Refrigerator

Abstract

The refrigerator comprises a refrigerator body, a door body, a refrigerating chamber, a fresh-keeping drawer arranged in the refrigerating chamber, a vacuum pump assembly and a first humidity detection device, the vacuum pump assembly extracts air from the fresh-keeping drawer and exhausts the extracted air to other chambers or the exterior of the refrigerator body, so that pressure difference exists between the interior of the fresh-keeping drawer and the refrigerating chamber; and air in the refrigerating chamber enters the refrigerating chamber through the second circulation gap, so that a first airflow circulation path outside the refrigerating chamber, the fresh-keeping drawer, the vacuum pump assembly and the box body is formed.

Description

Technical Field

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

[0002] As an indispensable appliance in home life, refrigerators prevent food from spoiling by lowering the temperature of the storage space. At present, in order to improve the preservation quality of food, refrigerators with vacuum space are proposed, that is, refrigerators have a vacuum device and a vacuum space for preserving food. Summary of the Invention

[0003] On the one hand, a refrigerator is provided, comprising a housing, an installation space, an insulation layer, a compressor compartment, a cold storage chamber, a door body, a first circulation gap, a vacuum pump assembly, a piping assembly, a first odor detection device, and a controller. The housing comprises a top and a bottom arranged along its length, and the housing comprises an outer shell and an inner liner, wherein the inner liner is arranged inside the outer shell. The installation space is arranged between the inner liner and the outer shell. The insulation layer is arranged in the installation space and is configured to reduce heat exchange between the inside and outside of the housing. The compressor compartment is arranged at the bottom position of the housing. The cold storage chamber is configured to be formed by the inner liner and is configured to refrigerate and store food. The door body is configured to open or close the cold storage chamber. The first circulation gap is configured to be the gap at the connection between the door body and the housing when the door body closes the cold storage chamber. The vacuum pump assembly is arranged in the compressor compartment and is configured to evacuate the cold storage chamber. One end of the pipe assembly is connected to the vacuum pump assembly, and the other end of the pipe assembly passes through the insulation layer and extends to the cold storage chamber exhaust port. The pipe assembly is configured to provide a flow pipeline for the gas extracted by the vacuum pump assembly. The first odor detection device is arranged in the cold storage chamber and is configured to detect the odor concentration in the cold storage chamber. The controller is configured to turn on the vacuum pump assembly when the odor concentration detected by the first odor detection device reaches a first preset odor concentration threshold. The vacuum pump assembly evacuates the cold storage chamber and discharges the extracted gas to other compartments or the outside of the box to reduce the pressure in the cold storage chamber. The air outside the box enters the cold storage chamber through the first circulation gap to form at least an airflow circulation path between the cold storage chamber, the vacuum pump assembly, and the outside of the box to accelerate the airflow circulation inside and outside the cold storage chamber.

[0004] On the other hand, a refrigerator is provided, comprising a housing, an installation space, an insulation layer, a compressor compartment, a cold storage chamber, a door body, a first circulation gap, a vacuum pump assembly, a first pipeline assembly, a first humidity detection device, and a controller. The housing comprises a top and a bottom arranged along its length direction, and the housing comprises an outer shell and an inner liner, and the inner liner is arranged inside the outer shell. The installation space is arranged between the inner liner and the outer shell. The insulation layer is arranged in the installation space and is configured to insulate the storage space inside the housing from the outside. The compressor compartment is arranged at the bottom position of the housing. The cold storage chamber is configured to be formed by the inner liner and is configured to refrigerate and store food. The door body is configured to open or close the cold storage chamber. The first circulation gap is configured as a gap at the connection between the door body and the housing when the door body closes the cold storage chamber. The vacuum pump assembly is arranged in the compressor compartment and is configured to evacuate the cold storage chamber. One end of the first pipe assembly is connected to the vacuum pump assembly, and the other end of the first pipe assembly extends through the insulation layer to the refrigerator compartment's air extraction port. The first pipe assembly is configured to provide a flow path for gas extracted by the vacuum pump assembly. When the vacuum pump assembly is in operation, air within the refrigerator compartment is extracted through the refrigerator compartment's air extraction port. A first humidity detection device is disposed within the refrigerator compartment and configured to detect humidity within the refrigerator compartment. The controller is configured to activate the vacuum pump assembly when the humidity detected by the first humidity detection device reaches a first preset humidity value. The vacuum pump assembly then extracts air from the refrigerator compartment and discharges the extracted air to another compartment or to the exterior of the refrigerator compartment, thereby creating a pressure differential between the refrigerator compartment and the exterior of the refrigerator compartment. Air outside the refrigerator compartment enters the refrigerator compartment through the first flow gap, thereby forming at least a first airflow circulation path between the refrigerator compartment, the vacuum pump assembly, and the exterior of the refrigerator compartment, thereby discharging moisture within the refrigerator compartment through the aforementioned airflow circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 A schematic structural diagram of a refrigerator according to some embodiments of the present disclosure;

[0006] Figure 2 A schematic diagram of a partial structure of an implementation of oxygen reduction in a refrigerator according to some embodiments of the present disclosure;

[0007] Figure 3 This is a partial structural diagram of another embodiment of the refrigerator oxygen reduction system according to some embodiments of the present disclosure;

[0008] Figure 4 This is another partial structural diagram of another embodiment of the refrigerator oxygen reduction system provided according to some embodiments of the present disclosure;

[0009] Figure 5 This is a partial structural diagram of another embodiment of the refrigerator oxygen reduction system according to some embodiments of the present disclosure;

[0010] Figure 6 This is an exploded view of another embodiment of the refrigerator oxygen reduction system according to some embodiments of the present disclosure;

[0011] Figure 7 This is a partial structural diagram of another embodiment of the refrigerator oxygen reduction system according to some embodiments of the present disclosure;

[0012] Figure 8 This is a connection diagram of one of the vacuum pump assembly, the modified atmosphere membrane assembly, and the pipeline assembly provided according to some embodiments of the present disclosure;

[0013] Figure 9 A hardware configuration block diagram of a refrigerator according to some embodiments of the present disclosure;

[0014] Figure 10 A hardware configuration block diagram of a controller provided according to some embodiments of the present disclosure;

[0015] Figure 11 The control logic for reducing oxygen in a cold storage compartment according to some embodiments of the present disclosure is provided;

[0016] Figure 12 Control logic for switching to oxygen reduction in the refrigerator compartment and / or fresh-keeping drawer according to some embodiments of the present disclosure;

[0017] Figure 13 Another control logic for oxygen reduction in a refrigerated compartment according to some embodiments of the present disclosure;

[0018] Figure 14 Control logic for oxygenating the storage compartment according to some embodiments of the present disclosure;

[0019] Figure 15 The anti-condensation control logic of the refrigeration chamber provided according to some embodiments of the present disclosure;

[0020] Figure 16 Fresh air oxygen reduction control logic for a fresh-keeping drawer provided according to some embodiments of the present disclosure;

[0021] Figure 17 The anti-condensation control logic of the fresh-keeping drawer provided according to some embodiments of the present disclosure;

[0022] Figure 18 The control logic for the sterilization action of the refrigeration chamber after fresh air oxygen reduction is provided according to some embodiments of the present disclosure;

[0023] Figure 19The control logic for the sterilization action of the fresh-keeping drawer after fresh air oxygen reduction according to some embodiments of the present disclosure is provided;

[0024] Figure 20 Control logic for the first sterilization module provided in some embodiments of the present disclosure when executing the fresh air oxygen reduction mode in the refrigeration compartment;

[0025] Figure 21 To illustrate the control logic of sterilization work of a refrigerator before fresh air oxygen reduction, taking a refrigerator compartment as an example according to some embodiments of the present disclosure;

[0026] Figure 22 To illustrate the control logic of the sterilization work of the refrigerator before fresh air oxygen reduction, taking the fresh-keeping drawer as an example according to some embodiments of the present disclosure;

[0027] Figure 23 The following describes the control logic of odor removal in a refrigerator using a refrigerator compartment as an example according to some embodiments of the present disclosure.

[0028] Figure 24 A schematic structural diagram of a sterilization module and an odor removal module of a refrigerator according to some embodiments of the present disclosure;

[0029] Figure 25 Explosion of the sterilization module and the deodorization module of the refrigerator provided according to some embodiments of the present disclosure Figure 1 ;

[0030] Figure 26 Explosion of the sterilization module and the deodorization module of the refrigerator provided according to some embodiments of the present disclosure Figure 2 ;

[0031] Figure 27 for Figure 32 Enlarged view of point A in the middle;

[0032] Figure 28 for Figure 26 Enlarged view of point B in the middle;

[0033] Figure 29 A schematic structural diagram of a photocatalytic device provided according to some embodiments of the present disclosure;

[0034] Figure 30 An exploded view of a photocatalytic device provided according to some embodiments of the present disclosure;

[0035] Figure 31 An exploded view of another photocatalytic device provided according to some embodiments of the present disclosure;

[0036] Figure 32 This is a partial schematic diagram of a sterilization module provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings to clearly and completely describe some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0038] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0039] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0040] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0041] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0042] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0043] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0044] The present disclosure provides a refrigerator, Figure 1 The refrigerator includes a box body 100, which includes a top and a bottom arranged along the length direction. A storage compartment is formed inside the box body 100, and the storage compartment includes at least a refrigerator compartment 1 and a freezer compartment 12, so as to facilitate refrigerated or frozen storage of food.

[0045] In some embodiments, the storage compartment may further include a fresh-keeping drawer 11 and a variable temperature chamber to meet different storage needs of users.

[0046] Reference Figure 1 In the embodiment, the fresh-keeping drawer 11 is arranged in the refrigerating chamber 1. The fresh-keeping drawer 11 can also be arranged between the refrigerating chamber 1 and the freezing chamber 12 to adapt to the layout requirements of different models.

[0047] In some embodiments, the fresh-keeping drawer can be configured as an independent storage space to store food in a fresh-keeping manner.

[0048] The refrigerator of the present disclosure further comprises a door body 2, which comprises a door inner shell and a door outer shell. The door body 2 is used to open and close the storage space.

[0049] The door body 2 can be used to form a relatively closed space in the box body 100 to facilitate the air extraction or oxygen reduction work inside the box body 100, and prevent excessive air from flowing in from the outside, resulting in poor pressure reduction or oxygen reduction effects.

[0050] The gap at the connection between the door body 2 and the box body 100 when the door body 2 closes the refrigerating chamber 1 is defined as a first flow gap.

[0051] In some embodiments, a first through hole can be opened on the box body 100 to connect the outside of the box body 100 and the refrigerating chamber 1. The first through hole can be opened or closed according to the working status to promote the gas outside the refrigerating chamber 1 to enter the refrigerating chamber 1 during the pressure reduction / oxygen reduction process or the operation of the vacuum pump assembly 8, and to form a relatively closed space in the box body 100 during normal storage of the refrigerator.

[0052] The first through hole can be set as a circular hole or a narrow and long first through hole, but the ventilated area of ​​the first through hole should not be too large, otherwise it will not be easy to preserve the food in the refrigerator.

[0053] In some embodiments, the first flow gap and the first through hole may work in conjunction with each other.

[0054] Reference Figure 2 The box body 100 includes an inner liner 120 that defines a storage space, and an outer shell 110 connected to the outside of the inner liner 120 to form the appearance of the refrigerator. An installation space is formed between the inner liner 120 and the outer shell 110. The installation space is configured to form an insulation layer, and the insulation layer is configured to insulate the storage space inside the box body 100 from the outside.

[0055] A back duct is formed between the inner liner 120 and the outer shell 110, and the back duct is connected to the storage compartment inside the box 100. A refrigeration system is installed in the back duct. The cold air generated by the refrigeration system enters the box 100 through the back duct to cool the food in the box 100.

[0056] A refrigeration fan 15 is provided in the back duct, and is configured to accelerate the airflow velocity of the entire back duct and the box body 100, thereby accelerating heat exchange.

[0057] In the present disclosure, a refrigeration system for supplying cold air to a storage room includes a compressor, a condenser, an expansion valve, and an evaporator. Refrigerant circulates through the various components of the refrigeration system, achieving a cooling effect. The refrigerant's primary flow through the various components is as follows: the refrigerant passes through the compressor, enters the condenser, passes through the condenser, enters the expansion valve, passes through the expansion valve, enters the evaporator, and then flows back to the compressor.

[0058] Specifically, the compressor compresses high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat to the surrounding environment through the condensation process. The expansion valve expands the high-temperature, high-pressure liquid refrigerant in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of evaporation of the refrigerant or heat exchange with the material to be cooled.

[0059] Reference Figure 2 The box body 100 includes a top and a bottom that are relatively arranged. A compressor compartment 13 is provided at the bottom position of the refrigerator in the present disclosure. In the present disclosure, in addition to the compressor, a vacuum pump assembly 8 is also installed in the compressor compartment 13. The vacuum pump assembly 8 can be configured to extract air from the refrigeration chamber 1 and / or the fresh-keeping drawer 11 to reduce the pressure in the refrigeration chamber 1 and / or the fresh-keeping drawer 11.

[0060] The vacuum pump assembly of the present disclosure can also be used to evacuate other storage compartments of the refrigerator to reduce the pressure in the corresponding compartments, and only reasonable piping settings are required.

[0061] In order to cooperate with the operation of the vacuum pump assembly 8, the refrigerator further includes a pipeline assembly 7, the pipeline assembly 7 includes a first pipeline assembly, and the first pipeline assembly is configured to connect the vacuum pump assembly 8 with the refrigeration chamber 1.

[0062] Specifically, one end of the first pipeline assembly is connected to the vacuum pump assembly 8, and the other end of the first pipeline assembly passes through the insulation layer and extends to the refrigeration chamber exhaust port of the refrigeration chamber 1. The first pipeline assembly is configured to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0063] When the vacuum pump assembly 8 is working, the air in the refrigerating chamber 1 will pass through the refrigerating chamber exhaust port and then be extracted to perform a better pressure reduction action.

[0064] Reference Figure 7 In the embodiment, the first pipeline assembly is installed in the insulation layer through the first mounting member 71, so as to fix the position of the first pipeline assembly in the insulation layer and avoid the situation that the setting of the first pipeline assembly affects the foaming process of the insulation layer, causing bulging or depression of the insulation layer.

[0065] Through the above-mentioned arrangement, the vacuum pump assembly 8 is installed in the compressor compartment 13, which does not affect the storage space of the refrigerator without increasing the overall volume of the refrigerator. At the same time, the pipeline assembly 7 is arranged in the insulation layer, and no additional space layout is required. The overall planning of the refrigerator is simple and does not affect the existing functions of the refrigerator.

[0066] A first modified atmosphere membrane assembly 101 is installed on the top of the cold storage room 1. Since different polymer membranes have different permeabilities and selectivities for different types of gas molecules, the first modified atmosphere membrane assembly 101 can be configured to separate a certain type of air from a gas mixture. In the present disclosure, oxygen is separated from the air.

[0067] By arranging the first modified atmosphere membrane assembly 101 on the top of the refrigerating chamber 1, it is effectively prevented that the first modified atmosphere membrane assembly 101 is blocked by food, thereby preventing the air circulation from being affected.

[0068] Among them, the vacuum pump assembly in the present disclosure can perform vacuum and oxygen reduction operations on any storage compartment of the refrigerator. It only requires reasonable pipeline settings, and ordinary technicians in this field can flexibly choose according to needs.

[0069] From reducing power, reducing noise, and preventing continuous working heat,

[0070] In some embodiments, modified atmosphere membranes with different permeation rates can be matched with vacuum pumps with different maximum vacuum pressure values ​​and flow rates.

[0071] When the oxygen concentration in the space to be deoxygenated is between 20.3% and 21.5%, the oxygen transmission rate of the modified atmosphere membrane is adjusted according to the maximum vacuum pressure and flow rate of the vacuum pump. This allows the appropriate power to be selected to avoid high power operation and effectively reduce noise.

[0072] In some embodiments, when the oxygen permeability of the modified atmosphere membrane is 22% to 26%, the rated maximum vacuum pressure of the vacuum pump is selected to be 60 to 65 kPa, and the rated flow rate of the vacuum pump is selected to be 3 to 3.5 L.

[0073] In some embodiments, when the oxygen permeability of the modified atmosphere membrane is 27% to 30%, the rated maximum vacuum pressure of the selected vacuum pump is 65 kPa to 70 kPa, and the rated flow rate of the vacuum pump is 3.5 to 4 L.

[0074] In some embodiments, when the oxygen permeability of the modified atmosphere membrane is 31% to 35%, the rated maximum vacuum pressure of the selected vacuum pump is 71 kPa to 77 kPa, and the rated flow rate of the vacuum pump is 4 L to 4.5 L.

[0075] In some embodiments, when the oxygen permeability of the modified atmosphere membrane is 36% to 40%, the rated maximum vacuum pressure of the selected vacuum pump is 78 kPa to 84 kPa, and the rated flow rate of the vacuum pump is 4.5 L to 5 L.

[0076] In some embodiments, when the oxygen permeability of the modified atmosphere membrane is 41% to 45%, the rated maximum vacuum pressure of the selected vacuum pump is 85 kPa to 90 kPa, and the rated flow rate of the vacuum pump is 4.5 L to 5 L.

[0077] In some embodiments, the first modified atmosphere membrane assembly 101 may also be disposed on the rear wall or side wall of the refrigerating chamber 1 to facilitate the overall layout of the refrigerator.

[0078] In some embodiments, multiple first modified atmosphere membrane assemblies 101 can be provided, and the first modified atmosphere membrane assemblies 101 can be placed on one or a combination of the top, rear wall, and side wall of the refrigerating chamber 1 to accelerate the circulation rate of air in the refrigerating chamber 1 and improve the oxygen reduction efficiency and ventilation efficiency of the refrigerating chamber 1.

[0079] In some embodiments, the modified atmosphere membrane assembly is configured as a thin film made from a conductive organic material, such as polyaniline. This polymer can be doped with charged atoms, and the permeability of the film can be modified by the dopant content. Oxygen passes through this film faster than nitrogen, so oxygen can be produced from this film.

[0080] In order to cooperate with the operation of the vacuum pump assembly 8, the first pipeline assembly can be configured to connect the vacuum pump assembly 8 and the first modified atmosphere membrane assembly 101. Specifically, one end of the first pipeline assembly is connected to the vacuum pump assembly 8, and the other end of the first pipeline assembly passes through the insulation layer and extends to the side of the first modified atmosphere membrane assembly 101 away from the cold storage chamber 1. The first pipeline assembly is configured to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0081] When the vacuum pump assembly 8 is working, the air in the refrigerating chamber 1 will pass through the first modified atmosphere membrane assembly 101 and then be drawn out to perform a better oxygen reduction action.

[0082] In some embodiments, the vacuum pump is matched to a maximum vacuum pressure value of the refrigerating chamber 1 , and the working time of the vacuum pump is related to the oxygen concentration in the refrigerating chamber 1 .

[0083] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 20.5 to 21%, the single continuous working time of the vacuum pump is 10 to 15 minutes.

[0084] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 20 to 20.5%, the single continuous working time of the vacuum pump is 15 to 20 minutes.

[0085] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 19.5 to 20%, the single continuous working time of the vacuum pump is 20 to 25 minutes.

[0086] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 19 to 19.5%, the single continuous working time of the vacuum pump is 20 to 25 minutes.

[0087] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 18.5 to 19%, the single continuous working time of the vacuum pump is 25 to 30 minutes.

[0088] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 18 to 18.5%, the single continuous working time of the vacuum pump is 30 to 35 minutes.

[0089] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 17.5 to 18%, the single continuous working time of the vacuum pump is 35 to 40 minutes.

[0090] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 17 to 17.5%, the single continuous working time of the vacuum pump is 40 to 45 minutes.

[0091] In some embodiments, when the required oxygen concentration in the refrigerating chamber 1 is 16.5 to 17%, the single continuous working time of the vacuum pump is 45 to 50 minutes.

[0092] In the technical solution disclosed herein, the working time of the vacuum pump can be reasonably arranged according to the required oxygen concentration in the refrigerating chamber 1 to prevent the vacuum pump from working for a long time and generating long-term noise.

[0093] In some embodiments, when the vacuum pump needs to work for more than a certain time limit, the vacuum pump can be interrupted to allow the vacuum pump to take a short break, thereby preventing the vacuum pump from overheating due to long-term operation.

[0094] Reference Figure 2 In the embodiment, the first pipeline assembly is installed in the insulation layer through the first mounting member 71, so as to fix the position of the first pipeline assembly in the insulation layer and avoid the situation that the setting of the first pipeline assembly affects the foaming process of the insulation layer, causing bulging or depression of the insulation layer.

[0095] Through the above-mentioned arrangement, the vacuum pump assembly 8 is installed in the compressor compartment 13, which does not affect the storage space of the refrigerator without increasing the overall volume of the refrigerator. At the same time, the pipeline assembly 7 is arranged in the insulation layer, and no additional space layout is required. The overall planning of the refrigerator is simple and does not affect the existing functions of the refrigerator.

[0096] In some embodiments, the fresh-keeping drawer 11 is disposed in the refrigerator compartment 1, and includes a drawer shell 112 disposed in the refrigerator compartment 1, and a drawer body 111 that can slide relative to an opening of the drawer shell 112. For example, a slide rail can be disposed on the inner wall of the drawer shell 112, and a sliding block that moves along the slide rail is disposed at an opposite position of the drawer body 111.

[0097] In some embodiments, a sealing strip is provided on the side where the drawer body 111 contacts the opening of the drawer shell 112. When the drawer body 111 and the drawer shell 112 are installed, the drawer body 111 and the drawer shell 112 form a relatively closed storage space. There is a second circulation gap at the contact position of the drawer body 111 and the drawer shell 112. When there is a pressure difference between the inside and outside of the storage space formed by the fresh-keeping drawer 11, external air will enter the fresh-keeping drawer 11.

[0098] In some embodiments, a sealing strip is provided at the opening position of the drawer shell 112. When the drawer body 111 is pushed into the inside of the drawer shell 112, the drawer body 111 and the drawer shell 112 form a relatively closed storage space. There is a gap at the contact position between the drawer body 111 and the drawer shell 112. When there is a pressure difference between the inside and outside of the storage space formed by the fresh-keeping drawer 11, external air will enter the fresh-keeping drawer 11.

[0099] In some embodiments, a second through hole for connecting the fresh-keeping drawer 11 with the refrigerator compartment 1 may also be opened on the drawer shell 112. The second through hole can be opened or closed according to the working state of the fresh-keeping drawer 11, so as to promote the gas outside the fresh-keeping drawer 11 (the gas in the refrigerator compartment 1) to enter the fresh-keeping drawer 11 during the deoxygenation process or the operation of the vacuum pump assembly 8, and to form a relatively closed space for the fresh-keeping drawer 11 during the normal storage process of the fresh-keeping drawer 11.

[0100] In some embodiments, the second flow gap and the second through hole may work in conjunction with each other.

[0101] In some embodiments, a third through hole for connecting the outside of the box body 100 and the fresh-keeping drawer 11 can also be opened on the drawer body 111. The third through hole can be opened or closed according to the working state of the fresh-keeping drawer 11, so as to promote the gas outside the box body 100 to enter the fresh-keeping drawer 11 during the deoxygenation process or the operation of the vacuum pump assembly 8, and to form a relatively closed space in the fresh-keeping drawer 11 during the normal storage process of the fresh-keeping drawer 11.

[0102] In some embodiments, the second flow gap and the third through hole can work in coordination with each other.

[0103] In order to cooperate with the work of the vacuum pump assembly 8 , the pipeline assembly 7 further includes a second pipeline assembly, which is configured to connect the vacuum pump assembly 8 and the fresh-keeping drawer 11 .

[0104] One end of the second pipeline assembly is connected to the vacuum pump assembly 8, and the other end of the second pipeline assembly passes through the insulation layer and extends to the fresh-keeping drawer exhaust port of the fresh-keeping drawer 11. The second pipeline assembly is configured to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0105] When the vacuum pump assembly 8 is working, the air in the fresh-keeping drawer 11 will pass through the fresh-keeping drawer exhaust port and then be extracted to perform a better pressure reduction action.

[0106] Reference Figure 7 In the embodiment, the second pipeline assembly is installed in the insulation layer through the second mounting part, so as to fix the position of the second pipeline assembly in the insulation layer and avoid the situation that the foaming process of the insulation layer is affected by the setting of the second pipeline assembly, resulting in bulging or depression of the insulation layer.

[0107] The second mounting member may be configured to have the same structure as the first mounting member 71 , or may be configured to be another member having a mounting and fixing function.

[0108] Through the above-mentioned setting, the vacuum pump assembly 8 is installed in the compressor compartment 13, which does not affect the storage space of the refrigerator without increasing the overall volume of the refrigerator. At the same time, the second pipeline assembly is set in the insulation layer, and no additional space layout is required. The overall planning of the refrigerator is simple and does not affect the existing functions of the refrigerator.

[0109] Based on the above, when the fresh-keeping drawer can be set between the refrigerator and the freezer, at this time, the pressure reduction action for the fresh-keeping drawer is the same as that of the refrigerator. When the fresh-keeping drawer is set in the refrigerator, the air in the refrigerator can be used to participate in the air circulation to form air circulation inside and outside the fresh-keeping drawer, thereby improving the pressure reduction efficiency of the fresh-keeping drawer.

[0110] It should be noted that since the fresh-keeping drawer 11 is located between the refrigerator compartment 1 and the freezer compartment 12, that is, when the fresh-keeping drawer 11 is independently installed, the control logic for the pressure reduction mode and anti-condensation function of the fresh-keeping drawer 11 is substantially the same as that of the refrigerator compartment 1. This disclosure primarily describes the technical solution based on the fresh-keeping drawer 11 being located within the refrigerator compartment 1. The pressure reduction mode utilizes the vacuum pump assembly 8 to evacuate the internal space, creating a pressure differential between the inside and outside of the space, allowing external air to enter the space and create an airflow circulation between the internal and external spaces.

[0111] Among them, the pressure reduction mode is a mode in which air is evacuated from the fresh-keeping drawer through a vacuum pump assembly so that the pressure inside the fresh-keeping drawer is lower than the external atmospheric pressure.

[0112] In some embodiments, when the refrigerator executes the pressure reduction mode, the refrigeration fan of the back duct is started to accelerate the air circulation and increase the pressure reduction rate.

[0113] Similarly, in order to reduce the oxygen content in the fresh-keeping drawer 11 , the refrigerator further includes a second modified atmosphere membrane assembly 102 .

[0114] Among them, reference Figure 6 The second modified atmosphere membrane assembly 102 is arranged on the top of the fresh-keeping drawer 11. The structural composition of the second modified atmosphere membrane is consistent with that of the first modified atmosphere membrane assembly 101, and is not described in detail here.

[0115] By arranging the second modified atmosphere membrane assembly 102 on the top of the fresh-keeping drawer 11, it is effectively prevented that the second modified atmosphere membrane assembly 102 is blocked by food, thereby preventing the air circulation from being affected.

[0116] In some embodiments, the second modified atmosphere membrane assembly 102 may also be disposed on the rear wall or side wall of the fresh-keeping drawer 11 to facilitate the overall layout of the refrigerator.

[0117] In some embodiments, multiple second modified atmosphere membrane assemblies 102 may be provided, and the second modified atmosphere membrane assemblies 102 may be disposed at one or a combination of the top, rear wall, and side wall of the fresh-keeping drawer 11 to accelerate the circulation rate of air in the fresh-keeping drawer 11 and improve the oxygen reduction efficiency and ventilation efficiency of the fresh-keeping drawer 11.

[0118] One end of the second pipeline assembly is connected to the vacuum pump assembly 8, and the other end of the second pipeline assembly passes through the insulation layer and extends to the side of the second modified atmosphere membrane assembly 102 away from the fresh-keeping drawer 11. The second pipeline assembly is configured to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0119] When the vacuum pump assembly 8 is working, the air in the fresh-keeping drawer 11 will pass through the second modified atmosphere membrane assembly 102 and then be drawn out to perform a better oxygen reduction action.

[0120] Based on the above, when the fresh-keeping drawer can be set between the refrigerator and the freezer, the oxygen reduction action for the fresh-keeping drawer is the same as that of the refrigerator; when the fresh-keeping drawer is set in the refrigerator, the air in the refrigerator can be used to participate in the air circulation to form air circulation inside and outside the fresh-keeping drawer, thereby improving the oxygen reduction efficiency of the fresh-keeping drawer.

[0121] It should be noted that since the fresh-keeping drawer 11 is disposed between the refrigerator compartment 1 and the freezer compartment 12, that is, when the fresh-keeping drawer 11 is independently disposed, the control logic of the fresh air and oxygen reduction mode, anti-condensation, etc. of the fresh-keeping drawer 11 is substantially the same as that of the refrigerator compartment 1. This disclosure mainly describes the technical solution based on the case where the fresh-keeping drawer 11 is located within the refrigerator compartment 1. The fresh air and oxygen reduction mode utilizes the vacuum pump assembly 8 to evacuate the internal space. The internal air is extracted through the gas-conditioning membrane assembly to reduce the oxygen content in the internal space. A pressure difference is formed between the inside and outside of the internal space, allowing external air to enter the internal space to form an airflow circulation between the internal and external spaces.

[0122] The above-mentioned fresh air oxygen reduction mode utilizes the vacuum pump assembly 8 to evacuate the internal space, and the internal air is extracted through the gas-controlled membrane assembly to reduce the oxygen in the internal space; a pressure difference is formed between the inside and outside of the internal space, allowing the external air to enter the internal space to form an airflow circulation between the internal space and the external space.

[0123] In some embodiments, when the refrigerator executes the fresh air oxygen reduction mode, the refrigeration fan in the back duct is started to accelerate the air circulation and increase the oxygen reduction rate.

[0124] In some embodiments, the first pipeline assembly and the second pipeline assembly are intersected and connected, and a regulating valve 5 is provided at the connection between the first pipeline assembly and the second pipeline assembly. The regulating valve 5 is configured to control the connectivity between the refrigeration chamber 1 and the vacuum pump assembly 8 and / or the fresh-keeping drawer 11 and the vacuum pump assembly 8.

[0125] In some embodiments, the first pipeline assembly and the second pipeline assembly can be set separately, and regulating valves are respectively set on the first pipeline assembly and the second pipeline assembly, which are configured to respectively control the connectivity between the refrigeration chamber 1 and the vacuum pump assembly 8, and the fresh-keeping drawer 11 and the vacuum pump assembly 8.

[0126] In some embodiments, the refrigerator further includes a gas collection chamber, which is connected to the air inlet end of the vacuum pump assembly 8, and the gas collection chamber is configured to collect the oxygen-rich gas extracted by the vacuum pump assembly 8 from the refrigeration chamber 1 and / or the fresh-keeping drawer 11.

[0127] In some embodiments, the gas collection chambers can be provided separately or together to collect the air from the refrigeration chamber 1 or the fresh-keeping drawer 11 .

[0128] Exemplarily, the gas collection chamber is arranged at the top of the cold storage chamber 1, and can be arranged at the air suction port of the cold storage chamber. A first gas-conditioning membrane assembly 101 is arranged on one side of the gas collection chamber close to the cold storage chamber 1, and is configured to perform air filtration.

[0129] In some embodiments, the first modified atmosphere membrane assembly 101 includes a gas collection chamber disposed on the top of the refrigeration chamber 1 and an oxygen-enriched membrane disposed on a side of the gas collection chamber close to the interior of the box 100 .

[0130] The gas collection chamber is provided with an air outlet, which is the air outlet of the entire atmosphere-controlled membrane assembly. The air outlet is connected to the first pipeline assembly. Under the action of the vacuum pump assembly 8, the refrigerating chamber 1 is evacuated, and the oxygen in the air in the refrigerating chamber 1 will adhere to the oxygen-enriched membrane, so that the oxygen content in the gas collection chamber is finally higher than the oxygen content of the air in the refrigerating chamber 1, so as to reduce the oxygen content in the refrigerating chamber 1, and at the same time promote the airflow circulation in the refrigerating chamber 1, thereby improving the food preservation quality of the refrigerating chamber 1.

[0131] In some embodiments, the second modified atmosphere membrane assembly 102 includes a gas collection chamber disposed on the top of the fresh-keeping drawer 11 and an oxygen-enriched membrane disposed on a side of the gas collection chamber close to the interior of the box 100 .

[0132] The gas collection chamber is provided with an air outlet, which is connected to the second pipeline assembly. Under the action of the vacuum pump assembly 8, the fresh-keeping drawer 11 is evacuated, and the oxygen in the air in the fresh-keeping drawer 11 will adhere to the oxygen-enriched membrane, so that the oxygen content in the gas collection chamber is finally higher than the oxygen content of the air in the fresh-keeping drawer 11, thereby reducing the oxygen content in the fresh-keeping drawer 11 and improving the food preservation quality of the fresh-keeping drawer 11.

[0133] Reference Figure 10The refrigerator in the disclosed embodiment also includes a controller 6. This controller, through various control programs stored in memory, obtains various operating parameters of the refrigerator and uses these parameters to control the operation of various components of the refrigerator and respond to user operations. By controlling the states of the regulating valve 5 and the vacuum pump assembly 8, the controller 6 can achieve low oxygen requirements in the refrigerator compartment 1 and the fresh food drawer 11, as well as high oxygen requirements in some storage compartments, thereby meeting the user's diverse storage needs.

[0134] The controller 6 controls the overall operation of the refrigerator. For example, in response to receiving an oxygen reduction instruction for a corresponding compartment issued by a user, the controller 6 may execute an operation related to the object selected by the oxygen reduction instruction.

[0135] In some embodiments, the controller 6 includes a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), a random access memory (RAM), a read-only memory (ROM), a first interface to an nth interface configured as input / output, a communication bus (Bus), etc.

[0136] In some embodiments, the controller 6 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal to instruct the refrigerator to execute the control instruction.

[0137] Some embodiments of the present disclosure also provide a hardware structure diagram of a controller 6, such as Figure 8 As shown, the controller 6 includes a processor 83, a memory 82 connected to the processor 83, and a communication interface 84. The processor 83, the memory 82, and the communication interface 84 are connected via a bus 81. For ease of representation, Figure 11 Only one thick line is used in the figure, but it does not mean that there is only one bus 81 or one type of bus 81.

[0138] In some embodiments, the controller 6 is installed on the door body 2. Of course, the controller 6 can also be installed on the box body 100 for layout purposes.

[0139] In some embodiments, reference Figure 9 The refrigerator further includes a door closing detection component mounted on the door 2 or the cabinet 100. The door closing detection component is configured to detect the state of the door 2 and transmit a door opening or closing signal to the controller 6. Exemplarily, the door closing detection component is configured as a door closing detection sensor configured to detect whether the cabinet 100 is closed to facilitate oxygen reduction. The door closing detection component for detecting the state of the door is defined as a first door closing detection component 91.

[0140] In some embodiments, reference Figure 9 The refrigerator also includes an image acquisition device 3, which is arranged in the refrigerating chamber 1 and / or the fresh-keeping drawer 11. The image acquisition device 3 is configured to capture images in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 and send them to the controller 6.

[0141] The controller 6 stores the types of food and the oxygen content range required for storage. After receiving the image captured by the image acquisition device 3, the controller 6 can perform image recognition to obtain the type of food in the current space and obtain the corresponding required oxygen content range to control the operation of the vacuum pump component 8.

[0142] Exemplarily, the image acquisition device 3 may be configured as a camera, which is configured to acquire images and send the images to the controller 6 .

[0143] In some embodiments, reference Figure 1 The refrigerator also includes an odor detection device 4, which is installed in the refrigerator compartment and / or the fresh-keeping drawer. The odor detection device 4 is configured to detect the odor concentration in the space as a basis for turning on the fresh air and oxygen reduction mode.

[0144] In some embodiments, when the odor concentration level identified in the refrigerator compartment 1 or the fresh-keeping drawer 11 reaches a preset critical value, the fresh air oxygen reduction mode is turned on to remove odor molecules through gas replacement.

[0145] Reference Figure 9 The refrigerator also includes an oxygen concentration detection device 4, which is arranged in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 and is configured to detect the oxygen concentration in the refrigerating chamber 1 and / or the fresh-keeping drawer 11, so as to assist the controller 6 in controlling the working state of the vacuum pump assembly 8.

[0146] The oxygen concentration detection device can be configured as an oxygen detector or an oxygen concentration detection sensor. A person skilled in the art can select a suitable oxygen concentration detection device according to requirements (including cost requirements, size requirements, etc.).

[0147] In some embodiments, the oxygen concentration detection device 4 may also be disposed in the storage compartment to detect the internal oxygen concentration and prevent the internal oxygen concentration from being too high.

[0148] In some embodiments, the compartments requiring oxygen reduction, the number of vacuum pump assemblies 8 , and the structure of the vacuum pump assemblies 8 are set to achieve oxygen reduction for a set number of compartments using a set number of vacuum pump assemblies 8 .

[0149] In some embodiments, the refrigerator further includes a pressure detection device installed in the refrigerator compartment and / or the fresh food drawer, and the pressure detection device is configured to detect the pressure within the space. In some embodiments, the pressure detected by the pressure detection device can be used as a basis for activating the pressure reduction mode.

[0150] Exemplarily, the pressure detection device is configured as a vacuum pressure gauge to detect the internal vacuum degree.

[0151] In some embodiments, the refrigerator also includes a bacteria detection device, which is located in the refrigeration chamber 1 or the fresh-keeping drawer 11 and is configured to detect the bacterial content in the chamber or on the side wall of the chamber and output it to the controller 6 so that the controller 6 can control the corresponding sterilization module to sterilize and extend the shelf life of the food.

[0152] The bacteria detection device provided in the refrigerating chamber 1 is defined as a first bacteria detection device, and the bacteria detection device provided in the fresh-keeping drawer 11 is defined as a second bacteria detection device.

[0153] Reference Figure 2 As shown, a vacuum pump assembly 8 is installed in the compressor compartment 13. A pipeline assembly 7 is led from the air intake of the vacuum pump assembly 8. This pipeline assembly 7 is installed in the insulation layer (not shown in the figure) and then connected to the air outlet of the first modified atmosphere membrane assembly 101 located at the top of the refrigeration chamber 1 to facilitate the extraction of gas from the refrigeration chamber 1. In the figure, one vacuum pump assembly 8 serves one compartment.

[0154] In order to improve the oxygen reduction efficiency in a single room and enhance the airflow circulation in the room, in some embodiments, the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102 can be provided in plurality, and each first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102 can be connected to the exhaust end of the vacuum pump assembly 8 through a corresponding pipeline assembly 7.

[0155] The multiple modified atmosphere membrane assemblies may be connected to the same vacuum pump assembly 8 or to different vacuum pump assemblies 8 .

[0156] By providing a plurality of modified atmosphere membrane assemblies for one compartment, that is, providing a plurality of air extraction ports, the oxygen reduction efficiency of the refrigerating compartment 1 and / or the fresh-keeping drawer 11 can be effectively improved.

[0157] In order to flexibly adjust the oxygen content of the compartment connected to the modified atmosphere membrane assembly, in some embodiments, the vacuum pump assembly 8 is provided in plurality, and a single vacuum pump assembly 8 can be connected to the first modified atmosphere membrane assembly 101 and / or the second modified atmosphere membrane assembly 102.

[0158] Refrigerators are generally installed indoors for use, and the noise generated by the vacuum pump assembly 8 when it is working needs to be considered. In order to reduce the noise during the deoxygenation process, in some embodiments, the controller 6 is configured to control multiple vacuum pump assemblies 8 to work alternately, with at most one vacuum pump assembly 8 working at the same time.

[0159] Reference Figures 7 to 8 The refrigerator shown in the figure includes two sets of vacuum pump assemblies 8, which are respectively installed on both sides of the compressor compartment 13 along the length direction. Figure 8 Taking the center position as an example, the vacuum pump assembly 8 on the left is defined as the first vacuum pump assembly, and the vacuum pump assembly 8 on the right is defined as the second vacuum pump assembly.

[0160] Among them, the second vacuum pump assembly is connected to the first modified atmosphere membrane assembly 101 and is configured to reduce the oxygen content in the refrigeration chamber 1; the first vacuum pump assembly is connected to the second modified atmosphere membrane assembly 102 and is configured to reduce the oxygen content in the fresh-keeping drawer 11.

[0161] Of course, a set of vacuum pump components 8 can also be used to simultaneously reduce the oxygen level in the refrigerator compartment 1 and the fresh-keeping drawer 11. Figure 5 The refrigerator shown in the figure includes a set of vacuum pump components 8, which are respectively connected to the first modified atmosphere membrane component 101 and the second modified atmosphere membrane component 102 to complete the oxygen reduction action of the refrigeration chamber 1 and the fresh-keeping drawer 11.

[0162] A valve is provided in the pipeline to adjust which compartment the vacuum pump assembly 8 is to reduce oxygen in, thereby achieving precise oxygen reduction.

[0163] In some embodiments, the vacuum pump assembly 8 includes multiple vacuum pumps, and the multiple vacuum pumps are simultaneously connected to the first pipeline assembly and / or the second pipeline assembly, and the air flow in the pipeline is controlled by setting multiple valves.

[0164] The controller is configured to simultaneously activate at least two vacuum pumps upon receiving a second signal regarding the refrigeration chamber 1 to accelerate the extraction of air from the refrigeration chamber 1 and improve oxygen reduction efficiency. It should be noted that upon receiving the second signal, the controller 6 controls the vacuum pump assembly 8 to operate at a faster extraction speed to achieve a stronger oxygen reduction.

[0165] In some embodiments, the first modified atmosphere membrane assembly 101 can be connected to multiple vacuum pump assemblies 8 so that two or more vacuum pump assemblies 8 can work to accelerate the rate of decrease of oxygen in the refrigeration chamber 1 .

[0166] In some embodiments, the controller 6 is configured to, upon receiving a strong oxygen reduction signal for the refrigerated compartment 1, simultaneously activate at least two vacuum pump assemblies 8 to rapidly extract oxygen from the refrigerated compartment 1. It should be noted that upon receiving an instruction executed in response to a strong oxygen reduction signal, the vacuum pump assemblies 8 are operated at a set rate.

[0167] In different implementations, the strong oxygen reduction signal can be divided into multiple signals, each corresponding to different levels of pumping rates to meet different oxygen reduction needs.

[0168] In some embodiments, the second modified atmosphere membrane assembly 102 can be connected to multiple vacuum pump assemblies 8 to facilitate the operation of two or more vacuum pump assemblies 8, thereby accelerating the oxygen reduction rate in the fresh-keeping drawer 11 and improving the oxygen reduction efficiency.

[0169] In some embodiments, the controller 6 is configured to, upon receiving a strong oxygen reduction signal regarding the fresh-keeping drawer 11 , simultaneously activate at least two vacuum pump assemblies 8 to extract the oxygen in the fresh-keeping drawer 11 as quickly as possible, thereby improving the oxygen reduction efficiency.

[0170] The controller's control logic for receiving a strong oxygen reduction signal for the fresh food drawer and a strong oxygen reduction signal for the refrigerator compartment is roughly the same. The air extraction rate can be set differently based on the internal space size of the fresh food drawer and the refrigerator compartment. Furthermore, different levels can be provided to meet the oxygen reduction needs of the fresh food drawer 11.

[0171] Reference Figures 7 to 8 The figure includes two sets of vacuum pump components 8, which are respectively installed on both sides of the compressor compartment 13 along the length direction. Figure 7 Taking the center position as an example, the vacuum pump assembly 8 on the left is defined as the first vacuum pump assembly, and the vacuum pump assembly 8 on the right is defined as the second vacuum pump assembly.

[0172] The first vacuum pump assembly is connected to the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102 , and the second vacuum pump assembly is connected to the first modified atmosphere membrane assembly 101 .

[0173] That is to say, for the cold storage chamber 1, oxygen reduction can be achieved through the operation of the first vacuum pump assembly and the second vacuum pump assembly. In some embodiments, the first vacuum pump assembly and the second vacuum pump assembly can be controlled to work independently or together according to the detected oxygen concentration in the cold storage chamber 1.

[0174] The first vacuum pump assembly and the second vacuum pump assembly can be set to have the same or different operating frequencies to achieve oxygen reduction at different rates and different energy consumption.

[0175] For the fresh-keeping drawer 11, oxygen reduction can be performed through the first vacuum pump assembly.

[0176] In some embodiments, when the fresh-keeping drawer 11 is subjected to oxygen reduction, the oxygen content in the refrigerator compartment 1 can be reduced first, so that the fresh-keeping drawer 11 is in a space with a relatively low oxygen content. After the vacuum pump assembly 8 is activated, the gas outside the refrigerator compartment 1 enters the refrigerator compartment 1, and the gas inside the refrigerator compartment 1 is drawn away by the vacuum pump assembly 8 through the first modified atmosphere membrane assembly 101, thereby reducing the oxygen content in the refrigerator compartment 1.

[0177] Then the fresh-keeping drawer 11 is oxygenated, and the air in the fresh-keeping drawer 11 is drawn away through the second atmosphere-controlled membrane assembly 102. A pressure difference is formed between the fresh-keeping drawer 11 and the refrigerator compartment 1. The gas in the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the gap between the drawer and the drawer shell 112, replacing the original air in the fresh-keeping drawer 11, so that the oxygen content in the fresh-keeping drawer 11 is lower.

[0178] Through the above-mentioned setting, the technical solution of setting the fresh-keeping drawer 11 in the refrigerator chamber 1 that can perform oxygen reduction action is compared with setting the fresh-keeping drawer 11 independently. The fresh-keeping drawer 11 set in the refrigerator chamber 1 can replace the gas with a lower oxygen content, and the fresh-keeping drawer 11 can reach the set oxygen content more quickly.

[0179] During the above process, when a pressure difference occurs inside and outside the refrigerating chamber 1, the air outside the refrigerating chamber 1 enters the refrigerating chamber 1 through the first circulation gap or first through-hole in the refrigerating chamber 1 due to the pressure difference, thereby replacing the air inside the refrigerating chamber 1. Within a certain pressure range, the greater the pressure difference between the inside and outside of the refrigerating chamber 1, the faster the gas exchange rate between the inside and outside of the refrigerating chamber 1.

[0180] When a pressure difference occurs between the inside and outside of the fresh-keeping drawer 11, the air outside the fresh-keeping drawer 11 or inside the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second circulation gap, the second through hole, or the third through hole in the fresh-keeping drawer 11 due to the pressure difference, thereby replacing the air inside the fresh-keeping drawer 11. Within a certain pressure range, the greater the pressure difference between the inside and outside of the fresh-keeping drawer 11, the faster the gas exchange rate between the inside and outside of the fresh-keeping drawer 11.

[0181] In some embodiments, when the fresh-keeping drawer 11 is subjected to the oxygen reduction operation, the fresh-keeping drawer can be directly vacuumed and oxygen reduced. The air in the fresh-keeping drawer 11 is extracted through the second atmosphere-controlled membrane assembly 102, and a pressure difference is formed between the fresh-keeping drawer 11 and the refrigerator compartment 1. The gas in the refrigerator compartment 1 will enter the fresh-keeping drawer 11 through the gap between the drawer and the drawer shell 112, replacing the original air in the fresh-keeping drawer 11, thereby reducing the oxygen content in the fresh-keeping drawer 11.

[0182] In some embodiments, the oxygen reduction operation of the fresh-keeping drawer 11 and the oxygen reduction operation of the refrigerator compartment 1 are not sequential, and can be performed simultaneously. During the oxygen reduction operation, air flows inside the fresh-keeping drawer 11 and the refrigerator compartment 1, and air flows inside and outside the refrigerator compartment 1, thereby accelerating the oxygen reduction efficiency of the fresh-keeping drawer 11 and the refrigerator compartment 1 and improving the gas replacement process between the fresh-keeping drawer 11 and the refrigerator compartment 1. This ensures that the oxygen content in the fresh-keeping drawer 11 is lower than the oxygen content in the refrigerator compartment 1 for at least a period of time.

[0183] In some embodiments, a vacuum pump is used that matches the corresponding maximum vacuum pressure value according to the oxygen permeability of the modified atmosphere film. The working time of the vacuum pump is related to the oxygen concentration in the refrigerator compartment 1 and the fresh-keeping drawer 11 .

[0184] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigerator compartment 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 45 to 50 minutes at a time, the oxygen concentration in the refrigerator compartment is 17 to 17.5%, and the oxygen concentration in the fresh-keeping drawer 11 is 16 to 16.5%.

[0185] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigerator compartment 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 40 to 45 minutes at a time, the oxygen concentration in the refrigerator compartment 1 is 17.5 to 18%, and the oxygen concentration in the fresh-keeping drawer 11 is 16.5 to 17%.

[0186] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigerator compartment 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 35 to 40 minutes at a time, the oxygen concentration in the refrigerator compartment is 18 to 18.5%, and the oxygen concentration in the fresh-keeping drawer 11 is 17 to 17.5%.

[0187] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigerator compartment 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 30 to 35 minutes at a time, the oxygen concentration in the refrigerator compartment 1 is 18.5 to 19%, and the oxygen concentration in the fresh-keeping drawer 11 is 17.5 to 18%.

[0188] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigerator compartment 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 25 to 30 minutes at a time, the oxygen concentration in the refrigerator compartment is 19 to 19.5%, and the oxygen concentration in the fresh-keeping drawer 11 is 18 to 18.5%.

[0189] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigeration chamber 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 20 to 25 minutes at a time, the oxygen concentration in the refrigeration chamber 1 is 19.5 to 20%, and the oxygen concentration in the fresh-keeping drawer 11 is 18.5 to 19%.

[0190] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigerator compartment 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 15 to 20 minutes at a time, the oxygen concentration in the refrigerator compartment is 20 to 20.5%, and the oxygen concentration in the fresh-keeping drawer 11 is 19 to 19.5%.

[0191] In some embodiments, when the vacuum pump performs oxygen reduction action on the refrigeration chamber 1 and the fresh-keeping drawer 11, when the vacuum pump works continuously for 10 to 15 minutes at a time, the oxygen concentration in the refrigeration chamber 1 is 20.5 to 21%, and the oxygen concentration in the fresh-keeping drawer 11 is 19.5 to 20%.

[0192] In the technical solution disclosed herein, the working time of the vacuum pump can be reasonably arranged according to the required oxygen concentration in the refrigeration chamber 1 or the fresh-keeping drawer 11 to avoid the vacuum pump working for a long time and generating long-term noise.

[0193] In some embodiments, when the vacuum pump needs to work for more than a certain time limit, the vacuum pump can be interrupted to allow the vacuum pump to take a short break, thereby preventing the vacuum pump from overheating due to long-term operation.

[0194] In some embodiments, the operation of the fresh air oxygen reduction mode can be manually turned on or off, or can be turned on according to a set program.

[0195] For example, the operation of the oxygen reduction fresh air mode can be controlled by setting a preset interval time, or by detecting parameters such as the oxygen content and the content of odor molecules in the space.

[0196] In some embodiments, the controller 6 is configured to operate the vacuum pump assembly 8 once at intervals. For example, the vacuum pump assembly 8 can be configured to operate once every 6 hours.

[0197] In some embodiments, when there are more fruits and vegetables stored in the refrigeration chamber 1 or the fresh-keeping drawer 11, the enhanced mode can be manually turned on, and the gas replacement operation time and interval time are increased compared to before.

[0198] In some embodiments, the working state of the first vacuum pump assembly can be controlled according to the detected oxygen concentration of the fresh-keeping drawer 11 .

[0199] A regulating valve 5 is provided on the pipeline connected to the first vacuum pump assembly, which can adjust the connectivity and opening of the first vacuum pump assembly with the first gas-controlled membrane assembly 101 and the second gas-controlled membrane assembly 102, so as to reach the corresponding oxygen reduction range more quickly within the working capacity of the vacuum pump assembly 8.

[0200] Among them, although the present disclosure does not give an example of the second atmosphere-controlled membrane assembly 102 being connected to two or more vacuum pump assemblies 8, this solution is valid, and the working status of the connected vacuum pump assembly 8 and the corresponding regulating valve 5 can be adjusted according to the oxygen content in the fresh-keeping drawer 11 to reach the required oxygen content faster.

[0201] It should be noted that the technical solution of the present disclosure can achieve oxygen reduction in the refrigerator compartment 1 or the fresh-keeping drawer 11 independently, or simultaneously in the refrigerator compartment 1 and the fresh-keeping drawer 11, by properly configuring the number and connection of the vacuum pump assembly 8 and the modified atmosphere membrane assembly. The order of oxygen reduction in the refrigerator compartment 1 and the fresh-keeping drawer 11 can be determined based on internal detection data of the two storage compartments or according to existing program design.

[0202] In some embodiments, the controller 6 is configured to, after the refrigerator is powered on, start the vacuum pump assembly 8 or directly start the vacuum pump assembly 8 after receiving a first signal. The vacuum pump assembly 8 evacuates the refrigerating chamber 1 and discharges the evacuated gas to other compartments or the outside of the cabinet 100 to reduce the pressure in the refrigerating chamber 1, so that there is a pressure difference between the refrigerating chamber 1 and the outside of the refrigerating chamber. The air outside the cabinet 100 enters the refrigerating chamber 1 through the circulation gap to form at least a first airflow circulation path between the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the cabinet 100, thereby replacing part of the gas generated by the food in the refrigerating chamber 1.

[0203] Among them, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the refrigerating chamber 1 for at least a period of time, so that the oxygen content in the refrigerating chamber 1 is reduced, and the oxygen content in the refrigerating chamber is lower than the relative oxygen content of the gas composition outside the refrigerating chamber.

[0204] Among them, the oxygen content in the cold storage room is reduced to below 21%.

[0205] With the above arrangement, when the door 2 closes the refrigerating chamber 1, the interior of the refrigerating chamber 1 is in a closed state at normal pressure, and at this time, the vacuum pump assembly 8 is most effective in performing the oxygen reduction action. At the same time, since a first modified atmosphere membrane assembly is provided at the top of the refrigerating chamber 1, the gas flowing out of the refrigerating chamber 1 passes through the first modified atmosphere membrane assembly, so that compared with other molecules, more oxygen enters the gas collection chamber through the first modified atmosphere membrane assembly. Ultimately, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the refrigerating chamber 1, thereby achieving the oxygen reduction action in the refrigerating chamber 1 and improving the food preservation quality of the refrigerating chamber 1.

[0206] At the same time, the pressure difference between the inside and outside of the refrigerator is used to form a first air flow circulation path outside the refrigerator 1, the vacuum pump assembly 8, and the box body 100. When the vacuum pump assembly 8 extracts the air in the refrigerator 1, the formed air flow circulation is used to perform the fresh air function in the refrigerator 1 to take away the carbon dioxide and other gases generated during the storage process that are not conducive to food preservation, thereby forming a gas replacement in the refrigerator.

[0207] Similarly, in some embodiments, the controller 6 is further configured such that, when the vacuum pump assembly 8 is working, the air in the fresh-keeping drawer 11 passes through the second modified atmosphere membrane assembly 102 and enters the second pipeline assembly, wherein the oxygen content of the gas extracted from the fresh-keeping drawer 11 by the vacuum pump assembly 8 is higher than the oxygen content of the remaining air in the fresh-keeping drawer 11 for at least a certain period of time, so as to reduce the oxygen content in the fresh-keeping drawer 11 and meet the preservation requirements of food in the fresh-keeping drawer 11.

[0208] In some embodiments, the operation of the vacuum pump assembly is also linked to the status of the refrigeration compartment.

[0209] Reference Figure 11 , taking the refrigeration chamber 1 as an example to illustrate the control logic for oxygen reduction in the embodiment of the present disclosure.

[0210] Determine whether the refrigeration chamber 1 is in a closed state (step S1101);

[0211] In step S1101, if the refrigerating chamber 1 is in the closed state, step S1102 is executed to turn on the vacuum pump assembly 8;

[0212] In step S1101, if the refrigerating chamber 1 is not in a closed state, step S1103 is executed to give an alarm to remind the user to close the door.

[0213] In some embodiments, the controller 6 is configured to receive a third signal to start the vacuum pump assembly 8 after the refrigerator is powered on. The vacuum pump assembly 8 evacuates the fresh-keeping drawer 11 and discharges the evacuated gas to other compartments or the outside of the box 100 to reduce the pressure in the fresh-keeping drawer 11, so that there is a pressure difference between the fresh-keeping drawer 11 and the refrigerator compartment 1; the air in the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second circulation gap to form at least a second airflow circulation path of the fresh-keeping drawer 11, the vacuum pump assembly 8, the outside of the box 100, and the refrigerator compartment 1, thereby replacing part of the gas in the fresh-keeping drawer 11.

[0214] Among them, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the fresh-keeping drawer 11 for at least a period of time, so that the oxygen content in the fresh-keeping drawer 11 is reduced, and the relative oxygen content in the fresh-keeping drawer 11 is lower than the relative oxygen content of the gas in the refrigerator 1.

[0215] In some embodiments, the controller 6 is configured to directly turn on the vacuum pump assembly 8 after the refrigerator is powered on. The vacuum pump assembly 8 evacuates the fresh-keeping drawer 11 and discharges the evacuated gas to other compartments or the outside of the box body 100 to reduce the pressure in the fresh-keeping drawer 11, so that there is a pressure difference between the fresh-keeping drawer 11 and the refrigerator compartment 1; the air in the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second circulation gap to form at least a second airflow circulation path of the fresh-keeping drawer 11, the vacuum pump assembly 8, the outside of the box body 100, and the refrigerator compartment 1, thereby replacing part of the gas in the fresh-keeping drawer 11.

[0216] Among them, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the fresh-keeping drawer 11 for at least a period of time, so that the oxygen content in the fresh-keeping drawer 11 is reduced, and the relative oxygen content in the fresh-keeping drawer 11 is lower than the relative oxygen content of the gas in the refrigerator 1.

[0217] Through the above arrangement, when the drawer body 111 is placed inside the drawer shell 112, the drawer body 111 and the drawer shell 112 form a closed state at normal pressure, and oxygen reduction is most effective at this time. At the same time, a second modified atmosphere membrane assembly 102 is provided on the top of the fresh-keeping drawer 11. The gas flowing out of the fresh-keeping drawer 11 passes through the second modified atmosphere membrane assembly 102, so that more oxygen than other molecules enter the gas collection chamber through the modified atmosphere membrane assembly. Ultimately, the oxygen content of the gas extracted by the vacuum pump is higher than the oxygen content of the gas in the fresh-keeping drawer 11, thereby achieving oxygen reduction in the fresh-keeping drawer 11 and improving the preservation quality of the food in the fresh-keeping drawer 11.

[0218] At the same time, the pressure difference between the inside and outside of the fresh-keeping drawer 11 and the pressure difference between the inside and outside of the refrigerator 1 are used to form a gas circulation path among the refrigerator 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box 100. When the vacuum pump assembly 8 extracts the air in the fresh-keeping drawer 11, the formed air flow circulation is used to realize the fresh air ventilation function of the fresh-keeping drawer 11, so as to take away the carbon dioxide and other gases generated during the storage process that are not conducive to the preservation of food, thereby forming a gas replacement inside the fresh-keeping drawer 11.

[0219] In some embodiments, a second door closing detection assembly 92 is provided on the opening side of the drawer shell 112 and is configured to detect whether the drawer shell 112 and the drawer body 111 form a closed space at normal pressure.

[0220] When the drawer body 111 moves toward the inside of the drawer shell 112 and reaches the bottom, it is determined that the fresh-keeping drawer 11 is in a closed state, and the drawer body 111 and the drawer shell 112 form a relatively closed space at normal pressure.

[0221] Among them, when the drawer shell 112 and the drawer body 111 form a closed space at normal pressure, the switch of the door body can be judged and then the fresh air and oxygen reduction mode of the fresh-keeping drawer 11 can be performed, or the fresh air and oxygen reduction mode of the fresh-keeping drawer 11 can be performed directly.

[0222] In some embodiments, before performing the fresh air and oxygen reduction mode of the fresh-keeping drawer 11, it is first determined whether the fresh-keeping drawer 11 is in a closed state. When the fresh-keeping drawer 11 is in a closed state, the fresh air and oxygen reduction mode is performed normally; when the fresh-keeping drawer 11 is not in a closed state, an alarm can be issued or the fresh air and oxygen reduction mode can be started at the same time as the alarm.

[0223] In some embodiments, the refrigeration chamber 1 and the fresh-keeping drawer 11 may be subjected to oxygen reduction operations simultaneously or one after the other.

[0224] The controller 6 is configured so that, after the refrigerator is powered on, the vacuum pump assembly 8 evacuates the refrigerating chamber 1 and the fresh-keeping drawer 11 and discharges the evacuated gas to other compartments or outside the cabinet 100, thereby forming a pressure difference between the inside and outside of the refrigerating chamber 1 and the inside and outside of the fresh-keeping drawer 11;

[0225] The air outside the box 100 enters the refrigerating chamber 1 through the first circulation gap to form a first airflow circulation path between the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the box 100, thereby replacing part of the gas in the refrigerating chamber 1;

[0226] Part of the gas in the refrigerator compartment 1 is drawn out by the vacuum pump assembly 8 through the first modified atmosphere membrane assembly 101, and part of it enters the fresh-keeping drawer 11 through the second flow gap, thereby forming a second airflow circulation path between the refrigerator compartment 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the cabinet 100, thereby replacing part of the gas in the fresh-keeping drawer 11;

[0227] The oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the fresh food drawer 11 for at least a certain period of time, and the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the refrigerator compartment 1 for at least a certain period of time. Thus, for at least a certain period of time, the relative oxygen content of the gas in the refrigerator compartment 1 is lower than the relative oxygen content of the gas outside the refrigerator body 100; and for at least a certain period of time, the relative oxygen content of the gas in the fresh food drawer 11 is lower than the relative oxygen content of the gas in the refrigerator compartment 1.

[0228] Through the above-mentioned setting, a first air flow circulation path is formed among the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the box body 100, as well as a second air flow circulation path is formed among the refrigerating chamber 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box body 100, thereby realizing a fresh air reduction oxygen mode for the refrigerating chamber 1 and the fresh-keeping drawer 11.

[0229] At the same time, when the fresh air oxygen reduction mode of the fresh-keeping drawer 11 is executed together with the fresh air oxygen reduction mode of the refrigerator compartment 1, the fresh air oxygen reduction process of the fresh-keeping drawer 11 is accelerated. The air in the refrigerator compartment 1 enters the fresh-keeping drawer 11, which not only promotes air exchange in the fresh-keeping drawer 11, but also accelerates the air circulation in the refrigerator compartment 1 itself.

[0230] Reference Figure 16 , explaining the control logic of the fresh air oxygen reduction mode of the fresh-keeping drawer 11.

[0231] The refrigerator is powered on (step S1601);

[0232] Whether the fresh-keeping drawer 11 is in a closed state (step S1602);

[0233] In step S1602, if the fresh-keeping drawer 11 is in a closed state, step S1603 is executed, and the vacuum pump assembly 8 evacuates the fresh-keeping drawer 11;

[0234] In step S1602, if the fresh-keeping drawer 11 is not in the closed state, step S1604 is executed, and the refrigerator alarms or the vacuum pump component 8 performs vacuuming in a preset working state.

[0235] In the above steps, when the fresh-keeping drawer 11 is not in the closed state, the vacuum pump assembly 8 can pump air according to the preset working state to prepare the fresh-keeping drawer 11, and then enter the normal pumping state after detecting that the fresh-keeping drawer 11 is closed.

[0236] In the preset working state, the working frequency of the vacuum pump assembly 8 is greater than the working frequency of the vacuum pump assembly 8 in the normal exhaust state, so as to form a rapid replacement of airflow in a small area in the fresh-keeping drawer 11.

[0237] In some embodiments, in order to better regulate the oxygen content in each compartment of the refrigerator, the refrigerator is also provided with a regulating valve 5, which is configured to control whether the first modified atmosphere membrane assembly 101 and the vacuum pump assembly 8 and the second modified atmosphere membrane assembly 102 and the vacuum pump assembly 8 are connected.

[0238] Exemplarily, the regulating valve 5 can be configured as a three-way valve, and by adjusting the on-off position of the regulating valve 5 , the oxygen in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 can be selectively reduced.

[0239] Based on the above, the controller 6 is configured to receive an oxygen reduction instruction for a corresponding compartment, control the state of the regulating valve 5, and implement an oxygen reduction action for the corresponding compartment.

[0240] Among them, the oxygen can be reduced for the refrigeration chamber 1 and the fresh-keeping drawer 11 at the same time, and the size of the low-oxygen space can be expanded to meet the user's demand for low-oxygen storage of food.

[0241] Reference Figure 12, illustrating the control logic for switching to oxygen reduction in the refrigeration chamber 1 and / or the fresh-keeping drawer 11 in the embodiment of the present disclosure.

[0242] Determine whether an oxygen reduction instruction from the refrigeration chamber 1 is received (step S1201);

[0243] In step S1201, if the oxygen reduction instruction of the refrigerator compartment 1 is received, step S1202 is executed to determine whether the oxygen reduction instruction of the fresh-keeping drawer 11 is received;

[0244] In step S1202, if the oxygen reduction instruction is received from the fresh-keeping drawer 11, step S1203 is executed to adjust the regulating valve 5, and the vacuum pump assembly 8 is connected to the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102;

[0245] In step S1202, if no oxygen reduction instruction is received from the fresh-keeping drawer 11, step S1204 is executed to adjust the regulating valve 5 and connect the vacuum pump assembly 8 to the first modified atmosphere membrane assembly 101;

[0246] In step S1201, if the oxygen reduction instruction from the refrigerator compartment 1 is not received, step S1205 is executed to determine whether the oxygen reduction instruction from the fresh-keeping drawer 11 is received;

[0247] In step S1205, if the oxygen reduction instruction is received from the fresh-keeping drawer 11, step S1206 is executed to adjust the regulating valve 5 and connect the vacuum pump assembly 8 to the second modified atmosphere membrane assembly 102;

[0248] In step S1205 , if no oxygen reduction instruction is received from the fresh-keeping drawer 11 , step S1207 is executed to adjust the regulating valve 5 , and the vacuum pump assembly 8 is disconnected from the first and second modified atmosphere membrane assemblies 101 and 102 .

[0249] In step S1203 , if the vacuum pump assembly 8 is connected to the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102 , the vacuum pump assembly 8 executes the fresh air oxygen reduction mode for the refrigeration chamber 1 and the fresh-keeping drawer 11 .

[0250] During this process, the air outside the box 100 enters the refrigerating chamber 1 through the first circulation gap to form a first airflow circulation path among the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the box 100, thereby replacing part of the gas in the refrigerating chamber 1; part of the gas in the refrigerating chamber 1 is extracted by the vacuum pump assembly 8 through the first gas-conditioning membrane assembly 101, and part of it enters the fresh-keeping drawer 11 through the second circulation gap to form a second airflow circulation path among the refrigerating chamber 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box 100, thereby replacing part of the gas in the fresh-keeping drawer 11; thereby achieving the purpose of fresh air ventilation and oxygen reduction between the two chambers of the refrigerating chamber 1 and the fresh-keeping drawer 11.

[0251] In some embodiments, an odor detection device is disposed in the refrigerating chamber 1 and is configured to detect the concentration of odor in the refrigerating chamber 1. The odor detection device disposed in the refrigerating chamber 1 is defined as a first odor detection device. The odor detection device can at least identify volatile amine substances and volatile nitrogen substances.

[0252] The controller 6 is configured to, when the odor concentration in the cold storage chamber 1 detected by the odor detection device reaches a first preset odor concentration threshold, turn on the vacuum pump assembly 8, and use the vacuum pump assembly 8 to evacuate the cold storage chamber 1 to promote air circulation inside and outside the cold storage chamber 1.

[0253] In some embodiments, an odor detection device is disposed in the fresh-keeping drawer 11 and is configured to detect the concentration of odor in the fresh-keeping drawer 11. The odor detection device disposed in the fresh-keeping drawer 11 is defined as a second odor detection device.

[0254] The controller 6 is configured to, when the odor concentration in the fresh-keeping drawer 11 detected by the second odor detection device reaches a second preset odor concentration threshold, turn on the vacuum pump assembly 8, and use the vacuum pump assembly 8 to evacuate the fresh-keeping drawer 11 to promote air circulation inside and outside the fresh-keeping drawer 11.

[0255] In order to further improve the efficiency of oxygen reduction, the controller 6 is further configured to turn on the refrigeration fan 15 when the vacuum pump is working, so as to accelerate the air flow in the refrigeration chamber 1.

[0256] During the operation of the vacuum pump, there are two states of the refrigerator: refrigeration or non-refrigeration. When the refrigerator is in the refrigeration state, it is considered that the refrigeration fan 15 is in the on state and does not need to be turned on again.

[0257] When the refrigerator is not refrigerating, the refrigeration fan 15 is turned on. The refrigeration work of the refrigeration system is not within the scope of improvement of the present disclosure and will not be described in detail here.

[0258] In some embodiments, the controller 6 is configured to, when food is placed in the cold storage chamber 1, receive images captured by the image acquisition device 3 in the cold storage chamber 1, obtain the type of food and thereby obtain a first required oxygen content range for the food, turn on the vacuum pump assembly 8, and adjust the regulating valve 5 to connect the cold storage chamber 1 with the vacuum pump assembly 8; and turn off the vacuum pump assembly 8 when the oxygen concentration detected by the oxygen concentration detection device 4 reaches the upper limit value of the first required oxygen content range.

[0259] In some embodiments, the controller 6 is further configured to, when food is placed in the fresh-keeping drawer 11, receive an image captured by the image acquisition device 3 in the fresh-keeping drawer 11, obtain the type of food and thereby obtain a second required oxygen content range for the food, start the vacuum pump assembly 8, and adjust the regulating valve 5 to connect the fresh-keeping drawer 11 to the vacuum pump assembly 8;

[0260] When the oxygen concentration in the fresh-keeping drawer 11 reaches the upper limit of the second required oxygen content range, the vacuum pump assembly 8 is turned off.

[0261] Reference Figure 13 , illustrating another control logic for oxygen reduction of the refrigerating chamber 1 in the embodiment of the present disclosure.

[0262] The image acquisition device 3 acquires images in the refrigeration chamber 1 and sends the images to the controller 6 (step S1301);

[0263] Obtaining a corresponding first required oxygen content range (step S1302);

[0264] Control the vacuum pump assembly 8 to start (step S1303);

[0265] Determine whether the oxygen concentration in the refrigerating chamber 1 reaches the upper limit of the first required oxygen content range (step S1304);

[0266] In step S1304, if the oxygen concentration reaches the upper limit of the first required oxygen content range, step S1305 is executed to turn off the vacuum pump assembly 8;

[0267] In step S1304 , if the oxygen concentration does not reach the upper limit of the first required oxygen content range, step 1304 is executed.

[0268] In the above steps, the required oxygen content range is determined based on the type of food obtained by image recognition, and oxygen reduction actions are performed for different types of food to achieve precise oxygen reduction, which can better meet the user's refined storage needs.

[0269] In some embodiments, the refrigerator further includes another storage compartment (not shown in the figure), which can be arranged inside the box body 100 or outside the box body 100. The storage compartment includes an oxygen inlet connected to the gas outlet end of the vacuum pump assembly 8 to receive gas from the gas collection chamber to form an oxygen-rich space in the storage compartment. The oxygen-rich space is defined as a space in which the oxygen content is higher than the oxygen content in the air.

[0270] The vacuum pump assembly 8 is configured to draw the gas in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 into the gas collection chamber through the modified atmosphere membrane assembly, so that more oxygen in the air around the modified atmosphere membrane assembly than nitrogen around the modified atmosphere membrane assembly passes through the modified atmosphere membrane assembly into the gas collection chamber, thereby reducing the oxygen concentration in the refrigerating chamber 1 and / or the fresh-keeping drawer 11;

[0271] The gas in the gas collection chamber enters the storage compartment through the gas outlet of the vacuum pump assembly 8, so that a high oxygen concentration space is formed in the storage compartment.

[0272] It should be noted that a nitrogen-rich and oxygen-poor gas atmosphere is formed in the refrigeration chamber 1 or the fresh-keeping drawer 11 to preserve fruits and vegetables, and a high-oxygen gas atmosphere with an oxygen content of 22% to 28% is formed in the above-mentioned storage compartment to preserve meat.

[0273] Of course, a gas collection chamber may also be provided at the exhaust port of the vacuum pump assembly 8, and the corresponding storage compartment requiring high oxygen conditions may be selectively connected to the gas collection chamber.

[0274] In some embodiments, the gas outlet of the vacuum pump assembly 8 can also be connected to the outside of the box 100, and the controller 6 is configured to discharge the extracted gas out of the box 100 when the oxygen content in the storage room reaches the lower limit of the preset oxygen concentration range but the vacuum pump assembly 8 has not stopped the pumping action.

[0275] Reference Figure 14 , illustrating the control logic of oxygenation of the storage compartment in the embodiment of the present disclosure.

[0276] Receiving an oxygenation instruction from a storage compartment (step S1401);

[0277] Turn on the vacuum pump assembly 8 (step S1402);

[0278] Determine whether the oxygen content in the storage room has reached the lower limit of a preset oxygen concentration range (S1403);

[0279] In step S1403, if the oxygen content reaches the lower limit of the preset oxygen concentration range, step S1404 is executed to determine whether the oxygen concentration of the corresponding exhaust chamber reaches the required oxygen content range;

[0280] In step S1404, if the oxygen concentration reaches the required oxygen content range, step S1405 is executed to turn off the vacuum pump assembly 8;

[0281] In step S1404, if the oxygen concentration does not reach the required oxygen content range, step S1406 is executed to allow the air outlet of the vacuum pump assembly 8 to be connected to the outside of the box 100;

[0282] In step S1403 , if the oxygen content does not reach the lower limit of the preset oxygen concentration range, step S1403 is executed.

[0283] In the above embodiment, the refrigerator includes a box body 100 having a top and a bottom arranged in the longitudinal direction, the box body 100 includes an outer shell 110 and an inner liner 120, the inner liner 120 is arranged inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is configured to form an insulation layer. The interior of the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12 and a fresh-keeping drawer 11, and the refrigerator further includes a door body 2 for opening and closing the refrigerator compartment 1, an atmosphere-controlled membrane assembly provided on the top of the refrigerator compartment 1, a vacuum pump assembly 8 provided on the compressor compartment 13 and a vacuum pump for connecting the vacuum pump. The assembly 8 and the piping assembly 7 of the modified atmosphere membrane assembly, the vacuum pump assembly 8 is configured to extract air from the refrigerating chamber 1 and / or the fresh-keeping drawer 11. One end of the piping assembly 7 is connected to the vacuum pump assembly 8, and the other end of the piping assembly 7 is connected to the modified atmosphere membrane assembly through the insulation layer. The piping assembly 7 is configured to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8. The controller 6 is configured so that when the door 2 closes the refrigerating chamber 1 and the vacuum pump assembly 8 is turned on, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content in the refrigerating chamber 1 for at least a certain period of time, thereby reducing the oxygen content in the refrigerating chamber 1. This helps the refrigerating chamber 1 preserve perishable ingredients such as fruits, vegetables, and seafood, and improves the food preservation ability of the refrigerator.

[0284] At the same time, through the setting of pipelines, the extracted air with a higher oxygen content than that in the air is introduced into the compartment that needs oxygen enrichment, effectively realizing the utilization of air and eliminating or reducing the work of the device that generates oxygen.

[0285] In some embodiments, a dehumidifier is installed at the air inlet of the storage compartment with oxygen enrichment requirement to prevent moisture in other compartments from entering the compartment and affecting storage. Exemplarily, the dehumidifier can be configured as a desiccant.

[0286] In some embodiments, a sterilization device is installed at the air inlet of the storage compartment with oxygen enrichment requirement to prevent bacteria from other compartments from entering and contaminating the oxygen-enriched storage compartment. For example, the sterilization device can be configured as an ion generator or an ozone generator.

[0287] In some embodiments, the refrigerator further includes a first humidity detection device 14, which is disposed in the refrigerating chamber 1 and configured to detect the humidity in the refrigerating chamber 1. The humidity detection device in the refrigerating chamber is defined as the first humidity detection device 14. Exemplarily, the first humidity detection device 14 is configured as a humidity sensor.

[0288] In some embodiments, the embodiment includes the hardware structure of the above embodiment, wherein the controller 6 is configured to receive the humidity value detected by the first humidity detection device 14, and when the humidity value reaches a preset humidity value, turn on the vacuum pump assembly 8, the vacuum pump assembly 8 evacuates the cold storage chamber 1 and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the cold storage chamber 1; the air outside the box 100 enters the cold storage chamber 1 through the circulation gap to form at least a first airflow circulation path of the cold storage chamber 1, the vacuum pump assembly 8, and the outside of the box 100, so as to discharge the moisture in the cold storage chamber 1 out of the cold storage chamber 1 through the airflow circulation.

[0289] Through the above-mentioned arrangement, the gas in the refrigerating chamber 1 is extracted by the vacuum pump assembly 8, and the air outside the box body 100 enters the refrigerating chamber 1 through the first circulation gap. The air flow circulation takes away the water vapor in the air in the refrigerating chamber 1, thereby effectively reducing the humidity in the refrigerating chamber 1 and reducing the generation of condensation inside the refrigerator.

[0290] In some embodiments, the embodiment includes the hardware structure of the above embodiment, wherein the controller 6 is configured to receive the humidity value detected by the first humidity detection device 14, and when the humidity value reaches a preset humidity value, turn on the vacuum pump assembly 8, and the vacuum pump assembly 8 evacuates the cold storage chamber 1 through the first gas-conditioning membrane assembly 101 and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the cold storage chamber 1; the air outside the box 100 enters the cold storage chamber 1 through the circulation gap to form at least a first airflow circulation path of the cold storage chamber 1, the vacuum pump assembly 8, and the outside of the box 100, so as to discharge the moisture in the cold storage chamber 1 out of the cold storage chamber 1 through the airflow circulation.

[0291] Through the above arrangement, the vacuum pump assembly 8 is used to extract the gas from the refrigerating chamber 1. Since the first modified atmosphere membrane assembly 101 is provided at the air outlet position of the refrigerating chamber 1, the gas is sucked out through the first modified atmosphere membrane assembly 101, so that more oxygen in the gas in the refrigerating chamber 1 is sucked out than other gases. The air outside the box 100 enters the refrigerating chamber 1 through the first circulation gap, and the water vapor in the air in the refrigerating chamber 1 is taken away by the air circulation, thereby effectively reducing the humidity in the refrigerating chamber 1 and reducing the generation of condensation inside the refrigerator.

[0292] In some embodiments, the controller 6 is configured to reduce the operating frequency of the vacuum pump assembly 8 or shut down the vacuum pump assembly 8 to slow down or stop the airflow circulation in the refrigeration chamber 1 when the humidity value drops to a second preset humidity value.

[0293] Reference Figure 15 , illustrating the anti-condensation control logic of the refrigerating chamber 1 in the present disclosure.

[0294] Receiving the humidity value of the refrigerating chamber 1 detected by the first humidity detection device 14 (step S1501);

[0295] Determine whether the humidity value reaches a first preset humidity value (step 1502);

[0296] In step S1502, when the humidity value reaches the first preset humidity value, step S1503 is executed to start the vacuum pump assembly 8;

[0297] Determine whether the humidity value drops to a second preset humidity value (step S1505);

[0298] In step S1505, if the humidity value drops to the second preset humidity value, step 1506 is executed to turn off the vacuum pump assembly 8 or reduce the operating frequency of the vacuum pump assembly 8;

[0299] In step S1505, if the humidity value does not drop to the second preset humidity value, step S1507 is executed to maintain the working state of the vacuum pump assembly 8;

[0300] In step S1502 , when the humidity value does not reach the first preset humidity value, step S1504 is executed to maintain the working state of the vacuum pump assembly 8 .

[0301] By controlling the working state of the vacuum pump assembly 8, the humidity value in the refrigerating chamber 1 is controlled, thereby controlling the condensation in the refrigerating chamber 1, avoiding condensation in the refrigerating chamber 1, and improving the refrigeration effect.

[0302] Among them, the above technical solution is also used in the fresh-keeping drawer 11. By controlling the working state of the vacuum pump component 8 related to the fresh-keeping drawer 11, the humidity value of the air in the fresh-keeping drawer 11 is controlled, thereby controlling the condensation situation in the fresh-keeping drawer 11.

[0303] In the above embodiment, the refrigerator includes a box body 100 having a top and a bottom arranged along the length direction, the box body 100 includes an outer shell 110 and an inner liner 120, the inner liner 120 is arranged inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is configured to form an insulation layer. The interior of the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12 and a fresh-keeping drawer 11, and the refrigerator further includes a door body 2 for opening and closing the refrigerator compartment 1, a first gas-conditioning membrane assembly provided at the top of the refrigerator compartment 1, a vacuum pump assembly 8 provided at the compressor compartment 13, and a pipeline assembly for connecting the vacuum pump assembly 8 and the gas-conditioning membrane assembly, the vacuum pump assembly 8 is configured to extract air from the refrigerator compartment 1 and / or the fresh-keeping drawer 11, and the pipeline assembly 7 One end of the pipe assembly 7 is connected to the vacuum pump assembly 8, and the other end of the pipe assembly 7 is connected to the modified atmosphere membrane assembly through the insulation layer. The pipe assembly 7 is configured to provide a flow channel for the gas extracted by the vacuum pump assembly 8. The controller 6 is configured to receive the humidity value detected by the first humidity detection device 14 and, when the humidity value reaches a preset humidity value, activate the vacuum pump assembly 8. The vacuum pump assembly 8 extracts air from the refrigerating chamber 1 and discharges the extracted gas to other compartments or to the outside of the housing 100, thereby reducing the pressure within the refrigerating chamber 1. Air outside the housing 100 enters the refrigerating chamber 1 through the circulation gap, thereby forming at least a first airflow circulation path between the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the housing 100. The airflow circulates to remove moisture from the air in the refrigerating chamber 1, effectively reducing the humidity within the refrigerating chamber 1. This helps the refrigerating chamber 1 preserve perishable ingredients such as meat and seafood, thereby improving the refrigerator's ability to preserve food freshness.

[0304] In some embodiments, the refrigerator further includes a second humidity detection device 141, which is disposed in the fresh-keeping drawer 11 and configured to detect the humidity value in the fresh-keeping drawer 11 and send the humidity value to the controller 6. Exemplarily, the second humidity detection device 141 is configured as a humidity sensor.

[0305] In some embodiments, the embodiment includes the hardware structure of the above embodiment, wherein the controller 6 is configured to receive the humidity value of the second humidity detection device 141, and when the humidity value reaches a third preset humidity value, turn on the vacuum pump assembly 8, the vacuum pump assembly 8 evacuates the fresh-keeping drawer 11, and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the fresh-keeping drawer 11; the air in the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second flow gap to form at least a second airflow circulation path outside the refrigerator compartment 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the box 100, so as to discharge the moisture in the fresh-keeping drawer 11 out of the fresh-keeping drawer 11 through the airflow circulation.

[0306] Through the above arrangement, the vacuum pump assembly 8 is used to extract the gas from the refrigerating chamber 1, and the air outside the box body 100 enters the refrigerating chamber 1 through the first circulation gap. The air flow circulation takes away the water vapor in the air in the refrigerating chamber 1, thereby effectively reducing the humidity in the refrigerating chamber 1.

[0307] Through the above-mentioned setting, the vacuum pump assembly 8 is used to extract the gas in the fresh-keeping drawer 11, and the air circulation is used to take away the excess moisture in the air in the fresh-keeping drawer 11, thereby effectively reducing the humidity of the fresh-keeping drawer 11 and reducing the generation of condensation inside the refrigerator.

[0308] In some embodiments, the embodiment includes the hardware structure of the above embodiment, wherein the controller 6 is configured to receive the humidity value of the second humidity detection device 141, and when the humidity value reaches a third preset humidity value, turn on the vacuum pump assembly 8, and the vacuum pump assembly 8 evacuates the fresh-keeping drawer 11 through the second gas-conditioning membrane assembly 102, and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the fresh-keeping drawer 11; the air in the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second flow gap to form at least a second airflow circulation path outside the refrigerator compartment 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the box 100, so as to discharge the moisture in the fresh-keeping drawer 11 out of the fresh-keeping drawer 11 through the airflow circulation.

[0309] Through the above-mentioned arrangement, the vacuum pump assembly 8 is used to extract the gas in the fresh-keeping drawer 11. Since the second modified atmosphere membrane assembly 102 is arranged at the air outlet position of the fresh-keeping drawer 11, the gas is sucked out through the second modified atmosphere membrane assembly 102, so that the oxygen in the gas in the fresh-keeping drawer 11 is sucked out more than other gases. The air in the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second circulation gap, and the excess moisture in the air in the fresh-keeping drawer 11 is taken away by the air circulation, thereby effectively reducing the humidity of the fresh-keeping drawer 11 and reducing the generation of condensation inside the refrigerator.

[0310] In some embodiments, the humidity detection value of the first humidity detection device 14 in the refrigerating chamber 1 also needs to be considered to prevent moisture in the air in the refrigerating chamber 1 from entering the fresh-keeping drawer 11 through air circulation.

[0311] In some embodiments, the controller 6 is configured to reduce the operating frequency of the vacuum pump assembly 8 or turn off the vacuum pump assembly 8 when the humidity value of the fresh-keeping drawer 11 drops to a fourth preset humidity value, thereby slowing down or stopping the airflow circulation inside and outside the fresh-keeping drawer 11.

[0312] Reference Figure 17 , illustrating the anti-condensation control logic of the fresh-keeping drawer 11 in the present disclosure.

[0313] Receiving the humidity value of the fresh-keeping drawer 11 detected by the second humidity detection device 141 (step S1701);

[0314] Determine whether the humidity value reaches a third preset humidity value (step S1702);

[0315] In step S1702, when the humidity value reaches the third preset humidity value, step S1703 is executed to turn on the vacuum pump assembly 8;

[0316] Determine whether the humidity value drops to a fourth preset humidity value (step S1705);

[0317] In step S1705, if the humidity value drops to the fourth preset humidity value, step S1706 is executed to turn off the vacuum pump assembly 8 or reduce the operating frequency of the vacuum pump assembly 8;

[0318] In step S1705, if the humidity value does not drop to the fourth preset humidity value, step S1707 is executed to maintain the working state of the vacuum pump assembly 8;

[0319] In step S1702 , when the humidity value does not reach the third preset humidity value, step S1704 is executed to maintain the working state of the vacuum pump assembly 8 .

[0320] By controlling the working state of the vacuum pump assembly 8, the humidity value in the fresh-keeping drawer 11 is controlled, thereby controlling the condensation in the fresh-keeping drawer 11, avoiding condensation in the fresh-keeping drawer 11, and improving the refrigeration effect.

[0321] In the above embodiment, the refrigerator includes a box body 100 having a top and a bottom arranged along the length direction, the box body 100 includes an outer shell 110 and an inner liner 120, the inner liner 120 is arranged inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is configured to form an insulation layer, and the interior of the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12 and a fresh-keeping drawer 11, and the refrigerator also includes a door body 2 for opening and closing the refrigerator compartment 1, a modified atmosphere membrane assembly provided on the top of the refrigerator compartment 1, a vacuum pump assembly 8 provided on the compressor compartment 13, and a pipeline assembly 7 for connecting the vacuum pump assembly 8 and the modified atmosphere membrane assembly, the vacuum pump assembly 8 is configured to extract air from the refrigerator compartment 1 and / or the fresh-keeping drawer 11, and one end of the pipeline assembly 7 is connected to the vacuum pump assembly 8 The other end of the pipe assembly 7 is connected to the modified atmosphere membrane assembly through the insulation layer. The pipe assembly 7 is configured to provide a flow channel for the gas extracted by the vacuum pump assembly 8. The controller 6 is configured to receive the humidity value detected by the second humidity detection device 14114. When the humidity value reaches a preset humidity value, the vacuum pump assembly 8 is activated. The vacuum pump assembly 8 extracts air from the fresh-keeping drawer 11 and discharges the extracted gas to other compartments or the outside of the housing 100, thereby reducing the pressure within the fresh-keeping drawer 11. Air from the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the circulation gap, forming at least a second airflow circulation path between the refrigerator compartment 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the housing 100. Moisture vapor in the fresh-keeping drawer 11 is removed by the air circulation, effectively reducing the humidity within the fresh-keeping drawer 11. This helps the fresh-keeping drawer 11 preserve perishable ingredients such as meat and seafood, thereby improving the refrigerator's ability to preserve food.

[0322] When the refrigerator is in fresh air and oxygen reduction mode, bacteria from outside the room are introduced. At the same time, some bacteria and odors are also generated in the food storage, which may affect the storage effect of the refrigeration chamber 1 or the fresh-keeping drawer 11. The introduced bacteria may include planktonic bacteria suspended in the air, Alcaligenes muciniphila, Alcaligenes paraalcaligenes, Achromobacter, Aerobacter, Lactobacillus, Leuconostoc, and other airborne bacteria.

[0323] Due to the implementation of fresh air oxygen reduction mode, air circulation will cause cross contamination between compartments.

[0324] To solve the above problem, in some embodiments, the refrigerator is further provided with a sterilization module, which can be arranged in the refrigerating chamber 1. The sterilization module arranged in the refrigerating chamber 1 is defined as a first sterilization module.

[0325] Exemplarily, the first sterilization module can be set as an ion generating device, which is configured to generate ion groups and / or ozone for removing bacteria in the box 100. Generally speaking, the ion types in the ion group may include strong oxidizing ions, positive ions and negative ions, etc. Exemplarily, strong oxidizing ions include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), ground state oxygen (O*), nitrogen oxides (NOx), and the types of bacteria in the box 100 include planktonic bacteria in the air in the refrigerator 1, attached bacteria attached to the inner wall of the refrigerator 1, attached bacteria on food, etc.

[0326] During the contact between air and ion groups, the ions can adsorb and decompose odor molecules and floating bacteria in the air. At the same time, the ions will flow into the refrigeration chamber 1 along with the air flow, removing the attached bacteria on the inner wall of the refrigeration chamber 1 or the surface of the food.

[0327] During the vacuum pump assembly 8's vacuuming process, the air in the refrigerating chamber 1 will be extracted, and the ion groups in the air will enter the first pipeline assembly along with the airflow to remove the attached bacteria and floating bacteria inside the first pipeline assembly.

[0328] In some embodiments, the refrigerator also includes a high-voltage power supply, which is configured to provide a high-voltage voltage to the ion generating device so that it discharges to form an ion group for sterilization inside the refrigerator. In this embodiment, the generation of ion concentration can be controlled by controlling the discharge rules of the high-voltage power supply.

[0329] In some embodiments, reference Figures 24 to 32 The ion generating device includes a shell 31 , in which an accommodating space 35 and an inlet 32 ​​and an outlet 33 communicating with the accommodating space 35 are provided.

[0330] The device for generating ion clusters is installed in the accommodating space 35. After generating ion clusters, airflow from the refrigerator compartment 1 or the fresh-keeping drawer 11 enters the accommodating space 35 through the inlet 32. After reacting with the ion clusters, the airflow returns to the refrigerator compartment 1 or the fresh-keeping drawer 11 through the outlet 33. Simultaneously, the generated ion clusters diffuse into the refrigerator compartment 1 or the fresh-keeping drawer 11 through the inlet 32 ​​and the outlet 33.

[0331] In some embodiments, reference Figures 25 to 26The ion generator includes a strong oxidizing ion generator 362. The strong oxidizing ion generator 362 uses needle-tip corona discharge to generate a large number of strong oxidizing active substances and ions. Strong oxidizing active substances include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), ground oxygen (O*), nitrogen oxides (NOx), etc., which diffuse into the interior of the refrigerator's cold storage compartment 1, the inner wall of the fresh-keeping drawer 11, and the surface of food, effectively killing and removing attached bacteria. At the same time, the concentration of ozone (O3) can be controlled by applying a discharge control rule to keep the ozone concentration below the user's perception threshold. Exemplarily, the discharge control rule is the relationship between the applied voltage and the ozone concentration.

[0332] In some embodiments, the controller 6 utilizes a discharge control rule to control the concentration of the generated strong oxidizing ions so that the concentration is below a set threshold value, which is set based on the user's perception. This allows sterilization to be performed without the user's awareness, effectively improving the user experience while also preventing excessively high concentrations of strong oxidizing ions from affecting the preservation of food within the box 100.

[0333] In some embodiments, reference Figure 27 、 32 The strong oxidizing ion generating device 362 includes an emitting electrode structure 3622, one end of which is provided with a needle tip structure 3621. The emitting electrode structure 3622 is configured to utilize a high voltage provided by a high voltage power supply to cause the needle tip structure 3621 to generate a corona discharge, thereby forming a group of strong oxidizing ions. Specifically, two or more needle tip structures 3621 are provided.

[0334] In some embodiments, reference Figure 25 The first sterilization module also includes a built-in fan 34, which is arranged in the shell 31 and on one side of the strong oxidizing ion generating device 362. When sterilization is performed, the built-in fan 34 is turned on to promote air circulation in the space and accelerate the sterilization efficiency.

[0335] In some embodiments of the present disclosure, the emitting electrode structure 3622 further includes a counter electrode and a bracket, wherein the bracket is detachably fixed in the accommodating space 35, and the counter electrode is mounted on the bracket.

[0336] The counter electrode includes a high-voltage motor and a collecting electrode. The high-voltage electrode is connected to high voltage, and the collecting electrode is grounded or connected to low voltage. The high-voltage electrode and the collecting electrode are fixed on the bracket at intervals.

[0337] A needle tip structure 3621 is provided on the side of the high voltage electrode facing the collecting electrode, and discharge is performed in the counter electrode of the strong oxidizing ion generating device 362 using the needle tip structure 3621 .

[0338] For example, the high-voltage electrode is connected to a negative high voltage, which discharges at the needle tip structure 3621 to generate a large number of negative ions. The generated negative ions come into contact with bacteria and dust in the air, thereby having a sterilizing effect. Specifically, the opposing electrode is grounded or the relative voltage of the opposing electrode to the high-voltage electrode of the needle tip structure 3621 is 0, and the DC negative high voltage range of the two needle tip electrodes is -2.5 to -5 kV.

[0339] In some embodiments, the DC negative high voltage of the two needle tip electrodes ranges from -2.5 to -3 kV.

[0340] In some embodiments, the DC negative high voltage of the two needle tip electrodes ranges from -3 to -4.5 kV.

[0341] In some embodiments, the DC negative high voltage of the two needle tip electrodes ranges from -4.5 to -5 kV.

[0342] In some embodiments, the ion generating device further includes a positive and negative ion generating device 361 , which can efficiently and quickly remove floating bacteria in the air in the refrigerator.

[0343] Reference Figure 28 The positive and negative ion generating device 361 further includes a positive electrode 3611 and a negative electrode 3612 arranged on the side of the built-in fan 34 near the outlet 33. The positive electrode 3611 and the negative electrode 3612 are arranged along the length direction of the shell 31. The positive electrode 3611 and the negative electrode 3612 use the high voltage provided by the high voltage power supply to form positive ion groups and negative ion groups.

[0344] In some embodiments, the positive and negative ion generating device 361 utilizes carbon brushes as discharge electrodes. Of course, the technical solutions disclosed herein are applicable to other electrodes, exemplified by needle-shaped discharge electrodes. The negative high-voltage carbon brush electrode has a DC negative high-voltage range of -2kV to -9kV, while the positive high-voltage carbon brush electrode has a DC positive high-voltage range of 2kV to 9kV. It should be noted that the positions of the positive and negative high-voltage electrodes are not limited in the diagram; the positions of the positive and negative high-voltage electrodes can be interchanged.

[0345] In some embodiments, the positive and negative ion generating device 361 utilizes carbon brushes as discharge electrodes. Of course, the technical solutions disclosed herein are applicable to other electrodes, exemplified by needle-shaped discharge electrodes. The negative high-voltage carbon brush electrode has a DC negative high-voltage range of -2kV to -3kV, while the positive high-voltage carbon brush electrode has a DC positive high-voltage range of 2kV to 3kV. It should be noted that the positions of the positive and negative high-voltage electrodes are not limited in the diagram; the positions of the positive and negative high-voltage electrodes can be interchanged.

[0346] In some embodiments, the positive and negative ion generating device 361 utilizes carbon brushes as discharge electrodes. Of course, the technical solutions disclosed herein are applicable to other electrodes, exemplified by needle-shaped discharge electrodes. The negative high-voltage carbon brush electrode has a DC negative high-voltage range of -3kV to -6kV, while the positive high-voltage carbon brush electrode has a DC positive high-voltage range of 3kV to 6kV. It should be noted that the positions of the positive and negative high-voltage electrodes are not limited in the diagram; the positions of the positive and negative high-voltage electrodes can be interchanged.

[0347] In some embodiments, the positive and negative ion generating device 361 utilizes carbon brushes as discharge electrodes. Of course, the technical solutions disclosed herein are applicable to other electrodes, exemplified by needle-shaped discharge electrodes. The negative high-voltage carbon brush electrode has a DC negative high-voltage range of -6kV to -9kV, while the positive high-voltage carbon brush electrode has a DC positive high-voltage range of 6kV to 9kV. It should be noted that the positions of the positive and negative high-voltage electrodes are not limited in the diagram; the positions of the positive and negative high-voltage electrodes can be interchanged.

[0348] In some embodiments, in order to solve the problem of bacteria introduced into the refrigerating chamber 1 due to the fresh air oxygen reduction mode, the controller 6 is configured to manually or automatically start the first sterilization module after the fresh air oxygen reduction mode is completed. The first sterilization module generates ion clusters to sterilize the air in the refrigerating chamber 1, the inner wall of the refrigerating chamber 1, and the food, thereby improving the preservation conditions of the food in the refrigerating chamber 1.

[0349] In some embodiments, the first sterilization module can start working after the vacuum pump assembly 8 is turned off or when the vacuum pump assembly 8 is about to be turned off to eliminate bacteria outside the cabinet 100 introduced into the refrigeration chamber 1 during the execution of the fresh air oxygen reduction mode.

[0350] It should be noted that during the normal storage process of the refrigerating chamber 1, the ion generating device will be turned on at regular intervals to sterilize the refrigerating chamber 1 to remove attached bacteria and germs in the refrigerating chamber 1 and extend the shelf life of the food.

[0351] In some embodiments, the start and stop of the first sterilization module can be set according to a preset working time. Specifically, when the working time reaches the preset working time, the first sterilization module is turned off.

[0352] In some embodiments, the working time of the first sterilization module can also be controlled by detecting the bacterial content in the refrigerating chamber 1. When the bacterial content in the refrigerating chamber 1 reaches the first preset bacterial content, the first sterilization module is turned off; when the bacterial content in the refrigerating chamber 1 is not lower than the first preset bacterial content, the first sterilization module is kept working.

[0353] Reference Figure 18 , taking refrigerator compartment 1 as an example, the control logic of the sterilization action of the refrigerator after executing the fresh air oxygen reduction mode is explained.

[0354] The vacuum pump assembly 8 evacuates the refrigerating chamber 1 (step S1801);

[0355] Determine whether the oxygen content in the refrigerating chamber 1 detected by the oxygen concentration detection device reaches a preset oxygen content (step S1802);

[0356] In step S1802, if the oxygen content in the refrigerating chamber 1 reaches the preset oxygen content, step S1803 is executed to turn off the vacuum pump assembly 8; then step S1804 is executed to turn on the high voltage power supply and the ion generator generates ion groups;

[0357] Determine whether the working time of the ion generating device reaches a first preset working time (step S1805);

[0358] In step S1805, if the working time reaches the first preset working time, step S1806 is executed to turn off the high voltage power supply and the ion generating device;

[0359] In step S1805 , if the working time does not reach the first preset working time, step S1805 is executed.

[0360] In step S1802, if the oxygen content in the refrigerating chamber 1 does not reach the preset oxygen content, step S1802 is executed.

[0361] In step S1805 , whether to shut down the first sterilization module can also be controlled by judging the bacteria content in the refrigerating chamber 1 .

[0362] In some embodiments, during the sterilization process of the cold storage chamber 1, it is necessary to detect whether the door is open. When the door is open, the first sterilization module is closed; within a certain period of time, when it is detected that the door is closed again, the first sterilization module is opened again to complete the sterilization of the cold storage chamber 1.

[0363] In some embodiments, the opening time of the door body can also be collected. When the opening time of the door body reaches the preset opening time, the first sterilization module is closed. When the opening time of the door body does not reach the preset opening time and the first sterilization module is in the open state, the first sterilization module is kept open.

[0364] Through the above arrangement, frequent starting and stopping of the first sterilization module is avoided.

[0365] In some embodiments, a sterilization module is also provided in the fresh-keeping drawer 11 of the refrigerator. The sterilization module provided in the fresh-keeping drawer 11 is defined as a second sterilization module, which is configured to remove floating bacteria in the air in the fresh-keeping drawer 11, bacteria attached to the inner wall of the fresh-keeping drawer 11, and attached bacteria on food.

[0366] It should be noted that the structures of the first sterilization module and the second sterilization module can be the same or different, as long as they can eliminate bacteria in the space.

[0367] In some embodiments, the first sterilization module can at least release ozone and utilize at least a portion of the ozone for sterilization and odor removal, so as to meet the daily sterilization needs of the refrigeration chamber 1 and the bacterial contamination problem caused by the refrigeration chamber 1 executing the fresh air oxygen reduction mode.

[0368] In some embodiments, the second sterilization module can at least release ozone and utilize at least a portion of the ozone to sterilize and remove odors, thereby meeting the daily sterilization requirements of the fresh-keeping drawer 11 and preventing bacterial contamination caused by the fresh-air oxygen reduction mode of the fresh-keeping drawer 11.

[0369] During the vacuum pump assembly 8's vacuuming process, the air in the fresh-keeping drawer 11 will be extracted, and the ion groups in the air will enter the second pipeline assembly along with the airflow to remove the attached bacteria and floating bacteria inside the second pipeline assembly.

[0370] In some embodiments, in order to solve the problem of bacteria introduced into the fresh-keeping drawer 11 due to the fresh air oxygen reduction mode, the controller 6 is configured to manually or automatically activate the second sterilization module after the fresh air oxygen reduction mode is completed. The second sterilization module generates ion clusters to sterilize the inner wall of the fresh-keeping drawer 11 and the food inside, thereby improving the preservation conditions of the food in the fresh-keeping drawer 11.

[0371] In some embodiments, the second sterilization module can start working after the vacuum pump assembly 8 is turned off or when the vacuum pump assembly 8 is about to be turned off to solve the problem of bacteria outside the box 100 or inside the refrigerator compartment 1 introduced by the fresh-air drawer 11 when executing the fresh air oxygen reduction mode.

[0372] It should be noted that during the normal storage process of the fresh-keeping drawer 11, the second sterilization module will be turned on at regular intervals to sterilize the fresh-keeping drawer 11 to remove attached bacteria and floating bacteria in the fresh-keeping drawer 11 and extend the shelf life of the food.

[0373] In some embodiments, the working time of the second sterilization module can also be set by a preset working time. Specifically, when the working time of the second sterilization module reaches the second preset working time, the second sterilization module is turned off.

[0374] In some embodiments, the working time of the second sterilization module can also be controlled by detecting the bacterial content in the fresh-keeping drawer 11. When the bacterial content in the fresh-keeping drawer 11 is lower than the second preset bacterial content, the second sterilization module is turned off; when the bacterial content in the fresh-keeping drawer 11 is not lower than the second preset bacterial content, the second sterilization module is kept working.

[0375] It should be noted that the second preset bacterial content is a preset bacterial content suitable for food preservation in the fresh-keeping drawer 11, which is preset considering all aspects of the performance of the fresh-keeping drawer 11. The first preset bacterial content is a preset bacterial content suitable for food preservation in the refrigerator compartment 1, which is preset considering all aspects of the performance of the refrigerator compartment 1.

[0376] Reference Figure 19 , taking the fresh-keeping drawer 11 as an example, the control logic of the sterilization action of the refrigerator after executing the fresh air and oxygen reduction mode is explained.

[0377] The vacuum pump assembly 8 evacuates the fresh-keeping drawer 11 (step S1901);

[0378] Determine whether the oxygen content in the fresh-keeping drawer 11 detected by the oxygen concentration detection device reaches the corresponding preset oxygen content (step S1902);

[0379] In step S1902, if the oxygen content in the fresh-keeping drawer 11 reaches the preset oxygen content, step S1903 is executed to turn off the vacuum pump assembly 8; then step S1904 is executed to turn on the high-voltage power supply and the ion generator generates ion clusters;

[0380] Determine whether the operating time of the ion generating device reaches the second preset operating time (step S1905);

[0381] In step S1905, if the working time reaches the second preset working time, step S1906 is executed to turn off the high voltage power supply and the ion generating device;

[0382] In step S1905 , if the working time does not reach the second preset working time, step S1905 is executed.

[0383] In step S1902, if the oxygen content in the fresh-keeping drawer 11 does not reach the preset oxygen content, step S1902 is executed.

[0384] In step S1905 , whether to close the second sterilization module can also be controlled by judging the bacterial content in the fresh-keeping drawer 11 .

[0385] In some embodiments, during the sterilization process of the fresh-keeping drawer 11, it is necessary to detect whether the fresh-keeping drawer 11 is open. When the fresh-keeping drawer 11 is open, the second sterilization module is turned off. When it is detected that the fresh-keeping drawer 11 is closed again, the second sterilization module is turned on again to complete the sterilization of the fresh-keeping drawer 11.

[0386] In some embodiments, the opening time of the fresh-keeping drawer 11 can also be collected. When the opening time of the fresh-keeping drawer 11 reaches the preset drawer time, the second sterilization module is closed. When the opening time of the fresh-keeping drawer 11 does not reach the preset drawer time and the second sterilization module is in the open state, the second sterilization module is kept open.

[0387] Through the above arrangement, frequent starting and stopping of the second sterilization module is avoided.

[0388] In some embodiments, after the vacuum pump assembly 8 is turned off, the high voltage power supply is turned on, and the positive and negative ion generating device 361 releases positive and negative ion groups to remove bacteria outside the box 100 or inside the cold storage chamber 1 due to gas replacement when executing the fresh air oxygen reduction mode.

[0389] By turning on only the positive and negative ion generating device 361 after executing the fresh air oxygen reduction mode, the floating bacteria in the compartment executing the fresh air oxygen reduction mode can be removed, thereby achieving precise sterilization and reducing unnecessary energy consumption.

[0390] In some embodiments, in addition to being turned on according to the shut-down action of the vacuum pump assembly 8 , when executing the fresh air oxygen reduction mode, the first sterilization module can be controlled by judging the bacterial content in the refrigeration chamber 1 to determine whether to turn on the first sterilization module.

[0391] Specifically, when the refrigerating chamber 1 is in the fresh air oxygen reduction mode, when the bacteria content in the refrigerating chamber 1 reaches a third preset bacteria content, the first sterilization module is turned on. The third preset bacteria content is set to the bacteria content when the refrigerating chamber 1 needs to be sterilized.

[0392] Similarly, in some embodiments, in addition to being turned on according to the closing action of the vacuum pump assembly 8, the second sterilization module can also control whether to turn on the second sterilization module by judging the bacterial content in the fresh-keeping drawer 11 during the execution of the fresh air oxygen reduction mode.

[0393] Specifically, when the fresh air and oxygen reduction mode is executed in the fresh drawer 11, when the bacteria content in the fresh drawer 11 reaches a fourth preset bacteria content, the second sterilization module is turned on. The third preset bacteria content is set to the bacteria content when the fresh drawer 11 needs to be sterilized.

[0394] Reference Figure 20 , taking the refrigeration room 1 as an example, the control logic of the first sterilization module when the refrigeration room 1 executes the fresh air oxygen reduction mode is explained.

[0395] The vacuum pump assembly 8 evacuates the refrigerating chamber 1 (step S2001);

[0396] Determine whether the bacterial content in the refrigerating chamber 1 reaches a third preset bacterial content (step S2002);

[0397] In step S2002, if the bacterial content in the refrigerating chamber 1 reaches a third preset bacterial content, step S2003 is executed to turn on the high-voltage power supply and the first sterilization module releases ion clusters;

[0398] In step S2002, if the bacteria content in the refrigerating chamber 1 does not reach the third preset bacteria content, step S2002 is executed.

[0399] Through the above steps, the sterilization module is turned on not only after the fresh air oxygen reduction action is completed, but also to detect the bacterial content during the execution of the fresh air oxygen reduction mode, thereby preventing the bacteria in the cold storage chamber 1 from contaminating other components during the execution of the fresh air oxygen reduction mode.

[0400] It should be noted that the fresh-keeping drawer 11 can also detect the bacterial content during the fresh air oxygen reduction operation to prevent the bacteria in the fresh-keeping drawer 11 from contaminating other components.

[0401] In some embodiments, the refrigerator includes a vacuum pump assembly 8, a pipeline assembly and an atmosphere-controlled membrane assembly with the refrigerating chamber 1 or the fresh-keeping drawer 11, which is used to realize fresh air ventilation of the refrigerating chamber 1 while reducing the oxygen content of the air in the refrigerating chamber 1, and realize fresh air ventilation of the fresh-keeping drawer 11 while reducing the oxygen content of the air in the fresh-keeping drawer 11; at the same time, the refrigerator also includes a sterilization module, which is turned on after the fresh air oxygen reduction action is performed to remove bacteria outside the box 100 or inside the refrigerating chamber 1 introduced due to airflow replacement, reduce the bacterial content in the refrigerating chamber 1 or the fresh-keeping drawer 11, and improve the storage quality of the refrigerating chamber 1 or the fresh-keeping drawer 11.

[0402] In some embodiments, in order to prevent bacteria in the refrigeration chamber 1 from entering the first pipe assembly, the vacuum pump assembly 8 or other compartments through air circulation and causing cross contamination, the sterilization function is turned on before the fresh air oxygen reduction mode is activated.

[0403] Specifically, the controller 6 is configured to turn on the high-voltage power supply before turning on the vacuum pump assembly 8, so that the first sterilization module releases the ion group to remove the attached bacteria and floating bacteria in the cold storage chamber 1, thereby avoiding contamination of the first controlled atmosphere membrane assembly 101, the first pipeline assembly and the vacuum pump assembly 8 during the gas replacement process, avoiding cross-contamination between chambers, and extending the service life of the controlled atmosphere membrane assembly and the refrigerator.

[0404] In some embodiments, after the vacuum pump assembly 8 is turned off, the first sterilization module may continue to operate for a period of time to ensure the sterilization effect in the refrigeration chamber 1 .

[0405] In some embodiments, during the sterilization process of the cold storage chamber 1, it is necessary to detect whether the door is open. When the door is open, the first sterilization module is closed; within a certain period of time, when it is detected that the door is closed again, the first sterilization module is opened again to complete the sterilization of the cold storage chamber 1.

[0406] In some embodiments, the opening time of the door body can also be collected. When the opening time of the door body reaches the preset opening time, the first sterilization module is closed. When the opening time of the door body does not reach the preset opening time and the first sterilization module is in the open state, the first sterilization module is kept open.

[0407] In some embodiments, when the cold storage chamber 1 is being sterilized and the fresh air oxygen reduction action is being performed, it is necessary to detect whether the door body is open. When the door body is open, the first sterilization module and the vacuum pump assembly 8 are turned off; within a certain period of time, when it is detected that the door body is closed again, the first sterilization module is turned on again to complete the sterilization work of the cold storage chamber 1, and the vacuum pump assembly 8 is turned on to evacuate the cold storage chamber 1.

[0408] In some embodiments, the opening time of the door body can also be collected. When the opening time of the door body reaches the preset opening time, the first sterilization module and the vacuum pump assembly 8 are closed. When the opening time of the door body does not reach the preset opening time and the first sterilization module is in the open state, the first sterilization module and the vacuum pump assembly 8 are kept open.

[0409] Through the above arrangement, frequent starting and stopping of the first sterilization module is avoided.

[0410] Reference Figure 21 Taking refrigerator room 1 as an example, the control logic of the refrigerator's sterilization work before fresh air oxygen reduction is explained.

[0411] Receive a control instruction for the vacuum pump assembly 8 to start working (step S2101);

[0412] Turning on the high voltage, the first sterilization module generates ion clusters (step S2102);

[0413] The vacuum pump assembly 8 evacuates the refrigerating chamber 1 (step S2103);

[0414] Determine whether the oxygen content in the refrigerating chamber 1 detected by the oxygen concentration detection device reaches a preset oxygen content (step S2104);

[0415] In step S2104, if the oxygen content in the refrigerating chamber 1 reaches the preset oxygen content, step S2105 is executed to turn off the vacuum pump assembly 8;

[0416] Determine whether the shutdown time of the vacuum pump assembly 8 reaches the preset shutdown time (step S2106);

[0417] In step S2106, if the shutdown time of the vacuum pump assembly 8 reaches the preset shutdown time, step S2107 is executed to turn off the high voltage power supply and the first sterilization module stops generating ion clusters;

[0418] In step S2106 , if the closing time of the vacuum pump assembly 8 does not reach the preset closing time, step S2106 is executed;

[0419] In step S2104, if the oxygen content in the refrigerating chamber 1 does not reach the preset oxygen content, step S2104 is executed.

[0420] In some embodiments, the first sterilization module can be operated for a period of time before the fresh air oxygen reduction action is performed, that is, the vacuum pump assembly 8 is turned on again to ensure the sterilization effect of the first sterilization module and reduce bacterial cross contamination.

[0421] In some embodiments, the first sterilization module is disposed near the first modified atmosphere membrane assembly 101 to improve the efficiency of sterilizing the extracted air flow.

[0422] In some embodiments, in order to prevent bacteria in the fresh-keeping drawer 11 from entering the second pipe assembly, the vacuum pump assembly 8 or other compartments through air circulation and causing cross contamination, the sterilization function is turned on before the fresh air oxygen reduction mode is activated.

[0423] Specifically, the controller 6 is configured to turn on the high-voltage power supply before turning on the vacuum pump assembly 8, so that the second sterilization module releases the ion group to remove the attached bacteria and floating bacteria in the fresh-keeping drawer 11, thereby avoiding contamination of the second controlled atmosphere membrane assembly 102, the second pipeline assembly and the vacuum pump assembly 8 during the gas replacement process, avoiding cross-contamination between the chambers, and extending the service life of the controlled atmosphere membrane assembly and the refrigerator.

[0424] In some embodiments, after the vacuum pump assembly 8 is turned off, the second sterilization module may continue to operate for a period of time to ensure the sterilization effect in the fresh-keeping drawer 11 .

[0425] In some embodiments, during the sterilization process of the fresh-keeping drawer 11, it is necessary to detect whether the fresh-keeping drawer 11 is open. When the fresh-keeping drawer 11 is open, the second sterilization module is turned off; within a certain period of time, when it is detected that the fresh-keeping drawer 11 is closed again, the second sterilization module is turned on again to complete the sterilization of the fresh-keeping drawer 11.

[0426] In some embodiments, the opening time of the fresh-keeping drawer 11 can also be collected. When the opening time of the fresh-keeping drawer 11 reaches the preset drawer time, the second sterilization module is closed. When the opening time of the fresh-keeping drawer 11 does not reach the preset drawer time and the second sterilization module is in the open state, the second sterilization module is kept open.

[0427] In some embodiments, when the fresh-keeping drawer 11 is being sterilized and the fresh air oxygen reduction action is being performed, it is necessary to detect whether the fresh-keeping drawer 11 is open. When the fresh-keeping drawer 11 is open, the second sterilization module and the vacuum pump assembly 8 are turned off; within a certain period of time, when it is detected that the fresh-keeping drawer 11 is closed again, the second sterilization module is turned on again to complete the sterilization work of the fresh-keeping drawer 11, and the vacuum pump assembly 8 is turned on to evacuate the fresh-keeping drawer 11.

[0428] In some embodiments, the opening time of the fresh-keeping drawer 11 can also be collected. When the opening time of the fresh-keeping drawer 11 reaches the preset drawer time, the second sterilization module and the vacuum pump assembly 8 are turned off. When the opening time of the fresh-keeping drawer 11 does not reach the preset drawer time and the second sterilization module is in the open state, the second sterilization module and the vacuum pump assembly 8 are kept open.

[0429] Through the above arrangement, frequent starting and stopping of the second sterilization module is avoided.

[0430] Reference Figure 22 Taking the fresh-keeping drawer 11 as an example, the control logic of the sterilization work of the refrigerator before fresh air oxygen reduction is explained.

[0431] Receive a control instruction for the vacuum pump assembly 8 to start working (step S2201);

[0432] Turning on the high voltage, the second sterilization module generates ion clusters (step S2202);

[0433] The vacuum pump assembly 8 evacuates the fresh-keeping drawer 11 (step S2203);

[0434] Determine whether the oxygen content in the fresh-keeping drawer 11 detected by the oxygen concentration detection device reaches a preset oxygen content (step S2204);

[0435] In step S2204, if the oxygen content in the fresh-keeping drawer 11 reaches the preset oxygen content, step S2205 is executed to turn off the vacuum pump assembly 8;

[0436] Determine whether the shutdown time of the vacuum pump assembly 8 reaches the preset shutdown time (step S2206);

[0437] In step S2206, if the shutdown time of the vacuum pump assembly 8 reaches the preset shutdown time, step S2207 is executed to turn off the high voltage power supply and the second sterilization module stops generating ion clusters;

[0438] In step S2206, if the closing time of the vacuum pump assembly 8 does not reach the preset closing time, step S2206 is executed;

[0439] In step S2204, if the oxygen content in the fresh-keeping drawer 11 does not reach the preset oxygen content, step S2204 is executed.

[0440] In some embodiments, the second sterilization module can be operated for a period of time before the fresh air oxygen reduction action is performed, that is, the vacuum pump assembly 8 is turned on again to ensure the sterilization effect of the second sterilization module and reduce bacterial cross contamination.

[0441] In some embodiments, the second sterilization module is disposed near the second modified atmosphere membrane assembly 102 to improve the efficiency of sterilizing the extracted air flow.

[0442] In some embodiments, the sterilization module can also be configured as an ultraviolet lamp to sterilize the air by emitting ultraviolet rays.

[0443] In some embodiments, the refrigerator further includes an odor removal module, which is configured to remove odor molecules in the air. The odor removal module can be configured as a photocatalyst, activated carbon, or the like.

[0444] In some embodiments, the odor detection device is configured to detect the concentration of odor in the space in which it is located, as a basis for the operation of the odor purification module.

[0445] In some embodiments, when the odor concentration detected by the odor detection device reaches a first set range, it is determined that the odor concentration in the cabinet 100 is high and needs to be removed. At this time, the odor removal module is activated to avoid odor transfer due to air flow when the fresh air oxygen reduction mode is executed.

[0446] In some embodiments, when the odor concentration detected by the odor detection device reaches the end-of-work condition, it is determined that the odor concentration in the box 100 is within a normal range, and the odor purification module is turned off.

[0447] In some embodiments, the odor removal module also includes a photocatalyst catalytic device 363, which is arranged on the side of the built-in fan 34 close to the outlet 33. In the present disclosure, DBD (dielectric barrier) discharge is coupled with a photocatalyst to achieve low-temperature plasma discharge and coordinated photocatalyst / metal oxide catalyst catalytic function to achieve a fast and efficient odor removal effect.

[0448] In the technical solution disclosed herein, the main function of the photocatalytic device 363 is to remove odors. A high-voltage electric field is applied to excite the photocatalyst to generate electrons and holes. The electrons migrate from the valence band to the conduction band and react with O2. The reaction formula is:

[0449]

[0450] The valence band holes react with H2O in the air, and the reaction formula is:

[0451] h+ +H2O→.OH

[0452] .O2 and .OH are both highly oxidizing. The air in the box 100 is sucked in by the built-in fan 34. The odor molecules in the air are oxidized and decomposed at the photocatalytic device 363, which plays a strong and rapid odor removal role.

[0453] Reference Figure 29 The photocatalytic device 363 includes a substrate plate 3631, a photocatalyst layer 3634 wrapped around the outer surface of the substrate plate 3631, and a first electrode plate 3632 and a second electrode plate 3633 disposed opposite each other and located on either side of the substrate plate 3631. The first electrode plate 3632 and the second electrode plate 3633 are electrically connected to a high-voltage power supply. The substrate plate 3631 is positioned on the side of the built-in fan 34 near the outlet 33. Multiple through-holes are formed in the substrate plate 3631 along the direction of airflow, increasing the airflow rate while also increasing the surface area of ​​the photocatalyst layer 3634, thereby improving odor removal efficiency. Air within the housing 100 flows out of the outlet 33 of the built-in fan 34 under the action of the built-in fan 34, then flows through the photocatalyst layer 3634 and back into the housing 100 through the outlet 33.

[0454] The photocatalytic device 363 utilizes the high voltage electric field generated by the first electrode plate 3632 and the second electrode plate 3633 to excite the photocatalyst layer 3634 to generate strong oxidizing molecules to decompose odor molecules in the housing 100 .

[0455] In some embodiments, substrate plate 3631 is configured as a porous ceramic, and a photocatalyst is coated or impregnated on the surface of the porous ceramic to achieve low-temperature plasma discharge in conjunction with photocatalyst / metal oxide catalyst catalysis. It should be noted that the photocatalyst here can be TiO2 doped with Cu or Mn oxide.

[0456] In some embodiments, reference Figure 30 The first electrode plate 3632 and the second electrode plate 3633 are configured as plate-wire mesh electrodes, which can effectively excite the photocatalyst and effectively reduce wind resistance. It should be noted that the two plate-wire electrodes can be interchanged.

[0457] In some embodiments, reference Figure 31 , the first electrode plate 3632 and the second electrode plate 3633 can also be set as plate-plate mesh opposing electrodes.

[0458] In some embodiments not shown, the first electrode plate 3632 and the second electrode plate 3633 may be configured as plate-line opposing electrodes, and plate electrodes or line electrodes may be provided above and below the substrate plate 3631 .

[0459] In some embodiments not shown, the first electrode plate 3632 and the second electrode plate 3633 may be configured as plate-plate opposing electrodes, and plate electrodes or line electrodes may be provided above and below the substrate plate 3631 .

[0460] The discharge parameters in this embodiment are: the voltages between the two electrodes are two positive and negative high voltages, each with the same frequency and amplitude and opposite phases, with a positive cosine high voltage peak range of 1.5kV to 2.8kV and a corresponding negative cosine high voltage peak range of -1.5 to -2.8kV. It should be noted that the spacing between the two electrodes corresponding to these voltages is 20mm.

[0461] In some embodiments, the cosine positive high voltage peak range is: 1.5kV to 2kV, and the corresponding cosine negative high voltage peak range is: -1.5kV to -2Kv. It should be noted that the distance between the two electrodes corresponding to the above voltage is 20mm.

[0462] In some embodiments, the cosine positive high voltage peak range is 2kV to 2.2kV, and the corresponding cosine negative high voltage peak range is: -2kV to -2.2kV. At this time, the distance between the two electrodes corresponding to the above voltage can also be set to 20mm.

[0463] In some embodiments, the cosine positive high voltage peak range is 2.2kV to 2.8kV, and the corresponding cosine negative high voltage peak range is: -2.2kV to -2.8kV. At this time, the distance between the two electrodes corresponding to the above voltage can also be set to 20mm.

[0464] Alternatively, the electrode voltage can be a negative cosine pulse high voltage (cosine negative high voltage peak range: -2.5kV to -4.5kV) or a positive cosine pulse high voltage (cosine positive high voltage peak range: 2.5kV to 4.5kV). In this case, the relative voltage of the counter electrode relative to the high voltage electrode is "0." It should be noted that the spacing between the two electrodes corresponding to the above voltages is 20mm.

[0465] Alternatively, the electrode voltage can be a negative cosine pulse high voltage (cosine negative high voltage peak range: -2.5kV to -3kV) or a positive cosine pulse high voltage (cosine positive high voltage peak range: 2.5kV to 3kV). In this case, the relative voltage of the counter electrode relative to the high voltage electrode is "0". It should be noted that the spacing between the two electrodes corresponding to the above voltages is 20mm.

[0466] Alternatively, the electrode voltage can be a negative cosine pulse high voltage (cosine negative high voltage peak range: -3kV to -4kV) or a positive cosine pulse high voltage (cosine positive high voltage peak range: 3kV to 4kV). In this case, the relative voltage of the counter electrode relative to the high voltage electrode is "0." It should be noted that the spacing between the two electrodes corresponding to the above voltages is 20mm.

[0467] Alternatively, the electrode voltage can be a negative cosine pulse high voltage (cosine negative high voltage peak range: -4kV to -4.5kV) or a positive cosine pulse high voltage (cosine positive high voltage peak range: 4kV to 4.5kV). In this case, the relative voltage of the counter electrode relative to the high voltage electrode is "0." It should be noted that the spacing between the two electrodes corresponding to the above voltages is 20mm.

[0468] In some embodiments, in some embodiments, referring to Figure 8 The distance between the first electrode plate 3632 and the substrate plate 3631 is 0.1 mm to 5 mm. Similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 0.1 mm to 5 mm.

[0469] In some implementations of some embodiments, the distance between the first electrode plate 3632 and the substrate plate 3631 is 0.1 mm to 2 mm. Similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 0.1 mm to 2 mm.

[0470] In some implementations of some embodiments, the distance between the first electrode plate 3632 and the substrate plate 3631 is 2 mm to 3.5 mm. Similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 2 mm to 3.5 mm.

[0471] In some implementations of some embodiments, the distance between the first electrode plate 3632 and the substrate plate 3631 is 3.5 mm to 5 mm. Similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 3.5 mm to 5 mm.

[0472] Based on the distance between the two electrodes, the DBD discharge voltage is relatively low, which means that the photocatalyst can be excited efficiently without generating ozone or the amount of ozone generated is low and below the user perception threshold. Therefore, the photocatalytic device 363 using DBD discharge coupled with photocatalyst can operate continuously, speed up the deodorization speed, and improve the deodorization efficiency. There is no need to set an operating control program to reduce the discharge time and frequency in order to control the ozone at a lower concentration like an ordinary deodorization module, which leads to a decrease in the deodorization speed.

[0473] In some embodiments of the present disclosure, the controller 6 is configured to, when the odor concentration detected by the first odor detection device reaches a first preset odor concentration threshold, turn on the vacuum pump assembly 8, and use the vacuum pump assembly 8 to evacuate the cold storage chamber 1 to promote gas circulation inside and outside the cold storage chamber 1; turn on the high-voltage power supply, and the photocatalytic device 363 releases strong oxidizing molecules.

[0474] Through the above steps, the odor removal module (illustratively, the photocatalytic device 363 in the present disclosure) and the fresh air oxygen reduction module work simultaneously, using the odor removal module to remove odor molecules from the air, and using the fresh air oxygen reduction module to replace the air, thereby improving the odor removal efficiency of the cold storage chamber 1. The simultaneous odor removal with the odor removal module can effectively prevent odor cross-contamination between the first modified atmosphere membrane assembly 101, the first piping assembly, the vacuum pump assembly 8, and the cold storage chamber 1.

[0475] In some embodiments of the present disclosure, the controller 6 is configured to, when the odor concentration detected by the second odor detection device reaches a second preset odor concentration threshold, turn on the vacuum pump assembly 8, and use the vacuum pump assembly 8 to evacuate the fresh-keeping drawer 11 to promote gas circulation inside and outside the fresh-keeping drawer 11; turn on the high-voltage power supply, and the photocatalytic device 363 releases strong oxidizing molecules.

[0476] Through the above steps, the odor removal module (exemplarily, the photocatalytic device 363 in the present disclosure) and the fresh air oxygen reduction module work simultaneously, using the odor removal module to remove odor molecules from the air and using the fresh air oxygen reduction module to replace the air, thereby improving the odor removal efficiency of the fresh-keeping drawer 11. The simultaneous odor removal by the odor removal module can effectively prevent odor cross-contamination between the first modified atmosphere membrane assembly 101, the first piping assembly, the vacuum pump assembly 8, and the refrigerator compartment 1.

[0477] Reference Figure 23 , taking refrigerator compartment 1 as an example to illustrate the control logic of the refrigerator's odor removal.

[0478] Determine whether the refrigerator compartment is in a closed state (step S2303);

[0479] In step S2303, if the refrigerator compartment is in the closed state, step S2301 is executed;

[0480] In step S2303, if the refrigerating chamber is not in the closed state, step S2304 is executed, and the refrigerator alarms or the vacuum pump component extracts air in a preset working state.

[0481] Determine whether the odor concentration detected by the first odor detection device reaches a first preset odor concentration threshold (step S2301);

[0482] In step S2301, if the odor concentration reaches the first preset odor concentration threshold, step S2302 is executed to turn on the vacuum pump assembly 8 and the high-voltage power supply;

[0483] In step S2301, if the odor concentration does not reach the first preset odor concentration threshold, step S2301 is executed.

[0484] It should be noted that the above-mentioned first preset odor concentration threshold is the limit for deodorization and can be adjusted according to user needs.

[0485] It should be noted that the fresh air oxygen reduction process, sterilization process, and odor removal process in this disclosure are set to be in a relatively closed space to improve the efficiency of fresh air ventilation, sterilization, and odor removal. Of course, the short-term opening of the closed space does not require switching of component operations to avoid excessive switching of components, which may affect the service life of the components.

[0486] In some embodiments, the working state of one or a combination of the vacuum pump assembly 8 and the photocatalytic device 363 can be controlled by the concentration of the odor.

[0487] In some embodiments, the odor removal module and the sterilization module can be integrated into the same housing 31 .

[0488] In some embodiments, when executing the fresh air oxygen reduction mode, if it is detected that the odor concentration in the compartment where the fresh air oxygen reduction is being performed reaches the corresponding preset odor concentration threshold, at this time, the working state of the vacuum pump component 8 is maintained or the working frequency of the vacuum pump component 8 is increased, and the high-voltage power supply is turned on to allow the purification module to generate a strong oxidizing ion group to adsorb odor molecules in the air.

[0489] In some embodiments, before the fresh air deoxygenation is performed in the compartment, a deodorization operation is performed, and the high voltage power supply is turned on to cause the purification module to produce a strong oxidizing ion group. This is to perform deodorization before the fresh air deoxygenation operation to prevent odor problems from occurring between compartments or components.

[0490] In some embodiments, the sterilization module and the odor removal module can be integrated together to form a sterilization and odor removal module, so that the sterilization and odor removal module produces ion clusters and ozone. The functions of the sterilization module and the odor removal module can also be separated to achieve a refined division of labor.

[0491] It should be noted that when the sterilization and odor purification module is used, the working logic of the sterilization and odor purification module can refer to the separate sterilization module and odor purification module.

[0492] The odor-purifying module also includes a cold catalyst catalytic device 364, which is arranged on the side of the internal air duct close to the outlet 33. Specifically, the cold catalyst catalytic device 364 is arranged on the side of the photocatalytic device 363 close to the outlet 33, and is used to further adsorb and decompose odor molecules in the air, and degrade ozone generated by the high-voltage discharge of the strong oxidizing ion generator 362.

[0493] Cold catalyst catalytic device 364 includes a cold catalyst substrate having multiple through-holes. The outer surface of the cold catalyst substrate is coated with a cold catalyst layer. The airflow within housing 31 flows through the cold catalyst layer and then flows back into housing 100 through outlet 33. Specifically, the airflow within housing 31, which has reacted with strong oxidizing ions, positive ions, and negative ions, passes through the cold catalyst layer and is further cleaned, thereby ensuring a cleaning effect. Exemplarily, the cold catalyst substrate is configured as a porous ceramic, the surface of which is coated with a cold catalyst.

[0494] In some embodiments, the refrigerator further includes an ethylene removal unit configured to remove ethylene inside the box body 100. The purpose of doing so is that ethylene is an endogenous ripening-promoting physiologically active factor released by respiratory transition fruits and vegetables when they mature after harvest. Reducing the ethylene content in the storage environment can effectively extend the shelf life of fruits and vegetables.

[0495] In some embodiments, a catalytic deodorization module is provided at the exhaust port of the vacuum pump assembly 8 to decompose odorous substances. For example, methyl mercaptan, volatile amines and other substances are decomposed into carbon dioxide, water and the like.

[0496] Among them, the catalytic deodorization module can be set as an ordinary catalyst or an electrically excited synergistic catalytic module.

[0497] Exemplarily, it can be set as a photocatalyst and an ion catalyst.

[0498] By setting a catalytic deodorization module at the exhaust port of the vacuum pump assembly 8, bacteria or odors that have not been removed inside the refrigerator can be prevented from spreading outside the cabinet 100, affecting the air quality outside the cabinet 100 and reducing the user experience.

[0499] In some embodiments, a sterilization and deodorization module is provided on one side of the modified atmosphere membrane assembly, and sterilization and deodorization operations are performed before or simultaneously with oxygen reduction using the fresh air device (vacuum pump assembly 8 and modified atmosphere membrane assembly).

[0500] In some embodiments, a refrigerator is proposed, which includes a vacuum pump assembly 8, a pipeline assembly and an atmosphere-controlled membrane assembly with a refrigerating chamber 1 or a fresh-keeping drawer 11, which is used to realize fresh air ventilation of the refrigerating chamber 1 while reducing the oxygen content of the air in the refrigerating chamber 1, and realize fresh air ventilation of the fresh-keeping drawer 11 while reducing the oxygen content of the air in the fresh-keeping drawer 11; at the same time, the refrigerator also includes a sterilization module. Before performing the fresh air oxygen reduction action, the sterilization module is first turned on to realize pre-sterilization of the refrigerating chamber 1 or the fresh-keeping drawer 11, so as to prevent bacteria in the refrigerating chamber 1 or the fresh-keeping drawer 11 from circulating with the air flow and contaminating the atmosphere-controlled membrane assembly, the pipeline assembly and the vacuum pump assembly 8.

[0501] In some embodiments, a vacuum pump assembly (including a vacuum pump, a vacuum pump vibration damping sleeve, and a pipeline) is provided inside the refrigerator compartment of the refrigerator and is installed on the back of the refrigerator compartment or the top of the refrigerator storage compartment. The vacuum pump assembly is flexibly connected to the structure on the inner liner of the refrigerator compartment (flexible connection is defined as connection through silicone rubber material), the gas-controlled membrane assembly is flexibly connected to the connecting pipe of the vacuum pump (silicone tube), the vacuum pump is designed to be circular, the maximum outer diameter range is 25<D≤45mm, the rated vacuum pressure of the vacuum pump is 60Kpa<D≤84Kpa, the rated flow rate of the vacuum pump is 3L / min<T<4.4L / min, the vacuum pump receives a signal to start the project, and the refrigerator is cooled. The air in the storage room is discharged to the outside of the cold storage room through the pipes in the foam layer of the cabinet, and is further limited to be discharged to the position above the water tray in the compressor compartment. The vacuum pump works for a period of time or reciprocates for a period of time. The oxygen concentration in the cold storage room is maintained between 19.5% and 20.7% for at least a period of time, and the maintenance time should be greater than 70%. The specific test method is: under the condition of standard atmospheric pressure ±10Kpa, the refrigerator door is closed, an oxygen concentration sensor is set inside, the fresh air oxygen reduction function is turned on, the cold storage room is unloaded, and after 72h to 96h, the refrigerator door is opened. The lowest value of the oxygen concentration sensor in the cold storage room should meet the oxygen content between 19.5% and 20.7%.

[0502] The vacuum pump and modified atmosphere membrane are connected via piping to form a single assembly, installed within the refrigerator body, for high production efficiency. The cylindrical vacuum pump, ranging in size from 25mm to 45mm, takes up minimal space in the refrigerator compartment. The insulation layer within the refrigerator compartment is typically between 45mm and 55mm thick, with a minimum thickness of 20mm. This allows half of the vacuum pump to utilize the insulation layer.

[0503] The oxygen content is set at 19.5% to 20.7%, which is the optimal value for engineering design balance. The specific reason is that the life of a vacuum pump is usually 2000h to 3000h, and the single continuous working time is usually 15 to 30 minutes. If the oxygen content is set higher than 19.5%, a vacuum pump with a longer life is required, resulting in an increase in the cost of the refrigerator. The oxygen content is set between 19.5% and 20.7%, and the temperature of the refrigerator is usually between 3-7. Since the refrigerator usually stores fruits and vegetables, it is in the low oxygen sensitive period of mainstream fruits and vegetables. This triggers the protective mechanism of fruits and vegetables. During this period, the oxygen concentration and temperature work together to stimulate the contraction of the air holes on the cell walls of fruits and vegetables, thereby reducing water loss and inhibiting aerobic respiration.

[0504] In some embodiments, a camera assembly can also be provided, which is configured to monitor the status of food. A display assembly is provided on the refrigerator door, through which the food in the refrigerator can be seen, helping the user to actively turn on the fresh air and oxygen reduction function. The fresh air and oxygen reduction function can be manually turned on or off through the operation button on the door.

[0505] Those skilled in the art will understand that the scope of the present disclosure is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present disclosure. The scope of the present disclosure is limited by the appended claims.

Claims

1. A refrigerator, comprising: A box body, the box body including a top and a bottom arranged along the length direction thereof, the box body including an outer shell and an inner liner, the inner liner being arranged inside the outer shell; An installation space is provided between the inner container and the outer shell; an insulation layer disposed in the installation space and configured to reduce heat exchange between the inside and outside of the box; A compressor compartment, which is located at the bottom of the box body; a refrigerating chamber, which is formed by the inner container and is configured to store food in a refrigerated state; a door body configured to open or close the refrigeration chamber; a first flow gap, which is configured as a gap at the connection between the door body and the box body when the door body closes the refrigeration chamber; a vacuum pump assembly disposed in the compressor compartment and configured to evacuate air from the refrigerated compartment; a pipe assembly, one end of which is connected to the vacuum pump assembly, the other end of which passes through the insulation layer and extends to the refrigeration chamber air extraction port of the refrigeration chamber, the pipe assembly being configured to provide a flow line for the gas extracted by the vacuum pump assembly; a first odor detection device, which is disposed in the refrigerated compartment and is configured to detect the concentration of odor in the refrigerated compartment; The controller is configured to start the vacuum pump assembly when the odor concentration detected by the first odor detection device reaches a first preset odor concentration threshold. The vacuum pump assembly evacuates the refrigerating chamber and discharges the evacuated gas to other compartments or the outside of the box to reduce the pressure in the refrigerating chamber; The air outside the box enters the refrigerating chamber through the first circulation gap to form at least an airflow circulation path between the refrigerating chamber, the vacuum pump assembly, and the outside of the box, so as to accelerate the airflow circulation inside and outside the refrigerating chamber.

2. The refrigerator according to claim 1, further comprising: a first humidity detection device, which is disposed in the refrigerating chamber, and is configured to detect the humidity in the refrigerating chamber; The controller is configured to: When the humidity value detected by the first humidity detection device reaches a first preset humidity value, the vacuum pump assembly is turned on to evacuate the refrigerated compartment and discharge the evacuated gas to other compartments or the outside of the box, so that a pressure difference exists between the refrigerated compartment and the outside of the refrigerated compartment; The air outside the box enters the cold storage room through the first circulation gap to form at least a first airflow circulation path between the cold storage room, the vacuum pump assembly, and the outside of the box, so as to discharge the moisture in the cold storage room out of the cold storage room through the above-mentioned airflow circulation.

3. The refrigerator according to claim 2, further comprising: A fresh-keeping drawer is provided in the refrigeration chamber or the inner container; the fresh-keeping drawer comprises a drawer body and a drawer shell; a second circulation gap, the second circulation gap being provided at a contact position between the drawer body and the drawer shell so as to allow air in the refrigerated compartment to enter the fresh-keeping drawer when a pressure difference is formed between the inside and outside of the fresh-keeping drawer; a second pipe assembly, one end of the second pipe assembly being connected to the vacuum pump assembly, the other end of the second pipe assembly extending through the insulation layer to the fresh-keeping drawer exhaust port of the fresh-keeping drawer, the second pipe assembly being configured to provide a flow line for the gas extracted by the vacuum pump assembly; a second humidity detection device, which is provided in the fresh-keeping drawer and is configured to detect the humidity value in the fresh-keeping drawer; The controller is configured to, when the humidity value detected by the second humidity detection device reaches a third preset humidity value, activate the vacuum pump assembly, so that the air in the fresh-keeping drawer enters the second pipe assembly through the fresh-keeping drawer exhaust port, thereby forming a pressure difference between the fresh-keeping drawer and the refrigerator compartment; The air in the refrigerator enters the fresh-keeping drawer through the second circulation gap to form at least a second airflow circulation path between the refrigerator, the fresh-keeping drawer, the vacuum pump assembly, and the outside of the box, so that the moisture in the fresh-keeping drawer is discharged from the fresh-keeping exhaust through the above-mentioned airflow circulation.

4. The refrigerator according to claim 2 or 3, further comprising: a first modified atmosphere membrane assembly disposed on the top of the refrigerated chamber, wherein the first modified atmosphere membrane assembly has a higher permeability to oxygen than to nitrogen; a gas collecting chamber connected to the air inlet end of the vacuum pump assembly and configured to collect the oxygen-rich gas extracted from the refrigerated chamber by the vacuum pump assembly; and the first modified atmosphere membrane assembly is located on a side of the gas collecting chamber close to the refrigerated chamber; a storage chamber disposed in the box body, the storage chamber comprising an oxygen inlet communicated with the gas outlet of the vacuum pump assembly to receive gas from the gas collection chamber; The vacuum pump assembly is configured to draw the gas in the refrigerator compartment or the fresh-keeping drawer into the gas collection chamber through the pipeline assembly, so that more oxygen in the air around the first modified atmosphere membrane assembly than nitrogen around the first modified atmosphere membrane assembly passes through the first modified atmosphere membrane assembly into the gas collection chamber, thereby reducing the oxygen concentration in the refrigerator compartment or the fresh-keeping drawer; The gas in the gas collection chamber enters the storage compartment, so that a high oxygen concentration space is formed in the storage compartment; The oxygen content of the gas extracted from the fresh-keeping drawer by the vacuum pump assembly is higher than the oxygen content of the remaining air in the fresh-keeping drawer for at least a period of time, so that the oxygen content in the fresh-keeping drawer is reduced.

5. The refrigerator according to claim 4, wherein the first pipe assembly and the second pipe assembly are intersectingly connected, and the refrigerator further comprises: a regulating valve, which is provided at the connection between the first pipeline assembly and the second pipeline assembly, and is configured to control the communication between the refrigeration compartment and the vacuum pump assembly and / or the fresh-keeping drawer and the vacuum pump assembly; The controller is configured to selectively perform an oxygen reduction action on the refrigerating chamber and / or the fresh-keeping drawer by adjusting the state of the regulating valve.

6. The refrigerator according to any one of claims 4 or 5, further comprising: A back air duct is provided at the back of the box body, and the back air duct is connected to the refrigeration chamber and the fresh-keeping drawer; a refrigeration fan, which is provided in the back duct and is configured to accelerate the airflow in the back duct; The controller is configured to turn on the refrigeration fan to accelerate the air flow in the refrigeration compartment during the operation of the vacuum pump assembly.

7. The refrigerator according to claim 4, further comprising: an image acquisition device, which is disposed in the refrigeration compartment and / or the fresh-keeping drawer, and is configured to acquire images in the refrigeration compartment and / or the fresh-keeping drawer and transmit the images to the controller; an oxygen concentration collecting device, which is provided in the refrigerating chamber and / or the fresh-keeping drawer and is configured to detect the oxygen concentration in the refrigerating chamber and / or the fresh-keeping drawer; The controller is configured to, when food is placed in the refrigerating chamber, receive an image captured by the image capture device in the refrigerating chamber, obtain the type of food and thereby obtain a first required oxygen content range for the food, start the vacuum pump assembly, and adjust the regulating valve to connect the refrigerating chamber to the vacuum pump assembly; When the oxygen concentration in the refrigerated compartment reaches an upper limit of the first required oxygen content range, turning off the vacuum pump assembly; and / or When food is placed in the fresh-keeping drawer, an image captured by an image acquisition device in the fresh-keeping drawer is received, the type of food is acquired and a second required oxygen content range of the food is obtained accordingly, the vacuum pump assembly is turned on, and the regulating valve is adjusted to connect the fresh-keeping drawer to the vacuum pump assembly; When the oxygen concentration in the fresh-keeping drawer reaches an upper limit of the second required oxygen content range, the vacuum pump assembly is turned off.

8. The refrigerator according to claim 4, wherein the air outlet of the vacuum pump assembly is further connected to the outside of the refrigerator; The controller is configured to discharge the extracted gas from the box when the oxygen content in the storage compartment reaches a lower limit of a preset oxygen concentration range and the vacuum pump assembly has not yet stopped pumping gas.

9. The refrigerator according to claim 3 or 8, wherein the vacuum pump assembly comprises a plurality of vacuum pumps, and the vacuum pumps are simultaneously connected to the first connecting pipe; The controller is configured to, when receiving the second signal from the refrigerating chamber, simultaneously start at least two of the vacuum pumps to speed up the extraction of air from the refrigerating chamber.

10. A refrigerator comprising: A box body, the box body including a top and a bottom arranged along the length direction thereof, the box body including an outer shell and an inner liner, the inner liner being arranged inside the outer shell; An installation space is provided between the inner container and the outer shell; an insulation layer, which is provided in the installation space and is configured to thermally insulate the storage space inside the box from the outside; A compressor compartment, which is located at the bottom of the box body; a refrigerating chamber, which is formed by the inner container and is configured to store food in a refrigerated state; a door body configured to open or close the refrigeration chamber; a first flow gap, which is configured as a gap at the connection between the door body and the box body when the door body closes the refrigeration chamber; a vacuum pump assembly disposed in the compressor compartment and configured to evacuate air from the refrigerated compartment; a first pipe assembly, one end of the first pipe assembly being connected to the vacuum pump assembly, the other end of the first pipe assembly passing through the insulation layer and extending to the refrigeration chamber air extraction port of the refrigeration chamber, the first pipe assembly being configured to provide a flow channel for the gas extracted by the vacuum pump assembly; When the vacuum pump assembly is in operation, the air in the refrigeration chamber is extracted through the refrigeration chamber exhaust port; a first humidity detection device, which is disposed in the refrigerating chamber, and is configured to detect the humidity in the refrigerating chamber; The controller is configured as: When the humidity value detected by the first humidity detection device reaches a first preset humidity value, the vacuum pump assembly is turned on to evacuate the refrigerated compartment and discharge the evacuated gas to other compartments or the outside of the box, so that a pressure difference exists between the refrigerated compartment and the outside of the refrigerated compartment; The air outside the box enters the cold storage room through the first circulation gap to form at least a first airflow circulation path between the cold storage room, the vacuum pump assembly, and the outside of the box, so as to discharge the moisture in the cold storage room out of the cold storage room through the above-mentioned airflow circulation.

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