved, enabling it to quickly create a suitable preservation atmosphere.

[0079] The interconnection method between the various liquid storage tanks can be configured according to actual needs. In some optional embodiments, each liquid storage tank has a liquid passage connection port 312. The oxygen treatment device 10 also includes at least one liquid passage connection pipe 380, which connects the liquid passage connection ports 312 of two liquid storage tanks, thereby connecting the liquid passages of each liquid storage tank.

[0080] Figure 5 This is an assembly structure diagram of the liquid storage tank of an oxygen treatment device 10 according to an embodiment of the present invention. Figure 6 yes Figure 5 A schematic side view of the assembly structure of the storage tank of the oxygen treatment device 10 shown. Figure 7 yes Figure 5 This is a schematic exploded view of the assembly structure of the liquid storage tank in the oxygen treatment device 10. For example, a liquid connection pipe 380 can connect the liquid connection ports 312 of two adjacent liquid storage tanks. In this case, the two liquid storage tanks located at the beginning and end do not need to be directly connected. The number of liquid connection pipes 380 is one less than the number of liquid storage tanks. Using the scheme of this embodiment, the liquid connection structure is simple and facilitates the addition or removal of liquid storage tanks.

[0081] In another example, adjacent liquid storage tanks can be embedded into or plugged into each other to achieve interconnection of internal spaces.

[0082] Since each liquid storage tank is set up separately and independently, when a liquid passage connection port 312 is opened on the liquid storage tank and the liquid passage connection pipe 380 is used to connect the liquid passage connection port 312 of the liquid storage tank to achieve liquid passage connection, the number of liquid storage tanks can be easily increased or decreased according to actual needs. Therefore, by adopting the solution of this embodiment, the structure and working efficiency of the oxygen treatment device 10 can be flexibly adjusted without the need for adaptive modification of the internal structure of each liquid storage tank, and the whole device has high integration and integrability.

[0083] In one example, the liquid connection port 312 is located in the bottom section of the liquid storage tank. The liquid connection port 312 can be located on the side wall of the liquid storage tank. For example, the liquid connection port 312 can be located at the lower part of the side wall of the liquid storage tank. Using the solution of this embodiment, when the liquid level regulating tank 700 replenishes the oxygen reaction tank 300, the liquid can slowly enter the oxygen reaction tank 300 from the bottom, without scouring the electrode pair, thereby reducing damage to the electrode pair during the replenishment process.

[0084] Each liquid storage tank can have two liquid connection ports 312, which can be connected to two adjacent liquid storage tanks respectively through liquid connection pipes 380. One liquid connection port 312 of each of the two liquid storage tanks located at the beginning and end is in an "idle state" and is not connected to the liquid connection port 312 of the adjacent liquid storage tank. At this time, the liquid connection port 312 in the "idle state" can be sealed with a sealing plug 391 to prevent leakage.

[0085] In some optional embodiments, each liquid storage tank has a gas passage connection port 343 in its top section. The gas passage connection port 343 can be located on the top wall of the liquid storage tank. Alternatively, the gas passage connection port 343 can be located on the side wall of the liquid storage tank, at the upper part of the side wall.

[0086] The oxygen treatment device 10 also includes at least one gas connection pipe 370, which connects the gas connection ports 343 of two liquid storage tanks, thus enabling gas connection between the liquid storage tanks. For example, one gas connection pipe 370 can connect the gas connection ports 343 of two adjacent liquid storage tanks. In this case, the two liquid storage tanks located at the beginning and end do not need to be directly connected. The number of gas connection pipes 370 is one less than the number of liquid storage tanks. Using the scheme of this embodiment, the gas connection structure is simple and facilitates the addition or removal of liquid storage tanks.

[0087] Each liquid storage tank is also provided with a vent 341 that connects to the gas connection port 343 and is used to connect to the external environment. The vent 341 can be provided on any liquid storage tank. The vent 341 connects to the gas connection port 343 of the liquid storage tank and connects to the external environment of each liquid storage tank, thereby enabling each liquid storage tank to be directly or indirectly connected to the external environment by gas.

[0088] By opening a gas passage connection port 343 in the top section of the liquid storage tank and using a gas passage connection pipe 370 to connect each liquid storage tank with a gas passage, and opening a vent 341 in one liquid storage tank that is connected to the gas passage connection port 343 and used to connect to the external environment, an airflow space that connects to the external environment can be connected in series in each liquid storage tank. When the liquid volume regulating tank 700 receives liquid from an external liquid source, the airflow space helps to achieve gas-liquid balance, reduces or avoids gas resistance during the liquid replenishment process, and ensures that the liquid replenishment process is carried out smoothly.

[0089] Using the above scheme, all gases in the storage chambers can be discharged into the external environment through the vent 341. When the electrochemical reaction in the oxygen reaction chamber 300 produces gas, the gases produced in each oxygen reaction chamber 300 can be collected at the vent 341 and discharged centrally, which facilitates centralized treatment and utilization of waste gas. The vent 341 can be located on the top wall of one of the storage chambers. For example, the vent 341 can be located on the top wall of the oxygen reaction chamber 300. In another example, when one vent 341 is provided in one storage chamber, another vent 341 can be provided in another storage chamber to increase the exhaust rate.

[0090] In some optional embodiments, each liquid storage chamber includes an upper chamber 340 and a lower chamber 310 that are interconnected and arranged vertically. The upper chamber 340 is used for gas flow, and the lower chamber 310 is used for liquid storage. As the name suggests, the upper chamber 340 is located above the lower chamber 310. In this embodiment, the upper chamber 340 and the lower chamber 310 can be integrally formed. A gas-liquid communication port is formed between the upper chamber 340 and the lower chamber 310, enabling them to communicate with each other. This arrangement eliminates the need for an assembly structure between the upper chamber 340 and the lower chamber 310 while ensuring the airtightness of the connection structure between them.

[0091] Of course, in another example, the upper compartment 340 and the lower compartment 310 can also be manufactured separately and interconnected. The connection methods include, but are not limited to, plugging in each other and embedding each other.

[0092] A liquid passage connection 312 is provided in the lower compartment 310. For example, the liquid passage connection 312 may be provided in the lower part of the side wall of the lower compartment 310. A gas passage connection 343 is provided in the upper compartment 340. For example, the gas passage connection 343 may be provided in the top wall of the upper compartment 340. A vent 341 is provided in the upper compartment 340 of a liquid storage compartment. For example, the vent 341 may be provided in the upper compartment 340 of an oxygen reaction chamber 300 and located on the top wall of the upper compartment 340.

[0093] When each liquid storage chamber includes an interconnected upper chamber 340 and a lower chamber 310 arranged vertically, by opening a gas passage connection port 343 in the upper chamber 340 and a liquid passage connection port 312 in the lower chamber 310, and by having a vent 341 located in the upper chamber 340 of one liquid storage chamber, since the upper chamber 340 is used for gas flow and the lower chamber 310 for liquid storage, each liquid storage chamber can be divided into a liquid storage area and a gas flow area. Under the premise of achieving both gas pressure balance and liquid storage functions, disordered fluid mixing can be avoided. The gas generated in the oxygen reaction chamber 300 can be directly discharged to the vent 341 through the gas flow space, resulting in high exhaust efficiency. The gas discharged through the vent 341 carries almost no electrolyte.

[0094] In some optional embodiments, the replenishment port 342 is located in the upper chamber 340 of the liquid level regulating chamber 700. The oxygen treatment device 10 also includes a level switch 720, which is disposed in the lower chamber 310 of the liquid level regulating chamber 700, for opening or closing the passage between the lower chamber 310 and the upper chamber 340 of the liquid level regulating chamber 700 according to the movement of the liquid level in the lower chamber 310. Figure 8 yes Figure 3 A schematic perspective view of the liquid level regulating chamber 700 of the oxygen treatment device 10 shown, including a level switch 720. Figure 8 (a) Dashed lines are used to indicate perspective areas. Figure 8 (b) Use solid lines to indicate perspective areas.

[0095] When the liquid level in the liquid regulating chamber 700 decreases, the level switch 720 can move downwards to open the passage between the lower chamber 310 and the upper chamber 340 of the liquid regulating chamber 700. At this time, liquid from an external liquid source can flow into the lower chamber 310 through the upper chamber 340 to increase the liquid level in the liquid regulating chamber 700. When the liquid level in the liquid regulating chamber 700 increases, the level switch 720 can move upwards to its initial position to restore the passage between the lower chamber 310 and the upper chamber 340 of the liquid regulating chamber 700 to the closed state. At this time, liquid from an external liquid source cannot flow into the lower chamber 310.

[0096] When a replenishment port 342 is provided in the upper chamber 340 of the liquid volume regulating chamber 700, and a level switch 720 is installed in the lower chamber 310 of the liquid volume regulating chamber 700, the liquid level in each storage chamber can be kept in dynamic equilibrium under the action of the level switch 720, thereby ensuring the smooth progress of the electrochemical reaction. Furthermore, the liquid stored in the storage chambers can always remain within the lower chamber 310 and will not occupy the airflow space defined by the upper chamber 340.

[0097] The level switch 720 may include a rotating float 721, a rotating shaft 723, and a switch body 722. The rotating shaft 723 is fixed within the lower chamber 310. The switch body 722 is fixedly connected to the rotating float 721, or is an integral part of the rotating float 721. The rotating float 721 is rotatably disposed within the lower chamber 310 around the rotating shaft 723, and floats up and down according to the liquid level within the lower chamber 310, thereby moving the switch body 722 and thus opening or closing the passage between the lower chamber 310 and the upper chamber 340 of the liquid level regulating chamber 700.

[0098] The upper chamber 340 of the liquid volume regulating chamber 700 is provided with an isolation chamber 710 that is connected to the liquid replenishment port 342 and spaced apart from the gas connection port 343. The bottom of the isolation chamber 710 has a liquid outlet 711, which connects to the lower chamber 310 of the liquid volume regulating chamber 700. The isolation chamber 710 being connected to the upper chamber 340 and spaced apart from the gas connection port 343 means that liquid flowing into the upper chamber 340 can only enter the isolation chamber 710 and flow into the lower chamber 310 through the liquid outlet 711 of the isolation chamber 710, without flowing towards the gas connection port 343, and gas flowing towards the gas connection port 343 will not flow into the isolation chamber 710.

[0099] The level switch 720 is used to open or close the passage between the lower chamber 310 and the upper chamber 340 of the liquid volume regulating chamber 700 by moving the opening / closing outlet 711. For example, when the liquid volume in the lower chamber 310 of the liquid volume regulating chamber 700 is sufficient and no replenishment is needed, the switch body 722 of the level switch 720 can precisely close the outlet 711. The rotating float 721, in response to changes in buoyancy, moves the switch body 722 to open or close the outlet 711, thereby opening or closing the passage between the lower chamber 310 and the upper chamber 340 of the liquid volume regulating chamber 700.

[0100] The outlet 711 can penetrate the bottom wall of the isolation chamber 710 and protrude downwards. The switch body 722 can have a sealing plug 391 that is adapted to the bottom opening of the outlet 711 to close the outlet 711.

[0101] Using the above scheme, when the level switch 720 closes the passage between the lower chamber 310 and the upper chamber 340 of the liquid volume regulating chamber 700, the liquid flowing into the upper chamber 340 can be temporarily stored in the isolation chamber 710 without overflowing to other parts of the upper chamber 340, thus keeping the airflow space of the liquid volume regulating chamber 700 dry and unobstructed. The level switch 720 can be configured to ensure that the liquid level in the liquid volume regulating chamber 700 is always lower than that in the upper chamber 340.

[0102] In some optional embodiments, the oxygen treatment device 10 further includes at least one electrode pair. That is, there may be one or more electrode pairs. One electrode pair is fitted to the lower chamber 310 of an oxygen reaction chamber 300. That is, one oxygen reaction chamber 300 is fitted with one electrode pair. The number of electrode pairs is the same as the number of oxygen reaction chambers 300. The liquid flow regulating chamber 700 is not fitted with electrode pairs.

[0103] The electrode pair includes at least one cathode 320 and an anode 330, used to transfer oxygen from external gas into the oxygen reaction chamber 300 via an electrochemical reaction, so that it flows to the vent 341 and is discharged. The external gas may refer to the ambient gas in the environment where each liquid storage chamber is located. The oxygen transferred into the oxygen reaction chamber 300 can flow into the upper chamber 340 of the oxygen reaction chamber 300 and be discharged through the vent 341.

[0104] In other words, under the action of the electrode pair, oxygen in the external gas can be transferred into the oxygen reaction chamber 300 and discharged through the vent 341, creating a low-oxygen atmosphere in each liquid storage chamber. The electrode pair can have one or more cathodes 320. When there are multiple cathodes 320 in the electrode pair, multiple cathodes 320 can share a single anode 330 to improve the efficiency of the electrochemical reaction.

[0105] In some alternative embodiments, multiple liquid storage chambers are arranged at intervals to form airflow gaps. The lower chamber 310 has at least one lateral opening 315. Each lower chamber 310 may have one or more lateral openings 315. The number of lateral openings 315 in the lower chamber 310 of the oxygen reaction chamber 300 is the same as the number of cathodes 320 of the electrode pair mounted on that lower chamber 310.

[0106] A cathode 320 is disposed at a lateral opening 315 to define an electrolysis chamber for holding the electrolyte, together with the lower chamber 310. That is, the cathode 320 closes the lateral opening 315 of the lower chamber 310. The cathode 320 is used to consume oxygen in the gas flowing through the gas flow gap via an electrochemical reaction to produce oxygen-deficient gas. Oxygen in the air can undergo a reduction reaction at the cathode 320: O2 + 2H2O + 4e- - →4OH - In one example, the electrolysis chamber contains an alkaline electrolyte, such as 1–8 mol / L NaOH, the concentration of which can be adjusted according to actual needs.

[0107] Anode 330 and cathode 320 are alternately arranged within the electrolysis chamber, and are used to provide reactants to cathode 320 through an electrochemical reaction, generating oxygen. OH- is produced by cathode 320. - An oxidation reaction can occur at the anode at 330°C, producing oxygen, i.e.: 4OH⁻ -→O2 + 2H2O + 4e - In one example, the cathode 320 and anode 330 can both be plate-shaped. In other examples, the anode 330 can also be transformed into any other suitable shape, such as columnar or arc-shaped.

[0108] The above examples of electrochemical reactions of cathode 320 and anode 330 are merely illustrative. Based on the understanding of the above embodiments, those skilled in the art should be able to easily change the type of electrochemical reaction or extend the structure of the oxygen treatment device 10 to be applicable to other types of electrochemical reactions. All such changes and extensions should fall within the protection scope of this invention.

[0109] By adopting the above scheme, since the liquid storage chambers do not obstruct each other, each liquid storage chamber can contact the external gas. Therefore, the contact area between the cathode 320 assembled in the lower chamber 310 and the external gas can be increased, thereby improving the electrochemical reaction efficiency. The lateral opening 315 can be set on any wall of the lower chamber 310 of the oxygen reaction chamber 300.

[0110] In some optional embodiments, the lateral opening 315 can be disposed on the wall of the lower chamber 310, which has the largest area and is perpendicular to the arrangement direction of the multiple liquid storage chambers. That is, the wall with the largest area of ​​the lower chamber 310 of the liquid storage chamber is perpendicular to the arrangement direction of the multiple liquid storage chambers, and the lateral opening 315 is disposed on the wall with the largest area of ​​the lower chamber 310 of the oxygen reaction chamber 300. This arrangement can increase the working area of ​​the cathode 320, thereby further improving the electrochemical reaction efficiency.

[0111] In some alternative embodiments, the liquid storage compartment is flat, such as a flat cuboid shape. There are two lateral openings 315, which are arranged opposite each other and located on the wall of the lower compartment 310, which has the largest area and is perpendicular to the arrangement direction of the plurality of liquid storage compartments.

[0112] By setting the liquid storage chamber to a flat shape and opening two lateral openings 315 in the lower chamber 310 of the oxygen reaction chamber 300, and by opening the lateral openings 315 on the wall with the largest area perpendicular to the arrangement direction of the multiple liquid storage chambers, the oxygen treatment device 10 can form a dense arrangement structure. At the same time, it ensures that the cathode 320 has a large working area, which helps to reduce the volume of the oxygen treatment device 10 and ensures that the efficiency of the electrochemical reaction is at a high level. Compared with the conventional oxygen treatment device 10, the oxygen treatment device 10 of this embodiment of the invention significantly reduces its volume while maintaining high working efficiency.

[0113] The individual liquid storage compartments can be interconnected to achieve integrated assembly, for example, through snap-fit ​​structures, plug-in structures, or screw-in structures.

[0114] In some optional embodiments, the oxygen treatment device 10 may further include at least one connecting shaft 392. The connecting shaft 392 may be one or more, such as two, three, four, or more. Each liquid storage chamber has at least one through-hole 311 coaxially arranged on its wall. The shaft hole 311 is isolated from the internal space of the liquid storage chamber and allows the connecting shaft 392 to be inserted therein for connection. The number of shaft holes 311 in each liquid storage chamber is the same as the number of connecting shafts 392. One connecting shaft 392 is inserted into the coaxial shaft holes 311 of multiple liquid storage chambers. When the number of connecting shafts 392 and the number of shaft holes 311 in each liquid storage chamber are both multiple, the shaft holes 311 of each liquid storage chamber can be divided into multiple groups, with each group of shaft holes 311 coaxially arranged, and identical connecting shafts 392 passing through the same group of shaft holes 311 in multiple liquid storage chambers.

[0115] In a further example, there are four connecting shafts 392, and each liquid storage tank has four shaft holes 311 on its wall. Two shaft holes 311 are located in the top section of the liquid storage tank, and the other two shaft holes 311 are located in the bottom section of the liquid storage tank.

[0116] Using the above scheme, each liquid storage tank can be assembled into one unit through the connecting shaft 392. The assembly method is simple, and an airflow gap can be formed between adjacent liquid storage tanks.

[0117] In some alternative embodiments, the oxygen treatment device 10 may further include a housing 200. Figure 9 yes Figure 1 The diagram shows a schematic structural view of the housing 200 of the oxygen processing device 10, with the top wall 220 of the housing 200 omitted.

[0118] The housing 200 has an air inlet 231 and an air outlet 221 for connecting to external pipelines, and its interior defines an airflow channel 280 connecting the air inlet 231 and the air outlet 221 for arranging multiple liquid storage tanks. The multiple liquid storage tanks can form an oxygen processing assembly.

[0119] Since the housing 200 has an air inlet 231 and an air outlet 221, the airflow channel 280 can be connected to the space to be adjusted through a pipe, so that the gas in the space to be adjusted can flow into the airflow channel 280 from the air inlet 231 and flow through the cathodes of each electrode pair to form oxygen-deficient gas or oxygen-enriched gas under the action of the electrode pair.

[0120] The electrode pair assembled in the oxygen reaction chamber can be used to process the oxygen in the gas flowing into the gas flow channel 280 from the inlet port 231 to produce oxygen-deficient or oxygen-enriched gas. The oxygen-deficient or oxygen-enriched gas is then discharged through the outlet port 221, thereby regulating the oxygen content of the external space. Here, the external space can refer to the space to be regulated, such as the storage space 610 of the refrigeration / freezing device 20. That is, the inlet port 231 and the outlet port 221 can each be connected to the same space via external piping. Alternatively, in another example, the inlet port 231 and the outlet port 221 can each be connected to different spaces via external piping.

[0121] By providing an air inlet 231 and an air outlet 221 on the housing 200 for connecting to external pipelines, and by placing multiple liquid storage tanks within an airflow channel 280 connecting the air inlet 231 and the air outlet 221, gas from the external space can flow into the airflow channel 280 through the air inlet 231 and be processed by the electrode pair to form oxygen-deficient or oxygen-enriched gas, which is then finally discharged from the air outlet 221. Since gas from the external space can enter the air inlet 231 through pipelines, the oxygen treatment device 10 can be placed in any location, for example, in any location far from the space to be adjusted, which reduces the dependence of the oxygen treatment device 10 on the scene structure, improves the assembly flexibility of the oxygen treatment device 10 in the refrigeration and freezing device 20, and expands the application range of the oxygen treatment device 10.

[0122] The electrode pair can consume or generate oxygen, thereby regulating the oxygen content in the gas flowing through the gas flow channel 280 and achieving the purpose of oxygen treatment.

[0123] In some optional embodiments, the oxygen treatment device 10 may further include an inlet pipe and an outlet pipe. The inlet pipe connects to the inlet port 231 and serves as an external pipe to the inlet port 231. The outlet pipe connects to the outlet port 221 and serves as an external pipe to the outlet port 221. The end of the inlet pipe away from the inlet port 231 may extend to the space to be adjusted. The end of the outlet pipe away from the outlet port 221 may extend to the space to be adjusted. Gas in the space to be adjusted flows into the inlet port 231 through the inlet pipe, flows into the airflow channel 280, then flows out of the airflow channel 280 through the outlet port 221, and flows back to the space to be adjusted through the outlet pipe. The inlet port 231 and the outlet port 221 may be directly or indirectly connected to their respective external pipes.

[0124] In one example, the air inlet 231 and the air outlet 221 may be openings or apertures formed on the housing 200, respectively. In some alternative embodiments, the air inlet 231 is a hollow cylindrical interface formed on the housing 200 and protruding outward; and / or the air outlet 221 is a hollow cylindrical interface formed on the housing 200 and protruding outward.

[0125] When the air inlet 231 is a hollow cylindrical interface formed on the housing 200 and protruding outward, and / or the air outlet 221 is a hollow cylindrical interface formed on the housing 200 and protruding outward, the air inlet 231 and / or the air outlet 221 can be connected to the external pipeline by plugging or nesting, which can reduce the operational difficulty of connecting the oxygen treatment device 10 to the external pipeline.

[0126] In some alternative embodiments, the air inlet 231 and the air outlet 221 are formed on two different walls of the housing 200. This appropriately extends the distance between the air inlet 231 and the air outlet 221, giving the airflow channel 280 a longer airflow path and increasing the flow time of the gas through the airflow channel 280, thereby ensuring sufficient contact with the cathode of the electrode pair. In one example, the air inlet 231 is formed on the bottom wall 210 or a side wall of the housing 200, and the air outlet 221 is formed on the top wall 220 or another side wall of the housing 200. The positions of the air inlet 231 and the air outlet 221 can be interchanged.

[0127] In a further embodiment, the air intake port 231 and the air outlet port 221 are arranged in a longitudinal and transverse offset manner. For example, in one example, the air intake port 231 is formed in the bottom section of the housing 200, and the air outlet port 221 is formed in the top section of the housing 200; further, the air intake port 231 may be located on one transverse side of the housing 200, and further, the air outlet port 221 may be located on the other transverse side of the housing 200. In a further example, the housing 200 is generally hollow cylindrical, such as a hollow prism or a hollow cylinder, the air intake port 231 is disposed on the side wall of the housing 200 and located at the bottom of the housing 200, and the air outlet port 221 is disposed on the top wall 220 of the housing 200 and is located away from the side wall of the housing 200 where the air intake port 231 is disposed, so as to be obliquely opposite to the air intake port 231.

[0128] By setting the air inlet 231 and the air outlet 221 on two different walls of the housing 200, or by further staggering the air inlet 231 and the air outlet 221 in the longitudinal and transverse directions, the gas flow path through the airflow channel 280 can be extended, allowing the gas flowing through the airflow channel 280 to fully contact the cathode of the electrode pair. This results in the oxygen content of the oxygen-deficient gas delivered through the air outlet 221 being at a low level, or the oxygen content of the oxygen-enriched gas delivered through the air outlet 221 being at a high level.

[0129] In some optional embodiments, the oxygen treatment device 10 further includes an airflow actuation device 400 disposed within the airflow channel 280, and having an air intake 411 and an air outlet 412. The air intake 411 is in airflow communication with the air inlet 231, and the air outlet 412 is opposite to the air outlet 221. The airflow actuation device 400 is used to induce airflow from the air inlet 231 into the airflow channel 280 and towards the air outlet 221.

[0130] When an airflow actuator 400 is installed in the airflow channel 280, and the air inlet 411 of the airflow actuator 400 is connected to the air inlet 231, and the air outlet 412 of the airflow actuator 400 is opposite to the air outlet 221, the gas in the external space can flow from the air inlet 231 into the airflow channel 280 and flow to the air outlet 221 under the actuation of the airflow actuator 400, forming an active high-speed airflow circulation structure. This changes the way oxygen is captured by relying solely on the principle of molecular diffusion, and helps to increase the gas flow rate through the airflow channel 280 per unit time, thereby improving the working efficiency of the oxygen treatment device 10.

[0131] In one example, the airflow actuator 400 is a centrifugal fan. Of course, in other examples, the airflow actuator 400 can be replaced with any other fan, such as an axial fan.

[0132] In some alternative embodiments, the airflow channel 280 has a first section 281 connected to the air inlet 231 and having a gradually expanding cross-section, and a second section 282 connected to the air intake 411 of the airflow actuator 400 and having a gradually contracting cross-section. As the gas flows through the first section 281, the cross-sectional area (i.e., the area of ​​the flow section) of the streamline cluster perpendicular to the airflow gradually increases in the gas flow direction. As the gas flows through the second section 282, the cross-sectional area (i.e., the area of ​​the flow section) of the streamline cluster perpendicular to the airflow gradually decreases in the gas flow direction.

[0133] By providing a first section 281 with a gradually expanding cross-section connecting the air inlet 231 and a second section 282 with a gradually narrowing cross-section connecting the air intake 411 of the airflow actuator 400 within the airflow channel 280, the gas flowing through the airflow channel 280 can be guided by the first section 281 and the second section 282 respectively, thereby reducing or avoiding turbulence. Furthermore, under the action of the first section 281, the gas flowing into the air inlet 231 can slow down its flow to prolong the flow time, thus ensuring sufficient contact with the cathode of the electrode pair; under the action of the second section 282, the gas can accelerate its flow and exit the air outlet 221 at a higher speed, thereby improving the gas conditioning efficiency of the space to be regulated.

[0134] In one example, the first segment 281 and the second segment 282 can be directly connected. The oxygen treatment component 300 can be disposed within the first segment 281 or the second segment 282, or at the junction of the first segment 281 and the second segment 282, or simultaneously within both the first segment 281 and the second segment 282.

[0135] In another example, the airflow passage 280 also has a third section 283 connecting the first section 281 and the second section 282. The first section 281 and the second section 282 are located on either side of the third section 283. Figure 9 The dashed lines in the middle show the boundary between the first segment 281 and the third segment 283, as well as the boundary between the second segment 282 and the third segment 283.

[0136] The oxygen treatment assembly 300 is disposed within the third section 283. The cross-sectional area of ​​the third section 283 (i.e., the cross-sectional area of ​​the streamline cluster perpendicular to the airflow) can remain constant in the gas flow direction. This ensures that the gas velocity flowing through the third section 283 does not change significantly, allowing all parts of the oxygen treatment assembly 300 to contact the flowing gas uniformly, thereby uniformly generating oxygen-deficient or oxygen-enriched gas.

[0137] In some alternative embodiments, the oxygen treatment device 10 further includes a positioning mechanism 500, which is fixed within the airflow channel 280 and fixedly connected to the airflow actuation device 400 to fix the airflow actuation device 400 within the airflow channel 280. Figure 10 This is an assembly structure diagram of the positioning mechanism 500 and the airflow actuation device 400 of the oxygen treatment device 10 according to an embodiment of the present invention. Figure 11 yes Figure 10 An exploded schematic diagram of the assembly structure of the positioning mechanism 500 and the airflow actuation device 400.

[0138] When it is necessary to install the airflow actuator 400 into the airflow channel 280, the airflow actuator 400 can be first assembled onto the positioning mechanism 500, and then the positioning mechanism 500 can be assembled into the airflow channel 280, for example, fixed to the inner wall of the housing 200. By using the positioning mechanism 500 to indirectly fix the airflow actuator 400 to the airflow channel 280, the connection operation between the airflow actuator 400 and the housing 200 can be avoided directly within the relatively narrow airflow channel 280.

[0139] In some further embodiments, the airflow actuation device 400 includes a volute 410 and a fan 420 disposed within the volute 410. An air intake 411 and an air outlet 412 are respectively formed on the volute 410.

[0140] The positioning mechanism 500 defines a mounting groove 510 for assembling the volute 410, and also defines a first opening 520 communicating with the mounting groove 510 and the air outlet 412, and a second opening 530 communicating with the mounting groove 510 and the air intake 411. The first opening 520 can be directly opposite the air intake 411 of the volute 410, and the second opening 530 can be directly opposite the air outlet 412 of the volute 410. The volute 410 can be fixed in the mounting groove 510 by screwing.

[0141] By assembling the airflow actuation device 400 into the mounting groove 510 of the positioning mechanism 500, and connecting the mounting groove 510 with the first opening 520 and the second opening 530, the assembly stability between the airflow actuation device 400 and the positioning mechanism 500 can be improved, and the blockage of the air intake 411 and air outlet 412 of the airflow actuation device 400 by the positioning mechanism 500 can be reduced or avoided.

[0142] In some alternative embodiments, the positioning mechanism 500 further defines an outwardly extending claw 540 extending outward from at least a portion of the opening edge of the mounting groove 510. The inner wall of the housing 200 correspondingly defines a slot 241 into which the outwardly extending claw 540 is inserted to achieve engagement.

[0143] By adopting the above solution, the positioning mechanism 500 is fixed in the airflow channel 280 and fixedly connected to the airflow actuator 400, so that the airflow actuator 400 is fixed in the airflow channel 280. When the positioning mechanism 500 is fixed on the inner wall of the housing 200 by the cooperation structure of the claw and the slot 241, the assembly method of the airflow actuator 400 of the oxygen treatment device 10 can be simplified.

[0144] In some alternative embodiments, the protruding claw 540 may be formed by extending radially outward from at least a portion of the opening edge of the mounting groove 510, for example, by extending outward from both lateral ends and the bottom end of the mounting groove 510.

[0145] In one example, the positioning mechanism 500 further defines a flange 550 extending outward from the top edge of the opening of the mounting groove 510. A first screw hole 551 is provided on the flange 550, and a second screw hole 242 corresponding to the first screw hole 551 is formed on the inner wall of the housing 200, so as to fix the flange 550 to the inner wall of the housing 200 by screwing.

[0146] In another example, the positioning mechanism 500 can simultaneously define the protruding claw 540 and the flange 550, thereby using the cooperation structure of the claw and the slot 241 and the screw connection structure to fix the positioning mechanism 500 to the inner wall of the housing 200. This is beneficial to further improve the assembly stability of the airflow actuation device 400 in the airflow channel 280.

[0147] In some alternative embodiments, the outer surface of the cathode of the electrode pair extends along the direction of the streamline cluster of the airflow flowing through the third section 283.

[0148] That is, the extension direction of the outer surface of the cathode 320 of the electrode pair is parallel to the extension direction of the streamline cluster of the gas flow through the third section 283. In this way, the gas flowing through the third section 283 can contact all parts of the outer surface of the cathode 320 of the electrode pair in a time sequence, thereby prolonging the contact time between the cathode 320 of the electrode pair and the gas flow to be processed per unit time.

[0149] In one example, the oxygen discharged through vent 341 can be released directly. In another example, the oxygen discharged through vent 341 can also be delivered to the high-oxygen preservation space of the refrigeration and freezing unit 20 to create a high-oxygen preservation atmosphere and improve the preservation performance of the refrigeration and freezing unit 20.

[0150] With the above structure, the oxygen treatment device 10 can be used to consume the oxygen in the low-oxygen preservation space of the refrigeration and freezing device 20, and the oxygen treatment device 10 can also be used to increase the oxygen in the high-oxygen preservation space of the refrigeration and freezing device 20, thus realizing the functional reuse of the oxygen treatment device 10.

[0151] In some optional embodiments, the housing 200 is also provided with an oxygen vent 222. The oxygen treatment device 10 also includes an oxygen vent pipe 350, one end of which is connected to a vent, and the other end extends from the oxygen vent 222 to the outside of the housing 200, for discharging oxygen discharged through the vent to the outside of the housing 200.

[0152] In some alternative embodiments, the oxygen treatment device 10 may omit the oxygen exhaust pipe 350, and the vent 341 may be a hollow cylindrical interface formed on the upper chamber 340 and protruding outward. The vent 341 may extend to the outside of the housing 200 through the oxygen exhaust port 222 to exhaust the flowing oxygen to the outside of the housing 200.

[0153] In some optional embodiments, the housing 200 is also provided with a liquid injection port 223. The oxygen treatment device 10 also includes a liquid replenishment pipe 360, one end of which is connected to the liquid replenishment port 342, and the other end extends from the liquid injection port 223 to the outside of the housing 200, for guiding liquid from an external liquid source to the lower chamber 310 of the liquid volume regulating chamber 700.

[0154] In some alternative embodiments, the housing 200 has a bottom wall 210 and a top wall 220, as well as a first side wall 230 and a second side wall 240 that extend upward from the bottom wall 210 to the top wall 220 and are disposed opposite to each other.

[0155] An air outlet 221 is formed on the top wall 220 of the housing 200, for example, it can be located on one lateral side of the housing 200. An air inlet 231 is formed on the first side wall 230 of the housing 200, for example, the first side wall 230 can be formed on the other lateral side of the housing 200, and the air inlet 231 can be located at the bottom center of the first side wall 230. An airflow actuation device 400 is fixed to the second side wall 240 of the housing 200 and is located below the air outlet 221.

[0156] With the above structure, under the action of the airflow actuation device 400, the gas flowing through the airflow channel 280 can flow in an upward direction, thus extending the gas flow path through the airflow channel 280.

[0157] The housing 200 also has a third sidewall 250 and a fourth sidewall 260, a first guide surface 271 and a second guide surface 272, and a third guide surface 273 and a fourth guide surface 274.

[0158] The third sidewall 250 and the fourth sidewall 260 extend upward from the bottom wall 210 to the top wall 220, and together with the first sidewall 230 and the second sidewall 240, they enclose a cylinder with a top opening. In one example, the first sidewall 230 is approximately parallel to the second sidewall 240, and the third sidewall 250 is approximately parallel to the fourth sidewall 260.

[0159] The first guide surface 271 and the second guide surface 272 extend from the inner surface of the first sidewall 230 to the inner surface of the third sidewall 250 and the inner surface of the fourth sidewall 260, respectively, and form an obtuse angle with the inner surface of the first sidewall 230 to define the first section 281. The first guide surface 271 may extend from the inner surface of the end section of the first sidewall 230 near the third sidewall 250 to the inner surface of the end section of the third sidewall 250 near the first sidewall 230. The second guide surface 272 may extend from the inner surface of the end section of the first sidewall 230 near the fourth sidewall 260 to the inner surface of the end section of the fourth sidewall 260 near the first sidewall 230.

[0160] The third guide surface 273 and the fourth guide surface 274 extend from the inner surface of the second sidewall 240 to the inner surfaces of the third sidewall 250 and the fourth sidewall 260, respectively, forming an obtuse angle with the inner surface of the second sidewall 240 to define the second section 282. The third guide surface 273 may extend from the inner surface of the end section of the second sidewall 240 near the third sidewall 250 to the inner surface of the end section of the third sidewall 250 near the second sidewall 240. The fourth guide surface 274 may extend from the inner surface of the end section of the second sidewall 240 near the fourth sidewall 260 to the inner surface of the end section of the fourth sidewall 260 near the second sidewall 240.

[0161] In one example, the top wall 220, bottom wall 210, first side wall 230, second side wall 240, third side wall 250, fourth side wall 260, first guide surface 271, second guide surface 272, third guide surface 273, and fourth guide surface 274 of the housing 200 can all be manufactured using a one-piece molding process. With this structure, since the housing 200 can be mass-produced using a one-piece molding process, the assembly process of the entire oxygen treatment device 10 can be simplified, and product consistency can be ensured.

[0162] In one example, the top wall 220 of the housing 200 is detachably provided. The edge of the top wall 220 of the housing 200 can be fixedly connected to the edge of the top opening to achieve a seal. Connection methods include, but are not limited to, screwing, bonding, or snap-fitting. The oxygen vent 222 and the liquid injection port 223 can be respectively provided on the top wall 220 of the housing 200.

[0163] In one example, the top wall 220 of the housing 200 is connected to a flange that extends downward from the edge of the top wall 220 to define the lower opening.

[0164] The vertical length of the folded edge can be adjusted according to actual needs to adapt to different scenarios. The vertical length of the folded edge is approximately equal to the depth of the lower opening. The edge of the lower opening fits against the edge of the top opening of the cylinder, which is enclosed by the first, second, third, and fourth side walls, to achieve a seal.

[0165] Figure 12 This is a schematic structural diagram of an oxygen treatment device 10 according to another embodiment of the present invention. Figure 12 As shown, when the vertical length of the folded edge is small, in order to avoid the inability to assemble the gas connection pipe 370 due to the limited space, a light hole can be opened on the top wall 220 of the housing 200 so that at least a part of the gas connection pipe 370 can extend to the outside of the housing 200 through it.

[0166] This invention also provides a refrigeration and freezing device 20. The refrigeration and freezing device 20 of this invention can be a refrigerator, or a freezer, freezer cabinet, or other refrigeration equipment with low-temperature storage function. Figure 13 This is a schematic structural diagram of a refrigeration and freezing apparatus 20 according to an embodiment of the present invention. The refrigeration and freezing apparatus 20 includes a housing 600 and an oxygen treatment device 10 of any of the above embodiments. The interior of the housing 600 defines a storage space 610. The oxygen treatment device 10 is used to regulate the oxygen content of the storage space 610.

[0167] The electrode pair assembled in the oxygen reaction chamber 300 is used to generate oxygen-deficient or oxygen-enriched gas through electrochemical reaction to provide to the storage space 610, thereby creating a low-oxygen preservation atmosphere and a high-oxygen preservation atmosphere in the storage space 610.

[0168] The outlet port 221 of the housing 200 of the oxygen treatment device 10 is connected to the storage space 610, for example, via a return gas line. Oxygen-deficient or oxygen-enriched gas is delivered through the outlet port 221, thereby regulating the oxygen content of the storage space 610.

[0169] In one example, storage space 610 can be a low-oxygen preservation space; the electrode pair is used to consume oxygen in the gas flowing into airflow channel 280 through an electrochemical reaction to generate oxygen-deficient gas. In a further example, a high-oxygen preservation space can be further defined within the housing 600. This high-oxygen preservation space can be connected via a pipe to an oxygen vent 222 on the housing 200 to receive oxygen from the vent 222.

[0170] In another example, storage space 610 can be a high-oxygen preservation space. An electrode pair is used to generate oxygen via an electrochemical reaction and discharge it through a vent. The vent of the oxygen treatment assembly 300 can be connected to airflow channel 280 and to outlet port 221, which can be connected to the high-oxygen preservation space via a pipe to deliver the oxygen generated by the electrochemical reaction to the high-oxygen preservation space.

[0171] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. An oxygen treatment device, characterized by, The oxygen treatment device comprises: a plurality of separate and independent liquid storage bins arranged in parallel and communicated with each other; a housing, which is provided with an air inlet and an air outlet for connecting external pipelines, and an air flow channel is defined in the housing to communicate the air inlet and the air outlet for arranging the plurality of liquid storage bins; the plurality of liquid storage bins are arranged in the housing and spaced apart to form an air flow gap; wherein at least one of the liquid storage bins is an oxygen reaction bin, which provides an assembly space for assembling an electrode pair and serves as a reaction site for performing an electrochemical reaction to generate oxygen-depleted gas or oxygen-enriched gas; and at least one of the liquid storage bins is a liquid volume adjusting bin, which is provided with a liquid supplement port connected to an external liquid source to receive liquid from the external liquid source and supply the at least one oxygen reaction bin; each of the liquid storage bins is provided with a liquid path communication port; the liquid path communication port is located at the bottom section of the liquid storage bin; and the oxygen treatment device further comprises at least one liquid path communication pipe, which communicates the liquid path communication ports of two liquid storage bins to enable the liquid path communication of the liquid storage bins; the top section of each of the liquid storage bins is provided with an air path communication port; and the oxygen treatment device further comprises at least one air path communication pipe, which communicates the air path communication ports of two liquid storage bins to enable the air path communication of the liquid storage bins; one of the liquid storage bins is further provided with a ventilation port in air path communication with the air path communication port and connected to an external environment; each of the liquid storage bins comprises an upper bin body and a lower bin body arranged in communication and vertically; wherein the upper bin body is used for flowing gas, and the lower bin body is used for storing liquid; each of the oxygen reaction bins is further provided with an electrode pair for transferring oxygen in external gas into the oxygen reaction bin through an electrochemical reaction to flow to the ventilation port and be discharged; the opposite side walls of the lower bin body of each of the oxygen reaction bins are respectively provided with a lateral opening; each of the electrode pairs comprises two cathodes and one anode, wherein each of the cathodes is arranged at one of the lateral openings to jointly define an electrolysis cavity with the lower bin body for containing electrolyte and to consume oxygen in gas flowing through the air flow gap through an electrochemical reaction to generate oxygen-depleted gas; the anode is arranged in the electrolysis cavity and is used to provide reactants to the cathode through an electrochemical reaction and generate oxygen.

2. The oxygen treatment device according to claim 1, wherein the liquid path communication port is provided in the lower bin body; the air path communication port is provided in the upper bin body; and the ventilation port is provided in the upper bin body of one of the liquid storage bins.

3. The oxygen treatment device according to claim 2, wherein the liquid supplement port is provided in the upper bin body of the liquid volume adjusting bin; and the oxygen treatment device further comprises a liquid level switch arranged in the lower bin body of the liquid volume adjusting bin to move according to the liquid level in the lower bin body to open and close the passage between the lower bin body and the upper bin body of the liquid volume adjusting bin.

4. The oxygen treatment device according to claim 3, wherein The upper body of the liquid amount adjusting bin is provided with an isolation bin which is in communication with the liquid supplementing port and is spaced apart from the gas path communication port; the bottom of the isolation bin is provided with a liquid outlet which is in communication with the lower body of the liquid amount adjusting bin; and The liquid level switch is used to open and close the liquid outlet by moving, so as to open and close the passage between the lower body and the upper body of the liquid amount adjusting bin.

5. The oxygen treatment device of claim 2, wherein The liquid storage bins are flat in shape; and The lateral opening is located on the wall of the lower body which is perpendicular to the arrangement direction of the liquid storage bins and has the largest area.

6. The oxygen treatment device of claim 1, wherein, Further comprising: At least one connecting shaft; and The wall of each liquid storage bin is provided with at least one shaft hole which is coaxially arranged and is spaced apart from the internal space of the liquid storage bin, and the connecting shaft is inserted into the shaft hole, so as to realize connection.

7. The oxygen treatment device of claim 6, wherein The connecting shafts are four, and the wall of each liquid storage bin is provided with four shaft holes; wherein Two of the shaft holes are located at the top section of the liquid storage bin, and the other two shaft holes are located at the bottom section of the liquid storage bin.

8. The oxygen treatment device of claim 1, wherein, Further comprising: An air flow promoting device is arranged in the air flow channel, and has a suction port and an air outlet; wherein The suction port is in air flow communication with the air inlet interface, and the air outlet is opposite to the air outlet interface; and the air flow promoting device is used to promote the air flow which flows into the air flow channel from the air inlet interface and flows to the air outlet interface.

9. A cold appliance, characterized in Comprising: A box body which defines a storage space inside; And The oxygen treatment device of any one of claims 1-8 is used to adjust the oxygen content of the storage space.

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