Refrigerator and control method therefor

Abstract

The present application provides a refrigerator and a control method therefor. The refrigerator comprises: a refrigerator body, two or more freshness-keeping compartments being provided in the refrigerator body; a gas treatment module, which is used for forming a freshness-keeping gas, and is provided with an air outlet for the freshness-keeping gas to flow out; and a gas distribution module, which is assembled on the gas treatment module, and forms an air adjustment and integration module with the gas treatment module, the gas distribution module comprising two or more gas distribution channels, two gas distribution channels being in parallel communication with the air outlet, and each gas distribution channel being in communication with a corresponding freshness-keeping compartment. In this way, reasonable distribution and accurate distribution of the freshness-keeping gas are facilitated, the complexity of a pipeline structure is greatly reduced, and mounting and layout of a freshness-keeping supply line of the freshness-keeping compartment are simple; in addition, it is possible to implement more diversified combinations of freshness-keeping compartments, greatly improving the freshness-keeping function of a refrigerator.

Description

Refrigerator and its control method

[0001] This application is based on and claims priority to Chinese patent applications No. 202422730820.8, No. 202411596068.0, No. 202411596172.X, No. 202411596172.X, and No. 202422723022.2, No. 202422723022.2, and the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of household appliance technology, and more specifically to a refrigerator and its control method. Background Technology

[0003] Modified atmosphere storage technology generally refers to the technology of extending the shelf life of food by adjusting the gas atmosphere (e.g., the proportion of gas components) of the enclosed space where the stored food is located. Its basic principle is to obtain a gas atmosphere with a different composition than air in a certain enclosed space through various adjustment methods, so as to inhibit the physiological and biochemical processes and microbial activities that cause the stored food (usually food ingredients) to spoil.

[0004] Those skilled in the art will know that air composition by volume percentage includes approximately 78% nitrogen, approximately 21% oxygen, approximately 0.939% rare gases, 0.031% carbon dioxide, and 0.03% other gases and impurities, such as ozone, nitric oxide, nitrogen dioxide, water vapor, etc.

[0005] In the field of modified atmosphere storage, preservative gases are gases composed of a single or multiple components that differ from air. When such gases are used for food storage, they can delay the spoilage or ripening of certain types of food.

[0006] To achieve modified atmosphere preservation, a common technology in refrigerators is to install a gas processing unit. This unit can process specific gas components, such as increasing or decreasing their content, to obtain a preservative gas.

[0007] However, research has found that refrigerators with modified atmosphere storage currently suffer from problems such as unreasonable supply of preservation gases, low efficiency, and complex piping.

[0008] Any prior art mentioned in the specification does not imply confirmation or suggestion that such prior art constitutes part of the general common knowledge in any jurisdiction, or that it can be reasonably expected that such prior art will be understood, regarded as relevant and / or combined with other prior art by a person skilled in the art. Summary of the Invention

[0009] To address the aforementioned technical problems, the purpose of this application is to provide a refrigerator and its control method.

[0010] To achieve the above objectives, one embodiment provides a refrigerator. The refrigerator includes:

[0011] The container has two or more preservation compartments inside;

[0012] A gas processing module for generating preservative gas, having an outlet for the preservative gas to flow out.

[0013] A gas distribution module is assembled into the gas processing module and forms a modified atmosphere integrated module with the gas processing module. The gas distribution module includes two or more gas distribution channels, two of which are connected in parallel to the gas outlet, and each of the gas distribution channels is connected to the corresponding preservation compartment.

[0014] As an optional embodiment, the gas distribution module includes a gas distribution box, and the gas distribution channel is at least partially formed in the gas distribution box or between the gas distribution box and the gas processing module.

[0015] As an optional embodiment, the two or more fresh-keeping compartments include a first fresh-keeping compartment and a second fresh-keeping compartment, and the two gas distribution channels include a first gas distribution channel and a second gas distribution channel arranged in parallel.

[0016] The first gas distribution channel is connected to the first fresh-keeping compartment;

[0017] The second gas distribution channel is connected to the second preservation compartment.

[0018] As an optional embodiment, the gas distribution module further includes a main gas distribution channel, wherein both the first gas distribution channel and the second gas distribution channel are connected to the gas processing module through the main gas distribution channel.

[0019] As an optional embodiment, the gas distribution module further includes a fan for driving the preservation gas from the gas processing module to the first gas distribution channel and the second gas distribution channel.

[0020] As an optional embodiment, the specific gas adjustment volume ratio of the first preservation chamber and the second preservation chamber is A:B, and the minimum cross-sectional area ratio of the first gas distribution channel and the second gas distribution channel is C:D.

[0021] Where A≥B, C≥D and C:D is between A:4B / 5 and A:6B / 5; or, A<B, C<D and C:D is between A:4B / 5 and A:6B / 5.

[0022] As an optional embodiment, the first gas distribution channel has a first gas distribution port formed on the gas-controlled integrated module, the first gas distribution port defining the minimum cross-section of the first gas distribution channel.

[0023] The second gas distribution channel has a second gas outlet formed on the gas control integration module, the second gas outlet defining the minimum cross-section of the second gas distribution channel.

[0024] As an optional embodiment, the gas distribution module further includes a gravity baffle disposed at the second gas distribution channel;

[0025] The fan is equipped with two or more speed settings with different speeds, and corresponding to different speed settings, the gravity baffle rotates to different angles under the drive of the airflow in the second air distribution channel.

[0026] As an optional embodiment, the fan is provided with a first speed v1, a second speed v2, and a third speed v3, where v1≤v01, v02≤v2, and v01<v3<v02.

[0027] When the fan speed does not exceed the first threshold v01, the gravity baffle cannot be driven by the airflow to rotate and completely blocks the second air distribution channel; when the fan speed reaches or exceeds the second threshold v02, the gravity baffle is driven by the airflow to rotate by an angle X and completely opens the second air distribution channel.

[0028] As an optional embodiment, the first gas distribution channel has a first gas distribution port formed on the modified atmosphere integration module, and the second gas distribution channel has a second gas distribution port formed on the modified atmosphere integration module.

[0029] The gravity baffle is disposed at the second air distribution port and is used to shield the second air distribution port; the free lower end of the gravity baffle rotates away from the second air distribution port under the drive of the airflow flowing out of the second air distribution port.

[0030] As an optional embodiment, the gas distribution module further includes an atmosphere damper disposed at the second gas distribution channel to open and close the second gas distribution channel.

[0031] As an optional embodiment, the refrigerator further includes:

[0032] Refrigerated compartment;

[0033] A refrigeration system, including a cooler disposed within the refrigeration chamber, the cooler being used to cool the air in the refrigeration chamber;

[0034] Air supply duct, which connects to the cooling chamber; and,

[0035] A refrigeration fan is used to drive the cold air in the refrigeration chamber to flow along the air supply duct to the outer periphery of the first preservation compartment and the outer periphery of the second preservation compartment.

[0036] As an optional embodiment, the refrigerator includes:

[0037] The first food storage container body, the interior of which encloses the first food storage compartment;

[0038] The second preservation box body encloses the second preservation chamber. The second preservation box body includes a box body and an air-barrier and moisture-permeable membrane. The box body body has a through window that runs through the inside and outside. The air-barrier and moisture-permeable membrane seals and covers the through window. The air-barrier and moisture-permeable membrane is configured to allow water vapor to pass through the second preservation chamber.

[0039] As an optional embodiment, the air supply duct has a first air outlet, a second air outlet, and a humidity regulating damper for opening and closing the second air outlet;

[0040] The air supply duct is connected to the outer periphery of the second fresh-keeping compartment through the first air supply port and the second air supply port in order to reduce the temperature inside the second fresh-keeping compartment.

[0041] In this case, compared to the first air outlet, the cold air flowing from the second air outlet flows toward the air-barrier and moisture-permeable membrane.

[0042] As an optional embodiment, the gas distribution module further includes a first fan and a second fan, wherein the first fan drives the preservative gas from the gas processing module into the first gas distribution channel, and the second fan drives the preservative gas from the gas processing module into the second gas distribution channel.

[0043] As an optional embodiment, the first fan is disposed in the first air distribution channel, or it is disposed in the main air distribution channel and its exhaust port is disposed at the intersection of the main air distribution channel and the first air distribution channel;

[0044] The second fan is installed in the second air distribution channel, or it is installed in the main air distribution channel and its exhaust port is located at the intersection of the main air distribution channel and the second air distribution channel.

[0045] As an optional embodiment, the first fan and the second fan are respectively configured to have adjustable speed.

[0046] As an optional embodiment, the gas distribution module further includes a first atmosphere damper and a second atmosphere damper, wherein the first atmosphere damper is disposed at the second gas distribution channel to open and close the second gas distribution channel, and the first atmosphere damper is disposed at the first gas distribution channel to open and close the second gas distribution channel.

[0047] As an optional embodiment, the first fresh-keeping compartment is located above the modified atmosphere integrated module, and the second fresh-keeping compartment is located to the side of the modified atmosphere integrated module;

[0048] The first and second gas distribution channels are arranged in vertical layers.

[0049] The first gas distribution channel has a first gas distribution port formed on the modified atmosphere integrated module, and the first gas distribution port is connected vertically to the first gas supply hole of the first fresh-keeping compartment.

[0050] The second gas distribution channel has a second gas distribution port formed on the modified atmosphere integrated module, and the second gas distribution port is connected to the second gas supply hole of the second preservation compartment.

[0051] As an optional embodiment, the top of the gas processing module is provided with several air guide plates, and the second gas distribution channel is formed between these air guide plates;

[0052] The gas distribution box includes:

[0053] The bottom cover, which is assembled on the gas processing module, has a horizontally placed partition plate, and the first gas distribution channel and the second gas distribution channel are distributed on the upper and lower sides of the partition plate.

[0054] The top cover assembled on the bottom cover has several air guide ribs at its bottom, and the first air distribution channel is formed between these air guide ribs.

[0055] As an optional embodiment, the gas distribution module further includes several return gas channels;

[0056] At least one of the preservation compartments is connected to the gas processing module via one of the gas return channels so that the gas inside the compartment can be returned to the gas processing module.

[0057] As an optional embodiment, the gas processing module includes:

[0058] A gas processing unit includes an anode and a cathode. The cathode is used to consume oxygen outside the gas processing unit through an electrochemical reaction to form a preservative gas in an oxygen-deficient state on the outside of the gas processing unit. The anode is used to generate oxygen inside the gas processing unit through an electrochemical reaction to form a preservative gas in an oxygen-rich state in the inner cavity.

[0059] The processing box surrounds the gas processing unit and has an outlet for the release of either oxygen-deficient or oxygen-enriched preservative gas.

[0060] To achieve the above objectives, one embodiment provides a refrigerator control method, the control method comprising the following steps:

[0061] S1, monitor whether both the first and second preservation chambers are closed. If so, control the fan and the gas processing module to turn on and start timing.

[0062] S2, within the target duration after timing, monitor whether the first and second preservation compartments are opened;

[0063] S3, If it is detected in step S2 that both the first and second preservation rooms are open, then control the gas processing module to close, keep the fan running, and return to step S1;

[0064] S4. If it is detected in step S2 that only one of the first and second fresh-keeping compartments is open, then control the gas processing module to continue running, shut down the fan, and return to step S1.

[0065] S5. If it is detected in step S2 that neither the first nor the second preservation room is open, the fan and the gas processing module shall be shut down after the target time is reached.

[0066] To achieve the above objectives, one embodiment provides a refrigerator control method, the control method comprising the following steps:

[0067] S1, monitor whether both the first and second preservation chambers are closed. If so, control the fan and the gas processing module to turn on and start timing.

[0068] S2, within the target duration after timing, monitor whether the first and second preservation compartments are opened;

[0069] S3, If it is detected in step S2 that both the first and second preservation rooms are open, then control the gas processing module to close, keep the fan running, and return to step S1;

[0070] S4. If it is detected in step S2 that only one of the first and second fresh-keeping compartments is open, then control the gas processing module to continue running, shut down the fan, and return to step S1.

[0071] S5. If it is detected in step S2 that neither the first nor the second preservation room is open, the fan and the gas processing module shall be shut down after the target time is reached.

[0072] To achieve the above objectives, one embodiment provides a refrigerator control method, the control method comprising the following steps:

[0073] S1, monitor whether both the first and second fresh-keeping compartments are closed;

[0074] If so, the gas processing module is turned on, the first fan runs at speed V1, the second fan runs at speed V2, and before the first and second preservation chambers reach the controlled atmosphere target, the first and second preservation chambers are continuously monitored to see if they are turned on, and then the process proceeds to step S2.

[0075] S2, if it is detected that the first and second fresh-keeping compartments are fully open, then control the gas handling module to shut down, the first fan runs at speed V1m, the second fan runs at speed V2m, and return to step S1; where V1n < V1, V2n < V2.

[0076] If only the first preservation chamber is open, then the gas handling module is turned on, the first fan is turned off, the second fan is run, and the process returns to step S1.

[0077] If only the second preservation chamber is open, then the gas handling module is turned on, the first fan runs, the second fan is turned off, and the process returns to step S1.

[0078] If both the first and second preservation rooms are closed, then once both the first and second preservation rooms have reached the controlled atmosphere target, the first fan, the second fan, and the gas processing module will all be shut down.

[0079] To achieve the above objectives, one embodiment provides a refrigerator. The refrigerator includes:

[0080] The container has a first fresh-keeping compartment and a second fresh-keeping compartment inside, and the specific gas adjustment volume ratio of the first fresh-keeping compartment and the second fresh-keeping compartment is A:B.

[0081] A gas processing module, used to generate a preservative gas with a specific gas content that can be adjusted;

[0082] A first gas distribution channel connects the gas processing module and the first fresh-keeping compartment, so that the fresh-keeping gas can flow from the gas processing module to the first fresh-keeping compartment.

[0083] The second gas distribution channel connects the gas processing module and the second fresh-keeping compartment, so that the fresh-keeping gas can flow from the gas processing module to the second fresh-keeping compartment. The first gas distribution channel and the second gas distribution channel are arranged in parallel, and the minimum cross-sectional area ratio of the first gas distribution channel to the second gas distribution channel is C:D.

[0084] Where A≥B, C≥D and C:D is between A:4B / 5 and A:6B / 5; or, A<B, C<D and C:D is between A:4B / 5 and A:6B / 5.

[0085] As an optional embodiment, the refrigerator further includes a fan for driving the preservation gas from the gas processing module to the first gas distribution channel and the second gas distribution channel.

[0086] As an optional embodiment, the refrigerator further includes a common passage that connects the gas handling module and the first gas distribution passage, as well as the gas handling module and the second gas distribution passage.

[0087] The fan is located within the public passageway.

[0088] As an optional embodiment, the refrigerator further includes a gas distribution box, wherein the first gas distribution channel and the second gas distribution channel are at least partially formed within the gas distribution box;

[0089] The gas distribution box has an inlet, which is connected to the gas processing module. The fan is located inside the gas distribution box with its intake port facing the inlet and its exhaust port facing the first gas distribution channel and the second gas distribution channel.

[0090] As an optional embodiment, the gas distribution box includes:

[0091] The first connector forms a first air outlet for the first air distribution channel and defines the minimum cross-section of the first air distribution channel.

[0092] The second connector forms a second air outlet for the second air distribution passage and defines the minimum cross-section of the second air distribution passage.

[0093] As an optional embodiment, the refrigerator further includes:

[0094] The first return gas channel connects the gas processing module and the first fresh-keeping compartment, so that gas can flow from the first fresh-keeping compartment to the gas processing module.

[0095] The second return gas channel connects the gas processing module and the second fresh-keeping compartment, allowing gas to flow from the second fresh-keeping compartment to the gas processing module; the first return gas channel and the second return gas channel are arranged in parallel, and the minimum cross-sectional area ratio of the first return gas channel to the second return gas channel is E:F.

[0096] Where A≥B, E≥F and E:F is between A:4B / 5 and A:6B / 5; or, A<B, E<F and E:F is between A:4B / 5 and A:6B / 5.

[0097] As an optional embodiment, the first return gas passage and the second return gas passage are at least partially formed within the gas distribution box;

[0098] The gas distribution box also includes:

[0099] The outlet is connected to the gas processing module.

[0100] The third connector forms the first return air port of the first return air channel and defines the minimum cross-section of the first return air channel.

[0101] The fourth connector forms a second return air port for the second return air passage and defines the minimum cross-section of the second return air passage.

[0102] As an optional embodiment, the gas processing module includes a processing box and a gas processing unit located within the processing box;

[0103] The gas processing unit is used to generate preservative gas;

[0104] The processing box has an outlet for the release of preservative gas and an inlet for the inflow of gas. The outlet is connected to the inlet, and the inlet is connected to the outlet.

[0105] As an optional embodiment, the gas distribution box is fixedly assembled on the top wall of the processing box.

[0106] As an optional embodiment, the first preservation compartment has a first air supply hole and a first air return hole, the first connector is plugged into the first air supply hole, and the third connector is plugged into the first air return hole.

[0107] As an optional embodiment, the refrigerator further includes:

[0108] A first door for opening and closing the first cold storage compartment and a second door for opening and closing the second cold storage compartment; and

[0109] The control system includes:

[0110] The first signal device is used to sense the opening and closing of the first door.

[0111] A second signal device is used to sense the opening and closing of the second door; and

[0112] The controller is electrically connected to the first signal device, the second signal device, the fan, and the gas processing module, and controls the operation of the fan and the gas processing module according to the signals sensed by the first signal device and the second signal device.

[0113] As an optional embodiment, the controller is configured to,

[0114] When it is determined that both the first door and the second door are closed, the fan and the gas handling module are turned on and the timer starts until the target running time is reached;

[0115] Within the target duration:

[0116] If it is determined that both the first door and the second door are open, the gas processing module is shut down while the fan continues to run.

[0117] If it is determined that only one of the first door and the second door is open, the gas processing module is kept running while the fan is turned off.

[0118] As an optional embodiment, the controller is also configured to,

[0119] Within the target duration:

[0120] If it is determined that both the first door and the second door are open, the gas processing module is shut down and the fan continues to run with an increased speed.

[0121] As an optional embodiment, the controller is also configured to,

[0122] Within the target duration:

[0123] If it is determined that the first door and the second door are always closed, then the gas processing module and the fan are controlled to be turned off after the target duration, and after a preset interval, the fan and the gas processing module are controlled to be turned on and the timer starts until the second target duration is reached;

[0124] Wherein, the second target duration is less than the target duration.

[0125] To achieve the above objectives, one embodiment provides a control method for the refrigerator. The control method includes the following steps:

[0126] S1, monitor whether both the first and second preservation chambers are closed. If so, control the fan and the gas processing module to turn on and start timing.

[0127] S2, within the target duration after timing, monitor whether the first and second preservation compartments are opened;

[0128] S3, If it is detected in step S2 that both the first and second preservation rooms are open, then control the gas processing module to close, keep the fan running, and return to step S1;

[0129] S4. If, in step S2, it is detected that only one of the first and second preservation chambers is open, then the gas processing module is kept running, the fan is turned off, and the process returns to step S1.

[0130] As an optional embodiment, the control method further includes the following steps:

[0131] S5, If it is detected in step S2 that neither the first nor the second fresh-keeping room is open, the fan and the gas processing module shall be shut down after the target time is reached, and the timer shall be started to proceed to S6.

[0132] S6, within a preset interval after timing, monitor whether the first and second fresh-keeping compartments are open;

[0133] S7. If it is detected in step S6 that neither the first nor the second fresh-keeping room is open, then proceed to step S8 when the preset interval time is reached.

[0134] S8, control the fan and the gas processing module to start again, and after running for a second target time, shut down the fan and the gas processing module, and return to step S1 after a second preset interval.

[0135] Wherein, the second target duration is less than the target duration, and the second preset interval duration is not less than the preset interval duration.

[0136] As an optional embodiment, the control method further includes the following steps:

[0137] S9. If it is detected in step S6 that both the first and second preservation rooms are open, then control the gas processing module to close, the fan to start, and return to step S1.

[0138] S10, if it is detected in step S6 that only one of the first and second fresh-keeping rooms is open, then restart the timing and control the gas processing module to open and the fan to close. After it is detected that both the first and second fresh-keeping rooms are closed, control the gas processing module to keep running and the fan to open until it runs continuously for a third target duration, then shut down the fan and the gas processing module, and return to step S1 after a second preset interval.

[0139] The third target duration is between the second target duration and the target duration.

[0140] As an optional embodiment, the rotational speed of the fan in steps S3 and S9 is greater than the rotational speed of the fan in steps S1, S8 and S10.

[0141] Compared with the prior art, the beneficial effects of one embodiment of this application are as follows: by setting up a gas distribution module and assembling the gas distribution module into a gas processing module to form a modified atmosphere integrated module, and the gas distribution module having multiple parallel gas distribution channels, it is possible to supply the same type of preservation gas to each preservation compartment. In this way, the airflow supply of multiple preservation compartments is realized based on the gas distribution module, which is conducive to the rational and precise distribution of preservation gas, and greatly reduces the complexity of the pipeline structure. The installation and layout of the preservation supply pipeline of the preservation compartment is simple. In addition, it can realize a more diversified combination of preservation compartments, which greatly improves the preservation function of the refrigerator.

[0142] To achieve the above objectives, this application provides a refrigerator, including a cabinet, a first fresh-keeping compartment and a second fresh-keeping compartment located within the cabinet, and a controlled atmosphere integrated module located between the first fresh-keeping compartment and the second fresh-keeping compartment;

[0143] The controlled atmosphere integrated module includes an oxygen-regulating chamber formed therein and a gas processing unit located within the oxygen-regulating chamber. The first and second fresh-keeping chambers are both connected to the oxygen-regulating chamber. The gas processing unit is used to transfer oxygen from the oxygen-regulating chamber to the outside of the oxygen-regulating chamber to reduce the gas pressure inside the oxygen-regulating chamber, thereby causing air from the first and second fresh-keeping chambers to flow into the oxygen-regulating chamber.

[0144] As a further improvement of this application, the refrigerator includes a first fresh-keeping box body defining the first fresh-keeping compartment and a second fresh-keeping box body defining the second fresh-keeping compartment, and the modified atmosphere integrated module includes a processing box defining the oxygen-regulating chamber;

[0145] A first connector is formed on the first preservation box body, a second connector is formed on the second preservation box body, and a third connector that mates with the first connector and a fourth connector that mates with the second connector are formed on the processing box. The first preservation chamber and the oxygen-regulating chamber are connected through the first connector and the third connector, and the second preservation chamber and the oxygen-regulating chamber are connected through the second connector and the fourth connector.

[0146] As a further improvement of this application, the first connector includes a first mating surface and a first channel that connects to the first preservation chamber and extends through the first mating surface. The third connector includes a third mating surface and a third channel that connects to the oxygenation chamber and extends through the third mating surface. The first mating surface and the third mating surface are oriented in opposite directions and are mated together. The first channel connects to the third channel.

[0147] As a further improvement to this application, the refrigerator also includes a first fastener connecting the first connector and the third connector.

[0148] As a further improvement of this application, a first sealing gasket is provided between the first bonding surface and the third bonding surface, and a first through hole is provided on the first sealing gasket to enable communication between the first channel and the third channel.

[0149] As a further improvement of this application, the length of the modified atmosphere integrated module is greater than the width of the modified atmosphere integrated module, the first preservation chamber and the second preservation chamber are respectively located on both sides of the width direction of the modified atmosphere integrated module, and the third connector and the fourth connector are respectively located on both sides of the width direction of the modified atmosphere integrated module.

[0150] As a further improvement of this application, the gas processing unit includes a frame body, a first cathode and a second cathode respectively connected to opposite sides of the frame body, the frame body, the first cathode and the second cathode together define an inner cavity for storing electrolyte, and the gas processing unit also includes an anode located in the inner cavity and between the first cathode and the second cathode.

[0151] The first cathode is disposed facing the first preservation chamber, the second cathode is disposed facing the second preservation chamber, and the inner cavity is connected to the outside of the modified atmosphere integrated module.

[0152] As a further improvement of this application, the refrigerator also includes a third preservation compartment communicating with the inner cavity.

[0153] As a further improvement of this application, the modified atmosphere integrated module also includes a liquid level sensor for detecting the liquid level of the electrolyte in the inner cavity.

[0154] As a further improvement of this application, the refrigerator includes compartments formed within the refrigerator body, wherein the first fresh-keeping compartment, the second fresh-keeping compartment, and the controlled atmosphere integrated module are all located within the compartments.

[0155] The beneficial effects of one embodiment of this application include: no fan is required in the controlled atmosphere integrated module; under the action of the gas processing unit, the oxygen content and air pressure in the oxygen conditioning chamber will be reduced, so that the air with high oxygen content in the first and second preservation chambers will diffuse into the oxygen conditioning chamber with low oxygen content. In this way, the oxygen content in the first and second preservation chambers can be reduced, and the air will not move violently in the first and second preservation chambers, which is beneficial to the preservation of food.

[0156] To achieve the above-mentioned objective, one embodiment of this application provides a modified atmosphere integrated module, including a processing box, a gas processing unit disposed within the processing box, and at least two air paths formed between the processing box and the gas processing unit. The processing box is provided with an air inlet and a first air outlet. The at least two air paths are connected in parallel between the air inlet and the first air outlet. After the airflow enters the processing box from the air inlet, it is diverted to the at least two air paths and then converges and flows out from the first air outlet.

[0157] As a further improvement of one embodiment of this application, the air inlet and the first air outlet are located on the same side of the processing box, and a baffle is provided inward on the side of the processing box where the air inlet and the first air outlet are located. The baffle cooperates with the gas processing unit to divide the air path in the processing box into a U-shaped air path.

[0158] As a further improvement of one embodiment of this application, it also includes air guide ribs, which are disposed between the processing box and the gas processing unit to divide the U-shaped air path into at least two paths.

[0159] As a further improvement of one embodiment of this application, the air guide rib is disposed in the processing box along the thickness direction of the gas processing unit, and the air guide rib is located on the opposite side of the side where the air inlet and the first air outlet are provided.

[0160] As a further improvement of one embodiment of this application, a boss is provided at the bottom of the gas processing unit corresponding to the position of the air guide rib, and the gas processing unit is mounted on the air guide rib through the boss.

[0161] As a further improvement of one embodiment of this application, the gas processing unit includes an electrode and a frame fixed around the electrode. An air passage is formed between the electrode and the inner wall of the processing box. In the thickness direction of the electrode, the frame protrudes from the electrode.

[0162] As a further improvement of one embodiment of this application, the processing box is also provided with an air guide plate, which is located near the air inlet and tilted toward the gas processing unit.

[0163] As a further improvement of one embodiment of this application, the air inlet and the first air outlet are located in the middle of the gas processing unit along its length.

[0164] As a further improvement of one embodiment of this application, it also includes an air distribution module, which includes an air distribution box and a fan disposed in the air distribution box. The air distribution box is provided with a return air channel communicating with the air inlet and a main air distribution channel communicating with the first air outlet. The return air channel and the main air distribution channel are isolated from each other.

[0165] As a further improvement of one embodiment of this application, the air inlet and the first air outlet are respectively disposed on two opposite sides of the processing box.

[0166] One embodiment of this application also provides a refrigeration device, including a housing having a refrigeration chamber and a controlled atmosphere integrated module disposed in the housing and communicating with the refrigeration chamber, wherein the controlled atmosphere integrated module is the controlled atmosphere integrated module as described above.

[0167] The beneficial effects of this application include: in the modified atmosphere integrated module, the airflow entering the processing box is divided into at least two streams by the air guide ribs, so that the airflow can pass through the gas processing unit evenly, thereby fully contacting the electrodes on the gas processing unit, making the electrodes evenly contact the air, with uniform lifespan, and improving the reaction efficiency of the electrodes.

[0168] 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

[0169] Figure 1 is a perspective structural diagram of the refrigerator according to the first embodiment of this application;

[0170] Figure 2 is a perspective structural diagram of a portion of the refrigerator according to the first embodiment of this application;

[0171] Figure 3 is an exploded perspective view of a portion of the structure of the refrigerator according to the first embodiment of this application;

[0172] Figure 4 is a schematic block diagram of a portion of the structure of the refrigerator according to the first embodiment of this application;

[0173] Figure 5 is a perspective structural diagram of the gas processing module and gas distribution module according to the first embodiment of this application;

[0174] Figure 6 is an exploded view of the gas processing module and gas distribution module of the first embodiment of this application;

[0175] Figure 7 is a three-dimensional structural diagram of the gas distribution module according to the first embodiment of this application;

[0176] Figure 8 is a perspective structural diagram of a portion of the gas distribution module according to the first embodiment of this application;

[0177] Figure 9 is a top view of the gas processing module and gas distribution module according to the first embodiment of this application;

[0178] Figure 10 is a cross-sectional view of line AA in Figure 9;

[0179] Figure 11 is a cross-sectional view of line BB in Figure 9;

[0180] Figure 12 is a cross-sectional view of the CC line in Figure 9;

[0181] Figure 13 is a schematic block diagram of the structure of some components of the first embodiment of this application;

[0182] Figure 14 is a flowchart of a refrigerator control method according to the first embodiment of this application;

[0183] Figure 15 is a schematic block diagram of a portion of the structure of a refrigerator according to the second embodiment of this application;

[0184] Figure 16 is a perspective view of a portion of the refrigerator structure according to the second embodiment of this application from a side-bottom perspective.

[0185] Figure 17 is a side view of a portion of the structure of a refrigerator according to the second embodiment of this application;

[0186] Figure 18 is a schematic block diagram of the structure of some components of the second embodiment of this application;

[0187] Figure 19 is a schematic block diagram of a portion of the structure of a refrigerator according to the third embodiment of this application;

[0188] Figure 20 is an exploded perspective view of a portion of the structure of a refrigerator according to the fourth embodiment of this application;

[0189] Figure 21 is a perspective structural diagram of the gas processing module and gas distribution module according to the fourth embodiment of this application;

[0190] Figure 22 is an exploded view of the gas processing module and gas distribution module according to the fourth embodiment of this application;

[0191] Figure 23 is a top view of a partial structure of a gas processing module and a gas distribution module according to the fourth embodiment of this application;

[0192] Figure 24 is a cross-sectional view of line BB in Figure 23;

[0193] Figure 25 is a perspective structural view of the top cover of the gas distribution box according to the fourth embodiment of this application from a lower angle.

[0194] Figure 26 is a cross-sectional view of line AA in Figure 20;

[0195] Figure 27 is a schematic block diagram of the structure of some components of the fourth embodiment of this application;

[0196] Figure 28 is a flowchart of a refrigerator control method according to the fourth embodiment of this application;

[0197] Figure 29 is a schematic block diagram of a portion of the structure of a refrigerator according to the fifth embodiment of this application;

[0198] Figure 30 is an exploded view of the gas processing module and gas distribution module according to the fifth embodiment of this application;

[0199] Figure 31 is a top view of a partial structure of a gas processing module and a gas distribution module according to the fifth embodiment of this application;

[0200] Figure 32 is a cross-sectional view of line AA in Figure 31;

[0201] Figure 33 is a schematic block diagram of the structure of some components of the fifth embodiment of this application;

[0202] Figure 34 is a flowchart of a refrigerator control method according to the fifth embodiment of this application;

[0203] Figure 35 is another flowchart of the refrigerator control method according to the fifth embodiment of this application;

[0204] Figure 36 is a schematic block diagram of the structure of some components of the sixth embodiment of this application;

[0205] Figure 37 is a schematic block diagram of the structure of some components of the seventh embodiment of this application.

[0206] Figure 38 is a front view of the refrigerator provided in the eighth embodiment of this application;

[0207] Figure 39 is an exploded view of the first food storage container, the second food storage container, and the modified atmosphere integrated module in Figure 38.

[0208] Figure 40 is another exploded schematic diagram of the first food storage container, the second food storage container, and the modified atmosphere integrated module in Figure 38.

[0209] Figure 41 is a three-dimensional structural diagram of the first and second food storage containers in Figure 39;

[0210] Figure 42 is a three-dimensional structural diagram of the controlled atmosphere integrated module in Figure 39;

[0211] Figure 43 is another three-dimensional structural schematic diagram of the controlled atmosphere integrated module in Figure 39;

[0212] Figure 44 is a front view of the first food storage container, the second food storage container, and the modified atmosphere integrated module provided in the eighth embodiment of this application;

[0213] Figure 45 is an exploded schematic diagram of part of the structure of the controlled atmosphere integrated module in Figure 39;

[0214] Figure 46 is a top view of the first fresh-keeping room, the second fresh-keeping room, the third fresh-keeping room, and the modified atmosphere integrated module provided in the eighth embodiment of this application.

[0215] Figure 47 is a schematic diagram of the structure of the controlled atmosphere integrated module in the ninth embodiment of this application;

[0216] Figure 48 is a top view of the controlled atmosphere integrated module in Figure 47;

[0217] Figure 49 is a cross-sectional view along line AA in Figure 48;

[0218] Figure 50 is an enlarged view of section B in Figure 49;

[0219] Figure 51 is a cross-sectional view along line CC in Figure 48;

[0220] Figure 52 is an enlarged view of point D in Figure 51;

[0221] Figure 53 is a schematic diagram of the gas distribution box in Figure 49;

[0222] Figure 54 is a schematic diagram of the structure of the controlled atmosphere integrated module in another variation of this application;

[0223] Figure 55 is a cross-sectional view along line EE in Figure 54. Detailed Implementation

[0224] The present application will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this application.

[0225] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0226] The terms used herein, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. These terms may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” another unit or feature would be “above” that unit or feature. Therefore, the exemplary term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise) and the spatially related descriptive terms used herein will be interpreted accordingly.

[0227] [First Embodiment]

[0228] Referring to Figures 1 to 14, the first embodiment of this application provides a refrigerator 100.

[0229] The refrigerator 100 includes a cabinet 10, a door 20, and a refrigeration system.

[0230] The cabinet 10 includes a shell 11, one or more inner liners 12, and an insulation layer. The shell 11 forms part of the exterior of the refrigerator 100. In the embodiment shown in the drawings, the shell 11 is generally a box-like structure with a back panel, a top panel, a bottom panel, a left side panel, and a right side panel. The one or more inner liners 12 are fitted inside the shell 11 and spaced apart from the shell 11 to create a space between the shell 11 and the one or more inner liners 12. The insulation layer fills the space; specifically, the insulation layer may include insulation board and foam material.

[0231] The one or more inner liner 12 enclose a number of compartments, which may include a freezer compartment 102, a refrigerator compartment 101, a variable temperature compartment, etc., depending on the storage temperature setting value in the compartment.

[0232] The number of doors 20 is set to one or more, each door 20 being movably connected to the front side of the housing 10 and used to open and close each of the compartments. For example, when a compartment is opened by a door 20, the user can put or take items into the compartment; when a compartment is closed by a door 20, the compartment is essentially sealed, and the user cannot put or take items in or out. Furthermore, the low-temperature gas inside the compartment cannot enter or exit the compartment through the seam between the door 20 and the housing 10, thereby achieving low-temperature storage.

[0233] The refrigeration system includes a cooler for providing cooling capacity to the refrigerator 100 in order to maintain a low-temperature storage environment in each of the compartments.

[0234] The specific structure of a refrigeration system can be implemented in various ways in this field. For example, in one embodiment, the refrigeration system can be configured as a thermoelectric refrigeration system, with its cooler configured as a semiconductor refrigeration chip; in another embodiment, the refrigeration system can be configured as a vapor compression refrigeration system, with its cooler configured as an evaporator. In addition, it also includes a compressor, a condenser, a throttling element, etc. The compressor, condenser, throttling element, and evaporator are connected in series to form a circulation pipeline. Under the action of the compressor, the refrigerant flows in the circulation pipeline and absorbs and releases heat based on phase change, and then exchanges heat with the air at the evaporator to produce the cold air required by the room.

[0235] In this application, the enclosure 10 is also provided with a refrigeration chamber and a cold air duct.

[0236] The refrigeration chamber is equipped with the cooler. As mentioned above, when the refrigeration system is started, the cooler can exchange heat with the air in the refrigeration chamber, so that the air in the refrigeration chamber becomes cold air.

[0237] The cold air duct connects the refrigeration chamber and some or all of the compartments, thereby allowing cold air to circulate between the refrigeration chamber and the compartments, thus providing cold air to the compartments to maintain the low temperature environment of the compartments.

[0238] Specifically, for example, the cold air duct may include a supply air duct and a return air duct. The supply air duct connects the refrigeration chamber and the compartment, allowing cold air to flow from the refrigeration chamber to the compartment along the supply air duct; the return air duct connects the refrigeration chamber and the compartment, allowing cold air to flow from the compartment back to the refrigeration chamber along the return air duct.

[0239] Of course, with the goal of meeting the cooling needs of each compartment, there are many feasible ways to connect the cold air duct, the cooling chamber, and each compartment. These feasible ways have been disclosed in the art and will not be elaborated in this application.

[0240] Referring to Figure 2, in this application, an air duct cover 14 is provided on the rear side of compartment 101; the refrigerator 100 also includes at least two fresh-keeping compartments 50 disposed in compartment 101. For example, the at least two fresh-keeping compartments 50 may include a first fresh-keeping compartment 50A and a second fresh-keeping compartment 50B.

[0241] The air supply duct has a number of air outlets 151 distributed around the periphery of the fresh food compartment 50, so that the cold air in the refrigeration chamber flows through the air supply duct to the fresh food compartment 50, thereby cooling the fresh food compartment 50 (e.g., the first fresh food compartment 50A and the second fresh food compartment 50B) to maintain a low temperature environment.

[0242] Referring to Figures 3 to 5, the refrigerator 100 also includes a gas handling module 60 and a gas distribution module 70.

[0243] The gas processing module 60 is configured to generate a preservation gas for adjusting the content of a specific gas, which can be supplied to each preservation compartment 50 to adjust the content of the specific gas in these preservation compartments 50.

[0244] These specific gases can be, for example, any of oxygen, nitrogen, carbon dioxide, ethylene, etc.

[0245] After the preservation gas is supplied to a preservation chamber 50, the volume ratio of the specific gas in the preservation chamber 50 changes relative to the composition of air. When the volume ratio of the specific gas reaches the target range, the preservation effect of the food stored in the preservation chamber 50 can be improved.

[0246] Air typically contains the following components by volume: nitrogen (approximately 78%), oxygen (approximately 21%), rare gases (helium, neon, argon, krypton, xenon, radon) (approximately 0.934%), carbon dioxide (approximately 0.04%), and other substances (such as water vapor, impurities, etc.) (approximately 0.02%).

[0247] In this application, the gas processing module 60 has an outlet for the release of preservation gas (e.g., outlets 611 and 613 described later); the gas distribution module 70 is assembled on the gas processing module 60 and forms a modified atmosphere integrated module with the gas processing module 60. The gas distribution module 70 includes at least two gas distribution channels, the two gas distribution channels are connected in parallel to the outlet, and each gas distribution channel is connected to the corresponding preservation compartment 50.

[0248] Thus, this application sets up a gas distribution module 70 and assembles the gas distribution module 70 into a gas processing module 60 to form a modified atmosphere integrated module. At the same time, the gas distribution module 70 has multiple parallel gas distribution channels to supply the same type of preservation gas to each preservation compartment 50. In this way, the gas distribution module 70 realizes the airflow supply of multiple preservation compartments 50, which is conducive to the rational and precise distribution of preservation gas and greatly reduces the complexity of the pipeline structure. The installation and layout of the preservation supply pipeline of the preservation compartment 50 are simple. In addition, it can realize more diversified combinations of the preservation compartments 50, which greatly improves the preservation function of the refrigerator 100.

[0249] In one embodiment, the at least two gas distribution channels may include a first gas distribution channel 721A and a second gas distribution channel 722B.

[0250] The first gas distribution channel 721A and the second gas distribution channel 722B are connected in parallel, which makes it easier to effectively distribute the preservation gas to the first preservation compartment 50A and the second preservation compartment 50B.

[0251] The first gas distribution channel 721A connects the gas processing module 60 and the first fresh-keeping compartment 50A, so that the fresh-keeping gas can flow from the gas processing module 60 to the first fresh-keeping compartment 50A; the second gas distribution channel 722B connects the gas processing module 60 and the second fresh-keeping compartment 50B, so that the fresh-keeping gas can flow from the gas processing module 60 to the second fresh-keeping compartment 50B.

[0252] In this embodiment, the specific gas adjustment volume ratio of the first preservation chamber 50A and the second preservation chamber 50B is A:B; correspondingly, the minimum cross-sectional area ratio of the first gas distribution channel 721A and the second gas distribution channel 722B is C:D. Wherein, A≥B, C≥D, and C:D is between A:4B / 5 and A:6B / 5; or, A<B, C<D, and C:D is between A:4B / 5 and A:6B / 5.

[0253] In this way, by associating the specific gas adjustment volume ratio of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B with the minimum cross-sectional area ratio of the first gas distribution channel 721A and the second gas distribution channel 722B, the two satisfy a certain size relationship. Thus, when performing modified atmosphere preservation in the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, the freshness preservation target can be achieved in the shortest time and with the highest efficiency. This not only improves the freshness preservation effect but also reduces the energy consumption of the refrigerator 100 during modified atmosphere preservation.

[0254] In this application, the "specific gas adjustment volume ratio of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B" refers to the ratio of the specific gas adjustment volume of the first fresh-keeping compartment 50A to the specific gas adjustment volume of the second fresh-keeping compartment 50B.

[0255] Here, the specific gas adjustment volume of the first preservation chamber 50A refers to the volume A of the specific gas required to change the air atmosphere of the first preservation chamber 50A to the set target atmosphere.

[0256] For example, if the volume percentage of a specific gas in the air is P1, the target volume percentage of the specific gas in the first fresh-keeping chamber 50A is P2a, and the volume of the first fresh-keeping chamber 50A is Va, then the adjusted volume of the specific gas in the first fresh-keeping chamber 50A is A = Va × |P1 - P2a|.

[0257] Similarly, the specific gas adjustment volume of the second preservation chamber 50B refers to the volume B of the specific gas required to change the air atmosphere of the second preservation chamber 50B to the set target atmosphere.

[0258] For example, if the volume percentage of a specific gas in the air is P1, the target volume percentage of a specific gas in the second preservation chamber 50B is P2b, and the volume of the second preservation chamber 50B is Vb, then the adjusted volume of the specific gas in the second preservation chamber 50B is A = Vb × |P1 - P2b|.

[0259] The fulfillment of the relationships between A, B, C, and D above means that if the specific gas adjustment volume of the first fresh-keeping compartment 50A is greater than or equal to the specific gas adjustment volume of the second fresh-keeping compartment 50B, then the minimum cross-sectional area of ​​the first gas distribution channel 721A is greater than or equal to the minimum cross-sectional area of ​​the second gas distribution channel 722B. Conversely, if the specific gas adjustment volume of the first fresh-keeping compartment 50A is less than the specific gas adjustment volume of the second fresh-keeping compartment 50B, then the minimum cross-sectional area of ​​the first gas distribution channel 721A is greater than or equal to the minimum cross-sectional area of ​​the second gas distribution channel 722B.

[0260] In one embodiment, the refrigerator 100 also includes a fan 73.

[0261] The fan 73 is used to drive the preservation gas from the gas processing module 60 to the first gas distribution channel 721A and the second gas distribution channel 722B. In this way, by using a fan 73 and combining the first gas distribution channel 721A and the second gas distribution channel 722B with a specific cross-sectional area ratio, the distribution of the preservation gas generated by the gas processing module 60 in the first preservation chamber 50A and the second preservation chamber 50B can be further improved. Under the conditions of highest efficiency and lowest energy consumption, the two preservation chambers 50 can achieve the preservation target at the same time.

[0262] In one embodiment, the refrigerator 100 further includes a main gas distribution channel 72.

[0263] The main gas distribution channel 72 is connected between the gas processing module 60 and the first gas distribution channel 721A. Furthermore, the main gas distribution channel 72 is also connected between the gas processing module 60 and the second gas distribution channel 722B, so that the preservation gas at the gas processing module 60 passes through the main gas distribution channel 72, with part of it entering the first gas distribution channel 721A and the other part entering the second gas distribution channel 722B.

[0264] The fan 73 is installed in the main air distribution channel 72. In this way, the controlled atmosphere for preservation in the two preservation compartments 50 can be achieved by one fan 73, which is efficient and low cost.

[0265] Referring to Figures 3 to 7, in one embodiment, the air distribution module 70 includes an air distribution box 71 and a fan 73.

[0266] The first gas distribution channel 721A and the second gas distribution channel 722B are at least partially formed in the gas distribution box 71; and the gas distribution box 71 has an inlet 710, which is connected to the gas processing module 60; the fan 73 is disposed in the gas distribution box 71, with its intake port facing the inlet 710 and its exhaust port 731 facing the first gas distribution channel 721A and the second gas distribution channel 722B.

[0267] In this way, by setting up the gas distribution box 71 to arrange at least part of the first gas distribution channel 721A and the second gas distribution channel 722B, and to accommodate the fan 73, the gas path layout between the gas processing module 60 and the two fresh-keeping compartments 50 is realized by a gas distribution module 70 as a whole. The structure is simple, which is conducive to the planning of gas path and the rational distribution of fresh-keeping gas. The overall structure and fresh-keeping effect of the refrigerator 100 are optimized to the greatest extent.

[0268] In the attached illustration, the air distribution box 71 is set as a hexahedral box-shaped structure, but its structural shape is not limited to this.

[0269] Preferably, the gas distribution box 71 includes a first connector 712 and a second connector 713.

[0270] The first gas distribution channel 721A has a first gas distribution port 721 formed on the modified atmosphere integrated module. The first gas distribution port 721 is formed within the first connector 712 and defines the minimum cross-section of the first gas distribution channel 721A. The second gas distribution channel 722B has a second gas distribution port 722 formed on the modified atmosphere integrated module. The second gas distribution port 722 is formed within the second connector 713 and defines the minimum cross-section of the second gas distribution channel 722B.

[0271] As mentioned above, the cross-sectional area ratio of the first gas distribution port 721 and the second gas distribution port 722 is C:D. That is to say, the inner diameter of the first gas distribution port 721 and the second gas distribution port 722 on the gas distribution box 71 is set to be basically consistent with the specific gas adjustment volume ratio of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B. This achieves the distribution of fresh-keeping gas in the two fresh-keeping compartments 50, which is simple in structure and convenient in control.

[0272] Further, referring to Figures 8 to 12, the gas processing module 60 includes a processing box 61 and a gas processing unit 62 located within the processing box 61.

[0273] The gas processing unit 62 is used to generate a preservative gas for adjusting the content of a specific gas.

[0274] The gas processing unit 62 can specifically form the preservation gas through methods such as air physical separation, photocatalysis, chemical reaction, and electrochemical reaction.

[0275] For example, in one embodiment, the gas processing unit 62 may be configured as an electrolytic device that generates a preservative gas through an electrochemical reaction, comprising a frame body 623, at least one anode 621 and at least one cathode 622.

[0276] The cathode 622, anode 621, and frame 623 together enclose an inner cavity 620 for containing electrolyte. For example, the frame 623 includes two opposing windows. The cathode 622 is sealed over one of the windows and is fixedly connected to the frame 623, with its first side facing the interior of the frame 623 to facilitate contact with the electrolyte inside the frame 623. The second side of the cathode 622 is exposed outside the gas processing unit 62 from the window, thereby contacting the gas outside the gas processing unit 62. The anode 621 is sealed over the other window and is fixedly connected to the frame 623. Thus, the cathode 622, anode 621, and frame 623 together enclose the inner cavity 620 for containing electrolyte.

[0277] Alternatively, the cathode 622 and the frame body 623 may together enclose an inner cavity 620 for containing the electrolyte. For example, the frame body 623 may include one or more windows arranged opposite each other, each window having a cathode 622 disposed thereat. These cathodes 622 and the frame body 623 together enclose an inner cavity 620 for containing the electrolyte; correspondingly, the anode 621 is located inside the inner cavity 620.

[0278] The anode 621 is controllably connected to the positive terminal of the power supply, and the cathode 622 is controllably connected to the negative terminal of the power supply.

[0279] Thus, when the gas processing module 60 is running, the positive terminal of the power supply is connected to the anode 621 and the negative terminal of the power supply is connected to the cathode 622, that is, the power supply supplies power to the gas processing unit 62; and when the gas processing module 60 stops running, the positive terminal of the power supply is connected to the anode 621 and the negative terminal of the power supply is connected to the cathode 622, that is, the power supply stops supplying power to the gas processing unit 62.

[0280] The power source can be a power source installed in the refrigerator 100, such as a battery pack, or it can be an external power source for the refrigerator 100.

[0281] The first side of the cathode 622 is exposed in the inner cavity 620, and the second side is exposed in the outside of the gas processing unit 62 and inside the processing box 61.

[0282] When the gas treatment module 60 is running, i.e., when it is energized, the cathode 622 is used to consume oxygen in the external air of the gas treatment unit 62 through an electrochemical reaction. Specifically, oxygen undergoes a reduction reaction at the cathode 622, with the reaction formula being O2 + 2H2O + 4e. - →4OH - In this way, a preservative gas in an oxygen-deficient state can be formed on the outside of the gas processing unit 62.

[0283] One or both sides of the anode 621 are exposed in the inner cavity 620. The anode 621 is used to generate oxygen in the inner cavity 620 through an electrochemical reaction. Specifically, OH- in the electrolyte... - An oxidation reaction can occur at the anode 621 to generate oxygen, with the reaction formula 4OH. - →O2 + 2H2O + 4e - This creates an oxygen-rich preservative gas in the inner cavity 620.

[0284] Referring to Figures 8 to 12, the processing box 61 is provided with a first air outlet 611 and a second air outlet.

[0285] The first air outlet 611 connects the interior of the processing box 61 and the exterior of the gas processing unit 62, and is connected to the inlet 710, so that oxygen-deficient preservation gas can flow from the processing box 61 into the gas distribution box 71; while the second air outlet 613 is connected to the inner cavity 620 of the gas processing unit 62 through a pipe, so that oxygen-rich preservation gas can flow out of the processing box 61.

[0286] In the embodiment shown in the figure, the first preservation compartment 50A and the second preservation compartment 50B can have an oxygen-deficient preservation function. Correspondingly, the inlet 710 of the gas distribution box 71 is configured to be connected to the first outlet 611, so that the oxygen-deficient preservation gas flowing out of the first outlet 611 flows to the first preservation compartment 50A and the second preservation compartment 50B.

[0287] Accordingly, in this embodiment, the third fresh-keeping compartment 50C of the refrigerator 100 is configured to have an oxygen-enriched fresh-keeping function. Correspondingly, the third fresh-keeping compartment 50C can be connected to the second air outlet 613, so that the oxygen-enriched fresh-keeping gas flowing out of the second air outlet 613 flows to the third fresh-keeping compartment 50C.

[0288] Of course, in a variation embodiment, the first preservation chamber 50A and the second preservation chamber 50B may have an oxygen-enriched preservation function. Accordingly, the inlet 710 of the gas distribution box 71 is configured to be connected to the second outlet 613, so that the oxygen-enriched preservation gas flowing out of the second outlet 613 flows to the first preservation chamber 50A and the second preservation chamber 50B.

[0289] Furthermore, referring again to Figure 4, the refrigerator 100 also includes a first return air passage 741A and a second return air passage 742B.

[0290] The first return gas channel 741A connects the gas processing module 60 and the first fresh-keeping compartment 50A, so that gas can flow from the first fresh-keeping compartment 50A to the gas processing module 60. In this way, combined with the first gas distribution channel 721A, a circulating airflow is formed between the gas processing module 60 and the first fresh-keeping compartment 50A.

[0291] Similarly, the second return air passage 42B connects the gas processing module 60 and the second fresh-keeping compartment 50B, so that gas can flow from the second fresh-keeping compartment 50B to the gas processing module 60. In this way, combined with the second gas distribution passage 722B, a circulating airflow is formed between the gas processing module 60 and the second fresh-keeping compartment 50B.

[0292] The first return air passage 741A and the second return air passage 742B are also arranged in parallel; and the minimum cross-sectional area ratio of the first return air passage 741A and the second return air passage 742B is E:F. Where A≥B, E≥F and E:F is between A:4B / 5 and A:6B / 5; or, A<B, E<F and E:F is between A:4B / 5 and A:6B / 5.

[0293] This means that if the specific gas adjustment volume of the first fresh-keeping compartment 50A is greater than or equal to the specific gas adjustment volume of the second fresh-keeping compartment 50B, then the minimum cross-sectional area of ​​the first return gas channel 741A is greater than or equal to the minimum cross-sectional area of ​​the second return gas channel 742B. Conversely, if the specific gas adjustment volume of the first fresh-keeping compartment 50A is less than the specific gas adjustment volume of the second fresh-keeping compartment 50B, then the minimum cross-sectional area of ​​the first return gas channel 741A is less than the minimum cross-sectional area of ​​the second return gas channel 742B.

[0294] Furthermore, satisfying the relationship between A, B, E, and F allows for more precise control of the distribution of preservative gases when performing modified atmosphere storage in the first preservation compartment 50A and the second preservation compartment 50B. This ensures that both preservation compartments 50 achieve their preservation goals in the shortest time and with the highest efficiency, which not only improves the preservation effect but also reduces the energy consumption of the refrigerator 100 during modified atmosphere storage.

[0295] In one specific embodiment, C:D = A:B can be set, which can further improve the accuracy of control and reduce the design difficulty of components (such as the first connector 712 and the second connector 713).

[0296] Similarly, E:F = A:B can be set, which can further improve the accuracy of control and reduce the design difficulty of components (such as the third connector 714 and the fourth connector 715 mentioned later).

[0297] In one embodiment, the first return gas passage 741A and the second return gas passage 742B are at least partially formed in the gas distribution box 71.

[0298] For example, referring to Figure 7, the gas distribution box 71 also includes an outlet 740, a third connector 714, and a fourth connector 715.

[0299] Outlet 740 is connected to gas processing module 60; first return gas passage 741A has a first return gas port 741 formed on gas distribution box 71, the first return gas port 741 is formed in third connector 714, and the first return gas port 741 defines the minimum cross-section of first return gas passage 741A; similarly, second return gas passage 742B has a second return gas port 742 formed on gas distribution box 71, the second return gas port 742 is formed in fourth connector 715, and the first return gas port 741 defines the minimum cross-section of second return gas passage 742B.

[0300] As mentioned above, the cross-sectional area ratio of the first return air port 741 and the second return air port 742 is E:F, which is set to be basically consistent with the specific gas adjustment volume ratio of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B. This achieves the distribution of fresh-keeping gas in the two fresh-keeping chambers 50, which is simple in structure and convenient in control.

[0301] Furthermore, based on the structure described above, when the fan 73 is running, driven by the fan 73, the gas in the first fresh-keeping chamber 50A enters the gas distribution box 71 through the first return gas port 741, then flows out through the outlet 740, and then flows to the gas processing module 60. The gas processing module 60 processes it into fresh-keeping gas (for example, by adjusting the volume ratio of a specific gas), and then flows into the gas distribution box 71 through the inlet 710, then leaves the gas distribution box 71 through the first gas distribution port 721, and finally enters the first fresh-keeping chamber 50A.

[0302] Meanwhile, when the fan 73 is running, the gas in the second fresh-keeping compartment 50B enters the gas distribution box 71 through the second return air port 742, then flows out through the outlet 740, and then flows to the gas processing module 60. The gas processing module 60 processes the gas into fresh-keeping gas (for example, by adjusting the volume ratio of a specific gas or by reducing the oxygen content), and then flows into the gas distribution box 71 through the inlet 710, then leaves the gas distribution box 71 through the second gas distribution port 722, and finally enters the second fresh-keeping compartment 50B.

[0303] Accordingly, referring to Figure 6, the processing box 61 is also provided with an air inlet 612.

[0304] The air inlet 612 connects the interior of the processing box 61 and the exterior of the gas processing unit 62. The air inlet 612 is also connected to the outlet 740, so that the gas flowing out of the outlet 740 can return to the processing box 61 through the air inlet 612, so that the gas processing unit 62 can adjust the content of a specific gas (e.g., reduce the oxygen content).

[0305] In one embodiment, the gas distribution box 71 is fixedly assembled on the top wall of the processing box 61.

[0306] Correspondingly, the first air outlet 611 and the air inlet 612 are both located on the top wall of the processing box 61, and the inlet 710 and the outlet 740 are both located on the bottom wall of the air distribution box 71; the first air outlet 611 and the inlet 710 are vertically aligned and sealed together, and the air inlet 612 and the outlet 740 are vertically aligned and sealed together.

[0307] Referring to Figures 2 and 3, in one embodiment, the first preservation compartment 50A is located above the gas distribution box 71 and has a first air supply hole and a first air return hole 52A.

[0308] The first connector 712 is connected vertically to the first air supply port 51A, and the third connector 714 is connected vertically to the first air return port 52. In this way, the air distribution module 70 and the first preservation compartment 50A can be quickly and easily assembled.

[0309] In addition, the second fresh-keeping compartment 50B is located below the first fresh-keeping compartment 50A, and the combination of the gas distribution module 70 and the gas processing module 60 is arranged on the side of the second fresh-keeping compartment 50B.

[0310] Furthermore, the refrigerator 100 also includes a first door for opening and closing the first fresh-keeping compartment 50A and a second door for opening and closing the second fresh-keeping compartment 50B.

[0311] For example, a first fresh-keeping compartment 50A is formed in a first fresh-keeping cylinder, the first fresh-keeping cylinder having a first opening at the front, and the first door being configured as a drawer-type door and fitting into the first opening for pulling forward to open the first fresh-keeping compartment 50A and pushing backward to close the first fresh-keeping compartment 50A.

[0312] Similarly, a second fresh-keeping compartment 50B is formed in a second fresh-keeping cylinder, which has a second opening at the front. The second door is configured as a drawer-type door and fits into the second opening for pulling forward to open the second fresh-keeping compartment 50B and pushing backward to close the second fresh-keeping compartment 50B.

[0313] Currently, neither the first door nor the second door is limited to being a drawer-type door; they can also be any type, such as a pivot-type door or a sliding door.

[0314] Referring to Figure 13, the refrigerator 100 also includes a control system 90, which includes a first signal device 911, a second signal device 912, and a controller 92.

[0315] The first signal device 911 is used to sense the opening and closing of the first door. For example, when the first door opens the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first opening signal; when the first door closes the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first closing signal.

[0316] Similarly, the second signal device 912 is used to sense the opening and closing of the second door. For example, when the second door opens the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second opening signal; when the second door closes the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second closing signal.

[0317] The controller 92 is connected to the first signaler 911, the second signaler 912, the fan 73 and the gas handling module 60, and is used to control the operation of the fan 73 and the gas handling module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0318] The first signal device 911 and the second signal device 912 can be configured as any one of pressure sensors, infrared sensors, etc., or they can be integrated with the controller 92 as a single signal unit.

[0319] Referring to Figure 14, the controller 92 is configured as follows:

[0320] When it is determined that both the first door and the second door are closed, the fan and the gas handling module are turned on and the timer starts until the target running time is reached;

[0321] Within the target duration: if it is determined that both the first door and the second door are open, the gas handling module 60 is shut down and the fan 73 remains running; if it is determined that only one of the first door and the second door is open, the gas handling module 60 remains running and the fan 73 is shut down.

[0322] Thus, on the one hand, during modified atmosphere preservation, based on the minimum cross-sectional area ratio of the first gas distribution channel 721A and the second gas distribution channel 722B mentioned above, the first preservation chamber 50A and the second preservation chamber 50B can simultaneously achieve the preservation target in the shortest time.

[0323] On the other hand, during the modified atmosphere preservation period, if both the first door and the second door are open, the gas handling module 60 is turned off (e.g., power is cut off) while the fan 73 is kept running. This can promote the gas in the gas handling module 60 to be blown into the first preservation chamber 50A and the second preservation chamber 50B, and then escape to the outside through the open first and second openings, thereby achieving the dehumidification effect and preventing the electrical components from being damaged due to excessive humidity in the gas handling module 60.

[0324] On the other hand, during modified atmosphere storage, if only the first door or only the second door is open, the gas processing module 60 is kept running while the fan 73 is turned off. In this way, the gas processing module 60 continues to perform electrochemical reactions to produce preservative gas. Thus, after the first and second doors are closed, the two storage compartments can reach the preservation target in the shortest time, while avoiding frequent switching of the gas processing module 60 and thus reducing its lifespan.

[0325] In one embodiment, the controller 92 is further configured to:

[0326] Within the target duration: if it is determined that both the first door and the second door are open, the gas handling module 60 is shut down and the fan 73 continues to run with an increased speed.

[0327] Thus, during controlled atmosphere preservation, if both the first and second doors are open, the fan 73 will dehumidify at a higher speed, thereby achieving the optimal dehumidification effect by taking advantage of the short time that both the first and second doors are open.

[0328] In addition, controller 92 is also configured as follows:

[0329] Within the target duration: if it is determined that the first door and the second door are always closed, then after the target duration, the gas processing module 60 and the fan 73 are controlled to be turned off, and after a preset interval, the fan 73 and the gas processing module 60 are controlled to be turned on and the timing starts until the second target duration is reached; wherein, the second target duration is less than the target duration.

[0330] Thus, with the first and second doors always closed, after the gas processing module 60 has been running for the target duration for a certain period of time, the gas processing module 60 will be run for a second target duration, which will be shorter. This will maintain a stable preservation atmosphere in both preservation compartments.

[0331] Furthermore, the controller 92 can also be used to implement various steps of the following control methods, which will not be elaborated here.

[0332] Specifically, controller 92 may include or be associated with one or more storage elements or non-transitory computer-readable storage media, such as RAM, ROM, EEPROM, EPROM, flash memory devices, magnetic disks, or other suitable storage devices (including combinations thereof). These storage devices may be components separate from the processor or may be contained on a board within the processor. Additionally, these storage devices may store information and / or data accessible by one or more processors, including instructions executable by the one or more processors. It should be understood that the instructions may be software written in any suitable programming language or may be implemented in hardware. Alternatively or additionally, the instructions may be executed logically and / or virtually using separate threads on one or more processors.

[0333] For example, controller 92 may be operable to execute programming instructions or microcontroller code associated with the operating cycle of refrigerator 100. In this respect, the instructions may be software or any set of instructions that, when executed by a processing device, cause the processing device to perform operations such as running one or more software applications, displaying a user interface, receiving user input, processing user input, etc. Furthermore, it should be noted that controller 92 disclosed herein is capable of and can be operated to perform any method, method step, or part of a method disclosed herein. For example, in some embodiments, the methods disclosed herein may be embodied in programming instructions stored in memory and executed by controller 92.

[0334] Referring again to Figure 14, an embodiment of this application also provides a control method, the various steps of which are described below.

[0335] Step S1: After the refrigerator 100 is powered on, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed. If so, control the fan 73 and the gas handling module 60 to turn on and start timing t.

[0336] For example, the first signal device 911 can be used to sense the opening and closing of the first door, and the controller 92 can monitor whether the first fresh-keeping compartment 50A is closed based on this; or, for example, the second signal device 912 can be used to sense the opening and closing of the second door, and the controller 92 can monitor whether the second fresh-keeping compartment 50B is closed based on this.

[0337] In step S1, "if" means that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed; conversely, "if not" means that at least one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is not closed.

[0338] Step S2: Within the target duration t1 after timing, monitor whether the first preservation compartment 50A and the second preservation compartment 50B are open.

[0339] In Figure 14, step S2 is the process stage of "t≥t1" → "the first preservation room is closed and the second preservation room is closed".

[0340] Step S3: If it is detected in step S2 that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open (that is, when “t≥t1” is “no” in Figure 14 corresponding to step S2 and “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “all no”), then control the gas handling module 60 to close, keep the fan 73 running, and return to step S1.

[0341] Step S4: If, in step S2, it is detected that only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is open (i.e., after “t≥t1” is “No” in Figure 14 corresponding to step S2, “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “Other”), then control the gas handling module 60 to continue running, the fan 73 to be turned off, and return to step S1.

[0342] Preferably, in step S3, the rotational speed of the fan 73 is increased, that is, the rotational speed of the fan 73 is greater than the rotational speed of the fan 73 in step S1.

[0343] In one embodiment, the control method further includes the following steps.

[0344] Step S5: If it is detected in step S2 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is open (i.e., after “t≥t1” is “no” in Figure 14 corresponding to step S2, “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “yes”), after the target duration t1 is reached, the fan 73 and the gas processing module 60 are shut down, and the timer t' is started to enter step S6.

[0345] Here, steps S2 to S5 refer to the following: if both the first preservation chamber 50A and the second preservation chamber 50B remain closed throughout the target duration t1, the gas processing module 60 and the fan 73 will be turned off after the preservation process is completed.

[0346] Step S6: Within the preset interval t2 after timing t', monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open.

[0347] In Figure 14, step S6 is the process stage of “t’≥t2” → “the first preservation room is closed and the second preservation room is closed”.

[0348] Step S7: If it is detected in step S6 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is open (that is, when “t’≥t2” is “no” in Figure 14 corresponding to step S6 and “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “yes”), then when the timer t’ reaches the preset interval t2 (that is, when “t’≥t2” is judged as “yes” in Figure 12), proceed to step S8.

[0349] Step S8: Control the fan 73 and gas processing module 60 to start again, and continue to run for the second target time t3 before shutting down the fan 73 and gas processing module 60, and return to step S1 after the second preset interval time t4.

[0350] In Figure 14, step S8 corresponds to the process stages of "turning on the fan and gas processing module and starting timer t" → "t"≥t3" is judged as "yes" → "turning off the fan and gas processing module and starting timer t0" → "t0"≥t4" is judged as "yes".

[0351] Wherein, the second target duration t3 is less than the target duration t1, and the second preset interval duration t4 is not less than the preset interval duration t2.

[0352] Thus, the duration t3 of the modified atmosphere operation in step S8 is shorter than the duration t1 of the modified atmosphere operation in step S1. While stabilizing the preservation atmosphere environment of the two preservation chambers, energy saving is achieved. Furthermore, the relatively long interval t4 before restarting the long-term modified atmosphere operation (i.e., the modified atmosphere operation in step 1) can further reduce energy consumption and improve the service life of the gas processing module 60.

[0353] In addition, the control method further includes the following steps.

[0354] Step S9: If it is detected in step S6 that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open (that is, when “t’≥t2” is judged as “no” in Figure 14 corresponding to step S6 and “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “all no”), then control the gas handling module 60 to close, the fan 73 to open, and return to step S1.

[0355] This allows for the reduction of humidity in the gas handling module 60, especially around the gas handling unit 62.

[0356] Preferably, in step S9, the rotational speed of the fan 73 is increased, that is, the rotational speed of the fan 73 is greater than that in steps S1, S8 and S10.

[0357] The rotational speed of the fan 73 in step S3 is also greater than the rotational speed of the fan 73 in steps S1, S8 and S10.

[0358] Step S10: If, in step S6, it is detected that only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is open (i.e., after “t’≥t2” is “No” in Figure 14 corresponding to step S6, “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “Other”), then restart the timing t0’ and control the gas handling module 60 to open and the fan 73 to close. After detecting that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, control the gas handling module 60 to continue running and the fan 73 to open until the continuous timing reaches the third target duration t5 (i.e., when “t0’≥t5” is judged as “Yes” in Figure 14), then turn off the fan 73 and the gas handling module 60, and after the second preset interval duration t4, return to step S1.

[0359] That is, in step S10, as shown in Figure 14, when "t0'≥t5" is judged as "yes", then "the fan and gas processing module are shut down, and the timer t0 is started at the same time", until "t0"≥t4 is judged as "yes", and then the process returns to step S1.

[0360] Thus, through the above control method, on the one hand, during modified atmosphere preservation, based on the minimum cross-sectional area ratio of the first gas distribution channel 721A and the second gas distribution channel 722B mentioned above, the first preservation chamber 50A and the second preservation chamber 50B can simultaneously achieve the preservation target in the shortest time.

[0361] On the other hand, during the modified atmosphere preservation period, if both the first door and the second door are open, the gas handling module 60 is turned off (e.g., power is cut off) while the fan 73 is kept running. This can promote the gas in the gas handling module 60 to be blown into the first preservation chamber 50A and the second preservation chamber 50B, and then escape to the outside through the open first and second openings, thereby achieving the dehumidification effect and preventing the electrical components from being damaged due to excessive humidity in the gas handling module 60.

[0362] On the other hand, during modified atmosphere storage, if only the first door or only the second door is open, the gas processing module 60 is kept running while the fan 73 is turned off. In this way, the gas processing module 60 continues to perform electrochemical reactions to produce preservative gas. Thus, after the first and second doors are closed, the two storage compartments can reach the preservation target in the shortest time, while avoiding frequent switching of the gas processing module 60 and thus reducing its lifespan.

[0363] [Second Embodiment]

[0364] Next, referring to Figures 15 to 18, the second embodiment of this application provides a refrigerator 100, which differs from the first embodiment only in that: a controlled atmosphere damper 75 is provided in the second air distribution channel 722B, and a humidity control function is added to the second fresh-keeping compartment 50B. The following will only elaborate on these differences; other identical parts will not be described again.

[0365] In this embodiment, the gas distribution module 70 includes a controlled atmosphere damper 75.

[0366] The controlled atmosphere damper 75 is located at the second air distribution channel 722B and is used to open or close the second air distribution channel 722B.

[0367] Thus, by setting up the first gas distribution channel 721A and the second gas distribution channel 722B, and based on the setting of the controlled atmosphere fan 73 and the controlled atmosphere damper 75, the fresh-keeping gas distributed to the second gas distribution channel 722B can be adjusted under the state control of the controlled atmosphere damper 75. In this way, more fresh-keeping environments can be achieved to meet the different needs of the refrigerator 100, and the fresh-keeping effect is excellent.

[0368] In addition, the controlled atmosphere damper 75 can be controllably closed to close the second gas distribution channel 722B. That is to say, at this time, the preservation gas driven by the controlled atmosphere fan 73 can only enter the first preservation compartment 50A along the first gas distribution channel 721A, but cannot enter the second preservation compartment 50B.

[0369] Conversely, the controlled atmosphere damper 75 can be opened controllably in the second gas distribution channel 722B. That is to say, at this time, the preservation gas driven by the controlled atmosphere fan 73 can enter the first preservation chamber 50A along the first gas distribution channel 721A and the second preservation chamber 50B along the second gas distribution channel 722B.

[0370] In another embodiment, the modified atmosphere damper 75 can also be configured to have an adjustable opening. That is, for example, under the control of the controller 92, the modified atmosphere damper 75 can adjust the opening of the second gas distribution channel 722B, thereby adjusting the respective proportions of the fresh-keeping gas entering the first gas distribution channel 721A and the second gas distribution channel 722B.

[0371] For example, the controlled atmosphere damper 75 can open the second air distribution passage 722B at different rotation angles or at different moving distances (so that the opening area of ​​the second air distribution passage 722B is different).

[0372] In one embodiment, the controlled atmosphere fan 73 can be configured with adjustable speed. For example, the controller 92 described later can control the controlled atmosphere fan 73 to turn on or off, and can also control the controlled atmosphere fan 73 to operate at different speeds. In this way, multiple operating modes of the refrigerator 100 can be realized to meet various combinations of needs in the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, and the stability and effectiveness of the fresh-keeping atmosphere in the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B can be improved.

[0373] Next, the first gas distribution channel 721A has a first gas distribution port 721 formed on the modified atmosphere integrated module; the first gas distribution port 721 is connected to the first air supply hole 51A of the first preservation compartment 50A.

[0374] Correspondingly, the first return air channel 741A has a first return air port 741 formed on the controlled atmosphere integrated module; the first return air port 741 is connected to the first return air hole 52A of the first preservation compartment 50A.

[0375] Similarly, the second gas distribution channel 722B has a second gas distribution port 722 formed on the modified atmosphere integrated module, and the second gas distribution port 722 is connected to the second air supply port 51B of the second preservation compartment 50B.

[0376] Correspondingly, the second return air channel 722B has a second return air port 742 formed on the controlled atmosphere integrated module, and the second return air port 742 is connected to the second return air hole 52B of the second preservation compartment 50B.

[0377] Thus, when the controlled atmosphere fan 73 is running, the gas in the first fresh-keeping compartment 50A enters the gas distribution box 71 through the first return air port 741, then flows out through the outlet 740, and then flows to the gas processing module 60. The gas processing module 60 processes the gas into fresh-keeping gas (for example, by adjusting the volume ratio of a specific gas), and then flows into the gas distribution box 71 through the inlet 710, then leaves the gas distribution box 71 through the first gas distribution port 721, and finally enters the first fresh-keeping compartment 50A.

[0378] When the fan 73 is running, if the controlled atmosphere damper 75 opens the second gas distribution channel 722B, under the drive of the fan 73, the gas in the second fresh-keeping compartment 50B enters the gas distribution box 71 through the second return air port 742, then flows out through the outlet 740, and then flows to the gas processing module 60. The gas processing module 60 processes it into fresh-keeping gas (for example, adjusting the volume ratio of a specific gas, or reducing the oxygen content), and then flows into the gas distribution box 71 through the inlet 710, then leaves the gas distribution box 71 through the second gas distribution port 722, and finally enters the second fresh-keeping compartment 50B.

[0379] In one embodiment, one of the first preservation compartment 50A and the second preservation compartment 50B is located above the modified atmosphere integrated module, while the other is located to the side of the modified atmosphere integrated module. Optionally, as shown in the figure, the second preservation compartment 50B is located below the first preservation compartment 50A, and the integrated module consisting of the gas distribution module 70 and the gas processing module 60 is disposed to the side of the second preservation compartment 50B.

[0380] Thus, the positional relationship between the two fresh-keeping compartments 50 and the modified atmosphere integrated module makes the connection structure between the modified atmosphere integrated module and the two fresh-keeping compartments 50 simpler, reduces the use of pipelines, makes assembly more convenient, and makes the layout more reasonable.

[0381] Next, the refrigerator 100 includes a first crisper compartment 54A and a first door.

[0382] The first food storage container 54A encloses a first food storage compartment 50A. A first door is located in front of the first food storage container 54A and is used to open and close the first food storage compartment 50A. Of course, in a variant embodiment, the first food storage container 54A may also have an opening at the top, with the first door located above the first food storage container 54A.

[0383] Similarly, the second food storage container 54B encloses a second food storage compartment 50B, and a second door is located at the front of the second food storage container 54B for opening and closing the second food storage compartment 50B. Of course, in a variant embodiment, the second food storage container 54B may also have an opening at the top, with the second door located above the second food storage container 54B.

[0384] The second food storage container 54B includes the container body and the air-barrier and moisture-permeable membrane 55B.

[0385] For example, the box body has a through window that runs through the inside and outside, and a gas-barrier and moisture-permeable membrane 55B seals and covers the through window. The gas-barrier and moisture-permeable membrane 55B is configured to allow water vapor to pass through the second preservation compartment 50B.

[0386] The gas-barrier and moisture-permeable membrane 55B allows water vapor to pass through, but does not allow gas exchange between the second preservation compartment 50B and the outside. Its specific structure and materials are implemented using techniques known in the art and will not be described in detail.

[0387] Thus, by setting up an air-barrier and moisture-permeable membrane 55B, the second fresh-keeping compartment 50B can have multiple fresh-keeping environments, achieving more diversified fresh-keeping functions. For example, the second fresh-keeping compartment 50 can achieve adjustable humidity.

[0388] In one embodiment, the window is located at the lower rear part of the second preservation compartment 50, but it is not limited thereto.

[0389] Furthermore, the refrigeration system of the refrigerator 100 includes a cooler 32, which provides cooling capacity to the refrigerator 100 in order to maintain a low-temperature storage environment in each of the compartments.

[0390] The air supply duct 15 of the refrigerator 100 is connected to the refrigeration compartment that houses the cooler 32. The air supply duct 15 has a first air outlet 151, a second air outlet 152 and a humidity regulating damper 33.

[0391] The air supply duct 15 leads to the outer periphery of the second fresh-keeping compartment 50B through the first air supply port 151 and the second air supply port 152. That is, the cold air flowing out of the first air supply port 151 and the second air supply port 152 will flow along the outer surface of the second fresh-keeping box body 54B on the outer periphery of the second fresh-keeping compartment 50B to reduce the temperature inside the second fresh-keeping compartment 50B.

[0392] In this configuration, the cold air flowing from the second air outlet 152 is directed towards the air-barrier and moisture-permeable membrane 55B, compared to the first air outlet 151. In other words, the second air outlet 152 is closer to the air-barrier and moisture-permeable membrane 55B than the first air outlet 151. For example, in the diagram, the second air outlet 152 faces the air-barrier and moisture-permeable membrane 55B, but this is not the only case.

[0393] The humidity damper 33 can be used to open and close the second air outlet 152. In this way, the humidity control in the second preservation chamber 50B can be further realized through the setting of the second air outlet 152 and the humidity damper 33.

[0394] For example, when the humidity damper 33 opens the second air outlet 152, if the cooling fan 31 is turned on, the cold air blown out from the second air outlet 152 will accelerate the airflow speed on the surface of the air-barrier and moisture-permeable membrane 55B, thereby promoting the water vapor in the second fresh-keeping compartment 50B to pass through the air-barrier and moisture-permeable membrane 55B more quickly, thereby reducing the humidity in the second fresh-keeping compartment 50B and achieving dry zone preservation.

[0395] Furthermore, by controlling the duration for which the humidity damper 33 opens the second air outlet 152, or by adding the duration for which the cooling fan 31 is turned on, it is possible to further achieve precise control over the humidity range in the second fresh-keeping compartment 50B. For example, the longer the humidity damper 33 opens the second air outlet 152 and the longer the cooling fan 31 is turned on, the lower the humidity in the second fresh-keeping compartment 50B needs to be.

[0396] For example, when the humidity damper 33 closes the second air outlet 152, the cold air blown out from the second air outlet 152 will accelerate the airflow speed on the surface of the air-barrier and moisture-permeable membrane 55B, thereby promoting the water vapor in the second fresh-keeping compartment 50B to pass through the air-barrier and moisture-permeable membrane 55B more quickly, thereby reducing the humidity in the second fresh-keeping compartment 50B and achieving wet zone preservation.

[0397] In one embodiment, the air supply duct 15 also has a third air outlet 153.

[0398] The air supply duct 15 leads to the outer periphery of the first fresh-keeping compartment 50A through the third air supply port 153. That is, the cold air flowing out of the third air supply port 153 will flow along the outer surface of the first fresh-keeping box body 54A on the outer periphery of the first fresh-keeping compartment 50A to reduce the temperature inside the first fresh-keeping compartment 50A.

[0399] In this embodiment, the first fresh-keeping compartment 50A can be set as a fresh-keeping humid zone without setting up structures such as air-barrier and moisture-permeable membranes that can reduce humidity; of course, in a variant embodiment, it can also be set up with the same series of structures as the second fresh-keeping compartment 50B that can achieve humidity control.

[0400] The control system 90 includes a first signaler 911 and a second signaler 912.

[0401] The first signal device 911 is used to sense the opening and closing of the first door. For example, when the first door opens the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first opening signal; when the first door closes the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first closing signal.

[0402] Similarly, the second signal device 912 is used to sense the opening and closing of the second door. For example, when the second door opens the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second opening signal; when the second door closes the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second closing signal.

[0403] The controller 92 is configured to be connected to the first signaler 911, the second signaler 912, the controlled atmosphere fan 73, the controlled atmosphere damper 75 and the gas handling module 60, and to control the operation of the controlled atmosphere fan 73 and the gas handling module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0404] Furthermore, the control system 90 also includes a pattern acquisition unit 94.

[0405] The mode acquisition unit 94 responds to user input to acquire the operating mode of the second fresh-keeping compartment 50B. That is, the user can select and input the operating mode of the second fresh-keeping compartment 50B.

[0406] The pattern acquisition device 94 may be a mechanical knob, keyboard, or touch screen that is electrically connected to the controller 92, but is not limited to these.

[0407] The controller 92 is configured to control the humidity damper 33 to open or close the second air outlet 152 and control the air conditioning damper 75 to open or close the second air distribution channel 922B according to the operating mode.

[0408] In one embodiment, the operating modes include a controlled atmosphere dry zone mode, a controlled atmosphere humid zone mode, and a no-controlled atmosphere mode.

[0409] The controller is configured to: in the controlled atmosphere dry zone mode, control the gas processing module 60 and the controlled atmosphere fan 73 to turn on, the controlled atmosphere damper 75 to open the second gas distribution channel 722B, and the humidity damper 33 to open the second air outlet 152, and the cooling fan 31 to turn on.

[0410] In the controlled atmosphere and humidity zone mode, the control gas handling module 60 and the controlled atmosphere fan 73 are turned on, the controlled atmosphere damper 75 opens the second air distribution channel 722B, and the humidity damper 33 closes the second air outlet 152.

[0411] In the non-controlled atmosphere mode, the control gas processing module 60 and the controlled atmosphere fan 73 are turned on, the controlled atmosphere damper 75 closes the second gas distribution channel 722B, and the humidity damper 33 closes the second air outlet 152.

[0412] In another embodiment, after the refrigerator 100 is powered on, in the non-controlled atmosphere mode, the controller 92 controls the gas handling module 60 and the controlled atmosphere fan 73 to turn on according to the first door closing signal. That is, as long as the first door is closed, the gas handling module 60 and the controlled atmosphere fan 73 can be turned on simultaneously.

[0413] Furthermore, in the non-controlled atmosphere mode, after the gas handling module 60 and the controlled atmosphere fan 73 are turned on, the controller 92 also controls the gas handling module 60 to close and the controlled atmosphere fan 73 to turn on according to the first door opening signal. That is, when the first door is opened, the controlled atmosphere fan 73 blows the gas in the gas handling module 60 into the first preservation compartment 50A, thereby blowing away the water vapor that has accumulated in the gas handling module 60 for a long time, and avoiding excessive humidity that will cause wear and tear on the gas handling module 60.

[0414] In particular, in the non-controlled atmosphere mode, when the gas handling module 60 is turned off and the controlled atmosphere fan 73 is turned on, the speed of the controlled atmosphere fan 73 can be controlled to be greater (i.e., greater than the speed when the gas handling module 60 and the controlled atmosphere fan 73 are turned on at the same time), so that dehumidification can be accelerated by taking advantage of the short time when the first door is opened.

[0415] Conversely, after the refrigerator 100 is powered on, in the controlled atmosphere dry zone mode and the controlled atmosphere humid zone mode, the controller 92 controls the gas handling module 60 and the controlled atmosphere fan 73 to turn on according to the first door closing signal and the second door closing signal. That is to say, the gas handling module 60 and the controlled atmosphere fan 73 will only be turned on simultaneously when both the first door and the second door are closed.

[0416] In the controlled atmosphere dry zone mode and the controlled atmosphere humid zone mode, after the gas handling module 60 and the controlled atmosphere fan 73 are turned on, the controller 92 also controls the gas handling module 60 to turn off, while the controlled atmosphere fan 73 is turned on and its speed is increased, and the controlled atmosphere damper 75 is closed according to the first door opening signal.

[0417] [Third Embodiment]

[0418] Next, referring to Figure 19, the third embodiment of this application also provides a refrigerator 100, which differs from the second embodiment in that: while retaining the atmosphere damper 75B of the second gas distribution channel 722B in the second embodiment, a second atmosphere damper 75A is added to the first gas distribution channel 721A.

[0419] Thus, by adding a second air conditioning damper 75A, the opening and closing of the first air distribution channel 721A can be achieved under the control of the controller 92, thereby adjusting the supply of preservation gas to the first preservation chamber 50A.

[0420] Other technical aspects are basically the same as those in the second embodiment above, and will not be repeated here.

[0421] [Fourth Embodiment]

[0422] Referring to Figures 20 to 28, the fourth embodiment of this application provides a refrigerator 100, which differs from the first embodiment only in the specific structure and control method of the gas distribution module 70. The following will only elaborate on these differences; other identical parts will not be described again.

[0423] In this embodiment, the air distribution module 70 also includes a gravity baffle 75.

[0424] The fan 73 is equipped with two or more speed settings, that is, the fan 73 has two or more speed settings to choose from when it is running, and the speed of the fan 73 is different in different settings.

[0425] The gravity baffle 75 is disposed at the second air distribution channel 722B; and, corresponding to different gears of the fan 73, the gravity baffle 75 can rotate to different angles driven by the airflow in the second air distribution channel 722B.

[0426] Thus, by setting up a first gas distribution channel 721A and a second gas distribution channel 722B, and based on the setting of at least two speed settings of the fan 73 and the setting of the gravity baffle 75, the rotation angle of the gravity baffle 75 is different under different speed settings of the fan 73, thereby adjusting the proportion of fresh-keeping gas distributed to the second gas distribution channel 722B. In this way, when performing modified atmosphere preservation on the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, the fresh-keeping target of the two fresh-keeping compartments 50 can be achieved in the shortest time and with the highest efficiency, regardless of the current state of the refrigerator 100. This not only improves the fresh-keeping effect, but also reduces the energy consumption of the refrigerator 100 during modified atmosphere preservation.

[0427] In one embodiment, when the rotational speed of the fan 73 does not exceed the first threshold v01, the gravity baffle 75 cannot be driven to rotate by the airflow and completely blocks the second air distribution channel 722B. That is, when the fan 73 is running at a speed not exceeding v01, the gravity baffle 75 closes the second air distribution channel 722B. At this time, the preservation gas driven by the fan 73 can only enter the first preservation chamber 50A along the first air distribution channel 721A and cannot enter the second preservation chamber 50B.

[0428] When the fan 73's rotational speed reaches or exceeds the second threshold v02, the gravity baffle 75 is driven by the airflow to rotate by an angle X, and its gravity baffle 75 fully opens the second air distribution passage 722B. In other words, when the fan 73 is running at a speed of v02, the gravity baffle 75 fully opens the second air distribution passage 722B, and the rotation angle of the gravity baffle 75 reaches its maximum. That is, even if the fan 73's rotational speed is further increased, the rotation angle of the gravity baffle 75 will not change, but will remain at angle X.

[0429] At this time, the fresh-keeping gas driven by the fan 73 can only enter the first fresh-keeping chamber 50A along the first gas distribution channel 721A, but cannot enter the second fresh-keeping chamber 50B.

[0430] Correspondingly, the fan 73 is equipped with a first speed v1 and a second speed v2, where v1≤v01 and v02≤v2.

[0431] Thus, based on the above description, in the first gear position, the gravity baffle 75 cannot be driven to rotate by the airflow, and it completely blocks the second air distribution channel 722B. The fresh-keeping gas driven by the operation of the fan 73 can only enter the first fresh-keeping compartment 50A along the first air distribution channel 721A. In the second gear position, the gravity baffle 75 is driven to rotate by the airflow by an angle X, and its gravity baffle 75 completely opens the second air distribution channel 722B.

[0432] In addition, the fan 73 also has a third speed setting of v3, where v01 < v3 < v02. Thus, in the third setting, the gravity baffle 75 is driven by the airflow to rotate by an angle Y, and the gravity baffle 75 does not fully open the second air distribution passage 722B, that is, the degree to which the second air distribution passage 722B is opened is smaller compared to the second setting.

[0433] For example, when the fan 73 is in the first gear position, the gravity baffle 75 is perpendicular to the extension direction of the second air distribution channel 722B. At this time, the gravity baffle 75 remains stationary under the action of gravity, or the rotation angle is 0.

[0434] When the fan 73 is in the first gear position, the gravity baffle 75 is parallel to the extension direction of the second air distribution channel 722B, and the rotation angle X of the gravity baffle 75 is 90°.

[0435] As the fan 73 changes sequentially between the first gear, the third gear, and the second gear, the angle between the gravity baffle 75 and the extension direction of the second air distribution channel 722B decreases with each gear.

[0436] In this way, by setting the third setting, the proportion of preservation gas distributed into the second gas distribution channel 722B can be precisely controlled, which is more conducive to dealing with various complex situations in the two preservation compartments 50.

[0437] Furthermore, in one embodiment, one of the first preservation compartment 50A and the second preservation compartment 50B is located above the modified atmosphere integrated module, while the other is located to the side of the modified atmosphere integrated module. For example, optionally, as shown in the figure, the second preservation compartment 50B is located below the first preservation compartment 50A, and the integrated module consisting of the gas distribution module 70 and the gas processing module 60 is disposed to the side of the second preservation compartment 50B.

[0438] The first gas distribution channel 721A and the second gas distribution channel 722B are located in the gas control integration module, and are arranged in layers, one above the other.

[0439] Thus, the positional relationship between the two fresh-keeping compartments 50, the controlled atmosphere integrated module, and the positional relationship between the first gas distribution channel 721A and the second gas distribution channel 722B can make the overall structure of the refrigerator 100 simpler, easier to assemble, and more rationally laid out.

[0440] In one embodiment, the first gas distribution channel 721A has a first gas distribution port 721 formed on the modified atmosphere integrated module; the first gas distribution port 721 is vertically connected to the first air supply hole 51A of the first fresh-keeping compartment 50A.

[0441] Similarly, the second gas distribution channel 722B has a second gas distribution port 722 formed on the modified atmosphere integrated module, and the second gas distribution port 722 is connected to the second air supply port 51B of the second preservation compartment 50B.

[0442] In one embodiment, a gravity baffle 75 is disposed at the second air distribution port 722 and is used to shield the second air distribution port 722. As mentioned above, when the rotational speed of the fan 73 does not exceed the first threshold v01, the gravity baffle 75 is attached to the periphery of the second air distribution port 722 to completely shield the second air distribution channel 722B. When the rotational speed of the fan 73 is greater than the first threshold v01, driven by the airflow flowing out of the second air distribution port 722, the free lower end of the gravity baffle 75 rotates toward the second air supply hole 51B, thereby partially or completely opening the second air distribution channel 722B so that the preservative gas can flow out of the second air distribution port 722 and be blown into the second air supply hole 51B.

[0443] Furthermore, the first return air channel 741A has a first return air port 741 formed on the controlled atmosphere integrated module; the first return air port 741 is vertically connected to the first return air hole 52A of the first fresh-keeping compartment 50A. When the fan 73 is running, driven by the fan 73, the gas in the first fresh-keeping compartment 50A enters the first return air channel 741A sequentially through the first return air hole 52A and the first return air port 741.

[0444] Similarly, the second return air passage 722B has a second return air port 742 formed on the controlled atmosphere integrated module, which is connected to the second return air hole 52B of the second fresh-keeping compartment 50B. When the fan 73 is running, driven by the fan 73, the gas in the second fresh-keeping compartment 50B enters the second return air passage 722B sequentially through the second return air hole 52B and the second return air port 742.

[0445] Structurally, the air distribution module 70 also includes an air distribution box 71, which is disposed on the top wall of the processing box 61.

[0446] The first gas distribution channel 721A, the second gas distribution channel 722B, the first return gas channel 741A, and the second return gas channel 742B are each at least partially formed in the gas control integrated module.

[0447] In one embodiment, the first gas distribution channel 721A, the second gas distribution channel 722B, the first return gas channel 741A, and the second return gas channel 742B may be formed at least partially in the gas distribution box 71, or between the processing box 61 and the gas distribution box 71.

[0448] For example, in the embodiment shown in the figure, the top of the processing box 61 is provided with several air guide plates, and the second return air channel 742B and the second air distribution channel 722B are formed between these air guide plates; the air distribution box 71 includes a bottom cover and a top cover, the bottom cover is assembled on the processing box 61 and has a partition plate 716; the top cover is assembled on the bottom cover and its bottom is provided with several air guide ribs, and the first return air channel 741A and the first air distribution channel 721A are formed between these air guide ribs.

[0449] The first air distribution channel 721A and the second air distribution channel 722B are located on the upper and lower sides of the partition plate 716.

[0450] The first return air passage 741A is connected to the air inlet 612 of the processing box 61 through a through hole 717 opened on the partition plate 716.

[0451] In addition, the fan 73 is located between the air distribution box 71 and the processing box 61, with its air intake facing the inlet 710 and its exhaust port 731 facing the first air distribution channel 721A and the second air distribution channel 722B.

[0452] Next, referring to Figure 20, the second preservation chamber 50B includes a preservation cylinder 55 and an air guide duct 54 fixed to the outside of the preservation cylinder 55. Preservative gas at the second air supply port 51B flows through the air guide duct 54 and downwards into the interior of the second preservation chamber 50B through several openings on the preservation cylinder 55, facilitating modified atmosphere preservation of food. This structure improves the uniformity of gas distribution within the second preservation chamber 50B.

[0453] Furthermore, the refrigerator 100 also includes a first door 53A for opening and closing the first fresh-keeping compartment 50A and a second door 53B for opening and closing the second fresh-keeping compartment 50B.

[0454] Referring to Figure 27, the refrigerator 100 also includes a control system 90, which includes a first signal device 911, a second signal device 912, and a controller 92.

[0455] The first signal device 911 is used to sense the opening and closing of the first door 53A. For example, when the first door 53A opens the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first opening signal; when the first door 53A closes the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first closing signal.

[0456] Similarly, the second signal device 912 is used to sense the opening and closing of the second door 53B. For example, when the second door 53B opens the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second opening signal; when the second door 53B closes the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second closing signal.

[0457] The controller 92 is connected to the first signaler 911, the second signaler 912, the fan 73 and the gas handling module 60, and is used to control the operation of the fan 73 and the gas handling module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0458] The first signal device 911 and the second signal device 912 can be configured as any one of pressure sensors, infrared sensors, etc., or they can be integrated with the controller 92 as a single signal unit.

[0459] Referring to Figure 28, the controller 92 is configured as follows:

[0460] When it is determined that both the first door 53A and the second door 53B are closed, the control fan 73 is turned on and its speed v2 is increased, the gas handling module 60 is turned on, and the timer starts until the target running time is reached.

[0461] Within the target duration: if it is determined that both the first door 53A and the second door 53B are open, the gas handling module 60 is controlled to close and the fan 73 remains open; if it is determined that only one of the first door 53A and the second door 53B is open, the gas handling module 60 is controlled to remain running and the fan 73 is controlled to close or its speed is reduced to below the first threshold v01.

[0462] Thus, on the one hand, during the modified atmosphere preservation period, if both the first door 53A and the second door 53B are open, the gas handling module 60 is turned off (e.g., power is cut off) while the fan 73 is kept running. This can promote the gas in the gas handling module 60 to be blown into the first preservation chamber 50A and the second preservation chamber 50B, and then escape to the outside through the open first and second openings, thereby achieving the dehumidification effect and preventing the electrical components from being damaged due to excessive humidity in the gas handling module 60.

[0463] On the other hand, during modified atmosphere storage, if only the first door 53A or only the second door 53B is open, the gas processing module 60 is kept running while the fan 73 is turned off or its speed is reduced to below the first threshold v01. In this way, the gas processing module 60 continues to perform electrochemical reactions to produce preservation gas. However, the produced preservation gas is temporarily stored in the gas processing module 60 and will not be blown away by the fan 73. Thus, after restoring the state where both the first door 53A and the second door 53B are closed, the two preservation chambers can reach the preservation target in the shortest time, while avoiding frequent opening and closing of the gas processing module 60 and thus reducing its lifespan.

[0464] In one embodiment, the controller 92 is further configured to:

[0465] Within the target duration: if it is determined that both the first door 53A and the second door 53B are open, the gas handling module 60 is shut down, the fan 73 continues to run and its speed is increased to v2”>v2.

[0466] Thus, during controlled atmosphere preservation, if both the first door 53A and the second door 53B are open, the fan 73 will dehumidify at a higher speed, thereby achieving the optimal dehumidification effect by taking advantage of the short time that both the first door 53A and the second door 53B are open.

[0467] In addition, controller 92 is also configured as follows:

[0468] Within the target duration: if it is determined that the first door 53A and the second door 53B are always closed, then after the target duration, the gas processing module 60 and the fan 73 are controlled to be turned off, and after a preset interval, the fan 73 is controlled to be turned on with a speed v2', the gas processing module 60 is turned on, and the timing is restarted until the timing reaches the second target duration; wherein, v02≤v2'≤v2, preferably v2'<v2, and the second target duration is less than the target duration.

[0469] Thus, with the first door 53A and the second door 53B always closed, after the gas processing module 60 has been running for the target duration for a certain period of time, it will run for a second target duration, which will be shorter. This will maintain a stable preservation atmosphere in both preservation chambers. Furthermore, the fan 73 will rotate at a relatively low speed during the modified atmosphere preservation period of the second target duration, which will achieve the purpose of delivering preservation gas while reducing noise.

[0470] Furthermore, the controller 92 can also be used to implement various steps of the following control methods, which will not be elaborated here.

[0471] Referring again to Figure 28, an embodiment of this application also provides a control method for a refrigerator 100, the various steps of which are described below.

[0472] Step S1: After the refrigerator 100 is powered on, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed. If so, control the fan 73 to turn on and the speed v2, the gas handling module 60 to turn on, and start timing t.

[0473] For example, the first signal device 911 can be used to sense the opening and closing of the first door 53A, and the controller 92 can monitor whether the first fresh-keeping compartment 50A is closed based on this; as another example, the second signal device 912 can be used to sense the opening and closing of the second door 53B, and the controller 92 can monitor whether the second fresh-keeping compartment 50B is closed based on this.

[0474] In step S1, "if" means that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed; conversely, "if not" means that at least one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is not closed.

[0475] Step S2: Within the target duration t1 after timing, monitor whether the first preservation compartment 50A and the second preservation compartment 50B are open.

[0476] In Figure 28, step S2 is the process stage of "t≥t1" → "the first preservation room is closed and the second preservation room is closed".

[0477] Step S3: If it is detected in step S2 that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open (that is, when “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” in Figure 28 corresponding to step S2 is “all negative”), then control the gas handling module 60 to close, keep the fan 73 running, and return to step S1.

[0478] Step S4: If, in step S2, it is detected that only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is open (i.e., the situation after "the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed" when "t≥t1" is "no" in Figure 28 corresponding to step S2, except for "all yes" and "all no"), then control the gas handling module 60 to continue running, the fan 73 to be turned off, or the speed to be reduced to below the first threshold v01, such as the speed v1.

[0479] Preferably, in step S3, the speed of the fan 73 is increased to v2”>v2, that is, the speed of the fan 73 is greater than the speed of the fan 73 in step S1.

[0480] In one embodiment, the control method further includes the following steps.

[0481] Step S5: If it is detected in step S2 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is open (i.e., after “t≥t1” is “no” in Figure 28 corresponding to step S2, “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “yes”), after the target duration t1 is reached, the fan 73 and the gas processing module 60 are shut down, and the timer t' is started, proceeding to step S6.

[0482] Here, steps S2 to S5 refer to the following: if both the first preservation chamber 50A and the second preservation chamber 50B remain closed throughout the target duration t1, the gas processing module 60 and the fan 73 will be turned off after the preservation process is completed.

[0483] Step S6: Within the preset interval t2 after timing, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open.

[0484] In Figure 28, step S6 is the process stage of “t’≥t2” → “the first preservation room is closed and the second preservation room is closed”.

[0485] Step S7: If it is detected in step S6 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is open (i.e., after “t’≥t2” is “No” in Figure 28 corresponding to step S6, “the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed” is “Yes”), then when the timer reaches the preset interval t2 (i.e., when “t’≥t2” is judged as “Yes” in Figure 27), the fan 73 is turned on and the speed v2’ and the gas processing module 60 are restarted. After restarting for the second target time t3, the fan 73 and the gas processing module 60 are turned off, and after the second preset interval t4, the process returns to step S1.

[0486] Wherein, the second target duration t3 is less than the target duration t1, the second preset interval duration t4 is not less than the preset interval duration t2, v02≤v2'≤v2, and preferably v2'<v2.

[0487] In this way, while maintaining a stable preservation atmosphere in both preservation chambers, energy conservation is achieved. Furthermore, the fan speed v2' is relatively low, which reduces noise while ensuring airflow drive.

[0488] In addition, the control method further includes the following steps.

[0489] Step S8: If either or both of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are detected to be open in step S6 (i.e., when "t'≥t2" is "no" in Figure 28 corresponding to step S6 and "the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed" is "not both"), then control the gas handling module 60 to close, the fan 73 to open, and return to step S1.

[0490] This allows for the reduction of humidity in the gas handling module 60, especially around the gas handling unit 62.

[0491] Preferably, in step S8, the rotational speed of the fan 73 is increased to v2”>v2, that is, the rotational speed of the fan 73 is greater than the rotational speed of the fan 73 in step S1.

[0492] In addition, preferably, in step S4: if only the first fresh-keeping compartment 50A is detected to be open in step S2, the gas handling module 60 is controlled to continue operating, the fan 73 is turned off or its speed is reduced to below the first threshold v01, and then the process proceeds to step S41; if only the second fresh-keeping compartment 50B is detected to be open in step S2, the gas handling module 60 is controlled to continue operating, the fan 73 is turned off or its speed is reduced to below the first threshold v01, and then the process proceeds to step S42.

[0493] In step S41, after detecting that the first preservation chamber 50A and the second preservation chamber 50B are both closed, the gas handling module 60 is kept running, the fan 73 runs at a speed of v3, and the timer t is restarted. After the timer reaches the target duration t1, the fan 73 and the gas handling module 60 are shut down, and the timer t' is restarted again, proceeding to step S6. Where v01 < v3 < v02.

[0494] S42, after monitoring that the first preservation chamber 50A and the second preservation chamber 50B are completely closed, control the gas handling module 60 to keep running, the fan 73 to run at speed v2, and restart the timer t. After the timer reaches the target duration t1, shut down the fan 73 and the gas handling module 60, and restart the timer t' again, and proceed to S6.

[0495] Thus, by controlling the wind speed differently in steps S41 and S42, and considering the situation where the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are each turned on independently, the lifespan of the fan 73 and the gas handling module 60 is guaranteed, while the proportion of fresh-keeping gas distributed in each fresh-keeping compartment 50 is optimized. This allows the fresh-keeping target of the two fresh-keeping compartments 50 to be achieved in the shortest possible time while the gas handling module 60 is running, greatly improving the optimization of the distribution of fresh-keeping gas.

[0496] [Fifth Embodiment]

[0497] Next, referring to Figures 29 to 35, the fifth embodiment of this application provides a refrigerator 100, which differs from the fourth embodiment only in that the gas distribution module 70 includes two fans 73A and 73B, and a corresponding control method. The following will only elaborate on these differences; other identical parts will not be described again.

[0498] In this embodiment, the air distribution module 70 includes a first fan 73A and a second fan 73B.

[0499] The first fan 73A is used to drive the preservation gas from the gas processing module 60 to the first gas distribution channel 721A, and the second fan 73B is used to drive the preservation gas from the gas processing module 60 to the second gas distribution channel 722B.

[0500] The controller 92 of the refrigerator 100 is connected to the first fan 73A, the second fan 73B and the gas handling module 60, and is used to control the operation of the first fan 73A, the second fan 73B and the gas handling module 60.

[0501] In this way, by setting up a first gas distribution channel 721A and a second gas distribution channel 722B, and by setting up a first fan 73A and a second fan 73B, the proportion of fresh-keeping gas distributed to the first gas distribution channel 721A and the second gas distribution channel 722B can be controlled through the control of the first fan 73A and the second fan 73B. Thus, it can achieve the fresh-keeping target of the two fresh-keeping compartments 50 in the shortest time and with the highest efficiency, regardless of the different conditions of the refrigerator 100. This not only improves the fresh-keeping effect, but also reduces the energy consumption of the refrigerator 100 when using controlled atmosphere for fresh-keeping.

[0502] In one embodiment, the first fan 73A can be disposed in the first gas distribution channel 721A. Alternatively, in a variation embodiment, the first fan 73A can be disposed in the main gas distribution channel 72, and the exhaust port 731A of the first fan 73A is disposed at the intersection of the main gas distribution channel 72 and the first gas distribution channel 721A, specifically, for example, at the upstream end of the first gas distribution channel 721A. These embodiments can all achieve the effect of the first fan 73A driving the preservative gas into the first gas distribution channel 721A. Of course, the placement of the first fan 73A is not limited to these, and it can also be placed in other locations that can achieve the same effect.

[0503] Similarly, in one embodiment, the second fan 73B can be disposed in the second air distribution channel 721B. Alternatively, in a variation embodiment, the second fan 73B can be disposed within the main air distribution channel 72, and the exhaust port 731B of the second fan 73B is located at the intersection of the main air distribution channel 72 and the second air distribution channel 721B, specifically, for example, at the upstream end of the second air distribution channel 721B. These embodiments can all achieve the effect of the second fan 73B driving the preservative gas into the second air distribution channel 721B. Of course, the placement of the second fan 73B is not limited to these, and it can also be placed at other locations where the effect can be achieved.

[0504] Next, referring to Figures 30 to 32, the gas processing module 60 is provided with a first gas outlet 611, a second gas outlet and a third gas outlet 613.

[0505] The first fan 73A has an intake port 732A facing the first outlet 611, so that the freshness-preserving gas of the gas processing module 60 flows to the first fan 73A through the first outlet 611, and is then blown by the first fan 73A to the first gas distribution channel 721A.

[0506] Similarly, the air intake of the second fan 73B faces the second air outlet, so that the preservation gas of the gas processing module 60 flows to the second fan 73B through the second air outlet, and is then blown by the second fan 73B to the second air distribution channel 722B.

[0507] In one embodiment, the first air outlet 611 and the second air outlet can be connected as a whole as shown in the figure (that is, in the circular hole in Figure 30, the area corresponding to the first fan 73A constitutes the first air outlet 611, and the area corresponding to the second fan 73B constitutes the second air outlet), or they can be implemented independently of each other.

[0508] In addition, the first fan 73A and the second fan 73B are arranged roughly vertically, with the first fan 73A located above the second fan 73B.

[0509] In addition, referring to Figure 33, the refrigerator 100 also includes a first signal device 911, a second signal device 912, and a controller 92.

[0510] The first signal device 911 is used to sense the opening and closing of the first door 53A. For example, when the first door 53A opens the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first opening signal; when the first door 53A closes the first fresh-keeping compartment 50A, the first signal device 911 senses and generates a first closing signal.

[0511] Similarly, the second signal device 912 is used to sense the opening and closing of the second door 53B. For example, when the second door 53B opens the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second opening signal; when the second door 53B closes the second fresh-keeping compartment 50B, the second signal device 912 senses and generates a second closing signal.

[0512] The controller 92 is connected to the first signaler 911, the second signaler 912, the first fan 73A, the second fan 73B and the gas handling module 60, and is used to control the operation of the fan 73 and the gas handling module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0513] The first signal device 911 and the second signal device 912 can be configured as any one of pressure sensors, infrared sensors, etc., or they can be integrated with the controller 92 as a single signal unit.

[0514] In one embodiment, the first fan 73A and the second fan 73B are respectively configured with adjustable speeds. For example, the controller 92 can control the first fan 73A to operate at different speeds, or control the second fan 73B to operate at different speeds. In this way, multiple operating modes of the refrigerator 100 can be realized to cope with various conditions of the refrigerator 100, thereby improving the stability and effect of the preservation atmosphere of the first preservation compartment 50A and the second preservation compartment 50B, and also improving the lifespan of the gas handling module 60 and reducing energy consumption.

[0515] Specifically, for example, in one embodiment, the controller 92 is configured to control the first fan 73A, the second fan 73B and the gas handling module 60 to be in a sleep mode, a dehumidification mode, a dual-conditioning mode, a first single-conditioning mode and a second single-conditioning mode, based on the signals sensed by the first signaler 911 and the second signaler 912.

[0516] In the sleep mode, the first fan 73A, the second fan 73B, and the gas handling module 60 are all turned off. In other words, the sleep mode means that the refrigerator 100 does not use controlled atmosphere.

[0517] In the dehumidification mode, the gas handling module 60 is turned off, the first fan 73A operates at a speed of V1m, and the second fan 73B operates at a speed of V2m. That is to say, the dehumidification mode simply blows air into the first preservation chamber 50A and the second preservation chamber 50B.

[0518] In the dual controlled atmosphere mode, the gas handling module 60 is activated, the first fan 73A operates at speed V1, and the second fan 73B operates at speed V2. That is, the dual controlled atmosphere mode simultaneously supplies preservative gas to both the first preservation compartment 50A and the second preservation compartment 50B to perform controlled atmosphere preservation in both compartments.

[0519] In the first single-atmosphere controlled atmosphere mode, the gas handling module 60 is turned on, the first fan 73A is running, and the second fan 73B is turned off; similarly, in the second single-atmosphere controlled atmosphere mode, the gas handling module 60 is turned on, the first fan 73A is turned off, and the second fan 73B is running. That is to say, the first single-atmosphere controlled atmosphere mode supplies preservative gas only to the first preservation compartment 50A, and the second single-atmosphere controlled atmosphere mode supplies preservative gas only to the second preservation compartment 50B.

[0520] Preferably, V1 < V1m, V2 < V2m. This means that the first fan 73A and the second fan 73B operate at higher speeds in the dehumidification mode than in the dual-atmosphere control mode. Therefore, in the dehumidification mode, preservative gas is not supplied to the first preservation chamber 50A and the second preservation chamber 50B; instead, the gas within the gas handling module 60 is expelled, thus achieving a dehumidification effect and extending the service life of the gas handling module 60.

[0521] As an optional preferred solution, in the first single-atmosphere controlled mode, the first fan 73A operates at speed V1; and in the second single-atmosphere controlled mode, the second fan 73B operates at speed V2. Of course, it is not limited to this.

[0522] Furthermore, the controller 92 is also configured to control the first fan 73A, the second fan 73B and the gas handling module 60 to be in a first strong atmosphere regulation mode and a second strong atmosphere regulation mode based on the signals sensed by the first signaler 911 and the second signaler 912.

[0523] In the first intensive controlled atmosphere mode, the gas handling module 60 is activated, the first fan 73A operates at a speed of V1m, and the second fan 73B operates at a speed of V2n, where V2n < V2. That is, in the first intensive controlled atmosphere mode, the speed of the first fan 73A is higher than in the dual controlled atmosphere mode, while the speed of the second fan 73B is lower than in the dual controlled atmosphere mode; consequently, compared to the dual controlled atmosphere mode, a higher proportion of preservative gas is supplied to the first preservation compartment 50A.

[0524] Similarly, in the second intensive controlled atmosphere mode, the gas handling module 60 is activated, the first fan 73A operates at a speed of V1n, and the second fan 73B operates at a speed of V2m, where V1n < V1. That is, in the second intensive controlled atmosphere mode, the speed of the second fan 73B is higher than in the dual controlled atmosphere mode, while the speed of the first fan 73A is lower than in the dual controlled atmosphere mode; consequently, compared to the dual controlled atmosphere mode, the proportion of preservative gas supplied to the second preservation compartment 50B is higher.

[0525] Next, referring to Figure 33, the refrigerator 100 also includes a cooling fan 31, a first temperature sensor 931, and a second temperature sensor 932.

[0526] The refrigeration fan 31 drives the cold air in the refrigeration chamber to flow to the outer periphery of the first preservation compartment 50A and the second preservation compartment 50B. In this way, when the cold air flows to the outer periphery of the first preservation compartment 50A and the second preservation compartment 50B, it can achieve the cooling of the first preservation compartment 50A and the second preservation compartment 50B through indirect heat exchange.

[0527] Of course, in alternative embodiments, cold air can also flow directly into the interior of the first preservation chamber 50A and the second preservation chamber 50B. However, although this method can achieve cooling, it will cause changes in the preservation environment of the first preservation chamber 50A and the second preservation chamber 50B due to the cooling, such as causing changes in the concentration of specific gases.

[0528] The first temperature sensor 931 is disposed inside or on the outer wall of the first fresh-keeping compartment 50A and is used to sense the first temperature of the first fresh-keeping compartment 50A; similarly, the second temperature sensor 932 is disposed inside or on the outer wall of the second fresh-keeping compartment 50B and is used to sense the second temperature of the second fresh-keeping compartment 50B.

[0529] The controller 92 is also configured to work with the cooling fan 31, the first temperature sensor 931, the second temperature sensor 932 and the refrigeration system, and to control the operation of the cooling fan 31, the refrigeration system, the first fan 73A, the second fan 73B and the gas handling module 60 based on the first temperature and the second temperature.

[0530] For example, in one embodiment, the controller 92 is configured to control the cooling fan 31 and the cooling system to be in cooling mode and residual cooling mode.

[0531] In the cooling mode, both the cooling fan 31 and the cooling system are turned on, so that cold air can be generated by the cooler. At the same time, the cooling fan 31 blows the cold air to the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B to achieve cooling of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0532] In the residual cooling mode, the refrigeration fan 31 is turned on and the refrigeration system is turned off. In this way, the residual cooling capacity of the refrigerator is used to cool down the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0533] In addition, the controller 92 can also be configured to control the first fan 73A, the second fan 73B and the gas handling module 60 to a cooling mode.

[0534] In the cooling mode, the gas handling module 60 is activated, with the first fan 73A operating at speed V1k and the second fan 73B operating at speed V2k, where V1k < V1 and V2k < V2. That is, compared to the dual-atmosphere control mode, the first fan 73A and the second fan 73B operate at lower speeds in the cooling mode. This helps to address situations where the first preservation compartment 50A and the second preservation compartment 50B experience excessive temperature rise in the dual-atmosphere control mode, achieving both controlled atmosphere and stable temperature.

[0535] In one embodiment, V1n < V1k, V2n < V2k.

[0536] Furthermore, the controller 92 can also be used to implement various steps of the following control methods, such as those in Figures 34 and 35, which will not be elaborated here.

[0537] Referring again to Figure 34, an embodiment of this application also provides a control method for a refrigerator 100, the various steps of which are described below.

[0538] Step S1: After the refrigerator 100 is powered on, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed.

[0539] For example, the first signal device 911 can be used to sense the opening and closing of the first door 53A, and the controller 92 can monitor whether the first fresh-keeping compartment 50A is closed based on this; as another example, the second signal device 912 can be used to sense the opening and closing of the second door 53B, and the controller 92 can monitor whether the second fresh-keeping compartment 50B is closed based on this.

[0540] In step S1, if the determination result is negative, meaning that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are not both closed, then the hibernation mode is executed; however, if the determination result is positive, meaning that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, then the dual-atmosphere mode is executed. In other words, if any one or both of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open, the dual-atmosphere mode is not executed, and the system waits indefinitely.

[0541] Furthermore, in step S1, after executing the dual modified atmosphere mode, before both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the modified atmosphere target, it is continuously monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open.

[0542] In this application, whether it is the first preservation chamber 50A or the second preservation chamber 50B, the so-called "achieving the modified atmosphere target" means that in a preservation chamber 50, the volume ratio / concentration of a specific gas reaches the set range of the preservation chamber 50.

[0543] The determination of whether the "modified atmosphere target has been achieved" can be made by detecting the specific gas concentration sensors installed in each fresh-keeping compartment 50, or by determining the total amount of fresh-keeping gas supplied to each fresh-keeping compartment 50, or by determining the duration of the fresh-keeping gas supplied to each fresh-keeping compartment 50.

[0544] In step S2, if the first preservation chamber 50A and the second preservation chamber 50B are both open as detected in step S1, the dehumidification mode is executed, and the process returns to step S1. This promotes the blowing of gas from the gas handling module 60 into the first preservation chamber 50A and the second preservation chamber 50B, and then allows the gas to escape to the outside through the open first and second openings, thereby achieving a dehumidification effect and preventing excessive humidity within the gas handling module 60 from damaging electrical components.

[0545] Furthermore, step S2 also includes: if only the first preservation compartment 50A is detected to be open in step S1, then the second single-mode controlled atmosphere is executed, and the process returns to step S1; if only the second preservation compartment 50B is open, then the first mode of single-mode controlled atmosphere is executed, and the process returns to step S1. In this way, if only the first door 53A or only the second door 53B is open, the preservation gas is only blown into the one preservation compartment 50 that remains closed, thus avoiding meaningless controlled atmosphere operation and preventing the frequent switching of the gas processing module 60, which would shorten its lifespan.

[0546] Furthermore, step S2 includes: if it is detected in step S1 that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are completely closed, then after both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the controlled atmosphere target, the hibernation mode is executed and the timer starts, proceeding to step S3.

[0547] Next, step S3: Within the preset interval after the timeout in step S2, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open, and execute different modes according to the different monitoring results.

[0548] For example, in step S3, if it is detected that both the first preservation compartment 50A and the second preservation compartment 50B are open, then the dehumidification mode is executed, and the process returns to step S1. In this way, the dehumidification effect can also be achieved.

[0549] For example, in step S3, if it is detected that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed, the dual-atmosphere mode is executed when the preset interval is reached. In other words, if the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B have not been opened within the preset interval, a cyclical state is entered. For example, the dual-atmosphere mode is executed once every preset interval, thereby stably maintaining the stability of the fresh-keeping environment in each fresh-keeping compartment 50.

[0550] For example, in step S3, if it is detected that only the first fresh-keeping compartment 50A is open, the first strong modified atmosphere mode is executed after the first fresh-keeping compartment 50A is closed, until both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the modified atmosphere target, and then the process terminates and returns to step 1.

[0551] Similarly, if it is detected that only the second fresh-keeping compartment 50B is open, the second strong controlled atmosphere mode will be executed after the second fresh-keeping compartment 50B is closed, until both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the controlled atmosphere target, and then the process will terminate and return to step 1.

[0552] In this way, when only the first door 53A or only the second door 53B is open, the time required for both fresh-keeping compartments 50 to simultaneously reach the controlled atmosphere target can be greatly shortened by using the first and second controlled atmosphere modes, thereby improving the controlled atmosphere efficiency.

[0553] Next, referring to Figure 35, an embodiment of this application also provides another control method, which includes the following steps.

[0554] Step S100: After the refrigerator 100 is powered on, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed.

[0555] For example, the first signal device 911 can be used to sense the opening and closing of the first door 53A, and the controller 92 can monitor whether the first fresh-keeping compartment 50A is closed based on this; as another example, the second signal device 912 can be used to sense the opening and closing of the second door 53B, and the controller 92 can monitor whether the second fresh-keeping compartment 50B is closed based on this.

[0556] In step S100, if the determination result is negative, meaning that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are not both closed, then the hibernation mode is executed; however, if the determination result is positive, meaning that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, then the dual-atmosphere mode is executed. In other words, if any one or both of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open, the dual-atmosphere mode is not executed, and the system waits indefinitely.

[0557] As can be seen, the process up to step S100 corresponds to the previously described step S1, that is, the process before executing the dual controlled atmosphere mode is basically the same in steps S100 and S1.

[0558] Furthermore, in step S100, after executing the dual controlled atmosphere mode, before both the first preservation chamber 50A and the second preservation chamber 50B reach the controlled atmosphere target, the first temperature or the second temperature is continuously monitored to see if it exceeds its respective maximum threshold. For example, it is determined whether the first temperature T1 reaches the first temperature threshold T1m and whether the second temperature T2 reaches the second temperature threshold T2m.

[0559] Next, in step S200: In step S100, if T1 < T1m and T2 < T2m (that is, the process "T1 ≥ T1m, T2 ≥ T2m" in Figure 35 is judged as "all negative"), then the dual controlled atmosphere mode continues; however, if either T1 ≥ T1m or T2 ≥ T2m is true or both are true (that is, the process "T1 ≥ T1m, T2 ≥ T2m" in Figure 35 is judged as "other"), then the residual cooling mode is executed.

[0560] That is, at this time, the residual cooling of the refrigeration unit is used to attempt to cool down the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0561] Furthermore, in step S200, after executing the residual cooling mode, after the first time period, it is determined whether the first temperature T1 and the second temperature T2 continue to rise; and if neither T1 nor T2 continues to rise, the current state is maintained until the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the controlled atmosphere target and then the hibernation mode is executed; however, if either or both of T1 and T2 continue to rise, then step S300 is entered.

[0562] In step S300: the cooling mode is executed (that is, the cooling system is turned on to cool down in an attempt to cool down more quickly), and after the second time period, it is checked again whether the first temperature T1 and the second temperature T2 continue to rise.

[0563] Furthermore, if neither T1 nor T2 continues to rise, the current state is maintained until the first preservation chamber 50A and the second preservation chamber 50B reach the controlled atmosphere target, at which point the dormancy mode is executed. However, if either or both of T1 and T2 continue to rise, the cooling mode is executed, which reduces the amount of preservative gas sent into the first preservation chamber 50A and the second preservation chamber 50B, slowing down the speed of controlled atmosphere preservation to reduce the drastic impact of controlled atmosphere preservation on temperature fluctuations.

[0564] Next, maintain the cooling mode until the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the controlled atmosphere target, then execute the hibernation mode.

[0565] As can be seen from the control method above, the control method shown in Figure 35 can make great use of the residual cooling of the cooler, and combined with the setting of the cooling mode, it can achieve dual maintenance of the modified atmosphere preservation environment and the low temperature environment of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, avoiding the adverse effects of the environment rising sharply due to the modified atmosphere, and further improving the preservation effect of the refrigerator 100.

[0566] Of course, the above control method is only one of the operating processes that the mechanical structure of the refrigerator 100 of this application can realize. The refrigerator 100 of this application can also be operated in other ways. That is, based on the structure of the first fan 73A and the second fan 73B of this application, the control method of the refrigerator 100 is not limited to the preferred embodiment shown in FIG34 and FIG35, and can also be implemented as other processes.

[0567] Next, refer to the sixth embodiment in Figure 36 and the seventh embodiment in Figure 37.

[0568] [Sixth Embodiment]

[0569] The refrigerator 100 of this application, based on the gas distribution module 70, can also, as shown in Figure 36, have a first damper 75A in the first gas distribution channel 721A and a second damper 75B in the second gas distribution channel 722B, so as to open and close the corresponding gas distribution channels through these dampers, thereby controlling the supply of fresh-keeping gas to each fresh-keeping compartment 50.

[0570] [Seventh Embodiment]

[0571] Alternatively, the refrigerator 100 of this application, based on the gas distribution module 70, can also be configured with two parallel gas distribution channels, as shown in Figure 37. A first fan 73A and a first damper 75A can be installed on the first gas distribution channel 721A, and a second fan 73B and a second damper 75B can be installed on the second gas distribution channel 722B. These dampers and fans can be used to open and close the corresponding gas distribution channels and regulate the gas flow, thereby achieving precise control of the supply of preservation gas to each preservation compartment 50.

[0572] These are all further optimized designs based on the gas distribution module 70 of this application. These embodiments fully demonstrate the advantages of the concept of this application, namely, the ability to achieve airflow distribution while simplifying the pipeline, rationalizing the distribution, and facilitating assembly.

[0573] For the sixth and seventh embodiments, the other technical contents are basically the same as those of the first to fifth embodiments above, and will not be repeated.

[0574] In summary, the beneficial effects of this application are at least as follows: by setting up a gas distribution module 70 and assembling the gas distribution module 70 into the gas processing module 60 to form a modified atmosphere integrated module, and by having the gas distribution module 70 have multiple parallel gas distribution channels to supply the same type of preservation gas to each preservation compartment 50, the airflow supply to multiple preservation compartments 50 is realized based on the gas distribution module 70, which is conducive to the rational and precise distribution of preservation gas and greatly reduces the complexity of the pipeline structure. The installation and layout of the preservation supply pipeline of the preservation compartment 50 are simple. In addition, it can realize more diversified combinations of the preservation compartments 50, which greatly improves the preservation function of the refrigerator 100.

[0575] [Eighth Embodiment]

[0576] As shown in Figure 38, this eighth embodiment provides a refrigerator 100, which includes a cabinet 10, a first fresh-keeping compartment 20 and a second fresh-keeping compartment 30 located within the cabinet 10, and a controlled atmosphere integrated module 40 located between the first fresh-keeping compartment 20 and the second fresh-keeping compartment 30.

[0577] To clearly express the position and direction described in this embodiment, in this document, up and down are defined by the direction of gravity, that is, the direction of gravity is downward and the opposite direction is upward. When the user operates the items inside the refrigerator 100, the user is defined as standing in front of the refrigerator 100 and the opposite direction is behind.

[0578] Referring to Figure 39, the modified atmosphere integrated module 40 includes an oxygen-regulating chamber 41 formed inside its processing box 43, a gas processing unit 42 located within the oxygen-regulating chamber 41, and the first preservation chamber 20 and the second preservation chamber 30 both connected to the oxygen-regulating chamber 41. When preserving food, not only can the temperature of the food be lowered, but the oxygen content in the environment surrounding the food can also be adjusted. In this embodiment, under the action of the modified atmosphere integrated module 40, the oxygen content in the first preservation chamber 20 and the second preservation chamber 30 can be adjusted to be lower than the oxygen content in the atmosphere. That is, under the action of the modified atmosphere integrated module 40, an oxygen-deficient environment can be formed in the first preservation chamber 20 and the second preservation chamber 30. An oxygen-deficient environment can inhibit the aerobic respiration of fruits and vegetables, reducing the consumption of organic matter such as sugars, and can also minimize their anaerobic respiration, preventing the production of substances such as alcohol that affect the quality of fruits and vegetables.

[0579] Both the first and second fresh-keeping compartments 20 and 30 are connected to the oxygen-regulating chamber 41. Therefore, air from both compartments 20 and 30 can flow into the oxygen-regulating chamber 41. When the modified atmosphere module 40 is working, the gas processing unit 42 transfers oxygen from the oxygen-regulating chamber 41 to the outside. As the oxygen content in the oxygen-regulating chamber 41 decreases, its pressure also drops. Under these circumstances, the pressure in the first fresh-keeping compartment 20 and the oxygen-regulating chamber 41 becomes unbalanced, as does the pressure in the second fresh-keeping compartment 30 and the oxygen-regulating chamber 41. Air with higher oxygen content in the first and second fresh-keeping compartments 20 and 30 diffuses into the oxygen-regulating chamber 41, which has lower oxygen content, thus reducing the oxygen content in both compartments 20 and 30.

[0580] As can be seen, in this embodiment, no fan is required in the controlled atmosphere integrated module 40. Under the action of the gas processing unit 42, the oxygen content and air pressure in the oxygen-regulating chamber 41 will be reduced. As a result, the air with high oxygen content in the first fresh-keeping chamber 20 and the second fresh-keeping chamber 30 will diffuse into the oxygen-regulating chamber 41 with low oxygen content. In this way, the oxygen content in the first fresh-keeping chamber 20 and the second fresh-keeping chamber 30 can be reduced, and the air will not move violently in the first fresh-keeping chamber 20 and the second fresh-keeping chamber 30, which is beneficial to the preservation of food.

[0581] Continuing with Figures 40-43, the refrigerator 100 includes a first fresh-keeping box body 21 defining a first fresh-keeping compartment 20 and a second fresh-keeping box body 31 defining a second fresh-keeping compartment 30. The modified atmosphere integrated module 40 includes a processing box 43 defining an oxygen-regulating chamber 41.

[0582] A first connector 22 is formed on the first preservation box body 21, a second connector 32 is formed on the second preservation box body 31, and a third connector 44 and a fourth connector 45 are formed on the processing box 43. The first connector 22 and the third connector 44 are configured to cooperate, and the second connector 32 and the fourth connector 45 are configured to cooperate. The cooperating connectors enable reliable communication between the first preservation chamber 20 and the second preservation chamber 30 and the oxygen-regulating chamber 41. In this embodiment, the first preservation chamber 20 and the oxygen-regulating chamber 41 are specifically connected through the cooperating first connector 22 and the third connector 44, and the second preservation chamber 30 and the oxygen-regulating chamber 41 are specifically connected through the cooperating second connector 32 and the fourth connector 45.

[0583] Furthermore, the first connector 22 includes a first mating surface 221 and a first channel 222 that connects to the first preservation chamber 20 and extends through the first mating surface 221. The third connector 44 includes a third mating surface 441 and a third channel 442 that connects to the oxygen regulating chamber 41 and extends through the third mating surface 441. The first mating surface 221 and the third mating surface 441 face opposite directions and are mated together. When the first mating surface 221 and the third mating surface 441 are mated together, the first channel 222 and the third channel 442 are connected to each other and can communicate with each other.

[0584] With the above configuration, the first preservation chamber 20 and the oxygen-regulating chamber 41 can be connected through the first channel 222 and the third channel 442. The first bonding surface 221 and the third bonding surface 441 are bonded together, which can prevent air leakage at the junction of the first channel 222 and the third channel 442.

[0585] In one embodiment, the number of first connector 22 and third connector 44 is set to two. Correspondingly, the first channel 222 and the third channel 442 of one set of first connector 22 and third connector 44 constitute a gas distribution channel, and the first channel 222 and the third channel 442 of the other set of first connector 22 and third connector 44 constitute a return gas channel, thereby realizing airflow circulation between the first preservation chamber 20 and the oxygen regulation chamber 41.

[0586] Similarly, the second connector 32 includes a second mating surface 321 and a second channel 322 that connects to the second preservation compartment 30 and extends through the second mating surface 321. The fourth connector 45 includes a fourth mating surface 451 and a fourth channel 452 that connects to the oxygen regulating chamber 41 and extends through the fourth mating surface 451. The second mating surface 321 and the fourth mating surface 451 face opposite directions and are mated together. When the second mating surface 321 and the fourth mating surface 451 are mated together, the second channel 322 and the fourth channel 452 are connected to each other and can communicate with each other.

[0587] With the above configuration, the second preservation chamber 30 and the oxygen-regulating chamber 41 can be connected through the second channel 322 and the fourth channel 452. The second mating surface 321 and the fourth mating surface 451 are mated together, which can prevent air leakage at the junction of the second channel 322 and the fourth channel 452.

[0588] In one embodiment, the number of second connectors 32 and fourth connectors 45 is set to two. Correspondingly, the second channels 322 and fourth channels 452 of one set of second connectors 32 and fourth connectors 45 constitute a gas distribution channel, and the second channels 322 and fourth channels 452 of the other set of second connectors 32 and fourth connectors 45 constitute a return gas channel, thereby realizing airflow circulation between the first preservation chamber 20 and the oxygen conditioning chamber 41.

[0589] When installing the first food storage container 21, the second food storage container 31, and the oxygen control device 40, the positions of the first food storage container 21 and the second food storage container 31 are generally fixed first, and then the position of the modified atmosphere integrated module 40 is fixed. With this setup, when installing the modified atmosphere integrated module 40, after the first food storage container 21 and the second food storage container 31 are fixed, the first contact surface 221 and the third contact surface 441 are made to fit together, and the second contact surface 321 and the fourth contact surface 451 are made to fit together, thus connecting the first food storage compartment 20 and the second food storage compartment 30 to the oxygen control chamber 41.

[0590] Specifically, the first bonding surface 221 and the second bonding surface 321 are both arranged facing upwards, while the third bonding surface 441 and the fourth bonding surface 451 are both arranged facing downwards to be opposite to the first bonding surface 221 and the second bonding surface 321, respectively. This facilitates the installation of the modified atmosphere integrated module 40 between the first food storage container 21 and the second food storage container 31 from top to bottom.

[0591] Furthermore, the first mating surface 221 and the third mating surface 441 can be inclined and extended in a relatively vertical direction to increase the contact area between them, thereby better sealing the joint between the first channel 222 and the third channel 442. Similarly, the second mating surface 321 and the fourth mating surface 451 can also be inclined and extended in a relatively vertical direction.

[0592] To further prevent air leakage at the junction of the first channel 222 and the third channel 442, a first sealing gasket 432 can be provided between the first mating surface 221 and the third mating surface 441. It is conceivable that the first sealing gasket 432 has a first through hole that allows the first channel 222 and the third channel 442 to communicate.

[0593] Similarly, to prevent leakage at the junction of the second channel 322 and the fourth channel 452, a second sealing gasket 433 can be provided between the second mating surface 321 and the fourth mating surface 451. The second sealing gasket 433 has a second through hole that allows the second channel 322 and the fourth channel 452 to communicate.

[0594] In this embodiment, to prevent loosening between the first connector 22 and the third connector 44, the refrigerator 100 also includes a first fastener connecting the first connector 22 and the third connector 44, and the first connector 22 and the third connector 44 are fastened together by the first fastener.

[0595] Specifically, the first fastener is a self-tapping screw, and the third connector 44 has a first cylindrical body 443 formed on it for the self-tapping screw to drill into, thereby achieving a fastening connection between the first connector 22 and the third connector 44. After aligning the tail of the self-tapping screw with the through hole in the middle of the first cylindrical body 443, the self-tapping screw is turned, and it can move along the axial direction of the first cylindrical body 443 until its tail drills into the first connector 22. In this way, the first connector 22 and the third connector 44 are fastened together. The axis of the first cylindrical body 443 intersects the plane of the third mating surface 221. Thus, when the self-tapping screw fastens the connection between the first connector 22 and the third connector 44, it will make the first mating surface 221 and the third mating surface 441 come into close contact.

[0596] In this embodiment, the first cylindrical body 443 is located on the upper side of the third connector 44, allowing personnel to easily drive self-tapping screws in from top to bottom. Two first cylindrical bodies 443 are formed on each third connector 44. It is conceivable that in other embodiments, the first cylindrical body 443 may also be formed on the first connector 22.

[0597] Similarly, to prevent loosening between the second connector 32 and the fourth connector 45, the refrigerator 100 also includes a second fastener that connects the second connector 32 and the fourth connector 45, and the second connector 32 and the fourth connector 45 are fastened together by the second fastener.

[0598] Specifically, the second fastener is a self-tapping screw, and the fourth connector 45 has a second cylindrical body 453 formed on it for the self-tapping screw to drill into, thereby achieving a fastening connection between the second connector 32 and the fourth connector 45. After aligning the tail of the self-tapping screw with the through hole in the middle of the second cylindrical body 453, the self-tapping screw is turned, and it can move along the axial direction of the second cylindrical body 453 until it is drilled into the second connector 32. The axis of the second cylindrical body 453 intersects with the plane of the fourth mating surface 321. When the self-tapping screw fastens the connection between the second connector 32 and the fourth connector 45, it will cause the second mating surface 321 and the fourth mating surface 451 to come into close contact.

[0599] In this embodiment, the second cylinder 453 is located above the fourth connector 45, and two second cylinders 453 are formed on each fourth connector 45. It is conceivable that in other embodiments, the second cylinder 453 may also be formed on the second connector 32.

[0600] In this embodiment, at least two of the first connector 22 and the third connector 44 are provided to ensure sufficient communication area between the first fresh-keeping chamber 20 and the oxygen-regulating chamber 41. At least two of the second connector 32 and the fourth connector 45 are provided to ensure sufficient communication area between the second fresh-keeping chamber 30 and the oxygen-regulating chamber 41.

[0601] The modified atmosphere integrated module 40 has a length, width, and height. The length of the modified atmosphere integrated module 40 is greater than its width. The first preservation compartment 20 and the second preservation compartment 30 are located on both sides of the width direction of the modified atmosphere integrated module 40. Correspondingly, the third connector 44 and the fourth connector 45 are located on both sides of the width direction of the modified atmosphere integrated module 40. The third connector 44 is close to the first preservation compartment 20 to cooperate with the first connector 22 on the first preservation box body 21, and the fourth connector 45 is close to the second preservation compartment 30 to cooperate with the second connector 32 on the second preservation box body 31.

[0602] With the above configuration, when the first food preservation box 21, the second food preservation box 31, and the modified atmosphere integrated module 40 are installed in the cabinet 10 of the refrigerator 100, they can be arranged along the width direction of the cabinet 10, and the length of the modified atmosphere integrated module 40 corresponds to the space occupied in the front and rear direction of the cabinet 10. In this way, the layout of the refrigerator 100 is more reasonable.

[0603] Continuing with reference to Figures 44-46, the gas processing unit 42 includes a frame body 421, a first cathode 422 and a second cathode 423 respectively connected to opposite sides of the frame body 421. The frame body 421, the first cathode 422 and the second cathode 423 together define an inner cavity 424 for storing electrolyte. The gas processing unit 42 also includes an anode 425 located in the inner cavity 424 and between the first cathode 422 and the second cathode 423.

[0604] The first cathode 422 and the second cathode 423 will come into contact with the oxygen in the oxygen conditioning chamber 41. The oxygen will undergo a reduction reaction at the first cathode 422 and the second cathode 423, namely: O2 + 2H2O + 4e - →4OH - OH- ions - The electrolyte can pass through the first cathode 422 and the second cathode 423 into the inner cavity 424, and undergo an oxidation reaction at the anode 425, i.e., 4OH. - →O2 + 2H2O + 4e -The oxygen generated by the oxidation reaction on the anode 425 will enter the inner cavity 424. The frame body 421 has an exhaust port 4211 that connects to the inner cavity 424, and the oxygen generated by the oxidation reaction on the anode 425 will be discharged to the outside of the controlled atmosphere integrated module 40 through the exhaust port 4211.

[0605] In this embodiment, the first cathode 422 is disposed facing the first fresh-keeping chamber 20, and can fully contact and react with oxygen in the air from the first fresh-keeping chamber 20. The second cathode 423 is disposed facing the second fresh-keeping chamber 30, and can fully contact and react with oxygen in the air from the second fresh-keeping chamber 30.

[0606] The above description explains that the oxygen generated by the oxidation reaction on the anode 425 enters the inner cavity 424. Furthermore, the refrigerator 100 also includes a third preservation compartment 50 connected to the inner cavity 424. Thus, when the controlled atmosphere module 40 is working, it supplies oxygen to the third preservation compartment 50, creating an oxygen-rich environment. This oxygen-rich environment inhibits the growth and reproduction of anaerobic bacteria. Additionally, the higher concentration of oxygen allows it to combine with deoxymyoglobin on the surface of muscle to form a thicker layer of oxymyoglobin, thereby maintaining the bright red color of meat, improving its color stability, and ultimately enhancing its preservation effect.

[0607] The frame 421 of the gas processing unit 42 is provided with multiple exhaust ports 4211, which are connected to the air outlet 431 on the processing box 43. The third fresh-keeping chamber 50 is connected to the air outlet 431, and the oxygen in the inner cavity 424 is discharged to the third fresh-keeping chamber 50 through the air outlet 431.

[0608] The modified atmosphere integrated module 40 also includes a liquid level sensor 46 for detecting the liquid level of the electrolyte in the inner cavity 424. When the liquid level of the electrolyte in the inner cavity 424 is lower than the predetermined liquid level, the liquid level sensor 46 can be used to remind relevant personnel to replenish the electrolyte.

[0609] In this embodiment, the modified atmosphere integrated module 40 further includes a liquid storage box 47 located within the processing box 43, and a replenishment pipe 48 connecting the interior of the liquid storage box 47 and the inner cavity 424. The liquid storage box 47 is used to store electrolyte, and the electrolyte in the liquid storage box 47 can enter the inner cavity 424 through the replenishment pipe 48. The liquid storage box 47 is arranged around the gas processing unit 42 to make full use of the space within the processing box 43.

[0610] As shown in Figures 38-39, the refrigerator 100 includes compartments 11 formed within the cabinet 10, such as a freezer compartment, a refrigerator compartment, a variable temperature compartment, etc.

[0611] The first fresh-keeping compartment 20, the second fresh-keeping compartment 30, and the modified atmosphere integrated module 40 are all located in compartment 11. The temperature of compartment 11 is suitable for preserving the food in the first fresh-keeping compartment 20 and the second fresh-keeping compartment 30. The first fresh-keeping compartment 20 and the second fresh-keeping compartment 30 are located in compartment 11, and their temperatures will be consistent with the set temperature of compartment 11.

[0612] The front side of the compartment 11 has an opening, and the refrigerator 100 also includes a door for opening and closing the cabinet 10. When the door is closed, the compartment 11 is in a closed state. When the user opens the door, the first fresh-keeping compartment 20 and the second fresh-keeping compartment 30 are exposed to the user.

[0613] The first fresh-keeping compartment 20 has a first opening 23 on its front side, through which a user can place food into or remove food from the first fresh-keeping compartment 20. The refrigerator 100 may also include a first drawer that cooperates with the first fresh-keeping box body 21. The first drawer includes a first drawer box located within the first fresh-keeping box body 21 and a first door connected to the first drawer box and used to open and close the first opening 22. When the user pulls the first door forward, the first opening 23 opens, and the first drawer box extends out of the first fresh-keeping compartment 20. At this time, the user can place food into the first drawer box. Then, the user pushes the first door backward, and the first drawer box enters the first fresh-keeping compartment 20, while the first door closes the first opening 23.

[0614] Similarly, the front of the second fresh-keeping compartment 30 has a second opening 33, through which the user can place food into the second fresh-keeping compartment 30 or remove food from the second fresh-keeping compartment 30. The refrigerator 100 may also include a second drawer that works in conjunction with the second fresh-keeping box body 31. The second drawer includes a second drawer box located inside the second fresh-keeping box body 31 and a second door connected to the second drawer box for opening and closing the second opening 33.

[0615] [Ninth Embodiment]

[0616] This application provides a modified atmosphere integrated module.

[0617] As shown in Figures 47-55, the system includes a processing box 1, a gas processing unit disposed within the processing box 1, and at least two air passages 3 formed between the processing box 1 and the gas processing unit. The processing box 1 is provided with an air inlet 11 and a first air outlet 12. The at least two air passages 3 are connected in parallel between the air inlet 11 and the first air outlet 12. After the airflow enters the processing box 1 from the air inlet 11, it is diverted to the aforementioned at least two air passages 3 and then converges and flows out from the first air outlet 12.

[0618] The gas processing unit includes a frame having an inner cavity 23 and electrodes 24 disposed within the inner cavity 23. The inner cavity 23 is used to store electrolyte. The electrodes include an anode and a cathode that are at least partially immersed in the electrolyte. The anode is connected to the positive terminal of a power supply, and the cathode is connected to the negative terminal of a power supply. After being connected to the power supply, the cathode absorbs oxygen from the air and undergoes a reduction reaction, the reaction formula being O2 + 2H2O + 4e - →4OH - This makes the air flowing through the cathode a lean, oxygen-controlled flow, while the anode passes through OH- ions in the electrolyte. - An oxidation reaction occurs, producing oxygen gas. The reaction equation is 4OH⁻. - →O2 + 2H2O + 4e - This yields an oxygen-enriched oxygen flow.

[0619] The frame includes a first frame 21 and a second frame 22. An inner cavity 23 is formed between the first frame 21 and the second frame 22. Both the first frame 21 and the second frame 22 are provided with adsorption ports. The anode / cathode (at position 24 in Figure 49) is exposed to the air passage 3 formed between the processing box 1 and the gas processing unit through the adsorption port, so as to deliver oxygen to the air passage 3 or adsorb oxygen in the air.

[0620] In Figure 49, the electrodes 24 set at the adsorption ports of the first frame body 21 and the second frame body 22 have the same polarity, that is, they are both cathodes or both anodes, so as to increase the oxygen exchange area and improve the electrolysis efficiency.

[0621] The modified atmosphere integrated module provided in this application sets at least two air paths 3 between the processing box 1 and the gas processing unit, so that the air flowing through the air path 3 can come into more full contact with the anode / cathode (hereinafter collectively referred to as electrode 24) exposed in the air path 3, making the lifespan of electrode 24 more uniform and the reaction efficiency of gas processing unit better.

[0622] In some embodiments, the air inlet 11 and the first air outlet 12 are disposed on the same side of the processing box 1, and a baffle 13 is provided inwardly on the side of the processing box 1 where the air inlet 11 and the first air outlet 12 are disposed. The baffle 13 cooperates with the gas processing unit to divide the air passage 3 in the processing box 1 into a U-shaped air passage 3.

[0623] As shown in Figure 49, the air inlet 11 and the first air outlet 12 are located at the top of the processing box 1. The baffle 13 extends downward until it is close to one side of the gas processing unit, so that after the air enters from the air inlet 11, it cannot pass through the space at the top of the gas processing unit. Instead, it can only flow along one side of the gas processing unit due to the obstruction of the baffle 13 and the gas processing unit. The air flows through the electrode 24 set at the adsorption port, where oxygen exchange occurs. Then it flows through the gap between the bottom of the gas processing unit and the bottom of the processing box 1 to the other side of the gas processing unit. Since the electrodes of the electrodes 24 on both sides are the same, oxygen exchange occurs in the same direction. The U-shaped air path 3 improves the electrolysis efficiency.

[0624] In some embodiments, the controlled atmosphere integrated module further includes air guide ribs 4, which are disposed between the processing box 1 and the gas processing unit, dividing the U-shaped air path 3 into at least two paths. The air guide ribs 4 extend approximately along the air flow direction in the air path 3, preferably in multiple configurations, with multiple air guide ribs 4 spaced apart along the width direction of the air path 3 to guide the central airflow to the edges, maximizing the airflow through every corner and achieving uniform airflow at the electrode 24 at the adsorption port.

[0625] In some embodiments, as shown in Figures 51 and 52, the air guide rib 4 is disposed on the processing box 1 along the thickness direction of the gas processing unit. The air guide rib 4 is located on the side opposite to the side where the air inlet 11 and the first air outlet 12 are disposed. Corresponding to the air inlet 11 and the first air outlet 12 being disposed on the top of the processing box 1, the air guide rib 4 is disposed on the bottom opposite to the top. After air enters the processing box 1 through the air inlet 11, it flows downward on one side of the gas processing unit. After the air flows to the bottom, it is diverted by the diversion effect of the air guide rib 4 and turns from the bottom of the gas processing unit to the other side along the extension direction of the air guide rib 4.

[0626] In some embodiments, a boss 25 is provided at the bottom of the gas processing unit corresponding to the position of the air guide rib 4, and the gas processing unit is mounted on the air guide rib 4 via the boss 25. Providing a boss 25 at the bottom of the gas processing unit and mounting the gas processing unit on the air guide rib 4 via the boss 25 can increase the height between the bottom of the gas processing unit and the bottom of the processing box 1, allowing air to flow through.

[0627] In some embodiments, an air passage 3 is formed between the electrode 24 and the inner wall of the processing box 1, and a frame body (first frame body 21 or second frame body 22) protrudes from the electrode 24 in the thickness direction of the electrode 24. As shown above, electrodes 24 exposed to the air passage 3 are provided on both sides of the gas processing unit, that is, the space between the electrode 24 and the inner wall of the processing box 1 is part of the air passage 3. Since the frame (first frame 21 or second frame 22) is set on the four sides of the electrode 24 and protrudes from the electrode 24, as shown in Figure 50, a height difference of air passage 3 is formed at the connection between the electrode 24 and the frame (first frame 21 or second frame 22) (which can also be called a thickness difference in the thickness direction of the electrode 24). When the air flows through the difference, it will form a vortex at the difference. The air can stay at the difference for a longer time due to the vortex. The thickness difference formed between the electrode 24 and the frame (first frame 21 or second frame 22) is the edge of the electrode 24, which happens to be the place where the airflow is less. The formation of vortices at the edge of the electrode 24 can effectively solve the problem of short lifespan in the middle and long lifespan at the edge of the electrode 24 caused by less airflow at the edge of the electrode 24.

[0628] In some embodiments, the processing box 1 is further provided with an air guide plate 14, which is located near the air inlet 11 and inclined toward the gas processing unit. As shown in FIG49, the processing box 1 includes a receiving chamber, an air inlet chamber 16, a liquid replenishment chamber 17, and a water washing chamber 18. The gas processing unit is disposed in the receiving chamber. The air inlet chamber 16, the water washing chamber 18, and the liquid replenishment chamber 17 are arranged vertically from top to bottom, and are then arranged horizontally with the receiving chamber. The top of the water washing chamber 18 extends inclinedly toward the gas processing unit from top to bottom. The air inlet 11 is connected to the top of the air intake chamber 16. The aforementioned baffle 13 separates the top of the receiving chamber from the air intake chamber 16. The gap for air intake in the receiving chamber is smaller, while the air intake chamber 16 is larger. After the air enters the air intake chamber 16 from the air inlet 11, it is guided into the receiving chamber by the air guide plate 14 and the top of the inclined water washing chamber 18, so as to avoid the airflow being disturbed in the air intake chamber 16.

[0629] A guide rib 4 is also provided on the side of the washing chamber 18 near the receiving chamber. When air enters the air intake chamber 16 from the air inlet 11, it flows to the gap between the receiving chamber and the washing chamber 18 for air intake under the guidance of the guide plate 14. Here, under the action of the guide rib 4, the air is directed to both sides of the width direction of the air intake, so that the electrodes 24 can obtain a larger air volume.

[0630] In some embodiments, the air inlet 11 and the first air outlet 12 are located at the middle of the gas processing unit along its length. Since the length direction of the gas processing unit is horizontal and the width direction is vertical in the figures of this application, and the air inlet 11 and the first air outlet 12 are located at the top of the processing box 1, i.e., on the plane along the length of the gas processing unit, placing the air inlet 11 and the first air outlet 12 at the middle of the gas processing unit allows air to flow more evenly through the electrode 24.

[0631] In some embodiments, the air conditioning integrated module provided in this application further includes an air distribution module, which includes an air distribution box 5 and a fan disposed within the air distribution box 5. The air distribution box 5 is provided with a return air channel 51 communicating with the air inlet 11 and a main air distribution channel 53 communicating with the first air outlet 12. The return air channel 51 and the main air distribution channel 53 are isolated from each other. The air distribution box 5 is provided with a return air port 52 communicating with the air inlet 11 through the return air channel 51, and an air distribution port 54 communicating with the first air outlet 12 through the main air distribution channel 53. The air distribution box 5 is provided with a volute 55 at the first air outlet 12, and a fan (not shown) is disposed inside the volute 55, so that air enters the processing box 1 sequentially through the return air port 52, the return air channel 51 and the air inlet 11, passes through the U-shaped air passage 3, and is then blown out sequentially through the first air outlet 12, the main air distribution channel 53 and the air distribution port 54 under the action of the fan.

[0632] In some other embodiments, the air inlet 11 and the first air outlet 12 are respectively disposed on two opposite sides of the processing box 1. As shown in Figures 54 and 55, the left end is the air inlet 11 and the right end is the first air outlet 12. Alternatively, the left end may be the first air outlet 12 and the right end may be the air inlet 11. This application does not impose any restrictions, therefore, it is not shown in Figure 55.

[0633] The air inlet 11 and the first air outlet 12 are located at both ends along the length of the processing box 1. The gas processing unit inside the processing box 1 is spaced apart from the inner walls on both sides of the processing box 1. That is, two air paths 3 are formed between the gas processing unit and the inner walls on both sides of the processing box 1. After the air enters one end of the processing box 1 from the air inlet 11, it is divided into two air paths 3 by the spaced action of the gas processing unit itself. Finally, they converge at the other end and are blown out from the first air outlet 12. By utilizing the positional relationship between the processing box 1 and the gas processing unit, the cavity inside the processing box 1 is divided into two air paths 3, so that the air can flow evenly through the electrode 24. Moreover, the structure of the gas-controlled integrated module is simple.

[0634] The air path 3, air guide rib 4, air guide plate 14, and other specific settings for the internal air path of the gas processing module provided in this embodiment can all be applied to the aforementioned first to eighth embodiments.

[0635] This embodiment also provides a refrigeration device, including a box having a refrigeration chamber and a controlled atmosphere integrated module disposed in the box and connected to the refrigeration chamber. The controlled atmosphere integrated module is the aforementioned controlled atmosphere integrated module, used to provide a high-oxygen environment or a low-oxygen environment for the refrigeration chamber. There may be one, two or more refrigeration chambers. When multiple refrigeration chambers are provided, different refrigeration chambers may be high-oxygen chambers or low-oxygen chambers for storing food with different oxygen content requirements.

[0636] 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.

[0637] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.

Claims

1. A refrigerator, characterized in that, It includes: The container has two or more preservation compartments inside; A gas processing module for generating preservative gas, having an outlet for the preservative gas to flow out. A gas distribution module is assembled into the gas processing module and forms a modified atmosphere integrated module with the gas processing module. The gas distribution module includes two or more gas distribution channels, two of which are connected to the gas processing module, and each of the gas distribution channels is connected to the corresponding preservation compartment.

2. The refrigerator according to claim 1, characterized in that, The two gas distribution channels are respectively connected to the gas outlet.

3. The refrigerator according to claim 2, characterized in that, The gas distribution module includes a gas distribution box, and the gas distribution channel is at least partially formed in the gas distribution box or between the gas distribution box and the gas processing module; The two or more fresh-keeping compartments include a first fresh-keeping compartment and a second fresh-keeping compartment, and the two gas distribution channels include a first gas distribution channel and a second gas distribution channel arranged in parallel. The first gas distribution channel is connected to the first fresh-keeping compartment; The second gas distribution channel is connected to the second preservation compartment.

4. The refrigerator according to claim 3, characterized in that, The gas distribution module also includes a fan, which drives the preservation gas from the gas processing module to the first gas distribution channel and the second gas distribution channel.

5. The refrigerator according to claim 4, characterized in that, The specific gas adjustment volume ratio of the first preservation chamber and the second preservation chamber is A:B, and the minimum cross-sectional area ratio of the first gas distribution channel and the second gas distribution channel is C:D. Where A≥B, C≥D and C:D is between A:4B / 5 and A:6B / 5; or, A<B, C<D and C:D is between A:4B / 5 and A:6B / 5.

6. The refrigerator according to claim 4, characterized in that, The gas distribution module further includes a gravity baffle disposed at the second gas distribution channel; the second gas distribution channel has a second gas distribution port formed on the gas regulation integrated module; the gravity baffle is disposed at the second gas distribution port and is used to shield the second gas distribution port; the free lower end of the gravity baffle rotates away from the second gas distribution port under the drive of the airflow flowing out of the second gas distribution port; The fan is equipped with two or more speed settings with different speeds, and corresponding to different speed settings, the gravity baffle rotates to different angles under the drive of the airflow in the second air distribution channel.

7. The refrigerator according to claim 6, characterized in that, The fan is equipped with a first speed v1, a second speed v2, and a third speed v3, where v1≤v01, v02≤v2, and v01<v3<v02. When the fan speed does not exceed the first threshold v01, the gravity baffle cannot be driven by the airflow to rotate and completely blocks the second air distribution channel; when the fan speed reaches or exceeds the second threshold v02, the gravity baffle is driven by the airflow to rotate by an angle X and completely opens the second air distribution channel.

8. The refrigerator according to claim 4, characterized in that, The gas distribution module also includes a controlled atmosphere damper disposed at the second gas distribution channel to open and close the second gas distribution channel.

9. The refrigerator according to claim 3, characterized in that, The gas distribution module further includes a first fan and a second fan. The first fan drives the fresh-keeping gas from the gas processing module into the first gas distribution channel, and the second fan drives the fresh-keeping gas from the gas processing module into the second gas distribution channel. The gas distribution module also includes a main gas distribution channel, and the first gas distribution channel and the second gas distribution channel are both connected to the gas processing module through the main gas distribution channel. The first fan is installed in the first air distribution channel, or it is installed in the main air distribution channel and its exhaust port is located at the intersection of the main air distribution channel and the first air distribution channel; The second fan is installed in the second air distribution channel, or it is installed in the main air distribution channel and its exhaust port is located at the intersection of the main air distribution channel and the second air distribution channel.

10. The refrigerator according to claim 3, characterized in that, The gas distribution module further includes a first atmosphere damper and a second atmosphere damper. The first atmosphere damper is located at the second gas distribution channel to open and close the second gas distribution channel.

11. The refrigerator according to claim 3, characterized in that, The first fresh-keeping compartment is located above the modified atmosphere integrated module, and the second fresh-keeping compartment is located to the side of the modified atmosphere integrated module; The first and second gas distribution channels are arranged in vertical layers. The first gas distribution channel has a first gas distribution port formed on the modified atmosphere integrated module, and the first gas distribution port is connected vertically to the first gas supply hole of the first fresh-keeping compartment. The second gas distribution channel has a second gas distribution port formed on the modified atmosphere integrated module, and the second gas distribution port is connected to the second gas supply hole of the second preservation compartment.

12. The refrigerator according to claim 11, characterized in that, The top of the gas processing module is provided with several air guide plates, and the second gas distribution channel is formed between these air guide plates. The gas distribution box includes: The bottom cover, which is assembled on the gas processing module, has a horizontally placed partition plate, and the first gas distribution channel and the second gas distribution channel are distributed on the upper and lower sides of the partition plate. The top cover assembled on the bottom cover has several air guide ribs at its bottom, and the first air distribution channel is formed between these air guide ribs.

13. The refrigerator according to claim 2, characterized in that, The gas distribution module also includes several return gas channels; At least one of the preservation compartments is connected to the gas processing module via one of the gas return channels so that the gas inside the compartment can be returned to the gas processing module.

14. The refrigerator according to claim 13, characterized in that, The gas processing module includes: A gas processing unit includes a frame, an anode, and a cathode. The frame and the cathode together define an inner cavity for storing an electrolyte. The cathode is used to consume oxygen outside the gas processing unit through an electrochemical reaction to form a preservative gas in an oxygen-deficient state outside the gas processing unit. The anode is used to generate oxygen inside the gas processing unit through an electrochemical reaction to form a preservative gas in an oxygen-rich state in the inner cavity. The processing box surrounds the gas processing unit and has an outlet for the release of either oxygen-deficient or oxygen-enriched preservative gas.

15. The refrigerator according to claim 1, characterized in that, Two or more fresh-keeping compartments include a first fresh-keeping compartment and a second fresh-keeping compartment, and the modified atmosphere integrated module is located between the first fresh-keeping compartment and the second fresh-keeping compartment; The controlled atmosphere integrated module includes an oxygen-regulating chamber formed therein and a gas processing unit located within the oxygen-regulating chamber. The first and second fresh-keeping chambers are both connected to the oxygen-regulating chamber. The gas processing unit is used to transfer oxygen from the oxygen-regulating chamber to the outside of the oxygen-regulating chamber to reduce the gas pressure inside the oxygen-regulating chamber, thereby causing air from the first and second fresh-keeping chambers to flow into the oxygen-regulating chamber.

16. The refrigerator according to claim 1, characterized in that, It includes a processing box, a gas processing unit disposed within the processing box, and at least two air passages formed between the processing box and the gas processing unit. The processing box is provided with an air inlet and a first air outlet. The at least two air passages are connected in parallel between the air inlet and the first air outlet. After the airflow enters the processing box from the air inlet, it is diverted to the at least two air passages and then converges and flows out from the first air outlet.

17. The refrigerator according to claim 16, characterized in that, The air inlet and the first air outlet are located on the top surface of the processing box, and a baffle is provided on the side of the processing box where the air inlet and the first air outlet are located. The baffle works with the gas processing unit to form a U-shaped air passage. The modified atmosphere integrated module includes air guide ribs, which are arranged between the processing box and the gas processing unit to divide at least two U-shaped air paths side by side. Each U-shaped air path extends from the air inlet through one electrode of the gas handling unit, the bottom, and the other electrode to the first air outlet.

18. A control method for a refrigerator according to claim 4, characterized in that, The control method includes the following steps: S1, monitor whether both the first and second preservation chambers are closed. If so, control the fan and the gas processing module to turn on and start timing. S2, within the target duration after timing, monitor whether the first and second preservation compartments are opened; S3, If it is detected in step S2 that both the first and second preservation rooms are open, then control the gas processing module to close, keep the fan running, and return to step S1; S4. If it is detected in step S2 that only one of the first and second preservation rooms is open, then control the gas processing module to continue running, shut down the fan, and return to step S1. S5, If it is detected in step S2 that neither the first nor the second fresh-keeping room is open, the fan and the gas processing module shall be shut down after the target time is reached, and the timer shall be started to proceed to S6. S6, within a preset interval after timing, monitor whether the first and second fresh-keeping compartments are open; S7. If it is detected in step S6 that neither the first nor the second fresh-keeping room is open, then proceed to step S8 when the preset interval time is reached. S8, control the fan and the gas processing module to start again, and after running for a second target time, shut down the fan and the gas processing module, and return to step S1 after a second preset interval. S9. If it is detected in step S6 that both the first and second preservation rooms are open, then control the gas processing module to close, the fan to start, and return to step S1. S10, if it is detected in step S6 that only one of the first and second fresh-keeping rooms is open, then restart the timing and control the gas processing module to open and the fan to close. After it is detected that both the first and second fresh-keeping rooms are closed, control the gas processing module to keep running and the fan to open until it runs continuously for a third target duration, then shut down the fan and the gas processing module, and return to step S1 after a second preset interval. Wherein, the second target duration is less than the target duration, the second preset interval duration is not less than the preset interval duration, and the third target duration is between the second target duration and the target duration.

19. A control method for a refrigerator according to claim 4, characterized in that, The control method includes the following steps: S1, monitor whether both the first and second preservation chambers are closed. If so, control the fan and the gas processing module to turn on and start timing. S2, within the target duration after timing, monitor whether the first and second preservation compartments are opened; S3, If it is detected in step S2 that both the first and second preservation rooms are open, then control the gas processing module to close, keep the fan running, and return to step S1; S4. If it is detected in step S2 that only one of the first and second preservation rooms is open, then control the gas processing module to continue running, shut down the fan, and return to step S1. S5. If it is detected in step S2 that neither the first nor the second preservation room is open, the fan and the gas processing module shall be shut down after the target time is reached.

20. A control method for a refrigerator according to claim 9, characterized in that, The control method Includes the following steps, S1, monitor whether both the first and second fresh-keeping compartments are closed; If so, the gas processing module is turned on, the first fan runs at speed V1, the second fan runs at speed V2, and before the first and second preservation chambers reach the controlled atmosphere target, the first and second preservation chambers are continuously monitored to see if they are turned on, and then the process proceeds to step S2. S2, if it is detected that the first and second fresh-keeping compartments are fully open, then control the gas handling module to shut down, the first fan runs at speed V1m, the second fan runs at speed V2m, and return to step S1; where V1n < V1, V2n < V2. If only the first preservation chamber is open, then the gas handling module is turned on, the first fan is turned off, the second fan is run, and the process returns to step S1. If only the second preservation chamber is open, then the gas handling module is turned on, the first fan runs, the second fan is turned off, and the process returns to step S1. If both the first and second preservation rooms are closed, then once both the first and second preservation rooms have reached the controlled atmosphere target, the first fan, the second fan, and the gas processing module will all be shut down.

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