Controlled atmosphere device and refrigeration apparatus having same

Abstract

Disclosed in the present application are a controlled atmosphere device and a refrigeration apparatus having same. The controlled atmosphere device comprises: a controlled atmosphere module configured to prepare an oxygen-adjusted gas and having a gas collection chamber; a liquid storage box having a filter area; and an oxygen adjustment circuit communicating the gas collection chamber with the liquid storage box, wherein an end tube of the oxygen adjustment circuit is inserted below the liquid level of the filter area, and the oxygen adjustment circuit has a backflow buffer chamber.

Description

Controlled atmosphere device and refrigeration equipment having it

[0001] This application is based on Chinese patent applications with application numbers CN202411595840.7, CN202411595997.X, CN202411596007.4, CN202411595532.4, CN202411590026.6, CN202411596083.5, and CN202422722991.6, all filed on November 8, 2024, and claims priority to all of the aforementioned Chinese patent applications, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to a preservation technology, and more particularly to a controlled atmosphere device and a refrigeration device having the same. Background Technology

[0003] As living standards improve, consumers have higher demands for refrigeration equipment, hoping to extend the storage time of food. However, different foods have different oxygen requirements for the storage environment. For fruits and vegetables, oxidation reactions with oxygen destroy nutrients, pigments, flavor compounds, and other components, making them difficult to store in an oxygen-rich environment. Fresh meat, on the other hand, requires sufficient oxygen to extend its storage time.

[0004] Existing refrigeration equipment is unable to meet the increasingly demanding requirements for food preservation. Therefore, it is necessary to provide an improved technical solution to address the aforementioned problems.

[0005] The inclusion of any related technologies in this specification does not imply confirmation or recommendation that such related technologies constitute part of the general knowledge of any jurisdiction, or that it is reasonably expected that such related technologies will be understood, regarded as related and / or combined with other related technologies by a person skilled in the art. Summary of the Invention

[0006] The purpose of this application is to provide a modified atmosphere device, a liquid replenishment box, an automatic liquid replenishment system, an electrolysis module, a refrigeration device, and a control method for the refrigeration device.

[0007] To achieve one of the above-mentioned objectives, one embodiment of this application provides a controlled atmosphere device, comprising:

[0008] A modified atmosphere module for preparing oxygen-modified gas and having a gas collection chamber;

[0009] The liquid storage box has a filtration section;

[0010] An oxygen regulating circuit connects the gas collecting chamber and the liquid storage box. The end tube of the oxygen regulating circuit is inserted below the liquid surface of the liquid storage box. The oxygen regulating circuit has a backflow buffer chamber.

[0011] In one embodiment, the liquid storage box has a filtration zone, and the end tube of the oxygen regulating circuit is inserted below the liquid surface of the filtration zone.

[0012] In one embodiment, the effective depth of the end tube inserted below the liquid surface of the filtration zone is h, the liquid surface area of ​​the filtration zone is s, and the volume of the backflow buffer chamber is v > h × s.

[0013] In one embodiment, the end tube surrounds the backflow buffer cavity.

[0014] In one embodiment, the controlled atmosphere device further includes an exhaust pipe disposed in the liquid storage box, wherein the air inlet of the exhaust pipe is located below the liquid surface of the filtration zone.

[0015] In one embodiment, the exhaust pipe has an exhaust channel, and the end pipe includes a first pipe wall and a second pipe wall disposed opposite to each other. The first pipe wall separates the exhaust channel from the backflow buffer chamber, and the second pipe wall is located on the side of the first pipe wall away from the exhaust pipe. The depth to which the first pipe wall is inserted below the liquid surface of the filtration zone is less than the depth to which the second pipe wall is inserted below the liquid surface of the filtration zone, where h is the depth to which the first pipe wall is inserted below the liquid surface of the filtration zone.

[0016] In one embodiment, the end tube further includes a third tube wall and a fourth tube wall, the third tube wall and the fourth tube wall being respectively connected to the first tube wall and the second tube wall, and the first tube wall, the third tube wall and the fourth tube wall being inserted into the filtration zone to a depth of h below the liquid surface.

[0017] In one embodiment, the exhaust pipe further includes a limiting wall located on the side of the first pipe wall away from the second pipe wall, the limiting wall and the first pipe wall forming the exhaust channel, and the limiting wall being inserted into the filtration zone to a depth greater than h below the liquid surface.

[0018] In one embodiment, the exhaust pipe further includes a first connecting plate and a second connecting plate disposed opposite to each other. The first connecting plate and the second connecting plate are respectively connected to the limiting wall and the second pipe wall, and the first connecting plate and the second connecting plate are respectively located on opposite sides of the end pipe.

[0019] In one embodiment, the end tube is configured as a flared tube.

[0020] In one embodiment, the gas conditioning circuit includes a connecting pipe connecting the terminal pipe to the modified atmosphere module, and the flared pipe includes a first pipe section and a second pipe section, the second pipe section connecting the first pipe section and the connecting pipe, wherein the cross-sectional area of ​​the first pipe section is larger than the cross-sectional area of ​​the second pipe section.

[0021] In one embodiment, the liquid storage box further includes a liquid storage area and a liquid level limiting mechanism. The liquid storage area is connected to the modified atmosphere module and replenishes the modified atmosphere module with liquid. The liquid level limiting mechanism limits the liquid level height of the filtration area. When the liquid level in the filtration area exceeds a preset height, the solution in the filtration area that exceeds the preset height enters the liquid storage area.

[0022] In one embodiment, the liquid storage box includes a box body and a top cover. The liquid storage area and the filtration area are both located in the box body. The top cover closes the box body. The liquid level limiting mechanism is a partition disposed between the liquid storage area and the filtration area. A liquid replenishment channel is formed between the partition and the top cover. The liquid replenishment channel connects the liquid storage area and the filtration area.

[0023] In one embodiment, the modified atmosphere device further includes an exhaust pipe disposed in the liquid storage box, and the upper end of the partition is higher than the air inlet of the exhaust pipe.

[0024] In one embodiment, the exhaust pipe is located on the side of the end pipe away from the liquid storage area.

[0025] In one embodiment, the liquid storage box includes a water supply box and a filter box, and the end pipe of the oxygen regulating circuit is inserted below the liquid level of the filter box.

[0026] In one embodiment, the effective depth of the end tube inserted below the liquid surface of the filter box is h', the liquid surface area of ​​the filter box is s', and the volume of the backflow buffer chamber is v > h' × s'.

[0027] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a refrigeration device, which includes the controlled atmosphere device described above.

[0028] To achieve one of the aforementioned objectives, one embodiment of this application also provides a controlled atmosphere device, comprising:

[0029] The modified atmosphere module includes electrodes, an electrolyte containment chamber, and a gas collection chamber;

[0030] The liquid storage box includes a liquid storage area, a filtration area and a replenishment area that are interconnected. The replenishment area is connected to the electrolyte container cavity. The replenishment line H of the replenishment area is higher than the first bottom wall of the liquid storage box located in the filtration area. The replenishment line H is the minimum liquid level that the liquid needs to reach to flow from the filtration area to the replenishment area.

[0031] The end tube has one inlet end connected to the gas collection chamber, and one outlet end of the end tube extends into the filtration zone and is lower than the replenishment line H of the replenishment zone.

[0032] An exhaust pipe connects the filtration zone to the outside of the liquid storage box.

[0033] In one embodiment, a liquid control device is provided in the replenishment area. The liquid control device includes a liquid inlet partition that divides the replenishment area into a first chamber and a second chamber. The liquid inlet partition is provided with a liquid inlet hole that connects the first chamber and the second chamber. The first chamber is connected to the electrolyte containing chamber through the second chamber.

[0034] In one embodiment, a partition plate extending upward from the first bottom wall is provided between the filtration zone and the replenishment zone, and the lowest horizontal line where the upper edge of the partition plate is located is the replenishment line position H.

[0035] In one embodiment, the lowest horizontal line on the side of the inlet hole closest to the first chamber is the replenishment line position H.

[0036] In one embodiment, the first chamber is located above the second chamber, and the horizontal line on the side of the liquid inlet baffle closest to the first chamber is the liquid replenishment line position H.

[0037] In one embodiment, the liquid control device further includes a plug for opening and closing the liquid inlet, the plug being floatingly disposed in the liquid replenishment area to move between a blocked position that seals the liquid inlet and a non-blocked position that unblocks the liquid inlet.

[0038] In one embodiment, the liquid control device further includes a float lever disposed in the second chamber. The float lever includes a connecting part that rotates on the liquid storage box, a connecting rod part that is fixed to the connecting part, and a float part that is fixed to the connecting rod part away from the connecting part. The plug is connected to the connecting rod part.

[0039] In one embodiment, the liquid storage box is connected to a pressure balance pipe that connects the second chamber and the outside of the liquid storage box.

[0040] In one embodiment, the liquid storage area, the filtration area, and the replenishment area are arranged sequentially along the liquid flow path.

[0041] In one embodiment, a replenishment port is provided on the side of the liquid storage area away from the replenishment area, and the liquid storage box is located on the second bottom wall of the liquid storage area, which gradually slopes downward from the replenishment port toward the filtration area.

[0042] In one embodiment, the liquid storage box has a downwardly extending second enclosure on the top wall of the filtration zone. The lower edge of the second enclosure is located between the outlet end of the end pipe and the first bottom wall. The end pipe and the exhaust pipe are disposed within the space enclosed by the second enclosure.

[0043] In one embodiment, the liquid storage box has a first top wall located in the liquid storage area and a second top wall located at least in the filtration area. The first top wall is provided with a liquid replenishment port, and the second top wall is higher than the first top wall to form an air cavity at least in the filtration area.

[0044] In one embodiment, an air inlet is provided on the second top wall and is connected to one end of the inlet of the end pipe. The end pipe is connected to the air collection chamber through the air inlet. The exhaust pipe is provided on the second top wall and is connected to the air chamber.

[0045] In one embodiment, the liquid storage box has a third bottom wall located in the replenishment area, and a liquid outlet is provided on the third bottom wall. The replenishment area is connected to the electrolyte receiving cavity through the liquid outlet.

[0046] In one embodiment, the liquid storage box has a first part, a second part and a third part respectively disposed at both ends of the first part, the width of the second part and the third part being greater than the width of the first part, the liquid storage area being located in the first part and the second part, and the filtration area and the replenishment area being located in the third part.

[0047] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a refrigeration device, including a housing and a compartment disposed within the housing, the compartment including a high-oxygen compartment, the refrigeration device further including the aforementioned controlled atmosphere device, the high-oxygen compartment being connected to the exhaust pipe.

[0048] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a rehydration box, comprising: a box body, with an internally connected liquid storage space and a balancing airway;

[0049] A liquid filling port is provided on the main body of the box, and the liquid filling port connects the liquid storage space with the outside of the main body of the box;

[0050] An air hole is provided on the box body, and the air hole connects the balance air channel to the outside of the box body;

[0051] The balancing airway has a first end communicating with the air hole and a second end communicating with the liquid storage space;

[0052] The box body has a liquid discharge state with the liquid inlet facing downwards and a liquid replenishment state with the liquid inlet facing upwards. In the liquid discharge state, the first highest liquid level line of the liquid storage space is not higher than the air hole. In the liquid replenishment state, the second highest liquid level line of the liquid storage space is not higher than the second end of the balance air channel.

[0053] In one embodiment, the box body is connected by a connecting rib that at least partially separates the liquid storage space and the balance air passage, and the liquid inlet and the air hole are located on opposite sides of the connecting rib.

[0054] In one embodiment, the box body has a first wall, a second wall opposite to the first wall, and a side wall surrounding the first wall and the second wall. The first wall, the second wall, and the side wall together form the inner cavity of the box body. The connecting rib extends from the second wall toward the first wall, and the connecting rib and the side wall together form a gas channel communicating with the air hole.

[0055] In one embodiment, the liquid inlet is disposed on the first wall, and the air hole is disposed on the second wall.

[0056] In one embodiment, the box body further has a groove recessed from the inner surface of the first wall toward the direction away from the second wall; one end of the connecting rib away from the second wall extends into the groove and forms a gap with the bottom wall of the groove, and the gas channel and the internal space of the groove together constitute the balanced air passage.

[0057] In one embodiment, the first wall has an opening, and the replenishment box further has a cover assembly disposed at the opening, with the filling port disposed on the cover assembly.

[0058] In one embodiment, the cover assembly includes a main body and a deformable part located in the middle region of the main body. The main body is detachably connected to the box body, and the deformable part is fixedly connected to the main body. The deformable part has a first state of opening the liquid inlet and a second state of closing the liquid inlet.

[0059] In one embodiment, the deformable part is made of an elastic material and has a partial slit. In the first state, the slit is open to connect the liquid inlet and the outside of the box body; in the second state, the slit is closed to block the liquid inlet and the outside of the box body.

[0060] In one embodiment, the cover assembly further has a fixing part that engages with the main body, and the deformable part is fixed to the main body by the fixing part.

[0061] In one embodiment, the fluid replenishment box further includes a limiting guide mechanism for guiding the installation of the fluid replenishment box.

[0062] To achieve one of the above-mentioned objectives, one embodiment of this application also provides an automatic liquid replenishment system, which includes a liquid storage box and a replenishment box as described above that can be detachably installed on the liquid storage box. The liquid storage box has a liquid filling port for docking with the liquid filling port. In the liquid dispensing state, the liquid filling port is connected to the liquid filling port.

[0063] In one embodiment, the liquid storage box includes a box body, the box body having a liquid storage cavity, a liquid control cavity, and a liquid control assembly. The liquid control assembly has an isolation plate and a liquid control tube. The isolation plate separates the liquid storage cavity and the liquid control cavity and has a replenishment hole connecting the liquid storage cavity and the liquid control cavity. A first end of the liquid control tube extends into the liquid control cavity, and a second end of the liquid control tube extends into the outside of the liquid control cavity. At least a portion of the lumen of the liquid control tube is higher than the third highest liquid level line of the liquid storage cavity.

[0064] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a modified atmosphere device, which includes an electrolysis module for preparing oxygen-modified gas, the electrolysis module having an electrolyte containing cavity; the modified atmosphere device further includes the above-mentioned automatic liquid replenishment system, the liquid storage box having a liquid outlet, and the automatic liquid replenishment module being connected to the electrolyte containing cavity through the liquid outlet.

[0065] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a refrigerator having the controlled atmosphere device as described above.

[0066] To achieve one of the above-mentioned objectives, one embodiment of this application provides an automatic liquid replenishment system, comprising: a housing, the housing having a liquid storage area, a liquid control chamber, and a liquid control component, the liquid control component having an isolation plate and a liquid control tube, the isolation plate separating the liquid storage area from the liquid control chamber and having an inlet hole communicating between the liquid storage area and the liquid control chamber, a first end of the liquid control tube extending into the liquid control chamber, a second end of the liquid control tube extending into the outside of the liquid control chamber, and at least a portion of the lumen of the liquid control tube being higher than the highest liquid level line of the liquid storage area.

[0067] In one embodiment, the liquid control chamber is located below the liquid storage area.

[0068] In one embodiment, the second end of the liquid control tube extends to the upper part of the highest liquid level line of the liquid storage area.

[0069] In one embodiment, the housing has a top cover located at the top, and the lower surface of the top cover is recessed upward to form an air cavity, and the second end of the hydraulic control tube extends into the air cavity.

[0070] In one embodiment, the diameter of the liquid inlet gradually decreases from the liquid storage area toward the liquid control chamber.

[0071] In one embodiment, the isolation plate is located at the bottom of the liquid storage area, the upper side of the isolation plate is the bottom wall of the liquid storage area, and the lower side of the isolation plate is the top wall of the liquid control chamber.

[0072] In one embodiment, the hydraulic control tube is fixed to the isolation plate.

[0073] In one embodiment, the isolation plate includes a body portion having the liquid inlet hole and a fixing portion connected to the body portion, and the liquid control assembly further has a sealing ring disposed between the fixing portion and the side wall of the liquid control chamber.

[0074] In one embodiment, the box body is provided with a liquid filling port that connects the liquid storage area and the outside of the box body.

[0075] In one embodiment, the cross-sectional area of ​​the liquid control chamber in the horizontal direction is smaller than the cross-sectional area of ​​the liquid storage area in the horizontal direction.

[0076] In one embodiment, the housing further includes a filtration zone for filtering gases, the filtration zone being connected to the liquid storage zone.

[0077] In one embodiment, the automatic liquid replenishment system has a liquid level limiting mechanism that limits the minimum water level in the filtration zone; the top of the box is provided with a top cover, and the top cover has a backflow buffer chamber, an air inlet channel and an exhaust channel at a position corresponding to the filtration zone. The air inlet of the exhaust channel is lower than the liquid level of the minimum water level in the filtration zone, and the air inlet channel is connected to the upper part of the backflow buffer chamber.

[0078] In one embodiment, the liquid level limiting mechanism is a partition disposed at the connection position between the liquid storage area and the filtration area. The partition extends upward from the bottom wall of the box body, and the liquid storage area and the filtration area are connected at the upper part of the partition. The top cover has a cavity wall that defines the backflow buffer chamber, and the lower edge of the cavity wall is lower than the plane where the lowest water level of the filtration area is located. The plane where the bottom wall of the filtration area is located is lower than the plane where the bottom wall of the liquid storage area is located.

[0079] To achieve one of the above-mentioned objectives, one embodiment of this application provides a modified atmosphere device, which includes an electrolysis module for preparing oxygen-modified gas. The electrolysis module includes an electrolyte container and an electrode. The modified atmosphere device also includes the above-mentioned automatic liquid replenishment system. The housing has a liquid outlet at the bottom of the liquid control chamber. The automatic liquid replenishment system is connected to the electrolyte container through the liquid outlet. The first end of the liquid control tube is not lower than the highest edge of the electrode.

[0080] To achieve one of the above-mentioned application objectives, one embodiment of this application provides a refrigerator, including a cabinet, and the refrigerator also has the above-described automatic liquid replenishment system or controlled atmosphere device.

[0081] To achieve one of the above-mentioned objectives, one embodiment of this application provides an electrolysis module, including an electrolysis box, an oxygen regulating pipe connected to the electrolysis box, the oxygen regulating pipe having an oxygen outlet communicating with the electrolysis box and an oxygen inlet communicating with the outside of the electrolysis box, the electrolysis module having at least one tilting direction, and at any tilting angle α in each tilting direction, the oxygen outlet and / or oxygen inlet being higher than the highest liquid level line inside the electrolysis box.

[0082] In one embodiment, α is 0° to 90°.

[0083] In one embodiment, in the non-poured direction, the oxygen outlet is located at the upper edge of the electrolysis box.

[0084] In one embodiment, the electrolysis module further includes a liquid storage box, and the oxygen inlet is connected to the liquid storage box.

[0085] In one embodiment, the liquid storage box has a filtration zone, the oxygen inlet is connected to the filtration zone, and the liquid storage box is also provided with a gas filter outlet located in the filtration zone, the gas filter outlet being connected to the outside of the filtration zone and the liquid storage box.

[0086] In one embodiment, in the non-poured direction, the gas filter outlet is located at the upper edge of the liquid storage box.

[0087] In one embodiment, a replenishment pipe is connected between the liquid storage box and the electrolysis box. The replenishment pipe has a replenishment outlet communicating with the inside of the liquid storage box and a liquid inlet communicating with the inside of the electrolysis box. At any tilting angle α in each tilting direction, the replenishment outlet or the liquid inlet is higher than the highest liquid level line in the electrolysis box.

[0088] In one embodiment, in the non-poured direction, the liquid inlet is not higher than the lumen of the replenishment pipe;

[0089] And / or, in the non-poured direction, the replenishment outlet is higher than the inlet.

[0090] In one embodiment, the electrolytic box has a gas collecting chamber and an electrolyte containing chamber located below and connected to the gas collecting chamber. The oxygen outlet is connected to the gas collecting chamber, and the electrolyte inlet is connected to the electrolyte containing chamber.

[0091] In one embodiment, an electrode is disposed inside the electrolysis box and located in the electrolyte containing cavity, wherein, in the non-tilting direction, the lowest liquid level line of the electrolyte containing cavity is not lower than the upper edge of the electrode.

[0092] In one embodiment, the liquid storage box has a liquid storage cavity and a liquid control cavity located below and connected to the liquid storage cavity, and the liquid replenishment outlet is connected to the liquid storage box located below the liquid control cavity.

[0093] In one embodiment, in the non-poured direction, the liquid control chamber is located on the horizontal side of the electrolyte container chamber, and the liquid replenishment line of the liquid control chamber is not higher than the highest liquid level line.

[0094] In one embodiment, the liquid storage box has a first part and a second part connected to each other, the width of the first part being greater than the width of the second part to form a groove on one side of the second part, and at least in the horizontal direction, the gas collecting cavity is embedded in the groove.

[0095] In one embodiment, the liquid storage box is provided with a liquid replenishment port on the top wall of the first part.

[0096] To achieve one of the above-mentioned objectives, one embodiment of this application provides a refrigeration device, including a housing, wherein an electrolysis module as described above is disposed inside the housing.

[0097] To achieve one of the above-mentioned objectives, one embodiment of this application provides a controlled atmosphere device, comprising:

[0098] Reaction chamber;

[0099] Liquid storage section, wherein the liquid storage section has a liquid storage chamber;

[0100] An electrode assembly, comprising a first electrode and a second electrode exposed within a reaction chamber;

[0101] The controlled atmosphere device further includes a connecting part that connects the reaction chamber and the liquid storage chamber, so that the liquid level in the reaction chamber and the liquid level in the liquid storage chamber are at the same level.

[0102] In one embodiment, the modified atmosphere device further includes a mounting portion for connecting an electrode assembly, wherein the first electrode forms at least a portion of the outer wall of the mounting portion and together with the mounting portion forms a reaction chamber.

[0103] In one embodiment, the mounting part and the liquid storage part are separately disposed.

[0104] In one embodiment, the mounting part and the liquid storage part are integrally formed.

[0105] In one embodiment, the mounting part and the liquid storage part are connected to each other, abut against each other, or are spaced apart.

[0106] In one embodiment, the controlled atmosphere device further includes a liquid level sensor exposed in the liquid storage chamber, the liquid level sensor being connected to the mounting portion and / or the liquid storage portion.

[0107] In one embodiment, both the first electrode and the second electrode extend in a vertical direction, and the first electrode and the second electrode are arranged in a horizontal direction.

[0108] In one embodiment, both the first electrode and the second electrode extend in a horizontal direction, and the first electrode and the second electrode are arranged in a vertical direction.

[0109] In one embodiment, the second electrode is located above the first electrode, and the second electrode is provided with a vent hole.

[0110] In one embodiment, the mounting part has an air outlet that exposes the reaction chamber and a liquid inlet that communicates with the reaction chamber, the liquid storage part has a liquid replenishment inlet that exposes the liquid storage chamber and a liquid drain that communicates with the liquid storage chamber, the liquid inlet is connected to the communicating part and is located at the bottom of the mounting part, and the liquid drain is connected to the communicating part and is located at the bottom of the liquid storage part.

[0111] In one embodiment, the controlled atmosphere device further includes a valve disposed in the connecting part, the valve selectively connecting or disconnecting the reaction chamber and the liquid storage chamber.

[0112] In one embodiment, the connecting portion is configured as a flexible hose and is sealed and connected to the mounting portion and the liquid storage portion respectively.

[0113] In one embodiment, the mounting portion has a mounting opening that communicates with the reaction chamber and matches the first electrode, the first electrode being sealed within the mounting opening.

[0114] In one embodiment, the first electrode is configured to consume oxygen through an electrochemical reaction, and the second electrode is configured to provide reactants to the first electrode and generate oxygen through an electrochemical reaction.

[0115] To achieve one of the above-mentioned objectives, one embodiment of this application provides a refrigeration device, which includes the controlled atmosphere device described above.

[0116] To achieve one of the above-mentioned objectives, one embodiment of this application provides a control method for a refrigeration device, the refrigeration device including an atmosphere control device, the atmosphere control device including a reaction chamber and an electrode assembly exposed within the reaction chamber, the control method including the following steps:

[0117] The operating current I0 of the electrode assembly is obtained at preset time intervals;

[0118] The liquid level H0 in the reaction chamber is determined based on the operating current I0 of the electrode assembly.

[0119] When the liquid level H0 in the reaction chamber is determined to be no higher than the first preset liquid level H1, a liquid replenishment signal is issued.

[0120] In one embodiment, when the voltage applied to the electrode assembly is a constant voltage, the liquid level H0 in the reaction chamber is determined to be no higher than the first preset liquid level H1 based on the fact that the operating current I0 of the electrode assembly is no higher than the preset operating current I1.

[0121] In one embodiment, when the voltage applied to the electrode group is a variable voltage, the operating voltage U0 of the electrode group corresponding to the operating current I0 of the electrode group is obtained. Based on the fact that the solution resistance value R0 in the reaction chamber is not less than the preset solution resistance value R1, it is determined that the liquid level H0 in the reaction chamber is not higher than the first preset liquid level H1, where R0 = U0 / I0.

[0122] In one embodiment, the principle that the solution resistance value R0 in the reaction chamber is not less than the preset solution resistance value R1 specifically means:

[0123] When the operating current I0 of the electrode group is not lower than the preset operating current I2, compare whether the operating voltage U0 of the electrode group is not lower than the preset operating voltage U1.

[0124] Alternatively, when the operating voltage U0 of the electrode group is not lower than the preset operating voltage U2, compare whether the operating current I0 of the electrode group is not higher than the preset operating current I3.

[0125] In one embodiment, the voltage applied to the electrode assembly is a variable voltage, specifically meaning:

[0126] The operating voltage of the electrode assembly gradually decreases as the operating time of the electrode assembly increases.

[0127] In one embodiment, a corresponding preset solution resistance value R1 is selected based on the time the refrigeration equipment cools the reaction chamber or the solution temperature inside the reaction chamber.

[0128] In one embodiment, the controlled atmosphere device further includes a liquid level sensor for detecting the liquid level in the reaction chamber. When the liquid level H0 in the reaction chamber is determined to be no higher than a first preset liquid level H1 based on the operating current I0 of the electrode assembly and / or the liquid level sensor, a liquid replenishment signal is issued.

[0129] In one embodiment, the controlled atmosphere device further includes a liquid storage chamber. When the liquid storage chamber is connected to the reaction chamber, the liquid level in the reaction chamber and the liquid level in the liquid storage chamber are at the same level. The liquid level sensor is exposed in the reaction chamber or the liquid storage chamber.

[0130] In one embodiment, the time t0 required for the liquid level H0 in the reaction chamber to rise from the second preset liquid level H2 to the first preset liquid level H1 is obtained. If the time t0 is less than the preset time t1, the gas control device is controlled to stop operating, wherein H2 > H1.

[0131] Alternatively, the liquid level drop rate v0 in the reaction chamber can be obtained, and if the liquid level drop rate v0 is greater than the preset liquid level drop rate v1, the controlled atmosphere device can be stopped.

[0132] In one embodiment, the refrigeration equipment further includes a liquid supply tank for replenishing the controlled atmosphere device and a liquid pump for conveying the solution in the liquid supply tank to the controlled atmosphere device. When it is determined that the liquid level H0 in the reaction chamber is not higher than the first preset liquid level H1, the liquid pump is started.

[0133] Once the controlled atmosphere device has reached the preset number of operating cycles, start the liquid pump.

[0134] Compared with related technologies, the beneficial effects of this application are as follows:

[0135] (1) In one embodiment of this application, a controlled atmosphere device and a refrigeration device having the same are provided. By setting the storage box, the controlled atmosphere module prepares the controlled atmosphere gas and delivers it to the storage box via the controlled atmosphere gas path. Since the end tube of the controlled atmosphere gas path is inserted below the liquid surface of the storage box, the controlled atmosphere gas will enter the solution in the storage box. This allows the controlled atmosphere gas to be washed with water to remove the electrolyte particles carried in the controlled atmosphere gas, thereby preventing the controlled atmosphere gas from carrying electrolyte particles into the chamber when it is delivered to the chamber, so as not to contaminate the food in the chamber. When the controlled atmosphere module undergoes an electrochemical reaction, its internal temperature will rise. When the controlled atmosphere module stops working, its internal gas pressure will decrease as the temperature decreases. The backflow buffer chamber in the controlled atmosphere gas path can prevent the solution in the water box from being backflowed into the controlled atmosphere module due to the decrease in gas pressure in the controlled atmosphere module.

[0136] (2) In one embodiment of the controlled atmosphere device and refrigeration equipment of this application, a filtration zone is provided in the liquid storage box. The gas in the gas collection chamber is first passed into the filtration zone for filtration, and the filtered gas is then passed into the oxygen-regulating space in the refrigerator through the exhaust pipe. Therefore, there is no need to design a separate filtration structure, which will not occupy the refrigerator volume, reduce the number of pipe connections, and thus reduce the risk of gas leakage. Moreover, only liquid needs to be replenished into the liquid storage box, and there is no need to repeat the replenishment work. Furthermore, since one end of the terminal pipe is lower than the replenishment line H of the replenishment zone, the outlet of the terminal pipe is always located below the liquid surface of the electrolyte. Even if the electrolyte capacity in the liquid storage box is insufficient, oxygen can still be filtered smoothly, avoiding unfiltered oxygen from contaminating the food in the refrigerator storage compartment.

[0137] (3) In the specific scenario of applying the liquid replenishment box, automatic liquid replenishment system, modified atmosphere device and refrigerator according to one embodiment of this application, the user can quickly realize the liquid replenishment operation by aligning the liquid filling port of the liquid replenishment box with the target liquid filling port, without the need for excessive intervention by the operator, and the operation is simple and low cost.

[0138] (4) The automatic liquid replenishment system, modified atmosphere device and refrigerator of one embodiment of this application, in the specific application of modified atmosphere device and refrigerator, can automatically replenish the electrolyte of the electrolysis module without the need for electric components or other complex structural components, which simplifies the process and reduces costs, bringing greater convenience and economy to the application of modified atmosphere preservation technology.

[0139] (5) In one embodiment of the present application, the oxygen outlet and oxygen inlet are configured such that at least one of them is higher than the highest liquid level in the electrolysis box in any pouring direction. During the process of transporting and pouring the refrigeration equipment, the electrolyte in the electrolysis box will not leak into the oxygen-regulating room used for preservation, thus preventing the food in the oxygen-regulating room from being contaminated.

[0140] (6) In the first embodiment of the present application, after storing electrolyte in the storage chamber, when the connecting part connects the reaction chamber and the storage chamber, pressure balance can be achieved between the reaction chamber and the storage chamber, so that the liquid level in the reaction chamber and the liquid level in the storage chamber are at the same level, thereby replenishing the electrolyte stored in the storage chamber to the reaction chamber, thus eliminating the need to frequently add electrolyte to the reaction chamber and reducing the frequency of directly adding electrolyte to the reaction chamber.

[0141] (7) The control method of the refrigeration equipment according to one embodiment of this application can determine whether the actual liquid level in the reaction chamber is not higher than the first preset liquid level by obtaining the operating current of the electrode group and utilizing the different operating currents corresponding to different liquid levels, thereby avoiding the liquid level in the reaction chamber being too low and affecting the efficiency of the electrochemical reaction.

[0142] 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

[0143] Figure 1 is a three-dimensional structural schematic diagram of a refrigeration device according to an embodiment of this application;

[0144] Figure 2 is a three-dimensional structural schematic diagram of a controlled atmosphere device according to an embodiment of this application;

[0145] Figure 3 is a three-dimensional structural schematic diagram of the modified atmosphere device of this application from another angle;

[0146] Figure 4 is a three-dimensional structural schematic diagram of the modified atmosphere device of this application from another angle;

[0147] Figure 5 is a schematic diagram of the explosion shown in Figure 4;

[0148] Figure 6 is an exploded view of the liquid storage box according to an embodiment of this application;

[0149] Figure 7 is a partial cross-sectional schematic diagram of an embodiment of this application;

[0150] Figure 8 is an enlarged schematic diagram of part A in Figure 7;

[0151] Figure 9 is a plan view of the cross-section of the structure shown in Figure 8;

[0152] Figure 10 is a side view of a controlled atmosphere device according to an embodiment of this application;

[0153] Figure 11 is a schematic cross-sectional view along line BB in Figure 10;

[0154] Figure 12 is an enlarged schematic diagram of part C in Figure 11;

[0155] Figure 13 is a perspective view of one embodiment of the automatic fluid replenishment system of this application;

[0156] Figure 14 is a schematic diagram of the portion removed along the DD direction in Figure 13;

[0157] Figure 15 is an enlarged schematic diagram of part a in Figure 14;

[0158] Figure 16 is a planar schematic diagram of the cross-section in Figure 14;

[0159] Figure 17 is a schematic diagram of fluid replenishment control combined with part b in Figure 16;

[0160] Figure 18 is a schematic diagram of an explosion of an automatic fluid replenishment system;

[0161] Figure 19 is a schematic diagram of another implementation of the fluid replenishment module of this application;

[0162] Figure 20 is a schematic diagram of another embodiment of the fluid replenishment module of this application;

[0163] Figure 21 is a perspective view of one embodiment of the controlled atmosphere device of this application;

[0164] Figure 22 is a schematic diagram showing the liquid replenishment box separated from other structures in the controlled atmosphere device of Figure 21;

[0165] Figure 23 is a schematic diagram of the structure shown in Figure 22 from another angle;

[0166] Figure 24 is a schematic diagram of the liquid replenishment box in the state where the box body and the box lid assembly are separated;

[0167] Figure 25 is a partial schematic diagram of the fluid replenishment box shown in Figure 24 after being cut by a plane passing through the balancing airway.

[0168] Figure 26 is a plan view of the structure shown in Figure 25 at the cross-section location;

[0169] Figure 27 is a schematic diagram of the state when the solution in the replenishment box shown in Figure 26 is replenished to the highest liquid level;

[0170] Figure 28 is a schematic diagram of one embodiment of the cover assembly;

[0171] Figure 29 is a partial schematic diagram of the cover assembly shown in Figure 28 after being cut by a plane passing through the liquid filling port;

[0172] Figure 30 is an explosion diagram of the structure shown in Figure 29;

[0173] Figure 31 is a schematic diagram of another embodiment of the fluid replenishment box of this application;

[0174] Figure 32 is a schematic diagram of the state when the solution in the replenishment box shown in Figure 31 is replenished to the highest liquid level;

[0175] Figure 33 is an explosion diagram of an automatic fluid replenishment system;

[0176] Figure 34 is a schematic diagram of the explosion of the liquid storage box;

[0177] Figure 35 is a partial schematic diagram of the liquid storage box after being cut by a plane passing through the center line of the hydraulic control tube.

[0178] Figure 36 is a planar schematic diagram of the enlarged cross-section in Figure 35;

[0179] Figure 37 is a schematic diagram of one possible combination of the liquid storage box and the electrolysis module;

[0180] Figure 38 is an isometric view of an electrolysis module in this embodiment;

[0181] Figure 39 is a right view of an electrolysis module in this embodiment;

[0182] Figure 40 is a cross-sectional view along the EE direction in Figure 39;

[0183] Figure 41 is a front view of an electrolysis module in the first tilting direction in this embodiment;

[0184] Figure 42 is a front view of an electrolysis module in the second tilting direction in this embodiment;

[0185] Figure 43 is a front view of an electrolysis module in the third tilting direction in this embodiment;

[0186] Figure 44 is a right view of an electrolysis module in the third tilting direction in this embodiment;

[0187] Figure 45 is a front view of an electrolysis module in the fourth tilting direction in this embodiment;

[0188] Figure 46 is a right view of an electrolysis module in the fourth tilting direction in this embodiment;

[0189] Figure 47 is a cross-sectional view along the FF direction in Figure 45, showing the direction where it is not tilted.

[0190] Figure 48 is an enlarged view of part G in Figure 47;

[0191] Figure 49 is a cross-sectional view along the MM direction in Figure 46, showing the direction where it is not tilted.

[0192] Figure 50 is an isometric view of the liquid storage box in the controlled atmosphere device of Embodiment 2 of this application;

[0193] Figure 51 is a top view of a liquid storage box in a controlled atmosphere device according to this application;

[0194] Figure 52 is a cross-sectional view along the NN direction in Figure 51;

[0195] Figure 53 is a partial structural diagram of Figure 52;

[0196] Figure 54 is a cross-sectional view of the filtration zone and the liquid control zone in an optional embodiment, with the liquid inlet baffle as the liquid replenishment line.

[0197] Figure 55 is a cross-sectional view of the filtration zone and the liquid control zone in an optional embodiment, with the liquid inlet hole as the liquid replenishment line.

[0198] Figure 56 is a cross-sectional view of the filtration area and the liquid control area in an optional embodiment, with the bottom wall of the liquid storage box as the liquid replenishment line.

[0199] Figure 57 is a cross-sectional view along the PP direction in Figure 51;

[0200] Figure 58 is an enlarged view of the structure of part Q in Figure 57;

[0201] Figure 59 is an exploded view of a liquid storage box in a controlled atmosphere device according to this application;

[0202] Figure 60 is a cross-sectional schematic diagram of the refrigeration equipment in this application;

[0203] Figure 61 is a perspective view of the controlled atmosphere device in a preferred embodiment of this application;

[0204] Figure 62 is a cross-sectional view at RR in Figure 61;

[0205] Figure 63 is a cross-sectional view at SS in Figure 61;

[0206] Figure 64 is a perspective view of a preferred embodiment of the mounting part in Figure 61;

[0207] Figure 65 is an exploded view of Figure 64;

[0208] Figure 66 is a cross-sectional view at TT in Figure 64;

[0209] Figure 67 is a cross-sectional view at TT of another preferred embodiment of the mounting part in Figure 61;

[0210] Figure 68 is a control flowchart of the refrigeration equipment in a preferred embodiment of this application;

[0211] Figure 69 shows the relationship between the operating voltage and operating current of the electrode assembly when there are different liquid levels in the reaction chamber. 100. Refrigeration equipment; 1. Box; 2. Controlled atmosphere device; 21. Controlled atmosphere module; 211. Shell; 212. Liquid inlet; 213. Cathode; 22. Liquid storage box; 220. Liquid storage chamber; 2201. Wall constituting the liquid storage chamber; 202. Liquid control chamber; 2021. Wall constituting the liquid control chamber; 203. Gas chamber; 221. Filtering area; 2211. Second enclosure; 222. Liquid storage area; 2221. Liquid outlet; 223. Box body; 2231. First bottom wall; 2232. Second bottom wall; 2233. Third bottom wall; 224. Top cover; 2240. Protrusion; 2241. First top wall; 2242. Second top wall; 225. Pressure balance port; 226. Pressure balance pipe; 227. 229. Liquid replenishment area; 23. Oxygen regulating circuit; 231. Terminal pipe; 2311. First pipe section; 23111. First pipe wall; 23112. Second pipe wall; 23113. Third pipe wall; 23114. Fourth pipe wall; 2312. Second pipe section; 232. Backflow buffer chamber; 233. Connecting pipe; 2331. Air inlet channel; 24. Exhaust pipe; 241. Exhaust channel; 242. Air inlet; 243. Limiting wall; 244. First connecting plate; 245. Second connecting plate; 25. Partition; 251. Liquid replenishment channel; 26. Liquid replenishment port; 27. Hydraulic control assembly; 271. Isolation plate; 2711. Main body; 2712. Second fixing part; 272. Hydraulic control pipe; 273 1. Sealing ring; 274. Liquid replenishment hole; 2710. Mounting groove; 30. Electrolysis module; 31. Clearance area; 941. Upper shell; 942. Lower shell; 9411. Clearance hole; 9412. Guide wall; 94121. First guide groove; 94122. Second guide groove; 41. Liquid inlet baffle; 411. Liquid inlet hole; 42. First enclosure plate; 43. Float swing rod; 431. Connecting part; 432. Connecting rod part; 433. Float part; 44. Plug; 45. Crossbar; 10. Liquid replenishment box; 11. First wall; 12. Second wall; 13. Balance air passage; 130. Connecting rib; 1300. Gap; 131. Groove; 132. Gas passage; 133. External pipe; 14. Side wall; 141 142. First protrusion; 15. Second protrusion; 16. Cover assembly; 151. Main body; 1510. Inner protrusion; 1511. Peripheral wall; 1512. Inner wall; 1513. Connecting wall; 1514. Flange; 152. Deformation part; 1520. Cutout; 1521. Locking area; 153. First fixing part; 1530. Slot; 1531. Outer protrusion; 150. Liquid filling port; 100. Liquid storage space; 811. Electrolysis box; 812. Electrolyte receiving cavity; 813. Gas collecting cavity; 814. Electrode; 821. Oxygen regulating pipe; 8211. Oxygen outlet; 8212. Oxygen inlet; 8316. Baffle; 8317. Cavity wall; 8321. Gas filter outlet; 841. Liquid replenishment pipe;8411, Liquid replenishment outlet; 8412, Liquid inlet; 710, Mounting section; 720, Liquid storage section; 730, Electrode assembly; 750, Liquid level sensor; 601, Chamber; 70, Door; 101, Reaction chamber; 102, Vent outlet; 103, Liquid injection port; 104, Mounting opening; 105, Bottom wall; 106, Side wall; 7201, Liquid storage chamber; 302, Anode; 3021, Vent hole. Detailed Implementation

[0212] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts are enlarged relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0213] The terms used in this embodiment, such as "upper," "above," "lower," and "below," which indicate spatial relative positions, are used for ease of explanation to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative position" may be intended to include different orientations of the device besides those shown in the figures during use or operation. For example, in this embodiment, "upper," "lower," "left," "right," "front," and "rear" all refer to the spatial relative positions of the refrigerator under normal operating conditions.

[0214] The terms "first," "second," "third," "fourth," etc., used in this application are only for describing various elements, structures, or parameters; however, the described objects should not be limited by these terms. These terms are only used to distinguish these described objects from one another and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Furthermore, it should be noted that unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0215] It should be noted that in this application, "oxygen-rich space" refers to a space with a relatively high oxygen concentration, in which users can store oxygen-loving ingredients; "oxygen-deficient space" refers to a space with a relatively low oxygen concentration, in which users can store ingredients that are prone to oxidation.

[0216] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0217] Referring to Figures 1 and 60, one embodiment of this application provides a refrigeration device 100, including a housing 1, wherein the housing 1 has a compartment 601.

[0218] The refrigeration equipment 100 also includes a door 70, which is pivotally connected to the housing 1 to open or close the compartment 601.

[0219] The housing 1 may include an outer shell and multiple inner liner. The outer shell is located on the outermost side of the refrigeration equipment 100 to protect the entire refrigeration equipment 100. The multiple inner liners are enclosed by the outer shell, and the space between them is filled with insulation material (forming a foam layer) to reduce heat loss from the inner liners. Each inner liner may define a forward-opening compartment 601, and a door 70 is movably disposed at the front of the inner liner to open and close the compartment 601 of the inner liner.

[0220] The refrigeration equipment 100 also includes a refrigeration system that provides cooling capacity to the room 601. The refrigeration system includes a compressor, condenser, evaporator, etc., connected by pipes.

[0221] Compartment 601 can be configured as a refrigerator compartment, freezer compartment, variable temperature compartment, fresh food compartment, etc., and the specific number and function of compartments 601 can be configured according to pre-defined needs. Of course, variable temperature compartments, fresh food compartments, etc., can also be independent spaces separate from the refrigeration equipment and can be placed inside compartment 601. When the fresh food compartment is located in compartment 601, it can obtain cooling energy through heat exchange with compartment 601 to achieve cooling.

[0222] Compartment 601 can be either a low-oxygen compartment or a high-oxygen compartment. A low-oxygen compartment is one where the oxygen concentration is lower than that in the air, making it an oxygen-deficient space; a high-oxygen compartment is one where the oxygen concentration is higher than that in the air, making it an oxygen-rich space. Both high-oxygen and low-oxygen environments can improve the preservation of food.

[0223] Among them, a low-oxygen environment can inhibit the aerobic respiration of fruits and vegetables, reduce the consumption of organic matter such as sugar, and also minimize their anaerobic respiration, so as to prevent the production of substances such as alcohol by anaerobic respiration, which would affect the quality of fruits and vegetables.

[0224] In a high-oxygen environment, not only can the growth and reproduction of anaerobic bacteria be inhibited, but the higher concentration of oxygen can also combine with deoxymyoglobin on the surface of muscle to form a thicker layer of oxymyoglobin, thereby maintaining the bright red color of meat, improving the color stability of meat, and thus improving the preservation effect of meat.

[0225] As shown in Figures 2 to 12, the refrigeration equipment 100 also includes a controlled atmosphere device 2.

[0226] When the controlled atmosphere device 2 is used in a low-oxygen chamber, the controlled atmosphere device 2 is configured to consume the oxygen in the low-oxygen chamber.

[0227] When the controlled atmosphere device 2 is used in the hyperoxia chamber, the controlled atmosphere device 2 is configured to supply oxygen to the hyperoxia chamber.

[0228] Thus, when the refrigeration equipment 100 has both high-oxygen and low-oxygen chambers, the controlled atmosphere device 2 can increase the oxygen concentration in the high-oxygen chamber while reducing the oxygen concentration in the low-oxygen chamber.

[0229] Referring to Figures 2 to 5, the modified atmosphere device 2 includes a modified atmosphere module 21, a liquid storage box 22, and a modified oxygen path 23.

[0230] The modified atmosphere module 21 is used to prepare oxygen-modified gas, and the modified atmosphere module 21 has a gas collection chamber 813, in which the oxygen-modified gas prepared by the modified atmosphere module 21 is collected.

[0231] The gas used for adjusting the oxygen can be oxygen, hydrogen, etc. Correspondingly, the gas collection chamber 813 can be an oxygen collection chamber, a hydrogen collection chamber, etc. This embodiment only uses the oxygen collection chamber as an example for specific explanation. The structure of the hydrogen collection chamber or other gas collection chamber can be the same as that of the oxygen collection chamber, and will not be described in detail here.

[0232] As shown in Figures 6 to 9, the oxygen regulating circuit 23 connects the gas collecting chamber 813 and the liquid storage box 22. The end tube 231 of the oxygen regulating circuit 23 is inserted below the liquid surface of the liquid storage box 22. The oxygen regulating circuit 23 has a backflow buffer chamber 232.

[0233] Thus, the oxygenated gas prepared by the modified atmosphere module 21 is transported to the liquid storage box 22 via the oxygenated gas passage 23. Since the end tube 231 of the oxygenated gas passage 23 is inserted below the liquid surface of the liquid storage box 22, the oxygenated gas will enter the solution in the liquid storage box 22. This allows the oxygenated gas to be washed with water to remove electrolyte particles carried in the oxygenated gas, thereby preventing the oxygenated gas from carrying electrolyte particles into the chamber 601 when it is sent into the chamber 601, so as not to contaminate the food in the chamber 601. When the modified atmosphere module 21 undergoes an electrochemical reaction, its internal temperature will rise. When the modified atmosphere module 21 stops working, its internal gas pressure will decrease as the temperature decreases. The backflow buffer chamber 232 in the oxygenated gas passage 23 can prevent the solution in the liquid storage box 22 from being backflowed into the modified atmosphere module 21 due to the decrease in gas pressure in the modified atmosphere module 21.

[0234] In this embodiment, water is used as the solution. The oxygen-controlled gas is washed with water to remove the electrolyte particles carried in the gas, allowing the electrolyte particles to dissolve in the water.

[0235] Referring to Figures 6 to 9, in one embodiment, the liquid storage box 22 has a liquid storage chamber 220. The liquid storage chamber 220 includes a filter zone 221 for filtering gas. The end pipe 231 of the gas conditioning path 23 is inserted below the liquid surface of the filter zone 221. That is, the filter zone 221 is integrated into the liquid storage box 22. In this way, the liquid level of the filter zone 221 can be adjusted using the water in the liquid storage box 22. Furthermore, the gas conditioning gas prepared by the modified atmosphere module 21 is transported to the filter zone 221 via the gas conditioning path 23 and enters the solution in the filter zone 221 to achieve water washing of the gas conditioning gas to remove electrolyte particles carried in the gas conditioning gas, thereby preventing the gas conditioning gas from carrying electrolyte particles into the chamber 601 when it is delivered, so as to avoid contamination of the food in the chamber 601.

[0236] The effective depth of the end tube 231 inserted below the liquid surface in the filtration zone 221 is given by , the liquid surface area of ​​the filtration zone 221 is given by s, and the volume of the backflow buffer chamber 232 is v > h × s. The effective depth of the end tube 231 inserted below the liquid surface in the filtration zone 221 refers to the distance from the closest point of the end of the end tube 231 to the liquid surface.

[0237] By limiting the relationship between the volume v of the backflow buffer chamber 232, the effective depth h of the end tube 231 inserted below the liquid surface of the filter zone 221, and the liquid surface area s of the filter zone 221, v>h×s, even if water in the filter zone 221 is backflowed, the volume of the backflowed water is less than the volume of the backflow buffer chamber 232, and the backflowed water will be stored in the backflow buffer chamber 232. In this way, the backflowed water can be prevented from being backflowed into the controlled atmosphere module 21. When the controlled atmosphere module 21 starts to work, its internal temperature rises and the air pressure rises accordingly. The water in the backflow buffer chamber 232 will flow back into the filter zone 221 under the action of air pressure.

[0238] In another embodiment, the liquid storage box 22 includes a water supply box and a filter box, and the end pipe 231 of the oxygen regulating circuit 23 is inserted below the liquid surface of the filter box. Thus, the water supply box and the filter box can be installed separately and not connected to each other; of course, the water supply box and the filter box can also be connected together, but they are isolated from each other. This facilitates manufacturing.

[0239] The effective depth of the end tube 231 inserted below the liquid surface in the filter box is h', the liquid surface area of ​​the filter box is s', and the volume of the backflow buffer chamber 232 is v > h' × s'. The so-called effective depth of the end tube 231 inserted below the liquid surface in the filter box refers to the distance from the closest point of the end of the end tube 231 to the liquid surface.

[0240] By limiting the relationship between the volume v of the backflow buffer chamber 232, the effective depth h' of the end tube 231 inserted below the liquid surface of the filter box, and the liquid surface area s' of the filter box, which satisfies v>h'×s', even if the water in the filter box is backflowed, the volume of the backflowed water is less than the volume of the backflow buffer chamber 232, and the backflowed water will be stored in the backflow buffer chamber 232. In this way, the backflowed water can be prevented from being backflowed into the controlled atmosphere module 21. When the controlled atmosphere module 21 starts to work, its internal temperature rises and the air pressure rises accordingly. The water in the backflow buffer chamber 232 will flow back into the filter box under the action of air pressure.

[0241] The terminal pipe 231 is located in the liquid storage box 22. That is to say, the terminal pipe 231 is the pipe section of the oxygen regulating line 23 located in the liquid storage box 22. This makes it convenient to send the oxygen regulating gas into the water of the filtration zone 221 for water washing and filtration.

[0242] As shown in Figure 2, the oxygen conditioning circuit 23 also includes a connecting pipe 233 that connects the terminal pipe 231 to the conditioning module 21. The connecting pipe 233 is located outside the liquid storage box 22.

[0243] Referring to Figures 6 to 9, in one embodiment, the end tube 231 surrounds the backflow buffer chamber 232. That is, the backflow buffer chamber 232 is located within the end tube 231. In other words, the wall of the end tube 231 forms the cavity wall 8317 of the backflow buffer chamber 232. Thus, when the temperature and air pressure inside the controlled atmosphere module 21 increase, the water in the backflow buffer chamber 232 will smoothly flow back into the filter zone 221 under the action of air pressure, greatly reducing the risk of water being backflowed into the controlled atmosphere module 21.

[0244] An air intake channel 2331 is formed inside the connecting pipe 233, and the air intake channel 2331 is connected to the upper part of the back suction buffer chamber 232.

[0245] In other embodiments, the backflow buffer cavity 232 may also be formed in the connecting pipe 233.

[0246] As shown in Figures 6 to 9, the controlled atmosphere device 2 also includes an exhaust pipe 24 disposed in the liquid storage box 22. The exhaust pipe 24 has an exhaust passage 241.

[0247] The back suction buffer chamber 232, the air intake channel 2331, and the exhaust channel 241 are located at the filter area 221 corresponding to the top cover 224.

[0248] The air inlet 242 of the exhaust pipe 24 is located below the liquid surface of the filter zone 221. In this way, the oxygenated air that has been washed by water in the filter zone 221 can be delivered into the chamber 601 through the exhaust pipe 24.

[0249] In one embodiment, the air inlet 242 of the exhaust pipe 24 is lower than the liquid level of the lowest water level in the filtration zone 221. Thus, the gas regulating device 2 has a gas filtration function. Regulated oxygen flows from the air inlet channel 2331 into the backflow buffer chamber 232. As the gas in the backflow buffer chamber 232 increases, it enters the filtration zone 221 below the liquid level under pressure, and is then discharged through the exhaust channel 241, thereby completing the filtration process.

[0250] Referring to Figures 7 to 12, the end pipe 231 includes a first pipe section 2311, which includes a first pipe wall 23111 and a second pipe wall 23112 disposed opposite to each other. The first pipe wall 23111 separates the exhaust channel 241 from the back suction buffer chamber 232. The second pipe wall 23112 is located on the side of the first pipe wall 23111 away from the exhaust pipe 24. The depth of the first pipe wall 23111 inserted into the liquid surface of the filter zone 221 is less than the depth of the second pipe wall 23112 inserted into the liquid surface of the filter zone 221. The effective depth h of the end pipe 231 inserted into the liquid surface of the filter zone 221 is the depth of the first pipe wall 23111 inserted into the liquid surface of the filter zone 221.

[0251] In other words, the exhaust passage 241 and the backflow buffer chamber 232 are arranged adjacent to each other and separated by the first pipe wall 23111. That is, the end pipe 231 and the exhaust pipe 24 share the first pipe wall 23111. Thus, the air inlet 242 of the exhaust pipe 24 is located at the first pipe wall 23111.

[0252] In this way, through the structural design of the exhaust pipe 24 and the end pipe 231, the oxygenated water entering the filtration zone 221 can float into the exhaust channel 241 after the electrolyte particles are removed by water washing, and then be sent into the chamber 601 through the exhaust pipe 24.

[0253] As shown in Figures 6 to 9, the first pipe section 2311 also includes a third pipe wall 23113 and a fourth pipe wall 23114. The third pipe wall 23113 and the fourth pipe wall 23114 are respectively connected to the first pipe wall 23111 and the second pipe wall 23112. The first pipe wall 23111, the third pipe wall 23113 and the fourth pipe wall 23114 are all inserted into the filtration zone 221 to a depth of h below the liquid surface.

[0254] This ensures that the oxygen flow after water washing can float upwards from the first pipe wall 23111, the third pipe wall 23113 and the fourth pipe wall 23114 into the exhaust channel 241, preventing the oxygen flow after water washing from floating upwards to the second pipe wall 23112 side, thereby increasing the flow rate of the oxygen flow into the chamber 601.

[0255] Referring to Figures 6 to 9, the exhaust pipe 24 also includes a limiting wall 243. The limiting wall 243 is located on the side of the first pipe wall 23111 opposite to the second pipe wall 23112. An exhaust channel 241 is formed between the limiting wall 243 and the first pipe wall 23111, and the depth to which the limiting wall 243 is inserted below the liquid surface of the filter zone 221 is greater than the depth h to which the first pipe wall 23111 is inserted below the liquid surface of the filter zone 221. In this way, the limiting wall 243 can restrict the flow direction of the oxygen-regulating flow after water washing, which is conducive to the smooth entry of the oxygen-regulating flow after water washing into the exhaust channel 241 from the first pipe wall 23111.

[0256] In this embodiment, the depth to which the limiting wall 243 is inserted below the liquid surface of the filtration zone 221 is the same as the depth to which the second pipe wall 23112 is inserted below the liquid surface of the filtration zone 221.

[0257] Referring to Figures 6 to 9, the exhaust pipe 24 also includes a first connecting plate 244 and a second connecting plate 245 arranged opposite to each other. The first connecting plate 244 and the second connecting plate 245 are respectively connected to the limiting wall 243 and the second pipe wall 23112, and the first connecting plate 244 and the second connecting plate 245 are located on opposite sides of the end pipe 231. In this way, the space between the end pipe 231 and the exhaust pipe 24 can form an exhaust channel 241, so that the oxygen flow after water washing can enter the exhaust channel 241 from the first pipe wall 23111, the third pipe wall 23113 or the fourth pipe wall 23114, thereby improving the exhaust efficiency.

[0258] In this embodiment, the cross-sectional area of ​​the end pipe 231 remains unchanged along the direction in which the liquid level in the filtration zone 221 decreases. This allows for a smaller diameter of the end pipe 231, preventing it from occupying more space and thus avoiding an increase in the volume of the controlled atmosphere device 2, while also facilitating manufacturing.

[0259] The first pipe wall 23111, the second pipe wall 23112, the third pipe wall 23113 and the fourth pipe wall 23114 together form the back suction buffer chamber 232.

[0260] In this embodiment, the end tube 231 has a square cross-section, which facilitates processing.

[0261] As shown in Figures 7 to 12, in another embodiment, the end tube 231 is configured as a flared tube, which is beneficial for forming a backflow buffer.

[0262] In one specific embodiment, the cross-sectional area of ​​the end tube 231 gradually increases along the direction in which the liquid level in the filtration zone 221 decreases.

[0263] Specifically, along the direction of the decrease in liquid level in the filtration zone 221, the first tube wall 23111 and the second tube wall 23112 gradually move away from each other, and / or the third tube wall 23113 and the fourth tube wall 23114 gradually move away from each other.

[0264] Referring to Figures 6 to 9, in another specific embodiment, the flared pipe further includes a second pipe segment 2312, which connects the first pipe segment 2311 and the connecting pipe 233. The cross-sectional area of ​​the first pipe segment 2311 is larger than that of the second pipe segment 2312. The first pipe segment 2311 and the second pipe segment 2312 together enclose the back suction buffer cavity 232.

[0265] Specifically, along the direction of the decrease in liquid level in the filtration zone 221, that is, along the direction closer to the first pipe section 2311, the cross-sectional area of ​​the second pipe section 2312 gradually increases.

[0266] Along the direction of the decrease in liquid level in the filtration zone 221, the cross-sectional area of ​​the first pipe section 2311 can be set to remain constant or gradually increase.

[0267] As shown in Figures 7 to 12, the liquid storage chamber 220 also includes a liquid storage area 222. The filtration area 221 is connected to the liquid storage area 222, so that the solution in the liquid storage area 222 can flow into the filtration area 221 as a filtration medium.

[0268] The liquid storage box 22 also includes a liquid level limiting mechanism. The liquid storage area 222 is connected to the modified atmosphere module 21 and replenishes the modified atmosphere module 21 with liquid. The liquid level limiting mechanism limits the liquid level height of the filtration area 221. On the one hand, when the liquid level in the filtration area 221 exceeds a preset height, and the liquid level in the storage area 222 is lower than the preset height, the solution exceeding the preset height in the filtration area 221 enters the storage area 222. This can prevent the liquid level in the filtration area 221 from being too high, thereby preventing too much solution from entering the backflow buffer chamber 232 from the filtration area 221 during backflow, which would cause the solution to enter the modified atmosphere module 21. On the other hand, when the solution in the storage area 222 is consumed, the liquid level limiting mechanism can limit the minimum liquid level in the filtration area 221, preventing the filtration area 221 from failing due to excessive consumption of solution in the storage area 222.

[0269] Referring to Figures 1 to 12, specifically, the liquid storage box 22 includes a box body 223 and a top cover 224, with the box body 223 connected to the top cover 224. Both the liquid storage area 222 and the filtration area 221 are located within the box body 223. The top cover 224 is disposed on top of the box body 223 and covers it, thus closing the opening at the top of the box body 223.

[0270] The top cover 224 can be fixed to the box body 223 by means of clips, screws, etc.

[0271] The liquid level limiting mechanism is a partition 25 located between the liquid storage area 222 and the filtration area 221. The partition 25 extends upward from the bottom of the housing 223. A liquid replenishment channel 251 is formed between the partition 25 and the top cover 224, connecting the liquid storage area 222 and the filtration area 221. That is, the liquid storage area 222 and the filtration area 221 are connected from the upper side of the partition 25.

[0272] In this way, the height of the baffle 25 limits the preset height of the liquid level in the filtration zone 221. When the liquid level in the filtration zone 221 is higher than the upper end of the baffle 25, the solution in the filtration zone 221 that exceeds the baffle 25 will enter the storage zone 222 through the replenishment channel 251 formed between the baffle 25 and the top cover 224, thereby preventing the liquid level in the filtration zone 221 from being too high.

[0273] On the other hand, the upper edge of the partition 25 defines the minimum water level of the filtration zone 221, so that when the solution in the storage zone 222 is consumed, the liquid level in the filtration zone 221 will not be lower than the upper edge of the partition 25.

[0274] The upper end of the partition 25 is higher than the air inlet 242 of the exhaust pipe 24, which can prevent the oxygen flow after water washing from entering the liquid storage area 222 through the liquid replenishment channel 251 formed between the partition 25 and the top cover 224.

[0275] The lower edge of the wall of the end pipe 231, which is also the wall 8317 of the backflow buffer chamber 232, is lower than the upper end of the partition 25. In other words, the lower edge of the wall 8317 of the backflow buffer chamber 232 is lower than the plane where the lowest water level of the filtration zone 221 is located. This design allows the solution in the filtration zone 221 to form a liquid seal on the lower end of the backflow buffer chamber 232, thereby ensuring that all the gas collected in the backflow buffer chamber 232 can be filtered.

[0276] The air inlet of the air inlet channel 2331 is located inside the cavity wall 8317 of the back suction buffer chamber 232. Furthermore, the air inlet of the air inlet channel 2331 is positioned higher than the lower edge of the cavity wall 8317 of the back suction buffer chamber 232. This ensures that the gas entering the filter zone 221 for water washing via the air inlet channel 2331 is collected to the maximum extent by the back suction buffer chamber 232.

[0277] In one embodiment, the air intake channel 2331 is located on the side of the back suction buffer chamber 232 away from the partition 25. This can minimize the risk of gas entering the filter zone 221 for water washing through the air intake channel 2331 entering the liquid storage zone 222.

[0278] In one embodiment, referring to Figures 53 to 56, the plane containing the bottom wall of the filtration zone 221 is lower than the plane containing the bottom wall of the liquid storage zone 222. As shown in the figures, the bottom wall of the filtration zone 221 is a first bottom wall 2231, and the bottom wall of the liquid storage zone 222 is a second bottom wall 2232. Since the first bottom wall 2231 is lower than the second bottom wall 2232, it can be ensured that there is sufficient solution inside the filtration zone 221 to participate in the water washing action, thereby ensuring the water washing effect.

[0279] The exhaust pipe 24 is located on the side of the end pipe 231 away from the liquid storage area 222. This prevents the oxygen flow that has been washed with water from entering the liquid storage area 222 and affecting the gas pressure in the liquid storage area 222, which in turn affects the replenishment of the liquid storage area 222.

[0280] Referring to Figures 2 and 3, the liquid storage box 22 is also provided with a liquid replenishment port 26, which connects the liquid storage chamber 220 and the outside of the liquid storage box 22. The liquid replenishment port 26 is located in the liquid storage area 222.

[0281] Specifically, the replenishment port 26 is located on the top cover 224. Users can add solutions (such as electrolyte or water) to the liquid storage area 222 through the replenishment port 26 so that the liquid storage area 222 has an appropriate amount of solution (such as electrolyte or water).

[0282] Referring to Figures 37 to 49, the modified atmosphere module 21 includes an electrolysis module 30. The electrolysis module 30 has the function of producing oxygen and producing hydrogen or consuming oxygen.

[0283] The electrolysis module 30 includes a housing 211. Thus, the housing 211 is disposed inside the enclosure 1.

[0284] Specifically, an electrolyte receiving cavity 812 is formed inside the shell 211, and the electrolyte receiving cavity 812 is filled with electrolyte for preparing oxygen-controlled gas.

[0285] The housing 211 is provided with a liquid inlet 212. The liquid storage box 22 is provided with a liquid outlet 2221. The liquid outlet 2221 can be connected to the liquid inlet 212 through a pipeline. That is, the liquid storage box 22 is connected to the electrolyte container cavity 812 through the liquid outlet 2221, thereby realizing the electrolyte replenishment operation of the modified atmosphere module 21.

[0286] The liquid storage box 22 also includes a replenishment area 227. The liquid storage area 222, the filtration area 221 and the replenishment area 227 are interconnected. The replenishment area 227 is connected to the electrolyte container cavity 812. Water in the liquid storage box 22 is transported from the replenishment area 227 to the electrolyte container cavity 812.

[0287] The modified atmosphere device 2 also includes a power supply and a controller, which is connected to the modified atmosphere module 21.

[0288] As shown in Figure 65, the electrolysis module 30 also includes an electrode assembly 730. The electrode assembly 730 is powered by a power source and connected to the positive and negative terminals of the power source. It can consume or increase the composition of a specific gas (e.g., oxygen) in the modified atmosphere device 2 through an electrochemical reaction, and adjust the proportion of the specific gas in the chamber 601 by utilizing the airflow communication between the modified atmosphere device 2 and the chamber 601.

[0289] The electrode assembly 730 includes multiple electrodes 814. Electrodes 814 and a gas collecting chamber 813 are also disposed within the housing 211. The electrolyte in the electrolyte container 812 is connected to the reaction zone of the electrode 814, and the gas collecting chamber 813 is also connected to the reaction zone of the electrode 814. An oxygen-regulating gas is separated from the electrolyte in the electrolyte container through an electrochemical reaction. This oxygen-regulating gas enters the gas collecting chamber 813 and is then transported to the high-oxygen chamber and / or low-oxygen chamber, thereby achieving oxygen concentration regulation in the high-oxygen and low-oxygen chambers.

[0290] In an optional embodiment, electrode 814 may also be disposed in a low-oxygen chamber or in a chamber 601 connected to the low-oxygen chamber. Electrode 814 is in contact with the air in the low-oxygen chamber and undergoes an oxidation-reduction reaction with oxygen in the air, which can consume oxygen in the low-oxygen chamber to reduce the oxygen concentration in the low-oxygen chamber.

[0291] Electrode 814 includes at least one anode 302 and at least one cathode 213. The anode 302 is controllably connected to the positive terminal of the power supply, and the cathode 213 is controllably connected to the negative terminal of the power supply.

[0292] Thus, when the modified atmosphere module 21 is running, under the control of the controller, the positive terminal of the power supply is connected to the anode 302 and the negative terminal of the power supply is connected to the cathode 213, meaning that the power supply supplies power to the modified atmosphere module 21. When the controller controls the modified atmosphere module 21 to stop running, under the control of the controller, the positive terminal of the power supply is disconnected from the anode 302 and the negative terminal of the power supply is disconnected from the cathode 213, meaning that the power supply stops supplying power to the modified atmosphere module 21.

[0293] The cathode 213 and anode 302 are spaced apart. Electrolyte is contained within the gap 1300 between the cathode 213 and anode 302. The anode 302 is disposed within the electrolyte containment cavity 812, and the housing 211 has an opening area for the cathode 213 to expose its outer surface. A first side of the cathode 213 is exposed within the inner cavity of the housing 211, and a second side is exposed to the external air of the modified atmosphere module 21 through the opening area.

[0294] When the controlled atmosphere module 21 is running, that is, when it is energized, the cathode 213 is used to consume the oxygen in the outside air of the controlled atmosphere module 21 through an electrochemical reaction. Specifically, the oxygen in the air undergoes a reduction reaction at the location of the cathode 213, and the reaction formula is O2 + 2H2O + 4e -→4OH - This reduces the oxygen content outside the casing 211, creating an oxygen-deficient preservation atmosphere outside the modified atmosphere module 21. One or both sides of the anode 302 are exposed in the electrolyte containment cavity 812. The anode 302 is used to generate oxygen in the electrolyte containment cavity 812 through an electrochemical reaction to create an oxygen-rich preservation atmosphere. Specifically, the OH- produced by the cathode 213... - An oxidation reaction can occur at the 302 anode to generate oxygen, with the reaction formula being 4OH⁻. - →O2 + 2H2O + 4e - The generated oxygen can be discharged through the exhaust port provided on the shell 211 and collected to form an oxygen-rich preservation atmosphere.

[0295] Oxygen generated by the anode 302 of the modified atmosphere module 21 is collected in the gas collection chamber 813, then discharged through the exhaust port on the housing 211, and subsequently introduced into the filter area 221 of the liquid storage box 22 through the oxygen control path 23 and the air intake channel 2331 to achieve water washing of the oxygen and remove electrolyte particles carried in the oxygen. In this way, water washing and liquid replenishment can be integrated into one structure, eliminating the need for a separate water washing structure and liquid replenishment operation, reducing piping connections and the required installation space.

[0296] Both the cathode 213 and the anode 302 can be configured as plates. The anode 302 plate disposed inside the housing 211 can be provided with multiple through holes to increase the surface area of ​​the anode 302 and allow electrolyte or air bubbles in the electrolyte containment cavity 812 to pass through.

[0297] Referring to Figures 21 to 37, the modified atmosphere device 2 also includes a replenishment tank 10. The replenishment tank 10 and the aforementioned reservoir 22 constitute at least part of the automatic replenishment system. The replenishment tank 10 is detachably installed into the reservoir 22.

[0298] The fluid replenishment box 10 includes a box body, a fluid inlet 150, an air hole, and a balance airway 13.

[0299] Referring to Figures 31 and 32, the main body of the box has a first wall 11 and a second wall 12 disposed opposite to each other, and a liquid storage space 100 is defined between the first wall 11 and the second wall 12. It can be understood that when replenishing solution into the replenishment box 10, the liquid storage height of the replenishment box 10 is defined between the first wall 11 and the second wall 12.

[0300] The filling port 150 is located on the side where the first wall 11 is located. That is, the filling port 150 can be directly set on the first wall 11; or other structures for setting the filling port 150 can be connected to the first wall 11, as described later, the first wall 11 is connected to the cover assembly 15, and the filling port 150 is formed on the cover assembly 15.

[0301] The vent is formed on the second wall 12. Based on this arrangement, when the replenishment box 10 is inverted so that the filling port 150 faces downward to replenish the mechanism located below it, the vent is located at the highest position of the box body.

[0302] The replenishment tank 10 has a first maximum liquid level line and a second maximum liquid level line. When the replenishment tank 10 is inverted, it is in the dispensing state with the filling port 150 facing downwards. Once the liquid level in the replenishment tank 10 reaches the first maximum liquid level line, no more liquid can be added. When the replenishment tank 10 is in the replenishment state, it is upright with the filling port 150 facing upwards, and the second maximum liquid level line represents the maximum liquid level height for replenishment.

[0303] The two ends of the balancing airway 13 are respectively connected to the vent and the liquid storage space 100, and one section of the balancing airway 13 is located on the side of the plane containing the inner surface of the first wall 11 that faces away from the second wall 12. That is, the balancing airway 13 has a first end connected to the vent and a second end connected to the liquid storage space 100. In the liquid dispensing state, the first highest liquid level line is not higher than the vent; in the liquid replenishment state, the second highest liquid level line is not higher than the second end of the balancing airway 13.

[0304] Referring to Figures 21 to 37, when the replenishment box 10 is inverted so that the filling port 150 faces downwards to replenish the mechanism below it, the two ends of the balancing air passage 13 are connected to the air hole and the liquid storage space 100, respectively. The balancing air passage 13 can balance the air pressure inside and outside the replenishment box 10, allowing the solution inside the replenishment box 10 to flow out smoothly. Correspondingly, when the replenishment box 10 needs to be replenished, the replenishment box 10 is upright. Since a section of the balancing air passage 13 is located on the side of the plane where the inner surface of the first wall 11 is located, away from the second wall 12, the solution replenished into the replenishment box 10 can be effectively prevented from flowing out of the balancing air passage 13.

[0305] The replenishment port 26 is connected to the addition port 150. The solution (such as electrolyte) in the replenishment box 10 can be added to the storage box 22 through the addition port 150, which can quickly realize the replenishment operation without excessive operator intervention. The operation is simple and low cost.

[0306] Referring to Figures 13 to 16, the liquid storage box 22 also has a liquid control cavity. Both the liquid storage cavity 220 and the liquid control cavity are formed within the box body 223. The liquid storage cavity 220 is formed by a liquid storage cavity constituting wall 2201, and the liquid control cavity is formed by a liquid control cavity constituting wall 2021. The liquid storage cavity constituting wall 2201 and the liquid control cavity constituting wall 2021 together define the shape of the box body 223.

[0307] In some embodiments, the liquid storage chamber forming wall 2201 and the liquid control chamber forming wall 2021 are integrally formed, thereby avoiding problems such as leakage in the box 223.

[0308] Referring to Figure 18, the automatic liquid replenishment system also includes a liquid control component 27, which defines the liquid replenishment line of the liquid control chamber. The liquid replenishment line of the liquid control chamber refers to the liquid level that is lower than the liquid level when liquid is replenished from the liquid storage chamber 220 into the liquid control chamber.

[0309] The hydraulic control assembly 27 includes an isolation plate 271 and a hydraulic control tube 272. The isolation plate 271 separates the liquid storage chamber 220 from the liquid control chamber and has an inlet hole 411 connecting the liquid storage chamber 220 and the liquid control chamber. The first end of the hydraulic control tube 272 extends into the liquid control chamber, and the second end of the hydraulic control tube 272 extends into the outside of the liquid control chamber.

[0310] The first end of the hydraulic control tube 272 is the replenishment line position.

[0311] At least a portion of the lumen of the control tube 272 is above the third highest liquid level line of the reservoir 220. The third highest liquid level line of the reservoir 220 refers to the liquid level when no more solution can be added into the reservoir 220.

[0312] Referring to Figures 14 to 17 and Figures 35 to 36, when both the storage chamber 220 and the control chamber contain solutions (such as electrolyte), and the liquid level in the control chamber is flush with the first end of the control tube 272 (i.e., the lower end of the control tube 272 in Figures 16 and 17), the first end of the control tube 272 will be sealed by the solution in the control chamber, thus forming a gas cavity under the isolation plate 271. The solution in the storage chamber 220 cannot continue to flow into the control chamber through the inlet hole 411. When the solution in the control chamber decreases, the liquid level in the control chamber drops, the air cavity under the isolation plate 271 increases, the liquid seal at the first end of the control tube 272 is released, and the solution in the storage chamber 220 can flow into the control chamber through the inlet hole 411. The air cavity under the isolation plate 271 decreases until the first end of the control tube 272 is flush with the liquid level in the control chamber, at which point a liquid seal is formed again.

[0313] Thus, when the liquid storage box 22 replenishes the external mechanism such as the electrolysis module 30 through the liquid control chamber, the liquid storage chamber 220 can replenish the solution in the liquid control chamber in a timely and rapid manner, so that the solution in the liquid control chamber has a relatively stable liquid level, thereby ensuring that the liquid replenishment process of the liquid storage box 22 to the external mechanism is stable and reliable.

[0314] The following description, in conjunction with the accompanying drawings, further illustrates some representative embodiments of the fluid replenishment box 10 of this application.

[0315] Referring to Figures 24 to 27, the main body of the box also has a sidewall 14 connecting the peripheral edges of the first wall 11 and the second wall 12, and the balancing air passage 13 is attached to the inner surface of the sidewall 14. The sidewall 14 provides support for the balancing air passage 13, which can reduce the probability of damage to the balancing air passage 13. In specific implementations, the sidewall 14 can also form part of the wall of the balancing air passage 13, which can further reduce the molding material of the liquid replenishment box 10.

[0316] The fluid replenishment box 10 also has a groove 131, which is recessed from the inner surface of the first wall 11 toward the direction away from the second wall 12. The box body also has a connecting rib 130 extending from the second wall 12 toward the first wall 11. Both sides of the connecting rib 130 are connected to the side wall 14 to form a gas channel 132 communicating with the air vent. The end of the connecting rib 130 away from the second wall 12 extends into the groove 131 and forms a gap 1300 between it and the bottom wall of the groove 131. The gas channel 132 and the internal space of the groove 131 together constitute a balanced airway 13.

[0317] In this specific embodiment, the balancing airway 13 is located at one corner of the main body of the liquid replenishment box 10, and the connecting rib 130 is bent, with its two sides respectively connected to two adjacent different side walls 14, so as to form a gas channel 132 together with the two different side walls 14.

[0318] Referring to Figure 24, the first wall 11 has an opening, and the replenishment box 10 also has a cover assembly 15 disposed at the opening, with a filling port 150 disposed on the cover assembly 15. Thus, when the replenishment box 10 is upright, solution can be replenished into the liquid storage space 100 of the replenishment box 10 through the opening.

[0319] Referring to Figures 28, 29, and 30, the cover assembly 15 includes a main body 151 and a deformable portion 152 located in the middle region of the main body 151. The main body 151 is detachably connected to the box body, and the deformable portion 152 is fixedly connected to the main body 151 and has a liquid inlet 150. The liquid inlet 150 has a first closed state and a second open state. When the liquid inlet 150 is in the closed state, the solution inside the replenishment box 10 cannot be discharged from the liquid inlet 150; when the liquid inlet 150 is in the open state, the replenishment box 10 can replenish external mechanisms through the liquid inlet 150.

[0320] The first wall 11 protrudes outward at the opening to form a protruding part, and the main body 151 of the cover assembly 15 is detachably connected to the protruding part of the box body by means of threaded engagement.

[0321] The deformable part 152 is made of elastic material and has a cut 1520 in a localized area. The liquid inlet 150 is formed at the location of the cut 1520.

[0322] As shown in Figures 21, 22, 23, and 33, the replenishment port 26 on the reservoir 22 is designed as an upwardly protruding tube. When it is necessary to replenish the solution to the reservoir 22 through the replenishment box 10, the inverted replenishment box 10 can be placed so that the cut 1520 matches the position of the replenishment port 26. The replenishment box 10 falls under the action of gravity, causing the tube-shaped replenishment port 26 to open the cut 1520 and complete the docking of the filling port 150 and the replenishment port 26. After that, the solution in the replenishment box 10 can automatically flow into the reservoir 22 under its own gravity. External gas enters the interior of the replenishment box 10 through the balancing air passage 13 to ensure the balance of air pressure inside and outside the replenishment box 10.

[0323] It is understandable that, since the deformable part 152 is made of an elastic material, before the tubular liquid inlet 26 is inserted into the liquid inlet 150, the cut 1520 remains sealed under the elastic force of the deformable part 152 itself, thus ensuring that the solution inside the inverted liquid inlet box 10 does not leak out from the cut 1520. In specific implementation, the deformable part 152 can be made of silicone.

[0324] Referring to Figures 29 and 30, the cover assembly 15 also has a first fixing part 153, which is snapped onto the main body part 151, and the peripheral area of ​​the deformable part 152 is engaged and fixed between the main body part 151 and the first fixing part 153 to form a fixation.

[0325] The main body 151 has a peripheral wall 1511 for threaded engagement with the protrusion, an inner wall 1512 located inside the peripheral wall 1511, and a connecting wall 1513 connecting the peripheral wall 1511 and the inner wall 1512. The inner wall 1512 has a through hole in its center that matches the area of ​​the cutout 1520 in the deformable portion 152, and an inner protrusion 1510 protrudes inward from the inner surface of the inner wall 1512. The first fixing portion 153 is generally hollow and cylindrical, and fits into the through hole of the inner wall 1512. An outer protrusion 1531 is provided on the outer wall of the first fixing portion 153 to engage with the inner protrusion 1510. The deformable part 152 has a thickened locking area 1521 around its periphery, and the thickness of the locking area 1521 can be set to be greater than the thickness of other locations, thereby making it relatively less elastic relative to the area where the cut 1520 is located. The connecting wall 1513 has a flange 1514 extending into the area where the through hole is located, and the first fixing part 153 forms a groove 1530 at one end facing the flange 1514.

[0326] Thus, when the first fixing part 153 is engaged with the inner wall 1512 of the main body part 151 by the outer protrusion 1531 and the inner protrusion 1510, the locking area 1521 of the deformable part 152 is located in the slot 1530 and is squeezed and locked by the flange 1514, thereby fixing the deformable part 152 to the main body part 151.

[0327] In one embodiment, the fluid replenishment box 10 also has a limiting guide mechanism for guiding the installation of the fluid replenishment box 10.

[0328] Referring to Figures 22, 24, and 33, the limiting and guiding mechanism is a protruding structure disposed on a pair of opposing sidewalls 14. When constructing the automatic replenishment system, a guide groove is fixed to the side of the replenishment port 26 of the reservoir 22, which cooperates with the protruding structure to guide the replenishment box 10 to move downwards. Based on the cooperation between the protruding structure and the guide groove, when connecting the filling port 150 of the replenishment box 10 to the replenishment port 26 of the reservoir 22, it is only necessary to place the replenishment box 10 on the upper side of the reservoir 22 and engage the protruding structure outside the replenishment box 10 with the guide groove. The replenishment box 10 can then complete the connection between the filling port 150 and the replenishment port 26 under its own gravity, thereby completing the replenishment action.

[0329] In some embodiments, the automatic fluid replenishment system further includes a mounting box for housing the fluid reservoir 22. Referring to FIG24, the mounting box includes an upper housing 941 and a lower housing 942, which can be connected by snap-fit ​​or other means, and the interior of the mounting box forms a receiving cavity for accommodating the fluid reservoir 22.

[0330] The liquid storage box 22 is fixedly mounted relative to the upper housing 941. The upper housing 941 has a clearance hole 9411 at a position corresponding to the liquid replenishment port 26, allowing the liquid replenishment port 26 to be exposed upwards. Guide walls 9412 extend from opposite sides of the clearance hole 9411 on the upper housing 941. Guide grooves are formed on the guide walls 9412.

[0331] Each guide wall 9412 has a guide groove including a first guide groove 94121 and a second guide groove 94122. The protrusion structure on the replenishment box 10 includes a first protrusion 141 and a second protrusion 142 corresponding to the first guide groove 94121 and the second guide groove 94122, respectively. In other embodiments, the positions of the protrusion structure and the guide groove can be interchanged.

[0332] The electrolysis module 30 can also be installed inside the mounting box.

[0333] Unlike the embodiments shown in Figures 26 and 27, in some embodiments, the replenishment box 10 may also have the structure shown in Figures 31 and 32. The balancing airway 13 is composed of a pipe independent of the side wall 14, which communicates with the air holes on the second wall 12 and penetrates the first wall 11, and has an outer section located on the side of the first wall 11 away from the second wall 12.

[0334] In one embodiment, at least one pair of opposing sidewalls 14 of the refill box 10 have portions that protrude beyond the plane containing the outer surface of the first wall 11, and the end connecting plane of the protruding portions is parallel to the outer surface of the first wall 11. The cover assembly 15 is located on the side where the connecting plane faces the first wall 11. Based on this configuration, the refill box 10 can be placed stably on a support platform with a flat upper surface when inverted.

[0335] Referring to Figures 14 to 17 and Figures 34, 35 and 36, in this embodiment, the liquid control chamber is located below the liquid storage chamber 220.

[0336] Referring to Figures 19 and 20, in another embodiment, the liquid storage chamber 220 and the liquid control chamber are arranged side by side and separated by an isolation plate 271. The solution in the liquid storage area 222 can enter the liquid control chamber through the inlet hole 411 on the isolation plate 271. The liquid control pipe 272 is a straight pipe, with its first end (corresponding to the lower end in the figure) extending into the liquid control chamber. The liquid control pipe 272 passes through the top wall of the liquid control chamber forming wall 2021, and its second end (corresponding to the upper end in the figure) extends to the outside of the liquid control chamber. As shown in the figure, the lumen of the liquid control pipe 272 near its first end is higher than the highest liquid level line of the liquid storage chamber 220. This embodiment can also realize automatic liquid replenishment, which will not be described in detail here.

[0337] Referring to Figure 20, in another embodiment, the difference between this embodiment and the embodiment shown in Figure 19 is that the control pipe 272 is a bent pipe. This bent pipe includes a first vertical pipe with a first end, a second vertical pipe with a second end, and a horizontal pipe connecting the first and second vertical pipes. The section containing the horizontal pipe has a cavity higher than the highest liquid level line of the storage area 222. The control pipe 272 can pass through the side wall 14 of the control cavity forming wall 2021 to communicate with the outside. Furthermore, in this embodiment, the control cavity protrudes upwards relative to the control cavity in the embodiment shown in Figure 19, forming a portion for installing the horizontal pipe.

[0338] The second end (i.e., the upper end) of the control tube 272 extends to the upper part of the third highest liquid level line of the storage chamber 220. This prevents the solution in the storage chamber 220 from blocking the upper end of the control tube 272, thus avoiding failure of the control assembly 27.

[0339] In this embodiment, the lower surface of the top cover 224 is recessed upward to form an air cavity 203. Thus, the air cavity 203 is located above the liquid storage cavity 220. The upper end of the liquid control tube 272 extends into the air cavity 203.

[0340] In one embodiment, the top cover 224 extends upward to form a protrusion 2240. An air cavity 203 is formed on the lower surface side of the top cover 224 and corresponds to the position of the protrusion 2240.

[0341] In one embodiment, the diameter of the inlet hole 411 gradually decreases from the liquid storage chamber 220 toward the liquid control chamber. The inlet hole 411 on the main body 2711 gradually tapers from top to bottom. That is, in the direction from top to bottom, the inlet hole 411 is inverted funnel shape. This design structure can better guide the solution in the liquid storage chamber 220 to the liquid control chamber.

[0342] The minimum diameter of the liquid inlet hole 411 is not less than 3 mm to avoid excessive resistance to the entry of the solution.

[0343] When the liquid storage chamber 220 and the liquid control chamber are arranged vertically, the isolation plate 271 is located at the bottom of the liquid storage chamber 220, the upper surface of the isolation plate 271 is the bottom wall of the liquid storage chamber 220, and the lower surface of the isolation plate 271 is the top wall of the liquid control chamber.

[0344] In one embodiment, the hydraulic control tube 272 is fixed to the isolation plate 271. The hydraulic control tube 272 and the isolation plate 271 can be integrally formed; alternatively, a mounting hole can be opened on the isolation plate 271, through which the hydraulic control tube 272 is passed and fixed.

[0345] In other embodiments, the control pipe 272 may also be disposed separately from the isolation plate 271. For example, the control pipe 272 may extend directly through the control cavity forming wall 2021 and into the upper space of the liquid storage cavity 220, so that there is no connection structure between the control pipe 272 and the isolation plate 271.

[0346] Referring to Figure 36, the isolation plate 271 includes a main body 2711 and a second fixing part 2712. The main body 2711 has a liquid inlet 411, and the second fixing part 2712 is connected to the main body 2711. The liquid control assembly 27 also has a sealing ring 273. The sealing ring 273 is disposed between the second fixing part 2712 and the side wall 14 of the liquid control chamber.

[0347] In this embodiment, the main body 2711 is flat, and the second fixing part 2712 is hollow frame-shaped and integrally formed with the main body 2711. A mounting groove 2710 is formed on the periphery of the second fixing part 2712, and a sealing ring 273 is fitted into the mounting groove 2710. The sealing ring 273 is typically made of an elastic material such as rubber.

[0348] During the assembly of the liquid storage box 22, the sealing ring 273 can be first fitted into the mounting groove 2710 on the periphery of the second fixing part 2712, so that the liquid control assembly 27 forms a whole; then the liquid control assembly 27 is installed from the liquid storage cavity 220 side to the preset position, so that the sealing ring 273 and the liquid control cavity side wall 14 (i.e. the inner surface side of the liquid control cavity forming wall 2021) form a sealing fit.

[0349] Referring to Figure 36, the projection of the second fixing part 2712 onto the plane containing the lower surface of the main body 2711 is located inside the edge range of the lower surface, meaning that the main body 2711 has an edge protruding beyond the periphery of the second fixing part 2712. A step is provided at the periphery of the junction of the liquid storage chamber 220 and the liquid control chamber. Thus, during the assembly of the liquid storage box 22, when the edge of the main body 2711 of the isolation plate 271 overlaps with this step, it indicates that the liquid control assembly 27 has been installed in the appropriate position.

[0350] In some embodiments, after the liquid control assembly 27 is installed in place, the upper surface of the body portion 2711 of the isolation plate 271 is not higher than the plane of the bottom wall (such as the first bottom wall 2231) at other locations of the liquid storage cavity 220, thereby ensuring that the solution stored in the liquid storage cavity 220 can be utilized to the greatest extent.

[0351] In one embodiment, the cross-sectional area of ​​the liquid control chamber in the horizontal direction is smaller than that of the liquid storage chamber 220 in the horizontal direction. Referring to Figures 34, 35, and 36, the liquid control chamber forming wall 2021 is connected to the bottom of the liquid storage chamber forming wall 2201. The projection of the liquid control chamber forming wall 2021 onto the plane containing the bottom of the liquid storage chamber forming wall 2201 only covers a local area of ​​the bottom of the liquid storage chamber forming wall 2201. Since the liquid control chamber is formed within the liquid control chamber forming wall 2021, and the liquid storage chamber 220 is formed within the liquid storage chamber forming wall 2201, the cross-sectional area of ​​the liquid control chamber in the horizontal direction is smaller than that of the liquid storage chamber 220 in the horizontal direction. Thus, when the solution in the liquid storage chamber 220 enters the liquid control chamber to maintain a stable solution level in the liquid control chamber, the solution in the liquid storage chamber 220 has a slower rate of level drop, thus eliminating the need for frequent addition of liquid to the liquid storage chamber 220.

[0352] Referring to Figures 33 to 37, the liquid outlet 2221 is located at the bottom of the liquid control chamber 202. That is, the liquid outlet 2221 is located at the bottom of the liquid storage box 22. The first end of the liquid control tube 272 is not lower than the highest edge of the electrode 814. Thus, when the liquid level in the electrolysis module 30 is about to fall below the highest edge of the electrode 814, the liquid in the liquid control chamber will replenish the electrolyte receiving chamber 812, so that the electrode 814 is always in contact with the electrolyte.

[0353] A support and locking mechanism can also be provided between the automatic liquid replenishment system and the electrolysis module 30 to limit their positional relationship. Referring to Figures 4 and 5, clearance areas 31 are formed in the upper regions at both ends of the housing 211 of the electrolysis module 30. The automatic liquid replenishment system is disposed on one side of the electrolysis module 30, and the housing 223 has a protrusion extending toward the electrolysis module 30 and fitting into the clearance area 31. The clearance area 31 and the protrusion fit together to limit the relative positional relationship between the automatic liquid replenishment system and the electrolysis module 30, and the two together constitute the support and locking mechanism.

[0354] Example 2

[0355] Referring to Figures 50 to 59, another embodiment of this application is shown. The main difference between this embodiment and Embodiment 1 lies in the structure of the liquid storage box. Apart from this, the structure of this embodiment is the same as that of Embodiment 1, and will not be described again here.

[0356] Referring to Figures 52 and 53, the top cover 224 has a first top wall 2241 located in the liquid storage area 222 and a second top wall 2242 located in the filtration area 221 and the replenishment area 227. The second top wall 2242 is higher than the first top wall 2241. The replenishment port 26 is located on the first top wall 2241. When the water level in the liquid storage box 22 reaches the height of the first top wall 2241, the water level reaches its highest level, and it is impossible to replenish the liquid storage box 22 under normal pressure. As a result, an air cavity 203 is formed between the second top wall 2242 and the water surface, and water never accumulates in the air cavity 203.

[0357] When water needs to be added to the storage box 22, water is injected into the replenishment port 26. The water flows from the storage area 222 to the filtration area 221, and then to the replenishment area 227, thereby replenishing the water capacity in the electrolyte container 812.

[0358] The connection point between the oxygen regulating line 23 and the liquid storage box 22 is located on the second top wall 2242. The end pipe 231 extends from the second top wall 2242 into the liquid storage box 22 and is connected to the gas chamber 203. The connection point between the exhaust pipe 24 and the liquid storage box 22 is located on the second top wall 2242.

[0359] Referring to Figures 52 and 53, the housing 223 has a first bottom wall 2231 located in the filtration zone 221 and a second bottom wall 2232 located in the liquid storage zone 222. The first bottom wall 2231 is horizontally positioned. The second bottom wall 2232 gradually slopes away from the top cover 224 from the liquid replenishment port 26 toward the filtration zone 221, i.e., it slopes downwards. When water is replenished, water flows along the inclined second bottom wall 2232 toward the filtration zone 221. When the water capacity in the liquid storage box 22 is low, water is less likely to accumulate in the liquid storage zone 222, thus ensuring the water capacity of the filtration zone 221 to a certain extent.

[0360] The housing 223 also has a third bottom wall 2233 located in the replenishment zone 227. An outlet 2221 is located on the third bottom wall 2233. The replenishment zone 227 is connected to the electrolyte container 812 via the outlet 2221. During installation, a pipe can connect the outlet 2221 and the electrolyte container 812. Water from the replenishment zone 227 is replenished into the electrolyte container 812 through the outlet 2221, thus achieving replenishment.

[0361] As an example, the replenishment port 26 can be configured as a connecting pipe 233 protruding from the top cover 224, and the outlet port 2221 can be configured as a connecting pipe 233 protruding from the housing 223. A raised structure for increasing friction can be provided on the outside of the connecting pipe 233 to facilitate pipe connection during installation. The replenishment port 26 and the outlet port 2221 can also be configured as through holes or other structures, as long as they are configured to connect to the corresponding chambers; this embodiment does not impose specific limitations.

[0362] As an example, in this embodiment, the liquid storage area 222, the filtration area 221, and the replenishment area 227 are arranged sequentially along the liquid flow path. In optional embodiments, the arrangement order of the liquid storage area 222, the filtration area 221, and the replenishment area 227 is not limited. Of course, the liquid storage area 222, the filtration area 221, and the replenishment area 227 can be arranged sequentially in a horizontal direction, a vertical direction, or other directions, as long as liquid is always accumulated in the filtration area 221.

[0363] The replenishment level H of the replenishment zone 227 is higher than the first bottom wall 2231, and the lower edge of the end pipe 231 is lower than the replenishment level H. The replenishment level refers to the lowest liquid level that the liquid needs to reach to flow from the filtration zone 221 to the replenishment zone 227.

[0364] With this configuration, even if the water capacity in the liquid storage box 22 decreases, the water accumulated at the bottom of the filter zone 221 will not flow to the liquid replenishment zone 227 because the water level at the bottom of the filter zone 221 is lower than the replenishment line H. This ensures that water is always accumulated at the bottom of the filter zone 221, and oxygen can still be introduced into the water through the terminal pipe 231 for filtration. This ensures that all oxygen introduced into the refrigerator storage compartment is filtered, preventing impurities carried in the oxygen from contaminating the food in the storage compartment and reducing safety hazards.

[0365] Furthermore, since the water replenished each time flows along the path of the storage area 222, the filtration area 221, and the replenishment area 227, when water is replenished into the storage box 22, the newly replenished water will first flow into the filtration area 221 to dilute and replenish the water accumulated in the filtration area 221. This can continuously replace the water at the bottom of the filtration area 221 to ensure better oxygen filtration.

[0366] It should be noted that this application does not limit the shape of the filtration zone 221 and the replenishment zone 227. In this embodiment, both the filtration zone 221 and the replenishment zone 227 are approximately hexahedral in structure. In optional embodiments, the area of ​​the filtration zone 221 and the replenishment zone 227 is divided according to their respective functions.

[0367] Referring to Figure 53, a partition plate 229 is provided between the filtration zone 221 and the replenishment zone 227. The partition plate 229 extends from the first bottom wall 2231 toward the top cover 224, that is, it extends upwards. The partition plate 229 can be vertical or inclined. The upper edge of the partition plate 229 can be set as a horizontal plane, and the horizontal line where the upper edge of the partition plate 229 is located is the aforementioned replenishment line position H. The upper edge of the partition plate 229 can also be set as a folded surface, a curved surface, or an inclined surface, and the lowest horizontal line where the upper edge of the partition plate 229 is located is the aforementioned replenishment line position H.

[0368] A liquid control device is provided in the replenishment area 227. The liquid control device includes an inlet baffle 41 connected to the liquid storage box 22 and a first enclosure 42 connected below the inlet baffle 41. The inlet baffle 41 divides the replenishment area 227 into a first chamber located above and a second chamber located below. An inlet hole 411 is provided on the inlet baffle 41, and the first chamber and the second chamber are connected through the inlet hole 411. The filtration area 221 is connected to the first chamber, and the first chamber is connected to the electrolyte container chamber 812 through the second chamber. Water first flows from the filtration area 221 through the first chamber, then flows from the inlet hole 411 to the second chamber, and finally flows from the second chamber into the electrolyte container chamber 812.

[0369] In an optional embodiment, the aforementioned partition plate 229 can be removed, allowing the liquid inlet partition plate 41 and the first enclosure plate 42 to replace the liquid separation function of the partition plate 229. Referring to FIG54, the liquid inlet partition plate 41 can be configured as a horizontal shape, and the horizontal line where the upper end surface of the liquid inlet partition plate 41 is located is the aforementioned replenishment line position H.

[0370] Referring to Figure 54, the liquid inlet baffle 41' can also be set in an inclined shape. If the side of the liquid inlet baffle 41' facing the filter area 221 is higher than the side away from the filter area 221, then the horizontal line where the lowest point of the side of the liquid inlet baffle 41' facing the filter area 221 is located is the liquid replenishment line position H'.

[0371] Referring to Figure 55, the liquid inlet baffle 41 is inclined. If the side of the liquid inlet baffle 41 facing the filter zone 22110b is not higher than the side away from the filter zone 221, then the lowest horizontal line of the liquid inlet hole 411 facing the first chamber is the aforementioned replenishment line position H. There is a liquid inlet range P in the vertical direction on the side of the liquid inlet hole 411 facing the first chamber. When the liquid level reaches the height of this range P, the liquid flows into the liquid inlet hole 411. When the liquid level is lower than the lowest horizontal line of the range P, the liquid cannot flow into the liquid inlet hole 411.

[0372] Referring to Figure 56, in an optional embodiment, the aforementioned partition plate 229 can be removed, and the liquid separation function can be achieved by setting the liquid storage box 22 structure. The box body 223 is set as a sunken groove structure at the filtration zone 221, and the horizontal line of the bottom wall of the box body 223 near the liquid replenishment zone 227 is the aforementioned liquid replenishment line position H.

[0373] Thus, this application does not limit the specific structure of the filtration zone 221 and the replenishment zone 227 in the liquid storage box 22. As long as the water does not flow to other areas in the liquid storage box 22 after it falls below a certain level, so that the water is always stored in the filtration zone 221, then the level is the replenishment line H mentioned above.

[0374] Referring to FIG53, a gas barrier structure is provided in the filter area 221 of this application, and a second enclosure plate 2211 connected to the top cover 224 is provided in the filter area 221. The second enclosure plate 2211 is configured as a frame structure, and the end pipe 231 and the exhaust pipe 24 are arranged in the space enclosed by the second enclosure plate 2211.

[0375] The second enclosure 2211 extends downward from the top cover 224. The lower edge of the second enclosure 2211 is located within a horizontal range between the lower edge of the end pipe 231 and the first bottom wall 2231. Water is always accumulated within this horizontal range, thus forming a gas barrier space between the liquid surface and the inner wall of the second enclosure 2211. Filtered oxygen flows upward near the lower end of the end pipe 231. The filtered oxygen is concentrated in the gas barrier space and flows to the high-oxygen chamber through the exhaust pipe 24 to ensure the purity of the oxygen entering the high-oxygen chamber, making oxygen regulation more precise and efficient.

[0376] Referring to Figures 57 and 58, the second chamber is the liquid control zone. The liquid control system also includes a float rod 43 floating within the first enclosure 42 and a plug 44 connected to the float rod 43. The position of the plug 44 corresponds to the position of the liquid inlet 411 to block or open the liquid inlet 411. A crossbar 45 is fixed to the inner wall of the first enclosure 42. The float rod 43 includes a connecting part 431 rotatably connected to the crossbar 45, a connecting rod part 432 fixed to the connecting part 431, and a float part 433 fixed to the connecting rod part 432 away from the connecting part 431. An installation hole is provided at the middle position of the connecting rod part 432, and the plug 44 is fixed to the connecting rod part 432 through the installation hole.

[0377] The float part 433 has a sealed cavity. The float part 433 floats up and down with the water level in the second chamber. When the float part 433 floats up and down, it drives the connecting rod part 432 and the plug 44 to move up and down, causing the plug 44 to move between a sealed position and an unsealed position. The sealed position is when the plug 44 abuts against the liquid inlet baffle 41 to seal the liquid inlet hole 411; the unsealed position is when a gap 1300 is created between the plug 44 and the liquid inlet baffle 41, so that the liquid inlet hole 411 is in a clear state.

[0378] When the liquid level in the second cavity rises to a certain height, under the buoyancy of the float 433, the plug 44 abuts against the inlet baffle 41 at the position of the inlet hole 411, thus sealing the inlet hole 411. When the water level in the second cavity drops, the float 433 moves downward with the liquid level, causing the plug 44 to move and separate from the inlet baffle 41, switching the inlet hole 411 from a blocked state to a clear state. Therefore, water will automatically replenish and adjust according to the liquid volume in the second cavity, providing a more stable supply of water to the electrolyte container 812.

[0379] The liquid storage box 22 is equipped with a pressure balancing port 225, which is located above the first chamber. A pressure balancing pipe 226 is sealed and connected below the pressure balancing port 225. The pressure balancing pipe 226 passes through the first chamber and connects to the second chamber, thus connecting the second chamber to the outside of the liquid storage box 22. When replenishing electrolyte into the electrolyte receiving chamber 812 in the second chamber, the pressure balancing pipe 226 can supply air into the second chamber to balance the pressure inside, ensuring smooth replenishment of electrolyte into the electrolyte receiving chamber 812. The upper end of the pressure balancing pipe 226 can also extend into the air chamber 203, connecting the second chamber to the space outside the second chamber, ensuring that the pressure inside the second chamber is consistent with the pressure in the external space.

[0380] This application does not limit the specific structural shape of the liquid storage box 22 and its interior.

[0381] In some embodiments, the liquid storage box 22 has a first part, a second part and a third part respectively disposed at both ends of the first part and extending outward in a direction perpendicular to the first part. This arrangement allows the first part of the liquid storage box 22 to be installed on the rear side of the housing 1, and the second and third parts to be installed on the sides of the housing 1 respectively, thus making full use of the space of the refrigeration equipment 100.

[0382] The width of the second and third sections is greater than that of the first section. The liquid storage area 222 is located in the first and second sections, and the liquid replenishment port 26 is located in the second section, which facilitates the placement of the liquid replenishment port 26 in a location with a larger width. The filtration area 221 and the liquid replenishment area 227 are located in the third section. The filtration area 221 and the liquid replenishment area 227 have a larger capacity, which can store more water, improving the filtration effect and eliminating the need for frequent liquid replenishment.

[0383] Referring to Figure 59, the top cover 224, the second enclosure plate 2211, and the end tube 231 can be configured as an integrally formed structure, and the box body 223 and the partition plate 229 can be configured as an integrally formed structure. The outer periphery of the top cover 224 is provided with a locking step that mates with the box body 223. A sealing groove is provided on the locking step, and a sealing ring 273 can be installed in the sealing groove to make the top cover 224 and the box body 223 seal and lock together.

[0384] The inlet baffle 41, the first enclosure plate 42, and the pressure balance pipe 226 in the liquid storage box 22 can be configured as an integrally formed structure. The first enclosure plate 42 is configured as a frame structure with four walls. In the horizontal direction, the outer edge of the inlet baffle 41 is larger than the outer edge of the first enclosure plate 42. The inner wall of the liquid storage box 22 is provided with an installation step, on which a positioning rod can be provided. The inlet baffle 41 is provided with a positioning hole corresponding to the positioning rod, and the inlet baffle 41 is engaged with the upper end of the installation step. A sealing ring 273 can be provided between the inlet baffle 41 and the installation step to seal and isolate the first chamber above the inlet baffle 41 and the second chamber below it, so as to adjust the water capacity in the electrolyte containing chamber 812.

[0385] In one embodiment, the controlled atmosphere device 2 is located outside the hyperoxia chamber. Oxygen produced by the controlled atmosphere device 2 is introduced into the hyperoxia chamber. If the controlled atmosphere device 2 produces hydrogen, the hydrogen is introduced into the hypooxia chamber. If the controlled atmosphere device 2 consumes oxygen, the oxygen-consuming component of the controlled atmosphere device 2 is located in the hypooxia chamber. In this way, the oxygen concentration in the hyperoxia and hypooxia chambers can be adjusted separately.

[0386] Example 3

[0387] In this embodiment, the structure of the electrolysis module 30 is described in detail based on embodiment 1.

[0388] Referring to Figures 38 to 49, the electrolysis module 30 includes an electrolysis box 811, an electrolyte containing cavity 812, and a gas collecting cavity 813. The electrolysis box 811 is located inside the housing 1. The gas collecting cavity 813 and the electrolyte containing cavity 812 are both located inside the electrolysis box 811. The electrode 814 is connected to the electrolysis box 811.

[0389] The electrolytic cell 811 includes the aforementioned housing 211.

[0390] An oxygen regulating pipe 821 is connected to the electrolysis box 811. The oxygen regulating pipe 821 has an oxygen outlet 8211 that communicates with the gas collecting chamber 813 in the electrolysis box 811 and an oxygen inlet 8212 that communicates with the outside of the electrolysis box 811.

[0391] In this embodiment, for ease of description, the liquid storage box 22 is divided into part of the electrolysis module 30.

[0392] The liquid storage box 22 is located on one side of the electrolysis box 811. The oxygen inlet 8212 is connected to the filtration zone 221 of the liquid storage box 22. The liquid storage box 2231 also has a filter outlet 8321 located in the filtration zone 221, which is the outlet of the exhaust pipe 24 located outside the liquid storage box 22. Electrolyzed oxygen, after being filtered by the filtration zone 221, is then transported to the high-oxygen chamber through the filter outlet 8321, thereby regulating the oxygen content within the chamber 601.

[0393] The refrigeration equipment 100 may tip over during transport, and therefore the electrolysis module 30 may also tip over. The electrolysis module 30 has at least one tipping direction, and at any tipping angle α in each direction, at least one of the oxygen outlet 8211 and the oxygen inlet 8212 is above the highest liquid level line in the electrolysis box 811. The highest liquid level line in the electrolysis box 811 refers to the level at which liquid can no longer be added to the electrolysis box 811.

[0394] A replenishment pipe 841 is connected between the liquid storage box 22 and the electrolysis box 811.

[0395] The replenishment pipe 841 has a replenishment outlet 8411 communicating with the interior of the storage box 22 and a liquid inlet 8412 communicating with the electrolyte containing cavity 812 inside the electrolysis box 811. At any pouring angle α in each pouring direction, the replenishment outlet 8411 or the liquid inlet 8412 is higher than the highest liquid level line inside the electrolysis box 811.

[0396] As an example, the tilting direction can include four directions: front, back, left, and right. The tilting angle α ranges from 0° to 90°. When α is 0°, the refrigeration device 100 is in a normal, untilted state. When α is 30° or 60°, the refrigeration device 100 is in a tilted state tilted in any tilting direction. When α is 90°, the refrigeration device 100 is in a horizontally tilted state.

[0397] With the refrigeration equipment 100 in an upright state, the oxygen outlet 8211 is connected to the upper edge of the electrolysis box 811, and the oxygen inlet 8212 and the filter outlet 8321 are connected to the upper edge of the liquid storage box 22. The liquid inlet 8412 is not higher than the lumen of the replenishment pipe 841, while the liquid replenishment outlet 8411 is higher than the liquid inlet 8412. Furthermore, the lowest liquid level line of the electrolyte container 812 is not lower than the upper edge of the electrode 814. The lowest liquid level line of the electrolyte container 812 refers to the point at which the electrolysis module 30 stops electrochemically reacting with the electrolyte when the liquid level in the electrolysis box 811 reaches this line. A warning structure, such as a liquid level sensor 750, can be installed in the electrolysis box 811. When the electrolyte level reaches the lowest liquid level line and the liquid storage box 22 stops replenishing liquid to the electrolysis box 811, a warning message can be issued and the electrolysis module 30 can be stopped.

[0398] As an example, any tilting state includes a first tilting state in which the refrigeration device 100 rotates 90° to the right, a second tilting state in which the refrigeration device 100 rotates 90° to the left, a third tilting state in which the refrigeration device 100 rotates 90° to the front, and a fourth tilting state in which the refrigeration device 100 rotates 90° to the rear.

[0399] In the first tilting state, the oxygen outlet 8211 and the liquid inlet 8412 are above the highest liquid level line a.

[0400] In the second pouring state, the oxygen inlet 8212 and the replenishment outlet 8411 are above the highest liquid level line b.

[0401] In the third pouring state, oxygen outlet 8211 and replenishment outlet 8411 are above the highest liquid level line c.

[0402] In the fourth pouring state, oxygen inlet 8212 and liquid inlet 8412 are above the highest liquid level line d.

[0403] It is easy to understand that during the process of switching the refrigeration equipment 100 from a non-tilted state to any tilted state, the refrigeration equipment 100 tilts gradually. During this tilting process, the oxygen outlet 8211 and oxygen inlet 8212 may change from both being above the highest liquid level line in the electrolysis box 811 to one of them being above the highest liquid level line in the electrolysis box 811. Similarly, the liquid inlet 8412 and liquid replenishment outlet 8411 may change from both being below the highest liquid level line in the electrolysis box 811 to one of them being above the highest liquid level line in the electrolysis box 811.

[0404] With this design, the electrolyte in the electrolysis box 811 will not leak into the compartment 601 during the handling and tilting of the refrigeration equipment 100, thus preventing contamination of the food in the compartment 601. Even if a small amount of electrolyte enters the oxygen regulating pipe 821 and the replenishment pipe 841 when the refrigeration equipment 100 is tilted, the electrolyte can still enter the liquid storage box 22, avoiding electrolyte leakage.

[0405] In an optional embodiment, the oxygen inlet 8212 of the oxygen regulating pipe 821 can be connected to other external filter structures to achieve oxygen filtration. When the oxygen regulating pipe 821 is connected to other external filter structures, a small amount of electrolyte entering the oxygen regulating pipe 821 can enter the external filter structure, which can also prevent the electrolyte from contaminating the oxygen regulating chamber 601.

[0406] As the electrode 814 undergoes an electrochemical reaction with the electrolyte, the electrolyte level drops, and the electrolyte can be replenished into the electrolyte box 811 using the storage box 22.

[0407] The highest liquid level of the electrolyte in the electrolyte container 812 is controlled by the liquid control component 27.

[0408] In other embodiments, depending on the size of the storage box 22, it may be configured to have a first part and a second part connected to each other, with the width of the first part being greater than the width of the second part, so that a groove is formed on one side of the second part. At least in the horizontal direction, the portion of the electrolysis box 811 located in the gas collecting chamber 813 is embedded in the groove. This makes the structure of the electrolysis module 30 more compact and saves the required installation space. Furthermore, the portion of the electrolysis box 811 located in the electrolyte containing chamber 812 is located on the horizontal side of the control chamber. Under the action of the replenishment pipe 841, when the liquid level in the electrolyte containing chamber 812 drops, the solution (e.g., water) in the control chamber is automatically replenished into the electrolyte containing chamber 812.

[0409] Thus, when the automatic replenishment module replenishes the electrolytic cell 811 through the liquid control chamber, the liquid storage chamber 220 can replenish the solution in the liquid control chamber in a timely and rapid manner, so that the solution in the liquid control chamber has a relatively stable liquid level, thereby ensuring that the replenishment process of the automatic replenishment module to the electrolytic cell 811 is stable and reliable.

[0410] The first end of the liquid control pipe 272 (i.e., the liquid replenishment line) is not higher than the highest liquid level line in the electrolysis box 811. In this way, the height of the highest liquid level line in the electrolysis box 811 can be controlled so that the electrolyte in the electrolysis box 811 will not leak in large quantities in any tilting direction of the refrigeration equipment 100.

[0411] The upper end of the air outlet channel is connected to the air filter outlet 8321, and the lower end of the air outlet channel is below the lowest water level in the filtration zone 221. The oxygen inlet 8212 of the oxygen regulating pipe 821 is connected to the upper part of the backflow buffer chamber 232. In this way, the gas entering the filtration zone 221 through the air inlet channel 2331 will inevitably be cleaned by the solution in the filtration zone 221, thus ensuring that the filtration zone 221 will not fail due to excessive consumption of solution in the liquid storage zone 222.

[0412] In one embodiment of this application, the electrolytic cell 811 includes a reaction chamber 101 and a liquid storage section 720. The reaction chamber 101 is located inside the housing 211.

[0413] In one embodiment, the reaction chamber 101 may contain an alkaline electrolyte, such as 0.1 to 8 mol / L NaOH or KOH, the concentration of which can be adjusted according to actual needs.

[0414] The liquid storage unit 72020 has a liquid storage chamber 7201201. The liquid storage chamber 7201 can hold and store electrolyte. When electrolyte is consumed in the reaction chamber 101, the liquid storage unit 720 can replenish the reaction chamber 101, avoiding the need for the user to directly and frequently replenish the reaction chamber 101.

[0415] Electrode assembly 730 is exposed inside reaction chamber 101. Both cathode 213 and anode 302 are in contact with the electrolyte inside reaction chamber 101, thus meeting the requirements of electrochemical reaction.

[0416] The replenishment pipe 841 can be selectively opened or closed, thereby selectively connecting the liquid storage chamber 7201 and the reaction chamber 101, so that the liquid storage section 720 replenishes the reaction chamber 101.

[0417] In one embodiment, the replenishment pipe 841 is always connected between the liquid storage chamber 7201 and the reaction chamber 101, thereby eliminating the need for additional valves, simplifying the structure of the controlled atmosphere device 2 and the replenishment operation, and reducing costs.

[0418] The replenishment pipe 841 connects the reaction chamber 101 and the storage chamber 7201, ensuring that the liquid levels in the reaction chamber 101 and the storage chamber 7201 are at the same horizontal level. In this embodiment, since the storage chamber 7201 and the reaction chamber 101 are in the same external environment (i.e., have the same atmospheric pressure), they form a communicating vessel. When the replenishment pipe 841 connects the reaction chamber 101 and the storage chamber 7201, utilizing the principle of communicating vessels, the liquid levels in the storage chamber 7201 and the reaction chamber 101 are always kept at the same level. Water in the storage chamber 7201 can automatically flow into the reaction chamber 101, allowing the reaction chamber 101 to automatically maintain the required working liquid level (e.g., ensuring that the cathode 213 and the anode 302 are both immersed below the electrolyte level), simplifying the replenishment process.

[0419] Furthermore, after the liquid storage chamber 7201 and the reaction chamber 101 are interconnected via a communicating vessel, the liquid storage chamber 7201 can automatically replenish the reaction chamber 101 without the need for an additional liquid pump, simplifying the structure of the controlled atmosphere device 2 and the operation method when replenishing the reaction chamber 101 with liquid from the liquid storage chamber 7201. In addition, the liquid level in the reaction chamber 101 can be determined by observing or detecting the liquid level in the liquid storage chamber 7201, enabling more liquid level detection methods.

[0420] After storing electrolyte in the storage chamber 7201, when the replenishment pipe 841 connects the reaction chamber 101 and the storage chamber 7201, pressure balance can be achieved between the reaction chamber 101 and the storage chamber 7201, so that the liquid level in the reaction chamber 101 and the liquid level in the storage chamber 7201 are at the same level. This allows the electrolyte stored in the storage chamber 7201 to be replenished to the reaction chamber 101, thus eliminating the need to frequently add electrolyte to the reaction chamber 101 and reducing the frequency of adding electrolyte to the reaction chamber 101.

[0421] Furthermore, when the replenishment pipe 841 connects the reaction chamber 101 and the storage chamber 7201, the liquid levels in both chambers remain at the same level. Therefore, when the liquid levels in both chambers are low and replenishment is needed, replenishment can be achieved simultaneously by adding liquid to either chamber. This provides a wider range of replenishment options to meet diverse replenishment needs.

[0422] Referring to Figures 61 to 67, the modified atmosphere device 2 also includes a mounting portion 710 for connecting the electrode assembly 730. In this embodiment, the electrode assembly 730 (i.e., the cathode 213 and the anode 302) is fixed to the mounting portion 710.

[0423] In one embodiment, the cathode 213 forms at least a portion of the outer wall of the mounting portion 710. In this embodiment, one side of the cathode 213 is exposed inside the reaction chamber 101, thereby coming into contact with the electrolyte inside the reaction chamber 101. The opposite side of the cathode 213 forms at least a portion of the outer wall of the mounting portion 710, thereby coming into contact with a specific gas outside the controlled atmosphere device 2 (e.g., inside the preservation space).

[0424] The modified atmosphere device 2 is placed directly inside the chamber 601, exposing the cathode 213 to the preservation space, thereby allowing it to come into contact with the specific gas within the preservation space. A waterproof and breathable membrane is provided on the cathode 213, allowing the specific gas outside the modified atmosphere device 2 to pass through the waterproof and breathable membrane and mix with the electrolyte, while preventing the electrolyte from passing through the waterproof and breathable membrane, thus avoiding electrolyte leakage from the reaction chamber 101.

[0425] In one embodiment, the cathode 213 and the mounting portion 710 together form a reaction chamber 101. In this embodiment, the cathode 213 is sealed to the mounting portion 710, thereby forming the reaction chamber 101 together with the mounting portion 710, preventing liquid leakage at the connection between the mounting portion 710 and the cathode 213.

[0426] In one embodiment, the mounting part 710 and the liquid storage part 720 are integrally formed, thus eliminating the installation step between the mounting part 710 and the liquid storage part 720, improving the integration level of the controlled atmosphere device 2, and saving the manufacturing cost of the controlled atmosphere device 2.

[0427] In one embodiment, the mounting part 710, the liquid storage part 720, and the liquid replenishment pipe 841 are all integrally formed, which improves the integration level of the controlled atmosphere device 2 and reduces the size of the controlled atmosphere device 2.

[0428] In another embodiment, the mounting section 710 and the liquid storage section 720 are separate units. Compared to the solution where the mounting section 710 and the liquid storage section 720 are integrally formed, the separate installation of the mounting section 710 and the liquid storage section 720 is beneficial for the maintenance and upkeep of the controlled atmosphere device 2.

[0429] The mounting part 710 and the liquid storage part 720 can be connected to the housing 1 or the door 70 as a whole. That is, after the mounting part 710 and the liquid storage part 720 are fixed together, they are installed as a whole on the housing 1 or the door 70. Alternatively, the mounting part 710 and the liquid storage part 720 can be installed sequentially. For example, the mounting part 710 can be fixed to the housing 1 or the door 70 first, and then the liquid storage part 720 can be fixed to the mounting part 710, the housing 1 or the door 70. This allows the liquid storage part 720 to be disassembled separately and replenished with liquid.

[0430] The mounting section 710 and the liquid storage section 720 can be connected to each other, abut against each other, or be spaced apart. That is, the separate arrangement of the mounting section 710 and the liquid storage section 720 includes the case where there is a connection between the mounting section 710 and the liquid storage section 720, such as the mounting section 710 and the liquid storage section 720 being connected to each other; it also includes the case where there is no connection between the mounting section 710 and the liquid storage section 720, such as the mounting section abutting against each other or being spaced apart.

[0431] In one embodiment, the mounting portion 710 and the liquid storage portion 720 are interconnected. The mounting portion 710 and the liquid storage portion 720 can be detachably connected, for example, by a snap-fit ​​connection, thereby facilitating the maintenance and preservation of the controlled atmosphere device 2. Alternatively, the mounting portion 710 and the liquid storage portion 720 can be non-detachably connected, for example, by welding, thereby increasing the connection strength between the mounting portion 710 and the liquid storage portion 720.

[0432] In one embodiment, the mounting portion 710 and the liquid storage portion 720 are interconnected. The mounting portion 710 and the liquid storage portion 720 can be detachably connected, for example, by a snap-fit ​​connection, thereby facilitating the maintenance and preservation of the controlled atmosphere device 2. Alternatively, the mounting portion 710 and the liquid storage portion 720 can be non-detachably connected, for example, by welding, thereby increasing the connection strength between the mounting portion 710 and the liquid storage portion 720.

[0433] In one embodiment, the mounting part 710 and the liquid storage part 720 abut against each other. The mounting part 710 and the liquid storage part 720 can be connected to the housing 1 or the door 70 respectively, or the mounting part 710 and the liquid storage part 720 can be connected to each other by a connector, so that there is no gap 1300 between them after installation, thereby reducing the space occupied by the controlled atmosphere device 2.

[0434] In one embodiment, the mounting part 710 and the liquid storage part 720 are spaced apart. The mounting part 710 and the liquid storage part 720 can be connected to the housing 1 or the door 70 respectively, and there is a gap 1300 between them after installation. Thus, the mounting part 710 and the liquid storage part 720 can be installed at different positions in the refrigeration equipment 100, meeting more installation needs and making reasonable use of the space of the refrigeration equipment 100.

[0435] For example, the mounting part 710 and the liquid storage part 720 are respectively installed in different compartments 601 of the housing 1 (or door 70); or, the mounting part 710 and the liquid storage part 720 are respectively installed in the compartment 601 and the foaming layer of the housing 1; or, the mounting part 710 is installed in the housing 1 and the liquid storage part 720 is installed in the door 70 (e.g., the bottle holder or door-in-door of the door 70), so that the user can directly perform liquid replenishment operation on the door 70.

[0436] The controlled atmosphere device 2 also includes a liquid level sensor 750 exposed within the liquid storage chamber 7201. The liquid level sensor 750 can detect the liquid level within the liquid storage chamber 7201. Since the liquid level in the liquid storage chamber 7201 is the same as the liquid level in the reaction chamber 101 when the liquid storage chamber 7201 is connected to the reaction chamber 101, the liquid level measured by the liquid level sensor 750 is also the liquid level in the reaction chamber 101, thus satisfying the requirement for detecting the liquid level in the reaction chamber 101. This saves space in the reaction chamber 101, thereby reducing the volume of the mounting portion 710, avoiding interference with specific gases (such as oxygen) and negative electrons generated by the electrochemical reaction, and facilitating the transfer of negative electrons between the two electrodes 814.

[0437] Of course, the liquid level sensor 750 can also be installed inside the reaction chamber 101, that is, exposed inside the reaction chamber 101, for direct detection of the liquid level inside the reaction chamber 101.

[0438] For example, the level sensor 750 is connected to the mounting portion 710 and / or the liquid storage portion 720. When the mounting portion 710 and the liquid storage portion 720 are separate units, the level sensor 750 can be installed by connecting it to the liquid storage portion 720. When the mounting portion 710 and the liquid storage portion 720 are integrally formed, the level sensor 750 can be connected to the mounting portion 710 and / or the liquid storage portion 720 as needed, as long as the level sensor 750 is exposed inside the liquid storage chamber 7201.

[0439] In one embodiment, both the cathode 213 and the anode 302 extend in a vertical direction. This saves on the dimensions of the mounting portion 710 in the horizontal direction.

[0440] In other embodiments, the cathode 213 and anode 302 may also be arranged at a certain angle to the vertical direction, thereby increasing the contact area between the two electrodes 814 and the electrolyte at the same vertical height.

[0441] In one embodiment, the cathode 213 and the anode 302 are arranged horizontally. By arranging the cathode 213 and the anode 302 opposite each other in the horizontal direction, the vertical dimensions of the mounting portion 710 can be saved. Furthermore, the mounting portion 710 has a flat structure, which facilitates the installation of the mounting portion 710 on the housing 1 or the door 70, thus saving storage space in the refrigeration equipment 100.

[0442] The mounting section 710 has an outlet 102 exposing the reaction chamber 101 and a liquid inlet 103 connected to the reaction chamber 101. A specific gas that increases through the electrochemical reaction within the reaction chamber 101 can be discharged to the outside of the controlled atmosphere device 2 through the outlet 102, for example, into the chamber 601. That is, the solution in the replenishment pipe 841 can flow into the reaction chamber 101 through the liquid inlet 103.

[0443] The liquid storage section 720 has a replenishment inlet that exposes the liquid storage chamber 7201 and a drain outlet connected to the liquid storage chamber 7201. The liquid storage chamber 7201 is exposed to the outside of the controlled atmosphere device 2 through the replenishment inlet, and the liquid storage chamber 7201 can be replenished through the replenishment inlet. The solution in the liquid storage chamber 7201 can flow out through the drain outlet (i.e., flow to the replenishment pipe 841) and flow to the reaction chamber 101.

[0444] When the replenishment pipe 841 connects the reaction chamber 101 and the storage chamber 7201, the reaction chamber 101 and the storage chamber 7201 can be exposed to the same atmospheric pressure through the air outlet 102 and the replenishment inlet, respectively. This makes the pressure in the reaction chamber 101 and the storage chamber 7201 the same, thus forming a communicating vessel between the reaction chamber 101 and the storage chamber 7201, enabling the storage chamber 7201 to automatically replenish the reaction chamber 101 and keep the liquid levels of the two chambers level.

[0445] The gas outlet 102 is located at the top of the reaction chamber 101, which allows the reaction chamber 101 to store more solution and facilitates the discharge of specific gases.

[0446] The injection port 103 is connected to the replenishment pipe 841 and located at the bottom of the mounting part 710. In this embodiment, the injection port 103 connects the reaction chamber 101 and the replenishment pipe 841, that is, the replenishment pipe 841 is connected to the mounting part 710. The injection port 103 is connected to the bottom of the reaction chamber 101, which facilitates the reaction chamber 101 to receive more solution from the storage chamber 7201.

[0447] The drain outlet is connected to the replenishment pipe 841, meaning the drain outlet connects the storage chamber 7201 and the replenishment pipe 841. The drain outlet is located at the bottom of the storage chamber 7201, which facilitates emptying the storage chamber 7201 and thus delivering more solution to the reaction chamber 101.

[0448] The controlled atmosphere device 2 also includes a valve installed on the replenishment pipe 841. The valve can selectively connect the reaction chamber 101 and the storage chamber 7201, or disconnect the connection between the reaction chamber 101 and the storage chamber 7201. This allows the mounting section 710 and the storage section 720 to be positioned at different horizontal heights. That is, when the valve is closed, the liquid level in the storage chamber 7201 differs from the liquid level in the reaction chamber 101. For example, when the valve is closed, the liquid level in the storage chamber 7201 is higher than the liquid level in the reaction chamber 101. This allows the storage chamber 7201 to store more solution for use in the reaction chamber 101. This method only requires opening the storage chamber 7201 when the liquid level in the reaction chamber 101 is low. Furthermore, by setting valves, the mounting part 710 or the liquid storage part 720 can be disassembled and replenished separately. For example, the liquid storage part 720 can be set on the door 70 and the mounting part 710 can be set on the box 1. By disassembling the liquid storage part 720 separately, the reaction chamber 101 can be replenished.

[0449] In one embodiment, the replenishment pipe 841 is configured as a flexible hose. This allows the modified atmosphere device 2 to be adapted to more installation scenarios. For example, the mounting part 710 is provided on the housing 1, and the liquid storage part 720 is provided on the door 70, and the replenishment pipe 841 (i.e., flexible hose) connecting the mounting part 710 and the liquid storage part 720 can run from the hinge box.

[0450] The replenishment pipe 841 is sealed and connected to the mounting section 710 and the liquid storage section 720. For example, the replenishment pipe 841 is connected to the mounting section 710 and the liquid storage section 720 through a pipe joint to prevent solution leakage.

[0451] The mounting portion 710 includes a bottom wall 105 and a side wall 106 surrounding the bottom wall 105, and a mounting opening 104 is provided on the bottom wall 105 and / or the side wall 106.

[0452] In one embodiment, the cathode 213 extends in a vertical direction, and the mounting opening 104 is provided on the side wall 106, so that the cathode 213 and the mounting part 710 enclose to form a reaction chamber 101.

[0453] In other embodiments, when the cathode 213 extends in the horizontal direction, the mounting opening 104 can also be provided on the bottom wall 105 (as shown in FIG. 67), as long as it can be enclosed with the mounting part 710 to form the reaction chamber 101.

[0454] The waterproof and breathable membrane installed on the cathode 213 allows oxygen in the chamber 601 to pass through and undergo a reduction reaction at the cathode 213, while the solution in the reaction chamber 101 cannot pass through the waterproof and breathable membrane.

[0455] The controlled atmosphere device 2 can also employ other types of electrochemical reactions and treat 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., to adapt to different application scenarios.

[0456] In another embodiment, both the cathode 213 and the anode 302 extend horizontally, which saves the volume of the mounting portion 710 in the vertical direction. The cathode 213 and the anode 302 are placed parallel to the horizontal direction, which saves the vertical dimension of the mounting portion 710.

[0457] Of course, the cathode 213 and anode 302 can also be set at a certain angle to the horizontal direction, thereby increasing the contact area between the two electrodes 814 and the electrolyte under the same horizontal width.

[0458] In one embodiment, the cathode 213 and the anode 302 are arranged vertically. By arranging the cathode 213 and the anode 302 opposite each other in the vertical direction, the horizontal dimensions of the mounting portion 710 can be saved. Furthermore, the mounting portion 710 has a flat structure, which facilitates the installation of the mounting portion 710 on the housing 1 or the door 70, thus saving storage space in the refrigeration equipment 100.

[0459] The anode 302 is located above the cathode 213. A vent 3021 is provided on the anode 302. The vent 3021 extends vertically through the anode 302. This allows bubbles generated by the anode 302 to escape upwards through the vent 3021, resulting in a short bubble escape path and preventing the bubbles from covering the surface of the anode 302. This leads to high working efficiency of the anode 302 and, consequently, improved overall working efficiency.

[0460] In one embodiment, a plurality of vent holes 3021 are uniformly arranged on the anode 302, allowing bubbles generated on the anode 302 to pass through the anode 302 uniformly and rapidly. Furthermore, both the cathode 213 and the anode 302 are horizontally positioned. In this configuration, the current direction of the cathode 213 and the anode 302 is perpendicular to the electrolyte surface. Negative electrons move along the shortest path, allowing continuously generated bubbles to escape rapidly, reducing current obstruction and improving the efficiency of the electrochemical reaction. Simultaneously, this structural design ensures that the specific gas generated by the anode 302 moves directly vertically upwards and exits the liquid surface, with minimal accumulation. The area where the specific gas exits is outside the current flow area, making the current obstruction negligible. In addition, it reduces the number of bubbles covering the surface of the anode 302, ensuring sufficient contact between the anode 302 surface and the electrolyte. Moreover, negative electrons can also pass through the vent holes 3021 and contact the side of the anode 302 opposite to the cathode 213 to react, increasing the contact area for the reaction and thus improving the efficiency of the electrochemical reaction.

[0461] Referring to Figure 68, one embodiment of this application also provides a control method for a refrigeration device 100, the control method including the following steps:

[0462] Step S1: Obtain the operating current I0 of the electrode group 730 at preset time intervals. In this embodiment, after the electrode group 730 is powered by the power supply, the operating current I0 of the electrode group 730 can be obtained through the current detection device, that is, the real-time operating current value of the electrode group 730 can be obtained.

[0463] Step S2: Determine the liquid level H0 in the reaction chamber 101 based on the operating current I0 of the electrode assembly 730. In this embodiment, the operating current I0 of the electrode assembly 730 is affected by the liquid level H0 in the reaction chamber 101. For example, when the liquid level H0 in the reaction chamber 101 decreases, the operating current I0 of the electrode assembly 730 will also decrease accordingly. Based on the magnitude of the operating current I0 of the electrode assembly 730, the liquid level H0 in the reaction chamber 101 can be determined directly or indirectly. For example, in direct determination, the liquid level H0 in the reaction chamber 101 can be determined based on the fact that each operating current I0 corresponds to a liquid level H0.

[0464] Step S3: When the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, a liquid replenishment signal is issued. In this embodiment, the first preset liquid level H1 can be a low liquid level, for example, when the liquid surface in the reaction chamber 101 just submerges the cathode 213 and the anode 302. If the liquid level in the reaction chamber 101 is lower than or equal to the first preset liquid level H1, it will affect the efficiency of the electrochemical reaction; at this time, a liquid replenishment signal is issued, for example, by sending an instruction to the display device of the refrigeration device 100, prompting the user to replenish the liquid in the reaction chamber 101.

[0465] Alternatively, if the liquid level in the reaction chamber 101 is lower than or equal to the first preset liquid level H1, the atmosphere control device 2 is stopped, that is, the power supply to the electrode group 730 is stopped.

[0466] If the liquid level in reaction chamber 101 is higher than the first preset liquid level H1, the controlled atmosphere device 2 continues to operate.

[0467] By acquiring the operating current of the electrode assembly 730, and utilizing the fact that the operating current corresponds to different liquid levels, it is possible to determine whether the actual liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, thus avoiding the liquid level in the reaction chamber 101 being too low and affecting the efficiency of the electrochemical reaction.

[0468] In one embodiment, in step S2, when the voltage applied to the electrode assembly 730 is a constant voltage, based on the fact that the operating current I0 of the electrode assembly 730 is not higher than the preset operating current I1, it is determined that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1. In this embodiment, the voltage applied to the electrode assembly 730 is a constant voltage, that is, the operating voltage of the electrode assembly 730 is controlled to remain unchanged. Under the same conditions (for example, the electrolyte temperature in the reaction chamber 101 is the same), the change in operating current I0 is proportional to the change in liquid level H0 in the reaction chamber 101, that is, when the liquid level H0 in the reaction chamber 101 decreases, the operating current I0 decreases accordingly.

[0469] Therefore, it is not necessary to install a liquid level sensor 750 in the reaction chamber 101 to determine that the reaction chamber 101 is at the lowest liquid level (i.e., at the first preset liquid level H1), which saves the internal space of the reaction chamber 101, reduces the volume of the controlled atmosphere device 2, avoids the influence of low liquid level on the oxygen and negative electrons generated by the electrochemical reaction, and is also conducive to the transfer of negative electrons between the two electrodes 814.

[0470] Under the same conditions, by keeping the operating voltage U0 of the control electrode group 730 constant, the change in liquid level H0 can be directly determined based on the change in operating current I0, thereby determining whether the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1. It should be noted that "under the same conditions" means keeping other factors affecting the operating current I0 (such as solution temperature) constant.

[0471] Furthermore, since the operating voltage U0 of the electrode assembly 730 remains constant, the solution resistance R0 (i.e., the ratio of operating voltage U0 to operating current I0) in the reaction chamber 101 changes linearly with the operating current I0. Therefore, only the operating current I0 needs to be determined to identify the corresponding liquid level H0, without needing to calculate and compare the solution resistance R0, thus simplifying the control logic.

[0472] In one embodiment, when the voltage applied to the electrode group 730 is a variable voltage in step S2, the operating voltage U0 of the electrode group 730 corresponding to the operating current I0 of the electrode group 730 is obtained. Based on the fact that the solution resistance value R0 in the reaction chamber 101 is not less than the preset solution resistance value R1, it is determined that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, where R0 = U0 / I0.

[0473] In this embodiment, after the electrode group 730 is powered by the power supply, the operating voltage U0 of the electrode group 730 can be obtained through the voltage detection device, that is, the real-time operating voltage value of the electrode group 730 can be obtained.

[0474] As shown in Figure 69, the voltage applied to the electrode assembly 730 is variable, causing the change between the operating voltage U0 and the operating current I0 to be non-linear. Therefore, under the same conditions, by calculating the solution resistance value R0 in the reaction chamber 101 (i.e., the ratio of the operating voltage U0 to the operating current I0), and judging the liquid level H0 in the reaction chamber 101 based on the change in the solution resistance value R0 (i.e., indirectly judging the liquid level H0 in the reaction chamber 101 based on the operating current I0), it is possible to accurately determine whether the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1 (i.e., judging whether the solution resistance value R0 is not lower than the preset solution resistance value R1), which is applicable to the case where the electrode assembly 730 uses a variable voltage.

[0475] Referring to Figure 10, the solid line and the double-dotted line in the figure are the relationship curves between the operating voltage and the operating current of the electrode assembly 730. Among them, the solid line represents the liquid level in the reaction chamber 101 being the first preset liquid level H1, and the double-dotted line represents the liquid level in the reaction chamber 101 being lower than the first preset liquid level H1.

[0476] In one embodiment, step S2, based on the solution resistance value R0 in reaction chamber 101 not being less than a preset solution resistance value R1, specifically means:

[0477] When the operating current I0 of the electrode assembly 730 is not lower than the preset operating current I2, the operating voltage U0 of the electrode assembly 730 is compared to see if it is not lower than the preset operating voltage U1. In this embodiment, as shown in FIG10, when the operating current I0 of the electrode assembly 730 is found to be not lower than the preset operating current I2, for example, equal to the preset operating current I2, if the operating voltage U0 of the electrode assembly 730 is not lower than the preset operating voltage U1, it indicates that the liquid level in the reaction chamber 101 is lower than the first preset liquid level H1.

[0478] Alternatively, step S2, based on the solution resistance value R0 in reaction chamber 101 not being less than the preset solution resistance value R1, specifically means:

[0479] When the operating voltage U0 of the electrode assembly 730 is not lower than the preset operating voltage U2, the operating current I0 of the electrode assembly 730 is compared to see if it is not higher than the preset operating current I3. In this embodiment, as shown in FIG10, when the operating voltage U0 of the electrode assembly 730 is found to be not lower than the preset operating voltage U2, for example, equal to the preset operating voltage U2, if the operating current I0 of the electrode assembly 730 is not higher than the preset operating current I3, it indicates that the liquid level in the reaction chamber 101 is lower than the first preset liquid level H1.

[0480] In one embodiment, step S2, applying a variable voltage to the electrode assembly 730, specifically refers to:

[0481] The operating voltage of electrode assembly 730 gradually decreases as the operating time of electrode assembly 730 increases. In this embodiment, within the same operating cycle of the controlled atmosphere device 2, when electrode assembly 730 is first started, a higher operating voltage can be used to improve the efficiency of the electrochemical reaction; after operating for a certain period of time, reducing the operating voltage of electrode assembly 730 can save energy.

[0482] In one embodiment, step S2 involves selecting a corresponding preset solution resistance value R1 based on the cooling time of the refrigeration device 100 supplying cooling to the reaction chamber 101 or the solution temperature within the reaction chamber 101. In this embodiment, considering that the electrolyte temperature affects the solution's resistance value—for example, as the electrolyte temperature gradually increases, the solution's resistance value gradually decreases—selecting different preset solution resistance values ​​R1 can eliminate the influence of electrolyte temperature changes on the solution's resistance value, adapting to more complex application scenarios.

[0483] For example, after the cooling time (or the number of cooling cycles of the cooling device 100) exceeds a preset value, the atmosphere control device 2 is activated. Based on the fact that the solution resistance value R0 in the reaction chamber 101 is not less than a preset solution resistance value R1, it is determined that the liquid level H0 in the reaction chamber 101 is not higher than a first preset liquid level H1. The preset solution resistance value R1 is selected accordingly based on the cooling time (or the number of cooling cycles of the cooling device 100).

[0484] Alternatively, for example, the actual temperature of the electrolyte in the reaction chamber 101 is obtained, and a preset solution resistance value R1 is selected according to the actual temperature of the electrolyte. Thus, based on the fact that the solution resistance value R0 in the reaction chamber 101 is not less than the preset solution resistance value R1, it is determined that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1.

[0485] Step S3: When the operating current I0 of the electrode assembly 730 and / or the liquid level sensor 750 determine that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, a liquid replenishment signal is issued. In this embodiment, when the operating current I0 of the electrode assembly 730 determines that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, and / or the liquid level sensor 750 determines that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, a liquid replenishment signal is issued.

[0486] For example, when either the operating current I0 of the electrode group 730 or the liquid level sensor 750 determines that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, a liquid replenishment signal is issued, which can improve the sensitivity of low liquid level detection.

[0487] Alternatively, for example, when both the operating current I0 of the electrode assembly 730 and the liquid level sensor 750 determine that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, a liquid replenishment signal is then issued to improve the accuracy of low liquid level detection.

[0488] In one embodiment, the controlled atmosphere device 2 further includes a liquid level sensor 750 for detecting the liquid level in the reaction chamber 101. The controlled atmosphere device 2 also includes a storage chamber 7201. When the storage chamber 7201 is connected to the reaction chamber 101, the liquid level in the reaction chamber 101 and the liquid level in the storage chamber 7201 are at the same horizontal level. The liquid level sensor 750 is exposed inside either the reaction chamber 101 or the storage chamber 7201. In this embodiment, when the storage chamber 7201 is connected to the reaction chamber 101, the liquid level in the reaction chamber 101 is the same as the liquid level in the storage chamber 7201. Therefore, by detecting the liquid level in either the reaction chamber 101 or the storage chamber 7201 using the liquid level sensor 750, the actual liquid level in the reaction chamber 101 can be detected accordingly.

[0489] In one embodiment, the time t0 required for the liquid level H0 in the reaction chamber 101 to rise from a second preset liquid level H2 to a first preset liquid level H1 is obtained. If the time t0 is less than a preset time t1, the controlled atmosphere device 2 is stopped from operating, where H2 > H1. In this embodiment, the second preset liquid level H2 is preferably a high liquid level. When the liquid level H0 in the reaction chamber 101 is higher than or equal to the second preset liquid level H2, the replenishment of liquid into the reaction chamber 101 is stopped. By setting up a liquid level anomaly detection (e.g., leakage caused by damage to the mounting part 710), leakage in the reaction chamber 101 can be avoided. Furthermore, when a liquid level anomaly is detected, the controlled atmosphere device 2 is stopped from operating.

[0490] In some embodiments, based on the detection of the first preset liquid level H1 and the second preset liquid level H2 by the liquid level sensor 750, when the time required for the liquid level H0 in the reaction chamber 101 to drop from the high liquid level (i.e. the second preset liquid level H2) to the low liquid level (i.e. the first preset liquid level H1) is less than a set value, it is determined that there is an abnormal liquid level, thereby controlling the controlled atmosphere device 2 to stop operating.

[0491] Alternatively, in some other embodiments, the liquid level drop rate v0 in the reaction chamber 101 is obtained, and when the liquid level drop rate v0 is greater than a preset liquid level drop rate v1, the controlled atmosphere device 2 is stopped. In this embodiment, based on the fact that the liquid level sensor 750 can continuously provide real-time feedback on the liquid level, the liquid level H0 in the reaction chamber 101 is detected at preset intervals. When the liquid level drop rate v0 is greater than the preset liquid level drop rate v1, it is determined that there is an abnormal liquid level, thereby controlling the controlled atmosphere device 2 to stop operating.

[0492] In one embodiment, the refrigeration device 100 further includes a liquid supply tank for replenishing the controlled atmosphere device 2 and a liquid pump for delivering the solution in the liquid supply tank to the controlled atmosphere device 2. The liquid supply tank may contain water or electrolyte. The liquid pump may deliver the solution to the reaction chamber 101 and / or the storage chamber 7201.

[0493] Step S3: When it is determined that the liquid level H0 in the reaction chamber 101 is not higher than the first preset liquid level H1, start the liquid pump. When it is determined that the reaction chamber 101 is at a low liquid level, start the liquid pump to automatically replenish the liquid, so as to avoid the reaction chamber 101 (or the storage chamber 7201) from being unable to work properly due to insufficient liquid.

[0494] In one embodiment, the control method includes the following steps:

[0495] Step S4: After determining that the operating cycle of the controlled atmosphere device 2 has reached the preset number of cycles, start the liquid pump. In this embodiment, under the same conditions, the amount of water lost by the controlled atmosphere device 2 in each operating cycle is the same. Therefore, after the controlled atmosphere device 2 has been running for the same amount of time (e.g., the same number of operating cycles), the preset amount of water can be replenished by the liquid pump. For example, the liquid pump can run at a constant power for a preset time, simplifying the operation steps and avoiding liquid shortage in the reaction chamber 101.

[0496] The operating cycle of the controlled atmosphere device 2 includes: after the controlled atmosphere device 2 operates for a preset time (e.g., 30 minutes), an interval of a preset time (e.g., 3 hours) and / or waiting for at least one cooling device 100 cooling cycle.

[0497] In addition, a liquid level sensor 750 can be installed in the liquid supply tank. When the liquid level in the liquid supply tank is lower than the third preset liquid level H3, the user is reminded to add water to the liquid supply tank and the liquid pump is controlled to stop working to avoid the liquid pump running dry.

[0498] 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.

[0499] 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 controlled atmosphere device, characterized in that, include: A modified atmosphere module for preparing oxygen-modified gas and having a gas collection chamber; Liquid storage box; An oxygen regulating circuit connects the gas collecting chamber and the liquid storage box. The end tube of the oxygen regulating circuit is inserted below the liquid surface of the liquid storage box. The oxygen regulating circuit has a backflow buffer chamber.

2. The controlled atmosphere device according to claim 1, characterized in that, The liquid storage box has a filtration zone, and the end tube of the oxygen regulating circuit is inserted below the liquid level in the filtration zone.

3. The controlled atmosphere device according to claim 2, characterized in that, The effective depth of the end tube inserted below the liquid surface in the filtration zone is h, the liquid surface area of ​​the filtration zone is s, and the volume of the backflow buffer chamber is v > h × s.

4. The controlled atmosphere device according to claim 2, characterized in that, The end tube surrounds the backflow buffer cavity.

5. The controlled atmosphere device according to claim 4, characterized in that, It also includes an exhaust pipe located in the liquid storage box, with the air inlet of the exhaust pipe located below the liquid level in the filtration zone.

6. The controlled atmosphere device according to claim 5, characterized in that, The exhaust pipe has an exhaust channel, and the end pipe includes a first pipe wall and a second pipe wall disposed opposite to each other. The first pipe wall separates the exhaust channel from the backflow buffer chamber. The second pipe wall is located on the side of the first pipe wall away from the exhaust pipe. The depth to which the first pipe wall is inserted below the liquid surface of the filtration zone is less than the depth to which the second pipe wall is inserted below the liquid surface of the filtration zone. h is the depth to which the first pipe wall is inserted below the liquid surface of the filtration zone.

7. The controlled atmosphere device according to claim 6, characterized in that, The end tube also includes a third tube wall and a fourth tube wall, which are respectively connected to the first tube wall and the second tube wall. The first tube wall, the third tube wall and the fourth tube wall are inserted into the filtration zone to a depth of h below the liquid surface.

8. The controlled atmosphere device according to claim 6, characterized in that, The exhaust pipe also includes a limiting wall, which is located on the side of the first pipe wall away from the second pipe wall. The limiting wall and the first pipe wall form the exhaust channel, and the limiting wall is inserted into the filtration zone to a depth greater than h below the liquid surface.

9. The controlled atmosphere device according to claim 8, characterized in that, The exhaust pipe also includes a first connecting plate and a second connecting plate arranged opposite to each other. The first connecting plate and the second connecting plate are respectively connected to the limiting wall and the second pipe wall, and the first connecting plate and the second connecting plate are respectively located on opposite sides of the end pipe.

10. The controlled atmosphere device according to claim 2, characterized in that, The end tube is configured as a flared tube.

11. The controlled atmosphere device according to claim 10, characterized in that, The gas conditioning circuit includes a connecting pipe that connects the terminal pipe to the gas conditioning module. The flared pipe includes a first pipe section and a second pipe section. The second pipe section connects the first pipe section and the connecting pipe. The cross-sectional area of ​​the first pipe section is larger than that of the second pipe section.

12. The controlled atmosphere device according to claim 2, characterized in that, The liquid storage box also includes a liquid storage area and a liquid level limiting mechanism. The liquid storage area is connected to the modified atmosphere module and replenishes the modified atmosphere module with liquid. The liquid level limiting mechanism limits the liquid level height of the filtration area. When the liquid level in the filtration area exceeds a preset height, the solution in the filtration area that exceeds the preset height enters the liquid storage area.

13. The controlled atmosphere device according to claim 12, characterized in that, The liquid storage box includes a box body and a top cover. The liquid storage area and the filtration area are both located in the box body. The top cover closes the box body. The liquid level limiting mechanism is a partition disposed between the liquid storage area and the filtration area. A liquid replenishment channel is formed between the partition and the top cover. The liquid replenishment channel connects the liquid storage area and the filtration area.

14. The controlled atmosphere device according to claim 13, characterized in that, It also includes an exhaust pipe located in the liquid storage box, with the upper end of the partition plate being higher than the air inlet of the exhaust pipe.

15. The controlled atmosphere device according to claim 14, characterized in that, The exhaust pipe is located on the side of the end pipe away from the liquid storage area.

16. The controlled atmosphere device according to claim 1, characterized in that, The liquid storage box includes a water supply box and a filter box, and the end pipe of the oxygen regulating circuit is inserted below the liquid level of the filter box.

17. The controlled atmosphere device according to claim 16, characterized in that, The effective depth of the end tube inserted below the liquid surface of the filter box is h', the liquid surface area of ​​the filter box is s', and the volume of the backflow buffer chamber is v>h'×s'.

18. A controlled atmosphere device, comprising: The modified atmosphere module includes electrodes, an electrolyte containment chamber, and a gas collection chamber; The controlled atmosphere device is characterized in that it further includes: The liquid storage box includes a liquid storage area, a filtration area and a replenishment area that are interconnected. The replenishment area is connected to the electrolyte container cavity. The replenishment line H of the replenishment area is higher than the first bottom wall of the liquid storage box located in the filtration area. The replenishment line H is the minimum liquid level that the liquid needs to reach to flow from the filtration area to the replenishment area. The end pipe has one inlet end connected to the gas collection chamber, and one outlet end of the end pipe extends into the filtration zone and is lower than the replenishment line H of the replenishment zone. An exhaust pipe connects the filtration zone to the outside of the liquid storage box.

19. The controlled atmosphere device according to claim 18, characterized in that, The replenishment area is provided with a liquid control device, which includes a liquid inlet partition that divides the replenishment area into a first chamber and a second chamber. The liquid inlet partition is provided with a liquid inlet hole that connects the first chamber and the second chamber. The first chamber is connected to the electrolyte containing chamber through the second chamber.

20. A refrigeration device, characterized in that, Includes the controlled atmosphere device as described in any one of claims 1 to 19.

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