Refrigerator

Abstract

The present application discloses a refrigerator, comprising a refrigerator body, a door body, and a fresh-keeping module, wherein the door body is connected to the refrigerator body; the fresh-keeping module comprises at least one fresh-keeping space and an air-conditioning apparatus that is in airflow communication with the fresh-keeping space; the air-conditioning apparatus is configured to change the proportion of a specific gas in the fresh-keeping space by means of an electrochemical reaction; the fresh-keeping space and / or the air-conditioning apparatus are / is arranged on the door body, or the air-conditioning apparatus is arranged on the top of the refrigerator body. When the fresh-keeping module is used to implement air-conditioning and fresh-keeping, the air-conditioning apparatus and / or the fresh-keeping space are / is arranged on the door body or on the top of the refrigerator body, thereby reducing waste of the storage space in the refrigerator body.

Description

refrigerator

[0001] This application is based on and claims priority to Chinese patent applications with application numbers 202422731084.8 and 202422726259.6, filed on November 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of refrigeration equipment, and more particularly to a refrigerator. Background Technology

[0003] Modified atmosphere storage, as an advanced technology that effectively extends the shelf life of food by adjusting the proportion of gases (such as oxygen) in the environment (such as the storage space), thus achieving the purpose of preservation, is increasingly widely used. Therefore, refrigeration and freezing devices with this function are also highly favored by the market.

[0004] Different types of food require different modified atmosphere storage environments. For example, fruits and vegetables respire more rapidly in high-oxygen environments, leading to a decrease in organic matter and nutrient loss; therefore, they are better suited for storage in low-oxygen environments. Conversely, for meats, low-oxygen environments may affect their color and texture, so they need to be stored in high-oxygen environments to maintain optimal quality.

[0005] To achieve modified atmosphere storage, refrigerators typically require a modified atmosphere device (MAP) to treat specific gas components, thereby increasing or decreasing their concentration. Optionally, a MAP device includes a housing, an electrolyte reservoir within the housing, a cathode plate, and an anode plate. These components contact the air in the space through the cathode, causing oxygen to undergo a reduction reaction at the cathode, specifically: O₂ + 2H₂O + 4e⁻. - →4OH - Meanwhile, an oxidation reaction occurs at the anode, producing oxygen, with the reaction equation: 4OH⁻. - →O2 + 2H2O + 4e - .

[0006] However, controlled atmosphere devices and preservation spaces are usually located inside the refrigerator, such as in the refrigerator compartment, which results in a waste of storage space inside the refrigerator.

[0007] More specifically, the controlled atmosphere device is installed next to the fresh food compartment, which will occupy the storage space inside the refrigerator or the foaming space between the refrigerator body and the inner liner, thus taking up the refrigerator's storage space or affecting the refrigerator's cooling performance.

[0008] In view of this, it is necessary to provide an improved technical solution to solve the above problems.

[0009] Any prior art mentioned in the specification does not imply confirmation or suggestion that such prior art constitutes part of the general common knowledge in any jurisdiction, or that it can be reasonably expected that such prior art will be understood, regarded as relevant and / or combined with other prior art by a person skilled in the art. Summary of the Invention

[0010] The purpose of this application is to provide a refrigerator that reduces the waste of storage space inside the refrigerator.

[0011] To achieve one of the above-mentioned objectives, one embodiment of this application provides a refrigerator, comprising:

[0012] Box;

[0013] The door body is connected to the housing body;

[0014] A preservation module, comprising at least one preservation space and a modified atmosphere device with airflow connected to the preservation space, the modified atmosphere device being configured to change the proportion of a specific gas in the preservation space through an electrochemical reaction.

[0015] The preservation space and / or modified atmosphere device are provided on the door.

[0016] As a further improvement of one embodiment of this application, the door body includes a door shell forming a door chamber and a door panel connecting the door shell and covering the door chamber, wherein the controlled atmosphere device is disposed inside the door chamber.

[0017] As a further improvement of one embodiment of this application, the preservation module includes a preservation box corresponding to a preservation space, each preservation space being formed in the corresponding preservation box, and the preservation box being disposed in the doorway room.

[0018] As a further improvement of one embodiment of this application, the housing has a storage chamber, and the door shell has an air inlet duct and a return air duct communicating with the door chamber, the air inlet duct and the return air duct respectively communicating with the storage chamber.

[0019] As a further improvement of one embodiment of this application, the preservation module includes a first preservation box and at least one second preservation box, wherein the proportion of a specific gas in the preservation space of the first preservation box is greater than the proportion of a specific gas in the preservation space of the second preservation box, and the first preservation box and the second preservation box are located on the same side of the modified atmosphere device.

[0020] As a further improvement of one embodiment of this application, the modified atmosphere device has a reaction space, and the preservation module further includes a docking structure. After the preservation box is docked with the modified atmosphere device, the airflow of the docking structure connects the preservation space and the reaction space.

[0021] The docking structure includes a valve assembly disposed on the modified atmosphere device and a triggering structure disposed on the food storage container. The valve assembly has a connected state that abuts against the triggering structure and a closed state that is not abutting against the triggering structure. In the connected state, a docking space is formed between the triggering structure and the valve assembly, and the airflow of the reaction space is connected to the docking space.

[0022] As a further improvement of one embodiment of this application, the modified atmosphere device has an air exchange port that exposes the reaction space, and the valve assembly includes a movable rod that matches the air exchange port, a trigger block that connects to the movable rod, and an elastic element and a sealing ring sleeved on the movable rod. In the closed state, the elastic element abuts against the trigger block and the modified atmosphere device so that the sealing ring blocks the air exchange port.

[0023] As a further improvement of one embodiment of this application, the food storage box has an interface that exposes the food storage space, and the food storage module further includes a sealing plug that cooperates with the interface. The sealing plug has a limiting part located in the food storage space, a blocking part located outside the food storage space, and a movable part connecting the limiting part and the blocking part. In the connected state, the limiting part abuts against the food storage box, and the blocking part disengages from the food storage box, so that the interface connects the food storage space and the docking space.

[0024] As a further improvement of one embodiment of this application, the valve assembly further includes a valve seat that slides with the trigger block, and the triggering structure includes a trigger cover that matches the valve seat and a trigger boss that connects to the trigger cover. In the connected state, the trigger cover covers the valve seat, and the trigger boss abuts against the trigger block.

[0025] As a further improvement of one embodiment of this application, the controlled atmosphere device includes a cathode and an anode arranged at intervals, the cathode being configured to consume oxygen through an electrochemical reaction, and the anode being configured to provide reactants to the cathode and generate oxygen through an electrochemical reaction.

[0026] As a further improvement of one embodiment of this application, the preservation module includes a first preservation space and a second preservation space space spaced apart from each other. The first preservation space space is formed in the doorway chamber and located on one side of the modified atmosphere device, and the second preservation space space is formed in the doorway chamber and located on the opposite side of the modified atmosphere device.

[0027] As a further improvement of one embodiment of this application, the proportion of a specific gas in the first preservation space is greater than the proportion of a specific gas in the second preservation space. The modified atmosphere device has a first ventilation port and at least one second ventilation port. The first ventilation port is exposed in the first preservation space, and the second ventilation port is exposed in the second preservation space.

[0028] As a further improvement of one embodiment of this application, the box has a storage chamber, the door covers at least a portion of the storage chamber, the preservation module includes a preservation box, one of the modified atmosphere device and the preservation box is disposed in the storage chamber, and the other of the modified atmosphere device and the preservation box is disposed on the side of the door facing the storage chamber.

[0029] As a further improvement of one embodiment of this application, the box has a storage chamber, the door covers at least a portion of the storage chamber, and includes a door shell forming a storage cavity and a door panel connecting the door shell and covering the storage cavity on the side opposite to the storage chamber. The preservation module includes a preservation box, the modified atmosphere device is disposed in the storage chamber, and the preservation box is disposed in the storage cavity.

[0030] As a further improvement of one embodiment of this application, the preservation module further includes a gas pipeline that connects the airflow of the modified atmosphere device and the preservation box, and the refrigerator further includes a hinge box that connects to the cabinet and a hinge rod that connects to the door and is at least partially inserted into the hinge box, and a portion of the gas pipeline is inserted into the hinge rod.

[0031] Compared with the prior art, the beneficial effect of this application is that when using the preservation module to achieve modified atmosphere preservation, setting the modified atmosphere device and / or preservation space on the door can reduce the waste of storage space inside the cabinet.

[0032] The purpose of this application is also to provide a refrigerator that addresses the shortcomings of the prior art.

[0033] To achieve the above objectives, this application provides a refrigerator, including a cabinet and a door pivotally connected to the cabinet. The cabinet includes an outer shell, an inner liner located within the outer shell, a foam layer located between the outer shell and the inner liner, a plurality of storage compartments located within the inner liner, and a plurality of fresh-keeping compartments disposed within any of the storage compartments. The refrigerator also includes a modified atmosphere device disposed on the top of the cabinet. The modified atmosphere device includes an electrolysis box, electrodes located within the electrolysis box, an electrolyte containing chamber, and a product gas gathering chamber. The product gas gathering chamber is connected to at least one of the fresh-keeping compartments.

[0034] As a further improvement of one embodiment of this application, the fresh-keeping compartment includes a first fresh-keeping compartment, and the refrigerator further includes a product gas gathering chamber and an oxygen-enriched oxygen supply pipe.

[0035] As a further improvement of one embodiment of this application, the modified atmosphere device includes a mounting box fixed to the top of the housing, and the electrolysis box is fixed inside the mounting box.

[0036] As a further improvement of one embodiment of this application, the fresh-keeping compartment further includes a second fresh-keeping compartment, and the refrigerator further includes an air outlet pipe connecting the inner cavity of the mounting box and the second fresh-keeping compartment, and an air inlet pipe connecting the inner cavity of the mounting box and the second fresh-keeping compartment.

[0037] As a further improvement of one embodiment of this application, an air inlet is provided at the position where the mounting box communicates with the air outlet pipe, and a fan is provided at the position of the air inlet on the mounting box.

[0038] As a further improvement of one embodiment of this application, the end of the air outlet pipe that communicates with the air inlet is configured as an expansion section, and the diameter of the expansion section gradually increases from the end away from the air inlet towards the end closer to the air inlet.

[0039] As a further improvement of one embodiment of this application, the refrigerator also includes a liquid replenishment box disposed inside the refrigerator body and a liquid inlet pipe connecting the liquid replenishment box and the electrolyte containing cavity.

[0040] As a further improvement of one embodiment of this application, the storage chamber is provided with a clearance space on the side near the door, the inner liner is provided with a mounting groove recessed towards the foaming layer in the clearance space, the liquid replenishment box is disposed in the mounting groove, and the upper edge of the liquid replenishment box is flush with the inner surface of the inner liner.

[0041] The mounting box is equipped with a drive pump connected to the liquid inlet pipe to drive liquid from the replenishment box to the electrolyte container.

[0042] As a further improvement of one embodiment of this application, the replenishment box is provided with a liquid filling port.

[0043] As a further improvement of one embodiment of this application, the mounting box includes a first part and a second part that are connected to each other, wherein the width of the first part is greater than the width of the second part.

[0044] Compared with the prior art, this application adopts a modified atmosphere device that is placed on the top of the cabinet, so that the modified atmosphere device does not occupy the space in the inner liner, ensuring the storage space in the storage compartment of the refrigerator, and at the same time, it does not occupy the insulation space of the foam layer, so as not to affect the preservation effect of the refrigerator. Furthermore, the refrigerator has a better insulation effect and can also ensure better cooling and preservation functions.

[0045] The term “comprise” as used herein, and variations thereof such as “comprises”, “comprised”, “comprising”, “including”, and “containing”, do not exclude other features, components, elements, or steps unless the context clearly requires otherwise. Attached Figure Description

[0046] Figure 1 is a cross-sectional schematic diagram of the refrigerator in this application;

[0047] Figure 2 is a perspective view of the preferred first embodiment of this application;

[0048] Figure 3 is a cross-sectional view at point AA in Figure 2;

[0049] Figure 4 is a cross-sectional view of the connection between the food storage box and the modified atmosphere device in Figure 2, where the valve assembly is in a connected state;

[0050] Figure 5 is a cross-sectional view of the controlled atmosphere device in Figure 2, where the valve assembly is in a closed state;

[0051] Figure 6 is a cross-sectional view of the food storage container in Figure 2;

[0052] Figure 7 is a perspective view of a preferred second embodiment of this application;

[0053] Figure 8 is a cross-sectional view at point BB in Figure 7;

[0054] Figure 9 is a perspective view of a preferred third embodiment of this application;

[0055] Figure 10 is a perspective view of the preferred fourth embodiment of this application;

[0056] Figure 11 is a perspective view of the preferred fifth embodiment of this application;

[0057] Figure 12 is a cross-sectional view at CC in Figure 11;

[0058] Figure 13 is a three-dimensional schematic diagram of the connection between the box and the door in this application;

[0059] Figure 14 is a cross-sectional view of the hinge box when the door is open in Figure 13;

[0060] Figure 15 is a cross-sectional view of the hinge box when the door is closed in Figure 13;

[0061] Figure 16 is an isometric view of a refrigerator according to the sixth embodiment of this application;

[0062] Figure 17 is an axonometric view of a portion of the structure in the refrigerator according to the sixth embodiment of this application from another perspective;

[0063] Figure 18 is an enlarged structural diagram of part A in Figure 17;

[0064] Figure 19 is a rear view of the controlled atmosphere device, pipes, and storage chamber in the sixth embodiment of this application;

[0065] Figure 20 is a cross-sectional view along the BB direction in Figure 19;

[0066] Figure 21 is an exploded view of the mounting box in the sixth embodiment of this application;

[0067] Figure 22 is a top view of the internal structure of the mounting box in the sixth embodiment of this application;

[0068] Figure 23 is an enlarged schematic diagram of the structure of part C in Figure 16. Detailed Implementation

[0069] The present application will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this application.

[0070] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0071] Furthermore, it should be understood that although the terms "first," "second," etc., can be used herein to describe various elements or structures, the objects described should not be limited by these terms. These terms are only used to distinguish these objects from one another. For example, a first food storage container can be called a second food storage container, and similarly, a second food storage container can be called a first food storage container; this does not depart from the scope of protection of this application.

[0072] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0073] First Embodiment

[0074] Referring to Figures 1 to 6, a preferred first embodiment of this application provides a refrigerator equipped with a preservation module 30, which adjusts the proportion of a specific gas (e.g., oxygen) in the preservation spaces 301 and 302 to meet different preservation requirements, such as low temperature and low oxygen or low temperature and high oxygen preservation requirements.

[0075] Referring to Figures 1 and 2, a refrigerator specifically includes a cabinet 10, a door 20, and a preservation module 30, with the door 20 connected to the cabinet 10. In this embodiment, the cabinet 10 has a storage compartment 101, and the door 20 is pivotally connected to the cabinet 10 for opening or closing the storage compartment 101. The refrigerator also includes a refrigeration system that provides cooling capacity to the storage compartment, the refrigeration system including a compressor, condenser, evaporator, etc., connected by pipes.

[0076] Referring to Figure 3, specifically, the preservation module 30 includes at least one preservation space 301, 302 and a modified atmosphere device 303 with airflow communication between the preservation spaces 301, 302. The modified atmosphere device 303 is configured to change the proportion of a specific gas in the preservation spaces 301, 302 through an electrochemical reaction. In this embodiment, the preservation module 30 uses the modified atmosphere device 303 to adjust the proportion of a specific gas in the preservation spaces 301, 302, that is, by consuming or increasing the composition of the specific gas in the modified atmosphere device 303 through an electrochemical reaction, and by connecting the modified atmosphere device 303 with the preservation spaces 301, 302 through airflow communication, thereby adjusting the proportion of the specific gas in the preservation spaces 301, 302.

[0077] Specifically, the preservation spaces 301, 302 and / or the modified atmosphere device 303 are disposed on the door 20. In this embodiment, it is preferable that the preservation spaces 301, 302 and the modified atmosphere device 303 are all disposed on the door 20. Compared with the solution of "preservation spaces 301, 302 or modified atmosphere device 303 disposed on the door 20", this further saves storage space inside the refrigerator, and also shortens or eliminates the gas pipeline between the modified atmosphere device 303 and the preservation spaces 301, 302, simplifying the structure of the refrigerator and reducing manufacturing costs.

[0078] Specifically, the door 20 includes a door shell 202 forming a door chamber 201 and a door panel 203 connecting the door shell 202 and covering the door chamber 201. In this embodiment, the door panel 203 is pivotally connected to the door shell 202 and is used to open or close the door chamber 201. The door panel 203 can be transparent, allowing the user to observe the state of the food inside the door chamber 201 (e.g., its location, freshness, etc.) without opening the door panel 203, and to quickly open the door panel 201 to retrieve items from the door chamber 201, making the operation convenient.

[0079] Furthermore, the controlled atmosphere device 303 is disposed within the doorway chamber 201. In this embodiment, the controlled atmosphere device 303 is located within the doorway chamber 201 and can exchange heat with the interior of the doorway chamber 201 to obtain cooling capacity. This prevents temperature fluctuations inside the preservation spaces 301 and 302 when the controlled atmosphere device 303 communicates with the preservation spaces 301 and 302 via airflow, thus ensuring the stability of the internal temperature of the preservation spaces 301 and 302.

[0080] In a different embodiment not shown, the controlled atmosphere device 303 may also be disposed within the foam layer of the door body 20, which can save the internal space of the door chamber 201 and reduce the influence of external environmental factors on the controlled atmosphere device 303.

[0081] Specifically, the preservation module 30 includes preservation boxes 304 and 305 that correspond one-to-one with the preservation spaces 301 and 302, with each preservation space 301 and 302 formed within its corresponding preservation box 304 and 305. In this embodiment, each preservation space 301 and 302 is formed within an independent preservation box 304 and 305; for example, the first preservation space 301 is formed within the first preservation box 304, and the second preservation space 302 is formed within the second preservation box 305. Each preservation space 301 and 302 is defined by a separate and corresponding preservation box 304 and 305, which can prevent gas flow between the preservation spaces 301 and 302, and between the preservation spaces 301 and 302 and the door chamber 201, thus ensuring the stability of the specific gas composition inside the preservation spaces 301 and 302.

[0082] Specifically, food storage containers 304 and 305 are disposed within the doorway compartment 201. In this embodiment, food storage containers 304 and 305 are disposed within the doorway compartment 201, enabling them to exchange heat with the interior of the doorway compartment 201, thereby cooling the food storage spaces 301 and 302 to meet the low-temperature requirements for food preservation.

[0083] Specifically, the door shell 202 has an air inlet 2021 and a return air inlet 2022 exposed within the door chamber 201, with the air inlet 2021 located above the return air inlet 2022. In this embodiment, the door chamber 201 adopts an "upper air inlet, lower air return" airflow design, which satisfies the sinking of cold air and allows cold air to circulate throughout the entire door chamber 201, effectively cooling the food storage containers 304 and 305 and the controlled atmosphere device 303. The air inlet 2021 and the return air inlet 2022 are located on the same side of the door chamber 201, for example, on the hinge side of the door body 20.

[0084] Specifically, the door shell 202 also has an air duct 2023 connecting the air inlet 2021 and the return air inlet 2022. Cold air in the air duct 2023 flows into the door compartment 201 through the air inlet 2021. After exchanging heat with the food storage containers 304 and 305 in the door compartment 201, the cold air flows back into the air duct 2023 through the return air inlet 2022, realizing airflow circulation between the return air duct 2023 and the door compartment 201, and completing the cold exchange between the air duct 2023 and the door compartment 201.

[0085] Furthermore, the airflow through the air duct 2023 is connected to the storage chamber 101. In this embodiment, the door shell 202 also has a heat exchange port 208 exposed in the air duct 2023. After the door 20 is closed, the heat exchange port 208 is exposed in the storage chamber 101. At this time, the inter-door chamber 201 can achieve airflow communication with the storage chamber 101 through the air duct 2023 and the heat exchange port 208, and use the cold energy in the storage chamber 101 to cool the inter-door chamber 201, thereby cooling the preservation spaces 301 and 302.

[0086] Furthermore, the refrigerator also includes a fan installed in the air duct 2023. The fan can accelerate the air flow in the air duct 2023, that is, accelerate the air flow inside the door compartment 201 and accelerate the air flow between the door compartment 201 and the storage compartment 101, thereby accelerating the cooling of the door compartment 201.

[0087] Specifically, the air duct 2023 has an inlet air duct 20231 and a return air duct 20232 connected to the intercom 201, and the inlet air duct 20231 and the return air duct 20232 are respectively connected to the storage chamber 101. In this embodiment, when the door 20 is closed, under the action of the fan, the cold air in the storage chamber 101 flows into the air duct 2023 through the inlet air duct 20231 and flows into the intercom 201 from the air inlet 2021; the gas containing the cold air exchanges heat in the intercom 201, flows back into the return air duct 20232 from the return air inlet 2022, and flows back into the storage chamber 101 through the air duct 2023. After this repetition, heat exchange between the storage chamber 101 and the intercom 201 is achieved.

[0088] In some different embodiments not shown, the air duct 2023 obtains cooling capacity by being connected to the interior of the storage chamber 101 via piping. Alternatively, the air duct 2023 may also obtain cooling capacity by being directly exposed to the interior of the storage chamber 101, i.e., eliminating the heat exchange port 208, and the cooling capacity in the storage chamber 101 is radiated into the air duct 2023 through direct cooling. Alternatively, a separate evaporator or air duct may be used to cool the air duct 2023.

[0089] Furthermore, the preservation module 30 includes a first preservation container 304 and at least one second preservation container 305. In this embodiment, the preservation module 30 may include one first preservation container 304 and one or more second preservation containers 305. Preferably, the preservation module 30 includes one first preservation container 304 and two second preservation containers 305. The proportion of a specific gas in the preservation space 301 of the first preservation container 304 is different from the proportion of a specific gas in the preservation space 302 of the second preservation container 305.

[0090] For example, the proportion of a specific gas (e.g., oxygen) in the preservation space 301 (e.g., the first preservation space) of the first preservation container 304 is greater than the proportion of a specific gas (e.g., oxygen) in the preservation space 302 (e.g., the second preservation space) of the second preservation container 305.

[0091] Referring to Figure 4, specifically, the modified atmosphere device 303 has a first ventilation port 3032 that is in airflow communication with the first food storage container 304 and a second ventilation port 3033 that is in airflow communication with the second food storage container 305. When the first food storage container 304 is in airflow communication with the first ventilation port 3032 of the modified atmosphere device 303, the composition of a specific gas inside it is increased through the first ventilation port 3032; when the second food storage container 305 is in airflow communication with the second ventilation port 3033 of the modified atmosphere device 303, the composition of the specific gas inside it is consumed through the second ventilation port 3033.

[0092] In some other embodiments, the preservation module 30 may also include only a first preservation container 304 or a second preservation container 305. One of the first ventilation port 3032 and the second ventilation port 3033 is connected to the interior of the corresponding preservation container 304 or 305 for airflow communication, thereby consuming or increasing specific gas components within the preservation container 304 or 305. The other of the first ventilation port 3032 and the second ventilation port 3033 is connected to the external environment for airflow communication.

[0093] Preferably, the first food storage container 304 contains a higher proportion of a specific gas, that is, a higher proportion of the specific gas in the air, such as a high-oxygen environment; the second food storage container 305 contains a lower proportion of the specific gas, that is, a lower proportion of the specific gas in the air, such as a low-oxygen environment.

[0094] Furthermore, the first food storage container 304 and the second food storage container 305 are located on the same side of the modified atmosphere device 303. In this embodiment, as shown in Figure 2, the first food storage container 304 and the second food storage container 305 are both located on the same side of the modified atmosphere device 303, making full use of the space on one side of the modified atmosphere device 303 and making reasonable use of the internal space of the doorway 201, thus avoiding waste of space.

[0095] Furthermore, the controlled atmosphere device 303 includes a cathode and an anode spaced apart. In this embodiment, the cathode is connected to the negative terminal of the power supply and performs a reduction reaction. The anode is connected to the positive terminal of the power supply and performs an oxidation reaction. The gap between the cathode and the anode forms a reaction space for holding an electrolyte. The reaction space can hold an alkaline electrolyte, such as 0.1–8 mol / L NaOH or KOH, the concentration of which can be adjusted according to actual needs.

[0096] Specifically, the cathode is configured to consume oxygen through an electrochemical reaction, and the anode is configured to provide reactants to the cathode and generate oxygen through an electrochemical reaction. In this embodiment, oxygen is preferred. Therefore, the oxygen in the preservation spaces 301 and 302 can undergo a reduction reaction at the cathode, i.e.: O2 + 2H2O + 4e - →4OH - The OH- ions generated at the cathode can undergo an oxidation reaction at the anode, producing oxygen which is then transported to the preservation spaces 301 and 302, i.e.: 4OH- - →O2 + 2H2O + 4e - The anode utilizes OH... - During the electrochemical reaction, reactants, such as electrons (e), are also provided to the cathode. - .

[0097] Specifically, the first vent 3032 is connected to the anode, thereby outputting the oxygen produced by the anode. The second vent 3033 is connected to the cathode, thereby consuming the oxygen from the second vent 3033.

[0098] For example, when the preservation module 30 includes only one preservation box 304 or 305, that is, when the preservation module 30 has only one preservation space 301 or 302, the oxygen in the preservation space can be consumed by the cathode, or the oxygen can be supplied to the preservation space by the anode. When the preservation module 30 includes a first preservation box 304 and a second preservation box 305, the oxygen can be supplied to the first preservation box 304 by the anode, while the oxygen in the second preservation box 305 is consumed by the cathode.

[0099] In some other different embodiments, the controlled atmosphere device 303 may also employ other types of electrochemical reactions and be used to process other types of specific gas components, such as electrochemical reactions for generating or consuming carbon dioxide, electrochemical reactions for generating or consuming nitrogen, electrochemical reactions for generating or consuming ethylene, etc.

[0100] Thus, as the first ventilation port 3032 continuously increases the oxygen content inside the first preservation container 304, a high-oxygen environment is created inside the first preservation container 304, which can preserve chilled meat and fresh-cut fruits and vegetables. As the second ventilation port 3033 continuously consumes the oxygen content inside the second preservation container 305, a low-oxygen environment is created inside the second preservation container 305, which can extend the shelf life of fruits, vegetables and other food items.

[0101] Referring further to Figure 4, the modified atmosphere device 303 further includes a reaction space 3031, and the preservation module 30 also includes a docking structure 306. After the preservation containers 304 and 305 are docked with the modified atmosphere device 303, the docking structure 306 provides airflow communication between the preservation spaces 301 and 302 and the reaction space 3031. In this embodiment, after the preservation containers 304 and 305 are docked with the modified atmosphere device 303, the docking structure 306 enables airflow communication between the preservation spaces 301 and 302 of the preservation containers 304 and 305 and the reaction space 3034 of the modified atmosphere device 303. This increases the content of a specific gas (i.e., oxygen) in the first preservation container 304 or consumes the content of a specific gas (i.e., oxygen) in the second preservation container 305.

[0102] Specifically, the docking structure 306 includes a valve assembly 3061 disposed on the modified atmosphere device 303 and a triggering structure 3062 disposed on the food storage containers 304 and 305. The valve assembly 3061 has a connected state that abuts against the triggering structure 3062 and a closed state that is not abutting against the triggering structure 3062. In the connected state, a docking space 3063 is formed between the triggering structure 3062 and the valve assembly 3061, and the airflow of the reaction space 3031 is connected to the docking space 3063.

[0103] In other embodiments not shown, the docking structure 306 can also be in other ways, such as the food storage containers 304 and 305 and the modified atmosphere device 303 achieving airflow communication through threaded connection of threaded tubes and threaded holes; or, the food storage containers 304 and 305 and the modified atmosphere device 303 achieving airflow communication through interference fit, as long as airflow communication is achieved after the food storage containers 304 and 305 are docked with the modified atmosphere device 303.

[0104] Furthermore, in this embodiment, after the food preservation boxes 304 and 305 are installed in the modified atmosphere device 303, the airflow is connected by the cooperation between the trigger structure 3062 and the valve assembly 3061. That is, in the connected state, the reaction space 3031 and the docking space 3063 are connected to each other, thereby connecting the food preservation spaces 301 and 302 through the docking space 3063, and realizing airflow connection.

[0105] Furthermore, the preservation module 30 also includes a manual switch 307 mounted on the modified atmosphere device 303, which is a power switch for controlling the start and stop of the modified atmosphere device 303, such as a touch or press switch, so that the user can start and stop the gas treatment operation according to the usage needs. A sensor switch can also be installed on the modified atmosphere device 303, so that the modified atmosphere device 303 can start working after the preservation containers 304 and 305 are connected to the modified atmosphere device 303 (for example, after the trigger structure 3062 and the valve assembly 3061 cooperate).

[0106] Referring to Figure 5, the modified atmosphere device 303 further includes ventilation ports 3032 and 3033 that expose the reaction space 3031. The valve assembly 3061 includes a movable rod 30611 that matches the ventilation ports 3032 and 3033, a trigger block 30612 connected to the movable rod 30611, and an elastic element 30613 and a sealing ring 30614 sleeved on the movable rod 30611. In this embodiment, the trigger block 30612 and the sealing ring 30614 are disposed opposite to each other at both ends of the movable rod 30611, that is, the trigger block 30612 is located outside the reaction space 3031, and the sealing ring 30614 is located inside the reaction space 3031.

[0107] Specifically, in the closed state, the elastic element 30613 abuts against the trigger block 30612 and the atmosphere control device 303, so that the sealing ring 30614 blocks the ventilation ports 3032 and 3033. In this embodiment, in the closed state, the elastic force generated by the elastic deformation of the elastic element 30613 drives the trigger block 30612 away from the atmosphere control device 303, thereby driving the sealing ring 30614 towards the ventilation ports 3032 and 3033, and then blocking the ventilation ports 3032 and 3033, preventing the gas in the reaction space 3031 from communicating with the outside through the ventilation ports 3032 and 3033. Thus, after the food storage containers 304 and 305 are no longer in contact with the atmosphere control device 303, the valve assembly 3061 automatically blocks the ventilation ports 3032 and 3033.

[0108] Referring to Figure 6, the food storage container 305 further includes an interface 3051 that exposes the food storage space 302, and the food storage module 30 also includes a sealing plug 308 that mates with the interface 3051. In this embodiment, since the oxygen treatment device 303 can consume the oxygen inside the second food storage container 305, its internal pressure is lower than atmospheric pressure. Therefore, by providing a sealing plug 308 to the interface 3051 of the second food storage container 305, atmospheric pressure is used to seal the second food storage container 305, which is detached from the modified atmosphere device 303.

[0109] Specifically, the sealing plug 308 has a limiting part 3081 located in the preservation space 302, a blocking part 3082 located outside the preservation space 302, and a movable part 3083 connecting the limiting part 3081 and the blocking part 3082. In the connected state, the limiting part 3081 abuts against the preservation box 305, and the blocking part 3082 disengages from the preservation box 305, so that the interface 3051 connects the preservation space 302 and the docking space 3063.

[0110] In this embodiment, when in the connected state, since the reaction space 3031 and the docking space 3063 are connected, when the specific gas component in the reaction space 3031 decreases, the pressure in the docking space 3063 will decrease along with the reaction space 3031. Until the pressure in the preservation space 302 is greater than that in the docking space 3063, the sealing plug 308 is driven to move, that is, the limiting part 3081 is driven to abut against the second preservation box 305, and the sealing part 3082 is driven to disengage from the preservation box 305, thereby connecting the interface 3051 with the preservation space 302 and the docking space 3063, and then allowing the airflow of the preservation space 302 and the reaction space 3031 to be connected.

[0111] Furthermore, when the second food storage container 305 is removed from the modified atmosphere device 303, because the pressure inside the second food storage container 305 is lower than that of the external environment, the sealing plug 308 is driven to move by atmospheric pressure. This causes the limiting part 3081 to disengage from the second food storage container 305, while the sealing part 3082 abuts against the second food storage container 305. The sealing part 3082 then seals the interface 3051, preventing communication between the inside of the second food storage container 305 and the external environment. At this time, the second food storage container 305 can maintain its internal specific gas composition (e.g., a low-oxygen environment) without relying on the modified atmosphere device 303, and can be stored in any space within the refrigerator or taken out.

[0112] In an embodiment not shown, a sealing plug may also be provided on the first food storage container 304. It is only necessary to place the limiting part outside the food storage space and the sealing part inside the food storage space.

[0113] Specifically, the valve assembly 3061 further includes a valve seat 30615 that slides with the trigger block 30612, and the trigger structure 3062 includes a trigger cover 30621 that matches the valve seat 30615 and a trigger boss 30622 that connects to the trigger cover 30621. In this embodiment, the sliding engagement between the trigger block 30612 and the valve seat 30615 ensures that the movable rod 30611 moves axially along the ventilation ports 3032 and 3033, that is, ensures that the trigger block 30612 and the sealing ring 30614 move accurately. The trigger cover 30621 is recessed towards the preservation spaces 301 and 302, and the trigger boss 30622 protrudes towards the inside of the trigger cover 30621. The mating interface 3051 is formed on the trigger cover 30621. The mating space 3063 is formed inside the trigger cover 30621.

[0114] Furthermore, in the connected state, the trigger cover 30621 covers the valve seat 30615, and the trigger boss 30622 abuts against the trigger block 30612. In this embodiment, the valve assembly 3061 also includes a sealing ring 30616 sleeved on the valve seat 30615. In the connected state, the trigger cover 30621 abuts against the sealing ring 30616 to ensure the sealing of the docking space 3063. The food storage containers 304 and 305 utilize the matching trigger cover 30621 and valve seat 30615 to achieve positioning and installation with the modified atmosphere device 303. After installation, the edge of the trigger cover 30621 abuts against the sealing ring 30616, thereby forming a closed docking space 3063. During the installation of food storage containers 304 and 305, the trigger boss 30622 drives the trigger block 30612 to move, that is, to move along the sliding fit direction between the trigger block 30612 and the valve seat 30615, thereby causing the sealing ring 30614 to separate from the air vents 3032 and 3033, so as to connect the reaction space 3031 and the docking space 3063 through the air vents 3032 and 3033.

[0115] Second Embodiment

[0116] Referring to Figures 7 and 8, the preferred second embodiment of this application provides a refrigerator that, like the first embodiment, has preservation spaces 301 and 302 and a controlled atmosphere device 303 all located on the door 20. The difference is that the preservation spaces 301 and 302 are formed within the door compartment 201, fully utilizing the internal space of the door compartment 201 and increasing the volume of the preservation spaces 301 and 302. In this embodiment, the same reference numerals represent the same components with similar functions, and will not be described further.

[0117] Specifically, the preservation module 30 includes a first preservation space 301 and a second preservation space 302. The first preservation space 301 is located inside the door chamber 201 and on one side of the modified atmosphere device 303, while the second preservation space 302 is located inside the door chamber 201 and on the opposite side of the modified atmosphere device 303.

[0118] In this embodiment, the first preservation space 301 and the second preservation space 302 are spaced apart, meaning that after the door panel 203 is closed, no gas flow can occur between the first preservation space 301 and the second preservation space 302. The controlled atmosphere device 303 divides the door chamber 201 into the first preservation space 301 and the second preservation space 302, which are positioned opposite each other. This fully utilizes the internal space of the door 20 for the arrangement of the preservation module 30, improving the space utilization rate of the door chamber 201 and increasing the volume of the preservation spaces 301 and 302. The proportion of a specific gas in the first preservation space 301 differs from the proportion of a specific gas in the second preservation space 302.

[0119] For example, the proportion of a specific gas (e.g., oxygen) in the first preservation space 301 is greater than the proportion of a specific gas (e.g., oxygen) in the second preservation space 302.

[0120] Preferably, a single door panel 203 is used to open two preservation spaces 301 and 302. Of course, the door body 20 can also be equipped with two door panels corresponding to the number of preservation spaces 301 and 302, with each door panel opening one of the two preservation spaces.

[0121] Specifically, the controlled atmosphere device 303 is installed on the door frame. After the door panel 203 is closed, the door seal 204 on the door panel 203 can separate the two preservation compartments 301 and 302, preventing cross-contamination. Shelves 205 with grille holes 206 are also installed in the two preservation compartments 301 and 302 to facilitate the placement of items while ensuring the circulation of gas within each preservation compartment 301 and 302. The intercom 201 can obtain cooling energy by exchanging heat with the storage compartment 101 through the compartment back panel, thereby preventing gas flow between the intercom 201 and the storage compartment 101.

[0122] Furthermore, the modified atmosphere device 303 has a first ventilation port 3032 and at least one second ventilation port 3033. The first ventilation port 3032 is exposed within the first preservation space 301, and the second ventilation port 3033 is exposed within the second preservation space 302. In this embodiment, both the first ventilation port 3032 and the second ventilation port 3033 are exposed and connected to the corresponding preservation spaces 301 and 302, eliminating the need for gas pipelines, simplifying the structure, improving the space utilization of the door 20, and increasing the volume of the preservation spaces 301 and 302.

[0123] Preferably, the modified atmosphere device 303 has one first ventilation port 3032 and two second ventilation ports 3033. The mixed gas in the second preservation space 302 flows into the modified atmosphere device 303 through one of the second ventilation ports 3033 and undergoes an electrochemical reaction, reducing the specific gas component. The gas then flows back into the second preservation space 302 through the other second ventilation port 3033, ultimately reducing the specific gas component in the second preservation space 302. Alternatively, the mixed gas in the second preservation space 302 can simultaneously enter the modified atmosphere device 303 through both second ventilation ports 3033, thereby consuming the specific gas in the second preservation space 302.

[0124] Third Embodiment

[0125] Referring to Figure 9, the preferred third embodiment of this application provides a refrigerator that differs from the first embodiment in that the controlled atmosphere device 303 is disposed on the door 20, while the preservation compartments 301 and 302 are disposed on the cabinet 10. In this embodiment, the same reference numerals represent the same components with similar functions, and will not be described further.

[0126] Specifically, the refrigerator body 10 has a storage compartment 101. The location of the storage compartment 101 in this embodiment can be understood with reference to Figure 1 of the first embodiment. The door 20 covers at least a portion of the storage compartment 101. In this embodiment, when the door 20 completely covers the storage compartment 101, the refrigerator can be a single-door refrigerator. When the door 20 partially covers the storage compartment 101, the refrigerator can be a double-door refrigerator.

[0127] Furthermore, the preservation module 30 includes preservation boxes 304 and 305 forming preservation spaces 301 and 302. One of the modified atmosphere device 303 and the preservation boxes 304 and 305 is disposed in the storage chamber 101, and the other of the modified atmosphere device 303 and the preservation boxes 304 and 305 is disposed on the side of the door 20 facing the storage chamber 101.

[0128] In this embodiment, food storage containers 304 and 305 are disposed inside the storage compartment 101, and the modified atmosphere device 303 is disposed on the side of the door 20 facing the storage compartment 101. Preferably, the modified atmosphere device 303 is disposed in the upper half of the door 20, as this part of the door 20 is used less frequently by users who are not particularly tall. After the door 20 is opened, a layer of condensation adheres to the bottle holder, making it difficult to see the modified atmosphere device 303 located there from a lower angle. The modified atmosphere device 303 can also be placed in other less frequently used locations or other spaces inconvenient for users, without affecting the user's experience of using the refrigerator, and also facilitating the internal space layout of the refrigerator.

[0129] Fourth embodiment

[0130] Referring to Figure 10, the preferred fourth embodiment of this application provides a refrigerator that differs from the third embodiment in that the preservation compartments 301 and 302 are located on the door 20, while the controlled atmosphere device 303 is located on the cabinet 10. In this embodiment, the same reference numerals represent the same components with similar functions, and will not be described further.

[0131] Specifically, the modified atmosphere device 303 is disposed inside the storage chamber 101. The location of the storage chamber 101 in this embodiment can be understood with reference to Figure 1 of the first embodiment. The food storage containers 304 and 305 are disposed on the side of the door 20 facing the storage chamber 101. Preferably, the food storage containers 304 and 305 are disposed in the lower half of the door 20, so that the user can easily take them out after opening the door 20.

[0132] Fifth Embodiment

[0133] Referring to Figures 11 and 12, the preferred fifth embodiment of this application provides a refrigerator that, like the fourth embodiment, has its food preservation compartments 301 and 302 located on the door 20, while the controlled atmosphere device 303 is located on the cabinet 10. Unlike the fourth embodiment, the user can directly access the food preservation boxes 304 and 305 from the outside of the door. In this embodiment, the same reference numerals represent the same components with similar functions, and will not be described further.

[0134] Specifically, the housing 10 has a storage chamber 101, and a door 20 covers at least a portion of the storage chamber 101. The location of the storage chamber 101 in this embodiment can be understood with reference to Figure 1 of the first embodiment, and includes a door shell 202 forming a storage cavity 207 and a door panel 203 connecting the door shell 202 and covering the side of the storage cavity 207 opposite to the storage chamber 101. In this embodiment, the storage cavity 201 is formed in the lower middle part of the door shell 202, which facilitates the user to retrieve and place items in the storage cavity 207.

[0135] Furthermore, the preservation module 30 includes preservation boxes 304 and 305 forming preservation spaces 301 and 302, a modified atmosphere device 303 disposed within the storage chamber 101, and preservation boxes 304 and 305 disposed within the storage cavity 207. In this embodiment, by disposing of preservation boxes 304 and 305 within the storage cavity 207, the user can directly access the preservation boxes within the storage cavity 207 from the outside of the door by opening the door panel 203, without needing to open the door 20.

[0136] Specifically, the storage cavity 207 and the storage chamber 101 can be connected by airflow through the heat exchange port 208. Alternatively, heat can be exchanged between the back plate of the storage cavity 207 and the storage chamber 101 to obtain cooling capacity.

[0137] Referring to Figures 13 to 15, specifically, the preservation module 30 also includes a gas pipe 309 that connects the modified atmosphere device 303 and the preservation containers 304 and 305. As in this embodiment, the third embodiment, or the fourth embodiment, when one of the modified atmosphere device 303 and the preservation containers 304 and 305 is mounted on the housing 10, and the other is mounted on the door 20, airflow between the modified atmosphere device 303 and the preservation containers 304 and 305 can be achieved using the gas pipe 309.

[0138] Furthermore, the refrigerator also includes a hinge box 40 connecting the cabinet 10 and a hinge link 50 connecting the door 20 and at least partially passing through the hinge box 40, with a portion of the gas pipe 309 passing through the hinge link 50. The hinge link 50 prevents the gas pipe 309 from being exposed. The hinge link 50 moves relative to the cabinet 10 and moves within the hinge box 40 as the door 20 opens or closes. Compared to a design where the gas pipe 309 passes directly through the hinge box 40, this reduces wear on the gas pipe 309.

[0139] Specifically, the hinge link 50 is inserted into the door body via a pivot, thus achieving both fixation and relative rotation. The gas pipe 309 can be integrally formed, meaning that the gas pipe 309 extends from the housing 10, passes through the hinge link 50, and extends directly into the door body 20. Alternatively, the gas pipe 309 can be installed separately, meaning that one part of the gas pipe 309 extends from the housing 10, passes through the hinge link 50, and connects with another part of the gas pipe 309 inside the door body 20. This other part of the gas pipe 309 is pre-embedded within the door body 20.

[0140] Specifically, as shown in Figure 15, a bending space 401 is provided inside the hinge box 40. After the door 20 is closed, this space prevents damage to the gas pipe 309 caused by irregular displacement such as entanglement within the hinge box 40. Furthermore, by providing a limiting post 402 inside the hinge box 40, the displacement of the gas pipe 309 can be limited to a certain range, thereby allowing it to bend better within the hinge box 40, which is beneficial for opening and closing the door 20.

[0141] Sixth Embodiment

[0142] Referring to Figures 16 to 23, a sixth embodiment of this application provides a refrigerator. Referring to Figure 1, it includes a cabinet 10 and a door (not shown) pivotally connected to the cabinet 10. The cabinet 10 may include an outer shell 11 and a plurality of inner liners 12 disposed within the outer shell 11. The outer shell 11 is located on the outermost side of the entire refrigerator to protect the entire refrigerator. The plurality of inner liners 12 are enclosed by the outer shell 11, and a foam layer (not shown) is disposed in the space between the inner liners and the outer shell 11 to reduce heat dissipation from the inner liners 12. Each inner liner 12 may define a forward-opening storage compartment, and the storage compartment may be configured as a refrigerator compartment, a freezer compartment, a variable temperature compartment, etc. The specific number and function of the storage compartments can be configured according to pre-defined needs. The door is movably disposed in front of the inner liners 12 to open and close the storage compartments of the inner liners 12.

[0143] The storage room includes a first preservation room 121 and a second preservation room 122, so that different ingredients can be stored separately to achieve better storage results.

[0144] The first fresh-keeping compartment 121 can be, for example, an oxygen-enriched compartment, that is, a space with a relatively high oxygen concentration, where users can store oxygen-loving ingredients. The second fresh-keeping compartment 122 can be, for example, an oxygen-deficient compartment, that is, a space with a relatively low oxygen concentration, where users can store ingredients that are prone to oxidation.

[0145] The refrigerator also includes a controlled atmosphere device 303 located on the top of the cabinet 10. The controlled atmosphere device 303 has the function of producing oxygen and producing hydrogen or consuming oxygen. The oxygen produced by the controlled atmosphere device 303 is introduced into the first fresh-keeping compartment 121. If the controlled atmosphere device 303 produces hydrogen, the hydrogen is introduced into the second fresh-keeping compartment 122. If the controlled atmosphere device 303 consumes oxygen, the oxygen-consuming component of the controlled atmosphere device 303 is located in the second fresh-keeping compartment 122. This allows for the adjustment of the oxygen concentration in the first fresh-keeping compartment 121 and the second fresh-keeping compartment 122, respectively.

[0146] The controlled atmosphere device 303 is located on the top of the cabinet 10 and does not occupy the storage space in the inner liner 12, ensuring the storage space in the refrigerator's storage compartment. At the same time, it does not occupy the insulation space of the foam layer and will not affect the refrigerator's preservation effect. Furthermore, the refrigerator's insulation effect is better and can also ensure better cooling and preservation functions.

[0147] Referring to Figures 18 to 22, the modified atmosphere device 303 includes a mounting box 31 fixed to the top of the housing 11, an electrolysis box 32 disposed in the mounting box 31, an electrode located in the electrolysis box 32, an electrolyte containing chamber, and a product gas gathering chamber (not shown in the figures).

[0148] In a more specific embodiment of the controlled atmosphere device 303, the electrodes include a cathode and an anode (not shown in the figure) spaced apart. In the illustrated embodiment, the electrolytic cell 32 has an opening for the cathode to expose its outer surface, and the anode is disposed within the electrolyte containment cavity. When energized, the cathode allows oxygen from outside the electrochemical reaction chamber to pass through, where oxygen in the air undergoes a reduction reaction at the cathode location, with the reaction formula being O2 + 2H2O + 4e⁻. - →4OH - This reduces the oxygen content on the outside of the casing; the OH generated at the cathode - An oxidation reaction can occur at the anode to produce oxygen, with the reaction formula being 4OH⁻. - →O2 + 2H2O + 4e - The oxygen generated by the anode of the controlled atmosphere device 303 can be discharged to a specific area through the exhaust port (not shown in the figure) set on the electrolysis box.

[0149] In the specific implementation process, both the cathode and the anode can be configured as plates. The anode plate disposed in the electrolysis box 32 can be further provided with multiple through holes to increase the surface area of ​​the anode and allow electrolyte or air bubbles in the electrolyte containment cavity to pass through.

[0150] Referring to Figure 19, the refrigerator also includes a pipeline disposed between the controlled atmosphere device 303 and the fresh food compartments 121 and 122, for introducing oxygen-controlled gas prepared by the controlled atmosphere device 303 into the fresh food compartments 121 and 122, or for introducing gas from the fresh food compartments 121 and 122 into the controlled atmosphere device 303. The pipeline includes an oxygen supply pipe 41 for supplying oxygen to the first fresh food compartment 121, an outlet pipe 42 for supplying gas from the second fresh food compartment 122 to the controlled atmosphere device 303, and an inlet pipe 43 for balancing the internal air pressure of the second fresh food compartment 122.

[0151] One end of the oxygen supply pipe 41 is connected to the product gas collection chamber, and the other end is connected to the first preservation chamber 121. When the modified atmosphere device 303 is running, the anode reacts with the electrolyte in the electrolyte container to generate oxygen. The oxygen enters the product gas collection chamber. As the oxygen in the product gas collection chamber gradually increases, the oxygen will enter the first preservation chamber 121 through the oxygen supply pipe 41, increasing the oxygen content in the first preservation chamber 121.

[0152] Referring to Figures 19 and 20, one end of the exhaust pipe 42 and the intake pipe 43 are connected to the inner cavity of the mounting box 31, and the other end is connected to the second preservation chamber 122. The end of the exhaust pipe 42 connected to the mounting box 31 is located on the cathode side. The exhaust pipe 42 transports gas from the second preservation chamber 122 to the cathode side, where the cathode reacts with oxygen in the gas, resulting in a lower oxygen content in the chamber between the mounting box 31 and the electrolysis box 32. The intake pipe 43 transports oxygen-deficient gas into the second preservation chamber 122, thus reducing the oxygen content within the second preservation chamber 122.

[0153] Referring to Figures 20-22, in order to realize the airflow between the mounting box 31 and the second preservation chamber 122, a fan 33 is provided inside the mounting box 31. The fan 33 is located at the end where the air outlet pipe 42 is connected to the mounting box 31. An air inlet is provided at the position where the mounting box 31 connects to the air outlet pipe 42. The fan 33 is specifically installed at the position of the air inlet. Under the driving action of the fan 33, the airflow can be efficiently circulated.

[0154] The end of the outlet pipe 42 that connects to the inlet is configured as an expansion section 421. The diameter of the expansion section 421 gradually increases from the end furthest from the inlet towards the end closest to the inlet. Essentially, the expansion section 421 is designed as an inverted trumpet shape. Similarly, the diameter of the inlet corresponds to the diameter of the expansion section 421. This configuration allows the diameter of the expansion section 421 to match the size of the fan blades of the blower 33, fully utilizing the driving force of the fan blades to ensure efficient airflow transmission.

[0155] One end of the exhaust pipe 42 connected to the mounting box 31 and the other end of the intake pipe 43 connected to the mounting box 31 are respectively located on opposite sides of the electrolysis box 32. That is, the ends of the exhaust pipe 42 and the intake pipe 43 near the mounting box 31 are separated by the electrolysis box 32. After the cathode consumes the oxygen in the mounting box 31, the gas chamber inside the mounting box is in a state of oxygen deficiency. Therefore, the intake pipe 43 can introduce oxygen-deficient gas into the second preservation chamber 122.

[0156] Referring to Figure 19, in one embodiment, the refrigerator further includes a replenishment box 50 disposed within the cabinet 10, an inlet pipe 51 connecting the replenishment box 50 and the electrolyte reservoir, a drive pump 34 connected within the mounting box 31, the inlet pipe 51 connected to the drive pump 34, and a flow pipe 35 connecting the drive pump 34 and the electrolyte reservoir. The drive pump 34 is a water pump. When it is necessary to replenish the electrolyte in the electrolyte reservoir, the drive pump 34 is activated, driving the liquid in the replenishment box 50 into the inlet pipe 51 and then into the flow pipe 35 to replenish the electrolyte reservoir, ensuring the normal operation of oxygen production.

[0157] Referring to Figure 23, to avoid occupying the storage space inside the cabinet 10, a clearance space is provided on the side of the storage compartment near the door. The inner liner 12 has a recessed mounting groove on the downward-facing side of the foam layer located in this clearance space. The liquid replenishment box 50 is placed within the mounting groove, and the upper edge of the liquid replenishment box 50 is flush with the inner surface of the inner liner 12. This clearance space provides storage space for the shelves inside the door, thus the installation position of the liquid replenishment box 50 makes reasonable use of the refrigerator's internal structure.

[0158] It is easy to understand that the liquid replenishment box 50 is a flat, long rectangle. That is, the thickness of the liquid replenishment box 50 is small, the width is adapted to the clearance space, and the length is large. This not only increases the liquid storage space of the liquid replenishment box 50, but also does not take up much insulation space and does not affect the refrigeration effect of the refrigerator.

[0159] The replenishment box 50 is equipped with a filling port at the top. When the liquid (usually water) in the replenishment box 50 is insufficient, the user can add liquid to the replenishment box 50 through the filling port.

[0160] Furthermore, the liquid inlet pipe 51 is connected to the lower end of the liquid replenishment box 50, and the liquid inlet pipe 51 can pass through the foam layer. In addition, the oxygen supply pipe 41, the air outlet pipe 42, and the air inlet pipe 43 are all connected to the lower end of the mounting box 31, and after passing through the foam layer, they are connected to the rear wall of the preservation compartments 121 and 122.

[0161] In an optional embodiment, the replenishment box 50 can also be located on one side or above the mounting box 31. In this case, there is no need to install a water pump, and liquid can be replenished into the replenishment box 50 in other ways.

[0162] In an optional embodiment, a filter structure can be provided inside the housing 10. The oxygen supply pipe 41 is connected to the filter structure. The oxygen-regulated gas is first introduced into the filter structure and then transported to the first fresh-keeping compartment 121 after filtration, so as to avoid electrolyte contamination of the food in the first fresh-keeping compartment 121.

[0163] Furthermore, in the specific design process, the mounting box 31 includes a box body 36 and a box cover 37, with the electrolytic box 32 installed in the inner cavity of the box body 36. The mounting box 31 also has an integrally connected first part and a second part, with the width of the first part being greater than the width of the second part. Therefore, the mounting box 31, located at the position of the first part, has sufficient space to accommodate the fan 33 and the drive pump 34 structure.

[0164] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0165] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.

Claims

1. A refrigerator, characterized in that, include: Box; The door body is connected to the housing body; A preservation module, comprising at least one preservation space and a modified atmosphere device with airflow connected to the preservation space, the modified atmosphere device being configured to change the proportion of a specific gas in the preservation space through an electrochemical reaction. The preservation space and / or modified atmosphere device are located on the door, or the modified atmosphere device is located on the top of the box.

2. The refrigerator as described in claim 1, characterized in that, The door body includes a door shell forming a door chamber and a door panel connecting the door shell and covering the door chamber, and the controlled atmosphere device is disposed inside the door chamber.

3. The refrigerator as described in claim 2, characterized in that, The preservation module includes preservation boxes that correspond one-to-one with the preservation spaces. Each preservation space is formed inside the corresponding preservation box, and the preservation boxes are installed in the doorway room.

4. The refrigerator as described in claim 2, characterized in that, The enclosure has a storage chamber, and the door shell has an air inlet duct and a return air duct that connect to the door chamber. The air inlet duct and the return air duct are respectively connected to the storage chamber.

5. The refrigerator as described in claim 3, characterized in that, The preservation module includes a first preservation box and at least one second preservation box. The proportion of a specific gas in the preservation space of the first preservation box is greater than the proportion of a specific gas in the preservation space of the second preservation box. The first preservation box and the second preservation box are located on the same side of the modified atmosphere device.

6. The refrigerator as described in claim 3, characterized in that, The modified atmosphere device has a reaction space, and the preservation module also includes a docking structure. After the preservation box is docked with the modified atmosphere device, the airflow of the docking structure connects the preservation space and the reaction space.

7. The refrigerator as described in claim 6, characterized in that, The docking structure includes a valve assembly disposed on the modified atmosphere device and a triggering structure disposed on the food storage container. The valve assembly has a connected state that abuts against the triggering structure and a closed state that is not abutting against the triggering structure. In the connected state, a docking space is formed between the triggering structure and the valve assembly, and the airflow of the reaction space is connected to the docking space.

8. The refrigerator as described in claim 7, characterized in that, The modified atmosphere device has an air exchange port that exposes the reaction space. The valve assembly includes a movable rod that matches the air exchange port, a trigger block that connects to the movable rod, and an elastic element and a sealing ring sleeved on the movable rod. In the closed state, the elastic element abuts against the trigger block and the modified atmosphere device so that the sealing ring blocks the air exchange port.

9. The refrigerator as described in claim 7, characterized in that, The food storage container has an interface that exposes the food storage space. The food storage module also includes a sealing plug that cooperates with the interface. The sealing plug has a limiting part located inside the food storage space, a blocking part located outside the food storage space, and a movable part connecting the limiting part and the blocking part. In the connected state, the limiting part abuts against the food storage container, and the blocking part disengages from the food storage container, so that the interface connects the food storage space and the docking space.

10. The refrigerator as described in claim 8, characterized in that, The valve assembly further includes a valve seat that slides with the trigger block. The triggering structure includes a trigger cover that matches the valve seat and a trigger boss that connects to the trigger cover. In the connected state, the trigger cover covers the valve seat, and the trigger boss abuts against the trigger block.

11. The refrigerator as described in claim 2, characterized in that, The preservation module includes a first preservation space and a second preservation space space that are spaced apart from each other. The first preservation space space is located in the doorway and on one side of the modified atmosphere device, and the second preservation space space space is located in the doorway and on the opposite side of the modified atmosphere device.

12. The refrigerator as described in claim 11, characterized in that, The proportion of a specific gas in the first preservation space is greater than the proportion of a specific gas in the second preservation space. The modified atmosphere device has a first ventilation port and at least one second ventilation port. The first ventilation port is exposed in the first preservation space, and the second ventilation port is exposed in the second preservation space.

13. The refrigerator as described in claim 1, characterized in that, The enclosure has a storage compartment, and the door covers at least a portion of the storage compartment; The preservation module includes a food preservation box; One of the modified atmosphere device and the food preservation box is located in the storage room, and the other of the modified atmosphere device and the food preservation box is located on the side of the door facing the storage room; or, the door includes a door shell forming a storage cavity and a door panel connecting the door shell and covering the side of the storage cavity away from the storage room, the modified atmosphere device is located in the storage room, and the food preservation box is located in the storage cavity.

14. The refrigerator as described in claim 13, characterized in that, The preservation module also includes a gas pipeline that connects the airflow of the modified atmosphere device and the preservation box. The refrigerator also includes a hinge box that connects to the cabinet and a hinge rod that connects to the door and is at least partially inserted into the hinge box. A portion of the gas pipeline is inserted into the hinge rod.

15. The refrigerator as described in claim 1, characterized in that, The specific gas is oxygen; The controlled atmosphere device includes a cathode and an anode arranged at intervals. The cathode is configured to consume oxygen through an electrochemical reaction, and the anode is configured to provide reactants to the cathode and generate oxygen through an electrochemical reaction.

16. The refrigerator as claimed in claim 1, characterized in that, The box body includes an outer shell, an inner liner located within the outer shell, a foam layer located between the outer shell and the inner liner, a plurality of storage chambers located within the inner liner, and a plurality of preservation chambers disposed within any of the storage chambers. The modified atmosphere device is disposed on the top of the box body. The modified atmosphere device includes an electrolysis box, electrodes located within the electrolysis box, an electrolyte containing chamber, and a product gas gathering chamber. The product gas gathering chamber is connected to at least one of the preservation chambers.

17. The refrigerator as described in claim 16, characterized in that: The fresh-keeping compartment includes a first fresh-keeping compartment, and the refrigerator also includes an oxygen supply pipe connecting the product gas gathering chamber and the first fresh-keeping compartment.

18. The refrigerator as described in claim 16, characterized in that: The controlled atmosphere device includes a mounting box fixed to the top of the housing, and the electrolysis box (32) is fixed inside the mounting box; The fresh-keeping compartment also includes a second fresh-keeping compartment, and the refrigerator also includes an air outlet pipe connecting the inner cavity of the mounting box and the second fresh-keeping compartment, and an air inlet pipe connecting the inner cavity of the mounting box and the second fresh-keeping compartment.

19. The refrigerator as described in claim 18, characterized in that: An air inlet is provided at the position where the mounting box connects to the air outlet pipe, and a fan is provided at the position of the air inlet on the mounting box.

20. The refrigerator as described in claim 16, characterized in that: The refrigerator also includes a liquid replenishment box disposed inside the cabinet and a liquid inlet pipe connecting the liquid replenishment box and the electrolyte containing cavity; The storage chamber has a clearance space on the side near the door. The inner liner has a recessed mounting groove in the clearance space facing the foam layer. The replenishment box is located in the mounting groove, and the upper edge of the replenishment box is flush with the inner surface of the inner liner. The mounting box is equipped with a drive pump connected to the liquid inlet pipe to drive liquid from the replenishment box to the electrolyte container.

Images