Refrigeration appliance and control method thereof

Abstract

The invention provides a refrigeration appliance and a control method thereof. The refrigeration appliance comprises a box body, wherein a first fresh-keeping chamber and a second fresh-keeping chamber are arranged in the box body; the gas treatment module is used for forming fresh-keeping gas; the first gas distribution channel is communicated with the gas treatment module and the first fresh-keeping chamber, so that fresh-keeping gas flows into the first fresh-keeping chamber from the gas treatment module; the second gas distribution channel and the first gas distribution channel are arranged in parallel, and the second gas distribution channel is communicated with the gas treatment module and the second fresh-keeping chamber, so that fresh-keeping gas flows into the second fresh-keeping chamber from the gas treatment module; the first air door is used for opening and closing the first air distribution channel; and the second air door is used for opening and closing the second air distribution channel. Therefore, not only can the fresh-keeping effect be improved, but also the energy consumption of the refrigeration appliance during fresh-keeping air conditioning can be reduced.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more specifically to a refrigeration appliance 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 storage, a common technology in refrigeration appliances 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 refrigeration appliances with modified atmosphere storage currently suffer from problems such as unreasonable supply of preservation gas, low efficiency, and complex piping. Summary of the Invention

[0007] To address the aforementioned technical problems, the purpose of this application is to provide a refrigeration appliance and its control method.

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

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

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

[0011] The first gas distribution channel connects the gas processing module and the first preservation chamber, so that preservation gas can flow from the gas processing module into the first preservation chamber.

[0012] The second gas distribution channel is arranged in parallel with the first gas distribution channel and connects to the gas processing module and the second preservation chamber, so that the preservation gas flows from the gas processing module into the second preservation chamber.

[0013] The first damper, used to open and close the first air distribution passage; and

[0014] The second damper is used to open and close the second air distribution passage.

[0015] As an optional embodiment, the refrigeration appliance further includes an airflow driving mechanism for driving the preservation gas from the gas processing module to the first gas distribution channel and the second gas distribution channel.

[0016] As an optional embodiment, the refrigeration appliance includes a gas distribution box, which is assembled on the outside of the gas handling module and forms an integrated module with the gas handling module;

[0017] The airflow drive mechanism, the first damper, the second damper, the first air distribution channel, and the second air distribution channel are integrated in the air distribution box or the integrated module.

[0018] As an optional embodiment, the refrigeration appliance has a sleep mode, a dehumidification mode, and a dual-atmosphere control mode;

[0019] In the sleep mode, both the airflow drive mechanism and the gas handling module are turned off;

[0020] In the dehumidification mode, the gas handling module is turned off, the first damper and the second damper are opened, and the airflow drive mechanism operates at the first operating capacity.

[0021] In the dual-atmosphere mode, the gas processing module is activated, the first damper and the second damper are opened, and the airflow drive mechanism operates at a second operating capacity; the second operating capacity is less than the first operating capacity.

[0022] As an optional embodiment, the refrigeration appliance further includes a common channel, through which both the first gas distribution channel and the second gas distribution channel are connected to the gas processing module;

[0023] The airflow drive mechanism includes a first fan and a second fan.

[0024] The first fan is installed in the first air distribution channel, or it is installed in the common channel and its exhaust port is located at the intersection of the common channel and the first air distribution channel;

[0025] The second fan is installed in the second air distribution channel, or it is installed in the common channel and its exhaust port is located at the intersection of the common channel and the second air distribution channel.

[0026] As an optional embodiment, the operation of the airflow drive mechanism with a first operating capacity is characterized by the first fan operating at a speed of V1m and the second fan operating at a speed of V2m.

[0027] The operation of the airflow drive mechanism with the second operating capability is characterized by the first fan operating at a speed of V1 and the second fan operating at a speed of V2.

[0028] Where V1 < V1m, V2 < V2m.

[0029] As an optional embodiment, the refrigeration appliance further includes a common channel, through which both the first gas distribution channel and the second gas distribution channel are connected to the gas processing module;

[0030] The airflow driving mechanism is a fan installed in the common channel. The fan drives a portion of the preservation gas from the gas processing module to the first gas distribution channel and another portion of the preservation gas from the gas processing module to the second gas distribution channel.

[0031] As an optional embodiment, the operation of the airflow drive mechanism with the first operating capability is characterized by the fan operating at a speed of V1m;

[0032] The operation of the airflow drive mechanism with the second operating capability is characterized by the fan operating at a speed of V1.

[0033] Where V1 < V1m.

[0034] As an optional embodiment, the refrigeration appliance further includes a first door for opening and closing the first fresh-keeping compartment, a second door for opening and closing the second fresh-keeping compartment, a first signal device for sensing the opening and closing of the first door, and a second signal device for sensing the opening and closing of the second door.

[0035] The controller is also configured to be electrically connected to the first signal device and the second signal device, and to control the operation of the first damper, the second damper, the airflow drive mechanism and the gas handling module according to the signals sensed by the first signal device and the second signal device.

[0036] As an optional embodiment, the refrigeration appliance further includes a mode collector that responds to user input to collect the respective operating modes of the first and second fresh-keeping compartments.

[0037] The controller is configured to control the operation of the first damper, the second damper, the airflow drive mechanism, and the gas processing module according to the operating mode collected by the mode collector.

[0038] To achieve the above objectives, one embodiment provides a control method for a refrigeration appliance, the control method comprising the following steps:

[0039] S1, monitor whether both the first and second fresh-keeping compartments are closed;

[0040] S2, if step S1 determines that it is yes, then control the gas processing module to open, the first damper and the second damper to open, and the airflow drive mechanism to operate at the second operating capacity;

[0041] S3, before both the first and second fresh-keeping compartments reach the controlled atmosphere target, continuously monitor whether the first and second fresh-keeping compartments are open;

[0042] S4, if the monitoring result in step S2 is fully open, then control the gas processing module to close, the first damper and the second damper to open, the airflow drive mechanism to operate at the first operating capacity, and return to step S1; wherein, the first operating capacity is greater than the second operating capacity;

[0043] S5, if it is detected in step S2 that only the first preservation chamber or only the second preservation chamber is open, then control the gas processing module to open and the airflow drive mechanism to close.

[0044] As an optional embodiment, the airflow driving mechanism is a fan that drives the preservative gas into the first gas distribution channel and the second gas distribution channel;

[0045] The first operating capacity is the fan speed V1m, and the second operating capacity is the fan speed V1 < V1m.

[0046] As an optional embodiment, the airflow driving mechanism includes a first fan that drives the preservative gas to flow into the first gas distribution channel and a second fan that drives the preservative gas to flow into the second gas distribution channel.

[0047] The first operating capacity is when the first fan operates at a speed of V1m and the second fan operates at a speed of V2m; the second operating capacity is when the first fan operates at a speed of V1 and the second fan operates at a speed of V2; V1 < V1m, V2 < V2m.

[0048] In step S5: If it is detected in step S2 that only the first fresh-keeping chamber is open, then control the gas processing module to open, the first fan and the second fan to close, and after the first fresh-keeping chamber is closed, control the gas processing module to open, the first damper and the second damper to open, the first fan to run at speed V1k, and the second fan to run at speed V2n.

[0049] If it is detected in step S2 that only the second fresh-keeping chamber is open, then the gas processing module is controlled to open, the first fan and the second fan are closed, and after the second fresh-keeping chamber is closed, the gas processing module is controlled to open, the first damper and the second damper are opened, the first fan runs at a speed of V1n, and the second fan runs at a speed of V2k.

[0050] V1n<V1<V1k≤V1m, V2n<V2<V2k≤V2m.

[0051] To achieve the above objectives, one embodiment provides a control method for a refrigeration appliance, the control method comprising the following steps:

[0052] S11, determine whether the closing time of the first and second preservation compartments has reached the first threshold Tn; if so, proceed to step S12;

[0053] S12, control the airflow drive mechanism to open, and the first damper and the second damper alternately open for a first duration T1, then control the airflow drive mechanism to close, and the gas processing module to run for a second duration T2 before closing, start timing from zero, and proceed to step S13;

[0054] S13, after the timer reaches the third duration T3, determine whether the closing duration of the first and second preservation chambers has reached the second threshold Tm;

[0055] S14, if step S13 determines no, then return to step S11; if step S13 determines yes, then control the gas processing module to open, the airflow drive mechanism to open, the first damper to open, and the second damper to open.

[0056] Compared with the prior art, the beneficial effect of one embodiment of this application is that: by setting a first gas distribution channel and a second gas distribution channel, and setting a first damper and a second damper, the proportion of fresh-keeping gas distributed to the first gas distribution channel and the second gas distribution channel can be precisely controlled by controlling the first damper and the second damper. In this way, 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 refrigeration appliance. This not only improves the fresh-keeping effect, but also reduces the energy consumption of the refrigeration appliance when using controlled atmosphere for fresh-keeping. Attached Figure Description

[0057] Figure 1 This is a perspective structural diagram of the refrigeration appliance according to the first embodiment of this application;

[0058] Figure 2 This is an exploded perspective view of a portion of the structure of the refrigeration appliance according to the first embodiment of this application;

[0059] Figure 3 This is an exploded perspective view of a portion of the structure of the refrigeration appliance according to the first embodiment of this application, viewed from a side-below angle.

[0060] Figure 4 This is a schematic block diagram of a portion of the structure of a refrigeration appliance according to the first embodiment of this application;

[0061] Figure 5 This is a three-dimensional structural diagram of the gas processing module and gas distribution module according to the first embodiment of this application;

[0062] Figure 6 This is an exploded view of the gas handling module and gas distribution module of the first embodiment of this application;

[0063] Figure 7 This is an exploded view of the gas handling module and gas distribution module of the first embodiment of this application from a side-bottom perspective;

[0064] Figure 8 This is a top view of the gas handling module and gas distribution module of the first embodiment of this application;

[0065] Figure 9 yes Figure 8 Cross-sectional view of line AA in the middle;

[0066] Figure 10 yes Figure 8 Cross-sectional view of the middle BB line;

[0067] Figure 11 yes Figure 2 Cross-sectional view of the CC line;

[0068] Figure 12 This is a schematic block diagram of the structure of some components of the first embodiment of this application;

[0069] Figure 13 This is a flowchart of the control method for a refrigeration appliance according to the first embodiment of this application;

[0070] Figure 14 This is another flowchart of the control method for a refrigeration appliance according to the first embodiment of this application;

[0071] Figure 15 This is a schematic block diagram of a portion of the structure of a refrigeration appliance according to the second embodiment of this application;

[0072] Figure 16It is a top view of a partial structure of a gas treatment module and a gas distribution module according to the second embodiment of the present application;

[0073] Figure 17 It is Figure 16 a sectional view taken along line B - B in

[0074] Figure 18 It is a structural schematic block diagram of some components according to the second embodiment of the present application. Specific Embodiments

[0075] The present application will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included within the protection scope of the present application.

[0076] In each illustration of the present application, for the convenience of illustration, certain dimensions of the structure or part are exaggerated relative to other structures or parts. Therefore, it is only used to illustrate the basic structure of the subject matter of the present application.

[0077] 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 may be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein are accordingly interpreted.

[0078] Refer Figure 1 , an embodiment of the present application provides a refrigeration appliance 100.

[0079] In the illustration, the refrigeration appliance 100 may specifically be set as a refrigeration appliance, which may be a household refrigeration appliance or may also be used as a commercial refrigeration appliance.

[0080] First, the basic structure of the refrigeration appliance 100 of the present application will be introduced below. Specifically, the refrigeration appliance 100 includes a cabinet 10, a door body 20, and a refrigeration system.

[0081] The housing 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 refrigeration appliance 100. In the embodiment shown in the drawings, the shell 11 is generally a box-like structure with a back panel, top panel, bottom panel, left side panel, and 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.

[0082] 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.

[0083] 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.

[0084] The refrigeration system includes a cooler for providing cooling capacity to the refrigeration appliance 100 in order to maintain a low-temperature storage environment in each of the compartments.

[0085] The specific structure of the refrigeration system can be implemented in various ways in the art. For example, in one embodiment, the refrigeration system can be configured as a thermoelectric refrigeration system, and its cooler can be configured as a semiconductor refrigeration chip; in another embodiment, the refrigeration system can be configured as a vapor compression refrigeration system, and its cooler can be 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.

[0086] In this application, the enclosure 10 is also provided with a refrigeration chamber and a cold air duct.

[0087] 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.

[0088] The cold air duct is connected to the refrigeration chamber and a part or all of the compartments, so as to provide cold air for the compartments to maintain a low-temperature environment in the compartments.

[0089] Specifically, for example, the cold air duct may include a supply air duct and a return air duct. The supply air duct is connected to the refrigeration chamber and the compartment, so that cold air flows from the refrigeration chamber along the supply air duct to the compartment; the return air duct is connected to the refrigeration chamber and the compartment, so that cold air flows from the compartment along the return air duct back to the refrigeration chamber.

[0090] Of course, aiming to meet the refrigeration requirements of each compartment, there are various feasible connection methods for the cold air duct, the refrigeration chamber, and each compartment. These feasible methods are disclosed in this field and will not be elaborated in this application.

[0091] Refer Figure 2 , the refrigeration appliance 100 further includes at least two fresh-keeping chambers 50 arranged in the compartment 101. For example, the at least two fresh-keeping chambers 50 may include a first fresh-keeping chamber 50A and a second fresh-keeping chamber 50B.

[0092] The supply air duct has a plurality of air supply outlets, and these air supply outlets are distributed on the outer periphery of the fresh-keeping chamber 50, so that the cold air in the refrigeration chamber flows to the fresh-keeping chamber 50 through the supply air duct, thereby cooling the inside of the fresh-keeping chamber 50 (such as the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B) to maintain a low-temperature environment.

[0093] Refer Figures 2 to 4 , the refrigeration appliance 100 further includes a gas treatment module 60 and a gas distribution module 70.

[0094] 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 chamber 50 to adjust the content of the specific gas in these fresh-keeping chambers 50.

[0095] These specific gases may be, for example, any one of oxygen, nitrogen, carbon dioxide, ethylene, etc.

[0096] After the fresh-keeping gas is supplied to a fresh-keeping chamber 50, the volume ratio of the specific gas in the fresh-keeping chamber 50 changes relative to the composition of the air. After the volume ratio of the specific gas reaches the target range, the fresh-keeping effect of the food stored in the fresh-keeping chamber 50 can be improved.

[0097] Among them, the composition of air usually contains: the volume fraction of nitrogen is about 78%, the volume fraction of oxygen is about 21%, the volume fraction of noble gases (helium, neon, argon, krypton, xenon, radon) is about 0.934%, the volume fraction of carbon dioxide is about 0.04%, and the volume fraction of other substances (such as water vapor, impurities, etc.) is about 0.02%.

[0098] The air distribution module 70 includes at least two air distribution channels, a first damper 75A, and a second damper 75B.

[0099] 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 chamber 50A, allowing the preservation gas to flow from the gas processing module 60 to the first preservation chamber 50A; the second gas distribution channel 722B connects the gas processing module 60 and the second preservation chamber 50B, allowing the preservation gas to flow from the gas processing module 60 to the second preservation chamber 50B.

[0100] 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 chamber 50A and the second preservation chamber 50B.

[0101] The first damper 75A is used to open and close the first air distribution channel 721A. That is, the first air distribution channel 721A can be closed or opened through the first damper 75A.

[0102] Similarly, the second damper 75B is used to open and close the second air distribution passage 722B.

[0103] In this way, by setting up a first gas distribution channel 721A and a second gas distribution channel 722B, and setting up a first damper 75A and a second damper 75B, this application can achieve precise control of the proportion of preservation gas distributed to the first gas distribution channel 721A and the second gas distribution channel 722B through the control of the first damper 75A and the second damper 75B. Thus, it can achieve the preservation target of the two preservation chambers 50 in the shortest time and with the highest efficiency, regardless of the different conditions of the refrigeration appliance 100. This not only improves the preservation effect, but also reduces the energy consumption of the refrigeration appliance 100 during the preservation atmosphere control.

[0104] Furthermore, in one embodiment, the gas distribution module 70 further includes an airflow driving mechanism for driving the preservation gas from the gas processing module 60 to the first gas distribution channel 721A and the second gas distribution channel 722B.

[0105] In this embodiment, the airflow drive mechanism includes a first fan 73A and a second fan 73B.

[0106] 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.

[0107] In one embodiment, the reference Figures 4 to 9 The refrigeration appliance 100 also includes a public passageway 72.

[0108] 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. That is, both the first gas distribution channel 721A and the second gas distribution channel 722B are connected to the gas processing module 60 through the common channel 72, so that the preservation gas at the gas processing module 60 enters the first gas distribution channel 721A and the second gas distribution channel 722B through the common channel 72.

[0109] 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 common channel 72, and the exhaust port 731A of the first fan 73A is located at the intersection of the common 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.

[0110] 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 in the common channel 72, and the exhaust port 731B of the second fan 73B is located at the intersection of the common 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 in other locations where the effect can be achieved.

[0111] Next, participants Figures 6 to 10 The gas processing module 60 is provided with a first gas outlet 611, a second gas outlet and a third gas outlet 613.

[0112] 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.

[0113] 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.

[0114] In one embodiment, the first air outlet 611 and the second air outlet can be connected as a whole as shown in the figure, or they can be implemented independently of each other.

[0115] Further reading Figure 3 The gas processing module 60 includes a processing box 61 and a gas processing unit 62 located within the processing box 61.

[0116] The gas processing unit 62 is used to generate a preservative gas for adjusting the content of a specific gas.

[0117] 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.

[0118] Specifically, the gas processing unit 62 includes a frame body 623, at least one anode 621, and at least one cathode 622.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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 disconnected from the anode 621 and the negative terminal of the power supply is disconnected from the cathode 622, that is, the power supply stops supplying power to the gas processing unit 62.

[0123] The power source can be a power source installed in the refrigeration appliance 100, such as a battery pack, or it can be an external power source for the refrigeration appliance 100.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] Furthermore, in the illustrated embodiment, the first air outlet 611 and the second air outlet mentioned above are specifically formed on the processing box 61.

[0128] Thus, the first gas distribution channel 721A connects the interior of the processing box 61 and the exterior of the gas processing unit 62 via the first gas outlet 611, and the second gas distribution channel 722B connects the interior of the processing box 61 and the exterior of the gas processing unit 62 via the second gas outlet. 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, thereby enabling the first preservation chamber 50A and the second preservation chamber 50B to have an oxygen-deficient preservation function.

[0129] Correspondingly, the third air outlet 613 is connected to the inner cavity 620 of the gas processing unit 62 through a pipe, so that the oxygen-enriched preservation gas can flow out of the processing box 61 and be further connected to the third preservation chamber 50C of the refrigeration appliance 100 through a pipe, so that the oxygen-enriched preservation gas flowing out of the third air outlet 613 flows to the third preservation chamber 50C, thus the third preservation chamber 50C has an oxygen-enriched preservation function.

[0130] 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 third air outlet 613. For example, the air intake 732A of the first fan 73A faces the third air outlet 613, and the air intake of the second fan 73B also faces the third air outlet 613, so that the oxygen-enriched preservation gas flowing out of the third air outlet 613 flows to the first preservation chamber 50A and the second preservation chamber 50B.

[0131] Furthermore, in one embodiment, the gas distribution module 70 also includes a gas distribution box 71, which is fixedly assembled on the outside of the gas processing module 60, specifically disposed on the top wall of the processing box 61, but the placement is not limited thereto.

[0132] The gas handling module 60 and the gas distribution box 71 constitute an integrated module; the common channel 72, the airflow driving mechanism (in this embodiment, the first fan 73A and the second fan 73B), the first damper 75A, the second damper 75B, the first gas distribution channel 721A, and the second gas distribution channel 722B are integrated in the gas distribution box 71 or the integrated module.

[0133] 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.

[0134] The air distribution box 71 includes a bottom cover and a top cover 715. The bottom cover is assembled on the processing box 61 and has a partition plate 716. The top cover 715 is assembled on the bottom cover and has a plurality of air guide ribs at its bottom. The first return air channel 741A and the first air distribution channel 721A are formed between these air guide ribs.

[0135] 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.

[0136] Correspondingly, the first fan 73A and the second fan 73B are arranged roughly vertically, with the first fan 73A located above the second fan 73B.

[0137] Furthermore, specific references Figure 6 The top of the processing box 61 is provided with a slide groove 752; the second damper 75B is, for example, a plate-like member slidably disposed in the slide groove 752, which can be controllably slid from the slide groove 752 into the second air distribution channel 722B to close the second air distribution channel 722B, as shown. Figure 6 As shown in the figure, when the second damper 75B slides into the slide groove 752 as indicated by the arrow in the figure, the second air distribution passage 722B opens.

[0138] Similarly, refer Figure 7 The bottom of the top cover 715 is provided with a sliding groove 751; the first damper 75A is, in example, a plate-like member slidably disposed in the sliding groove 752, which can be controllably slid from the sliding groove 751 into the first air distribution channel 721A to close the first air distribution channel 721A, as shown. Figure 6 As shown in the figure, when the first damper 75A slides into the slide groove 751 as indicated by the arrow in the figure, the first air distribution channel 721A opens.

[0139] Of course, this is only a specific structural example of the first damper 75A and the second damper 75B, and their structures are not limited to this.

[0140] Next, re-reference Figure 4 and Figure 5 In one embodiment, the first gas distribution channel 721A has a first gas distribution port 721 formed on the integrated module; the first gas distribution port 721 is vertically connected to the first air supply hole 51A of the first preservation chamber 50A.

[0141] 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 preservation chamber 50B.

[0142] Next, the gas distribution module 70 also includes a first return gas channel 741A and a second return gas channel 742B.

[0143] The first return gas channel 741A connects the gas processing module 60 and the first fresh-keeping chamber 50A, so that gas can flow from the first fresh-keeping chamber 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 chamber 50A.

[0144] Similarly, the second return gas channel 42B connects the gas processing module 60 and the second fresh-keeping chamber 50B, so that gas can flow from the second fresh-keeping chamber 50B to the gas processing module 60. In this way, combined with the preceding second gas distribution channel 722B, a circulating airflow is formed between the gas processing module 60 and the second fresh-keeping chamber 50B.

[0145] 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 preservation chamber 50A. When the first fan 73A is running, under the drive of the first fan 73A, the gas in the first preservation chamber 50A enters the first return air passage 741A sequentially through the first return air hole 52A and the first return air port 741.

[0146] Similarly, the second air return channel 722B has a second air return port 742 formed on the integrated module, and the second air return port 742 is对接ed to the second air return hole 52B of the second fresh-keeping chamber 50B. When the second fan 73B operates, under the drive of the second fan 73B, the gas in the second fresh-keeping chamber 50B sequentially enters the second air return channel 722B through the second air return hole 52B and the second air return port 742.

[0147] Correspondingly, the processing cartridge 61 is further provided with an air inlet 612.

[0148] The first air return channel 741A and the second air return channel 722B are连通ed to the inside of the processing cartridge 61 and the outside of the gas processing unit 62 via the air inlet 612. In this way, the gas in the first air return channel 741A and the second air return channel 722B can return to the processing cartridge 61, so as to facilitate the gas processing unit 62 to regulate the content of specific gases (such as reducing the oxygen content).

[0149] Preferably, the first air return channel 741A and the first air distribution channel 721A are arranged on the same layer; the second air return channel 742B and the second air distribution channel 722B are arranged on the same layer. Specifically, the height of the second air return channel 742B and the second air distribution channel 722B is below that of the first air return channel 741A and the first air distribution channel 721A.

[0150] Next, refer to Figure 11 , the second fresh-keeping chamber 50B includes a fresh-keeping cylinder 55 and a wind guide cylinder 54 fixed outside the fresh-keeping cylinder 55. The fresh-keeping gas at the second air supply hole 51B flows through the wind guide cylinder 54 and flows downward into the inside of the second fresh-keeping chamber 50B through several openings on the fresh-keeping cylinder 55, so as to facilitate the controlled atmosphere fresh-keeping of food. Such a structure can improve the uniformity of the distribution of the fresh-keeping gas inside the second fresh-keeping chamber 50B.

[0151] In an embodiment, the first fan 73A and the second fan 73B are respectively set to be adjustable in speed. 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 refrigeration appliance 100 can be实现d to应对 multiple conditions of the refrigeration appliance 100, thereby improving the stability and effect of the fresh-keeping atmosphere in the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B, and can also improve the lifespan of the gas processing module 60 and reduce energy consumption.

[0152] Furthermore, the refrigeration appliance 100 further includes a first door body 53A for opening and closing the first fresh-keeping chamber 50A and a second door body 53B for opening and closing the second fresh-keeping chamber 50B.

[0153] Refer to Figure 12The refrigeration appliance 100 includes a control system 90, which includes a first signal device 911, a second signal device 912, and a controller 92.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] The controller 92 is electrically connected to the first signaler 911, the second signaler 912, the airflow drive mechanism (i.e., the first fan 73A and the second fan 73B in this embodiment) and the gas handling module 60, and is used to control the refrigeration appliance 100 to be in different working modes according to the signals sensed by the first signaler 911 and the second signaler 912.

[0158] The operating modes include, for example, sleep mode, dehumidification mode, and dual-mode air conditioning.

[0159] 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 refrigeration appliance 100 is not subject to controlled atmosphere.

[0160] In the dehumidification mode, the gas handling module 60 is closed, the first damper 75A and the second damper 75B are open, and the airflow drive mechanism operates at a first operating capacity, for example, the first fan 73A can operate at a speed of V1m and the second fan 73B can operate at a speed of V2m.

[0161] In the dual-atmosphere mode, the gas handling module 60 is turned on, the first damper 75A and the second damper 75B are opened, and the airflow drive mechanism operates at the second operating capacity. For example, the first fan 73A may operate at a speed of V1 and the second fan 73B may operate at a speed of V2.

[0162] Wherein, the second operating capacity is less than the first operating capacity, that is, V1 < V1m, V2 < V2m.

[0163] In this way, the first fan 73A and the second fan 73B rotate at higher speeds in the dehumidification mode than in the dual air conditioning mode. Thus, in the dehumidification mode, the first preservation chamber 50A and the second preservation chamber 50B will not be supplied with preservation gas. Instead, the gas in the gas treatment module 60 will be discharged, thereby achieving the dehumidification effect and extending the service life of the gas treatment module 60.

[0164] In another embodiment, the refrigeration appliance 100 also has a first strong atmosphere control mode and a second strong atmosphere control mode.

[0165] In the first strong gas regulation mode, the gas processing module 60 is turned on, the first damper and the second damper are opened, the first fan 73A runs at a speed of V1k, and the second fan 73B runs at a speed of V2n, where V2n < V2 and V1 < V1k ≤ V1m.

[0166] Similarly, in the second strong gas regulation mode, the gas handling module 60 is turned on, the first damper and the second damper are opened, the first fan 73A runs at a speed of V1n, and the second fan 73B runs at a speed of V2k, where V1n < V1 and V2 < V2k ≤ V2m.

[0167] Furthermore, the controller 92 can also be used to implement various steps of the following control methods, for example... Figure 13 and Figure 14 The various steps involved will not be elaborated upon here.

[0168] 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.

[0169] For example, controller 92 may be operable to execute programming instructions or microcontroller code associated with the operating cycle of refrigeration appliance 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.

[0170] Continue to participate Figure 13 An embodiment of this application also provides a control method for a refrigeration appliance 100, the various steps of which are described below.

[0171] Step S1: After the refrigeration appliance 100 is powered on, monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both turned off.

[0172] 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.

[0173] Step S2: In step S1, if the judgment 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 judgment result is positive, meaning that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, then the dual-controlled 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-controlled atmosphere mode is not executed, and the system waits indefinitely.

[0174] Step S3: After executing the dual modified atmosphere mode, before both the first freshness compartment 50A and the second freshness compartment 50B reach the modified atmosphere target, continuously monitor whether the first freshness compartment 50A and the second freshness compartment 50B are turned on.

[0175] 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.

[0176] The determination of whether the "controlled atmosphere target has been achieved" can be made by detecting the specific gas concentration sensor 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 fresh-keeping gas supplied to each fresh-keeping compartment 50.

[0177] Step S4: If the monitoring result in step S3 is "all yes", that is, the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B are both open, then 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 fresh-keeping chamber 50A and the second fresh-keeping 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.

[0178] Step S5: If it is detected in step S3 that only the first fresh-keeping chamber 50A or only the second fresh-keeping chamber 50B is open, then the control gas handling module 60 is turned on and the airflow drive mechanism is turned off, that is, both the first fan 73A and the second fan 73B are turned off.

[0179] In one embodiment, in step S5, if it is detected in step S2 that only the first fresh-keeping chamber 50A is open, then the gas handling module 60 is turned on, the first fan 73A and the second fan 73B are turned off, and after the first fresh-keeping chamber 50A is turned off, the gas handling module 60 is turned on, the first damper 75A and the second damper 75B are opened, the first fan 73A runs at a speed of V1k, and the second fan 73B runs at a speed of V2n.

[0180] If only the second fresh-keeping chamber 50B is detected to be open in step S2, then the control gas handling module 60 is turned on, the first fan 73A and the second fan 73B are turned off, and after the second fresh-keeping chamber is turned off, the control gas handling module 60 is turned on, the first damper 75A and the second damper 75B are opened, the first fan 73A runs at a speed of V1n, and the second fan 73B runs at a speed of V2k.

[0181] V1n<V1<V1k≤V1m, V2n<V2<V2k≤V2m.

[0182] 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.

[0183] Next, participants Figure 14The first embodiment also provides another control method, which includes the following steps.

[0184] S11, determine whether the closing time of the first preservation compartment 50A and the second preservation compartment 50B both reach the first threshold Tn; if so, proceed to step S12.

[0185] S12, control the airflow drive mechanism to open, which in this embodiment means the first fan 73A and the second fan 73B are turned on, and the first damper 75A and the second damper 75A are alternately opened for a first duration T1. Then control the airflow drive mechanism to close, and the gas processing module 60 runs for a second duration T2 before closing. Start timing from zero and proceed to step S13.

[0186] S13, after the timer reaches the third duration T3, determine whether the closing duration of the first preservation chamber 50A and the second preservation chamber 50B has reached the second threshold Tm;

[0187] S14, if step S13 determines no, then return to step S11; if step S13 determines yes, then control the gas processing module 60 to open, the airflow drive mechanism to open, the first damper 75A to open, and the second damper 75B to open.

[0188] The first threshold Tn can be, for example, 1.5-2.5 hours, such as 2 hours; the first duration T1 can be, for example, 3-8 minutes, such as 5 minutes; the second duration T2 can be, for example, 10-20 minutes, such as 15 minutes; the third duration T3 can be, for example, 15-30 minutes, such as 20 minutes; and the second threshold Tm can be, for example, more than 6 hours, such as 8 hours.

[0189] In this way, the first preservation compartment 50A and the second preservation compartment 50B can avoid condensation problems when closed for a long time, and the stability of the preservation environment can also be maintained.

[0190] Of course, the above control method is only one of the operating processes that the mechanical structure of the refrigeration appliance 100 of this application can realize. The refrigeration appliance 100 of this application can also be operated in other ways.

[0191] Next, see Figures 15 to 18 The application provides a second embodiment of the refrigeration appliance 100. The difference between this second embodiment and the first embodiment lies only in that the airflow drive mechanism is implemented as a fan, and some corresponding adaptive adjustments. These key differences will be described below.

[0192] Specifically, in this second embodiment, the airflow driving mechanism is a fan 73 disposed in the common channel 72. The fan 73 drives a portion of the preservation gas from the gas processing module 60 to the first gas distribution channel 721A and another portion of the preservation gas from the gas processing module 60 to the second gas distribution channel 722B.

[0193] Correspondingly, in this embodiment, when the refrigeration appliance 100 is in the dehumidification mode, the airflow drive mechanism operates with a first operating capacity, which can be characterized as: the fan 73 operates at a speed of V1m.

[0194] Similarly, when the refrigeration appliance 100 is in the dual-atmosphere mode, the airflow drive mechanism operates at a second operating capacity, which is characterized by the fan 73 operating at a speed of V1; where V1 < V1m.

[0195] Apart from the above, the other structures of the refrigeration appliance 100 in this embodiment are basically the same as those in the first embodiment above, and will not be described again.

[0196] In summary, compared with the prior art, this application, by setting up a first gas distribution channel 721A and a second gas distribution channel 722B, and by setting up a first damper 75A and a second damper 75B, can achieve precise control over the proportion of preservation gas distributed to the first gas distribution channel 721A and the second gas distribution channel 722B through the control of the first damper 75A and the second damper 75B. Thus, it can achieve the preservation target of the two preservation chambers 50 in the shortest time and with the highest efficiency, regardless of the different conditions of the refrigeration appliance 100. This not only improves the preservation effect, but also reduces the energy consumption of the refrigeration appliance 100 during the preservation atmosphere control.

[0197] 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.

[0198] 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 refrigeration appliance, characterized in that, include: The container has a first and a second preservation compartment inside. Gas processing module, which is used to generate preservative gas; The first gas distribution channel connects the gas processing module and the first preservation chamber, so that preservation gas can flow from the gas processing module into the first preservation chamber. The second gas distribution channel is arranged in parallel with the first gas distribution channel and connects to the gas processing module and the second preservation chamber, so that the preservation gas flows from the gas processing module into the second preservation chamber. The first damper, used to open and close the first air distribution passage; and The second damper is used to open and close the second air distribution passage.

2. The refrigeration appliance according to claim 1, characterized in that, The refrigeration appliance further includes an airflow driving mechanism, which drives the preservation gas from the gas processing module to the first gas distribution channel and the second gas distribution channel.

3. The refrigeration appliance according to claim 2, characterized in that, The refrigeration appliance includes a gas distribution box, which is assembled on the outside of the gas processing module and forms an integrated module with the gas processing module. The airflow drive mechanism, the first damper, the second damper, the first air distribution channel, and the second air distribution channel are integrated in the air distribution box or the integrated module.

4. The refrigeration appliance according to claim 2, characterized in that, The refrigeration appliance has a sleep mode, a dehumidification mode, and a dual atmosphere control mode; In the sleep mode, both the airflow drive mechanism and the gas handling module are turned off; In the dehumidification mode, the gas handling module is turned off, the first damper and the second damper are opened, and the airflow drive mechanism operates at the first operating capacity. In the dual-atmosphere mode, the gas processing module is activated, the first damper and the second damper are opened, and the airflow drive mechanism operates at a second operating capacity; the second operating capacity is less than the first operating capacity.

5. The refrigeration appliance according to claim 4, characterized in that, The refrigeration appliance also includes a common channel, through which the first gas distribution channel and the second gas distribution channel are both connected to the gas processing module. The airflow drive mechanism includes a first fan and a second fan. The first fan is installed in the first air distribution channel, or it is installed in the common channel and its exhaust port is located at the intersection of the common channel and the first air distribution channel; The second fan is installed in the second air distribution channel, or it is installed in the common channel and its exhaust port is located at the intersection of the common channel and the second air distribution channel.

6. The refrigeration appliance according to claim 5, characterized in that, The operation of the airflow drive mechanism with the first operating capacity is characterized by the first fan operating at a speed of V1m and the second fan operating at a speed of V2m. The operation of the airflow drive mechanism with the second operating capability is characterized by the first fan operating at a speed of V1 and the second fan operating at a speed of V2. Where V1 < V1m, V2 < V2m.

7. The refrigeration appliance according to claim 4, characterized in that, The refrigeration appliance also includes a common channel, through which the first gas distribution channel and the second gas distribution channel are both connected to the gas processing module. The airflow driving mechanism is a fan installed in the common channel. The fan drives a portion of the preservation gas from the gas processing module to the first gas distribution channel and another portion of the preservation gas from the gas processing module to the second gas distribution channel.

8. The refrigeration appliance according to claim 7, characterized in that, The operation of the airflow drive mechanism with the first operating capacity is characterized by the fan operating at a speed of V1m. The operation of the airflow drive mechanism with the second operating capability is characterized by the fan operating at a speed of V1. Where V1 < V1m.

9. The refrigeration appliance according to claim 4, characterized in that, The refrigeration appliance further includes a first door for opening and closing the first fresh-keeping compartment, a second door for opening and closing the second fresh-keeping compartment, a first signal device for sensing the opening and closing of the first door, and a second signal device for sensing the opening and closing of the second door. The controller is also configured to be electrically connected to the first signal device and the second signal device, and to control the operation of the first damper, the second damper, the airflow drive mechanism and the gas handling module according to the signals sensed by the first signal device and the second signal device.

10. The refrigeration appliance according to claim 4, characterized in that, The refrigeration appliance also includes a mode collector, which responds to user input to collect the respective operating modes of the first and second fresh-keeping compartments; The controller is configured to control the operation of the first damper, the second damper, the airflow drive mechanism, and the gas processing module according to the operating mode collected by the mode collector.

11. A control method for a refrigeration appliance as described in claim 2, characterized in that, The control method Includes the following steps, S1, monitor whether both the first and second fresh-keeping compartments are closed; S2, if step S1 determines that it is yes, then control the gas processing module to open, the first damper and the second damper to open, and the airflow drive mechanism to operate at the second operating capacity; S3, before both the first and second fresh-keeping compartments reach the controlled atmosphere target, continuously monitor whether the first and second fresh-keeping compartments are open; S4, if the monitoring result in step S2 is fully open, then control the gas processing module to close, the first damper and the second damper to open, the airflow drive mechanism to operate at the first operating capacity, and return to step S1; wherein, the first operating capacity is greater than the second operating capacity; S5, if it is detected in step S2 that only the first preservation chamber or only the second preservation chamber is open, then control the gas processing module to open and the airflow drive mechanism to close.

12. The control method for a refrigeration appliance according to claim 11, characterized in that, The airflow driving mechanism is a fan that drives the preservative gas into the first and second gas distribution channels. The first operating capacity is the fan speed V1m, and the second operating capacity is the fan speed V1 < V1m.

13. The control method for a refrigeration appliance according to claim 11, characterized in that, The airflow driving mechanism includes a first fan that drives the preservative gas to flow to the first gas distribution channel and a second fan that drives the preservative gas to flow to the second gas distribution channel. The first operating capacity is when the first fan operates at a speed of V1m and the second fan operates at a speed of V2m; the second operating capacity is when the first fan operates at a speed of V1 and the second fan operates at a speed of V2; V1 < V1m, V2 < V2m. In step S5: If it is detected in step S2 that only the first fresh-keeping chamber is open, then control the gas processing module to open, the first fan and the second fan to close, and after the first fresh-keeping chamber is closed, control the gas processing module to open, the first damper and the second damper to open, the first fan to run at speed V1k, and the second fan to run at speed V2n. If it is detected in step S2 that only the second fresh-keeping chamber is open, then the gas processing module is controlled to open, the first fan and the second fan are closed, and after the second fresh-keeping chamber is closed, the gas processing module is controlled to open, the first damper and the second damper are opened, the first fan runs at a speed of V1n, and the second fan runs at a speed of V2k. V1n<V1<V1k≤V1m, V2n<V2<V2k≤V2m.

14. A control method for a refrigeration appliance according to claim 2, characterized in that, The control method includes the following steps: S11, determine whether the closing time of the first and second preservation compartments has reached the first threshold Tn; if so, proceed to step S12; S12, control the airflow drive mechanism to open, and the first damper and the second damper alternately open for a first duration T1, then control the airflow drive mechanism to close, and the gas processing module to run for a second duration T2 before closing, start timing from zero, and proceed to step S13; S13, after the timer reaches the third duration T3, determine whether the closing duration of the first and second preservation chambers has reached the second threshold Tm; S14, if step S13 determines no, then return to step S11; if step S13 determines yes, then control the gas processing module to open, the airflow drive mechanism to open, the first damper to open, and the second damper to open.

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