Refrigerator

Abstract

The utility model provides a refrigerator. The refrigerator comprises a refrigerator body and a refrigerator door, wherein more than two fresh-keeping chambers are arranged in the refrigerator body; the gas treatment module is used for forming fresh-keeping gas and is provided with a gas outlet through which the fresh-keeping gas flows out; and the gas distribution module is assembled on the gas treatment module, the gas distribution module and the gas treatment module form an integrated module, the gas distribution module comprises more than two gas distribution channels, the two gas distribution channels are communicated with the gas outlet in parallel, and each gas distribution channel is communicated with the corresponding fresh-keeping chamber. Thus, reasonable distribution and accurate distribution of fresh-keeping gas are facilitated, the complexity of a pipeline structure is greatly reduced, fresh-keeping supply pipelines of the fresh-keeping chambers are easy to install and arrange, in addition, more diversified combination of the fresh-keeping chambers can be achieved, and the fresh-keeping function of the refrigerator is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a refrigerator. BACKGROUND

[0002] The modified atmosphere preservation technology generally refers to a technology for prolonging the storage life of food by adjusting the gas atmosphere (e.g., the proportion of gas components) of the closed space where the storage is located. The basic principle is that in a certain closed space, a gas atmosphere different from the composition of air is obtained through various adjustment methods to inhibit the physiological and biochemical processes and microbial activities that cause the storage (usually food) to spoil and deteriorate.

[0003] As known by those skilled in the art, the composition of air includes, by volume percentage, about 78% nitrogen, about 21% oxygen, about 0.939% noble gas, 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 preservation, the preservation gas is a gas composed of a single component or multiple components different from the composition of air. When this gas is used for food storage, it can delay the spoilage or ripening of certain types or several types of food.

[0005] To achieve the purpose of modified atmosphere preservation, a common technique for a refrigerator is to install a gas processing unit that can process specific gas components, such as increasing or decreasing the content of specific gas components, to obtain preservation gas.

[0006] However, research has found that the refrigerator with modified atmosphere preservation currently has problems such as unreasonable preservation gas supply, low efficiency, and complex pipeline. SUMMARY

[0007] To solve the above technical problems, the purpose of the present application is to provide a refrigerator.

[0008] To achieve the above purpose, an embodiment provides a refrigerator. The refrigerator comprises:

[0009] a cabinet body, which is provided with two or more preservation compartments inside;

[0010] a gas processing module for forming preservation gas, which has a gas outlet for the preservation gas to flow out;

[0011] a gas distribution module assembled with the gas processing module and forming an integrated module with the gas processing module, the gas distribution module comprising two or more gas distribution channels, the two gas distribution channels being connected in parallel to the gas outlet, and each gas distribution channel being connected to a corresponding preservation compartment.

[0012] As an optional embodiment, the gas distribution module comprises a gas distribution box, and the gas distribution channels are at least partially formed in the gas distribution box or between the gas distribution box and the gas treatment module.

[0013] As an optional embodiment, the two or more fresh-keeping compartments comprise a first fresh-keeping compartment and a second fresh-keeping compartment, and the two gas distribution channels comprise a first gas distribution channel and a second gas distribution channel arranged in parallel;

[0014] The first gas distribution channel is in communication with the first fresh-keeping compartment;

[0015] The second gas distribution channel is in communication with the second fresh-keeping compartment.

[0016] As an optional embodiment, the gas distribution module further comprises a common channel, and the first gas distribution channel and the second gas distribution channel are both communicated to the gas treatment module through the common channel.

[0017] As an optional embodiment, the gas distribution module further comprises a fan, and the fan is used to drive the fresh-keeping gas to flow from the gas treatment module to the first gas distribution channel and the second gas distribution channel.

[0018] As an optional embodiment, the minimum cross-sectional area ratio of the first gas distribution channel to the second gas distribution channel is C:D;

[0019] Wherein, A≥B, C≥D and C:D is between A:4B / 5 and A:6B / 5; or, A

[0020] As an optional embodiment, the first gas distribution channel has a first gas distribution port formed on the integrated module, and the first gas distribution port defines the minimum cross section of the first gas distribution channel;

[0021] The second gas distribution channel has a second gas distribution port formed on the integrated module, and the second gas distribution port defines the minimum cross section of the second gas distribution channel.

[0022] As an optional embodiment, the gas distribution module further comprises a gravity baffle arranged at the second gas distribution channel;

[0023] The fan is provided with two or more gears with different rotation speeds, and corresponding to different gears, the gravity baffle rotates to different angles under the driving of the airflow in the second gas distribution channel.

[0024] As an optional embodiment, the fan is provided with a first gear with a rotation speed v1, a second gear with a rotation speed v2, and a third gear with a rotation speed v3, v1≤v01, v02≤v2, v01

[0025] When the rotation speed of the fan is not more than a first threshold value v01, the gravity baffle cannot be driven to rotate by the airflow and completely blocks the second air distribution passage; when the rotation speed of the fan is greater than or equal to a second threshold value v02, the gravity baffle is driven to rotate by an angle X, and the gravity baffle completely opens the second air distribution passage.

[0026] As an optional embodiment, the first air distribution passage has a first air distribution opening formed on the integrated module, and the second air distribution passage has a second air distribution opening formed on the integrated module.

[0027] The gravity baffle is arranged at the second air distribution opening and used to shield the second air distribution opening; and a free lower end of the gravity baffle is driven to rotate away from the second air distribution opening by the airflow flowing out of the second air distribution opening.

[0028] As an optional embodiment, the air distribution module further comprises an air conditioning damper arranged at the second air distribution passage to open and close the second air distribution passage.

[0029] As an optional embodiment, the refrigerator further comprises:

[0030] a refrigeration compartment;

[0031] a refrigeration system comprising a refrigerating device arranged in the refrigeration compartment, the refrigerating device being used to cool air in the refrigeration compartment;

[0032] an air supply air duct communicating with the refrigeration compartment; and

[0033] a refrigeration fan used to drive cold air in the refrigeration compartment to flow along the air supply air duct to the outer periphery of the first fresh-keeping compartment and the outer periphery of the second fresh-keeping compartment.

[0034] As an optional embodiment, the refrigerator comprises:

[0035] a first fresh-keeping box body, the inside of which encloses the first fresh-keeping compartment;

[0036] a second fresh-keeping box body, the inside of which encloses the second fresh-keeping compartment, the second fresh-keeping box body comprising a box body and a gas barrier and moisture permeable membrane, the box body being provided with a through window penetrating from the inside to the outside, and the gas barrier and moisture permeable membrane sealingly covering the through window, the gas barrier and moisture permeable membrane being configured to allow water vapor to permeate out of the second fresh-keeping compartment.

[0037] As an optional embodiment, the air supply air duct has a first air supply opening, a second air supply opening, and a humidity adjusting damper used to open and close the second air supply opening.

[0038] The air supply duct is communicated to the outer periphery of the second fresh-keeping chamber through the first air supply port and the second air supply port, so as to reduce the temperature in the second fresh-keeping chamber.

[0039] Compared with the first air supply port, the cold air flowing out of the second air supply port flows towards the gas permeable membrane.

[0040] As an optional embodiment, the air distribution module further comprises a first fan and a second fan, the first fan drives fresh-keeping gas to flow from the gas treatment module into the first air distribution channel, and the second fan drives fresh-keeping gas to flow from the gas treatment module into the second air distribution channel.

[0041] As an optional embodiment, the first fan is arranged in the first air distribution channel, or is arranged in the common channel and has an exhaust port arranged at the intersection of the common channel and the first air distribution channel.

[0042] The second fan is arranged in the second air distribution channel, or is arranged in the common channel and has an exhaust port arranged at the intersection of the common channel and the second air distribution channel.

[0043] As an optional embodiment, the first fan and the second fan are respectively arranged to be adjustable in rotational speed.

[0044] As an optional embodiment, the air distribution module further comprises a first air conditioning damper and a second air conditioning damper, the first air conditioning damper is arranged at the second air distribution channel to open and close the second air distribution channel, and the second air conditioning damper is arranged at the first air distribution channel to open and close the first air distribution channel.

[0045] As an optional embodiment, the first fresh-keeping chamber is arranged above the integrated module, and the second fresh-keeping chamber is arranged laterally to the integrated module.

[0046] The first air distribution channel and the second air distribution channel are arranged in layers.

[0047] The first air distribution channel has a first air distribution port formed on the integrated module, and the first air distribution port is connected to the first gas supply hole of the first fresh-keeping chamber in a plug-in manner.

[0048] 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 gas supply hole of the second fresh-keeping chamber.

[0049] As an optional embodiment, the top of the gas treatment module is provided with a plurality of air deflectors, and the second air distribution channel is formed between the air deflectors.

[0050] The air distribution box comprises:

[0051] a bottom cover assembled on the gas processing module and having a horizontal partition plate, the first gas distribution channel and the second gas distribution channel being distributed on the upper and lower sides of the partition plate;

[0052] a top cover assembled on the bottom cover and having a bottom provided with a plurality of air guide ribs, the first gas distribution channel being formed between the air guide ribs.

[0053] As an optional embodiment, the gas distribution module further comprises a plurality of return gas channels;

[0054] At least one of the fresh-keeping compartments is connected to the gas processing module through one of the return gas channels, so that the gas inside the fresh-keeping compartment returns to the gas processing module.

[0055] As an optional embodiment, the gas processing module comprises:

[0056] a gas processing unit comprising an anode and a cathode, the cathode being configured to consume oxygen outside the gas processing unit through an electrochemical reaction to form fresh-keeping gas in a state of oxygen deficiency outside the gas processing unit, and the anode being configured to generate oxygen inside the gas processing unit through an electrochemical reaction to form fresh-keeping gas in a state of oxygen enrichment in the inner cavity;

[0057] a processing box surrounding the outside of the gas processing unit, the processing box being provided with the gas outlet for the fresh-keeping gas in the state of oxygen deficiency or the fresh-keeping gas in the state of oxygen enrichment to flow out.

[0058] Compared with the prior art, the embodiment of the present application has the beneficial effects that: the present application sets a gas distribution module, assembles the gas distribution module on the gas processing module to form an integrated module with the gas processing module, and the gas distribution module has a plurality of parallel gas distribution channels to supply the same type of fresh-keeping gas to each fresh-keeping compartment. In this way, the gas flow supply of the plurality of fresh-keeping compartments is realized based on the gas distribution module, which is beneficial to the reasonable and accurate distribution of fresh-keeping gas, greatly reduces the complexity of the pipeline structure, simplifies the installation and layout of the fresh-keeping supply pipeline of the fresh-keeping compartment, and can also realize more diversified combination of the fresh-keeping compartments, greatly improving the fresh-keeping function of the refrigerator. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 is a perspective view of a refrigerator according to the first embodiment of the present application;

[0060] Figure 2 is a perspective view of a part of the refrigerator according to the first embodiment of the present application;

[0061] Figure 3 is a perspective exploded view of a part of the refrigerator according to the first embodiment of the present application;

[0062] Figure 4 is a schematic block diagram of part of the structure of a refrigerator according to the first embodiment of the present application;

[0063] Figure 5 is an exploded view of a gas processing module and a gas distribution module according to the first embodiment of the present application;

[0064] Figure 6 is a perspective view of a gas distribution module according to the first embodiment of the present application;

[0065] Figure 7 is a perspective view of part of the structure of a gas distribution module according to the first embodiment of the present application;

[0066] Figure 8 is a top view of a gas processing module and a gas distribution module according to the first embodiment of the present application;

[0067] Figure 9 is Figure 8 a sectional view along line B-B in FIG. 15A;

[0068] Figure 10 is Figure 8 a sectional view along line C-C in FIG. 15B;

[0069] Figure 11 is a schematic block diagram of part of the structure of a refrigerator according to the first embodiment of the present application;

[0070] Figure 12 is a flowchart of a control method for a refrigerator according to the first embodiment of the present application;

[0071] Figure 13 is a schematic block diagram of part of the structure of a refrigerator according to the second embodiment of the present application;

[0072] Figure 14 is a perspective view from below of part of the structure of a refrigerator according to the second embodiment of the present application;

[0073] Figure 15 is a side view of part of the structure of a refrigerator according to the second embodiment of the present application;

[0074] Figure 16 is a schematic block diagram of part of the structure of a refrigerator according to the second embodiment of the present application;

[0075] Figure 17 is a schematic block diagram of part of the structure of a refrigerator according to the third embodiment of the present application;

[0076] Figure 18 is a perspective exploded view of part of the structure of a refrigerator according to the fourth embodiment of the present application;

[0077] Figure 19 is a perspective view of a gas processing module and a gas distribution module according to the fourth embodiment of the present application;

[0078] Figure 20 is an exploded view of the gas processing module and the gas distribution module of the fourth embodiment of the present application;

[0079] Figure 21 is a top view of the gas processing module and the gas distribution module of the fourth embodiment of the present application;

[0080] Figure 22 is a sectional view taken along line B-B in Figure 21

[0081] Figure 23 is a perspective view of the bottom of the top cover of the gas distribution box of the fourth embodiment of the present application;

[0082] Figure 24 is a sectional view taken along line A-A in Figure 18

[0083] Figure 25 is a structural schematic block diagram of the partial components of the fifth embodiment of the present application;

[0084] Figure 26 is a flowchart of the control method of the refrigerator of the fifth embodiment of the present application;

[0085] Figure 27 is a structural schematic block diagram of the partial components of the fifth embodiment of the present application;

[0086] Figure 28 is an exploded view of the gas processing module and the gas distribution module of the fifth embodiment of the present application;

[0087] Figure 29 is a top view of the gas processing module and the gas distribution module of the fifth embodiment of the present application;

[0088] Figure 30 is a sectional view taken along line A-A in Figure 29

[0089] Figure 31 is a structural schematic block diagram of the partial components of the fifth embodiment of the present application;

[0090] Figure 32 is a flowchart of the control method of the refrigerator of the fifth embodiment of the present application;

[0091] Figure 33 is another flowchart of the control method of the refrigerator of the fifth embodiment of the present application;

[0092] Figure 34 is a structural schematic block diagram of the partial components of the sixth embodiment of the present application;

[0093] Figure 35 ​​​is a structural schematic diagram of a part component of the seventh embodiment of the present application. DETAILED DESCRIPTION

[0094] The present application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and the structural, method, or functional changes made by those skilled in the art based on these embodiments are included in the protection scope of the present application.

[0095] In various views of the present application, certain dimensions of structures or parts are exaggerated relative to other structures or parts for the purpose of illustration, and thus only serve to illustrate the basic structure of the subject matter of the present application.

[0096] The terms such as "upper", "above", "lower", "below", and the like used herein to indicate spatial relative positions are for the purpose of description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms can be intended to include different orientations of the device in use or in operation other than the orientation shown in the drawings. For example, if the device in the drawing is turned over, the unit described as being "below" or "under" the other unit or feature will be "above" the other unit or feature. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptions used herein are interpreted accordingly.

[0097]

First Embodiment

[0098] Referring to Figures 1 to 12 , the first embodiment of the present application provides a refrigerator 100.

[0099] In the drawings, the refrigerator 100 can be specifically provided as a refrigerator, which can be a household refrigerator or used as a commercial refrigerator.

[0100] The basic structure of the refrigerator 100 of the present application will be introduced first below. Specifically, the refrigerator 100 includes a cabinet 10, a door body 20, and a refrigeration system 30 (see reference number Figure 13 ).

[0101] The cabinet 10 includes a cabinet shell 11, one or more inner containers 12, and a thermal insulation layer. Among them, the cabinet shell 11 constitutes part of the appearance of the refrigerator 100, and in the embodiment of the drawings, the cabinet shell 11 is generally a cabinet structure with a back plate, a top plate, a bottom plate, a left side plate, and a right side plate; the one or more inner containers 12 are sleeved inside the cabinet shell 11 and are arranged spaced apart from the cabinet shell 11 to form a space between the cabinet shell 11 and the one or more inner containers 12; and the thermal insulation layer is filled in the space, and specifically, the thermal insulation layer can include a thermal insulation plate and a foaming material.

[0102] The one or more inner containers 12 enclose several compartments, such as a freezing compartment 102, a refrigerating compartment 101, a variable-temperature compartment, etc., according to temperature settings in the compartments.

[0103] The number of door bodies 20 is one or more, each of which is movably connected to the front side of the cabinet 10 and used to open and close each of the compartments. For example, when a door body 20 opens a compartment, a user can take or put articles in the compartment; when the door body 20 closes a compartment, the compartment is substantially closed, and the user cannot take or put articles, and even the low-temperature gas in the compartment cannot pass through the joint between the door body 20 and the cabinet 10 to enter or exit the compartment, thereby achieving low-temperature storage.

[0104] The refrigeration system 30 includes a refrigerator for providing cold energy to the refrigerator 100 to maintain a low-temperature storage environment in each of the compartments.

[0105] The specific structure of the refrigeration system 30 has various embodiments in the art. For example, in one embodiment, the refrigeration system 30 can be a thermoelectric refrigeration system, and the refrigerator is a semiconductor refrigeration sheet; in another embodiment, the refrigeration system 30 can be a vapor compression refrigeration system, and the refrigerator is an evaporator, in addition to a compressor, a condenser, a throttling element, etc., which are connected in series to form a circulation pipeline, and under the action of the compressor, a refrigerant flows in the circulation pipeline and absorbs heat and releases heat based on phase change, and then exchanges heat with air at the evaporator to produce cold air required by the compartments.

[0106] In the present application, the cabinet 10 is further provided with a refrigeration cabin and a cold air duct.

[0107] The refrigeration cabin is provided with the refrigerator, and as described above, when the refrigeration system 30 is started, the refrigerator can exchange heat with air in the refrigeration cabin to make the air in the refrigeration cabin into cold air.

[0108] The cold air duct communicates the refrigeration cabin with part or all of the compartments, thereby providing cold air to the compartments to maintain a low-temperature environment in the compartments.

[0109] For example, the cold air duct can include a supply air duct and a return air duct. The supply air duct communicates the refrigeration cabin with the compartments, so that cold air flows from the refrigeration cabin to the compartments along the supply air duct; the return air duct communicates the refrigeration cabin with the compartments, so that cold air flows from the compartments to the refrigeration cabin along the return air duct.

[0110] Of course, in order to meet the refrigeration requirements of each compartment, the air duct, the refrigeration cabin and the connection mode of each compartment have various feasible modes, which are disclosed in the art and will not be described in detail in this application.

[0111] Referring to Figure 2 In this application, the rear side of the compartment 101 is provided with an air duct cover plate 14; the refrigerator 100 further comprises at least two fresh-keeping compartments 50 arranged in the compartment 101.

[0112] The air supply duct has a plurality of air supply openings 151 distributed on the outer periphery of the fresh-keeping compartment 50, so that the cold air in the refrigeration cabin flows to the fresh-keeping compartment 50 through the air supply duct, thereby cooling the fresh-keeping compartment 50 (e.g., the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B) to maintain a low-temperature environment.

[0113] Referring to Figures 3 to 5 The refrigerator 100 further comprises a gas processing module 60 and a gas distribution module 70.

[0114] The gas processing module 60 is configured to form fresh-keeping gas for adjusting the content of a specific gas, which can be supplied to each fresh-keeping compartment 50 to adjust the content of the specific gas in the fresh-keeping compartment 50.

[0115] The specific gas may, for example, be any one of oxygen, nitrogen, carbon dioxide, ethylene, etc.

[0116] After the fresh-keeping gas is supplied to a fresh-keeping compartment 50, the volume fraction of the specific gas in the fresh-keeping compartment 50 changes relative to the composition of air, and when the volume fraction of the specific gas reaches a target range, the preservation effect of the food stored in the fresh-keeping compartment 50 can be improved.

[0117] Among them, the composition of air generally contains: the volume fraction of nitrogen is about 78%, the volume fraction of oxygen is about 21%, the volume fraction of rare gas (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%.

[0118] In this application, the gas processing module 60 has a gas outlet (e.g., gas outlets 611, 613 introduced later) for the fresh-keeping gas to flow out; the gas distribution module 70 is assembled to the gas processing module 60 and forms an integrated module with the gas processing module 60, the gas distribution module 70 comprising two or more gas distribution channels, the two gas distribution channels being connected in parallel to the gas outlet, and each gas distribution channel being connected to a corresponding fresh-keeping compartment 50.

[0119] Therefore, the application sets the gas distribution module 70, assembles the gas distribution module 70 with the gas treatment module 60 to form an integrated module, and the gas distribution module 70 has multiple parallel gas distribution channels to supply the same type of fresh-keeping gas to each fresh-keeping chamber 50. The gas flow supply of the multiple fresh-keeping chambers 50 is realized based on the gas distribution module 70, which is beneficial to the reasonable and accurate distribution of fresh-keeping gas, greatly reduces the complexity of the pipeline structure, and simplifies the installation and layout of the fresh-keeping supply pipeline of the fresh-keeping chamber 50. In addition, the fresh-keeping chamber 50 can be more diversified, which greatly improves the fresh-keeping function of the refrigerator 100.

[0120] In an embodiment, the at least two gas distribution channels can include a first gas distribution channel 721A and a second gas distribution channel 722B. The first gas distribution channel 721A is connected to the gas treatment module 60 and the first fresh-keeping chamber 50A, so that the fresh-keeping gas flows from the gas treatment module 60 to the first fresh-keeping chamber 50A. The second gas distribution channel 722B is connected to the gas treatment module 60 and the second fresh-keeping chamber 50B, so that the fresh-keeping gas flows from the gas treatment module 60 to the second fresh-keeping chamber 50B.

[0121] In this embodiment, the specific gas adjustment volume ratio of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B is A:B, and the minimum cross-sectional area ratio of the first gas distribution channel 721A to the second gas distribution channel 722B is C:D. Wherein, A≥B, C≥D and C:D is between A:4B / 5 and A:6B / 5; or A

[0122] Therefore, by associating the specific gas adjustment volume ratio of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B and the minimum cross-sectional area ratio of the first gas distribution channel 721A to the second gas distribution channel 722B, the two satisfy a certain size relationship. Therefore, when the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B are fresh-keeping gas adjusted, the fresh-keeping target can be achieved in the shortest time and with the highest efficiency. Therefore, the fresh-keeping effect can be improved, and the energy consumption of the refrigerator 100 during fresh-keeping gas adjustment can be reduced.

[0123] In this application, the "specific gas adjustment volume ratio of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B" refers to the ratio of the specific gas adjustment volume of the first fresh-keeping chamber 50A to the specific gas adjustment volume of the second fresh-keeping chamber 50B.

[0124] Here, the specific gas adjustment volume of the first fresh-keeping chamber 50A refers to the volume A of the specific gas required for the first fresh-keeping chamber 50A to change from an air atmosphere to a set target atmosphere.

[0125] For example, the volume ratio of a specific gas in the air is P1, the target volume ratio of the specific gas in the first fresh-keeping chamber 50A is P2a, and the volume of the first fresh-keeping chamber 50A is Va, and then the specific gas adjustment volume A of the first fresh-keeping chamber 50A is Va×|P1-P2a|.

[0126] Similarly, the specific gas adjustment volume of the second fresh-keeping chamber 50B refers to the adjustment volume B of the specific gas required for the second fresh-keeping chamber 50B to change from the air atmosphere to the set target atmosphere.

[0127] For example, the volume ratio of a specific gas in the air is P1, the target volume ratio of the specific gas in the second fresh-keeping chamber 50B is P2b, and the volume of the second fresh-keeping chamber 50B is Vb, and then the specific gas adjustment volume A of the second fresh-keeping chamber 50B is Vb×|P1-P2b|.

[0128] The satisfaction of the relationship between A, B, C and D as above also means that if the specific gas adjustment volume of the first fresh-keeping chamber 50A is greater than or equal to the specific gas adjustment volume of the second fresh-keeping chamber 50B, then the minimum cross-sectional area of the first gas distribution channel 721A is greater than or equal to the minimum cross-sectional area of the second gas distribution channel 722B. If the specific gas adjustment volume of the first fresh-keeping chamber 50A is less than the specific gas adjustment volume of the second fresh-keeping chamber 50B, then the minimum cross-sectional area of the first gas distribution channel 721A is greater than or equal to the minimum cross-sectional area of the second gas distribution channel 722B.

[0129] In an embodiment, the refrigerator 100 further comprises a fan 73.

[0130] The fan 73 is used to drive the fresh-keeping gas from the gas treatment module 60 to the first gas distribution channel 721A and the second gas distribution channel 722B. In this way, by using a fan 73 in combination with the first gas distribution channel 721A and the second gas distribution channel 722B having cross-sectional areas that meet a specific relationship, the distribution of the fresh-keeping gas generated by the gas treatment module 60 in the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B can be further improved, and in the case of the highest efficiency and the lowest energy consumption, the two fresh-keeping chambers 50 can simultaneously achieve the fresh-keeping target.

[0131] In an embodiment, the refrigerator 100 further comprises a common channel 72.

[0132] The common channel 72 is connected between the gas treatment module 60 and the first gas distribution channel 721A, and the common channel 72 is also connected between the gas treatment module 60 and the second gas distribution channel 722B, so that the fresh-keeping gas at the gas treatment module 60 passes through the common channel 72, and part of the fresh-keeping gas enters the first gas distribution channel 721A and the other part enters the second gas distribution channel 722B.

[0133] The fan 73 is arranged in the common passage 72. In this way, the fresh-keeping atmosphere of the two fresh-keeping compartments 50 can be realized by one fan 73, which is high in efficiency and low in cost.

[0134] Referring to Figures 3 to 7 In an embodiment, the gas distribution module 70 comprises a gas distribution box 71 and a fan 73.

[0135] The first gas distribution passage 721A and the second gas distribution passage 722B are at least partially formed in the gas distribution box 71, respectively. The gas distribution box 71 has a guide inlet 710 which is in communication with the gas treatment module 60. The fan 73 is arranged in the gas distribution box 71, and the suction port of the fan 73 faces the guide inlet 710, and the exhaust port 731 of the fan 73 faces the first gas distribution passage 721A and the second gas distribution passage 722B.

[0136] In this way, the first gas distribution passage 721A and the second gas distribution passage 722B are arranged by arranging the gas distribution box 71 to accommodate the fan 73, so that the gas path layout between the gas treatment module 60 and the two fresh-keeping compartments 50 is realized by one gas distribution module 70 as a whole, which is simple in structure, beneficial to the planning of the gas path and the reasonable distribution of the fresh-keeping gas, and maximizes the optimization of the overall structure and the fresh-keeping effect of the refrigerator 100.

[0137] In the example shown in the drawings, the gas distribution box 71 is arranged as a hexahedral box structure, and of course, the structure is not limited thereto.

[0138] Preferably, the first gas distribution passage 721A has a first gas distribution port 721 formed on the integrated module, and the first gas distribution port 721 defines the minimum cross section of the first gas distribution passage 721A; the second gas distribution passage 722B has a second gas distribution port 722 formed on the integrated module, and the second gas distribution port 722 defines the minimum cross section of the second gas distribution passage 722B.

[0139] According to the foregoing, the cross-sectional area ratio of the first gas distribution port 721 to the second gas distribution port 722 is C:D, that is, the inner diameter size of the first gas distribution port 721 and the second gas distribution port 722 on the gas distribution box 71 is arranged to be substantially consistent with the specific gas adjustment volume ratio of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, so as to realize the distribution of the fresh-keeping gas in the two fresh-keeping compartments 50, which is simple in structure and convenient to control.

[0140] Further, referring to Figure 8 and Figure 9 and Figure 4 The gas treatment module 60 comprises a treatment box 61 and a gas treatment unit 62 arranged in the treatment box 61.

[0141] The gas treatment unit 62 is used to form fresh-keeping gas for adjusting the content of specific gas.

[0142] The gas treatment unit 62 can form the fresh-keeping gas by physical separation of air, photocatalysis, chemical reaction, electrochemical reaction, etc.

[0143] For example, in an embodiment, the gas treatment unit 62 can be an electrolytic device configured to form the fresh-keeping gas by electrochemical reaction, which includes a frame body 623, at least one anode 621, and at least one cathode 622.

[0144] The cathode 622, the anode 621, and the frame body 623 jointly enclose an inner cavity 620 that can contain electrolyte. For example, the frame body 623 includes two windows arranged oppositely, the cathode 622 is sealed and fixedly connected to one of the windows of the frame body 623, and a first side of the cathode 622 faces the inside of the frame body 623 to facilitate contact with the electrolyte in the frame body 623; a second side of the cathode 622 is exposed outside the gas treatment unit 62 from the window to contact the gas outside the gas treatment unit 62; and the anode 621 is sealed and fixedly connected to the other window of the frame body 623, so that the cathode 622, the anode 621, and the frame body 623 jointly enclose the inner cavity 620 that can contain electrolyte.

[0145] Alternatively, the cathode 622 and the frame body 623 jointly enclose the inner cavity 620 that can contain electrolyte. For example, the frame body 623 includes one or more than two windows arranged oppositely, and each window is provided with a cathode 622, and the cathodes 622 and the frame body 623 jointly enclose the inner cavity 620 that can contain electrolyte; correspondingly, the anode 621 is located inside the inner cavity 620.

[0146] The anode 621 is controllably connected to the positive pole of a power supply, and the cathode 622 is controllably connected to the negative pole of the power supply.

[0147] In this way, when the gas treatment module 60 is running, the positive pole of the power supply is connected to the anode 621, and the negative pole of the power supply is connected to the cathode 622, that is, the power supply supplies power to the gas treatment unit 62; and when the gas treatment module 60 stops running, the positive pole of the power supply is disconnected from the anode 621, and the negative pole of the power supply is disconnected from the cathode 622, that is, the power supply stops supplying power to the gas treatment unit 62.

[0148] The power supply can be a power supply loaded in the refrigerator 100, such as a battery pack, or can be an external power supply of the refrigerator 100.

[0149] The first side of the cathode 622 is exposed in the inner cavity 620, the second side is exposed outside the gas treatment unit 62, and the inside of the treatment box 61.

[0150] When the gas processing module 60 is running, i.e. in the case of power on, the cathode 622 is used to consume oxygen in the external air of the gas processing unit 62 through an electrochemical reaction, specifically, the oxygen is reduced at the cathode 622, and the reaction formula is O2+2H2O+4e - →4OH - In this way, the fresh-keeping gas in the oxygen-poor state can be formed outside the gas processing unit 62.

[0151] One side or both sides of the anode 621 are exposed to the inner cavity 620, and the anode 621 is used to generate oxygen in the inner cavity 620 through an electrochemical reaction, specifically, OH - can be oxidized at the anode 621 to generate oxygen, and the reaction formula is 4OH - →O2+2H2O+4e - to form the fresh-keeping gas in the oxygen-rich state in the inner cavity 620.

[0152] Referring to Figures 8 to 11 The processing box 61 is provided with a first gas outlet 611 and a second gas outlet 613.

[0153] The first gas outlet 611 is in communication with the inside of the processing box 61 and the outside of the gas processing unit 62, and the first gas outlet 611 is matched with the guide inlet 710, so that the fresh-keeping gas in the oxygen-poor state can flow from the processing box 61 into the gas distribution box 71; and the second gas outlet 613 is communicated to the inner cavity 620 of the gas processing unit 62 through a pipeline, so that the fresh-keeping gas in the oxygen-rich state can flow out of the processing box 61.

[0154] In the embodiment shown in the figure, the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B can have the oxygen-poor fresh-keeping function, and correspondingly, the guide inlet 710 of the gas distribution box 71 is arranged in communication with the first gas outlet 611, so that the fresh-keeping gas in the oxygen-poor state flowing out of the first gas outlet 611 flows to the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0155] Correspondingly, in this embodiment, the third fresh-keeping compartment 50C of the refrigerator 100 is arranged to have the oxygen-rich fresh-keeping function, and correspondingly, the third fresh-keeping compartment 50C can be in communication with the second gas outlet 613, so that the fresh-keeping gas in the oxygen-rich state flowing out of the second gas outlet 613 flows to the third fresh-keeping compartment 50C.

[0156] Of course, in a variant embodiment, the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B can have the oxygen-rich fresh-keeping function, and correspondingly, the guide inlet 710 of the gas distribution box 71 is arranged in communication with the second gas outlet 613, so that the fresh-keeping gas in the oxygen-rich state flowing out of the second gas outlet 613 flows to the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0157] Furthermore, revisit Figure 3 The refrigerator 100 also includes a first return air passage 741A and a second return air passage 742B.

[0158] 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.

[0159] 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.

[0160] The first return air passage 741A and the second return air passage 742B are also arranged in parallel; and the minimum cross-sectional area ratio of the first return air passage 741A and the second return air passage 742B is E:F. Where A≥B, E≥F and E:F is between A:4B / 5 and A:6B / 5; or, A<B, E<F and E:F is between A:4B / 5 and A:6B / 5.

[0161] This means that if the specific gas adjustment volume of the first fresh-keeping compartment 50A is greater than or equal to the specific gas adjustment volume of the second fresh-keeping compartment 50B, then the minimum cross-sectional area of ​​the first return gas channel 741A is greater than or equal to the minimum cross-sectional area of ​​the second return gas channel 742B. Conversely, if the specific gas adjustment volume of the first fresh-keeping compartment 50A is less than the specific gas adjustment volume of the second fresh-keeping compartment 50B, then the minimum cross-sectional area of ​​the first return gas channel 741A is less than the minimum cross-sectional area of ​​the second return gas channel 742B.

[0162] Furthermore, satisfying the relationship between A, B, E, and F allows for more precise control of the distribution of preservative gases when performing modified atmosphere storage in the first preservation compartment 50A and the second preservation compartment 50B. This ensures that both preservation compartments 50 achieve their preservation goals in the shortest time and with the highest efficiency, which not only improves the preservation effect but also reduces the energy consumption of the refrigerator 100 during modified atmosphere storage.

[0163] In one specific embodiment, C:D = A:B and E:F = A:B can be set.

[0164] In one embodiment, the first return gas passage 741A and the second return gas passage 742B are at least partially formed in the gas distribution box 71.

[0165] For example, referFigure 6 The gas distribution box 72 further comprises a guide outlet 740.

[0166] The guide outlet 740 is in communication with the gas processing module 60; the first return gas passage 741A has a first return gas port 741 formed on the gas distribution box 72, the first return gas port 741 defining the minimum cross section of the first return gas passage 741A; similarly, the second return gas passage 742B has a second return gas port 742 formed on the gas distribution box 72, the first return gas port 741 defining the minimum cross section of the second return gas passage 742B.

[0167] In combination with the foregoing, the cross sectional area ratio of the first return gas port 741 and the second return gas port 742 is E:F, which is set to be substantially consistent with the specific gas adjustment volume ratio of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B, so as to achieve the distribution of the fresh-keeping gas in the two fresh-keeping chambers 50, which is simple in structure and convenient to control.

[0168] Further, based on the foregoing structure, when the fan 73 is running, under the driving of the fan 73, the gas in the first fresh-keeping chamber 50A enters the gas distribution box 71 via the first return gas port 741, then flows out of the guide outlet 740, and then flows to the gas processing module 60, is processed by the gas processing module 60 into fresh-keeping gas (for example, adjusting the volume ratio of a specific gas), and then flows into the gas distribution box 71 via the guide inlet 710, and then exits the gas distribution box 71 via the first gas distribution port 721, and finally enters the first fresh-keeping chamber 50A.

[0169] At the same time, when the fan 73 is running, under the driving of the fan 73, the gas in the second fresh-keeping chamber 50B enters the gas distribution box 71 via the second return gas port 742, then flows out of the guide outlet 740, and then flows to the gas processing module 60, is processed by the gas processing module 60 into fresh-keeping gas (for example, adjusting the volume ratio of a specific gas, and for example, reducing the oxygen content), and then flows into the gas distribution box 71 via the guide inlet 710, and then exits the gas distribution box 71 via the second gas distribution port 722, and finally enters the second fresh-keeping chamber 50B.

[0170] Correspondingly, referring to Figure 5 The processing box 61 is further provided with an air inlet 612.

[0171] The air inlet 612 is in communication with the inside of the processing box 61 and the outside of the gas processing unit 62, and the air inlet 612 is matched with the guide outlet 740, so that the gas flowing out of the guide outlet 740 can return to the processing box 61 through the air inlet 612, so as to facilitate the gas processing unit 62 to adjust the content of a specific gas (for example, reducing the oxygen content).

[0172] In an embodiment, the gas distribution box 71 is fixedly assembled on the top wall of the processing box 61.

[0173] Correspondingly, the first air outlet 611 and the air inlet 612 are located on the top wall of the processing box 61, and the guide inlet 710 and the guide outlet 740 are located on the bottom wall of the air distribution box 71; the first air outlet 611 and the guide inlet 710 are vertically opposite and sealingly connected, and the air inlet 612 and the guide outlet 740 are vertically opposite and sealingly connected.

[0174] Referring to Figure 2 In an embodiment, the first fresh-keeping compartment 50A is located above the air distribution box 71, and has a first air supply hole and a first air return hole 52A.

[0175] The first joint 712 is connected to the first air supply hole 51A in an upward and downward plug-in manner, and the third joint 714 is connected to the first air return hole 52 in an upward and downward plug-in manner. In this way, the air distribution module 70 and the first fresh-keeping compartment 50A can be quickly and simply assembled.

[0176] In addition, the second fresh-keeping compartment 50B is located below the first fresh-keeping compartment 50A, and the combination of the air distribution module 70 and the gas processing module 60 is arranged on the side of the second fresh-keeping compartment 50B.

[0177] Further, the refrigerator 100 further comprises a first door body for opening and closing the first fresh-keeping compartment 50A and a second door body for opening and closing the second fresh-keeping compartment 50B.

[0178] For example, the first fresh-keeping compartment 50A is formed in a first fresh-keeping cylinder, the front of the first fresh-keeping cylinder is provided with a first opening, and the first door body is arranged as a drawer type door body and is fitted at the first opening, so as to be pulled forward to open the first fresh-keeping compartment 50A and pushed backward to close the first fresh-keeping compartment 50A.

[0179] Similarly, the second fresh-keeping compartment 50B is formed in a second fresh-keeping cylinder, the front of the second fresh-keeping cylinder is provided with a second opening, and the second door body is arranged as a drawer type door body and is fitted at the second opening, so as to be pulled forward to open the second fresh-keeping compartment 50B and pushed backward to close the second fresh-keeping compartment 50B.

[0180] At present, the first door body and the second door body are not limited to be arranged as drawer type door bodies, but can also be arranged as any one of a pivoting door body, a left-right sliding door body, etc.

[0181] Referring to Figure 11 The refrigerator 100 further comprises a control system 90, and the control system 90 comprises a first signal indicator 911, a second signal indicator 912 and a controller 92.

[0182] The first signaler 911 is used to sense the opening and closing of the first door body. For example, when the first door body opens the first fresh-keeping compartment 50A, the first signaler 911 senses and generates a first door-opening signal; when the first door body closes the first fresh-keeping compartment 50A, the first signaler 911 senses and generates a first door-closing signal.

[0183] Similarly, the second signaler 912 is used to sense the opening and closing of the second door body. For example, when the second door body opens the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second door-opening signal; when the second door body closes the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second door-closing signal.

[0184] The controller 92 is 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.

[0185] 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.

[0186] See Figure 14 , the controller 92 is configured as:

[0187] When it is determined that both the first door body and the second door body are closed, control the blower and the gas treatment module to start and start timing until the operation target duration;

[0188] Within the target duration: If it is determined that both the first door body and the second door body are open, control the gas treatment module 60 to close and the blower 73 to keep running; if it is determined that only one of the first door body and the second door body is open, control the gas treatment module 60 to keep running and the blower 73 to close.

[0189] In this way, on the one hand, during controlled atmosphere fresh-keeping, based on the setting of the minimum cross-sectional area ratio of the first gas distribution channel 721A and the second gas distribution channel 722B described above, the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B can simultaneously reach the fresh-keeping target in the shortest time;

[0190] In another aspect, if both the first door and the second door are opened during the modified atmosphere storage, the gas treatment module 60 is turned off (e.g. powered off) while the fan 73 is kept running, so that the gas in the gas treatment module 60 is blown into the first storage compartment 50A and the second storage compartment 50B, and then escapes to the outside through the first opening and the second opening, so as to achieve the effect of dehumidification, thereby avoiding damage to the electrical components due to excessive humidity in the gas treatment module 60.

[0191] In another aspect, if only the first door is opened or only the second door is opened during the modified atmosphere storage, the gas treatment module 60 is kept running while the fan 73 is turned off, so that the gas treatment module 60 continues the electrochemical reaction to prepare the fresh-keeping gas. Thus, after the first door and the second door are both closed again, the two storage compartments can reach the fresh-keeping target in the shortest time, and the service life of the gas treatment module 60 is also avoided from being reduced due to frequent opening and closing of the gas treatment module 60.

[0192] In one embodiment, the controller 92 is further configured to:

[0193] During the target time period: if it is determined that both the first door and the second door are opened, the gas treatment module 60 is turned off, the fan 73 is kept running and the rotation speed is increased.

[0194] Thus, if both the first door and the second door are opened during the modified atmosphere storage, the fan 73 can achieve dehumidification at a higher rotation speed, so as to achieve the optimal dehumidification effect in a relatively short time.

[0195] In addition, the controller 92 is further configured to:

[0196] During the target time period: if it is determined that both the first door and the second door are closed, the gas treatment module 60 and the fan 73 are turned off after the target time period, and after a preset interval time period, the fan 73 and the gas treatment module 60 are turned on and start timing, and run for a second target time period; wherein the second target time period is less than the target time period.

[0197] Thus, if both the first door and the second door are closed, the gas treatment module 60 is run for a second target time period after a certain time interval after the gas treatment module 60 is run for the target time period in the previous cycle, and the second target time period is relatively shorter. Thus, the fresh-keeping atmosphere in the two storage compartments can be maintained stable.

[0198] Furthermore, the controller 92 can be used to implement each step of the following control method, which will not be described here.

[0199] In particular, the controller 92 can include or be associated with one or more storage elements or non-transitory computer-readable storage media, such as a RAM, a ROM, an EEPROM, an EPROM, a flash device, a magnetic disk, or other suitable storage device, including combinations thereof. These storage devices can be separate components from the processor or can be included on-board within the processor. Additionally, these storage devices can store information and / or data accessible by the one or more processors, including instructions that can be executed by the one or more processors. It will be appreciated that the instructions can be software written in any suitable programming language, or can be implemented in hardware. Additionally or alternatively, the instructions can be executed logically and / or virtually using separate thread logic on the one or more processors.

[0200] For example, the controller 92 can be operable to execute programmed instructions or microcontrol code associated with operational cycles of the refrigerator 100. In this regard, the instructions can 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. Also, it should be noted that the controller 92 disclosed herein is capable of and can be operable to perform any of the methods, method steps, or portions of methods disclosed herein. For example, in some embodiments, the methods disclosed herein can be embodied in programmed instructions stored in memory and executed by the controller 92.

[0201] Continuing with reference to FIG. 1, the controller 92 can be operable to monitor the first fresh food compartment 50A and the second fresh food compartment 50B for a door opening event. For example, the controller 92 can be operable to monitor the first fresh food compartment 50A for a door opening event via the first signal 911. Also, for example, the controller 92 can be operable to monitor the second fresh food compartment 50B for a door opening event via the second signal 912. Figure 14 The present application also provides a control method, which includes the following steps.

[0202] Step S1: After the refrigerator 100 is powered on, it is monitored whether the first fresh food compartment 50A and the second fresh food compartment 50B are both closed, if yes, the fan 73 and the gas treatment module 60 are controlled to be turned on and start timing t.

[0203] For example, the first signal 911 can be used to sense the opening and closing of the first door body, and the controller 92 monitors whether the first fresh food compartment 50A is closed based on this; for another example, the second signal 912 can be used to sense the opening and closing of the second door body, and the controller 92 monitors whether the second fresh food compartment 50B is closed based on this.

[0204] The "if yes" in step S1 refers to the first fresh food compartment 50A and the second fresh food compartment 50B being closed; and conversely, "if no" refers to at least one of the first fresh food compartment 50A and the second fresh food compartment 50B not being closed.

[0205] Step S2: Monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened within the target time length t1.

[0206] In Figure 14 , step S2 is also the process phase of "t≥t1"→"the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed".

[0207] Step S3: If it is monitored in step S2 that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both opened (i.e. the "the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in the corresponding Figure 14 of step S2 is "all no"), control the gas treatment module 60 to be closed, the fan 73 to keep running, and return to step S1.

[0208] Step S4: If it is monitored in step S2 that only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is opened (i.e. the "the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in the corresponding Figure 14 of step S2 is "other"), control the gas treatment module 60 to keep running, the fan 73 to be closed, and return to step S1.

[0209] Preferably, in step S3, the rotating speed of the fan 73 is controlled to be increased, that is, the rotating speed of the fan 73 is greater than the rotating speed of the fan 73 in step S1.

[0210] In an embodiment, the control method further comprises the following steps.

[0211] Step S5: If it is monitored in step S2 that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both not opened (i.e. the "the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in the corresponding Figure 14 of step S2 is "all yes"), after the target time length t1 is reached, the fan 73 and the gas treatment module 60 are turned off, and a preset interval time length t2 is started to be counted to enter step S6.

[0212] Here, steps S2 to S5 mean that if the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both kept closed during the target time length t1, the gas treatment module 60 and the fan 73 are turned off after the fresh-keeping treatment is completed.

[0213] Step S6: Monitor whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened within the preset interval time length t2.

[0214] In Figure 14 , step S6 is also the process phase of "t'≥t2"→"the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed".

[0215] Step S7: If it is monitored in step S6 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is opened (i.e. the corresponding Figure 14 “first fresh-keeping compartment closed and second fresh-keeping compartment closed” in step S6 is “all no”), then when the timing reaches the preset interval t2 (i.e. Figure 14 “t'≥t2” in step S7 is “yes”), step S8 is entered.

[0216] Step S8: The fan 73 and the gas treatment module 60 are controlled to be opened again, and after running for a second target time t3, the fan 73 and the gas treatment module 60 are turned off, and after a second preset interval t4, step S1 is returned.

[0217] In Figure 14 step S8, the process phase corresponding to “fan and gas treatment module opened; start timing t” → “t≥t3” is “yes” → “turn off the fan and the gas treatment module, and start timing t0” → “t0≥t4” is “yes”.

[0218] The second target time t3 is less than the target time t1, and the second preset interval t4 is not less than the preset interval t2.

[0219] In this way, the duration t3 of the fresh-keeping gas regulation operation in step S8 is less than the duration t1 of the fresh-keeping gas regulation operation in step S1, and under the condition of stabilizing the fresh-keeping gas atmosphere environment of the two fresh-keeping compartments, the energy consumption is saved, and the interval t4 before the long-time fresh-keeping gas regulation operation (i.e. the fresh-keeping gas regulation in step 1) is performed again is relatively long, which can further reduce the energy consumption and improve the service life of the gas treatment module 60.

[0220] In addition, the control method further comprises the following steps.

[0221] Step S9: If it is monitored in step S6 that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened (i.e. the corresponding Figure 14 “first fresh-keeping compartment closed and second fresh-keeping compartment closed” in step S6 is “all no”), the gas treatment module 60 is controlled to be closed, the fan 73 is controlled to be opened, and step S1 is returned.

[0222] In this way, the gas treatment module 60 can be controlled to reduce the humidity, especially the humidity around the gas treatment unit 62.

[0223] Preferably, in step S9, the rotating speed of the fan 73 is controlled to be increased, i.e. the rotating speed of the fan 73 is greater than the rotating speed of the fan 73 in steps S1, S8 and S10.

[0224] The rotation speed of the fan 73 in the step S3 is greater than the rotation speed of the fan 73 in the steps S1, S8 and S10.

[0225] Step S10: If only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is opened in the step S6 (i.e. the condition of the step S6 is "the first fresh-keeping compartment is opened, and the second fresh-keeping compartment is opened"), the time t0' is restarted, the gas treatment module 60 is controlled to be turned on, and the fan 73 is controlled to be turned off. After it is monitored that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed, the gas treatment module 60 is controlled to be kept running, and the fan 73 is controlled to be turned on. Until the condition of "t0'≥t5" is "yes", the fan 73 and the gas treatment module 60 are turned off. After a second preset interval time t4, the step S1 is returned. Figure 12 Figure 12 Step S10: If only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is opened in the step S6 (i.e. the condition of the step S6 is "the first fresh-keeping compartment is opened, and the second fresh-keeping compartment is opened"), the time t0' is restarted, the gas treatment module 60 is controlled to be turned on, and the fan 73 is controlled to be turned off. After it is monitored that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed, the gas treatment module 60 is controlled to be kept running, and the fan 73 is controlled to be turned on. Until the condition of "t0'≥t5" is "yes", the fan 73 and the gas treatment module 60 are turned off. After a second preset interval time t4, the step S1 is returned.

[0226] That is, in the step S10, as shown in the step S10, if the condition of "t0'≥t5" is "yes", the fan 73 and the gas treatment module 60 are turned off, and the time t0" is started. Until the condition of "t0"≥t4" is "yes", the step S1 is returned. Figure 12

[0227] In this way, by the above control method, on the one hand, during the modified atmosphere preservation, based on the setting of the minimum cross-sectional area ratio of the first gas distribution channel 721A to the second gas distribution channel 722B, the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B can reach the preservation target at the shortest time.

[0228] On the other hand, during the modified atmosphere preservation, if the first door and the second door are both opened, the gas treatment module 60 is turned off (e.g. powered off) and the fan 73 is kept running. In this way, 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, so as to achieve the effect of dehumidification, and avoid damage to the electrical elements due to excessive humidity in the gas treatment module 60.

[0229] On the other hand, during the modified atmosphere preservation, if only the first door is opened or only the second door is opened, the gas treatment module 60 is kept running and the fan 73 is turned off. In this way, the gas treatment module 60 continuously undergoes electrochemical reaction to prepare the preservation gas. In this way, after the first door and the second door are both closed, the two fresh-keeping compartments can reach the preservation target at the shortest time, and the service life of the gas treatment module 60 is also avoided from being wasted due to frequent opening and closing of the gas treatment module 60.

[0230] ​​The second embodiment

[0231] Next, referring to Figures 13 to 16 The second embodiment of the present application provides a refrigerator 100, which is different from the first embodiment in that a gas adjusting damper 75 is arranged at the second gas distribution passage 722B, and a humidity control function is added to the second fresh-keeping compartment 50B. Only these different points will be described below, and the same parts will not be described again.

[0232] In this embodiment, the gas distribution module 70 includes the gas adjusting damper 75.

[0233] The gas adjusting damper 75 is arranged at the second gas distribution passage 722B and is used to open or close the second gas distribution passage 722B.

[0234] In this way, by arranging the first gas distribution passage 721A and the second gas distribution passage 722B and based on the arrangement of the gas adjusting fan 73 and the gas adjusting damper 75, the fresh-keeping gas distributed to the second gas distribution passage 722B is adjusted under the state control of the gas adjusting damper 75, so that more fresh-keeping environments can be realized to meet different needs of the refrigerator 100, and the fresh-keeping effect is excellent.

[0235] In addition, the gas adjusting damper 75 can be controlled to close the second gas distribution passage 722B. That is, at this time, the fresh-keeping gas driven by the gas adjusting fan 73 can only enter the first fresh-keeping compartment 50A along the first gas distribution passage 721A, and cannot enter the second fresh-keeping compartment 50B.

[0236] On the contrary, the gas adjusting damper 75 can be controlled to open the second gas distribution passage 722B. That is, at this time, the fresh-keeping gas driven by the gas adjusting fan 73 can enter the first fresh-keeping compartment 50A along the first gas distribution passage 721A, and can also enter the second fresh-keeping compartment 50B along the second gas distribution passage 722B.

[0237] In yet another embodiment, the gas adjusting damper 75 can also be arranged to be adjustable in opening degree, that is, for example, under the control of the controller 92, the gas adjusting damper 75 can adjust the opening degree of the second gas distribution passage 722B, and further adjust the respective proportions of the fresh-keeping gas entering the first gas distribution passage 721A and the second gas distribution passage 722B.

[0238] For example, the gas adjusting damper 75 can open the second gas distribution passage 722B at different rotation angles, or open the second gas distribution passage 722B at different moving distances (so that the opening area size of the second gas distribution passage 722B is different).

[0239] In an embodiment, the air adjusting fan 73 can be arranged to be adjustable in rotation speed, for example, the controller 92 described later can control the air adjusting fan 73 to be turned on or off, and can also control the air adjusting fan 73 to operate at different rotation speeds. In this way, multiple operation modes of the refrigerator 100 can be realized to cope with multiple combinations of requirements of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B, and the stability and effect of the fresh-keeping atmosphere of the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B can be improved.

[0240] Next, the first air supply passage 721A has a first air supply port 721 formed on the integrated module; the first air supply port 721 is connected to the first air supply hole 51A of the first fresh-keeping chamber 50A.

[0241] Correspondingly, the first air return passage 741A has a first air return port 741 formed on the integrated module; the first air return port 741 is connected to the first air return hole 52A of the first fresh-keeping chamber 50A.

[0242] Similarly, the second air supply passage 722B has a second air supply port 722 formed on the integrated module; the second air supply port 722 is connected to the second air supply hole 51B of the second fresh-keeping chamber 50B.

[0243] Correspondingly, the second air return passage 742B has a second air return port 742 formed on the integrated module; the second air return port 742 is connected to the second air return hole 52B of the second fresh-keeping chamber 50B.

[0244] In this way, when the air adjusting fan 73 operates, under the driving of the air adjusting fan 73, the gas in the first fresh-keeping chamber 50A enters the air supply box 71 through the first air return port 741, then flows out through the guide outlet 740, and then flows to the gas processing module 60, is processed into fresh-keeping gas (for example, the volume ratio of a specific gas is adjusted) by the gas processing module 60, and then flows into the air supply box 71 through the guide inlet 710, and then leaves the air supply box 71 through the first air supply port 721, and finally enters the first fresh-keeping chamber 50A.

[0245] When the fan 73 operates, if the air adjusting door 75 opens the second air supply passage 722B at this time, under the driving of the fan 73, the gas in the second fresh-keeping chamber 50B enters the air supply box 71 through the second air return port 742, then flows out through the guide outlet 740, and then flows to the gas processing module 60, is processed into fresh-keeping gas (for example, the volume ratio of a specific gas is adjusted, and for example, the oxygen content is reduced) by the gas processing module 60, and then flows into the air supply box 71 through the guide inlet 710, and then leaves the air supply box 71 through the second air supply port 722, and finally enters the second fresh-keeping chamber 50B.

[0246] In an embodiment, one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is located above the integrated module, and the other is located beside the integrated module. For example, as shown in the figure, the second fresh-keeping compartment 50B is located below the first fresh-keeping compartment 50A, and the integrated module composed of the gas distribution module 70 and the gas treatment module 60 is arranged beside the second fresh-keeping compartment 50B.

[0247] In this way, the positional relationship between the two fresh-keeping compartments 50 and the integrated module can make the communication structure between the integrated module and the two fresh-keeping compartments 50 more concise, reduce the use of pipelines, make assembly more convenient, and make the layout more reasonable.

[0248] Next, the refrigerator 100 includes a first fresh-keeping box body 54A and a first door body.

[0249] The first fresh-keeping box body 54A encloses the first fresh-keeping compartment 50A inside, and the first door body is arranged in front of the first fresh-keeping box body 54A and is used to open and close the first fresh-keeping compartment 50A. Of course, in a variant embodiment, the first fresh-keeping box body 54A can also be opened at the top, and the first door body is arranged above the first fresh-keeping box body 54A.

[0250] Similarly, the second fresh-keeping box body 54B encloses the second fresh-keeping compartment 50B inside, and the second door body is arranged in front of the second fresh-keeping box body 54B and is used to open and close the second fresh-keeping compartment 50B. Of course, in a variant embodiment, the second fresh-keeping box body 54B can also be opened at the top, and the second door body is arranged above the second fresh-keeping box body 54B.

[0251] The second fresh-keeping box body 54B includes a box body and a gas barrier and moisture permeable film 55B.

[0252] For example, the box body is provided with a through window penetrating from the inside to the outside, the gas barrier and moisture permeable film 55B seals and covers the through window, and the gas barrier and moisture permeable film 55B is configured to allow water vapor to permeate out of the second fresh-keeping compartment 50B.

[0253] The gas barrier and moisture permeable film 55B can allow water vapor to permeate out, but does not allow gas exchange between the second fresh-keeping compartment 50B and the outside. The specific structure and material thereof are implemented by known technologies in the art, and are not described herein.

[0254] In this way, by arranging the gas barrier and moisture permeable film 55B, the second fresh-keeping compartment 50B can have multiple fresh-keeping environments, and can achieve more diversified fresh-keeping functions, for example, the second fresh-keeping compartment 50B can achieve adjustable humidity.

[0255] In an embodiment, the through window is arranged at the lower rear portion of the second fresh-keeping compartment 50, but is not limited thereto.

[0256] Further, the refrigeration system 30 of the refrigerator 100 comprises a chiller 32 for providing cold energy to the refrigerator 100 so as to maintain a low-temperature storage environment in each of the compartments.

[0257] The air supply duct 15 of the refrigerator 100 is in communication with a refrigeration cabin accommodating the chiller 32, and the air supply duct 15 has a first air supply port 151, a second air supply port 152 and a humidity control damper 33.

[0258] The air supply duct 15 is in communication with the outer periphery of the second fresh-keeping compartment 50B through the first air supply port 151 and the second air supply port 152, that is, the cold air flowing out of the first air supply port 151 and the second air supply port 152 flows along the outer surface of the second fresh-keeping box body 54B at the outer periphery of the second fresh-keeping compartment 50B, so as to reduce the temperature in the second fresh-keeping compartment 50B.

[0259] Here, compared with the first air supply port 151, the cold air flowing out of the second air supply port 152 flows towards the gas-barrier moisture-permeable film 55B, that is, compared with the first air supply port 151, the second air supply port 152 is closer to the gas-barrier moisture-permeable film 55B. For example, the second air supply port 152 in the figure is directly opposite the gas-barrier moisture-permeable film 55B, but is not limited thereto.

[0260] The humidity control damper 33 can be used to open and close the second air supply port 152, so that, through the arrangement of the second air supply port 152 and the humidity control damper 33, the humidity control in the second fresh-keeping compartment 50B can be further realized.

[0261] For example, when the humidity control damper 33 opens the second air supply port 152, if the refrigeration fan 31 is turned on, the cold air blown out of the second air supply port 152 can accelerate the airflow speed on the surface of the gas-barrier moisture-permeable film 55B, so as to promote the water vapor in the second fresh-keeping compartment 50B to be accelerated to permeate through the gas-barrier moisture-permeable film 55B, thereby reducing the humidity in the second fresh-keeping compartment 50B and realizing dry-area fresh-keeping.

[0262] Further, through the control of the time length of the opening of the second air supply port 152 by the humidity control damper 33 or in addition to the control of the time length of the opening of the refrigeration fan 31, the humidity interval in the second fresh-keeping compartment 50B can be further controlled, for example, the longer the time length of the opening of the second air supply port 152 by the humidity control damper 33 and the time length of the opening of the refrigeration fan 31, the lower the humidity required in the second fresh-keeping compartment 50B.

[0263] For another example, when the humidity control damper 33 closes the second air supply port 152, the cold air blown out of the second air supply port 152 can accelerate the airflow speed on the surface of the gas-barrier moisture-permeable film 55B, so as to promote the water vapor in the second fresh-keeping compartment 50B to be accelerated to permeate through the gas-barrier moisture-permeable film 55B, thereby reducing the humidity in the second fresh-keeping compartment 50B and realizing wet-area fresh-keeping.

[0264] In an embodiment, the air supply duct 15 further has a third air supply port 153.

[0265] The air supply duct 15 passes through the third air supply port 153 to the outer periphery of the first fresh-keeping compartment 50A, that is, the cold air flowing out of the third air supply port 153 will flow along the outer surface of the first fresh-keeping box body 54A at the outer periphery of the first fresh-keeping compartment 50A, so as to reduce the temperature in the first fresh-keeping compartment 50A.

[0266] In this embodiment, the first fresh-keeping compartment 50A can be set as a fresh-keeping humid zone, and no gas-permeable membrane or other structure capable of reducing humidity is arranged; of course, in a variant embodiment, the first fresh-keeping compartment 50A can also be set as the same as the second fresh-keeping compartment 50B, and a series of structures capable of realizing humidity regulation can be arranged.

[0267] The control system 90 includes a first signaler 911 and a second signaler 912.

[0268] The first signaler 911 is configured to sense the opening and closing of the first door body. For example, when the first door body opens the first fresh-keeping compartment 50A, the first signaler 911 senses and generates a first door opening signal; when the first door body closes the first fresh-keeping compartment 50A, the first signaler 911 senses and generates a first door closing signal.

[0269] Similarly, the second signaler 912 is configured to sense the opening and closing of the second door body. For example, when the second door body opens the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second door opening signal; when the second door body closes the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second door closing signal.

[0270] The controller 92 is configured to be connected to the first signaler 911, the second signaler 912, the air conditioning fan 73, the air conditioning damper 75, and the gas treatment module 60, and is configured to control the operation of the air conditioning fan 73 and the gas treatment module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0271] Further, the control system 90 further includes a mode collector 94.

[0272] The mode collector 94 is configured to collect the working mode of the second fresh-keeping compartment 50B in response to a user input, that is, the user can select and input the working mode of the second fresh-keeping compartment 50B.

[0273] The mode collector 94 can be a mechanical knob, a keyboard, or a touch writing screen electrically connected to the controller 92, but is not limited thereto.

[0274] The controller 92 is configured to control the dehumidification damper 33 to open or close the second air supply port 152 and control the air conditioning damper 75 to open or close the second air distribution passage 922B according to the working mode.

[0275] In an embodiment, the working mode includes an air conditioning dry zone mode, an air conditioning wet zone mode, and an air conditioning free mode.

[0276] The controller is configured to control the gas treatment module 60 and the air conditioning fan 73 to be turned on, the air conditioning damper 75 to open the second air distribution passage 722B, the dehumidification damper 33 to open the second air supply port 152, and the refrigeration fan 31 to be turned on in the air conditioning dry zone mode.

[0277] In the air conditioning wet zone mode, the controller controls the gas treatment module 60 and the air conditioning fan 73 to be turned on, and the air conditioning damper 75 to open the second air distribution passage 722B, and the dehumidification damper 33 to close the second air supply port 152.

[0278] In the air conditioning free mode, the controller controls the gas treatment module 60 and the air conditioning fan 73 to be turned on, the air conditioning damper 75 to close the second air distribution passage 722B, and the dehumidification damper 33 to close the second air supply port 152.

[0279] In addition, in an embodiment, after the refrigerator 100 is powered on, in the air conditioning free mode, the controller 92 controls the gas treatment module 60 and the air conditioning fan 73 to be turned on according to the first door closing signal. That is, as long as the first door is closed, the gas treatment module 60 and the air conditioning fan 73 can be turned on at the same time.

[0280] Further, in the air conditioning free mode, after the gas treatment module 60 and the air conditioning fan 73 are turned on, the controller 92 controls the gas treatment module 60 to be turned off and the air conditioning fan 73 to be turned on according to the first door opening signal. That is, when the first door is opened, the air conditioning fan 73 is used to blow the gas in the gas treatment module 60 out of the first fresh-keeping compartment 50A, so as to blow away the water vapor long-term stored in the gas treatment module 60, and avoid that the humidity is too large to cause the service life of the gas treatment module 60 to be reduced.

[0281] Especially, in the air conditioning free mode, when the gas treatment module 60 is turned off and the air conditioning fan 73 is turned on, the speed of the air conditioning fan 73 can be controlled to be larger (i.e., larger than the speed when the gas treatment module 60 and the air conditioning fan 73 are turned on at the same time), so as to accelerate the dehumidification by means of the short time when the first door is opened.

[0282] In contrast, after the refrigerator 100 is powered on, the controller 92 controls the gas processing module 60 and the air conditioner fan 73 to be turned on according to the first door closing signal and the second door closing signal in the dry air conditioning mode and the humid air conditioning mode. That is, the gas processing module 60 and the air conditioner fan 73 are turned on only when the first door body and the second door body are both closed.

[0283] After the gas processing module 60 and the air conditioner fan 73 are turned on in the dry air conditioning mode and the humid air conditioning mode, the controller 92 controls the gas processing module 60 to be turned off, the air conditioner fan 73 to be turned on and the speed to be increased, and the air conditioner damper 75 to be closed according to the first door opening signal.

[0284]

Third Embodiment

[0285] Next, referring to Figure 17 The third embodiment of the present application also provides a refrigerator 100, which is different from the second embodiment in that a second air conditioner damper 75A is additionally arranged in the first gas distribution channel 721A on the basis of the air conditioner damper 75B of the second gas distribution channel 722B in the second embodiment.

[0286] In this way, the opening and closing of the first gas distribution channel 721A can be realized under the control of the controller 92 by additionally arranging the second air conditioner damper 75A, so as to adjust the supply of fresh-keeping gas in the first fresh-keeping chamber 50A.

[0287] The other technical contents are basically the same as those of the second embodiment, and will not be described again.

[0288]

Fourth Embodiment

[0289] Referring to Figures 18 to 26 The fourth embodiment of the present application provides a refrigerator 100, which is different from the first embodiment in that the specific structure and control method of the gas distribution module 70. Only these different points will be described below, and the other same parts will not be described again.

[0290] In this embodiment, the gas distribution module 70 further comprises a gravity baffle 75.

[0291] The fan 73 is provided with two or more gears with different speeds, that is, the fan 73 has two or more gears to be selected when it is running, and the speed of the fan 73 is different in different gears.

[0292] The gravity baffle 75 is arranged at the second gas distribution channel 722B, and corresponding to the different gears of the fan 73, the gravity baffle 75 can be rotated to different angles under the driving of the airflow in the second gas distribution channel 722B.

[0293] Therefore, by setting the first air distribution passage 721A and the second air distribution passage 722B, and based on the setting of the at least two gears of the fan 73 and the setting of the gravity baffle 75, the rotation angle of the gravity baffle 75 is different at different gears of the fan 73, and the proportion of the fresh-keeping gas distributed into the second air distribution passage 722B is adjusted, so that when the fresh-keeping gas is adjusted in the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B, the fresh-keeping target of the two fresh-keeping chambers 50 can be achieved in the shortest time and with the highest efficiency under different statuses of the refrigerator 100, which can not only improve the fresh-keeping effect, but also reduce the energy consumption of the refrigerator 100 during the fresh-keeping gas adjustment.

[0294] In an embodiment, when the rotation speed of the fan 73 does not exceed the first threshold value v01, the gravity baffle 75 cannot be driven to rotate by the airflow, and the second air distribution passage 722B is completely blocked by the gravity baffle 75. That is, when the fan 73 operates at a gear with a rotation speed not exceeding v01, the gravity baffle 75 closes the second air distribution passage 722B, and the fresh-keeping gas driven by the operation of the fan 73 can only enter the first fresh-keeping chamber 50A along the first air distribution passage 721A, and cannot enter the second fresh-keeping chamber 50B.

[0295] When the rotation speed of the fan 73 reaches the second threshold value v02 or above, the gravity baffle 75 is driven to rotate by the airflow to an angle X, and the second air distribution passage 722B is completely opened by the gravity baffle 75. That is, when the fan 73 operates at a gear with a rotation speed reaching v02, the gravity baffle 75 completely opens the second air distribution passage 722B, and the rotation angle of the gravity baffle 75 reaches the maximum, that is, even if the rotation speed of the fan 73 is further increased, the rotation angle of the gravity baffle 75 will not change, but will remain at angle X.

[0296] At this time, the fresh-keeping gas driven by the operation of the fan 73 can only enter the first fresh-keeping chamber 50A along the first air distribution passage 721A, and cannot enter the second fresh-keeping chamber 50B.

[0297] Correspondingly, the fan 73 is provided with a first gear with a rotation speed v1 and a second gear with a rotation speed v2, v1≤v01, and v02≤v2.

[0298] Therefore, based on the above, at the first gear, the gravity baffle 75 cannot be driven to rotate by the airflow, and the second air distribution passage 722B is completely blocked by the gravity baffle 75, and the fresh-keeping gas driven by the operation of the fan 73 can only enter the first fresh-keeping chamber 50A along the first air distribution passage 721A; and at the second gear, the gravity baffle 75 is driven to rotate by the airflow to an angle X, and the second air distribution passage 722B is completely opened by the gravity baffle 75.

[0299] In addition, the fan 73 also has a third gear with a rotation speed v3, v01 < v3 < v02. In this way, in the third gear, the gravity baffle 75 is driven by the airflow to rotate an angle Y, and the gravity baffle 75 is not fully open to the second air distribution channel 722B, that is, the degree of opening to the second air distribution channel 722B is smaller than that in the second gear.

[0300] For another example, when the fan 73 is in the first gear, 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 not rotating or rotates an angle of 0 under the action of gravity.

[0301] When the fan 73 is in the first gear, the gravity baffle 75 is parallel to the extension direction of the second air distribution channel 722B, at this time, the gravity baffle 75 rotates an angle X of 90°.

[0302] When the fan 73 changes from the first gear to the third gear and then to the second gear, the included angle between the gravity baffle 75 and the extension direction of the second air distribution channel 722B decreases step by step.

[0303] In this way, by setting the third gear, the proportion of the fresh-keeping gas distributed into the second air distribution channel 722B can be accurately controlled, which is more conducive to coping with various complex situations of the two fresh-keeping compartments 50.

[0304] Further, in an embodiment, one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is located above the integrated module, and the other is located at the side of the integrated module. For example, optionally, as shown in the figure, the second fresh-keeping compartment 50B is located below the first fresh-keeping compartment 50A, and the integrated module composed of the air distribution module 70 and the gas treatment module 60 is arranged at the side of the second fresh-keeping compartment 50B.

[0305] The first air distribution channel 721A and the second air distribution channel 722B are located in the integrated module, and are arranged in layers above and below.

[0306] In this way, the positional relationship between the two fresh-keeping compartments 50, the integrated module, and the positional relationship between the first air distribution channel 721A and the second air distribution channel 722B can make the overall structure of the refrigerator 100 more concise, more convenient to assemble, and more reasonable in layout.

[0307] In an 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 connected to the first air supply hole 51A of the first fresh-keeping compartment 50A in a plug-in connection.

[0308] Similarly, the second air supply passage 722B has a second air supply port 722 formed on the integrated module, and the second air supply port 722 is connected to the second air supply hole 51B of the second fresh-keeping chamber 50B.

[0309] In an embodiment, a gravity baffle 75 is arranged at the second air supply port 722 and used to shield the second air supply port 722; as described above, when the rotating speed of the fan 73 is not greater than the first threshold value v01, the gravity baffle 75 is attached to the periphery of the second air supply port 722 to completely shield the second air supply passage 722B; and when the rotating speed of the fan 73 is greater than the first threshold value v01, the free lower end of the gravity baffle 75 is rotated toward the second air supply hole 51B under the driving of the air flow flowing out of the second air supply port 722, so as to partially or completely open the second air supply passage 722B, so that the fresh-keeping gas can flow out of the second air supply port 722 and be blown into the second air supply hole 51B.

[0310] Further, the first air return passage 741A has a first air return port 741 formed on the integrated module; the first air return port 741 is connected to the first air return hole 52A of the first fresh-keeping chamber 50A in a top-and-bottom insertion manner. When the fan 73 is running, the gas in the first fresh-keeping chamber 50A enters the first air return passage 741A in sequence via the first air return hole 52A and the first air return port 741 under the driving of the fan 73.

[0311] Similarly, the second air return passage 722B has a second air return port 742 formed on the integrated module, and the second air return port 742 is connected to the second air return hole 52B of the second fresh-keeping chamber 50B. When the fan 73 is running, the gas in the second fresh-keeping chamber 50B enters the second air return passage 722B in sequence via the second air return hole 52B and the second air return port 742 under the driving of the fan 73.

[0312] In terms of structure, the air supply module 70 further comprises an air supply box 71 arranged on the top wall of the processing box 61.

[0313] The first air supply passage 721A, the second air supply passage 722B, the first air return passage 741A and the second air return passage 742B are respectively at least partially formed in the integrated module.

[0314] In an embodiment, the first air supply passage 721A, the second air supply passage 722B, the first air return passage 741A and the second air return passage 742B can be respectively at least partially formed in the air supply box 71, or formed between the processing box 61 and the air supply box 71.

[0315] For example, in the embodiment shown in the figure, the top of the processing box 61 is provided with a plurality of air deflectors, and the second return air passage 742B and the second air distribution passage 722B are formed between the air deflectors; the air distribution box 71 includes a bottom cover and a top cover, the bottom cover is assembled on the processing box 61 and has a partition plate 716, and the top cover is assembled on the bottom cover and is provided at the bottom with a plurality of air deflecting ribs, and the first return air passage 741A and the first air distribution passage 721A are formed between the air deflecting ribs.

[0316] 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.

[0317] The first return air passage 741A is communicated to the air inlet 612 of the processing box 61 through the via hole 717 formed on the partition plate 716.

[0318] In addition, the fan 73 is arranged between the air distribution box 71 and the processing box 61, and the air suction port of the fan 73 faces the guide inlet 710, and the air exhaust port 731 of the fan 73 faces the first air distribution passage 721A and the second air distribution passage 722B.

[0319] Next, referring to Figure 18 The second fresh-keeping chamber 50B includes a fresh-keeping cylinder 55 and an air guide cylinder 54 fixed outside the fresh-keeping cylinder 55. The fresh-keeping gas at the second air supply hole 51B flows through the air guide cylinder 54 and flows downward into the interior of the second fresh-keeping chamber 50B through a plurality of openings on the fresh-keeping cylinder 55, so as to facilitate the modified atmosphere fresh-keeping of the food. Such a structure can improve the uniformity of the distribution of the fresh-keeping gas in the interior of the second fresh-keeping chamber 50B.

[0320] Further, the refrigerator 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.

[0321] Referring to Figure 25 The refrigerator 100 further includes a control system 90, and the control system 90 includes a first signal indicator 911, a second signal indicator 912 and a controller 92.

[0322] The first signal indicator 911 is used for sensing the opening and closing of the first door body 53A. For example, when the first door body 53A opens the first fresh-keeping chamber 50A, the first signal indicator 911 senses and generates a first door opening signal; when the first door body 53A closes the first fresh-keeping chamber 50A, the first signal indicator 911 senses and generates a first door closing signal.

[0323] 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.

[0324] The controller 92 is 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.

[0325] 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.

[0326] Refer Figure 26 , the controller 92 is configured as follows:

[0327] 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 rotational speed is v2, and the gas treatment module 60 to start, and start timing until the operation target duration;

[0328] During 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 rotational speed to decrease below the first threshold v01.

[0329] 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, then the gas treatment module 60 is closed (for example, powered off) while the blower 73 remains 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 open port and the second open port, thereby achieving the effect of dehumidification and avoiding damage to electrical components due to excessive humidity in the gas treatment module 60;

[0330] In another aspect, if only the first door 53A is opened or only the second door 53B is opened during the modified atmosphere storage, the gas treatment module 60 is kept running, and the fan 73 is turned off or the rotating speed of the fan 73 is reduced to below the first threshold v01. In this way, the gas treatment module 60 continuously produces the fresh-keeping gas through the electrochemical reaction, but the fresh-keeping gas is temporarily stored in the gas treatment module 60 and is not blown away by the fan 73. Thus, after the first door 53A and the second door 53B are both closed, the two fresh-keeping compartments can reach the fresh-keeping target in the shortest time, and the service life of the gas treatment module 60 is also avoided from being reduced due to frequent opening and closing of the gas treatment module 60.

[0331] In an embodiment, the controller 92 is further configured to:

[0332] In the target time period: if it is determined that the first door 53A and the second door 53B are both opened, the gas treatment module 60 is controlled to be closed, the fan 73 is kept running and the rotating speed of the fan 73 is increased to v2”>v2.

[0333] In this way, if the first door 53A and the second door 53B are both opened during the modified atmosphere storage, the fan 73 can dehumidify at a greater rotating speed, so that the optimal dehumidification effect can be achieved in a relatively short time when the first door 53A and the second door 53B are both opened.

[0334] In addition, the controller 92 is further configured to:

[0335] In the target time period: if it is determined that the first door 53A and the second door 53B are always closed, the gas treatment module 60 and the fan 73 are controlled to be closed after the target time period, and after a preset interval time period, the fan 73 is controlled to be opened and the rotating speed v2’ of the fan 73 is controlled to be v02≤v2’≤v2, preferably v2’<v2, and the gas treatment module 60 is controlled to be opened, and the timing is restarted until the second target time period is reached. The second target time period is less than the target time period.

[0336] In this way, in the case that the first door 53A and the second door 53B are always closed, after the gas treatment module 60 is operated for the target time period in the previous time, the gas treatment module 60 is operated for a second target time period after a certain time interval. The second target time period is relatively shorter, so that the fresh-keeping atmosphere of the two fresh-keeping compartments can be maintained stable. In addition, the rotating speed of the fan 73 during the modified atmosphere storage of the second target time period is relatively small, so that the fresh-keeping gas can be transported and the noise can be reduced.

[0337] Furthermore, the controller 92 can be used to implement each step of the following control method, which will not be repeated here.

[0338] Continuing to refer to Figure 26 An embodiment of the present application further provides a control method of the refrigerator 100, each step of the control method comprising the following.

[0339] Step S1: After the refrigerator 100 is powered on, it is monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed, if yes, the fan 73 is controlled to be turned on at a speed v2, the gas processing module 60 is controlled to be turned on, and a time t is started.

[0340] For example, the first signaler 911 can be used to sense the opening and closing of the first door body 53A, and the controller 92 monitors whether the first fresh-keeping compartment 50A is closed based on this; for another example, the second signaler 912 can be used to sense the opening and closing of the second door body 53B, and the controller 92 monitors whether the second fresh-keeping compartment 50B is closed based on this.

[0341] The "if yes" in step S1 refers to that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed; and conversely, the "if no" refers to that at least one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is not closed.

[0342] Step S2: Within a target time t1 after the time t is started, it is monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened.

[0343] In Figure 27 Step S2 is also the process phase of "t≥t1"→"the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed".

[0344] Step S3: If it is monitored in step S2 that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both opened (i.e. the case corresponding to "t≥t1"→"the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in step S2 is "all yes"), the gas processing module 60 is controlled to be turned off, the fan 73 is controlled to keep running, and the process returns to step S1. Figure 27 In the case of "the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in step S2, when it is "all yes", the process returns to step S1.

[0345] Step S4: If it is monitored in step S2 that only one of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is opened (i.e. the case corresponding to "t≥t1"→"the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in step S2 is other than "all yes" and "all no"), the gas processing module 60 is controlled to keep running, and the fan 73 is controlled to be turned off or the speed of the fan 73 is reduced to below a first threshold v01, for example, the speed v1. Figure 27 In the case of "the first fresh-keeping compartment is closed, and the second fresh-keeping compartment is closed" in step S2, when it is other than "all yes" and "all no", the gas processing module 60 is controlled to keep running, and the fan 73 is controlled to be turned off or the speed of the fan 73 is reduced to below a first threshold v01.

[0346] Preferably, in step S3, the speed of the fan 73 is controlled to be increased to v2">v2, that is, the speed of the fan 73 is greater than the speed of the fan 73 in step S1.

[0347] In an embodiment, the control method further comprises the following steps.

[0348] Step S5: If it is monitored in step S2 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is opened (i.e. the case of “first fresh-keeping compartment closed and second fresh-keeping compartment closed” in step S2 is “all”), the fan 73 and the gas treatment module 60 are turned off after the target time length t1 is reached, and a timing t’ is started, and step S6 is entered. Figure 27

[0349] Here, steps S2 to S5 refer to the case that if the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are kept closed all the time during the target time length t1, the gas treatment module 60 and the fan 73 are turned off after the fresh-keeping treatment is completed.

[0350] Step S6: It is monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened within the preset interval time length t2 after the timing.

[0351] In the case of “t’≥t2” in step S6, the case of “first fresh-keeping compartment closed and second fresh-keeping compartment closed” is “all”. Figure 27

[0352] Step S7: If it is monitored in step S6 that neither the first fresh-keeping compartment 50A nor the second fresh-keeping compartment 50B is opened (i.e. the case of “first fresh-keeping compartment closed and second fresh-keeping compartment closed” in step S6 is “all”), the fan 73 is controlled to be turned on at a speed v2’ and the gas treatment module 60 is re-started, and the fan 73 and the gas treatment module 60 are turned off after a second target time length t3 is reached, and the process returns to step S1 after a second preset interval time length t4. Figure 27 Figure 27

[0353] Here, the second target time length t3 is less than the target time length t1, the second preset interval time length t4 is not less than the preset interval time length t2, and v02≤v2’≤v2, preferably v2’<v2.

[0354] In this way, the fresh-keeping atmosphere environment of the two fresh-keeping compartments 50 is stabilized, the energy consumption is saved, the fan speed v2’ is relatively small, and the noise is reduced while the airflow is driven.

[0355] In addition, the control method further comprises the following steps.

[0356] Step S8: If it is monitored in step S6 that either one or both of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is opened (i.e. the case of “first fresh-keeping compartment closed and second fresh-keeping compartment closed” in step S6 is “not all”), the fan 73 is controlled to be turned on at a speed v2’ and the gas treatment module 60 is re-started, and the fan 73 and the gas treatment module 60 are turned off after a second target time length t3 is reached, and the process returns to step S1 after a second preset interval time length t4.​​​​Figure 27 If the first fresh-keeping compartment is closed and the second fresh-keeping compartment is closed, the gas treatment module 60 is controlled to be closed, the fan 73 is controlled to be turned on, and the process returns to step S1.

[0357] In this way, the gas treatment module 60 can be controlled to reduce the humidity, especially the humidity around the gas treatment unit 62.

[0358] Preferably, in step S8, the rotating speed of the fan 73 is controlled to be increased to v2”>v2, that is, the rotating speed of the fan 73 is greater than the rotating speed of the fan 73 in step S1.

[0359] In addition, preferably, in step S4, if it is monitored in step S2 that only the first fresh-keeping compartment 50A is opened, the gas treatment module 60 is controlled to keep running, the fan 73 is controlled to be turned off or the rotating speed of the fan 73 is controlled to be reduced to below the first threshold v01, and then the process proceeds to step S41; if it is monitored in step S2 that only the second fresh-keeping compartment 50B is opened, the gas treatment module 60 is controlled to keep running, the fan 73 is controlled to be turned off or the rotating speed of the fan 73 is controlled to be reduced to below the first threshold v01, and then the process proceeds to step S42.

[0360] In step S41, after it is monitored that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed, the gas treatment module 60 is controlled to keep running, the fan 73 is controlled to run at the rotating speed v3, and the timer t is restarted. After the timer t reaches the target time length t1, the fan 73 and the gas treatment module 60 are turned off, and the timer t’ is restarted again, and the process proceeds to step S6. In this embodiment, v01

[0361] In step S42, after it is monitored that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed, the gas treatment module 60 is controlled to keep running, the fan 73 is controlled to run at the rotating speed v2, and the timer t is restarted. After the timer t reaches the target time length t1, the fan 73 and the gas treatment module 60 are turned off, and the timer t’ is restarted again, and the process proceeds to step S6.

[0362] In this way, by controlling the rotating speed of the fan 73 in steps S41 and S42, the proportion of the fresh-keeping gas allocated to each fresh-keeping compartment 50 is optimized for the case that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened separately, while the service life of the fan 73 and the gas treatment module 60 is ensured. In this way, the fresh-keeping target of the two fresh-keeping compartments 50 can be achieved in the shortest time, and the optimization of the allocation of the fresh-keeping gas is greatly improved.

[0363]

Fifth Embodiment

[0364] Next, the process of the fifth embodiment will be described with reference to FIG. 8. Figures 27 to 33The fifth embodiment of the present application provides a refrigerator 100, which is different from the fourth embodiment above only in that the air distribution module 70 comprises two air fans 73A, 73B and the corresponding control method. The following will only expand on these different points, and the same parts will not be repeated.

[0365] In the present embodiment, the air distribution module 70 comprises a first air fan 73A and a second air fan 73B.

[0366] The first air fan 73A is used to drive the fresh-keeping gas to flow from the gas treatment module 60 to the first air distribution passage 721A, and the second air fan 73B is used to drive the fresh-keeping gas to flow from the gas treatment module 60 to the second air distribution passage 722B.

[0367] The controller 92 of the refrigerator 100 is connected to the first air fan 73A, the second air fan 73B and the gas treatment module 60, and is used to control the operation of the first air fan 73A, the second air fan 73B and the gas treatment module 60.

[0368] In this way, by setting the first air distribution passage 721A and the second air distribution passage 722B, and the first air fan 73A and the second air fan 73B, the proportion of the fresh-keeping gas distributed to the first air distribution passage 721A and the second air distribution passage 722B can be realized by controlling the first air fan 73A and the second air fan 73B, and then the fresh-keeping target of the two fresh-keeping compartments 50 can be achieved in the shortest time and with the highest efficiency under different present conditions of the refrigerator 100. In this way, not only the fresh-keeping effect can be improved, but also the energy consumption of the refrigerator 100 during fresh-keeping air conditioning can be reduced.

[0369] In an embodiment, the first air fan 73A can be arranged in the first air distribution passage 721A. Alternatively, in a variant embodiment, the first air fan 73A can be arranged in the common passage 72, and the exhaust port 731A of the first air fan 73A is arranged at the intersection of the common passage 72 and the first air distribution passage 721A, specifically, for example, at the upstream end of the first air distribution passage 721A. These embodiments can all achieve the effect of the first air fan 73A driving the fresh-keeping gas into the first air distribution passage 721A. Of course, the arrangement position of the first air fan 73A is not limited thereto, and it can also be arranged at other positions that can achieve the effect.

[0370] Similarly, in an embodiment, the second fan 73B can be arranged in the second air distribution passage 721B. Alternatively, in a variant embodiment, the second fan 73B can be arranged in the common passage 72, and the exhaust port 731B of the second fan 73B is arranged at the intersection of the common passage 72 and the second air distribution passage 721B, for example, at the upstream end of the second air distribution passage 721B. These embodiments can all achieve the effect of driving the fresh-keeping gas into the second air distribution passage 721B by the second fan 73B. Of course, the arrangement position of the second fan 73B is not limited thereto, and the second fan 73B can also be arranged at other positions that can achieve the effect.

[0371] Next, referring to Figures 6 to 11 The gas treatment module 60 is provided with a first gas outlet 611, a second gas outlet, and a third gas outlet 613.

[0372] The suction port 732A of the first fan 73A faces the first gas outlet 611, so that the fresh-keeping gas of the gas treatment module 60 flows to the first fan 73A through the first gas outlet 611, and is blown by the first fan 73A to the first air distribution passage 721A.

[0373] Similarly, the suction port of the second fan 73B faces the second gas outlet, so that the fresh-keeping gas of the gas treatment module 60 flows to the second fan 73B through the second gas outlet, and is blown by the second fan 73B to the second air distribution passage 722B.

[0374] In an embodiment, the first gas outlet 611 and the second gas outlet can be connected as a whole as shown in the figure, and can also be varied to be arranged independently of each other.

[0375] In addition, the first fan 73A and the second fan 73B are arranged in a substantially up-down manner, and the first fan 73A is located above the second fan 73B.

[0376] In addition, referring to Figure 31 The refrigerator 100 further comprises a first signal indicator 911, a second signal indicator 912, and a controller 92.

[0377] The first signal indicator 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 signal indicator 911 senses and generates a first door opening signal; when the first door body 53A closes the first fresh-keeping compartment 50A, the first signal indicator 911 senses and generates a first door closing signal.

[0378] Similarly, the second signaler 912 is configured 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 opening-door signal; when the second door body 53B closes the second fresh-keeping compartment 50B, the second signaler 912 senses and generates a second closing-door signal.

[0379] The controller 92 is connected to the first signaler 911, the second signaler 912, the first fan 73A, the second fan 73B and the gas processing module 60, and is configured to control the operation of the fans 73 and the gas processing module 60 according to the signals sensed by the first signaler 911 and the second signaler 912.

[0380] In some embodiments, the first signaler 911 and the second signaler 912 can be any one of a pressure sensor, an infrared sensor, etc., and can also be integrated into a signal unit with the controller 92.

[0381] In some embodiments, the first fan 73A and the second fan 73B are configured to have adjustable rotating speeds. For example, the controller 92 can control the first fan 73A to operate at different rotating speeds, or control the second fan 73B to operate at different rotating speeds. In this way, the refrigerator 100 can have multiple operating modes to cope with various situations of the refrigerator 100, thereby improving the stability and effect of the fresh-keeping atmosphere of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, and also improving the service life of the gas processing module 60 and reducing energy consumption.

[0382] For example, in some embodiments, the controller 92 is configured to control the first fan 73A, the second fan 73B and the gas processing module 60 to be in a dormant mode, a dehumidification mode, a double-moisture-adjusting mode, a first single-moisture-adjusting mode and a second single-moisture-adjusting mode according to the signals sensed by the first signaler 911 and the second signaler 912.

[0383] In the dormant mode, the first fan 73A, the second fan 73B and the gas processing module 60 are all turned off. That is, the dormant mode means that the refrigerator 100 does not perform moisture adjustment.

[0384] In the dehumidification mode, the gas processing module 60 is turned off, the first fan 73A operates at a rotating speed V1m, and the second fan 73B operates at a rotating speed V2m. That is, the dehumidification mode is to simply blow air into the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0385] In the double air conditioning mode, the gas processing module 60 is turned on, the first fan 73A runs at the speed V1, and the second fan 73B runs at the speed V2. That is, in the double air conditioning mode, the fresh-keeping gas is supplied to the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B at the same time, so that the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B are air-conditioned and fresh-kept.

[0386] In the first single air conditioning mode, the gas processing module 60 is turned on, the first fan 73A runs, and the second fan 73B is turned off. Similarly, in the second single air conditioning mode, the gas processing module 60 is turned on, the first fan 73A is turned off, and the second fan 73B runs. That is, in the first single air conditioning mode, the fresh-keeping gas is only supplied to the first fresh-keeping chamber 50A, and in the second single air conditioning mode, the fresh-keeping gas is only supplied to the second fresh-keeping chamber 50B.

[0387] Preferably, V1V1m and V2V2m. That is, the speeds of the first fan 73A and the second fan 73B in the dehumidification mode are greater than those in the double air conditioning mode. In the dehumidification mode, the fresh-keeping gas is not supplied to the first fresh-keeping chamber 50A and the second fresh-keeping chamber 50B, but the gas in the gas processing module 60 is promoted to be discharged, so that the dehumidification effect is achieved, and the service life of the gas processing module 60 is improved.

[0388] As an optional and preferable scheme, in the first single air conditioning mode, the first fan 73A runs at the speed V1, and in the second single air conditioning mode, the second fan 73B runs at the speed V2. Of course, it is not limited thereto.

[0389] Further, the controller 92 is further configured to control the first fan 73A, the second fan 73B and the gas processing module 60 to be in the first strong air conditioning mode and the second strong air conditioning mode according to the signals sensed by the first signal indicator 911 and the second signal indicator 912.

[0390] In the first strong air conditioning mode, the gas processing module 60 is turned on, the first fan 73A runs at the speed V1m, and the second fan 73B runs at the speed V2n, V2nV2. That is, in the first strong air conditioning mode, the speed of the first fan 73A is greater than that in the double air conditioning mode, and the speed of the second fan 73B is smaller than that in the double air conditioning mode. Further, compared with the double air conditioning mode, the proportion of the fresh-keeping gas supplied to the first fresh-keeping chamber 50A is higher.

[0391] Similarly, when the second strong air conditioning mode is selected, the gas processing module 60 is turned on, the first air fan 73A is operated at a speed of V1n, and the second air fan 73B is operated at a speed of V2m, V1n

[0392] Next, referring to FIG. 4, the refrigerator 100 further includes a refrigeration air fan 31, a first temperature sensor 931, and a second temperature sensor 932. Figure 13

[0393] The refrigeration air fan 31 is configured to drive the cold air in the refrigeration compartment to flow to the outer periphery of the first fresh food compartment 50A and the outer periphery of the second fresh food compartment 50B. In this way, when the cold air flows to the outer periphery of the first fresh food compartment 50A and the outer periphery of the second fresh food compartment 50B, the first fresh food compartment 50A and the second fresh food compartment 50B can be cooled by indirect heat exchange.

[0394] Of course, in a variant embodiment, the cold air can also directly flow into the interior of the first fresh food compartment 50A and the second fresh food compartment 50B, but this way can achieve cooling, but can cause the preservation environment in the first fresh food compartment 50A and the second fresh food compartment 50B, for example, the concentration of a specific gas to change due to the refrigeration cooling.

[0395] The first temperature sensor 931 is arranged inside or on the outer wall of the first fresh food compartment 50A and is configured to sense the first temperature of the first fresh food compartment 50A. Similarly, the second temperature sensor 932 is arranged inside or on the outer wall of the second fresh food compartment 50B and is configured to sense the second temperature of the second fresh food compartment 50B.

[0396] The controller 92 is further configured to control the operation of the refrigeration air fan 31, the refrigeration system 30, the first air fan 73A, the second air fan 73B, and the gas processing module 60 according to the first temperature and the second temperature, and the refrigeration air fan 31, the refrigeration system 30, the first temperature sensor 931, and the second temperature sensor 932.

[0397] For example, in an embodiment, the controller 92 is configured to control the refrigeration air fan 31 and the refrigeration system 30 to be in a refrigeration mode and a waste cooling mode.

[0398] When the refrigeration mode is selected, the refrigeration air fan 31 and the refrigeration system 30 are both turned on, so that the cold air can be prepared by the refrigerator, and at the same time, the refrigeration air fan 31 blows the cold air to the first fresh food compartment 50A and the second fresh food compartment 50B to cool the first fresh food compartment 50A and the second fresh food compartment 50B.​

[0399] In the residual cooling mode, the refrigeration fan 31 is turned on, and the refrigeration system 30 is turned off, so that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are cooled by the residual cooling capacity of the refrigerator.

[0400] In addition, the controller 92 can also be configured to control the first fan 73A, the second fan 73B and the gas processing module 60 to be in a cooling mode.

[0401] In the cooling mode, the gas processing module 60 is turned on, the first fan 73A operates at a speed V1k, and the second fan 73B operates at a speed V2k, wherein V1k

[0402] In an embodiment, V1n

[0403] Furthermore, the controller 92 can also be used to implement each step of the following control method, for example, each step in Figure 32 and Figure 33 , which will not be repeated here.

[0404] Continuing to refer to the drawings, an embodiment of the present application also provides a control method of the refrigerator 100, each step of the control method is as follows.

[0405] Step S1, after the refrigerator 100 is powered on, whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed is monitored.

[0406] For example, the first signaler 911 can be used to sense the opening and closing of the first door body 53A, and the controller 92 monitors whether the first fresh-keeping compartment 50A is closed based on this; for example, the second signaler 912 can be used to sense the opening and closing of the second door body 53B, and the controller 92 monitors whether the second fresh-keeping compartment 50B is closed based on this.

[0407] In step S1, if the result is no, that is, the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are not all closed, the sleep mode is executed; but if the result is yes, that is, the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, the dual-modified atmosphere mode is executed. That is, as long as either one or both of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened, the dual-modified atmosphere mode is not executed, but is always waiting.

[0408] And, in step S1, after the double-modus mode is executed, before the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B both reach the target of the gas modulation, it is continuously monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both opened.

[0409] In the present application, no matter the first fresh-keeping compartment 50A or the second fresh-keeping compartment 50B, the so-called "reaching the target of the gas modulation" means that the volume ratio / concentration of the specific gas in a fresh-keeping compartment 50 reaches the set range of the fresh-keeping compartment 50.

[0410] The way of judging "reaching the target of the gas modulation" can be detected by the specific gas concentration sensor arranged in each fresh-keeping compartment 50 to determine whether "reaching the target of the gas modulation", or can be determined by the total amount of fresh-keeping gas sent into each fresh-keeping compartment 50, or can be determined by the duration of sending fresh-keeping gas into each fresh-keeping compartment 50.

[0411] In step S2, if it is monitored in step S1 that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both opened, the dehumidification mode is executed and returns to step S1. In this way, the gas in the gas processing module 60 can be blown into the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B, and then escaped to the outside through the first opening and the second opening, so as to achieve the effect of dehumidification and avoid damage to the electrical elements caused by excessive humidity in the gas processing module 60.

[0412] Further, step S2 also includes: if it is monitored in step S1 that only the first fresh-keeping compartment 50A is opened, the second single-modus mode is executed and returns to step S1; if only the second fresh-keeping compartment 50B is opened, the first single-modus mode is executed and returns to step S1. In this way, if only the first door body 53A is opened or only the second door body 53B is opened, the fresh-keeping gas is only blown into the fresh-keeping compartment 50 which is kept closed, which avoids unnecessary gas modulation and frequent opening and closing of the gas processing module 60 to avoid the service life of the gas processing module 60.

[0413] Further, step S2 also includes: if it is monitored in step S1 that only the first fresh-keeping compartment 50A is opened, the second single-modus mode is executed and returns to step S1; if only the second fresh-keeping compartment 50B is opened, the first single-modus mode is executed and returns to step S1. In this way, if only the first door body 53A is opened or only the second door body 53B is opened, the fresh-keeping gas is only blown into the fresh-keeping compartment 50 which is kept closed, which avoids unnecessary gas modulation and frequent opening and closing of the gas processing module 60 to avoid the service life of the gas processing module 60.

[0414] Next, step S3: within a preset interval after the timing in step S2, it is monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened, and different modes are executed according to the monitoring results.

[0415] For example, in step S3, if it is monitored that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are opened, the dehumidification mode is executed, and the process returns to step S1. In this way, the dehumidification effect can also be achieved.

[0416] For another example, in step S3, if it is monitored that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, the dual-MAP mode is executed when the preset interval time length is reached. In other words, if the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are not opened within the preset interval time length, the process enters a periodic cycle state, for example, the dual-MAP mode is executed once every preset interval time length, so as to stably maintain the stability of the fresh-keeping environment in each fresh-keeping compartment 50.

[0417] For another example, in step S3, if it is monitored that only the first fresh-keeping compartment 50A is opened, the first strong-MAP mode is executed after the first fresh-keeping compartment 50A is closed, and the process is terminated after the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B both reach the target MAP, and returns to step 1.

[0418] Similarly, if it is monitored that only the second fresh-keeping compartment 50B is opened, the second strong-MAP mode is executed after the second fresh-keeping compartment 50B is closed, and the process is terminated after the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B both reach the target MAP, and returns to step 1.

[0419] In this way, when only the first door body 53A is opened or only the second door body 53B is opened, the first strong-MAP mode and the second strong-MAP mode can greatly shorten the time required for the two fresh-keeping compartments 50 to reach the target MAP at the same time, and improve the MAP efficiency.

[0420] Next, the refrigerator 100 is powered on, and it is monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed. Figure 33 The control method provided in the embodiment of the present application also includes the following steps.

[0421] In step S100, after the refrigerator 100 is powered on, it is monitored whether the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are both closed.

[0422] For example, the first signaler 911 can be used to sense the opening and closing of the first door body 53A, and the controller 92 monitors whether the first fresh-keeping compartment 50A is closed based on this. For another example, the second signaler 912 can be used to sense the opening and closing of the second door body 53B, and the controller 92 monitors whether the second fresh-keeping compartment 50B is closed based on this.

[0423] In step S100, if the determination result is negative, meaning that the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are not both closed, then the hibernation mode is executed; however, if the determination result is positive, meaning that both the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are closed, then the dual-atmosphere mode is executed. In other words, if any one or both of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are open, the dual-atmosphere mode is not executed, and the system waits indefinitely.

[0424] As can be seen, the process up to step S100 corresponds to the previously described step S1, that is, the process before executing the dual controlled atmosphere mode is basically the same in steps S100 and S1.

[0425] Furthermore, in step S100, after executing the dual controlled atmosphere mode, before both the first preservation chamber 50A and the second preservation chamber 50B reach the controlled atmosphere target, the first temperature or the second temperature is continuously monitored to see if it exceeds its respective maximum threshold. For example, it is determined whether the first temperature T1 reaches the first temperature threshold T1m and whether the second temperature T2 reaches the second temperature threshold T2m.

[0426] Next, step S200: In step S100, if T1 < T1m and T2 < T2m (that is, corresponding to...) Figure 33 If the process condition "T1≥T1m, T2≥T2m" is judged as "all negative", then the dual controlled atmosphere mode continues; however, if either T1≥T1m or T2≥T2m is true, or both are true (i.e., corresponding to...), then the process continues. Figure 33 If the process "T1≥T1m,T2≥T2m" is judged as "other", then the residual cooling mode is executed.

[0427] That is, at this time, the residual cooling of the refrigeration unit is used to attempt to cool down the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B.

[0428] Furthermore, in step S200, after executing the residual cooling mode, after the first time period, it is determined whether the first temperature T1 and the second temperature T2 continue to rise; and if neither T1 nor T2 continues to rise, the current state is maintained until the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the controlled atmosphere target and then the hibernation mode is executed; however, if either or both of T1 and T2 continue to rise, then step S300 is entered.

[0429] In step S300: the cooling mode is executed (that is, the cooling system 30 is turned on to cool down in an attempt to cool down more quickly), and after the second time period, it is checked again whether the first temperature T1 and the second temperature T2 continue to rise.

[0430] Further, if neither T1 nor T2 is still increasing, the current state is maintained until the hibernation mode is executed after the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the target atmosphere; however, if either or both of T1 and T2 is still increasing, the cooling-down mode is executed, that is, the amount of fresh-keeping gas supplied to the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B is reduced, and the speed of the atmosphere preservation is slowed down to reduce the sharp influence of the atmosphere preservation on the temperature fluctuation.

[0431] Next, the cooling-down mode is maintained until the hibernation mode is executed after the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B reach the target atmosphere.

[0432] As can be seen from the above control method, Figure 33 The control method shown can greatly utilize the residual cold of the refrigerator, and in combination with the setting of the cooling-down mode, the atmosphere preservation environment and the low-temperature environment of the first fresh-keeping compartment 50A and the second fresh-keeping compartment 50B are maintained in a dual manner, the adverse effects of the sharp rise of the environment caused by the atmosphere preservation are avoided, and the effect of further improving the preservation effect of the refrigerator 100 is achieved.

[0433] Of course, the above control method is only one of the operation processes that can be achieved by the mechanical structure of the refrigerator 100 of the present application, and the refrigerator 100 of the present application can also be operated in other manners, that is, on the basis of the structure of the first fan 73A and the second fan 73B of the present application, the control method of the refrigerator 100 is not limited to Figure 32 and Figure 33 the preferred embodiments shown in

[0434] Next, refer to Figure 34 the sixth embodiment of Figure 35 the seventh embodiment of

[0435] The refrigerator 100 of the present application, based on the gas distribution module 70, in the case of setting two parallel gas distribution channels, can also be as shown in Figure 34 the first air door 75A is arranged on the first gas distribution channel 721A, and the second air door 75B is arranged on the second gas distribution channel 722B, so as to open and close the corresponding gas distribution channel through the air door, thereby achieving control of the supply of fresh-keeping gas to each fresh-keeping compartment 50.

[0436] Alternatively, as shown in Figure 35 the first fan 73A and the first air door 75A are arranged on the first gas distribution channel 721A at the same time, and the second fan 73B and the second air door 75B are arranged on the second gas distribution channel 722B at the same time, so as to open and close the corresponding gas distribution channel, and adjust the gas flow through the air door and the fan, thereby achieving accurate control of the supply of fresh-keeping gas to each fresh-keeping compartment 50.

[0437] These are further optimized designs based on the gas distribution module 70 of the present application, and these embodiments fully embody the advantages of the inventive concept of the present application, that is, to achieve gas flow distribution while simplifying the pipeline, rationalizing the distribution, and facilitating assembly.

[0438] For the sixth and seventh embodiments, the other technical contents are basically the same as the first to fifth embodiments, and will not be repeated.

[0439] In summary, the beneficial effects of the present application are at least that by setting the gas distribution module 70 and assembling the gas distribution module 70 in the gas treatment module 60 to form an integrated module, at the same time, the gas distribution module 70 has multiple parallel gas distribution channels to supply the same type of fresh-keeping gas to each fresh-keeping chamber 50, so that the gas flow supply of multiple fresh-keeping chambers 50 is realized based on the gas distribution module 70, which is beneficial to the rational distribution and precise distribution of fresh-keeping gas, greatly reduces the complexity of the pipeline structure, and simplifies the installation and layout of the fresh-keeping supply pipeline of the fresh-keeping chamber 50, in addition, it can also realize more diversified combination of the fresh-keeping chamber 50, greatly improving the fresh-keeping function of the refrigerator 100.

[0440] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0441] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A refrigerator characterized by comprising: It comprises: a box body, in which two or more fresh-keeping compartments are arranged; a gas processing module for forming fresh-keeping gas, having a gas outlet for the fresh-keeping gas to flow out; a gas distribution module assembled with the gas processing module and forming an integrated module with the gas processing module, the gas distribution module comprising two or more gas distribution channels, the two gas distribution channels being connected in parallel to the gas outlet, and each of the gas distribution channels being connected to a corresponding fresh-keeping compartment.

2. The refrigerator according to claim 1, characterized in that, The gas distribution module comprises a gas distribution box, and the gas distribution channels are at least partially formed in the gas distribution box or between the gas distribution box and the gas processing module.

3. The refrigerator according to claim 2, characterized in that, The two or more fresh-keeping compartments comprise a first fresh-keeping compartment and a second fresh-keeping compartment, and the two gas distribution channels comprise a first gas distribution channel and a second gas distribution channel arranged in parallel; The first gas distribution channel is connected to the first fresh-keeping compartment; The second gas distribution channel is connected to the second fresh-keeping compartment.

4. The refrigerator according to claim 3, characterized in that, The gas distribution module further comprises a common channel, and the first and second gas distribution channels are connected to the gas processing module through the common channel.

5. The refrigerator according to claim 4, characterized in that, The gas distribution module further comprises a fan for driving the fresh-keeping gas to flow from the gas processing module to the first and second gas distribution channels.

6. The refrigerator according to claim 5, characterized in that, The minimum cross-sectional area ratio of the first gas distribution channel to the second gas distribution channel is C:D; Wherein, A≥B, C≥D and C:D is between A:4B / 5 and A:6B / 5; or, A 7. The refrigerator according to claim 6, characterized in that The first gas distribution channel has a first gas distribution opening formed on the integrated module, and the first gas distribution opening defines the minimum cross-section of the first gas distribution channel; The second gas distribution channel has a second gas distribution opening formed on the integrated module, and the second gas distribution opening defines the minimum cross-section of the second gas distribution channel.

8. The refrigerator according to claim 5, characterized in that, The gas distribution module further comprises a gravity baffle arranged at the second gas distribution channel; The fan is provided with two or more gears with different rotation speeds, and corresponding to different gears, the gravity baffle rotates to different angles under the driving of the airflow in the second gas distribution channel.

9. The refrigerator according to claim 8, characterized in that, The fan is provided with a first gear with a rotation speed v1, a second gear with a rotation speed v2, and a third gear with a rotation speed v3, v1≤v01, v02≤v2, v01 When the rotation speed of the fan does not exceed the first threshold value v01, the gravity baffle cannot be driven to rotate by the airflow, and it completely blocks the second gas distribution channel; when the rotation speed of the fan reaches the second threshold value v02 or above, the gravity baffle is driven to rotate by the airflow at an angle X, and the gravity baffle completely opens the second gas distribution channel.

10. The refrigerator according to claim 9, characterized in that, The first gas distribution channel has a first gas distribution opening formed on the integrated module, and the second gas distribution channel has a second gas distribution opening formed on the integrated module; The gravity baffle is arranged at the second gas distribution opening and used to shield the second gas distribution opening; the free lower end of the gravity baffle rotates away from the second gas distribution opening under the driving of the airflow flowing out of the second gas distribution opening.

11. The refrigerator according to claim 5, characterized in that, The air distribution module further comprises an air conditioning damper arranged at the second air distribution passage to open and close the second air distribution passage.

12. The refrigerator according to claim 11, characterized in that, The refrigerator further comprises: a refrigeration compartment; a refrigeration system comprising a refrigeration device arranged in the refrigeration compartment, the refrigeration device being configured to cool air in the refrigeration compartment; an air supply duct communicating with the refrigeration compartment; and a refrigeration fan configured to drive cold air in the refrigeration compartment to flow along the air supply duct to the outer periphery of the first fresh-keeping chamber and the outer periphery of the second fresh-keeping chamber.

13. The refrigerator according to claim 12, characterized in that, The refrigerator comprises: a first fresh-keeping box body surrounding the first fresh-keeping chamber inside; a second fresh-keeping box body surrounding the second fresh-keeping chamber inside, the second fresh-keeping box body comprising a box body and a gas barrier and moisture permeable membrane, the box body being provided with a through window penetrating from inside to outside, and the gas barrier and moisture permeable membrane sealingly covering the through window, the gas barrier and moisture permeable membrane being configured to allow water vapor to permeate out of the second fresh-keeping chamber.

14. The refrigerator according to claim 13, characterized in that, The air supply duct has a first air supply port, a second air supply port, and a humidity adjusting damper arranged to open and close the second air supply port; The air supply duct communicates with the outer periphery of the second fresh-keeping chamber through the first air supply port and the second air supply port to reduce the temperature in the second fresh-keeping chamber; Compared with the first air supply port, the cold air flowing out of the second air supply port flows towards the gas barrier and moisture permeable membrane.

15. The refrigerator according to claim 4, characterized in that, The air distribution module further comprises a first fan and a second fan, the first fan being configured to drive fresh-keeping gas to flow from the gas treatment module into the first air distribution passage, and the second fan being configured to drive fresh-keeping gas to flow from the gas treatment module into the second air distribution passage.

16. The refrigerator according to claim 15, characterized in that, The first fan is arranged in the first air distribution passage, or is arranged in the common passage with its exhaust port arranged at the intersection of the common passage and the first air distribution passage; The second fan is arranged in the second air distribution passage, or is arranged in the common passage with its exhaust port arranged at the intersection of the common passage and the second air distribution passage.

17. The refrigerator of claim 15, wherein, The first fan and the second fan are respectively arranged to be adjustable in rotational speed.

18. The refrigerator according to any one of claims 4, 5, 15, characterized in that, The air distribution module further comprises a first air conditioning damper and a second air conditioning damper, the first air conditioning damper being arranged at the second air distribution passage to open and close the second air distribution passage, and the first air conditioning damper being arranged at the first air distribution passage to open and close the second air distribution passage.

19. The refrigerator according to claim 4, characterized in that, The first fresh-keeping chamber is located above the integrated module, and the second fresh-keeping chamber is located laterally of the integrated module; The first air distribution passage and the second air distribution passage are arranged in layers one above the other; The first air distribution passage has a first air distribution port formed on the integrated module, and the first air distribution port is connected to a first air supply hole of the first fresh-keeping chamber in a plug-in manner one above the other; The second air distribution passage has a second air distribution port formed on the integrated module, and the second air distribution port is opposite to a second air supply hole of the second fresh-keeping chamber.

20. The refrigerator of claim 19, wherein, The top of the gas treatment module is provided with a plurality of air deflectors, and the second air distribution passage is formed between the air deflectors; The air distribution box comprises: A bottom cover assembled on the gas processing module and having a horizontal partition plate, the first and second gas distribution channels being distributed on the upper and lower sides of the partition plate; A top cover assembled on the bottom cover and having a plurality of air guide ribs at the bottom, the first gas distribution channels being formed between the air guide ribs.

21. The refrigerator according to claim 1, characterized in that, The gas distribution module further comprises a plurality of return gas channels; At least one of the fresh-keeping compartments is connected to the gas processing module through one of the return gas channels for returning the gas inside to the gas processing module.

22. The refrigerator of claim 21, wherein, The gas processing module comprises: A gas processing unit comprising a frame body, an anode and a cathode, the anode, the cathode and the frame body enclosing an inner cavity containing electrolyte, the cathode being used to consume oxygen outside the gas processing unit through an electrochemical reaction to form a fresh-keeping gas in a state of oxygen deficiency outside the gas processing unit, and the anode being used to generate oxygen inside the gas processing unit through an electrochemical reaction to form a fresh-keeping gas in a state of oxygen enrichment in the inner cavity; A processing box surrounding the outside of the gas processing unit, the processing box being provided with the gas outlet for the fresh-keeping gas in the state of oxygen deficiency or the fresh-keeping gas in the state of oxygen enrichment to flow out.

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