Refrigerator and control method thereof

Abstract

The invention provides a refrigerator and a control method thereof. The refrigerator comprises a refrigerator body, wherein a first fresh-keeping chamber and a second fresh-keeping chamber are arranged in the refrigerator body; the gas treatment module is used for forming fresh-keeping gas; the gas distribution module comprises a first gas distribution channel communicated with the gas treatment module and the first fresh-keeping chamber, a second gas distribution channel communicated with the gas treatment module and the second fresh-keeping chamber, and a fan used for driving the fresh-keeping gas to flow from the gas treatment module to the first gas distribution channel and the second gas distribution channel; the gravity separation blade is arranged at the second gas distribution channel; wherein the fan is provided with more than two gears with different rotating speeds, and corresponding to the different gears, the gravity separation blade rotates to different angles under the driving of the air flow in the second air distribution channel. In this way, the proportion of the fresh-keeping gas distributed into the second gas distribution channel can be adjusted so as to correspond to the current situations of different refrigerators.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically to a refrigerator and its control method. Background Technology

[0002] 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.

[0003] 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.

[0004] 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.

[0005] 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.

[0006] 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. Summary of the Invention

[0007] To address the aforementioned technical problems, the present invention aims to provide a refrigerator and its control method.

[0008] To achieve the above objectives, one embodiment provides a refrigerator. The refrigerator includes:

[0009] The container has a first preservation compartment and a second preservation compartment inside;

[0010] Gas processing module, which is used to generate preservative gas;

[0011] The gas distribution module includes a first gas distribution channel connecting the gas processing module and the first fresh-keeping compartment, a second gas distribution channel connecting the gas processing module and the second fresh-keeping compartment, a fan for driving the fresh-keeping gas to flow from the gas processing module to the first gas distribution channel and the second gas distribution channel, and a gravity baffle disposed at the second gas distribution channel.

[0012] The fan is equipped with two or more speed settings with different rotation speeds, and the gravity baffle rotates to different angles under the airflow drive in the second air distribution channel for different speed settings.

[0013] As an optional embodiment, the first gas distribution channel and the second gas distribution channel are arranged in parallel.

[0014] As an optional embodiment, 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.

[0015] 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 the gravity baffle completely opens the second air distribution channel.

[0016] As an optional embodiment, the fan is provided with a first speed v1 and a second speed v2, where v1≤v01 and v02≤v2;

[0017] The fan also has a third speed setting of v3, where v01 < v3 < v02.

[0018] As an optional embodiment, when the fan is in the first gear position, the gravity baffle is perpendicular to the extension direction of the second air distribution channel; as the fan changes sequentially between the first gear position, the third gear position, and the second gear position, the angle between the gravity baffle and the extension direction of the second air distribution channel decreases with each gear.

[0019] 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.

[0020] The fan is located within the public passageway.

[0021] As an optional embodiment, the gas processing module and the gas distribution module are configured as an integrated module;

[0022] One of the first preservation compartment and the second preservation compartment is located above the integrated module, and the other is located to the side of the integrated module;

[0023] The first and second gas distribution channels are located in the integrated module and are arranged in a vertical layer.

[0024] As an optional embodiment, the first air distribution channel has a first air distribution port formed on the integrated module, and the first air distribution port is vertically connected to the first air supply hole of the first preservation compartment.

[0025] The second air distribution channel has a second air distribution port formed on the integrated module, and the second air distribution port is connected to the second air supply hole of the first fresh-keeping compartment;

[0026] 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 toward the second air supply hole under the drive of the airflow flowing out of the second air distribution port.

[0027] As an optional embodiment, the gas distribution module further includes a first return gas channel connecting the gas processing module and the first fresh-keeping compartment, and a second return gas channel connecting the gas processing module and the second fresh-keeping compartment;

[0028] The first return gas channel and the first gas distribution channel are arranged on the same floor; the second return gas channel and the second gas distribution channel are arranged on the same floor.

[0029] As an optional embodiment, the gas processing module includes a processing box and a gas processing unit located inside the processing box. The processing box has an outlet for the preservation gas to flow out and an inlet for the gas to flow in. The gas processing unit is used to generate the preservation gas.

[0030] The first return air passage and the second return air passage are connected to the interior of the processing box via the air inlet, and the first air distribution passage and the second air distribution passage are connected to the interior of the processing box via the air outlet.

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

[0032] 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

[0033] The control system includes:

[0034] The first signal device is used to sense the opening and closing of the first door.

[0035] A second signal device is used to sense the opening and closing of the second door; and

[0036] 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.

[0037] To achieve the above objectives, one embodiment provides a refrigerator control method. The control method includes the following steps:

[0038] S1, monitor whether both the first and second preservation chambers are closed. If so, control the fan to turn on and the speed v2 to be turned on, the gas processing module to turn on, and start timing; wherein, the second threshold v02≤v2;

[0039] S2, within the target duration after timing, monitor whether the first and second preservation compartments are opened;

[0040] S3, If it is detected in step S2 that both the first and second preservation chambers are open, then control the gas processing module to close, keep the fan on, and return to step S1;

[0041] 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 controlled to continue operating, the fan is turned off, or the speed is reduced to below the first threshold v01; where v01 < v02.

[0042] As an optional embodiment, the control method further includes the following steps:

[0043] 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.

[0044] S6, within a preset interval after timing, monitor whether the first and second fresh-keeping compartments are open;

[0045] S7. If it is detected in step S6 that neither the first nor the second fresh-keeping room is open, then when the timer reaches the preset interval, the fan is turned on and its speed v2' and the gas processing module are turned on. After running for a second target time, the fan and the gas processing module are turned off, and after the second preset interval, the process returns to step S1; where v02≤v2'≤v2.

[0046] S8. If the first and / or second fresh-keeping compartments are detected to be open in step S6, then the gas processing module is controlled to close, the fan is controlled to start, and the process returns to step S1.

[0047] 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.

[0048] As an optional embodiment, the fan speed v2”>v2 in steps S3 and S8.

[0049] As an optional embodiment, in step S4: if the first fresh-keeping compartment is detected to be open and the second fresh-keeping compartment is detected to be closed in step S2, then the gas handling module is controlled to continue operating and the fan is turned off or its speed is reduced to below the first threshold v01, and then the process proceeds to step S41; if the second fresh-keeping compartment is detected to be open and the first fresh-keeping compartment is detected to be closed in step S2, then the gas handling module is controlled to continue operating and the fan is turned off or its speed is reduced to below the first threshold v01, and then the process proceeds to step S42.

[0050] S41, after detecting that the first and second preservation rooms are completely closed, control the gas processing module to keep running, the fan to run at speed v3, and restart the timer. After the timer reaches the target duration, shut down the fan and the gas processing module, and restart the timer again to proceed to step S6; where v01 < v3 < v02.

[0051] S42, after detecting that the first and second preservation chambers are completely closed, control the gas processing module to keep running, the fan to run at speed v2, and restart the timer. After the timer reaches the target duration, shut down the fan and the gas processing module, and restart the timer again, proceeding to step S6.

[0052] Compared with the prior art, the beneficial effects of one embodiment of the present invention are as follows: by setting a first gas distribution channel and a second gas distribution channel, and based on the setting of at least two speeds of the fan and the setting of gravity baffles, the rotation angle of the gravity baffles is different at different speeds of the fan, thereby adjusting the proportion of fresh-keeping gas distributed to the second gas distribution channel. In this way, when the first and second fresh-keeping compartments are subjected to controlled atmosphere preservation, the fresh-keeping target of the two fresh-keeping compartments can be achieved in the shortest time and with the highest efficiency, regardless of the different conditions of the refrigerator. This not only improves the fresh-keeping effect, but also reduces the energy consumption of the refrigerator during controlled atmosphere preservation. Attached Figure Description

[0053] Figure 1 This is a perspective structural diagram of a refrigerator according to an embodiment of the present invention;

[0054] Figure 2 This is a schematic block diagram of a portion of the structure of a refrigerator according to an embodiment of the present invention;

[0055] Figure 3 This is a three-dimensional structural diagram of a refrigerator according to an embodiment of the present invention;

[0056] Figure 4 This is a three-dimensional structural diagram of a portion of the refrigerator according to an embodiment of the present invention, viewed from a side-bottom perspective.

[0057] Figure 5 This is a three-dimensional structural diagram of a gas processing module and a gas distribution module according to an embodiment of the present invention;

[0058] Figure 6 This is an exploded view of a gas processing module and a gas distribution module according to an embodiment of the present invention;

[0059] Figure 7 This is a top view of a gas processing module and a gas distribution module according to an embodiment of the present invention;

[0060] Figure 8 yes Figure 7 Cross-sectional view of the middle BB line;

[0061] Figure 9 This is a three-dimensional structural view of the top cover of the air distribution box according to an embodiment of the present invention from a lower perspective.

[0062] Figure 10 yes Figure 3 Cross-sectional view of line AA in the middle;

[0063] Figure 11 This is a schematic block diagram of the structure of some components according to an embodiment of the present invention;

[0064] Figure 12 This is a flowchart of a refrigerator control method according to an embodiment of the present invention. Detailed Implementation

[0065] 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.

[0066] 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.

[0067] Spatial relative position terms used herein, such as "upper", "above", "lower", "below", etc., are for the purpose of facilitating description to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The spatial relative position terms may be intended to include different orientations of the device in use or operation other than the orientation shown in the figures. For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" other units or features will be located "above" other units or features. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.

[0068] Refer Figure 1 , an embodiment of the present invention provides a refrigerator 100.

[0069] In the illustration, the refrigerator 100 can specifically be set as a refrigerator, which can be a household refrigerator or can also be used as a commercial refrigerator.

[0070] First, the basic structure of the refrigerator 100 of the present invention will be introduced below. Specifically, the refrigerator 100 includes a cabinet 10, a door body 20, and a refrigeration system.

[0071] The cabinet 10 includes a cabinet shell 11, one or more inner liners 12, and a thermal insulation layer. Among them, the cabinet shell 11 constitutes part of the appearance of the refrigerator 100. In the accompanying drawing embodiments, the cabinet shell 11 is generally a box-like structure having a rear panel, a top panel, a bottom panel, a left side panel, and a right side panel; the one or more inner liners 12 are sleeved inside the cabinet shell 11 and are spaced apart from the cabinet shell 11 to construct a space between the cabinet shell 11 and the one or more inner liners 12; the thermal insulation layer is filled in the space. Specifically, the thermal insulation layer may include a thermal insulation board and foaming material.

[0072] The one or more inner liners 12 enclose several compartments. For example, according to the set value of the storage temperature in the compartment, it may include a freezer 102, a refrigerator compartment 101, a variable temperature compartment, etc.

[0073] The number of door bodies 20 is set to one or more. Each door body 20 is movably connected to the front side of the cabinet 10 and is used to open and close each of the compartments. For example, when the door body 20 opens a compartment, the user can take and place items in the compartment; when the door body 20 closes a compartment, the compartment is basically in a closed state, and the user cannot take and place items, and even the low-temperature gas in the compartment cannot enter or exit the compartment through the joint between the door body 20 and the cabinet 10, thereby achieving low-temperature storage.

[0074] The refrigeration system includes a refrigerator, which is used to provide cold for the refrigerator 100 to facilitate maintaining the low-temperature storage environment of each compartment.

[0075] The specific structure of the refrigeration system has various implementation manners in the art. For example, in one embodiment, the refrigeration system can be set as a thermoelectric refrigeration system, and its cooler is set as a semiconductor refrigeration sheet; in another embodiment, the refrigeration system can be set as a vapor compression refrigeration system, and its cooler is set as an evaporator. In addition, it further includes a compressor, a condenser, a throttling element, etc. The compressor, the condenser, the throttling element and the evaporator are connected in series to form a circulation pipeline. Under the action of the compressor, the refrigerant flows in the circulation pipeline and realizes heat absorption and heat release based on phase change, and then exchanges heat with air at the evaporator to prepare the cold air required by the compartment.

[0076] In the present invention, the box body 10 is further provided with a refrigeration chamber and a cold air duct.

[0077] The refrigeration chamber is equipped with the cooler. As described above, when the refrigeration system is started, the cooler can exchange heat with the air in the refrigeration chamber to make the air in the refrigeration chamber become cold air.

[0078] The cold air duct connects the refrigeration chamber and a part or all of the compartments, so that cold air circulates between the refrigeration chamber and the compartments, thereby providing cold air for the compartments to maintain the low temperature environment of the compartments.

[0079] Specifically, for example, the cold air duct can include a supply air duct and a return air duct. The supply air duct connects the refrigeration chamber and the compartment to supply cold air to flow from the refrigeration chamber along the supply air duct to the compartment; the return air duct connects the refrigeration chamber and the compartment to supply cold air to flow back from the compartment along the return air duct to the refrigeration chamber.

[0080] Of course, aiming at meeting the refrigeration requirements of each compartment, there are various feasible ways for the connection modes of the cold air duct, the refrigeration chamber and each compartment. These feasible ways are disclosed in the art and will not be elaborated in this application.

[0081] In this application, the several compartments include at least two fresh-keeping compartments 50. For example, the at least two fresh-keeping compartments 50 can include a first fresh-keeping compartment 50A and a second fresh-keeping compartment 50B.

[0082] See Figures 2 to 5 , the refrigerator 100 further includes a gas treatment module 60 and a gas distribution module 70.

[0083] The gas treatment module 60 is configured to form a fresh-keeping gas for adjusting the content of a specific gas, and the fresh-keeping gas can be supplied to each fresh-keeping compartment 50 to adjust the content of the specific gas in these fresh-keeping compartments 50.

[0084] These specific gases can be, for example, any of oxygen, nitrogen, carbon dioxide, ethylene, etc.

[0085] 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.

[0086] 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%).

[0087] The air distribution module 70 includes at least two air distribution channels, a fan 73, and a gravity baffle 75.

[0088] The at least two gas distribution channels may include a first gas distribution channel 721A and a second gas distribution channel 722B. The first gas distribution channel 721A connects the gas processing module 60 and the first preservation compartment 50A, allowing the preservation gas to flow from the gas processing module 60 to the first preservation compartment 50A; the second gas distribution channel 722B connects the gas processing module 60 and the second preservation compartment 50B, allowing the preservation gas to flow from the gas processing module 60 to the second preservation compartment 50B.

[0089] 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.

[0090] 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 application, the fan 73 is provided with two or more speed settings with different speeds. That is, when the fan 73 is running, it has two or more speed settings to choose from, and the speed of the fan 73 is different under different speed settings.

[0091] 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.

[0092] 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.

[0093] In one embodiment, the refrigerator 100 also includes a common passageway 72.

[0094] The common channel 72 connects the gas processing module 60 and the first gas distribution channel 721A. Furthermore, the common channel 72 also connects 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 common channel 72, with part of it entering the first gas distribution channel 721A and the other part entering the second gas distribution channel 722B.

[0095] Fan 73 is installed in the common passageway 72. In this way, controlled atmosphere storage for both fresh-keeping compartments 50 can be achieved with a single fan 73, which is both efficient and cost-effective.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] Correspondingly, the fan 73 is equipped with a first speed v1 and a second speed v2, where v1≤v01 and v02≤v2.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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°.

[0104] 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.

[0105] 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.

[0106] Continue to participate Figures 2 to 4 The gas processing module 60 includes a processing box 61 and a gas processing unit 62 located within the processing box 61.

[0107] The gas processing unit 62 is used to generate a preservative gas for adjusting the content of a specific gas.

[0108] For example, in one embodiment, the gas processing unit 62 is configured to prepare a preservative gas via an electrochemical reaction. However, this application is not limited thereto.

[0109] Specifically, the controlled atmosphere unit 62 includes a frame body 623, at least one anode 621, and at least one cathode 622.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] Next, participants Figures 5 to 9 The processing box 61 is provided with an air outlet 611 and a second air outlet 613.

[0119] The first gas distribution channel 721A and the second gas distribution channel 722B are connected to the interior of the processing box 61 and the exterior of the gas processing unit 62 via the gas outlet 611. In this way, oxygen-deficient preservation gas can flow from the processing box 61 into the first gas distribution channel 721A and the second gas distribution channel 722B. Correspondingly, the oxygen-deficient preservation gas flowing out of the gas outlet 611 flows to the first preservation chamber 50A and the second preservation chamber 50B, so that the first preservation chamber 50A and the second preservation chamber 50B can have an oxygen-deficient preservation function.

[0120] The second air outlet 613 is connected to the inner cavity 620 of the gas processing unit 62 through a pipe, so that the oxygen-rich preservation gas can flow out of the processing box 61 and be further connected to the third preservation compartment 50C of the refrigerator 100 through a pipe. Thus, the oxygen-rich preservation gas flowing out of the second air outlet 613 flows to the third preservation compartment 50C, so that the third preservation compartment 50C has an oxygen-rich preservation function.

[0121] Of course, in a variation embodiment, the first preservation chamber 50A and the second preservation chamber 50B may have an oxygen-enriched preservation function. Correspondingly, the first gas distribution channel 721A and the second gas distribution channel 722B may also be changed to be connected to the second gas outlet 613, so that the oxygen-enriched preservation gas flowing out of the second gas outlet 613 flows to the first preservation chamber 50A and the second preservation chamber 50B.

[0122] Furthermore, in one embodiment, the gas processing module 60 and the gas distribution module 70 are configured as an integrated module.

[0123] One of the first preservation compartment 50A and the second preservation compartment 50B is located above the integrated module, while the other is located to the side of the 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 located to the side of the second preservation compartment 50B.

[0124] The first gas distribution channel 721A and the second gas distribution channel 722B are located in the integrated module, and are arranged in layers above and below each other.

[0125] Thus, the positional relationship between the two fresh-keeping compartments 50, the 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.

[0126] In one embodiment, the first air distribution channel 721A has a first air distribution port 721 formed on the integrated module; the first air distribution port 721 is vertically connected to the first air supply hole 51A of the first fresh-keeping compartment 50A.

[0127] Similarly, the second air distribution channel 722B has a second air distribution port 722 formed on the integrated module, which is connected to the second air supply port 51B of the second freshness compartment 50B.

[0128] 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.

[0129] Furthermore, the gas distribution module 70 also includes a first return gas channel 741A and a second return gas channel 742B.

[0130] 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.

[0131] 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.

[0132] The first return air passage 741A has a first return air port 741 formed on the 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, under the drive of the fan 73, the gas in the first fresh-keeping compartment 50A enters the first return air passage 741A sequentially through the first return air hole 52A and the first return air port 741.

[0133] Similarly, the second return air passage 722B has a second return air port 742 formed on the 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.

[0134] Correspondingly, the processing box 61 is also provided with an air inlet 612.

[0135] The first return gas passage 741A and the second return gas passage 722B are connected to the interior of the processing box 61 and the exterior of the gas processing unit 62 via the air inlet 612. In this way, the gas in the first return gas passage 741A and the second return gas passage 722B can be returned to the processing box 61 so that the gas processing unit 62 can adjust the content of a specific gas (e.g., reduce the oxygen content).

[0136] Preferably, the first return gas passage 741A and the first gas distribution passage 721A are arranged on the same floor; the second return gas passage 742B and the second gas distribution passage 722B are also arranged on the same floor. Specifically, the height of the second return gas passage 742B and the second gas distribution passage 722B may be below the height of the first return gas passage 741A and the first gas distribution passage 721A.

[0137] 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.

[0138] 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 integrated module.

[0139] 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.

[0140] For example, in the illustrated embodiment, a plurality of air guiding plates are provided on the top of the processing cartridge 61, and the second air return passage 742B and the second air distribution passage 722B are formed between these air guiding plates; the air distribution cartridge 71 includes a bottom cover and a top cover, the bottom cover is assembled on the processing cartridge 61 and has a partition plate 716; the top cover is assembled on the bottom cover, and a plurality of air guiding ribs are provided at the bottom thereof, and the first air return passage 741A and the first air distribution passage 721A are formed between these air guiding ribs.

[0141] Among them, the first air distribution passage 721A and the second air distribution passage 722B are distributed on the upper and lower sides of the partition plate 716.

[0142] The first air return passage 741A is connected to the air inlet 612 of the processing cartridge 61 through a through hole 717 provided on the partition plate 716.

[0143] In addition, the blower 73 is disposed between the air distribution cartridge 71 and the processing cartridge 61, and its suction port faces the inlet 710, and its exhaust port 731 faces the first air distribution passage 721A and the second air distribution passage 722B.

[0144] Next, referring to Figure 10 , the second fresh-keeping compartment 50B includes a fresh-keeping cylinder 55 and an air guiding cylinder 54 fixed to the outside of the fresh-keeping cylinder 55. The fresh-keeping gas at the second air supply hole 51B flows through the air guiding cylinder 54 and flows downward through a plurality of openings on the fresh-keeping cylinder 55 into the interior of the second fresh-keeping compartment 50B, so as to perform controlled atmosphere fresh-keeping on food. Such a structure can improve the uniformity of the distribution of the fresh-keeping gas inside the second fresh-keeping compartment 50B.

[0145] Furthermore, the refrigerator 100 further includes a first door body 53A for opening and closing the first fresh-keeping compartment 50A and a second door body 53B for opening and closing the second fresh-keeping compartment 50B.

[0146] Referring to Figure 11 , the refrigerator 100 further includes a control system 90, and the control system 90 includes a first signaler 911, a second signaler 912 and a controller 92.

[0147] The first signaler 911 is used to sense the opening and closing of the first door body 53A. For example, when the first door body 53A opens the first fresh-keeping compartment 50A, the first signaler 911 senses and generates a first door opening signal; when the first door body 53A closes the first fresh-keeping compartment 50A, the first signaler 911 senses and generates a first door closing signal.

[0148] Similarly, the second signaler 912 is used to sense the opening and closing of the second door body 53B. For example, when the second door body 53B opens the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second door-opening signal; when the second door body 53B closes the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second door-closing signal.

[0149] The controller 92 is electrically connected to the first signaler 911, the second signaler 912, the blower 73, and the gas treatment module 60, and is configured to control the operation of the blower 73 and the gas treatment module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0150] Among them, the first signaler 911 and the second signaler 912 can be respectively set as any one of a pressure sensor, an infrared sensor, etc., and can also be a signal unit integrated with the controller 92.

[0151] See Figure 12 , the controller 92 is configured as follows:

[0152] When it is determined that both the first door body 53A and the second door body 53B are closed, control the blower 73 to start and the rotation speed v2, and the gas treatment module 60 to start, and start timing until the operation target duration.

[0153] Within the target duration: If it is determined that both the first door body 53A and the second door body 53B are open, control the gas treatment module 60 to close and the blower 73 to remain on; if it is determined that only one of the first door body 53A and the second door body 53B is open, control the gas treatment module 60 to remain operating and the blower 73 to close or the rotation speed to decrease below the first threshold v01.

[0154] In this way, on the one hand, during the controlled atmosphere fresh-keeping period, if the situation where both the first door body 53A and the second door body 53B are open occurs, the gas treatment module 60 is closed (for example, powered off) and the blower 73 is kept running, so that the gas in the gas treatment module 60 can be blown into the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, and then escape to the outside through the first opening and the second opening, thereby achieving the effect of dehumidification and avoiding damage to electrical components due to excessive humidity in the gas treatment module 60.

[0155] 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.

[0156] In one embodiment, the controller 92 is further configured to:

[0157] 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.

[0158] 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.

[0159] In addition, controller 92 is also configured as follows:

[0160] 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.

[0161] 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.

[0162] Furthermore, the controller 92 can also be used to implement various steps of the following control methods, which will not be elaborated here.

[0163] 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.

[0164] 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.

[0165] Continue to participate Figure 12 An embodiment of the present invention also provides a control method for a refrigerator 100, the various steps of which are described below.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] Step S2: Within the target duration t1 after timing, monitor whether the first preservation compartment 50A and the second preservation compartment 50B are open.

[0170] exist Figure 12 In the process, step S2 is the process stage of "t≥t1" → "the first fresh-keeping room is closed, and the second fresh-keeping room is closed".

[0171] Step S3: If both the first preservation compartment 50A and the second preservation compartment 50B are detected to be open in step S2 (i.e., the corresponding step S2) Figure 12 If "the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed" is "all negative", then the gas handling module 60 is shut down, the fan 73 continues to run, and the process returns to step S1.

[0172] Step S4: If, in step S2, only one of the first preservation compartment 50A and the second preservation compartment 50B is detected to be open (i.e., the one corresponding to step S2), Figure 12 In cases other than "all yes" or "all no" following "the first fresh-keeping compartment is closed", the gas handling module 60 is kept running, the fan 73 is turned off, or the speed is reduced to below the first threshold v01, for example, the speed v1.

[0173] 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.

[0174] In one embodiment, the control method further includes the following steps.

[0175] Step S5: If, in step S2, it is detected that neither the first preservation compartment 50A nor the second preservation compartment 50B is opened (i.e., the corresponding step S2...) Figure 12 When "the first fresh-keeping room is closed and the second fresh-keeping room is closed" is "all", 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.

[0176] 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.

[0177] 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.

[0178] exist Figure 12 In the process, step S6 is the process stage of “t’≥t2” → “the first fresh-keeping room is closed and the second fresh-keeping room is closed”.

[0179] Step S7: If, in step S6, it is detected that neither the first preservation compartment 50A nor the second preservation compartment 50B is opened (i.e., the corresponding step S6...) Figure 12 When "the first preservation compartment is closed and the second preservation compartment is closed" is "both are closed", then when the timer reaches the preset interval t2 (i.e., Figure 12 When “t’≥t2” is judged as “yes”, the control fan 73 is turned on and the speed v2’ is turned on again, the gas processing module 60 is turned on again, and after the second target time t3, the fan 73 and the gas processing module 60 are turned off, and after the second preset interval time t4, the process returns to step S1.

[0180] 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.

[0181] 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.

[0182] In addition, the control method further includes the following steps.

[0183] 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., the opening detected in step S6), Figure 12 If "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.

[0184] This allows for the reduction of humidity in the gas handling module 60, especially around the gas handling unit 62.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] The detailed descriptions listed above are merely specific descriptions of feasible implementations of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent implementations or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that, include: The container has a first preservation compartment and a second preservation compartment inside; Gas processing module, which is used to generate preservative gas; The gas distribution module includes a first gas distribution channel connecting the gas processing module and the first fresh-keeping compartment, a second gas distribution channel connecting the gas processing module and the second fresh-keeping compartment, a fan for driving the fresh-keeping gas to flow from the gas processing module to the first gas distribution channel and the second gas distribution channel, and a gravity baffle disposed at the second gas distribution channel. The fan is equipped with two or more speed settings with different rotation speeds, and the gravity baffle rotates to different angles under the airflow drive in the second air distribution channel for different speed settings.

2. The refrigerator according to claim 1, characterized in that, The first gas distribution channel and the second gas distribution channel are connected in parallel.

3. The refrigerator according to claim 1, characterized in that, 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 the gravity baffle completely opens the second air distribution channel.

4. The refrigerator according to claim 3, characterized in that, The fan is equipped with a first speed setting of v1 and a second speed setting of v2, where v1≤v01 and v02≤v2; The fan also has a third speed setting of v3, where v01 < v3 < v02.

5. The refrigerator according to claim 4, characterized in that, When the fan is in the first gear position, the gravity baffle is perpendicular to the extension direction of the second air distribution channel; as the fan changes from the first gear position to the third gear position and then to the second gear position in sequence, the angle between the gravity baffle and the extension direction of the second air distribution channel decreases with each gear.

6. The refrigerator according to claim 1, characterized in that, The refrigerator also includes a common passage that connects the gas handling module and the first gas distribution channel, as well as the gas handling module and the second gas distribution channel. The fan is located within the public passageway.

7. The refrigerator according to claim 1, characterized in that, The gas processing module and the gas distribution module are configured as an integrated module; One of the first preservation compartment and the second preservation compartment is located above the integrated module, and the other is located to the side of the integrated module; The first and second gas distribution channels are located in the integrated module and are arranged in a vertical layer.

8. The refrigerator according to claim 7, characterized in that, The first air distribution channel has a first air distribution port formed on the integrated module, and the first air distribution port is connected vertically to the first air supply hole of the first preservation compartment. The second air distribution channel has a second air distribution port formed on the integrated module, and the second air distribution port is connected to the second air supply hole of the first fresh-keeping compartment; 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 toward the second air supply hole under the drive of the airflow flowing out of the second air distribution port.

9. The refrigerator according to claim 7, characterized in that, The gas distribution module further includes a first return gas channel connecting the gas processing module and the first fresh-keeping compartment, and a second return gas channel connecting the gas processing module and the second fresh-keeping compartment; The first return gas channel and the first gas distribution channel are arranged on the same floor; The second return gas passage and the second distribution gas passage are arranged on the same floor.

10. The refrigerator according to claim 9, characterized in that, The gas processing module includes a processing box and a gas processing unit located inside the processing box. The processing box has an outlet for the preservation gas to flow out and an inlet for the gas to flow in. The gas processing unit is used to generate the preservation gas. The first return air passage and the second return air passage are connected to the interior of the processing box via the air inlet, and the first air distribution passage and the second air distribution passage are connected to the interior of the processing box via the air outlet.

11. The refrigerator according to claim 1, characterized in that, The refrigerator also includes: 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 The control system includes: The first signal device is used to sense the opening and closing of the first door. A second signal device is used to sense the opening and closing of the second door; and 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.

12. A control method for a refrigerator according to any one of claims 1 to 11, 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 to turn on and the speed v2 to be turned on, the gas processing module to turn on, and start timing; wherein, the second threshold v02≤v2; 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 chambers are open, then control the gas processing module to close, keep the fan on, and return to step S1; 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 controlled to continue operating, the fan is turned off, or the speed is reduced to below the first threshold v01; where v01 < v02.

13. The refrigerator control method according to claim 12, characterized in that, The control method further includes the following steps: 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 when the timer reaches the preset interval, the fan is turned on and its speed v2' and the gas processing module are turned on. After running for a second target time, the fan and the gas processing module are turned off, and after the second preset interval, the process returns to step S1; where v02≤v2'≤v2. S8. If the first and / or second fresh-keeping compartments are detected to be open in step S6, then the gas processing module is controlled to close, the fan is controlled to start, and the process returns to step S1. 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.

14. The refrigerator control method according to claim 13, characterized in that, In steps S3 and S8, the fan speed v2” > v2.

15. The refrigerator control method according to claim 13, characterized in that, Step S4: If the first fresh-keeping compartment is detected to be open and the second fresh-keeping compartment is detected to be closed in step S2, then control the gas handling module to keep running, and control the fan to be turned off or reduce the speed to below the first threshold v01, and then proceed to step S41; If the second fresh-keeping compartment is detected to be open and the first fresh-keeping compartment is detected to be closed in step S2, then control the gas handling module to keep running, and control the fan to be turned off or reduce the speed to below the first threshold v01, and then proceed to step S42; S41, after detecting that the first and second preservation rooms are completely closed, control the gas processing module to keep running, the fan to run at speed v3, and restart the timer. After the timer reaches the target duration, shut down the fan and the gas processing module, and restart the timer again to proceed to step S6; where v01 < v3 < v02. S42, after detecting that the first and second preservation chambers are completely closed, control the gas processing module to keep running, the fan to run at speed v2, and restart the timer. After the timer reaches the target duration, shut down the fan and the gas processing module, and restart the timer again, proceeding to step S6.

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